JP4239586B2 - Radio base station apparatus and temperature control method in radio base station apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radio base station apparatus and a temperature control method in the radio base station apparatus, and more particularly to a radio base station apparatus that is directly exposed to the outside air and a temperature control method in the radio base station apparatus.
[0002]
[Prior art]
Conventionally, when a mobile communication radio base station device such as a mobile phone is installed outdoors that is directly exposed to the outside air, the temperature inside the radio base station device greatly fluctuates due to a change in the outside air temperature. The temperature inside the device may be outside the allowable operating temperature range. For this reason, the radio base station apparatus is equipped with air conditioning equipment to adjust the internal temperature to a constant level, or the temperature inside the radio base station apparatus is measured, and the degree of decrease in the operating rate of the radio base station apparatus according to the measurement result Is adjusted so that the temperature inside the radio base station apparatus does not fall outside the allowable operating temperature range (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP-A-5-308418 (paragraph "0002", claim 2)
[0004]
[Problems to be solved by the invention]
The above-described conventional radio base station apparatus is equipped with air conditioning equipment to adjust the internal temperature to a constant level, or measures the temperature inside the radio base station apparatus and reduces the operating rate of the radio base station apparatus according to the measurement result. By adjusting the degree, the temperature inside the radio base station apparatus is prevented from being outside the allowable operating temperature range. For this reason, in order to control the temperature inside the radio base station apparatus, air conditioning equipment is required, means for measuring the temperature inside the radio base station apparatus, means for processing the measurement results obtained by this means, etc. are necessary. There is a problem of becoming.
[0005]
An object of the present invention is to eliminate such conventional drawbacks, and when controlling the temperature inside the radio base station apparatus, air conditioning equipment is not necessary, and means for measuring temperature and measurement results obtained by this means are used. An object of the present invention is to provide a radio base station apparatus and a temperature control method in the radio base station apparatus that do not require processing means.
[0006]
[Means for Solving the Problems]
A radio base station apparatus of the present invention is a radio base station apparatus that performs output and input of radio signals and controls mobile communication,
Storage means for storing the average temperature of each past time as change information of the outside air temperature at the installation location of the own radio base station device;
Heat generation processing determination means for determining the necessity of heat generation suppression processing or heat generation promotion processing based on the outside air temperature change information stored in the storage means;
Temperature control means for performing the heat generation suppression process or the heat generation promotion process based on the determination result by the heat generation process determination means;
The temperature control means sequentially performs a plurality of prioritized controls in a circuit in the device for controlling the mobile communication as the heat generation suppression process or the heat generation promotion process. Yes.
[0007]
Further, the heat generation processing determining means of the radio base station apparatus of the present invention is configured so that, based on the outside air temperature change information, the operating temperature of the own radio base station apparatus is within a predetermined time when the outside air temperature of the own radio base station apparatus is predetermined. When the external temperature upper limit value derived from the upper limit value is expected to be exceeded, it is determined that the heat generation suppression process is necessary.
[0008]
Further, the heat generation processing determining means of the radio base station apparatus according to the present invention is configured so that the operating temperature of the own radio base station apparatus falls within a predetermined time based on the outside air temperature change information. When it is predicted that the external temperature lower limit value derived from the lower limit value is below the lower limit value, it is determined that the heat generation promotion process is necessary.
[0010]
The temperature control method in the radio base station apparatus of the present invention is a temperature control method in a radio base station apparatus that controls the mobile communication by outputting and inputting radio signals,
Store the average temperature of each past time as change information of the outside air temperature at the location where the radio base station device is installed,
Based on the stored outside air temperature change information, the necessity of heat generation suppression processing or heat generation promotion processing is determined,
Based on the determination result, as the heat generation suppression process or the heat generation promotion process , a plurality of prioritized controls are sequentially performed in a circuit in the apparatus for controlling the mobile communication .
[0011]
Further, the temperature control method in the radio base station apparatus of the present invention is based on the outside air temperature change information, and the operating temperature upper limit value of the own radio base station apparatus within a predetermined time of the outside temperature of the own radio base station apparatus. When it is expected that the upper limit of the external temperature that has been derived will be exceeded, it is determined that the heat generation suppression process is necessary.
[0012]
Further, the temperature control method in the radio base station apparatus of the present invention is based on the outside air temperature change information, and the operating temperature lower limit value of the own radio base station apparatus within a predetermined time when the outside air temperature of the own radio base station apparatus is predetermined. When it is predicted that the temperature is lower than the lower external temperature lower limit value, it is determined that the heat generation promotion process is necessary.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0014]
FIG. 1 is a block diagram showing a radio base station including an embodiment of a radio base station apparatus of the present invention.
[0015]
In FIG. 1, the radio base station includes a radio base station device 1, a first antenna 2, and a second antenna 3.
[0016]
The radio base station device 1 includes a device control unit 4 that controls each circuit in the device,
A storage unit 5 for storing change information of the outside air temperature at the installation location of the radio base station apparatus 1;
A radio signal control unit 6 that controls radio signals for both input and output; a radio output control unit 7 that includes an amplifier circuit for a radio signal to be output; a radio input control unit 8 that controls an input radio signal; The wireless output control unit 7 and a wireless input / output control unit 9 that controls input / output by synthesizing / separating signals from the wireless input control unit 8 include two systems of a first antenna 2 and a second antenna 3. With respect to the same radio signal received in step 1, a diversity function that preferentially uses a signal from an antenna having excellent radio wave conditions.
[0017]
The device control unit 4 outputs a control signal for controlling the radio signal control unit 6, the radio output control unit 7, and the radio input control unit 8 to perform communication control, and controls the outside air temperature stored in the storage unit 5. It is determined whether it is necessary to perform heat generation suppression processing or heat generation promotion processing with reference to the change information, and when there is a need, the wireless signal control unit 6, the wireless output control unit 7, and the wireless input control unit 8 The control signal is output to the heat generation suppression process or the heat generation promotion process.
[0018]
The radio signal control unit 6 converts transmission data into a radio signal based on a control signal from the device control unit 4 and outputs the radio signal to the radio output control unit 7 and receives a signal from the radio input control unit 8. Convert to received data.
[0019]
The radio output control unit 7 converts the radio signal from the radio signal control unit 6 into an output radio wave based on the control signal from the device control unit 4 and outputs the output radio wave to the radio input / output control unit 9. The wireless output control unit 7 has a transmission diversity function, and can output two systems.
[0020]
Based on the control signal from the device control unit 4, the wireless input control unit 8 converts the input radio wave from the wireless input / output control unit 9 into a radio signal and outputs the radio signal to the radio signal control unit 6. The wireless input control unit 8 has a reception diversity function and can receive two systems of inputs.
[0021]
The wireless input / output control unit 9 synthesizes / separates the output radio wave from the radio output control unit 7 and the input radio wave from the first antenna 2 and the second antenna 3 to obtain the first antenna 2 and the second antenna. 3 and the output to the wireless input control unit 8 are separated.
[0022]
Next, the operation of the radio base station apparatus according to the present embodiment will be described in detail with reference to FIG. 2 and FIG.
[0023]
FIG. 2 is a flowchart showing an example of the operation of the embodiment of the present invention.
[0024]
FIG. 3 is a diagram illustrating an example of heat generation suppression processing items and heat generation promotion processing items executed by the apparatus control unit illustrated in FIG. 1.
[0025]
In FIG. 1, the storage unit 5 stores in advance the past temperature, for example, every 10 minutes of the installation location of the radio base station apparatus 1, for example, for one year as outside air temperature change information. This stored content may be the temperature every 5 minutes for one year. Further, the temperature at each time may be an average of the temperatures at each time for the past decade, and these values may be arbitrarily determined according to the situation of the installation location.
[0026]
In step 1 of FIG. 2, the device control unit 4 determines that the outside air temperature of the radio base station device 1 is within a predetermined time (for example, one hour) based on the outside air temperature change information stored in the storage unit 5. (Not limited to this value, it may be arbitrarily determined depending on the situation of the installation location) whether the external temperature upper limit value derived from the operating temperature upper limit value of the radio base station apparatus 1 is exceeded, or the radio base station It is predicted whether or not the external temperature lower limit value derived from the operating temperature lower limit value of the station apparatus 1 is below, that is, the apparatus control unit 4 determines the current time of the day from the outside temperature change information stored in the storage unit 5. The air temperature at a time obtained by adding a predetermined time (for example, one hour) to is taken out, and it is predicted whether the air temperature exceeds the external temperature upper limit value or falls below the external temperature lower limit value. Is a predetermined period (for example, 30 minutes) Performed. This cycle may arbitrarily determined by the situation of the installation site.
[0027]
Here, the operating temperature upper limit value / operating temperature lower limit value is an upper limit value / lower limit value of the internal temperature of the radio base station apparatus 1 at which the radio base station apparatus 1 can operate, and is determined in advance. The external temperature upper limit value / external temperature lower limit value is a temperature set in advance based on the operating temperature upper limit value / operating temperature lower limit value, and is approximately 10-20 ° C. lower / higher than the operating temperature upper limit value / operating temperature lower limit value. Set to temperature (not limited to this value, but may be determined arbitrarily depending on the situation of the installation location).
[0028]
In step 2 of FIG. 2, when the result predicted in step 1 indicates that the external temperature upper limit value is exceeded or falls below the external temperature lower limit value, the process continues to step 4 and the result predicted in step 1 is the external temperature upper limit value. When the value is exceeded or does not indicate that the external temperature lower limit is not reached, continue to step 3.
[0029]
In step 3 of FIG. 2, when the heat generation suppression process or the heat generation promotion process is performed, the heat generation suppression process or the heat generation promotion process being performed is canceled and the process returns to step 1.
[0030]
In step 4 of FIG. 2, when the result predicted in step 1 indicates that the external temperature upper limit value is exceeded, the process continues to step 5, and when the result predicted in step 1 indicates that the external temperature lower limit value is not reached, Continue to step 6.
[0031]
In step 5 of FIG. 2, heat generation suppression processing is performed, and the process returns to step 1. This heat generation suppression process is a process of stopping the circuit in the radio base station apparatus 1 as much as possible and suppressing internal heat generation. Specifically, as shown in FIG. There are transmission output suppression control and usable area reduction control. Diversity function OFF control makes it possible to reduce the temperature rise by reducing the number of circuits in the two systems to one system, and the amplifier circuit by suppressing the transmission output by the wireless output control unit 7 by controlling the transmission output It is possible to suppress the temperature rise of the amplifier circuit by suppressing the transmission output of the common channel by the reduction control of the usable area.
[0032]
As shown in FIG. 3, each control of the heat generation suppression process is given a priority, and is sequentially performed from the control with the highest priority. That is, in the example shown in FIG. 3, when this step 5 is reached, first, the diversity function OFF control is performed. Even if the diversity function OFF control is performed, if this step 5 is reached, transmission output suppression control is performed. Further, even if the diversity function OFF control and the transmission output suppression control are performed, if this step 5 is reached, the usable area reduction control is performed. Thereby, the heat generation suppressing process can be performed without impairing the function of the radio base station apparatus 1 as much as possible.
[0033]
In step 6 of FIG. 2, heat generation promotion processing is performed, and the process returns to step 1. This heat generation promotion process is a process for operating the circuit in the radio base station apparatus 1 as much as possible to promote internal heat generation. Specifically, as shown in FIG. 3, the diversity function is turned on. There are control, transmission output promotion control, usable area expansion control, and pseudo call setting control. Even if the diversity function is not operating because it is not required due to the ON control of the diversity function, it is possible to activate the diversity function and promote internal heat generation. Even when the transmission output by the unit 7 is reduced, it is possible to increase the transmission output and promote heat generation from the amplifier circuit. By expanding the usable area, the transmission output of the common channel is increased to generate heat from the amplifier circuit. By controlling the setting of the pseudo call, even if there is no actual subscriber, it is possible to operate the internal circuit by facilitating a call and promote internal heat generation. .
[0034]
As shown in FIG. 3, priority is given to each control of the heat generation promotion processing, and the control is sequentially performed from the control with the highest priority. That is, in the example shown in FIG. 3, when this step 6 is reached, first, the diversity function ON control is performed. Even if the diversity function ON control is performed, if this step 6 is reached, the transmission output promotion control is performed. Further, even if the diversity function ON control and the transmission output promotion control are performed, if this step 6 is reached, enlargement control of the usable area is performed. Further, even if the diversity function ON control, the transmission output promotion control, and the usable area expansion control are performed, the process proceeds to step 6 and pseudo call setting control is performed. Thereby, heat generation promotion processing can be performed without spending useless energy.
[0035]
【The invention's effect】
As described above, according to the present invention, the storage unit stores the change information of the outside air temperature at the installation location of the radio base station device, and the device control unit stores the outside temperature change information stored in the storage unit. The necessity of heat generation suppression processing or heat generation promotion processing is determined based on the above, and the heat generation suppression processing or the heat generation promotion processing is performed based on the determination result. The temperature in the radio base station apparatus can be controlled without using the air conditioning equipment, the means for measuring the temperature, and the means for processing the measurement result obtained by this means.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a radio base station including an embodiment of a radio base station apparatus of the present invention.
FIG. 2 is a flowchart showing an example of an operation according to the embodiment of the present invention.
FIG. 3 is a diagram illustrating an example of heat generation suppression processing items and heat generation promotion processing items executed by the apparatus control unit shown in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Radio base station apparatus 2 1st antenna 3 2nd antenna 4 Device control part 5 Memory | storage part 6 Wireless signal control part 7 Wireless output control part 8 Wireless input control part 9 Wireless input / output control part

Claims (6)

A radio base station apparatus that outputs and inputs radio signals and controls mobile communication,
Storage means for storing the average temperature of each past time as change information of the outside air temperature at the installation location of the own radio base station device;
A heat generation process determination means for determining the necessity of the heat generation suppression process or the heat generation promotion process based on the outside air temperature change information stored in the storage means;
Temperature control means for performing the heat generation suppression process or the heat generation promotion process based on the determination result by the heat generation process determination means,
The temperature control means sequentially performs a plurality of prioritized controls in a circuit in the apparatus for controlling the mobile communication as the heat generation suppression process or the heat generation promotion process. Station equipment. The heat generation processing determining means, based on the outside air temperature change information, the external temperature upper limit value derived from the operating temperature upper limit value of the own radio base station device within a predetermined time of the outside temperature of the own radio base station device. The radio base station apparatus according to claim 1, wherein it is determined that the heat generation suppression process is necessary when it is expected to exceed. The heat generation processing determining means, based on the outside air temperature change information, the external temperature lower limit value derived from the operating temperature lower limit value of the own radio base station device within a predetermined time of the outside temperature of the own radio base station device. 3. The radio base station apparatus according to claim 1, wherein when it is expected to be lower, it is determined that the heat generation promotion process is necessary. 4. A temperature control method in a radio base station apparatus for controlling mobile communication by outputting and inputting radio signals,
Store the average temperature of each past time as change information of the outside air temperature at the location where the radio base station device is installed,
Based on the stored outside air temperature change information, the necessity of heat generation suppression processing or heat generation promotion processing is determined,
Based on the determination result, as the heat generation suppression process or the heat generation promotion process , a plurality of prioritized controls are sequentially performed in the circuit in the device for controlling the mobile communication. Temperature control method in a radio base station apparatus. Based on the outside air temperature change information, when the external temperature of the own radio base station apparatus is expected to exceed the upper limit of the external temperature derived from the upper limit of the operating temperature of the own radio base station apparatus within a predetermined time. 5. The temperature control method in a radio base station apparatus according to claim 4 , wherein it is determined that the heat generation suppression process is necessary. Based on the outside air temperature change information, when the external temperature of the own radio base station apparatus is expected to fall below the lower limit of the external temperature derived from the lower limit operating temperature of the own radio base station apparatus within a predetermined time. 6. The temperature control method for a radio base station apparatus according to claim 4 , wherein the heat generation promotion process is determined to be necessary.

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