JP6350124B2 - Data relay apparatus, data relay method, and data relay program - Google Patents

Description

  The present invention relates to a data relay device such as a home gateway having a function as a wireless access point, a data relay method, and a data relay program.

  In wireless communication defined by IEEE802.11, when an ACK (reception response) from a terminal that has received packet data does not reach the transmitting side within a predetermined time, a mechanism for performing a certain number of retransmissions from the transmitting side (ARQ : Automatic retransmission control). For this reason, when the amount of communication data increases in a situation where the radio wave condition is bad, packet data is accumulated in a memory of a data relay device such as a wireless access point. If the amount of data stored in the memory continues to increase and the memory is compressed, the entire wireless access point system is affected, and communication services cannot be continued.

  Conventionally, a technique for reducing the trouble associated with the increase in the degree of memory compression as described above has been researched and developed. For example, Patent Document 1 discloses a plurality of techniques based on traffic priorities obtained from QoS parameters. Discloses a technique of adjusting the buffer size of a retransmission buffer allocated to each terminal apparatus. Patent Document 2 discloses a data processing device that transmits data packets from first and second buffers in response to a data request signal from a communication controller. A data buffer transferred once or more is stored in the second buffer of the data processing apparatus, and when the communication controller determines that the retransmission is abandoned, the data packet is transferred from the second buffer. ing.

JP 2010-154060 A JP 2004-187010 A

  However, the static memory control using a setting value such as the traffic priority in Patent Document 1 and the memory allocation technology specialized in protection of retransmission data shown in Patent Document 2 are diversified. It has not been possible to effectively use memory resources according to the communication state in a communication system. Since the memory capacity of the home gateway and the like is limited, it is assumed that a certain amount of data is discarded in the data retransmission control. Conventionally, flexible memory management considering the usefulness of residual data and subsequent data has been made. There is a request. That is, there has been a demand for a memory area control technique that reduces excessive allocation and insufficient distribution of memory resources for a certain service.

A data relay device according to the present invention includes a receiving unit that receives data from the outside, a storage unit that temporarily stores data received by the receiving unit, a transmission unit that transmits data temporarily stored in the storage unit, and a reception unit Quota for wireless communication between a communication management unit that transmits communication status data indicating the communication status of the communication unit and the transmission unit, and a data transmission destination in the storage unit based on the communication status data transmitted from the communication management unit determines, in the storage area of the serial 憶部, transmits possess information control unit that sets a region for wireless communications in accordance with the quota, the information control unit, reception unit among the data received from the outside Allocated from the network wireless communication amount that is the amount of data that the unit transmits by wireless communication and the wireless communication amount that is included in the data indicating the communication state of the transmitting unit in the communication state data and indicates the communication amount in the wireless space Amount One in which a constant.

The data relay method according to the present invention also includes a reception step of receiving data from the outside, a storage step of temporarily storing data received in the reception step in the storage unit, and data temporarily stored in the storage unit Radio between the transmission step, the output step for outputting the communication status data indicating the communication status in the reception step and the transmission step, and the data transmission destination in the storage unit based on the communication status data output by the output step a determination step of determining a quota for the communication, in a storage area in the serial 憶部, possess an area setting step of setting a region for wireless communications in accordance with the quota, and in the determining step from the outside at the receiving step Of the received data, the amount of network wireless communication, which is the amount of data transmitted by wireless communication in the transmission step, Included in the data indicating the communication condition at the transmitting step of the situation data, it determines the allocation amount from the radio traffic indicating the traffic in the wireless space.

Further, the data relay program according to the present invention includes a receiving unit that receives data from the outside, a storage unit that temporarily stores data received by the receiving unit in a storage unit, and a transmission unit that transmits data temporarily stored in the storage unit , Communication management means for transmitting communication status data indicating the status of communication by the receiving means and the transmission means, based on the communication status data transmitted by the communication management means, for wireless communication with the data transmission destination in the storage unit determining means for determining a quota, the storage area in及beauty Symbol 憶部, area setting means for setting a region for wireless communications in accordance with the quota, cause the computer to function as a determination means, receiving means from the outside The amount of data transmitted by the transmission means through the wireless communication among the received data, and the communication status of the transmission means in the communication status data Included in the data indicating, it is what determines the allocation amount from the radio traffic indicating the traffic in the wireless space.

  In the present invention, as described above, the method of determining the allocation amount of the storage area in the storage unit based on the status of wireless communication and the usage status of other services, and setting the memory according to the determined allocation amount, It is possible to provide a data relay device, a data relay method, and a data relay program that can smoothly process relay data stored in the memory and can effectively use memory resources.

It is a block diagram which shows the structure of the data relay apparatus in embodiment of this invention. It is the schematic which shows the service structure at the time of using the data relay apparatus of FIG. 3 is a table illustrating an allocation pattern of a memory unit used by the data relay device in FIG. 1. 3 is a table illustrating an allocation pattern table stored in a storage unit of the data relay device in FIG. 1. It is a table | surface which illustrates the transition conditions used as the selection criteria of each allocation pattern of FIG. 6 is a table illustrating the correspondence between each transition condition and each allocation pattern related to the first determination by the data relay device in FIG. 1. 6 is a table illustrating a correspondence relationship between each transition condition and each allocation pattern according to the second determination by the data relay device in FIG. 1. 3 is a flowchart showing the operation of the data relay device in FIG. 1.

  An embodiment of a data relay device according to the present invention will be described with reference to FIGS. As shown in FIG. 1, the data relay device 60 includes a receiving unit 10 that receives data from the outside, a memory unit (storage unit) 20 that temporarily stores data received by the receiving unit 10, and a temporary memory in the memory unit 20. Based on the communication status data transmitted from the transmission unit 30 for transmitting stored data, the communication management unit 40 for transmitting communication status data indicating the communication status of the reception unit 10 and the transmission unit 30, and the communication management unit 40. And an information control unit 50 that determines an allocation amount for wireless communication in the memory unit 20 and sets a storage area in the memory unit 20 in accordance with the determined allocation amount. Since the data relay device 60 has a wireless communication function defined by IEEE 802.11, it can also operate as a wireless access point.

  FIG. 2 is a schematic diagram showing a service configuration when the data relay device 60 is used. As shown in FIG. 2, a service network 100 and a wired terminal 110 are connected to the data relay device 60, and the data relay device 60 cooperates with the service network 100 to provide users who use the wired terminal 110. Provide basic services such as Internet communication. The data relay device 60 provides a priority service such as a voice call to a user who uses the telephone terminal 120 connected by a telephone line. Furthermore, the data relay device 60 can perform wireless communication with the wireless terminal 130 such as a PC, a tablet terminal, or a smartphone. Although FIG. 2 illustrates the telephone terminal 120 that performs voice communication, the data relay device 60 functions in the same manner for an IP telephone terminal or the like capable of communication using video as well as voice.

  As illustrated in FIG. 1, the communication management unit 40 includes a wired IF management unit 40a that manages wired communication and a wireless IF management unit 40b that manages wireless communication. The wired IF management unit 40a is connected to at least the receiving unit 10 and the information control unit 50. By monitoring the communication status of the receiving unit 10, the wired communication amount, the communication amount from the service network 100, and the connection terminal Information (wired space information) such as the link speed is managed, and this wired space information is periodically notified to the information control unit 50. The wireless IF management unit 40b is connected to the reception unit 10, the transmission unit 30, and the information control unit 50. By monitoring at least the communication status of the transmission unit 30, the wireless communication amount, the number of wireless terminals belonging, etc. Information (radio space information) is managed, and the radio space information is periodically notified to the information control unit 50. That is, the above-described communication status data is a general term for the wired space information transmitted from the wired IF management unit 40a to the information control unit 50 and the wireless space information transmitted from the wireless IF management unit 40b to the information control unit 50. 5 parameters shown in 3 are included.

  More specifically, the data relay device 60 acquires five parameters as shown in FIG. 3 by the wired IF management unit 40a and the wireless IF management unit 40b. The wireless communication amount that is the first parameter is information (communication amount in the wireless space) indicating how many megabits of data is transferred per second in the wireless space, and is a value in the range of 0 to 1000 Mbps. . The second parameter, the wired communication amount, is information indicating the communication amount from the service network 100, the communication amount with the wired terminal 110, and the communication amount at which the data relay device 60 terminates at its own device, and ranges from 0 to 1000 Mbps. The value is within the range. The wired terminal connection state, which is the third parameter, is information indicating whether or not the wired terminal 110 is connected (connected or not connected). The wired communication rate that is the fourth parameter is information indicating whether the link speed of the wired terminal 110 is 10M, 100M, or 1000M (1G). The presence / absence of a wired service, which is a fifth parameter, is information indicating whether the priority service is used or not, and this wired service includes services that have already started data communication. .

  The information control unit 50 determines an allocation amount (hereinafter referred to as “memory allocation amount”) for wireless communication in the storage area of the memory unit 20 based on the communication status data transmitted from the communication management unit 40. And a memory setting unit 52 that sets a storage area in the memory unit 20 in accordance with the allocation amount determined by the information management unit 51.

  The receiving unit 10 stores the received data in the memory unit 20. The transmission unit 30 is equipped with an antenna 30a for wireless communication. The transmission unit 30 transmits data stored in the memory unit 20 to the radio space and then receives an ACK (reception response) from a transmission destination radio terminal (not shown) until a predetermined condition is satisfied. Are continuously retransmitted. A memory unit 20, which is a volatile memory such as a DRAM, is connected to the receiving unit 10, the transmitting unit 30, and the memory setting unit 52, and stores data received from the receiving unit 10.

  The memory area in the memory unit 20 is provided by the memory setting unit 52 with a basic area used for providing a basic service, a wireless area used for the wireless function to retransmit stored data, and an extended service. A spare area to be used for this purpose is set. When the area corresponding to the data received by the receiving unit 10 is saturated, the memory unit 20 is configured such that the data cannot be stored even if there is a vacancy in another area.

  The information management unit 51 calculates a network wireless communication amount that is a communication amount from the service network 100 to the wireless space (communication amount of data for wireless communication transmitted from the service network 100) based on the communication status data. A wireless status determination unit 51a that determines whether or not the wireless communication amount is larger than the wireless communication amount, an allocation amount determination unit 51b that determines an allocation amount according to a determination result by the wireless status determination unit 51a, and a memory unit 20 An allocation pattern table in which a plurality of patterns (allocation patterns) defining the memory allocation amount are arranged, and a storage unit 51c for storing an allocation amount determination condition associated with each allocation pattern. Here, the determination of whether or not the network wireless communication amount by the wireless state determination unit 51a is larger than the wireless communication amount is the first determination.

  When calculating the network wireless communication amount, the wireless state determination unit 51a calculates the mathematical expression “network wireless communication amount = communication amount from the service network 100− (communication amount with the wired terminal 110 + communication amount terminated at its own device)”. (Network wireless calculation formula) is used. That is, the wireless status determination unit 51a uses the amount obtained by subtracting “the sum of the communication amount with the wired terminal 110 and the communication amount terminated at its own device” from the “communication amount from the service network 100” as the network wireless communication amount. Is to be calculated.

  When the wireless status determination unit 51a determines that the network wireless communication amount is greater than the wireless communication amount, the allocation amount determination unit 51b determines the allocation amount determination condition associated with the communication state data associated with the result of the first determination ( The memory allocation amount is determined in light of the first allocation amount determination condition). In addition, when the wireless state determination unit 51a makes a negative determination that the network wireless communication amount is equal to or less than the wireless communication amount in the first determination, the wireless communication amount is preset to the network wireless communication amount. It further has a threshold value determination function for determining whether or not it is larger than the amount obtained by adding the threshold value (empty threshold value). Here, the determination by the threshold determination function of the wireless status determination unit 51a is set as the second determination. The allocation amount determination unit 51b determines the communication status when the threshold determination function of the wireless status determination unit 51a makes a positive determination that the wireless communication amount is larger than the network wireless communication amount plus the empty threshold. The memory allocation amount is determined in light of the allocation amount determination condition (second allocation amount determination condition) associated with the result of the second determination. On the other hand, if the wireless status determination unit 51a makes a negative determination that the wireless communication amount is equal to or less than the amount obtained by adding the empty threshold to the network wireless communication amount, the allocation amount determination unit 51b Make a decision not to change the quota.

  In this embodiment, the allocation amount determination unit 51b refers to the first and second allocation amount determination conditions stored in the memory unit 20 when determining the memory allocation amount, and determines any of the allocation patterns shown in FIG. One of them is selected. FIG. 4 is a table illustrating an allocation pattern table stored in the storage unit 51c. In the example of FIG. 4, four allocation patterns of a standard pattern, an additional 1 pattern, an additional 2 pattern, and a maximum pattern (hereinafter, abbreviated as standard, additional 1, additional 2, and maximum) are shown, and a memory unit In the storage area allocation field in 20, (1) the basic area used for providing the basic service is set as “basic”, and (2) the wireless area used for the wireless function to retransmit the stored data. “Wireless function” is indicated, and (3) a spare area used for providing the extended service is indicated as “reserved”. Further, the allocation amount column shows the memory allocation amount for each pattern. The memory unit 20 cannot secure the memory beyond the allocated area. That is, even if the receiving unit 10 receives data related to a certain area, the memory unit 20 can store the memory as long as it exceeds the capacity of the area. The unit 20 stops storing data. As shown in FIG. 4, since the memory allocation amount is determined for each allocation pattern in the allocation pattern table, selection of the allocation pattern by the radio status determination unit 51a corresponds to determination of the memory allocation amount.

  Next, based on FIGS. 5 and 6, the first allocation amount determination condition referred to when the allocation amount determination unit 51b determines the memory allocation amount will be described. FIG. 5 shows the specific contents of transition conditions 1 to 3 serving as a reference when selecting the allocation pattern shown in FIG. In FIG. 5, the transition condition 1 includes (1) a connection with the wired terminal 110 and a link speed of 100 M or 10 M, and (2) a further transition condition depending on the traffic to the wired terminal 110. It is subdivided into 1A (0M or more and less than 100M), transition condition 1B (100M or more and less than 200M), and transition condition 1C (200M or more). Each subdivided condition is appropriately used by the allocation amount determination unit 51b. Transition condition 2 is a condition that (1) the connection state of the wired terminal 110 is a state in which there is no connection or a state in which there is a connection and the link speed is 1000 M, and (2) there is use of a priority service. Transition condition 3 is a condition that (1) the connection state of the wired terminal 110 is not connected, or is connected and the link speed is 1000 M, and (2) the wired service is not used.

  FIG. 6 is a table related to the first determination by the wireless status determination unit 51a, and shows an assignment pattern corresponding to each transition condition in a transition destination column. The column of the current pattern in FIG. 6 shows the setting status (allocation pattern) of the memory unit 20 when the allocation amount determination unit 51b determines the memory allocation amount. That is, in the first determination by the wireless status determination unit 51a, the allocation amount determination unit 51b uses the communication status data for each transition condition when a positive determination is made that the network wireless communication amount is greater than the wireless communication amount. One of the transition conditions is specified in light of the contents of and the allocation pattern is selected based on the specified transition condition and the current pattern, and the conditions shown in FIGS. 5 and 6 are the first allocation amount determination conditions. It corresponds to.

  In the present embodiment, when the data relay device 60 is activated, the standard setting command shown in FIG. 4 is notified from the allocation determining unit 51b to the memory setting unit 52, and the memory setting unit 52 According to the setting command notified from 51b, the memory unit 20 is set to a standard setting (basic area 30%, wireless area 10%, spare area 60%).

  When the wireless status determination unit 51a makes a positive first determination, the allocation amount determination unit 51b specifies the transition condition in light of the content of each transition condition, and the current pattern is the same as at startup. If “standard”, as shown in FIG. 6, “addition 1” is specified when transition condition 1 is specified, “addition 2” is specified when transition condition 2 is specified, and transition condition 3 is specified. Select “Maximum” respectively. That is, as in the transition condition 1, when the link speed of the wired terminal 110 is 100M or 10M, especially when the communication amount to the wired terminal 110 is 100M or more, the area of the memory unit 20 is secured to some extent. Therefore, the information control unit 50 executes the memory setting for limiting the transition from the standard to the additional 1, that is, increasing the radio area from 10% to 30%. Here, in the high-speed communication environment as in the case where the link speed of the wired terminal 110 is 1000M (1G), the storage area of the memory unit 20 is not so necessary. It is described in the same row as the state where 110 is not connected. Therefore, when the transition condition 2 is satisfied, it is necessary to secure a storage area to be used for the priority service. Therefore, the information control unit 50 changes the transition from the standard to the additional 2, that is, the radio area from 10% to 50%. The memory setting is executed so that the spare area is secured to 20%. Further, when the transition condition 3 is satisfied, it is not necessary to secure a storage area to be used for the priority service, so the information control unit 50 changes the standard to the maximum, that is, the wireless area from 10% to 70%. The memory setting which does not secure the spare area is executed.

  In the data relay device 60, since the wired space information and the wireless space information are periodically notified from the wired IF management unit 40a and the wireless IF management unit 40b, the data relay device 60 performs periodic determination processing. By setting the memory according to this, not only the transition from the standard but also the transition from addition 1 to addition 2, addition 1 to maximum, and addition 2 to maximum is realized in a timely manner.

  Therefore, as described above, when the wireless status determination unit 51a makes a positive first determination, the allocation amount determination unit 51b determines that the transition condition 1 is “addition 1” if the current pattern is addition 1. ”, When transition condition 2 is specified,“ addition 2 ”is selected, when transition condition 3 is specified,“ maximum ”is selected, and when the current pattern is addition 2, transition condition 1 or 2 is specified. “Addition 2” is selected, and “maximum” is selected when transition condition 3 is specified. If the current pattern is maximum, “addition 2” is specified when transition condition 1 is specified, transition condition 2 or When 3 is specified, “Maximum” is selected.

  Since the first determination is a determination as to whether or not the network wireless communication amount is larger than the wireless communication amount, if the result of the first determination is affirmative, it is necessary to secure a wireless communication area. Thus, in the present embodiment, the allocation amount determination unit 51b is configured to determine the allocation pattern in the direction of increasing the memory allocation amount as described above. Further, in consideration of system stability, a method of maintaining the setting of the memory unit 20 is also adopted. For example, when the transition condition 1 is specified when the current pattern is addition 2, “addition 2” is selected, the wireless area is secured, and the setting of the memory unit 20 is maintained. However, when transition condition 1 is specified when the current pattern is addition 2 or maximum, “addition 1” is selected (in parentheses in the transition destination column), or transition condition 2 is selected when the current pattern is maximum. When specified, a configuration such as selecting “addition 2” may be adopted. Further, as illustrated in the remarks column, the detailed assignment pattern may be set according to the communication amount to the wired terminal using the transition conditions 1A to 1C obtained by subdividing the transition condition 1.

  Next, based on FIGS. 5 and 7, the second allocation amount determination condition referred to when the allocation amount determination unit 51b determines the memory allocation amount will be described. FIG. 7 is a table related to the second determination by the wireless status determination unit 51a, and the assignment pattern corresponding to each transition condition is shown in the transition destination column as in FIG. When the wireless status determination unit 51a makes a positive second determination by the threshold determination function, the allocation amount determination unit 51b specifies any one transition condition in light of the content of each transition condition. The allocation pattern is selected based on the specified transition condition and the current pattern. Since the second determination is a determination as to whether or not the wireless communication amount is larger than the network wireless communication amount plus an empty threshold, if the result of the second determination is affirmative, the wireless communication area is reduced so much. Since it can be said that there is no need to secure the allocation, the allocation determination unit 51b selects an allocation pattern in a direction that generally reduces the memory allocation compared to the case shown in the transition destination column of FIG. .

  According to the example of the first column of the transition destination column in FIG. 7, when the allocation amount determination unit 51b receives the second positive determination by the wireless status determination unit 51a, the communication status data is set to the contents of each transition condition. When the transition condition is specified in light of the current pattern, “standard” is specified when the transition condition 1 is specified, “addition 1” is specified when the transition condition 2 is specified, and the transition condition 3 is specified Select “Addition 2” respectively.

  In the case of the second column of the transition destination column in FIG. 7, in consideration of system stability, the allocation amount determining unit 51b is configured so as not to set (maintain the setting) the memory unit 20 as much as possible. is there. That is, if the current pattern is standard, the allocation amount determination unit 51b selects “standard” when the transition condition 1 or 2 is specified, and selects “addition 1” when the transition condition 3 is specified. If the pattern is addition 1, select "Standard" when transition condition 1 is specified, select "Addition 1" when transition condition 2 or 3 is specified, and if the current pattern is addition 2 or maximum “Standard” is selected when the transition condition 1 is specified, and “Addition 2” is selected when the transition condition 2 or 3 is specified. However, as in the third column of the transition destination column in FIG. 7, the transition patterns 1 to 3 may be selected in association with addition 1, addition 2, and maximum, respectively. Further, as illustrated in the remarks column, the detailed assignment pattern may be set according to the communication amount to the wired terminal using the transition conditions 1A to 1C obtained by subdividing the transition condition 1.

  The configuration of the data relay device 60 as shown in FIG. 1 can also be realized by executing a data relay program read into the auxiliary storage device on a microcomputer or a computer (for example, a personal computer). The data relay program is stored in an information storage medium such as a CD-ROM, or distributed via a network such as the Internet and installed in a computer.

  Next, the operation of the data relay device 60 will be described based on the flowchart of the allocation amount setting process shown in FIG. As described above, when the data relay device 60 is activated, the information control unit 50 sets memory allocation in the standard pattern shown in FIG. 4, and the memory unit 20 sets each allocated area to each function such as a wireless function. To provide. Therefore, here, the memory control from the state in which the memory unit 20 is set to the standard pattern will be described.

  First, the wireless status determination unit 51a of the information management unit 51 acquires communication status data transmitted from the communication management unit 40 (FIG. 8: step S101). Next, the wireless state determination unit 51a uses the network wireless calculation formula based on the wireless space information and the wired communication amount included in the communication state data, to determine the network wireless communication amount (from the service network 100 to the wireless space). (Communication amount) is calculated (FIG. 8: step S102). Next, the wireless status determination unit 51a determines whether or not the calculated network wireless communication amount is larger than the wireless communication amount (FIG. 8: Step S103).

  Here, when the wireless status determination unit 51a determines that the network wireless communication amount is larger than the wireless communication amount (FIG. 8: Step S103 / Yes), the allocation amount determination unit 51b reads the first read from the storage unit 51c. The memory allocation amount of the memory unit 20 is set according to the one allocation amount determination condition and the allocation pattern table. That is, the allocation amount determination unit 51b selects an allocation pattern as shown in FIG. 6 in light of the communication status data in accordance with each transition condition shown in FIG. 5, and notifies the memory setting unit 52 of a setting command based on the selected allocation pattern. (FIG. 8: Step S104). The memory setting unit 52 sets the memory allocation amount for the memory unit 20 in accordance with the setting command from the allocation amount determination unit 51b (FIG. 8: step S105).

  On the other hand, when the wireless status determination unit 51a determines that the network wireless communication amount is equal to or less than the wireless communication amount (FIG. 8: Step S103 / No), the wireless communication amount is more than the sum of the network wireless communication amount and the free threshold. It is determined whether or not there are more (FIG. 8: Step S106). When the wireless status determination unit 51a determines that the wireless communication amount is larger than the sum of the network wireless communication amount and the free threshold (FIG. 8: Yes in step S106), the allocation amount determination unit 51b receives the information from the storage unit 51c. The memory allocation amount of the memory unit 20 is set according to the read second allocation amount determination condition and the allocation pattern table. That is, the allocation amount determination unit 51b selects an allocation pattern as shown in FIG. 7 in light of the communication status data according to each transition condition shown in FIG. 5, and notifies the memory setting unit 52 of a setting command based on the selected allocation pattern. (FIG. 8: Step S107). The memory setting unit 52 sets the allocation amount for the memory unit 20 in accordance with the setting command from the allocation amount determination unit 51b (FIG. 8: Step S108).

  On the other hand, when the wireless status determination unit 51a determines that the wireless communication amount is equal to or less than the sum of the network wireless communication amount and the free threshold, the allocation amount determination unit 51b determines (maintains) that the allocation pattern is not changed. A setting change command to be maintained is notified to the memory setting unit 52 (FIG. 8: step S109). When the setting change command for maintaining the allocation pattern is notified from the allocation amount determination unit 51b, the memory setting unit 52 does not change the setting of the allocation amount of the memory unit 20 (maintains the setting) (FIG. 8: Step S110).

  In the data relay device 60, since the wired space information and the wireless space information are periodically notified from the wired IF management unit 40a and the wireless IF management unit 40b, the information control unit 50 periodically performs the process based on FIG. Perform the action. Note that the allocation setting control of the memory unit 20 by the information control unit 50 may be performed at a preset time interval, or may be performed when a large change in communication status is detected.

(Effect of embodiment)
As described above, the data relay device 60 employs the method of determining the memory allocation amount based on the allocation amount transition condition after performing the determination process using the network wireless communication amount calculated from the network wireless calculation formula. A suitable amount of memory can be allocated to the wireless function. That is, according to the data relay device 60, the flexible memory setting in consideration of the degree of memory pressure prevents the wireless function memory from being exhausted, and the quality of real-time communication such as voice call and video viewing (broadcast viewing) is prevented. Can be held.

  In addition, since the data relay device 60 has a function of performing a setting to reduce the memory allocation amount, the storage area in the memory unit 20 that is no longer necessary for the wireless function can be changed according to the change in the state of the wireless space. Therefore, it is possible to effectively use memory resources. Furthermore, when a service that should be prioritized over wireless communication is in operation, the data relay device 60 performs a setting based on the allocation amount transition condition so that the memory allocation amount to the wireless function is limited to the specified amount. The quality of services that should be prioritized can be guaranteed. As described above, according to the data relay device 60, in a form specialized for the service, the process of selectively discarding only the retained data of limited content, or the memory allocation amount for wireless communication is changed, It is possible to reduce the influence on other services, that is, it is possible to smoothly process relay data stored in the memory and to effectively use memory resources.

  The above-described embodiment is a preferable specific example in the data relay apparatus, method, and program, and may have various technically preferable limitations, but the technical scope of the present invention is particularly limited. As long as there is no description which limits this invention, it is not limited to these aspects.

  For example, in the present embodiment, an example in which IEEE 802.11, which is a wireless LAN standard, is applied to the data relay apparatus 60 has been described. However, even when the wireless relay standard is changed to another retransmission, the data relay apparatus 60 can operate in the same manner as described above. Further, the data relay device 60 can detect that there is a difference between the communication amount from the service network 100 and the communication amount that can be provided by the wireless function in the determination processing by the wireless condition determination unit 51a (wireless difference detection function). ) In addition, the data relay device 60 may be provided with a notification unit that notifies the outside (such as a user) that there is the difference. That is, a configuration may be adopted in which a light emitting member such as an LED is mounted on the data relay device 60 and the light emitting member is turned on when the difference is detected. However, the degree of the difference may be notified to the outside by providing a plurality of LEDs or adopting a light emitting member capable of adjusting the lighting amount. In addition, as a notification method by the notification means, display by characters on the maintenance screen, warning by voice, or the like may be employed. Furthermore, each information acquired by the data relay device 60 may be notified to the server of the service provider, and in this way, it is possible to grasp the state of the wireless space of the user's home.

  In the present embodiment, as shown in FIG. 4, the basic area is set to a constant amount, but the information control unit 50 may perform control to change the basic area according to the communication status. In addition, as a method of determining the memory allocation amount by the allocation amount determination unit 51b, the determination method that combines the three transition conditions that are the two table information illustrated in FIGS. 4 and 5 and the four allocation patterns has been described. The number and contents of conditions and allocation patterns may be arbitrarily changed. However, an allocation pattern table different from that in FIG. 4 and an allocation amount transition condition different from that in FIG. 5 may be adopted. Furthermore, the information control unit 50 may perform control such that the memory allocation amount in the radio area is increased or decreased stepwise (for example, by 20%) in accordance with a certain condition. The storage unit 51c may be provided outside the information control unit 50.

  In addition, the transition condition 1 illustrated in FIG. 5 is further subdivided according to the difference in the link speed of the wired terminal (100M, 10M, or other) and associated with each allocation pattern. The first and second allocation amount determination conditions may be stored in the storage unit 51c, and the allocation amount determination unit 51b may determine the allocation pattern according to this. Of course, FIG. 5 shows an example in which communication amounts 100M and 200M to the wired terminal are adopted as the subdivision boundaries of the transition condition 1, but the communication amounts as the subdivision boundaries are also changed as appropriate. It may be.

  In the present embodiment, since the basic area is set to a constant amount as described above, the allocation amount of the spare area is inevitably determined when the allocation amount of the radio area in the memory unit 20 is determined. Although the allocation amount to the wireless communication in the unit 20 is defined as the memory allocation amount, if the setting for changing the basic area or the setting for further subdividing the storage area is adopted, the allocation to each area of the memory unit 20 is performed. The allocated amount corresponds to the memory allocated amount in the present embodiment.

  DESCRIPTION OF SYMBOLS 10 Receiving part, 20 Memory part (memory | storage part), 30 Transmitting part, 30a Antenna, 40 Communication management part, 40a Wired IF management part, 40b Wireless IF management part, 50 Information control part, 51 Information management part, 51a Wireless status determination Unit, 51b quota determination unit, 51c storage unit, 52 memory setting unit, 60 data relay device, 100 communication network, 110 wired terminal, 120 telephone terminal, 130 communication terminal.

Claims (9)

A receiving unit for receiving data from the outside;
A storage unit for temporarily storing data received by the receiving unit;
A transmission unit for transmitting data temporarily stored in the storage unit;
A communication management unit for transmitting the communication status data indicating the communication status of the receiving unit and the transmitting unit,
Based on the communication status data transmitted from the communication management unit, the determining the quota for the wireless communication between the transmission destination of the data in the storage unit, the storage area in the storage unit, according to the quota an information control section for setting the area for wireless communication with, have a,
The information control unit includes a network wireless communication amount that is an amount of data that the transmission unit transmits by wireless communication among data received by the reception unit from the outside, and a communication state of the transmission unit in the communication state data A data relay device , wherein the allocation amount is determined from a wireless communication amount included in data indicating a communication amount in a wireless space . The receiver is at least connected to a service network;
Before Symbol information control unit,
From the total amount of data that the receiving unit receives from the service network, by subtracting the amount of data indicating the communication status of the reception unit of the communication status data, issues calculate the network radio traffic, the network radio A wireless status determination unit that determines whether the communication amount is greater than the wireless communication amount;
The data relay device according to claim 1, further comprising: an allocation amount determination unit that determines the allocation amount according to a determination result by the wireless status determination unit.   The data relay device according to claim 2, wherein the allocation amount determination unit determines the allocation amount in light of an allocation determination condition associated with the determination result for the communication status data. The information control unit
A plurality of allocation patterns that define the allocation amount, and a determination result and an allocation amount determination condition associated with each allocation pattern,
3. The allocation amount determination unit, when determining the allocation amount, selects any one of the allocation patterns in light of the communication status data according to the allocation amount determination condition. The data relay device described. When the wireless status determination unit determines that the network wireless communication amount is equal to or less than the wireless communication amount, the wireless communication amount is larger than an amount obtained by adding a preset threshold to the network wireless communication amount. A threshold determination function for determining whether or not
5. The data relay device according to claim 2, wherein the allocation amount determination unit refers to a determination result by the threshold determination function when determining the allocation amount. 6.   The allocation amount determination unit determines to maintain the allocation amount when the wireless status determination unit determines that the wireless communication amount is equal to or less than an amount obtained by adding the threshold to the network wireless communication amount. The data relay device according to claim 5. The communication status data includes the priority of each data received by the receiving unit,
The data relay apparatus according to claim 1, wherein the information control unit considers the priority when determining the allocation amount. A receiving step for receiving data from the outside;
A storage step of temporarily storing the data received in the reception step in a storage unit;
A transmission step of transmitting data temporarily stored in the storage unit;
An output step of outputting a communication status data indicating the status of communication in the receiving step and said transmitting step,
A determination step of, based on the communication status data outputted by said output step, to determine a quota for the wireless communication between the transmission destination of data in the storage unit,
The storage area before Symbol in the storage unit, have a, an area setting step of setting a region for wireless communications in accordance with the quota,
In the determining step, a network wireless communication amount that is an amount of data transmitted by wireless communication in the transmitting step among data received from the outside in the receiving step, and a communication status in the transmitting step in the communication status data A data relay method comprising: determining the allocated amount from a wireless communication amount that is included in the data indicating the amount of communication in a wireless space . Receiving means for receiving data from outside,
Storage means for temporarily storing data received by the receiving means in a storage unit;
Transmitting means for transmitting data temporarily stored in the storage unit;
Communication management means for transmitting the communication status data indicating the status of communication by the receiving means and the transmitting means,
Based on the communication status data transmitted by the communication management means, determining means for determining the quota for the wireless communication between the transmission destination of data in the storage unit,
In a storage area of及beauty before Symbol in the storage unit, area setting means for setting a region for wireless communications in accordance with the quota, cause the computer to function as,
The determination means includes a network wireless communication amount that is an amount of data transmitted by the transmission means by wireless communication among data received from the outside by the reception means, and a communication status of the transmission means in the communication status data. A data relay program that determines the allocated amount from a wireless communication amount that is included in the indicated data and indicates a communication amount in a wireless space .

Images