JP2020088622A - Communication apparatus, method, and program - Google Patents

Abstract

To provide a communication apparatus, a method, and a program that control the communication apparatus according to the state of weather to prevent an increase in power consumption caused by bad weather.SOLUTION: A communication apparatus 100 comprises: a communication unit 120 that performs radio communication with base stations; and a control unit 130 that causes the state of the communication unit to transition between a power-saving state in which the communication unit does not perform radio communication and a communication state in which the communication unit can perform radio communication. The control unit acquires weather related information on the state of weather around the communication apparatus and controls a transition timing from the power-saving state to the communication state based on the weather related information.SELECTED DRAWING: Figure 2

Description

The present invention relates to a communication device, a method, and a program.

In Patent Document 1, the rainfall attenuation amount of radio waves is estimated based on the output of the rainfall sensor, the GPS error, or the rainfall information of the local meteorological observation system of the Meteorological Agency, and the transmission power is determined according to the estimated rainfall attenuation amount. The base stations that do this are listed.

The base station notifies the determined transmission power to the communication device (terminal device). As a result, the base station and the communication device increase the transmission power during the rainfall phenomenon and restore the transmission power when the rainfall phenomenon disappears.

JP, 10-65596, A

By the way, in recent years, with the development of IoT (Internet of Things) technology, an LPWA (Low Power Wide Area) communication method that realizes long-distance wireless communication with low power consumption is drawing attention.

A communication device using the LPWA communication system is basically in a power saving state in which wireless communication is not performed, and transitions from the power saving state to the communication state and performs wireless communication only when performing wireless communication with a base station. In the power saving state, power supply to the communication unit that performs wireless communication can be stopped, so that the battery drive time of the communication device can be extended.

However, when the weather condition around the communication device is bad at the time of transition from the power saving state to the communication state, it may be necessary to increase the transmission power of the communication device as described in Patent Document 1. Therefore, there is a problem that the power consumption of the communication device increases as the transmission power of the communication device increases.

Therefore, it is an object of the present invention to provide a communication device, method, and program capable of suppressing an increase in power consumption due to bad weather.

A communication device according to a first aspect sets a state of the communication unit between a communication unit that performs wireless communication with a base station and a power saving state in which the wireless communication is not performed and a communication state in which the wireless communication is possible. And a control unit for making a transition. The control unit acquires weather-related information regarding a weather condition around the communication device, and controls a transition timing from the power saving state to the communication state based on the weather-related information.

The method according to the second aspect is a method for controlling a communication device including a communication unit that performs wireless communication with a base station. The method obtains weather-related information about a weather condition around the communication device, and based on the weather-related information, changes from a power saving state in which the wireless communication is not performed to a communication state in which the wireless communication is possible. Controlling the transition timing of the above.

A program according to a third aspect, on the basis of a step of acquiring, in a communication device having a communication unit that performs wireless communication with a base station, weather-related information regarding a weather condition around the communication device, and the weather-related information. Controlling the transition timing from the power saving state in which the wireless communication is not performed to the communication state in which the wireless communication is possible.

According to one aspect of the present invention, it is possible to provide a communication device, method, and program capable of suppressing an increase in power consumption due to bad weather.

It is a figure which shows the structure of the communication system which concerns on one Embodiment. It is a figure which shows the structure of the communication apparatus which concerns on one Embodiment. It is a figure for explaining a power-saving state concerning one embodiment. It is a figure which shows operation|movement of the communication apparatus which concerns on one Embodiment. It is a figure which shows an example of the operation flow of the communication apparatus which concerns on one Embodiment. It is a figure which shows the other example of the operation flow of the communication apparatus which concerns on one Embodiment.

Embodiments will be described with reference to the drawings. In the description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.

(Example of system configuration)
FIG. 1 is a diagram showing a configuration of a communication system 1 according to an embodiment.

As shown in FIG. 1, the communication system 1 includes a communication device 100, a communication network 200, and a server 300.

The communication device 100 is, for example, a sensor device having various sensors, and has a communication function of performing communication via the communication network 200. For example, the communication device 100 transmits the measurement information obtained by various sensors to the server 300 via the communication network 200.

The communication device 100 performs LPWA (Low Power Wide Area) wireless communication with the communication network 200. The LPWA system is a system for realizing long-distance wireless communication while suppressing power consumption.

The LPWA system is, for example, cellular LPWA, SIGFOX, or LoRaWAN. Cellular LPWA ^may be 3GPP (3 rd Generation Partnership Project) eMTC specified in Standard (enhanced Machine Type Communications) or NB-IoT (Narrow Band-Internet of Things). In the following, it is mainly assumed that cellular LPWA is used as the LPWA system.

The communication network 200 is a network provided by a communication carrier. The communication network 200 includes a base station 210 that performs wireless communication with the communication device 100, and a management device 220 that manages the communication device 100. Although only one base station 210 included in the communication network 200 is illustrated in FIG. 1, it is assumed that the communication network 200 includes a plurality of base stations 210.

The base station 210 may be an eNB (evolved Node B) that is a base station of LTE (Long Term Evolution) defined in the 3GPP standard. The management device 220 may be an MME (Mobility Management Entity) defined in the 3GPP standard.

The management device 220 manages in which tracking area the communication device 100 is located. When data addressed to the communication device 100 is generated, the management device 220 transmits a paging message for calling the communication device 100 to the communication device 100 via the base station 210 that manages the tracking area in which the communication device 100 is located. To do.

The communication device 100 is, for example, a sensor device installed outdoors or indoors. When the communication device 100 is installed outdoors, the communication device 100 is driven by a battery provided in its own device. When the communication device 100 is installed indoors, the communication device 100 may be driven by electric power supplied from a battery provided in the device itself or by electric power supplied from a commercial power supply (AC power supply). Good.

The communication device 100 using the LPWA communication method is basically in a power saving state in which wireless communication is not performed, and transitions from the power saving state to the communication state only when performing wireless communication with the base station 210 to perform wireless communication. To do. In the power saving state, since the power supply to the communication unit 120 (see FIG. 2) that performs wireless communication can be stopped, the battery drive time of the communication device 100 can be extended.

The server 300 is a device connected to the communication network 200. The server 300 may be connected to the communication network 200 via the Internet. The server 300 collects and stores various information from the communication device 100 by communicating with the communication device 100 via the communication network 200.

The communication device 100 transitions from the power saving state to the communication state, and transmits (uploads) various information to the server 300 in the communication state. Here, when the power saving state transits to the communication state, the weather condition around the communication device 100 may be bad. The bad weather condition means that a radio signal (radio wave) is greatly attenuated, for example, that a rain phenomenon or a snow phenomenon occurs.

Therefore, when the weather condition around the communication device 100 is bad when the power saving state is transited to the communication state, it is necessary to take measures such as increasing the transmission power of the communication device 100. Electric power increases.

In one embodiment, the communication device 100 acquires weather-related information regarding a weather condition around the communication device 100, and controls a transition timing from the power saving state to the communication state based on the acquired weather-related information.

As a result, the communication device 100 can avoid the transition from the power saving state to the communication state when the weather condition around the communication device 100 is bad, and thus the increase in power consumption of the communication device 100 due to bad weather can be suppressed. ..

(Example of communication equipment configuration)
FIG. 2 is a diagram showing a configuration of the communication device 100 according to the embodiment.

As illustrated in FIG. 2, the communication device 100 includes a communication unit 120, a control unit 130, a storage unit 140, a power management unit 150, a GNSS receiver 160, and various sensors 170.

The communication unit 120 performs wireless communication with the base station 210 and communication with the server 300 via the communication network 200. Communication unit 120 includes antenna 110 and LPWA communication unit 121.

The antenna 110 is used for transmitting and receiving radio signals. The LPWA communication unit 121 performs LPWA communication with the base station 210 included in the communication network 200.

The LPWA communication unit 121 includes a receiver 121 a that performs amplification processing, filtering processing, and the like on the radio signal received by the antenna 110 from the base station 210, converts the radio signal into a baseband signal, and outputs the baseband signal to the control unit 130. .. The LPWA communication unit 121 also includes a transmitter 121b that converts the baseband signal input from the control unit 130 into a wireless signal, performs amplification processing, and transmits the wireless signal from the antenna 110.

The control unit 130 performs various types of processing and control in the communication device 100. For example, the control unit 130 controls the GNSS receiver 160 and/or various sensors 170 so as to acquire position information and/or measurement information, and transmits (uploads) the acquired position information and/or measurement information to the server 300. The communication unit 120 may be controlled so as to). The control unit 130 includes at least one processor. The processor may include a baseband processor and a CPU (Central Processing Unit). The baseband processor performs modulation/demodulation and coding/decoding of baseband signals. The CPU executes the programs stored in the storage unit 140 to perform various processes.

The control unit 130 also transitions the state of the communication unit 120 between a power saving state in which wireless communication is not performed and a communication state in which wireless communication is possible. The details of such operation will be described later.

The storage unit 140 includes a volatile memory and a non-volatile memory. The storage unit 140 stores a program executed by the control unit 130 and information used for processing by the control unit 130. The storage unit 140 may store setting information for setting the function and operation of the communication device 100.

For example, the setting information may include information for setting the transmission condition of the measurement information obtained by the various sensors 170. This information may be information that sets the time or period at which the measurement information obtained by the various sensors 170 should be uploaded to the server 300, or sets a threshold value as a condition for uploading specific measurement information to the server 300. It may be information to be provided. The control unit 130 uploads the measurement information obtained by the various sensors 170 via the communication unit 120 at a timing determined according to the setting information.

The storage unit 140 also stores the address (for example, IP address) of the server 300 so that the communication device 100 can access the server 300.

The power management unit 150 includes a battery and its peripheral circuits. The power management unit 150 supplies drive power for the communication device 100. The battery may be a disposable type that can be attached to and detached from the communication device 100, or may be a rechargeable storage battery (secondary battery). When the communication device 100 receives power from the outside, the power management unit 150 may be configured by a circuit that converts the power supplied from the outside.

The GNSS receiver 160 acquires position information indicating the position of the communication device 100. The GNSS receiver is a GPS (Global Positioning System) receiver, a GLONASS (Global Navigation Satellite System) receiver, an IRNSS (Indian Legal Assistance QZSS, CO SatelliteSS, COSSS receiver, COG receiver). ) A receiver or the like may be included. The GNSS receiver 160 acquires position information (latitude/longitude information) under the control of the control unit 130, and outputs the acquired position information to the control unit 130.

The various sensors 170 include at least one of a temperature sensor, a humidity sensor, an atmospheric pressure sensor, a magnetic field sensor (geomagnetic sensor), an illuminance sensor, an acceleration sensor, and a proximity sensor. The various sensors 170 may include at least one of a rainfall sensor and a snowfall sensor. The rainfall sensor and the snowfall sensor are sensors related to the weather, and the rainfall sensor and the snowfall sensor are called weather-related sensors. The various sensors 170 perform measurement under the control of the control unit 130 and output the measurement information obtained by the measurement to the control unit 130.

(Example of power saving state)
FIG. 3 is a diagram for explaining a power saving state according to an embodiment. In one embodiment, the power saving state includes a PSM (Power Saving Mode) state defined in the 3GPP standard.

As illustrated in FIG. 3, in step S11, the communication device 100 in the RRC (Radio Resource Control) connected state transmits an attach request message or a tracking area update (TAU: Tracking Area Update) request message to the management apparatus 300. The RRC connected state refers to a state in which the communication device 100 performs wireless communication. The RRC connection state is an example of a communication state.

The attach request message is a message requesting attachment (connection) of the communication device 100 to the communication network 200. The TAU request message is a message that requests the management device 300 to update the tracking area in which the communication device 100 is located.

When the communication device 100 requests the transition to the PSM state, the communication device 100 includes the request value of the first timer and the request value of the second timer in the attach request message or the TAU request message.

The first timer is a timer that determines the time until the communication device 100 transitions from the RRC connected state to the RRC idle state and then transitions to the PSM state. The RRC idle state is a state in which the communication device 100 monitors a call (paging message) of the communication device 100 without performing wireless communication. The RRC idle state is an example of the power saving state.

In the RRC idle state, the receiver 121a of the communication device 100 may be intermittently turned on, and the power supply to the transmitter 121b of the communication device 100 can be stopped, so that the power consumption of the communication device 100 is reduced.

The second timer is a timer that determines the time from when the communication device 100 transits from the RRC idle state to the PSM state until the next TAU request message is transmitted. The PSM state is a state in which the communication device 100 does not perform wireless communication and does not monitor a paging message. The PSM state is an example of a power saving state.

In the PSM state, not only the power supply to the transmitter 121b of the communication device 100 can be stopped but also the power supply to the receiver 121a of the communication device 100 can be stopped. It will be further reduced. From the viewpoint of wireless communication, the PSM state is equal to the state where the communication device 100 is not powered on (that is, the power off state).

However, in the power saving state (RRC idle state, PSM state), when data to be transmitted from the communication device 100 to the communication network 200 occurs, the communication device 100 performs a procedure for starting wireless communication. By performing a certain random access procedure, it is possible to transit from the power saving state to the communication state (RRC connection state).

In step S12, the management device 300 transmits to the communication device 100 an attach acceptance message corresponding to the attach request message from the communication device 100 or a TAU acceptance message corresponding to the TAU request message.

The attach acceptance message or the TAU acceptance message includes the setting value of the first timer and the setting value of the second timer. Specifically, the management device 300 determines the setting value of the first timer according to the request value of the first timer from the communication device 100, and determines the second setting value according to the request value of the second timer from the communication device 100. The setting value of the timer is determined, and the determined setting value of the first timer and the determined setting value of the second timer are included in the attach acceptance message or the TAU acceptance message.

In step S13, the communication device 100 transitions from the RRC connected state to the RRC idle state. Upon transitioning to the RRC idle state, the communication device 100 starts the first timer set by the management device 300.

In step S14, the communication device 100 transitions from the RRC idle state to the PSM state in response to the expiration of the first timer. Upon transitioning to the PSM state, the communication device 100 starts the second timer set by the management device 300.

In step S15, the communication device 100 transitions from the PSM state to the RRC connected state in response to the expiration of the second timer.

In step S16, when the communication device 100 transitions to the RRC connected state, the communication device 100 transmits a TAU request message to the management device 300. This TAU request message has a role of notifying the management device 300 that the communication device 100 has recovered from the PSM state to the communication state.

(Example of operation of communication device)
FIG. 4 is a diagram showing an operation of the communication device 100 according to the embodiment.

As illustrated in FIG. 4, at time t1, the control unit 130 causes the state of the communication unit 120 to transition from the communication state (for example, RRC connection state) to the power saving state (for example, RRC idle state or PSM state).

The time from time t2 to time t3 is bad weather time when the weather condition around the communication device 100 is bad. For example, it is assumed that a rainfall phenomenon or a snowfall phenomenon has occurred during the period from time t2 to time t3.

At time t3 belonging to the bad weather time, the control unit 130 determines that it is necessary to start wireless communication. For example, based on the setting information stored in the storage unit 140, the control unit 130 has reached the time when the measurement information should be uploaded to the server 300, or the threshold for uploading the measurement information to the server 300 has been satisfied. Detect that.

In such a situation, the control unit 130 identifies the bad weather time based on the weather-related information and prevents the communication unit 120 from transitioning from the power saving state to the communication state in the specified bad weather time. Controls the timing of transition from to communication state.

Specifically, when the communication unit 120 is in the power saving state, the control unit 130 starts the wireless communication when the timing at which the wireless communication needs to be started (that is, time t3) overlaps with the bad weather time. Is suspended, and the communication unit 120 is transited to the communication state after the bad weather time has passed (that is, time t5). As a result, it is possible to suppress an increase in power consumption of the communication device 100 due to bad weather.

Here, as a method of identifying the bad weather time based on the weather-related information, any one of the following first to third methods or a combination of two or more methods can be used.

The first method is a method of identifying bad weather time by using the weather prediction information acquired from the server 300 as weather related information. The weather forecast information is information in which future weather conditions in an area including the position of the communication device 100 are forecast for each time zone. The server 300 provides weather forecast information to the communication device 100 by using, for example, a weather forecast service.

In the first method, the control unit 130 acquires the weather forecast information from the server 300 via the communication unit 120 when the communication unit 120 is in the communication state, and stores the obtained weather forecast information in the storage unit 140. Let

Then, when it is necessary to start wireless communication with the base station 210, the control unit 130 extracts the weather condition corresponding to the time zone to which the current time belongs from the weather prediction information stored in the storage unit 140. Then, it is confirmed whether the weather condition of the time zone to which the current time belongs is bad weather condition.

The second method is a method of identifying a bad weather time by utilizing the property that a GNSS error occurs during bad weather and using the GNSS error as weather related information.

Specifically, storage unit 140 stores in advance first information indicating the position of communication device 100. For example, the control unit 130 stores the position information acquired by the GNSS receiver 160 when the weather is not bad in the storage unit 140 in advance as correct answer data.

Then, when the communication unit 120 is in the power saving state, the control unit 130 sets the current second position information obtained using the GNSS receiver 160 and the first position information stored in the storage unit 140. The error information (GNSS error) indicating the difference between them is acquired as weather related information. For example, when the GNSS error is equal to or more than the threshold value, the control unit 130 determines that the area around the communication device 100 has bad weather.

The third method is a method of identifying the bad weather time by using the output of a weather related sensor (rainfall sensor, snowfall sensor) as weather related information when the communication device 100 is installed outdoors. When the communication unit 120 is in the power saving state, the control unit 130 acquires the output of the weather related sensor as the weather related information and determines whether or not the surroundings of the communication device 100 have bad weather.

(Example of operation flow of communication device)
FIG. 5 is a diagram showing an example of an operation flow of the communication device 100 according to the embodiment.

As shown in FIG. 5, in step S101, the control unit 130 acquires the weather forecast information from the server 300 via the communication unit 120 when the communication unit 120 is in the communication state.

In step S102, the control unit 130 causes the storage unit 140 to store the weather forecast information acquired from the server 300.

In step S103, the control unit 130 shifts the state of the communication unit 120 from the communication state to the power saving state.

In step S104, the control unit 130 determines whether it is necessary to start wireless communication.

When it is determined that the wireless communication needs to be started (step S104: YES), the control unit 130 acquires the GNSS error and/or the weather-related sensor output in step S105.

In step S106, the control unit 130 determines whether the current timing overlaps with the bad weather time based on the weather prediction information stored in the storage unit 140 and the GNSS error and/or weather-related sensor output acquired in step S105. Determine whether or not. For example, when the weather prediction information indicates that the current timing is bad weather time and the GNSS error and/or the weather related sensor output indicates that the current timing is bad weather time, the control unit 130 indicates that the current timing is bad weather. It is determined that it overlaps with time. When it is determined that the current timing does not overlap with the bad weather time (step S106: NO), the process proceeds to step S110.

On the other hand, when it is determined that the current timing overlaps with the bad weather time (step S106: YES), the control unit 130 suspends the start of wireless communication in step S107.

In step S108, the control unit 130 acquires the GNSS error and/or weather-related sensor output.

In step S109, the control unit 130 determines whether the bad weather time has elapsed based on the weather prediction information stored in the storage unit 140 and the GNSS error and/or weather-related sensor output acquired in step S108. judge. For example, when the weather prediction information indicates that the current timing is not the bad weather time and the GNSS error and/or the weather related sensor output indicates that the current timing is not the bad weather time, the control unit 130 determines that the bad weather time has elapsed. judge.

When it is determined that the bad weather time has not elapsed (step S109: NO), the process returns to step S108. On the other hand, when it is determined that the bad weather time has elapsed (step S109: YES), the process proceeds to step S110.

In step S110, the control unit 130 starts wireless communication with the base station 210 by causing the communication unit 120 to transition from the power saving state to the communication state. For example, the control unit 130 controls the communication unit 120 to transmit the measurement information to the server 300 in the communication state.

(Other example of operation flow of communication device)
As described above, the communication device 100 in the PSM state needs to transit to the communication state and transmit the TAU request message to the management device 300 when the second timer expires.

Since the value of the second timer can be requested from the communication device 100 to the management device 300, the timing at which the second timer expires (that is, communication The timing of transition to the state) can be prevented from overlapping with bad weather time.

FIG. 6 is a diagram showing another example of the operation flow of the communication device 100 according to the embodiment.

As shown in FIG. 6, in step S201, the control unit 130 acquires the weather forecast information from the server 300 via the communication unit 120 when the communication unit 120 is in the communication state.

In step S202, the control unit 130 identifies future bad weather time based on the weather prediction information acquired from the server 300.

In step S203, the control unit 130 causes the communication unit 120 to continue the power saving state based on the bad weather time specified in step S202 so that the transition timing from the power saving state to the communication state does not overlap with the bad weather time. Determine the required value for power saving time. Specifically, the control unit 130 determines the request value of the first timer and the request value of the second timer.

In step S204, the control unit 130 transmits an attach request message or a TAU request message including the power saving time request value determined in step S203 to the server 300 via the communication unit 120.

In step S205, the control unit 130 acquires the attach acceptance message or the TAU acceptance message including the set value of the power saving time from the server 300 via the communication unit 120.

In step S206, the control unit 130 changes the state of the communication unit 120 from the communication state to the power saving state.

In step S207, the control unit 130 confirms whether or not the set power saving time has elapsed (that is, whether or not the first timer and the second timer have expired).

When the set power saving time has elapsed (step S207: YES), in step S208, the control unit 130 shifts the communication unit 120 from the power saving state to the communication state, thereby performing wireless communication with the base station 210. Start. Then, the control unit 130 transmits the TAU request message to the management device 300 via the communication unit 120.

(Other embodiments)
In the above embodiment, an example in which the power saving state includes the PSM state has been described. However, when eDRX (extended Discontinues Reception) is used instead of PSM, the power saving state may include a sleep state of eDRX. eDRX is a discontinuous reception function applied to the communication device 100 in the RRC idle state. The communication device 100 to which eDRX is set monitors the paging message in a very long cycle in the RRC idle state. The sleep state of eDRX is a state in which the paging message is not monitored. The communication device 100 can stop power supply to the transmitter 121b and the receiver 121a in the eDRX sleep state.

Further, in the above-described embodiment, the battery remaining amount of the communication device 100 is not particularly considered. However, the operation of the communication device 100 according to the above-described embodiment may be applied only when the remaining battery amount of the communication device 100 is less than the threshold value.

Further, in the above-described embodiment, an example in which the communication device 100 is a sensor device having various sensors has been described. However, each communication device 100 is not limited to a sensor device, and may be any device as long as it has a communication function and is installed at a certain position.

A program that causes a computer to execute each process performed by the communication device 100 may be provided. The program may be recorded in a computer-readable medium. A computer readable medium can be used to install the program on a computer. Here, the computer-readable medium in which the program is recorded may be a non-transitory recording medium. The non-transitory recording medium is not particularly limited, but may be a recording medium such as a CD-ROM or a DVD-ROM. Further, the communication device 100 may be configured as a semiconductor integrated circuit (chip set, SoC) by integrating functional units (circuits) that execute respective processes performed by the communication device 100.

Although the embodiments have been described in detail with reference to the drawings, the specific configuration is not limited to the above, and various design changes and the like can be made without departing from the scope of the invention.

1: communication system 100: communication device 110: antenna 120: communication unit 121: LPWA communication unit 130: control unit 140: storage unit 150: power management unit 160: GNSS receiver 170: various sensors 200: communication network 210: base station 300: Server

Claims (9)

A communication device,
A communication unit that performs wireless communication with the base station,
A power saving state in which the wireless communication is not performed and a control unit that transitions the state of the communication unit between a communication state in which the wireless communication is possible;
The control unit is
Obtaining weather-related information about the weather conditions around the communication device,
A communication device that controls a transition timing from the power saving state to the communication state based on the weather-related information. The control unit is
On the basis of the weather-related information, the bad weather time around the communication device is bad is specified,
The communication device according to claim 1, wherein the transition timing is controlled so that the communication unit does not transition from the power saving state to the communication state during the specified bad weather time. The control unit, when the communication unit is in the power saving state, when the timing when it is necessary to start the wireless communication overlaps with the bad weather time, suspends the start of the wireless communication, and the bad weather time. The communication device according to claim 2, wherein the communication unit transitions to the communication state after a lapse of time. The control unit, when the communication unit is in the communication state, acquires the weather-related information from the outside via the communication unit,
The communication device according to claim 1, wherein the weather-related information is information about a future weather condition around the communication device. The control unit is
In order that the transition timing does not overlap with the bad weather time, the power saving time for continuing the power saving state in the communication unit is determined,
The communication device according to claim 4, wherein when the communication unit is in the communication state, the communication unit is controlled so as to transmit the information indicating the determined power saving time to a communication network. A GNSS receiver,
A storage unit that stores in advance first information indicating the position of the communication device,
The controller outputs error information indicating a difference between the second position information and the first position information obtained by using the GNSS receiver when the communication unit is in the power saving state. The communication device according to any one of claims 1 to 3, which is acquired as related information. A sensor for detecting at least one of rainfall, snowfall, and solar radiation;
The communication device according to claim 1, wherein the control unit acquires an output of the sensor as the weather-related information when the communication unit is in the power saving state. A method for controlling a communication device having a communication unit for performing wireless communication with a base station, comprising:
A step of acquiring weather-related information about a weather condition around the communication device,
Controlling the transition timing from the power saving state in which the wireless communication is not performed to the communication state in which the wireless communication is possible based on the weather related information. In a communication device having a communication unit that performs wireless communication with a base station,
A step of obtaining weather-related information about a weather condition around the communication device,
A step of controlling a transition timing from a power saving state in which the wireless communication is not performed to a communication state in which the wireless communication is possible based on the weather related information.

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