JP7003704B2 - Communication system and mobile station - Google Patents

Description

It relates to a communication system and a mobile station included in the communication system.

In a wireless communication system including a mobile station and a base station, various systems are known in which the base station allocates wireless communication resources to the mobile station and performs wireless communication. In the technique disclosed in Patent Document 1, when an information terminal as a mobile station requires a communication band, a band priority allocation request is made on the premise of payment of consideration. The network communication device, which is a base station, performs priority allocation of the requested communication band.

Japanese Unexamined Patent Publication No. 2014-143589

In the technique disclosed in Patent Document 1, it is necessary to pay more consideration in order to preferentially acquire the communication band. Therefore, there is a possibility that the communication band will be occupied by some users who have abundant funds, and the communication lines of other users will be tight and the convenience will be reduced.

It is not desirable to require additional consideration to utilize wireless communication resources, which are public resources. It is hoped that wireless communication resources, which are public resources, will be effectively used by many people.

The present disclosure has been made on the basis of this circumstance, and an object thereof is to provide a communication system and a mobile station capable of increasing the public value of wireless communication resources.

The above object is achieved by a combination of the features described in the independent claims, and the sub-claims specify further advantageous specific examples. The reference numerals in parentheses described in the claims indicate, as one embodiment, the correspondence with the specific means described in the embodiments described later, and do not limit the disclosed technical scope.

One disclosure relating to a communication system for achieving the above objectives is:
A mobile station ( 110 ) equipped with a mobile station-side communication unit (114) that moves with a mobile body and performs wireless communication.
A base station (120, 420, 620, 720) having a base station side communication unit (121) that communicates with the mobile station side communication unit, and
It is a communication system equipped with
The mobile station is a data value that is a value for the transmission waiting data that is the data to be transmitted based on the type of data to be transmitted and a predetermined standard, and is a data value for the transmission waiting data that is transmitted from the mobile station. Equipped with a value determination unit (112, 425, 625, 712) to determine
The base station
The allocation determination unit (123) that determines the allocation amount of the wireless communication resource for transmitting the data waiting to be transmitted to a plurality of mobile stations based on the allottable wireless communication resource and the data value determined by the value determination unit. 423, 723),
A base station-side communication control unit (124) that performs communication with a mobile station based on the allocation amount of wireless communication resources determined by the allocation determination unit is provided .
The base station side communication control unit causes the base station side communication unit to transmit information regarding the allocation amount of the wireless communication resource determined by the allocation determination unit to the mobile station.
The mobile station creates resource allocation request information including the data value determined by the value determination unit and the data size of the data waiting to be transmitted, and causes the mobile station side communication unit to transmit the created resource allocation request information to the base station. Equipped with an information creation unit (113)
The allocation determination unit acquires transmission-waiting data value distribution information representing the distribution of the data size for each data value from the resource allocation request information received by the base station-side communication unit, and allocates the acquired transmission-waiting data value distribution information. It is a communication system that determines the allocation amount of wireless communication resources to a plurality of mobile stations in a cycle shorter than the cycle in which the mobile station transmits resource allocation request information based on the possible wireless communication resources.
Another disclosure relating to a communication system to achieve the above objectives is:
A mobile station (610) equipped with a mobile station-side communication unit (114) that moves with a mobile body and performs wireless communication.
A base station (620) having a base station side communication unit (121) that communicates with the mobile station side communication unit, and
It is a communication system equipped with
A base station is a data value that is a value for transmission-waiting data that is transmission data based on a type of data to be transmitted and a predetermined standard, and is a data value for transmission-waiting data that is transmitted from a mobile station. Equipped with a value determination unit (625) that determines
The base station
The allocation determination unit (123) that determines the allocation amount of the wireless communication resource for transmitting the data waiting to be transmitted to a plurality of mobile stations based on the allottable wireless communication resource and the data value determined by the value determination unit. 423) and
A base station-side communication control unit (124) that performs communication with a mobile station based on the allocation amount of wireless communication resources determined by the allocation determination unit is provided.
The base station side communication control unit causes the base station side communication unit to transmit information regarding the allocation amount of the wireless communication resource determined by the allocation determination unit to the mobile station.
Mobile station
The value determination information creation unit (615) that creates data value determination information, which is information for determining the data value and includes the types of data waiting to be transmitted, and
With the resource allocation request information creation unit (613) that creates resource allocation request information including the data value determination information and the data size of the data waiting to be transmitted, and transmits the created resource allocation request information from the mobile station side communication unit to the base station. Equipped with
The value determination unit determines the data value based on the data value determination information included in the resource allocation request information received by the communication unit on the base station side.
The allocation determination unit has a cycle shorter than the cycle in which the mobile station transmits the resource allocation request information based on the transmission waiting data value distribution information representing the distribution of the data size for each data value and the assignable wireless communication resource. It is a communication system that determines the allocation amount of wireless communication resources.
Another disclosure relating to a communication system to achieve the above objectives is:
A mobile station (110, 610, 710) equipped with a mobile station-side communication unit (114) that moves with a mobile body and performs wireless communication.
A base station (120, 420, 620, 720) having a base station side communication unit (121) that communicates with the mobile station side communication unit, and
It is a communication system equipped with
Either the mobile station or the base station is the data value that is the value for the data waiting to be transmitted, which is the data to be transmitted, based on the type of data to be transmitted and the predetermined standard, and is transmitted from the mobile station. A value determination unit (112, 425, 625, 712) for determining the data value for the data waiting to be transmitted is provided.
The base station
The allocation determination unit (123) that determines the allocation amount of the wireless communication resource for transmitting the data waiting to be transmitted to a plurality of mobile stations based on the allottable wireless communication resource and the data value determined by the value determination unit. 423, 723),
A base station-side communication control unit (124) that performs communication with a mobile station based on the allocation amount of wireless communication resources determined by the allocation determination unit is provided.
The base station side communication control unit causes the base station side communication unit to transmit information regarding the allocation amount of the wireless communication resource determined by the allocation determination unit to the mobile station.
The communication system includes a base station management unit (130) that manages a plurality of base stations.
The mobile station sends the transmission deadline of the data waiting to be transmitted,
The base station management unit acquires the transmission deadline of the transmission waiting data transmitted by the mobile station, and within the communication area of the base station that the mobile station can reach within the transmission deadline, the mobile station waits for transmission data in the communication area. The communication area where the usage rate of the wireless communication resource is the lowest is determined as the communication area for transmitting the data waiting to be transmitted, assuming that the data is transmitted.
When the base station management unit determines the communication area of the base station as the communication area for transmitting the data waiting to be transmitted, the allocation determination unit waits for the mobile station to transmit data in the communication area in the future. A communication system that allocates wireless communication resources for data.
Another disclosure relating to a communication system to achieve the above objectives is:
A mobile station (110, 610, 710) equipped with a mobile station-side communication unit (114) that moves with a mobile body and performs wireless communication.
A base station (120, 420, 620, 720) having a base station side communication unit (121) that communicates with the mobile station side communication unit, and
It is a communication system equipped with
The mobile station is a data value that is a value for the transmission waiting data that is the data to be transmitted based on the type of data to be transmitted and a predetermined standard, and is a data value for the transmission waiting data that is transmitted from the mobile station. Equipped with a value determination unit (712) to determine
The base station
The allocation determination unit (723) that determines the allocation amount of the wireless communication resource for transmitting the data waiting to be transmitted to a plurality of mobile stations based on the allottable wireless communication resource and the data value determined by the value determination unit. )When,
A base station-side communication control unit (124) that performs communication with a mobile station based on the allocation amount of wireless communication resources determined by the allocation determination unit is provided.
The value determination unit determines the throughput value, which is the value obtained by dividing the data value by the required throughput determined from the transmission deadline and the data size of the data waiting to be transmitted, as the data value.
Mobile stations are also
It is equipped with a resource allocation request information creation unit (713) that creates resource allocation request information including throughput value and transmission deadline for each data waiting to be transmitted, and transmits the created resource allocation request information from the mobile station side communication unit to the base station.
The allocation determination unit acquires the throughput value from the resource allocation request information received by the base station side communication unit, and based on the acquired throughput value and the allottable wireless communication resource, the wireless communication resource for a plurality of mobile stations. It is a communication system that determines the allocation amount of .

In this communication system, the data value for the data waiting to be transmitted is determined based on the type of data and a predetermined standard. Therefore, the data value is an objective value set by a unified standard for a plurality of vehicles to which the communication system is applied, unlike the value that can be intentionally changed by a specific user. Since the allocation amount of the wireless communication resource for transmitting the data waiting to be transmitted is determined based on this data value, the public value of the wireless communication resource can be increased.

One disclosure relating to mobile stations to achieve the above objectives is:
A mobile station equipped with a mobile station-side communication unit (114) that moves with a mobile body and performs wireless communication.
A value determination unit that determines the data value, which is the value of the data waiting to be transmitted from the mobile station, based on the type of data and predetermined criteria.
It is equipped with a resource allocation request information creation unit (113) that creates resource allocation request information including the data value determined by the value determination unit and transmits the created resource allocation request information from the mobile station side communication unit to the base station .
The value determination unit determines the throughput value, which is the value obtained by dividing the data value by the required throughput determined from the transmission deadline and the data size of the data waiting to be transmitted, as the data value.
Mobile stations are also
It is equipped with a resource allocation request information creation unit (713) that creates resource allocation request information including throughput value and transmission deadline for each data waiting to be transmitted, and transmits the created resource allocation request information from the mobile station side communication unit to the base station. It is a mobile station.

It is a block diagram which shows the structure of the communication system 100 of 1st Embodiment. It is a block diagram which shows the structure of the vehicle-mounted terminal 110 of FIG. It is a block diagram which shows the structure of the base station 120 of FIG. It is a flowchart which shows the process until the in-vehicle terminal 110 transmits the resource allocation request information. It is a flowchart which shows a part of the resource allocation processing which the base station 120 executes. It is a flowchart which shows the process which the base station 120 executes in each resource allocation update cycle. It is a figure explaining the update procedure of the data value distribution information. It is a figure explaining the allocation result of a wireless communication resource. It is a flowchart which shows the process which the base station 120 performs in place of FIG. 6 in the 2nd Embodiment. It is a flowchart which shows the process which the base station 120 performs in place of FIG. 6 in a 3rd Embodiment. It is a figure explaining the allocation update time used in S33 of FIG. It is a figure which explains the process of S33 of FIG. 10 concretely. It is a figure explaining the feature of 4th Embodiment. It is a block diagram of the base station 420 of 4th Embodiment. It is a flowchart which shows the process to execute in place of FIG. 10 in 4th Embodiment. It is a figure which explains the process of S33-2 of FIG. 15 concretely. It is a figure explaining the feature of 5th Embodiment. 5 is a flowchart showing a process executed by the base station management unit 130 in the fifth embodiment. It is a block diagram which shows the structure of the vehicle-mounted terminal 610 of the sixth embodiment. It is a block diagram which shows the structure of the base station 620 of the 6th Embodiment. It is a block diagram which shows the structure of the vehicle-mounted terminal 710 of 7th Embodiment. It is a block diagram which shows the structure of the base station 720 of 7th Embodiment. It is a flowchart explaining the process of the allocation determination part 723 shown in FIG. 22. It is a figure explaining the throughput value distribution determined in S71 of FIG. 23. It is a figure explaining the resource allocation process executed in S77 of FIG. 23. It is a figure explaining the transmission delay data size calculated in S74 of FIG. 23. It is a figure explaining the state which the in-vehicle terminal 110 downloads data from a base station 120.

<First Embodiment>
[Outline of the first embodiment]
Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of the communication system 100 of the first embodiment. The communication system 100 includes an in-vehicle terminal 110 mounted on each of the plurality of vehicles 1, a base station 120, and a base station management unit 130. FIG. 1 shows four vehicles 1A, 1B, 1C, and 1D as vehicles on which the in-vehicle terminal 110 is mounted. When these vehicles 1A, 1B, 1C and 1D are not distinguished, they are described as vehicle 1. Since it is mounted on the vehicle 1 which is a mobile body, the in-vehicle terminal 110 is a mobile station.

The in-vehicle terminal 110 sequentially transmits various data by wide area communication. Wide area communication is, for example, LTE (Long Term Evolution). When data is transmitted by wide area communication, the data is transmitted by the wireless communication resource allocated by the base station 120. Specifically, wireless communication resources are frequency resources and time resources.

In order to request the base station 120 to allocate wireless communication resources, the in-vehicle terminal 110 transmits resource allocation request information including meta information about data waiting to be transmitted (hereinafter referred to as transmission waiting data) to the base station 120. do. The transmission waiting data may include data generated by the in-vehicle terminal 110 and scheduled to be transmitted to the base station 120 in the future. In this embodiment, the meta information includes the size of the data and the data value for each type of data. If the data type can be subdivided according to the situation even if the physical property values are the same, each subdivided classification is one data type. For example, in the case of image data, image data at the time of an accident and image data at a normal time may be distinguished as different types of data.

The base station 120 determines the allocation amount of the wireless communication resource based on the resource allocation request information transmitted from the vehicle-mounted terminal 110. When the base station 120 receives resource allocation request information from a plurality of vehicle-mounted terminals 110, the base station 120 preferentially allocates wireless communication resources to the vehicle-mounted terminals 110 holding transmission waiting data having high data value. When the wireless communication resource is allocated, the information regarding the allocated amount of the wireless communication resource representing the allocated wireless communication resource amount is transmitted to the vehicle-mounted terminal 110 to which the wireless communication resource is allocated.

The base station 120 is a base station that performs wide area communication, transmits data addressed to the base station management unit 130 transmitted by wide area communication from the in-vehicle terminal 110 to the base station management unit 130, and is provided by the base station management unit 130. The data addressed to the vehicle-mounted terminal 110 is transmitted to the vehicle-mounted terminal 110. A plurality of base stations 120 are arranged. Each base station 120 has a communication area different from each other, and performs wireless communication with an in-vehicle terminal 110 existing in its own communication area.

The base station management unit 130 is connected to a plurality of base stations 120, and transmits / receives signals to / from the plurality of base stations 120. The base station management unit 130 transmits a signal acquired from a certain base station 120 to another base station 120. As a result, the plurality of vehicle-mounted terminals 110 can perform wide-area communication via the plurality of base stations 120 and the base station management unit 130. Further, the base station management unit 130 is connected to the Internet and transmits / receives signals to / from an external server via the Internet.

[Configuration of in-vehicle terminal 110]
FIG. 2 shows the configuration of the in-vehicle terminal 110. The in-vehicle terminal 110 includes a data standby unit 111, a value determination unit 112, a resource allocation request information creation unit 113, and a mobile station side communication unit 114.

In the data standby unit 111, various data that are generated by various devices mounted on the vehicle 1 together with the in-vehicle terminal 110 and need to be transmitted to the outside of the vehicle 1 are input. The input data becomes transmission waiting data. Further, a part of the data waiting to be transmitted may be generated by the in-vehicle terminal 110. The transmission waiting data is, for example, data showing the behavior of the vehicle 1 and image data around the vehicle 1. The data showing the behavior of the vehicle 1 includes the speed, acceleration, traveling direction, and the like of the vehicle 1. The transmission waiting data is stored in the queue provided in the data waiting unit 111.

The value determination unit 112 determines the value of the data waiting to be transmitted. In this embodiment, a table in which the data value is determined for each type of data waiting to be transmitted is stored. This table serves as a reference for determining the data value of the data waiting to be transmitted. With reference to this table, the data value for the transmission waiting data stored in the queue of the data waiting unit 111 is determined. In this embodiment, the data value is shown by the price per bit. Therefore, the unit of data value is yen / bit. This unit is an example, and when the service is carried out using this communication system, the unit of data value may be a unit defined in the service. For example, using points defined within a service, the unit of data value is points / bits.

The resource allocation request information creation unit 113 creates the resource allocation request information described above. The resource allocation request information is created at a fixed cycle, for example. Further, in addition to or instead of that, data may be input to the data standby unit 111. Further, in addition to or instead of that, a certain amount of data may be stored in the queue of the data standby unit 111. The resource allocation request information includes a message indicating that the wireless communication resource is requested to be allocated, an ID of the vehicle-mounted terminal 110, and the above-mentioned meta information. The ID of the in-vehicle terminal 110 is an ID that identifies the in-vehicle terminal 110 as a communication partner during wide area communication. The process of the resource allocation request information creating unit 113 will be described more specifically later with reference to FIG.

The processing executed by the value determination unit 112 and the resource allocation request information creation unit 113 is executed by a computer including a CPU, ROM, RAM, I / O, and a bus line connecting these configurations. The ROM contains a program for making a general-purpose computer function as a value determination unit 112 and a resource allocation request information creation unit 113. When the CPU executes the program stored in the ROM while using the temporary storage function of the RAM, the computer functions as the value determination unit 112 and the resource allocation request information creation unit 113. When these functions are executed, the method corresponding to the program is executed.

The storage medium for storing the program executed by the CPU is not limited to the ROM, and may be stored in a non-transitory tangible storage medium. For example, the above program may be stored in the flash memory. Further, a part or all of the functions provided in the computer may be realized by using one or a plurality of ICs (in other words, as hardware).

The mobile station side communication unit 114 is a communication unit that performs wide area wireless communication. By wide area communication, it communicates with the base station management unit 130 and the mobile station side communication unit 114 included in the other in-vehicle terminal 110 via the base station 120. In addition, narrow-range wireless communication may be possible. Narrow-range wireless communication is, for example, DSRC, wireless LAN, or the like. Further, vehicle-to-vehicle communication may be possible. Vehicle-to-vehicle communication is, for example, communication defined by the 700 MHz band intelligent transportation system standard.

[Configuration of base station 120]
FIG. 3 shows the configuration of the base station 120. The base station 120 includes a base station side communication unit 121, a vehicle management unit 122, and a base station side communication control unit 124. The base station side communication unit 121 receives data transmitted from the in-vehicle terminal 110 by wide area communication via the base station 120. The received data is provided to the vehicle management unit 122. The data transmitted from the vehicle-mounted terminal 110 by wide area communication includes resource allocation request information.

The vehicle management unit 122 manages the in-vehicle terminal 110 existing within the communication range of the base station 120. In addition, the data distribution of the transmission waiting data that is waiting for transmission in each in-vehicle terminal 110 is managed. Further, wireless communication resources are sequentially allocated to the in-vehicle terminal 110 mounted on each vehicle 1. The vehicle management unit 122 includes an allocation determination unit 123, and the allocation determination unit 123 executes a process of determining the allocation amount of the wireless communication resource for the in-vehicle terminal 110.

When the resource allocation request information is acquired from the base station side communication unit 121, the allocation determination unit 123 determines the allocation amount of the wireless communication resource for the vehicle-mounted terminal 110 that has transmitted the resource allocation request information. Then, the determined wireless communication resource allocation amount is output to the base station side communication control unit 124.

When the allocation amount of the wireless communication resource is input from the allocation determination unit 123, the base station side communication control unit 124 allocates the information regarding the allocation amount of the wireless communication resource from the base station side communication unit 121. It is transmitted to the in-vehicle terminal 110.

[Resource allocation request transmission process]
FIG. 4 shows the process until the vehicle-mounted terminal 110 transmits the resource allocation request information. Steps (hereinafter, steps are omitted) S1 is executed by the value determination unit 112, and S2 to S4 are executed by the resource allocation request information creation unit 113. The process shown in FIG. 4 is executed at each preset request creation timing. Further, in addition to or instead of that, data may be input to the data standby unit 111. Further, S1 and S2 may be executed only for the data newly input to the data standby unit 111.

In S1, the data value is determined by referring to the table for each type of data waiting to be transmitted. In S2, the data size of the data waiting to be transmitted is calculated. In S3, the data value distribution information of the data waiting to be transmitted is created. The data value distribution information is an arrangement of data waiting to be transmitted in order of data value. The histogram shown in FIG. 7 is this data value distribution information. In S4, resource allocation request information is created, and the resource allocation request information is transmitted to the base station 120.

The resource allocation request information includes a message indicating that the wireless communication resource is requested to be allocated, an ID of the vehicle-mounted terminal 110, and meta information. This meta information includes the data value distribution information created in S3. The data value distribution information indicates the data value and the data size.

[Resource allocation process]
5 and 6 show the processes executed by the vehicle management unit 122 and the allocation determination unit 123 of the base station 120. FIG. 5 is executed by the vehicle management unit 122. The vehicle management unit 122 periodically monitors the signal from the base station side communication unit 121. The process shown in FIG. 5 is the process after the resource allocation request information is acquired from the communication unit 121 on the base station side.

In S11, the vehicle management unit 122 acquires the resource allocation request information. In S12, it is determined whether or not the data value distribution information acquired from the same vehicle 1 as the data value distribution information included in the resource allocation request information acquired in S11 exists in the vehicle management unit 122. If this judgment is YES, the process proceeds to S13, and if NO, the process proceeds to S14.

In S13, the vehicle 1 specified by the ID included in the acquired resource allocation request information is targeted for update, and the transmission waiting data value distribution information stored in the vehicle management unit 122 for the vehicle 1 is acquired this time. Update to the data value distribution information waiting to be sent.

On the other hand, in S14, data value distribution information is newly created for the vehicle 1 specified by the ID included in the acquired resource allocation request information. The newly created data value distribution information is the data value distribution information acquired this time.

Next, FIG. 6 will be described. FIG. 6 is a process to be executed every preset resource allocation update cycle. This resource allocation update cycle is shorter than the request transmission cycle, which is the cycle in which the vehicle-mounted terminal 110 transmits the resource allocation request information. The minimum value of this resource allocation update cycle is the same as the minimum unit of time resources. A plurality of resource allocation update cycles are included in one request transmission cycle. That is, the process shown in FIG. 6 is executed a plurality of times in one request transmission cycle. Of the processes shown in FIG. 6, S21 is executed by the vehicle management unit 122, S22 and S23 are executed by the allocation determination unit 123, and S24 is executed by the base station side communication control unit 124.

In S21, the data value distribution information of the transmission waiting data of each vehicle 1 is determined. The data value distribution information is received from the in-vehicle terminal 110 as it is, in other words, the data value distribution information stored in the vehicle management unit 122 at the time of the first execution of S21 after executing S13 or S14. The data value distribution information is used as it is as the data value distribution information of the data waiting to be transmitted.

On the other hand, at the time of the second and subsequent executions of S21 after executing S13 or S14, the data value distribution information is updated based on the received data. At the time of the second and subsequent executions of S21, the in-vehicle terminal 110 should be transmitting a part of the data waiting to be transmitted by the allocated wireless communication resource. Since the transmitted data transmitted by the in-vehicle terminal 110 is received by the base station 120, it can be seen that the base station 120 was able to transmit the transmission waiting data by the data size of the received data. Therefore, at the time of the second and subsequent executions of S21 after executing S13 or S14, the data value distribution information is updated based on the received data.

The procedure for updating the data value distribution information will be specifically described with reference to FIG. 7. In FIG. 7, the time t1 is the time when the base station 120 receives the data value distribution information from each vehicle 1. The time t2 and the time t3 are the times when S21 is executed for the second time and thereafter after the execution of S13 or S14. At time t2 and time t3, the updated data value distribution information is shown.

In the present embodiment, the in-vehicle terminal 110 transmits the transmission waiting data in descending order of data value. Therefore, the base station 120 has already received the data size of the data received from the in-vehicle terminal 110 in order from the side with the highest data value in the data value distribution information without determining the type of the data received from the in-vehicle terminal 110. If the data is used, the data value distribution information of the data waiting to be transmitted in the in-vehicle terminal 110 can be updated.

In S22, the wireless communication resource that can be allocated is grasped. The wireless communication resource is a wireless communication resource that can be used by the base station 120 whose communication area is the position where the vehicle-mounted terminal 110 exists. Specifically, the wireless communication resource is divided into a frequency resource and a time resource, and the frequency resources that can be used differ depending on the base station 120. If the frequency resources that can be used for each base station 120 do not change dynamically and are fixed, S22 may be skipped.

In S23, the wireless communication resource grasped in S22 is allocated to each in-vehicle terminal 110 based on the data value distribution information updated in S21. In the present embodiment, a preset minimum amount of wireless communication resources is allocated to all in-vehicle terminals 110. The remaining wireless communication resources available to the base station 120 are allocated in descending order of data value. At time t1 in FIG. 7, the lower limit of the data value to which the wireless communication resource can be allocated at time t1 is also shown.

In the case of the data value distribution information shown at time t1 in FIG. 7, the transmission waiting data held by the vehicle-mounted terminal 110 mounted on the vehicle 1C and the transmission waiting data held by the vehicle-mounted terminal 110 mounted on the vehicle 1D are the lower limit. There is no data with a higher data value than the value. On the other hand, the transmission waiting data held by the vehicle-mounted terminal 110 mounted on the vehicle 1A and the transmission waiting data held by the vehicle-mounted terminal 110 mounted on the vehicle 1B have data values higher than this lower limit. Therefore, at time t1, the allocation of wireless communication resources based on the data value is limited to vehicle 1A and vehicle 1B. That is, in the present embodiment, the wireless communication resource is preferentially allocated to the transmission waiting data having a high data value. As a result, more high-value data is distributed in the data distributed throughout the communication system having a finite frequency resource, so that it is possible to carry out higher-value data transmission using the finite frequency resource. The value as a wireless communication system can also be improved.

However, in the present embodiment, the minimum amount of wireless communication resources is allocated to all the vehicle-mounted terminals 110 that have received the resource allocation request information, regardless of the data value of the data waiting to be transmitted. As a result, it is possible to suppress a decrease in convenience of the in-vehicle terminal 110 that holds only transmission waiting data having a low data value. However, in order to maximize the total value of the data distributed in the entire communication system, it is not necessary to allocate the minimum amount of wireless communication resources to all the in-vehicle terminals 110. In other words, the wireless communication resource possessed by the base station 120 may be sequentially allocated to the vehicle 1 possessing data having high data value.

In S24, information regarding the allocation amount of the wireless communication resource thus determined is transmitted to each in-vehicle terminal 110. When each in-vehicle terminal 110 receives information regarding the allocation amount of the wireless communication resource from the base station 120, the in-vehicle terminal 110 sequentially transmits the transmission waiting data in descending order of data value according to the allocation amount. However, it is not essential to transmit the information regarding the allocated amount of the wireless communication resource to each in-vehicle terminal 110, and each in-vehicle terminal 110 may sequentially transmit the acquired wireless communication resource in descending order of data value.

From time t1 to time t2 in FIG. 7, the base station 120 receives data from each in-vehicle terminal 110. Therefore, unless new data is generated in each in-vehicle terminal 110 from time t1 to time t2, at time t2, the lower limit of the data value to which the resource is allocated is lower than that of time t1. Even at time t2, wireless communication resources are allocated to the in-vehicle terminal 110 having transmission waiting data higher than this lower limit. Therefore, at time t2, wireless communication resources are allocated to the vehicle 1A, the vehicle 1B, and the vehicle 1C. Further, for the vehicle 1D, the minimum amount of wireless communication resources is allocated.

FIG. 8 illustrates the result of allocating the wireless communication resources that can be allocated by the base station 120 to the vehicles 1A, 1B, 1C, and 1D. FIG. 8 is an example of allocation of wireless communication resources determined based on the data value distribution information shown in FIG. 7. In FIG. 8, for convenience of explanation, the same frequency resource is allocated to the same vehicle 1 in the time axis direction, but the frequency resource area allocated in the time axis direction may be changed among the plurality of vehicles 1. .. Further, the time resource area allocated in the time axis direction within the resource allocation update cycle time may be changed among the plurality of vehicles 1.

In FIG. 8, prior to t1, it does not correspond to FIG. 7, and is arbitrarily assigned. At time t1, as shown in FIG. 7, many wireless communication resources are allocated to the vehicle 1A. Time t2 is the time when the resource allocation update cycle has elapsed from time t1. From time t1 to time t2, the resource allocation determined at time t1 is continued. At t2, the allocation of wireless communication resources is updated based on the data value distribution information of the data waiting to be transmitted at that time. In the resource allocation updated in t2, the most wireless communication resources are allocated to the vehicle 1B. The resource allocation determined at t2 continues until time t3. In this way, the base station 120 updates the resource allocation amount at each resource allocation update cycle while updating the transmission waiting data value distribution information of each in-vehicle terminal 110 based on the received data.

Then, when the request transmission cycle has elapsed since the vehicle-mounted terminal 110 transmitted the resource allocation request information last time, the vehicle-mounted terminal 110 newly transmits the resource allocation request information. When this resource allocation request information is received, the base station 120 determines the resource allocation amount based on the transmission waiting data value distribution information included in the received resource allocation request information.

[Summary of the first embodiment]
The vehicle-mounted terminal 110 of the first embodiment stores a table that determines the data value for each type of transmission waiting data, and is based on this table and the type of transmission waiting data held by the data standby unit 111. , The data value for the data waiting to be transmitted is determined (S1). Therefore, the data value is different from the value that can be intentionally changed by a specific user, and is a unified value in the in-vehicle terminal 110 to which this system is applied. Based on this data value, the allocation amount of the wireless communication resource for transmitting the transmission waiting data is determined (S23). Since the allocation amount of the wireless communication resource is determined in this way, the public value of the wireless communication resource can be increased.

Further, in the first embodiment, the in-vehicle terminal 110 creates the transmission waiting data value distribution information, and the base station 120 determines the allocation amount of the wireless communication resource based on the transmission waiting data value distribution information. ing. In this way, by determining the allocation amount of the wireless communication resource based on the transmission waiting data value distribution information, as described with reference to FIGS. 7 and 8, the in-vehicle terminal 110 requests to transmit the resource allocation request information. The allocation of wireless communication resources can be updated in a time shorter than the transmission cycle. Therefore, the value obtained by using the wireless communication resource can be further increased.

Further, when updating the allocation of the wireless communication resource, the base station 120 updates the transmission waiting data value distribution information of the in-vehicle terminal 110 by using the received data size. As a result, the resource allocation amount to be updated in FIG. 6 can be set to the resource allocation amount that can further increase the value of the wireless communication resource.

<Second Embodiment>
Next, the second embodiment will be described. In the following description of the second embodiment, the element having the same number as the code used so far is the same as the element having the same code in the previous embodiments, unless otherwise specified. Further, when only a part of the configuration is described, the embodiment described above can be applied to the other parts of the configuration.

In the second embodiment, FIG. 9 is executed instead of FIG. The difference between FIGS. 9 and 6 is that S23-1 and S23-2 are executed instead of S23. That is, in the second embodiment, the method of determining the resource allocation amount based on the data value distribution information is different from that of the first embodiment. Since S23-1 and S23-2 are processes to be executed in place of S23, the allocation determination unit 123 executes them.

In S23-1, the data value ratio of each in-vehicle terminal 110 is calculated from the transmission waiting data value distribution information of each in-vehicle terminal 110. The data value ratio is the sum of the values obtained by multiplying the data size of each transmission waiting data by the data value of each transmission waiting data for one in-vehicle terminal 110 as a numerator. The denominator is the sum of the numerator values calculated for all in-vehicle terminals 110 to which wireless communication resources need to be allocated. That is, the denominator is the sum of the values obtained by multiplying the data size of the transmission waiting data of all the in-vehicle terminals 110 to which the wireless communication resource needs to be allocated by the data value of each transmission waiting data.

In S23-2, the wireless communication resources that can be used by the base station 120 are allocated by the data value ratio calculated in S23-1. In addition, in the case of this second embodiment, it is not necessary to consider the minimum amount of wireless communication resources.

Even when the allocation amount of the wireless communication resource is determined as in the second embodiment, the allocation amount of the wireless communication resource is determined based on the data value, so that the public value of the wireless communication resource can be increased. can.

<Third Embodiment>
In the third embodiment, the allocation determination unit 123 of the base station 120 allocates the wireless communication resource determined in the resource allocation update cycle after the time obtained by adding the processing delay time to the current time (that is, the allocation calculation time). do.

FIG. 10 shows a process executed by the base station 120 in place of FIG. 6 in the third embodiment. S31 is executed by the vehicle management unit 122, S32 to S35 are executed by the allocation determination unit 123, and S36 is executed by the base station side communication control unit 124.

The processing of S31 is the same as that of S21 in FIG. In S32, the fixed future transmission data size is calculated for each vehicle. The confirmed future transmission data size is the data size of the data transmitted by the vehicle-mounted terminal 110 with the confirmed future wireless communication resource.

Describe the confirmed future wireless communication resources. Even if the base station 120 determines the resource allocation amount for the vehicle-mounted terminal 110, it takes time for the base station 120 and the vehicle-mounted terminal 110 to communicate with each other and the vehicle-mounted terminal 110 to acquire the resource allocation amount. .. This time is used as the allocated resource grant time. Further, even after the in-vehicle terminal 110 has acquired the allocated resource, it takes time to transmit the data with the acquired resource. This time is used as the allocated resource reflection time.

Even if the base station 120 determines the resource allocation amount for the vehicle-mounted terminal 110, the time when the vehicle-mounted terminal 110 can reflect the resource allocation amount is from the time when the base station 120 determines the resource allocation amount for the vehicle-mounted terminal 110. , After the above allocation resource allocation time and allocation resource reflection time have elapsed. In the following, the processing delay time is defined as the time from the time when the base station 120 determines the resource allocation amount for the vehicle-mounted terminal 110 to the time when the vehicle-mounted terminal 110 can reflect the resource allocation amount.

FIG. 11 illustrates the allocated resource allocation time, allocated resource reflection time, and processing delay time. The processing delay time is a time including at least the allocated resource grant time and the allocated resource reflection time. In the present embodiment, this processing delay time is predetermined and stored in a predetermined storage unit of the base station 120.

The time when the resource allocation amount can be reflected is after the time when the processing delay time is added to the current time. In other words, the time from the current time until the processing delay time elapses is the future time, but it can be said that the resource allocation amount is fixed. Therefore, the processing delay time can also be said to be the wireless communication resource determination period. The resource allocation amount for the time from the current time to the elapse of the processing delay time is a fixed future wireless communication resource.

Except when a certain in-vehicle terminal 110 first enters the communication area of the base station 120, the resource allocation amount from the current time to the processing delay time destination has already been determined. If the execution of FIG. 10 is performed when a certain vehicle-mounted terminal 110 first enters the communication area of the base station 120, the initial setting value is used. Calculate the data size that can be transmitted during the wireless communication resource confirmation period based on the resource allocation amount from the current time to the processing delay time destination. The calculated data size is the future transmission data size.

In FIG. 11, the time t11 is the time when the resource allocation process is performed, that is, the time when FIG. 10 is executed. The time t11 to the time t12 is the allocated resource grant time, and the time t12 to the time t13 is the allocated resource reflection time. The time ahead of the processing delay time from the current time is the allocation update time.

Time t14 is the next resource allocation update time after time t11. Further, the vertical axis of FIG. 11 shows the communication speed of data transmission by one in-vehicle terminal 110. Therefore, in FIG. 11, the data value distribution information of the vehicle-mounted terminal 110 in the future is predicted based on the data value distribution information received from the vehicle-mounted terminal 110, and the frequency block assigned to the vehicle-mounted terminal 110 is changed. In this respect, it differs from the resource allocation processing method described in the previous embodiments.

In the third embodiment, a method of resource allocation processing different from the previous embodiments is also described. In the third embodiment, based on the transmission waiting data value distribution information of each in-vehicle terminal 110, the earliest time in the frequency block (that is, the column in FIG. 8) of each time in the resource allocation update cycle is in order from the data having the highest data value. Allocate a frequency block of. In other words, based on the transmission waiting data value distribution information possessed by the plurality of in-vehicle terminals 110, the wireless communication resource block at the earliest time is assigned in order from the data having the highest data value. Since the resource allocation amount is determined by such a method, in FIG. 11, the communication speed fluctuates even between the time t11 and the time t14, which is the resource allocation update cycle for one time.

In S33, the transmission waiting data value distribution information after the allocation update time is updated for each vehicle 1, that is, for each in-vehicle terminal 110. The process of S33 will be described with reference to FIG. FIG. 12A is transmission waiting data value distribution information received from the in-vehicle terminal 110. FIG. 12A is the same as the transmission waiting data value distribution information at time t1 of the vehicle 1A in FIG. 7.

The time t11 shown in FIG. 12B is the current time during which FIG. 10 is being executed. At this point, since there is received data, the in-vehicle terminal 110 updates the transmission waiting data value distribution information by assuming that the data has been transmitted from the time when the transmission waiting data value distribution information is transmitted by the received data size. FIG. 12B corresponds to the result of the process of S31 in FIG.

FIG. 12C is obtained by removing the data from the transmission waiting data value distribution information shown in FIG. 12B by the confirmed future transmission data size calculated in S32 from the side with the higher data value. The distribution shown in FIG. 12C is the transmission waiting data value distribution information after the allocation update time updated in S33.

S34 is the same as S22 in FIG. 6, and grasps the wireless communication resource that can be allocated. In S35, the resource allocation amount after the allocation update time is determined based on the data value distribution information updated in S33 and the wireless communication resource grasped in S34. In S36, the information regarding the allocated amount of the wireless communication resource thus determined is transmitted to each in-vehicle terminal 110.

In the third embodiment, the allocation determination unit 123 updates the data value distribution information after the allocation update time, which is the time obtained by adding the processing delay time to the current time (S33). Then, the allocation amount of the wireless communication resource after the allocation update time is determined based on the updated transmission waiting data value distribution information. That is, the data size transmitted between the generation time of the data value distribution information and the resource allocation time is predicted, and the data value distribution information is corrected by the data size. Therefore, even if the generation time of the data value distribution information transmitted from the vehicle 1 is significantly different from the resource allocation time, the wireless communication is more suitable for the data value distribution status of the data value distribution waiting to be actually possessed by the vehicle 1. Resources can be allocated, and it is possible to avoid a decrease in the total value of data distributed throughout the wireless communication system.

<Fourth Embodiment>
In the fourth embodiment, the transmission waiting data to be generated in the future is predicted, and the predicted transmission waiting data data is also reflected in the transmission waiting data value distribution information. Update the resource allocation amount based on the reflected data value distribution information waiting to be sent.

The features of the fourth embodiment will be described with reference to FIG. In FIG. 13, the vehicle 1A is traveling along the planned travel route 140. The planned travel route 140 represents a future travel route.

The resource allocation request information creation unit 113 of the in-vehicle terminal 110 includes the planned travel route 140 in the resource allocation request information and transmits the resource allocation request information to the base station 120. The scheduled travel route 140 is information including the scheduled time of passing through some points on the route in addition to the route. By including the scheduled time to pass through several points, it is possible to calculate the scheduled time to pass through each point on the planned travel route 140 by the interpolation calculation. The resource allocation request information also includes the information described in the previous embodiments.

The base station 120 determines whether or not there is a point for generating transmission waiting data in the planned travel route 140 included in the resource allocation request information. In FIG. 13, the point X is a point where the data waiting to be transmitted is generated. If it is determined that there is a point on the planned travel route 140 to generate the transmission waiting data, the transmission waiting data value distribution information is created by adding the data to be generated at that point. This point is a feature of the fourth embodiment.

Hereinafter, the fourth embodiment will be specifically described. FIG. 14 is a block diagram of the base station 420 of the fourth embodiment. The base station 420 includes a vehicle management unit 422 that is different from the vehicle management unit 122 of the first embodiment. It also includes a map storage unit 426.

The data generation point storage map 427 is stored in the map storage unit 426. The data generation point storage map 427 is a map in which the data generation point where the data waiting to be transmitted is generated and the type of data generated at the data generation point are stored. For example, some or all intersections are stored as data generation points. At an intersection, image data obtained by photographing the intersection is generated as transmission waiting data. In addition, points where data generation can be set or predicted in advance, such as points where accidents occur frequently and points where traffic congestion is likely to occur, may be stored as points where image data is generated as waiting data for transmission. ..

Further, the type of data waiting to be transmitted is not limited to image data. For example, vehicle behavior data such as speed data may be transmission waiting data. The point where the velocity data is generated is, for example, a fixed distance or a fixed time interval.

Similar to the vehicle management unit 122 of the first embodiment, the vehicle management unit 422 manages which base station 120 the vehicle-mounted terminal 110 is communicating with, and sequentially determines the resource allocation amount for each vehicle-mounted terminal 110. The process of the allocation determination unit 423 that performs the resource allocation process is different from the conventional embodiment. Further, the vehicle management unit 422 includes a value determination unit 425.

When the resource allocation request information transmitted from the in-vehicle terminal 110 includes the planned travel route 140, the value determination unit 425 compares the planned travel route 140 with the data generation point storage map 427. Then, when the in-vehicle terminal 110 determines that the data will pass through the data generation point within the time for transmitting the data using the wireless communication resource to be allocated next, the in-vehicle terminal 110 generates the data waiting to be transmitted at the data generation point. Predict.

When it is predicted that the in-vehicle terminal 110 will generate the transmission waiting data at the data generation point, the type of the transmission waiting data generated by the in-vehicle terminal 110 at the data generation point is determined with reference to the data generation point storage map 427. It also estimates the size of the data to be generated. The data size is determined based on the type of data. This is because the data size differs depending on whether the type of data is image data or vehicle behavior data. Further, the value determination unit 425 also determines the data value of the transmission waiting data to be generated at the data generation point to be traveled in the future with reference to the table described in the above-described embodiment.

The allocation determination unit 423 determines the resource allocation amount in the next resource allocation update cycle, including the data value determined by the value determination unit 425. The resource allocation amount determined here also includes the allocation amount of the wireless communication resource at the transmission time when the vehicle-mounted terminal 110 transmits the predicted transmission waiting data. The processing of the allocation determination unit 423 will be described with reference to FIG.

FIG. 15 shows a process to be executed in place of FIG. 10 in the fourth embodiment. The process shown in FIG. 15 differs from FIG. 10 in that S33-1 and S33-2 are executed between S33 and S34.

In S33-1, the data value and data size of the additional transmission waiting data are estimated for each vehicle 1. The additional transmission waiting data is the transmission waiting data newly generated within the time allocated as the wireless communication resource this time, that is, the transmission waiting data that needs to be added to the current transmission waiting data. This S33-1 is executed by the value determination unit 425.

In order to determine the data value of the additional transmission waiting data, first, the data type of the additional transmission waiting data is determined by comparing the data generation point storage map 427 with the planned travel route 140 included in the resource allocation request information. decide. After determining the data type, the data value is determined by referring to the table as in the previous embodiments. The data size of the additional transmission waiting data is determined by referring to the relationship between the data type and the data size. Further, the standard data size may be stored in the data generation point storage map 427. When the standard data size is stored in the data generation point storage map 427, the data size estimated in S33-1 is the standard data size.

In S33-2, the transmission-waiting data value distribution information updated in S33 is modified based on the data value and data size estimated in S33-1 for the additional transmission-waiting data that will be additionally generated in the future. The process of S33-2 will be specifically described with reference to FIG.

16 (A) is the same as FIG. 12 (C). Therefore, FIG. 16A is an example of the transmission waiting data value distribution information updated in S33. The additional transmission waiting data estimated in S33-1 is added to the transmission waiting data value distribution information shown in FIG. 16 (B). By adding this additional transmission waiting data, among the confirmed future transmission data, the data whose data value is lower than the additional transmission waiting data is the same data size as the additional transmission waiting data, and the transmission waiting data at the allocation update time. Will be changed to. As a result, the data value distribution information at the allocation update time after being corrected by executing S33-2 has the distribution shown in FIG. 16 (C). In S33-2, this correction process is performed for each vehicle 1. After executing S33-2, the process proceeds to S34. Subsequent processing is the same as that of the third embodiment.

In the fourth embodiment, when it can be estimated that the additional transmission waiting data will be generated within the time for transmitting the data using the wireless communication resource to be allocated next, the data value and the data size of the additional transmission waiting data are estimated. Then, the transmission waiting data value distribution information reflecting the additional transmission waiting data is created (S33-2). By doing so, when the vehicle-mounted terminal 110 performs communication according to the next resource allocation amount, the value obtained by using the wireless communication resource can be further increased.

<Fifth Embodiment>
In the fifth embodiment, the transmission waiting data held by the vehicle-mounted terminal 110 is distributed among the plurality of base stations 120 in a plurality of communication areas 125 (see FIG. 17) managed by the plurality of base stations 120.

FIG. 17 shows communication areas 125A, 125B, 125C, 125D, 125E, 125F, 125G. When these communication areas 125A, 125B, 125C, 125D, 125E, 125F, and 125G are not distinguished, they are described as communication area 125. The communication area may include a communication area separately in one communication area, or a part of the communication area may overlap. Further, FIG. 17 shows many vehicles 1. However, for convenience of illustration, only some of the vehicles 1 are designated by the reference numerals of the vehicle 1 and the in-vehicle terminal 110. Further, in FIG. 17, the straight line overlapping with the vehicle 1 is a road conceptually shown.

The base station management unit 130 manages wireless communication resources in these plurality of communication areas 125. That is, the base station management unit 130 manages a plurality of base stations 120. The technique disclosed in the fifth embodiment can also be applied to the base station 420 of the fourth embodiment. However, in the following, for convenience of explanation, the fifth embodiment will be applied to the base station 120 for description.

The in-vehicle terminal 110 includes the transmission deadline of the data waiting to be transmitted in the resource allocation request information and transmits the information. In addition, the planned travel route information is transmitted. In addition to this, the resource allocation request information also includes the information described in the previous embodiments, such as the current position of the vehicle 1, the type and data size of the data waiting to be transmitted. The planned travel route information is information that determines the planned travel route 140. The planned travel route information does not need to be transmitted together with the resource allocation request information, and may be transmitted at least when the planned travel route 140 is determined and when the planned travel route 140 is changed.

In the fifth embodiment, the base station 120 transmits the resource allocation request information received from the in-vehicle terminal 110 to the base station management unit 130. The in-vehicle terminal 110 transmits the resource allocation request information to the base station management unit 130 when the resource allocation request information includes the transmission deadline of the data waiting for transmission. Based on the resource allocation request information, the base station management unit 130 sets the communication area 125 having the lowest wireless communication resource usage rate among the communication areas 125 of the base station 120 that the vehicle-mounted terminal 110 can reach within the transmission deadline. , The communication area 125 for transmitting the data waiting to be transmitted is determined.

FIG. 18 is a flowchart showing a process executed by the base station management unit 130. The process shown in FIG. 18 is executed when the base station management unit 130 acquires the resource allocation request information.

In S51, resource allocation request information is acquired. In S52, it is determined whether or not the acquired resource allocation request information includes the expiration date of the data waiting to be transmitted and the expiration date is after the time when the communication area 125 currently being connected is passed. The time for passing through the currently connected communication area 125 can be determined from the planned travel route 140.

If the judgment of S52 is NO, the process proceeds to S53. In S53, it is determined to execute the resource allocation process in the connected communication area 125, and the base station 120 including the communication area 125 is instructed to perform the resource allocation process.

On the other hand, if the determination in S52 is YES, the process proceeds to S54. In S54, the communication area 125 that can be reached within the transmission deadline defined for the transmission waiting data is extracted. The point where the transmission deadline can be reached can be calculated from the planned travel route 140. In FIG. 17, the point _PDL is a point where the transmission deadline can be reached. In the case of the example of FIG. 17, the communication areas 125 that can be reached within the transmission deadline are the communication areas 125A, 125B, and 125C.

In S55, among the communication areas 125 extracted in S54, the communication area 125 in which the wireless communication resource is the most vacant, that is, the communication area 125 in which the usage rate of the wireless communication resource is the lowest is determined. The usage rate here is calculated on the assumption that the transmission waiting data whose transmission deadline is after entering the communication area 125 having the lowest usage rate is transmitted in the communication area 125. Further, the same processing is performed for the other vehicle 1. As a result, the in-vehicle terminal 110 can predict the usage rate of the wireless communication resource in the communication area 125 at a future point in time when the vehicle-mounted terminal 110 enters the communication area 125 having the lowest usage rate.

In this way, after the communication area 125 having the lowest usage rate is determined, the transmission waiting data to be transmitted in the communication area 125 and the transmission waiting data to be transmitted in the communication area 125 in which the in-vehicle terminal 110 currently exists are present. Divide into data. Then, with respect to the latter, the base station 120 including the communication area 125 in which the in-vehicle terminal 110 currently exists is instructed to execute the resource allocation process by the process described in the previous embodiments. When the usage rates of wireless communication resources are the same in a plurality of communication areas 125, the communication area 125 close to the current position is adopted.

On the other hand, regarding the former, the in-vehicle terminal 110 is notified of the communication area 125 for executing the resource allocation process. Further, the base station 120 having the communication area 125 for executing the resource allocation process is also instructed to execute the resource allocation process. Upon receiving this notification, the in-vehicle terminal 110 recognizes the transmission waiting data transmitted in the communication area 125 having the lowest usage rate, excludes the transmission waiting data transmitted in the communication area 125 having the lowest usage rate, and is currently present. Data can be transmitted in the existing communication area 125.

By making this fifth embodiment, it is possible to increase the total value of the data distributed per unit time in the entire plurality of communication areas 125.

<Sixth Embodiment>
19 and 20 show the configurations of the in-vehicle terminal 610 and the base station 620 included in the communication system of the sixth embodiment. As shown in FIG. 20, the base station 620 is provided with a value determination unit 625, and as shown in FIG. 19, the in-vehicle terminal 610 is not provided with a value determination unit. That is, in the sixth embodiment, the base station 620 determines the data value. The in-vehicle terminal 610 transmits information necessary for the base station 620 to determine the data value to the base station 620.

[Configuration of in-vehicle terminal 610]
As shown in FIG. 19, the in-vehicle terminal 610 includes a data size calculation unit 614 and a value determination information creation unit 615. In addition, it includes a resource allocation request information creation unit 613 whose processing is different from that of the past.

The data size calculation unit 614 calculates the data size of the transmission waiting data held by the data standby unit 111 for each data type. The value determination information creation unit 615 creates data value determination information which is information for determining the data value. The data valuation information includes the type of data awaiting transmission.

The resource allocation request information creation unit 613 creates resource allocation request information including the data value determination information created by the value determination information creation unit 615 and the data size for each type of data waiting to be transmitted calculated by the data size calculation unit 614. do. The resource allocation request information includes an ID of the vehicle-mounted terminal 610 and a message indicating that the allocation of wireless communication resources is requested. In addition to this, information other than the data value that was included in the resource allocation request information in the previous embodiments may also be included in the resource allocation request information in the sixth embodiment. The timing for creating the resource allocation request information may be the same as in the previous embodiments.

The resource allocation request information creation unit 613 transmits the created resource allocation request information from the mobile station side communication unit 114 to the base station 620.

[Configuration of base station 620]
As shown in FIG. 20, the base station 620 includes a vehicle management unit 622. The vehicle management unit 622 includes a value determination unit 625 and an allocation determination unit 123. The resource allocation request information transmitted by the in-vehicle terminal 610 is received by the base station side communication unit 121.

The value determination unit 625 acquires this resource allocation request information from the base station side communication unit 121, and uses the data value determination information included in the resource allocation request information to receive transmission waiting data held by the in-vehicle terminal 610. Determine the data value of. In the present embodiment, the data value distribution information of the data waiting to be transmitted, that is, the data value distribution information waiting to be transmitted is determined by also using the data size. The value determination unit 625 provides the determined data value distribution information to the allocation determination unit 123.

When the data value distribution information is provided from the value determination unit 625, the allocation determination unit 123 determines the resource allocation amount for the in-vehicle terminal 610 in the same manner as in the conventional embodiments.

<7th Embodiment>
21 and 22 show the configurations of the in-vehicle terminal 710 and the base station 720 included in the communication system of the seventh embodiment. As shown in FIG. 21, the vehicle-mounted terminal 710 according to the seventh embodiment includes a value determination unit 712 and a resource allocation request information creation unit 713, which are processed differently from the conventional ones.

[Configuration of in-vehicle terminal 710]
The value determination unit 712 determines the throughput value as the data value. The throughput value is a value obtained by dividing the value (¥) of the data waiting to be transmitted by the required throughput (bit / s). The value of the data waiting to be transmitted is a value obtained by multiplying the data value unit price per unit data size preset for each type of data by the data size. That is, the value of the data waiting to be transmitted means the price (¥) of the data waiting to be transmitted as a whole. The required throughput (bit / s) is the throughput required to transmit the data waiting to be transmitted within the transmission deadline of the data waiting to be transmitted. The transmission deadline is stored in advance for each type of data, and is indicated by the elapsed time from the time of data generation. The throughput value indicates the value per unit throughput for each data (¥ / (bit / s)). The value determination unit 712 provides the determined throughput value to the resource allocation request information creation unit 713.

The resource allocation request information creation unit 713 creates resource allocation request information including the throughput value for each waiting data and the transmission deadline for each waiting data. The resource allocation request information includes an ID of the vehicle-mounted terminal 710 and a message indicating that the allocation of wireless communication resources is requested. The timing for creating the resource allocation request information may be the same as in the previous embodiments. The resource allocation request information creation unit 713 transmits the created resource allocation request information from the mobile station side communication unit 114 to the base station 720.

[Configuration of base station 720]
As shown in FIG. 22, the base station 720 includes an allocation determination unit 723 whose processing is different from the conventional one. The processing of the allocation determination unit 723 will be described with reference to FIG. 23. The process shown in FIG. 23 is a process to be executed instead of FIG. In FIG. 23, S78 is executed by the communication control unit 124 on the base station side. Other processing is executed by the allocation determination unit 723.

In S71, the throughput value distribution of the transmission waiting data of each vehicle 1 is determined. The throughput value distribution will be described with reference to FIG. FIG. 24 illustrates the throughput value distribution of vehicles 1A, 1B, 1C, and 1D. The throughput value distribution is obtained by accumulating the relationship between the transmission deadline and the throughput value for each type of data for each vehicle 1 on the time axis for the transmission waiting data of all vehicles managed by the base station 720.

The throughput value distribution will be specifically described by taking vehicle 1A as an example. The vehicle 1A holds data in which the time when the transmission deadline elapses is time t22 and the throughput value is P1 and the data in which the time when the transmission deadline elapses is time t21 and the throughput value is P2 are held as transmission waiting data. There is.

In S72, it is determined whether or not there is transmission delay data. The presence or absence of transmission delay data is based on the transmission deadline and data size for each transmission waiting data included in the resource allocation request information received from the in-vehicle terminal 710 and the data size received by the base station 720 from the in-vehicle terminal 710. to decide.

If there is data that could not be transmitted by the transmission deadline, there will be transmission delay data. Further, even if there is data for which the transmission deadline has not passed but all the data cannot be transmitted within the transmission deadline with the current throughput, it is considered that there is transmission delay data. If the judgment of S72 is YES, the process proceeds to S73, and if NO, the process proceeds to S74. S73 will be described later.

In S74, the throughput values for the vehicle 1 to which the wireless communication resource needs to be allocated are totaled for each time. A graph showing the total throughput value is shown at the bottom of FIG. 24.

In S75, the relative throughput value is determined. The relative throughput value is a normalization of the total throughput value in S74. FIG. 25A shows the relative throughput value.

In S76, the wireless communication resource is grasped. The processing of S76 is the same as that of S22. In S77, the resource allocation amount is determined. FIG. 25B conceptually shows the wireless communication resource grasped in S76 by taking LTE as an example. In S77, the graph showing the relative throughput value determined in S75 can be determined by dividing the graph by the wireless communication resource grasped in S76.

In S78, information regarding the allocation amount of the wireless communication resource thus determined is transmitted to each in-vehicle terminal 710. When each in-vehicle terminal 710 receives information regarding the allocation amount of the wireless communication resource from the base station 720, each in-vehicle terminal 710 sequentially transmits transmission waiting data in descending order of throughput value according to the allocation.

Here, S73 will be described. In S73, the throughput value of the in-vehicle terminal 710 in which the transmission delay occurs is corrected based on the transmission delay data size. A method of calculating the transmission delay data size will be described with reference to FIG. FIG. 26A is the same view as the uppermost row of FIG. 24. It is assumed that the throughput value distribution shown in FIG. 26 (A) is at time t0.

FIG. 26B is a time point at which the in-vehicle terminal 710 receives the resource allocation amount from the base station 720 and transmits the transmission data to some extent, and the transmission delay data is conceptually illustrated. By receiving data from the vehicle-mounted terminal 710, the base station 720 can grasp the data size that the vehicle-mounted terminal 710 can actually transmit, that is, the data size of the transmitted data. FIG. 26B also illustrates the transmitted data. The portion excluding the transmitted data is the throughput value distribution for the transmission waiting data updated at time t10.

On the other hand, the base station 720 acquires the data size and the transmission deadline for each transmission waiting data from the in-vehicle terminal 710. Therefore, since the base station 720 does not cause a transmission delay, the base station 720 can also grasp the data size to be transmitted by the in-vehicle terminal 710 during the time from the allocation of the wireless communication resource to the current time.

The difference between the data size to be transmitted by the in-vehicle terminal 710 by the current time and the data size of the transmitted data so as not to cause a transmission delay is the data size of the transmission delay data. FIG. 26B also shows transmission delay data.

In S73, the throughput value distribution of each vehicle 1 is corrected based on the transmission delay data size so that the larger the transmission delay data size is, the more wireless communication resources are allocated as compared with the case where the correction is not performed. An example of the correction method will be described. An example of the correction method is an example using a correction coefficient. The correction coefficient is the denominator as the total value of the data size of the transmission delay data that cannot be transmitted by each in-vehicle terminal 710 to which the wireless communication resource is allocated, and the numerator is the data size of the transmission delay data that cannot be transmitted by each in-vehicle terminal 710. And. This correction coefficient is corrected by multiplying the throughput value of the throughput value distribution of each in-vehicle terminal 710. By making such corrections, the larger the transmission delay data size, the higher the throughput value. With this corrected throughput value distribution, the total throughput value of S74 is calculated.

[Summary of the 7th embodiment]
As shown in this seventh embodiment, the data value can also be a throughput value, that is, a value per unit throughput for each data. This throughput value is determined based on the transmission deadline. The transmission deadline is predetermined for each type of data and does not fluctuate depending on the amount of funds of the user. Therefore, even if the resource allocation amount is determined based on this throughput value, the public value of the wireless communication resource can be increased.

Further, in the seventh embodiment, the allocation determination unit 723 updates the transmission waiting data based on the data size of the data received from the in-vehicle terminal 710. Then, the throughput value is corrected based on the data size of the updated transmission waiting data, that is, the data whose transmission deadline has passed, that is, the transmission delay data (S73). The allocation amount of wireless communication resources is determined based on the corrected throughput value. By doing so, it is possible to prevent the transmission delay data from being transmitted at a later time.

Although the embodiments have been described above, the disclosed technology is not limited to the above-described embodiment, and the following modifications are also included in the disclosed scope, and further, within the scope not deviating from the gist other than the following. It can be changed in various ways.

<Modification 1>
In the fourth embodiment, the vehicle-mounted terminal 110 includes the planned travel route 140 in the resource allocation request information and transmits the information. The planned travel route 140 estimates the type of transmission waiting data that will occur in the future. When the in-vehicle terminal 110 has periodic transmission data to be periodically transmitted to the base station 420, the transmission cycle of the periodic transmission data may be included in the resource allocation request information and transmitted, as in the planned travel route 140.

In this case, the value determination unit 425 of the base station 420 predicts the transmission waiting data to be generated in the future based on the transmission cycle of the periodic transmission data, and also determines the data value of the predicted transmission waiting data. The in-vehicle terminal 110 may transmit the transmission cycle, and does not need to transmit the type of data. This is because the base station 420 can determine the type of data from the data received in the past. Of course, the in-vehicle terminal 110 may transmit the type of data in addition to the transmission cycle.

<Modification 2>
In the first modification, an example in which the vehicle-mounted terminal 110 transmits the transmission cycle of the periodic transmission data has been described. However, the base station 420 may determine the presence / absence of periodic transmission data periodically transmitted from the vehicle-mounted terminal 110 and the predicted transmission time of the periodic transmission data based on the data received so far. If the base station 420 can determine the predicted transmission time of the periodic transmission data, the base station 420 predicts the periodic transmission data as transmission waiting data at the predicted transmission time. It also determines the data value of the predicted periodic transmission data. The allocation determination unit 423 determines the allocation amount of the wireless communication resource at the predicted transmission time based on the data value of the periodic transmission data.

<Modification 3>
In the first embodiment, as a method of allocating wireless communication resources based on the data value, a method of comparing the data values of the data waiting to be transmitted and allocating the wireless communication resources in descending order of data value has been described. Further, in the second embodiment, a method of allocating wireless communication resources according to the data value ratio has been described. The method of allocating wireless communication resources based on the data value is not limited to the methods described so far.

For example, the median value distribution of the data value distribution of the data waiting to be transmitted held by each vehicle-mounted terminal 110 may be compared between the vehicle-mounted terminals 110, and the wireless communication resources may be allocated in descending order of the median value.

<Modification example 4>
Further, the average value of the transmission waiting data value per unit data size may be compared between the in-vehicle terminals 110, and the wireless communication resources may be allocated in descending order of the average value.

<Modification 5>
Further, the wireless communication resources may be allocated in descending order of the integrated value by comparing the transmission waiting data value per unit data size and the integrated value of the transmission waiting data size between the in-vehicle terminals 110.

<Modification 6>
In the embodiment, an in-vehicle terminal mounted on the vehicle 1 as a mobile station is shown. However, the moving body does not have to be the vehicle 1. The mobile body may be a person. In this case, the mobile station is carried by a person. Further, the moving body may be a flying body. Aircraft include those that are unmanned and remotely controlled wirelessly.

<Modification 7>
The base station 420 of the fourth embodiment is provided with the map storage unit 426, but without the map storage unit 426, the base station 420 may acquire the data generation point storage map 427 from the outside by communication each time. good.

<Modification 8>
In the seventh embodiment, the difference in throughput between the in-vehicle terminals 710 is not taken into consideration. Considering the difference in throughput between the in-vehicle terminals 710, the in-vehicle terminal 710 with a lower throughput may be allocated more wireless communication resources. By doing so, the transmission delay data can be further reduced.

<Modification 9>
In all of the embodiments described so far, the in-vehicle terminals 110, 610, and 710 upload data to the base stations 120, 420, 620, and 720. However, as shown in FIG. 27, even when the in-vehicle terminal 110 downloads data from the base station 120, that is, when the base station 120 transmits data, the technical idea of the embodiment or modification described so far. Is applicable. In FIG. 27, for convenience of illustration, the reference numerals of the in-vehicle terminal 110 and the base station 120 of the first embodiment are used.

When the base station 120 transmits data, a device capable of communicating with the base station 120 separately from the in-vehicle terminal 110, such as the base station management unit 130, provides data to be transmitted from the base station 120 to the in-vehicle terminal 110. Can be considered. In this case, the base station 120 includes a value determination unit, and the base station 120 determines the data value for the data transmitted to the plurality of vehicle-mounted terminals 110. The base station 120 also includes an allocation determination unit.

In addition, the base station side communication control unit 124 in the modification 9 transmits the transmission waiting data to each of the plurality of vehicle-mounted terminals 110 by the allocation of the radio resource determined by the allocation determination unit. Therefore, in the modified example 9, the base station side communication control unit 124 does not need to transmit the resource allocation amount to the vehicle-mounted terminal 110.

1: Vehicle 100: Communication system 110: In-vehicle terminal 111: Data standby unit 112: Value determination unit 113: Resource allocation request information creation unit 114: Mobile station side communication unit 120: Base station 121: Base station side communication unit 122: Vehicle Management unit 123: Allocation determination unit 124: Base station side communication control unit 125: Communication area 130: Base station management unit 140: Scheduled travel route 420: Base station 422: Vehicle management unit 423: Allocation determination unit 425: Value determination unit 426 : Map storage unit 427: Data generation point storage map 610: In-vehicle terminal 613: Resource allocation request information creation unit 614: Data size calculation unit 615: Value determination information creation unit 620: Base station 622: Vehicle management unit 625: Value determination unit 710: In-vehicle terminal 712: Value determination unit 713: Resource allocation request information creation unit 720: Base station 723: Allocation determination unit

Claims (21)

A mobile station ( 110 ) equipped with a mobile station-side communication unit (114) that moves with a mobile body and performs wireless communication.
A base station (120, 420, 620, 720) including a base station side communication unit (121) that communicates with the mobile station side communication unit, and
It is a communication system equipped with
The mobile station is a data value that is a value for transmission waiting data, which is data to be transmitted, based on the type of data to be transmitted and a predetermined standard, and is the data value of the transmission waiting data transmitted from the mobile station. It is equipped with a value determination unit (112 ) that determines the data value for the data .
The base station is
Based on the allottable wireless communication resource and the data value determined by the value determination unit, the allocation amount of the wireless communication resource for transmitting the transmission waiting data to the plurality of mobile stations is determined. Allocation determination unit (123, 423, 723) and
A base station-side communication control unit (124) that performs communication with the mobile station based on the allocation amount of the wireless communication resource determined by the allocation determination unit is provided .
The base station-side communication control unit causes the base station-side communication unit to transmit information regarding the allocation amount of the wireless communication resource determined by the allocation determination unit to the mobile station.
The mobile station creates resource allocation request information including the data value determined by the value determination unit and the data size of the transmission waiting data, and the created resource allocation request information is transmitted from the mobile station side communication unit to the base. It is equipped with a resource allocation request information creation unit (113) to be transmitted to the station.
The allocation determination unit acquires transmission-waiting data value distribution information representing the distribution of the data size for each data value from the resource allocation request information received by the base station-side communication unit, and the acquired transmission-waiting data value. Based on the distribution information and the allottable wireless communication resource, the allocation amount of the wireless communication resource to the plurality of mobile stations is determined in a cycle shorter than the cycle in which the mobile station transmits the resource allocation request information. Communication system. A mobile station ( 610 ) equipped with a mobile station-side communication unit (114) that moves with a mobile body and performs wireless communication.
A base station ( 620 ) provided with a base station side communication unit (121) that communicates with the mobile station side communication unit, and
It is a communication system equipped with
The base station is a data value that is a value for transmission waiting data, which is data to be transmitted, based on the type of data to be transmitted and a predetermined standard, and is the data value to be transmitted from the mobile station. It is equipped with a value determination unit (6 25) that determines the data value for the data .
The base station is
Based on the allottable wireless communication resource and the data value determined by the value determination unit, the allocation amount of the wireless communication resource for transmitting the transmission waiting data to the plurality of mobile stations is determined. Allocation determination unit (123, 423 ) and
A base station-side communication control unit (124) that performs communication with the mobile station based on the allocation amount of the wireless communication resource determined by the allocation determination unit is provided .
The base station-side communication control unit causes the base station-side communication unit to transmit information regarding the allocation amount of the wireless communication resource determined by the allocation determination unit to the mobile station.
The mobile station
A value determination information creation unit (615) that creates data value determination information that is information for determining the data value and includes the type of data waiting to be transmitted.
Resource allocation request information creation that creates resource allocation request information including the data value determination information and the data size of the data waiting to be transmitted, and causes the mobile station side communication unit to transmit the created resource allocation request information to the base station. With a part (613)
The value determination unit determines the data value based on the data value determination information included in the resource allocation request information received by the base station side communication unit.
The allocation determination unit is a cycle in which the mobile station transmits the resource allocation request information based on the transmission waiting data value distribution information representing the distribution of the data size for each data value and the allottable wireless communication resource. A communication system that determines the allocation amount of the wireless communication resource in a shorter cycle. The allocation determination unit (123) updates the transmission waiting data value distribution information based on the data size of the data received from the mobile station, and the wireless communication based on the updated transmission waiting data value distribution information. The communication system according to claim 1 or 2 , which determines the amount of resource allocation. The allocation determination unit (123) determines the processing delay time from the determination of the allocation amount of the wireless communication resource to the reflection of the allocation of the wireless communication resource in the transmission processing of the mobile station. The transmission-waiting data value distribution information after the allocation update time, which is the time added to the determined time, is updated, and the wireless communication resource allocation after the allocation update time is based on the updated transmission-waiting data value distribution information. The communication system according to claim 3 , wherein the amount is determined. The communication system includes a base station management unit (130) that manages a plurality of the base stations.
The mobile station transmits the transmission deadline of the data waiting to be transmitted, and the mobile station transmits the transmission deadline.
The base station management unit acquires the transmission deadline of the transmission waiting data transmitted by the mobile station, and in the communication area of the base station that the mobile station can reach within the transmission deadline, the said in the communication area. When it is assumed that the mobile station transmits the transmission waiting data, the communication area having the lowest usage rate of the wireless communication resource is determined as the communication area for transmitting the transmission waiting data.
When the communication area of the base station is determined by the base station management unit to be the communication area for transmitting the transmission waiting data, the mobile station will be able to use the mobile station of the base station in the future by the allocation determination unit. The communication system according to any one of claims 1 to 4 , wherein the wireless communication resource is allocated to the transmission waiting data to be transmitted in the communication area . The communication according to any one of claims 1 to 4 , wherein the allocation determination unit determines the allocation amount of the wireless communication resource to the plurality of mobile stations based on the median value of the data value distribution information waiting to be transmitted. system. The communication according to any one of claims 1 to 4 , wherein the allocation determination unit determines the allocation amount of the wireless communication resource to the plurality of mobile stations based on the average value of the transmission waiting data value distribution information. system. The communication according to any one of claims 1 to 4 , wherein the allocation determination unit determines the allocation amount of the wireless communication resource to the plurality of mobile stations based on the integrated value of the transmission waiting data value distribution information. system. The allocation determination unit according to any one of claims 1 to 4 , wherein the allocation determination unit determines the allocation amount of the wireless communication resource to the plurality of mobile stations in descending order of the data value in the transmission waiting data value distribution information. Communications system. A mobile station (110, 610, 710) equipped with a mobile station-side communication unit (114) that moves with a mobile body and performs wireless communication.
A base station (120, 420, 620, 720) including a base station side communication unit (121) that communicates with the mobile station side communication unit, and
It is a communication system equipped with
Either the mobile station or the base station is a data value that is a value for transmission waiting data, which is data to be transmitted, based on the type of data to be transmitted and a predetermined standard, and is the data value. A value determination unit (112, 425, 625, 712) for determining the data value for the transmission waiting data transmitted from the station is provided.
The base station is
Based on the allottable wireless communication resource and the data value determined by the value determination unit, the allocation amount of the wireless communication resource for transmitting the transmission waiting data to the plurality of mobile stations is determined. Allocation determination unit (123, 423, 723) and
A base station-side communication control unit (124) that performs communication with the mobile station based on the allocation amount of the wireless communication resource determined by the allocation determination unit is provided.
The base station-side communication control unit causes the base station-side communication unit to transmit information regarding the allocation amount of the wireless communication resource determined by the allocation determination unit to the mobile station.
The communication system includes a base station management unit (130) that manages a plurality of the base stations.
The mobile station transmits the transmission deadline of the data waiting to be transmitted, and the mobile station transmits the transmission deadline.
The base station management unit acquires the transmission deadline of the transmission waiting data transmitted by the mobile station, and in the communication area of the base station that the mobile station can reach within the transmission deadline, the said in the communication area. Assuming that the mobile station transmits the transmission waiting data, the communication area having the lowest usage rate of the wireless communication resource is determined as the communication area for transmitting the transmission waiting data.
When the communication area of the base station is determined by the base station management unit to be the communication area for transmitting the transmission waiting data, the mobile station will be able to use the mobile station of the base station in the future by the allocation determination unit. A communication system that allocates the wireless communication resource to the transmission waiting data to be transmitted in the communication area. The mobile station has the value determination unit .
In addition, the mobile station creates resource allocation request information including the data value determined by the value determination unit, and causes the mobile station side communication unit to transmit the created resource allocation request information to the base station. Equipped with a request information creation unit (113)
The allocation determination unit (123) acquires the data value from the resource allocation request information received by the base station side communication unit, and is based on the acquired data value and the allottable wireless communication resource. The communication system according to claim 10 , wherein the amount of the wireless communication resource allocated to the plurality of mobile stations is determined. The base station (620) includes the value determination unit (625).
The mobile station (610)
A value determination information creation unit (615) that creates data value determination information that is information for determining the data value and includes the type of data waiting to be transmitted.
It is provided with a resource allocation request information creation unit (613) that creates resource allocation request information including the data value determination information and transmits the created resource allocation request information from the mobile station side communication unit to the base station.
The communication system according to claim 10 , wherein the value determination unit determines the data value based on the data value determination information included in the resource allocation request information received by the base station side communication unit. The resource allocation request information includes the data size of the data waiting to be transmitted.
The communication system according to claim 11 or 12 , wherein the allocation determination unit determines an allocation amount of the wireless communication resource based on transmission waiting data value distribution information representing a data size distribution for each data value. The allocation determination unit (123) updates the transmission waiting data value distribution information based on the data size of the data received from the mobile station, and the wireless communication based on the updated transmission waiting data value distribution information. The communication system according to claim 13 , wherein the amount of resource allocation is determined. The allocation determination unit (123) determines the processing delay time from the determination of the allocation amount of the wireless communication resource to the reflection of the allocation of the wireless communication resource in the transmission processing of the mobile station. The transmission-waiting data value distribution information after the allocation update time, which is the time added to the determined time, is updated, and the wireless communication resource allocation after the allocation update time is based on the updated transmission-waiting data value distribution information. The communication system according to claim 14 , wherein the amount is determined. When the mobile station has periodic transmission data to be periodically transmitted to the base station, the mobile station transmits the transmission cycle of the periodic transmission data to the base station.
The value determination unit predicts the transmission waiting data to be generated in the future based on the transmission cycle of the periodic transmission data, and also determines the data value of the predicted transmission waiting data.
The allocation determination unit determines the allocation amount of the wireless communication resource at the transmission time when the mobile station transmits the predicted transmission waiting data based on the predicted data value of the transmission waiting data . 5. The communication system according to any one of 10 to 15 . The value determination unit will use the map (427) that stores the data generation point, which is the point where the transmission waiting data is generated in the mobile station, and the future movement route (140) of the mobile station in the future. The generated data waiting to be transmitted is predicted, and the data value of the predicted data waiting to be transmitted is also determined.
The allocation determination unit determines the allocation amount of the wireless communication resource at the transmission time when the mobile station transmits the predicted transmission waiting data based on the predicted data value of the transmission waiting data . 5. The communication system according to any one of 10 to 15 . The value determination unit determines the presence / absence of periodic transmission data periodically transmitted from the mobile station and the predicted transmission time of the periodic transmission data based on the data that the base station has received so far from the mobile station. Then, the predicted periodic transmission data is predicted as the transmission waiting data at the predicted transmission time, and the data value of the predicted periodic transmission data is also determined.
The communication according to any one of claims 1 to 5, 10 to 15 , wherein the allocation determination unit determines the allocation amount of the wireless communication resource at the predicted transmission time based on the data value of the periodic transmission data. system. A mobile station (110, 610, 710) equipped with a mobile station-side communication unit (114) that moves with a mobile body and performs wireless communication.
A base station (120, 420, 620, 720) including a base station side communication unit (121) that communicates with the mobile station side communication unit, and
It is a communication system equipped with
The mobile station is a data value that is a value for transmission waiting data, which is data to be transmitted, based on the type of data to be transmitted and a predetermined standard, and is the data value of the transmission waiting data transmitted from the mobile station. It is equipped with a value determination unit ( 712) that determines the data value for the data .
The base station is
Based on the allottable wireless communication resource and the data value determined by the value determination unit, the allocation amount of the wireless communication resource for transmitting the transmission waiting data to the plurality of mobile stations is determined. Allocation determination unit ( 723) and
A base station-side communication control unit (124) that performs communication with the mobile station based on the allocation amount of the wireless communication resource determined by the allocation determination unit is provided.
The value determination unit determines the throughput value, which is the value obtained by dividing the data value by the required throughput determined from the transmission deadline determined for each transmission waiting data and the data size of the transmission waiting data, as the data value.
The mobile station further
A resource allocation request information creation unit that creates resource allocation request information including the throughput value and transmission deadline for each transmission waiting data, and causes the mobile station side communication unit to transmit the created resource allocation request information to the base station. With (713)
The allocation determination unit acquires the throughput value from the resource allocation request information received by the base station side communication unit, and has a plurality of allocation determination units based on the acquired throughput value and the allottable wireless communication resource. A communication system that determines the amount of the wireless communication resource allocated to the mobile station. The resource allocation request information includes the data size of the data waiting to be transmitted.
The allocation determination unit updates the transmission waiting data based on the data size of the data received from the mobile station, and the allocation determination unit updates the transmission waiting data based on the data size of the updated transmission waiting data for which the transmission deadline has passed. The communication system according to claim 19 , wherein the throughput value is corrected and the allocation amount of the wireless communication resource is determined based on the corrected throughput value. A mobile station equipped with a mobile station-side communication unit (114) that moves with a mobile body and performs wireless communication.
A value determination unit that determines the data value, which is the value of the data waiting to be transmitted from the mobile station, based on the type of data and predetermined criteria.
With the resource allocation request information creation unit (113) that creates resource allocation request information including the data value determined by the value determination unit and transmits the created resource allocation request information from the mobile station side communication unit to the base station. , Equipped with
The value determination unit determines the throughput value, which is the value obtained by dividing the data value by the required throughput determined from the transmission deadline determined for each transmission waiting data and the data size of the transmission waiting data, as the data value.
The mobile station further
A resource allocation request information creation unit that creates resource allocation request information including the throughput value and transmission deadline for each transmission waiting data, and causes the mobile station side communication unit to transmit the created resource allocation request information to the base station. A mobile station comprising (713) .

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