JPH09205396A - Radio terminal equipment and communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce power consumption without loss of service quality by supplying power to the equipment in response to a state, adding interruption processing on the occurrence of interruption of service and omitting undesired re- transmission. SOLUTION: Upon the receipt of a signal denoting an information reception request, a control section 2 sends a signal representing a 'battery residual capacity request' to a battery residual capacity sensor 3, and the battery residual capacity sensor 3 measures the capacity of a battery 4 and gives the result of measurement to a control section 2 as a battery residual capacity signal. When, e.g. the battery residual capacity does not meet a sufficient power to drive a transmission reception circuit 5 for transmission, the control section 2 controls power supply requiring to activate the transmission reception circuit 5 for only the reception to be fed to the transmission reception circuit 5 and sends information denoting 'disable transmission' to a radio base station 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless terminal device and a communication system for improving the battery saving of the communication system and the processing related to the service interruption.

[0002]

2. Description of the Related Art In recent years, various communication networks such as public networks and LANs (local area networks) have been established, and
These networks can be used by connecting them to each other. With the remarkable progress of electronic technology, communication technology, and computer technology, it has become possible to connect to the various networks to make a call and exchange data such as texts and images. Further, mobile communication for performing these communications using a wireless line has become popular, and various services can be used by connecting to the various communication networks from the destination.

A terminal device (hereinafter referred to as a mobile terminal device) that can be used at a destination such as mobile communication must be small and lightweight. When the portable terminal device is portable, it is difficult to take a form in which the power source is constantly pulled in from the outlet of the commercial power source and used. Therefore, the portable terminal device is generally operated by using a battery. . When the battery capacity is increased, the weight, size and cost of the battery increase. Therefore, the mobile terminal device is always required to save power.

In other words, if the user only turns on the power when the portable terminal device makes a call, the user can turn on the power switch each time to use it, and the communication time can be secured to some extent even if the battery has a small battery capacity. However, when it is necessary to receive an incoming call as well, it is not determined when the incoming call will occur, so it is necessary to operate the receiving circuit at all times to keep the incoming state.

However, the power consumed to enter this standby state is not ridiculous, and the battery is exhausted, so that the standby time for an incoming call is shortened, and the time during which actual communication can be carried out depends on the battery capacity. Depending on the degree of wear, there are problems such as frequent recharging or having to prepare and replace a spare battery.

On the other hand, with the sophistication of mobile communication systems in recent years, there has been a demand for communication at a high transmission rate. For transmission / reception at a high transmission rate, a high-speed processing circuit is also required. In addition to the large power consumption circuit,
In the case of wireless communication, it is necessary to use radio waves of high frequency, and transmission / reception by radio waves of high frequency consumes more power than that of low frequencies.

Therefore, if the portable terminal device is always set to the maximum transmission rate, power is consumed more than necessary when the transmission rate actually used during transmission and reception is lower than the maximum transmission rate. There will be a problem.

Furthermore, while using the portable terminal device,
If the remaining battery capacity of the mobile terminal device is exhausted, the services currently provided will be disrupted. Therefore, if the service is disrupted,
This results in the waste of having to receive the same service again from the beginning and to provide the same service twice.

Not only the situation where power must be supplied twice to the same service, for example, when a moving mobile terminal device is out of the communicable range or enters a tunnel. This is also a problem caused when the mobile terminal device enters a zone where it cannot communicate with the wireless base station.

[0010]

SUMMARY OF THE INVENTION In a conventional mobile terminal device capable of mobile communication, it is necessary to adapt to the highest communication speed according to the specifications of the system, regardless of the transmission speed of the service for which the communication speed is provided. Since the hardware operation speed and processing speed were set and used, the power consumption was the same as that of the highest speed communication even for slow speed transmission. There was extra power consumption, and it was unavoidable to uselessly consume the battery.

Moreover, when the service is interrupted, the same communication must be performed again from the beginning, which consumes twice as much power, which is a problem from the viewpoint of energy saving.

The present invention has been made in view of the above problems, and it is possible to use power consumption reasonably and efficiently without waste of power consumption and in response to transmission speed and service interruption. An object is to provide a wireless terminal device and a communication system.

[0013]

In order to achieve the above object, the present invention is configured as follows. Firstly, the present invention provides a wireless terminal device having a transmitting / receiving means for transmitting / receiving information to / from a wireless base station, wherein the wireless terminal is provided with a circuit for controlling the power supply of the transmitting / receiving circuit. When an unnecessary function exists during transmission / reception of information to / from the wireless base station, the power of the function is turned off.

Secondly, the wireless terminal device is provided with means for measuring a battery serving as a power source and a circuit for controlling the power source of the transmission / reception circuit, and the transmission / reception is performed between the wireless base station and the wireless terminal. When there is information to be set, by controlling the power supply of its own transmitter / receiver circuit according to the remaining battery level of the terminal, for example, by controlling the power supply to the transmitter circuit during reception and the receiver circuit during transmission. The feature is that the power consumption of the terminal can be controlled.

Thirdly, according to the present invention, the radio base station is provided with a transmitting / receiving means for transmitting information, has a transmitting / receiving means for transmitting / receiving to / from the radio base station, and has a power supply for the transmitting / receiving means. A circuit for controlling is provided in the wireless terminal, and means for transmitting / receiving information to / from the wireless terminal via the wireless base station is provided in the server, and a QOS (Quality of Service) is provided between the wireless terminal and the server.
e) By reciprocally reporting information such as remaining battery level,
It is characterized in that settings such as transmission speed and power supply control are made.

A fourth aspect of the present invention is to provide a transmitting / receiving means for transmitting information and a buffer for accumulating information to be transmitted to the wireless base station, and to transmit / receive to / from the wireless terminal to / from the wireless base station. Means and a circuit for controlling the power supply of the transmitting / receiving means, the server is provided with means for transmitting / receiving information to / from the wireless terminal via the wireless base station, and the wireless base station is configured to transmit the transmission speed from the server. By receiving the transmission condition information and the reception condition information such as the remaining battery level from the wireless terminal, the transmission speed between the server and the wireless base station and between the wireless base station and the wireless terminal is controlled. .

Fifth, according to the present invention, the radio base station is provided with a transmitting / receiving means for transmitting information and a buffer for accumulating information to be transmitted, and the radio base station is provided with transmission condition information. By receiving the reception condition information, the control for absorbing the difference in transmission rate is performed.

In the sixth aspect of the present invention, the radio base station is provided with a transmitting / receiving means for transmitting information and a buffer for accumulating the information to be transmitted, and the radio terminal is for transmitting / receiving to / from the radio base station. A transmission / reception means and a buffer for accumulating received information are provided, and the server is provided with means for transmitting / receiving information to / from the wireless terminal via the wireless base station, and it is possible to determine whether the information transmission is interrupted. Means to
If it is predicted in the service interruption condition determination that the service will be interrupted due to a decrease in the battery level, etc., take measures between the wireless terminal, the server, and the user, such as early termination or temporary interruption of the current service. It is characterized in that it has a function of restarting the service when the service is made possible again by recovering the remaining battery level when the service is interrupted.

In a seventh aspect of the present invention, the radio base station is provided with a transmitting / receiving means for transmitting information and a buffer for accumulating the information to be transmitted, and the radio terminal is for transmitting / receiving to / from the radio base station. A transmission / reception unit and a buffer for accumulating the received information are provided, and the server is provided with a unit for transmitting / receiving the information to / from the wireless terminal via the wireless base station, and the possibility that the information transmission is interrupted is determined. Means to
In the case where it is predicted in the service interruption condition determination that the service will be interrupted due to the passage of the tunnel of the wireless terminal, etc., before the service is interrupted, the transmission rate is increased and information for the predicted service interruption time is provided. By transmitting and receiving, it is possible to receive a pseudo service while the service is interrupted.

In the eighth aspect of the present invention, the wireless base station is provided with a transmitting / receiving means for transmitting information, and the wireless terminal is provided with a transmitting / receiving means for transmitting / receiving to / from the wireless base station and a power supply for the transmitting / receiving circuit. A control circuit is provided, the server is provided with means for transmitting and receiving information to and from the wireless terminal via the wireless base station, and when the wireless terminal interrupts service due to intrusion of a dead zone of radio waves, the wireless terminal When the terminal needs to maintain the state of the service, the power supply of a function unnecessary for retaining the state of the service is turned off.

(Operation) In the first configuration, the wireless terminal device is configured to control the power supply of the functional elements unnecessary for performing the service in accordance with the service content. Therefore, it is possible to suppress unnecessary consumption of the battery, and the battery can be effectively used.

In the second configuration, the wireless terminal device is provided with a circuit for controlling the power supply of the transmission / reception circuit, and when there is information to be transmitted / received between the wireless base station and the wireless terminal, the terminal is According to the remaining battery level, the power supply of its own transmission / reception circuit is controlled, for example, the power of the transmission circuit is cut off during reception and the power of the reception circuit is cut off during transmission.
As a result, the power consumption of the wireless terminal device can be controlled, and when the battery capacity is low, it is possible to provide services so that the service is not stopped halfway.

As described above, in the first and second configurations, power is not supplied to a function which is considered unnecessary for the information being transmitted and received, and the unnecessary function is required. At this stage, by supplying power to the function, power consumption can be suppressed without degrading the quality of service.

Further, in the present invention, a buffer for accumulating information to be transmitted to the wireless terminal is provided in the wireless base station, and the wireless terminal can control the power consumption of the low power consumption receiving circuit which constantly operates and the power source. A control circuit is provided to control the transmission rate to provide the required amount of power and transmission rate depending on the service. In addition, in order to prevent power consumption, the service provided is suspended when the service is interrupted.

In general, the power consumption of each wireless device constituting the wireless terminal device increases as the bandwidth becomes wider. If the power per band is the same, the one with a wider bandwidth consumes more power. Further, the loss amount of each device or line becomes larger as the frequency becomes higher. Therefore, in order to compensate for it, more power is consumed as the frequency becomes higher.

When the transmission rate is 1 to 2 [kbps] and 155
Comparing the case of [Mbps], 1-2 [kbps] is several hundreds
Transmission in the [MHz] band is possible, but if transmission speed of 155 [Mbps] is used in this band, it is difficult because other communication cannot be performed at all, and millimeter waves in the 20-6 [GHz] band and the like are difficult. I have no choice but to do it with an obi.

From the above, the higher the transmission speed, the more power is required. In the third configuration, information such as QOS and remaining battery level is mutually declared, and the transmission speed and the power supply are controlled accordingly, so that information can be transmitted in an appropriate state. The power of the terminal can be effectively used.

Specifically, when the service is provided, the server sends information such as service type and required transmission rate to the wireless terminal, and the wireless terminal sends information such as QOS and remaining battery level. And set the quality of service. According to the present invention, by setting the quality of service between the server and the wireless terminal in advance and controlling the transmission speed and the power supply, the best service is possible at that time and the power consumption of the terminal is reduced. Can be suppressed.

In the fourth configuration, the wireless base station receives the transmission condition information from the server and the reception condition information from the wireless terminal, and when the transmission speed of the server exceeds the reception speed of the wireless terminal, the transmission information is transmitted. Is temporarily stored in a buffer, and information is transmitted according to the reception speed of the wireless terminal. According to the present invention, the wireless base station absorbs the difference in transmission rate, so that even if the receiving capability of the wireless terminal is low due to the effect of the remaining battery level, it is possible to receive the service uniformly. Further, the server does not need to be aware that the other party is a wireless terminal.

In the fifth configuration, the radio base station receives the transmission condition information and the reception condition information, and when the transmission speed exceeds the reception speed, the transmission information is accumulated in the temporary buffer. Information is transmitted according to the reception speed of the wireless terminal. According to the present invention, the wireless base station can receive a uniform service by absorbing the difference in transmission rate.

In the sixth configuration, when it is predicted that the wireless terminal will be out of service due to a decrease in the remaining battery level or the like, the wireless terminal, the server, and the user determine the service end. If you want to suspend the service,
The service is restarted when the service can be restarted due to the recovery of the battery level or the like. According to the present invention, it is possible to prevent unintended service interruption by determining the service interruption condition.

In the seventh configuration, when the communication is expected to be interrupted due to the wireless terminal entering a tunnel or the like, the transmission rate is increased in advance and the buffer provided in the wireless terminal is used in advance. Information is stored in advance, and information is read from the buffer and used even after communication is interrupted, thereby providing a pseudo service. According to the present invention, since the wireless terminal has the buffer, it becomes possible to continue the service even during the communication interruption.

In the eighth configuration, when service is temporarily suspended, power supply to unnecessary components is stopped, and power supply to components required to recover from the interruption is continued. , Provide only the amount of power required for interruption. According to the present invention, the supply of unnecessary electric power is stopped at the time of interruption, so that it is possible to prevent the reduction of the battery level, and it is possible to immediately restart the service if the interruption condition is eliminated.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific examples of the communication system of the present invention will be described in detail below with reference to the accompanying drawings. First, by controlling the amount of power supplied to the transmitter / receiver circuit according to the measurement result of the remaining battery level, it is possible to provide a rational service such as providing a service that ensures quality even when the remaining battery level is low. An example in which battery consumption can be suppressed will be described.

(First Specific Example) In the first specific example, a wireless base station having a transmitting / receiving means for transmitting information and a battery as a power source are used for transmitting / receiving data to / from the wireless base station. In a communication system including a wireless terminal having a transmitting / receiving means, the wireless terminal has a configuration in which the transmitting / receiving means has a power system for a transmission system and a power system for a receiving system, and the wireless terminal has the power system opened / closed. When there is information to be transmitted and received between the wireless base station and the wireless terminal, the control means for controlling and the means for measuring the remaining battery amount are provided, and the battery of the terminal is included in the control means. By controlling the circuit of the terminal according to the remaining amount, it is possible to control the power consumption of the terminal.

FIG. 1A is a block diagram showing a schematic configuration of a communication system that realizes such a function, and FIG. 1B is an operation transition diagram thereof. In FIG. 1A, 1 is a wireless terminal device, 2 is a control unit, 3 is a battery level sensor, 4 is a battery, 5 is a transmission / reception circuit, 11 is a voice circuit, and 12 is a display circuit.

Further, 6 is a battery remaining amount signal from the battery remaining amount sensor 3, and 7a is a power supply operation signal for circuit operation sent from the control unit 2 to the voice circuit 11 and from the transmission / reception circuit 5 to the voice circuit 11. , A signal such as a voice signal sent from the voice circuit 11 to the transmitting / receiving circuit 5. Further, 7b is a power supply operation signal sent from the control unit 2 to the transmission / reception circuit 5 for operating the circuit and various signals such as audio signals and image signals output from the transmission / reception circuit 5, and 7c is sent from the control unit 2 to the display circuit 12. They are signals such as power supply operation signals sent for circuit operation and image signals sent from the transmission / reception circuit 5 to the display circuit 12. Moreover, 8 is an antenna corresponding to transmission and reception. Reference numeral 9 is a radio base station, and 10 is an antenna corresponding to transmission / reception in the radio base station 9.

The battery 4 serves as an operating power source for the components of the wireless terminal device 1, and the battery remaining amount sensor 3 detects the remaining amount (remaining battery capacity) of the battery 4 to detect the remaining amount. Is output.

The control unit 2 controls various components of the wireless terminal device 1, sends an output voice signal to the voice circuit 11, and transmits / receives an input voice signal from the voice circuit 11 to the transmitting / receiving circuit 5. In addition to sending to the display circuit 12, the image signal received by the transmission / reception circuit 5 is sent to the display circuit 12. Further, when the control unit 2 receives the signal of "information reception request", it sends a signal indicating "remaining battery amount request" to the battery remaining amount sensor 3, and when it receives the battery remaining amount signal from the battery remaining amount sensor 3, It has a function of determining a circuit element for supplying power according to a service level as shown in FIG. 2 determined according to the remaining amount and controlling power supply to a corresponding circuit according to the circuit element.

For example, as shown in FIG. 2, the service level is determined according to the remaining battery level (power amounts P1, P2), and the service level is "level 1" for the power amount P1 and "service level" for the power P2. Level 2 ".

In this example, at the service level "level 2" where the charge amount is sufficient, all services including a service requiring a transmission operation from itself are enabled (when the transmission / reception circuit 5 is operated for transmission / reception). The necessary power is controlled to be supplied from the battery 4), and the notification that the transmission from itself is impossible at "level 1" is sent to the radio base station 9 and the service that requires the transmission operation from itself cannot be performed. Power supply control (controlling the transmitter / receiver circuit 5 so that power is supplied from the battery 4 only to the receiving system)
It has such a function.

Therefore, in this example, the transmission / reception circuit 5 has a radio transmission / reception function, and the configuration of the power supply system of the transmission system and the power supply system of the reception system is divided so that the power supply switching operation as described above can be performed. 2 is provided with a function capable of performing selective input control of the divided power supply system according to the level.

The voice circuit 11 is a circuit for inputting / outputting voice, and the display circuit 12 is a flat panel display such as an LCD (liquid crystal display) for displaying texts, images, messages and the like.

Next, the operation of the first specific example will be described. In FIG. 1B, it is assumed that the transmission / reception circuit 5 in the wireless terminal device 1 receives a signal (S101) indicating “information transmission request” from the wireless base station 9. Then, the transmission / reception circuit 5 sends the received signal to the power supply control unit 2 ("information reception request (S102)").

When the control section 2 receives the signal indicating the information reception request, it sends a signal indicating the "battery level request" to the battery level sensor 3 (S103). The battery capacity is measured and the measurement result is sent to the control unit 2 as a battery remaining amount signal (S104). When the battery level signal (S104) is received, the control unit 2 determines the service with the service level "level 1" at the power P1 and the service level "level 2" at the power P2 from the signal as shown in FIG. In response to the decided service,
The power (P101) to be applied to the transmitting / receiving circuit 5 is determined and the supply control to the transmitting / receiving circuit 5 is performed.

For example, when the remaining battery power is less than the amount of electric power enough to drive the transmitting / receiving circuit 5 for transmission, only the reception is performed and the electric power required for operating the transmitting / receiving circuit 5 ( The power supply is controlled so that only P102) is supplied to the transmission / reception circuit 5, and information (S105) indicating "untransmittable" is transmitted to the wireless base station 9. As a result, the wireless base station 9 knows that the terminal side can receive, but is in the "untransmittable" state, and the service for transmitting information to the terminal continues, and the service that requires transmission from the terminal is Control to stop.

As a result, when the power amount cannot be sufficiently secured, only reception is possible, the receiving service is continued, and the quality of the service is deteriorated and the service is cut off by continuing transmission and reception in the state where the power cannot be secured sufficiently. The connected use can be suppressed. Moreover, in this specific example,
Since it is possible to supply electric power commensurate with the amount of remaining electric power and the service, it becomes possible to reduce the power consumption and continue the service that can be provided under the present circumstances to provide convenience to the user.

As described above, in this specific example, by controlling the amount of power supplied to the transmission / reception circuit 5 in accordance with the measurement result of the battery remaining amount, it is possible to provide a service in which the quality can be secured even when the battery remaining amount is low. Enables reasonable service.

In the above, the power supply of the transmission / reception circuit system is divided into the transmission system and the reception system, and if there is a system not necessary for service due to the remaining battery power, the system is powered off. It was designed to suppress the battery consumption. However, not only the power supply of the transmission / reception circuit system, but also other components may not be used depending on the content of the service, and it is not possible to turn on the power of those elements unnecessary for the current service and keep them in the operating state. This is a factor that causes unnecessary battery consumption. Therefore, an example in which useless battery consumption is suppressed by coping with such a case regardless of the battery remaining capacity will be described below.

(Second Specific Example) FIG. 3A shows a power supply for an unnecessary function when the wireless terminal transmits and receives information to and from the wireless base station. FIG. 3 is a configuration diagram of a communication system that can be turned off, and FIG. 3B shows an operation transition diagram thereof.

The configuration of the second specific example is basically the same as the configuration diagram of the first specific example, and the same components are designated by the same reference numerals. However, the audio circuit shown by the reference numeral 11a and the display circuit shown by the reference numeral 12a are configured so that the control unit 2 can control ON / OFF of the power supply thereof, and the audio circuit 11 in the first specific example. Is slightly different from the display circuit 12. Further, in the second specific example, the control unit 2 is provided with a power-on / off control function for the audio circuit 11a and the display circuit 12a.

In addition, ARQ (Automatic Repeat Reques
There is an ARQ circuit (retransmission control circuit) for performing retransmission control by a control signal for retransmission control, which is used when transmitting and receiving a control signal for t).
The RQ circuit can be turned on and off by the control unit 2. Further, the display circuit 12a has a color control circuit and a backlight circuit in the case of a configuration of an LCD display capable of color display, and these power supplies can be on / off controlled by the control unit 2.
Further, the control unit 2 can control to turn off the power of the display control system circuit in the portion of the display of the display circuit 12a which does not display.

Next, the operation of the second specific example will be described. When the transmission / reception circuit 5 in the wireless terminal device 1 receives the signal indicating the “information transmission request” from the wireless base station 9, the transmission / reception circuit 5 transmits the signal indicating the “information reception request” to the control unit 2. At this time, when the ARQ (control signal for retransmission control) is not exchanged, the control unit 2 turns off the power supply of the ARQ circuit.

Next, the operation of the second specific example will be described. When the transmission / reception circuit 5 in the wireless terminal device 1 receives the signal indicating the “information transmission request” from the wireless base station 9, the transmission / reception circuit 5 sends a signal indicating the “information reception request” to the control unit 2. At this time, when the wireless terminal device 1 does not perform transmission, the control unit 2 controls to turn off the power supply of the transmission system circuit of the transmission / reception circuit 5.

At this time, when the color display is not performed, the control unit 2 controls so that the power supplies of the color control circuit and the backlight circuit of the display circuit 12a are turned off. Further, the control unit 2 controls to turn off the power of the display control system circuit of the portion of the display of the display circuit 12a which does not display. That is, when the display circuit 12a is a color display device, the color display consumes more power than the monochrome display. Therefore, the display area is divided so that the power supply can be controlled separately for each area. If there is an area that is not to be operated, it is possible to turn off the power of the display control system circuit in that area, or to turn off the power of the color control circuit and the backlight circuit. Can be turned off to reduce power consumption.

Further, in the case where the decompression processing circuit having a function of decompressing (decompressing) the compressed information when receiving the compressed information is turned on / off. The transmission / reception circuit 5 in the wireless terminal device 1 receives the signal indicating the “information transmission request” from the wireless base station 9, and the transmission / reception circuit 5 transmits the signal indicating the “information transmission request” to the control unit 2. If the decompressed information is transmitted when sent, the power of the decompression processing circuit is turned off to reduce power consumption by turning off the power of unnecessary functions. be able to.

In the above, an example has been described in which unnecessary power consumption is suppressed by turning off the power source of the components unnecessary for the current service. To save power on the terminal,
Not only turning off the power of unnecessary components, but also the high and low information transmission speeds have a great influence. Therefore, if the transmission rate is made variable according to the content of the service and the component is made to perform the operation according to the transmission rate, the terminal does not always needlessly operate in the high-speed transmission compatible state. Therefore, an example in which such operation is possible will be described as a third specific example.

(Third Concrete Example) This concrete example controls the power supply of a radio base station having a transmitting / receiving means for transmitting information and a transmitting / receiving means for transmitting / receiving between the radio base station and a receiving circuit. In a communication system including a wireless terminal having a circuit for performing the above operation, and a server having means for transmitting / receiving information to / from the wireless terminal via the wireless base station, a QOS and a remaining battery are provided between the wireless terminal and the server. The information such as the quantity is mutually declared to set the transmission speed, the transmission method, the power supply control method, etc. FIG. 4 shows an example of the configuration. 4, the same numbers as those in FIG. 1 indicate the same configurations.

In FIG. 4, 51 is a buffer, and 5
2 is a network, 53 is a node, and 54 is a server. The buffer 51 is a storage unit for temporarily holding information sent from the wireless base station 9 to the wireless terminal device, and the server 54 has a function of storing and distributing the information. The server 54 is connected to the network 52 via the node 53, and the wireless base station 9 is connected to the server 54 via the network 52 so that information can be exchanged. The node 53 is a node between the network to which the wireless base station 9 belongs and the network to which the server 54 belongs.

The operation of the system of the third specific example having such a configuration will be described with reference to the operation transition diagram of FIG.
Here, an example will be described in which the server 54 stores information for the wireless terminal device 1 and causes the wireless terminal device 1 to receive the stored information in response to an information transmission request from the server 54.

When the wireless terminal device 1 transmits / receives information to / from the server 54 through the wireless base station 9, an information transmission request (S201) is generated from the server 54, and this request is sent to the wireless base station 9 via the network 52. And is transmitted from the wireless base station 9 to the wireless terminal device 1. When the transmission / reception circuit 5 in the wireless terminal device 1 receives the signal (S201) indicating the information transmission request from the server 54, it transmits the signal (S202) indicating the information reception request to the control unit 2.

The control unit 2 sends a signal (S203) indicating "battery remaining amount request" to the battery remaining amount sensor 3 and a signal (S205) indicating "information receiving instruction" to the transmitting / receiving circuit 5.
The battery level sensor 3 that has received the "battery level request" measures the battery capacity of the battery 4 and sends the measurement result to the control unit 2 as a battery level signal (S207).

On the other hand, the transmission / reception circuit 5 which has received the signal (S205) indicating the "information reception instruction" transmits it to the radio base station 9, and the radio base station 9 sends it to the server 54 via the network 52. introduce.

Upon receiving this, the server 54 receives the transmission speed, the transmission time, the color information (the number of colors; color modes such as full color and 256 colors), the screen size, as shown in FIG.
Information indicating the quality of service (S206) such as compression mode information, resolution rank information, and hierarchical information is output, and this information is transmitted to the wireless terminal device 1 via the wireless base station 9. Then, this information is received by the transmission / reception circuit 5 of the wireless terminal device 1 and passed to the control unit 2.

The control unit 2 of the wireless terminal device 1 determines the optimum transmission rate based on the battery remaining amount information (S207) received from the ionization remaining amount sensor 3 and the service quality information (S206) from the server 54. The information is set and the information (S208) is transmitted to the server 54 through the transmission / reception circuit 5. And
The server 54 gives an instruction to the wireless base station 9 to transmit the information at the instructed transmission rate, and the wireless base station 9 transmits the information from the server 54 to the wireless terminal device 1 at the transmission rate according to the instruction. To do.

Further, the control unit 2 controls the wireless terminal device 1 to operate under optimum conditions according to the service quality and the battery remaining amount information. In this specific example, the service quality and the battery remaining amount are used, and the terminal can be used in accordance with the state of the terminal. Therefore, it is possible to reduce the optimal service and power consumption.

The difference in transmission speed hinders smooth transmission / reception, and causes a failure in successful transmission / reception in one transmission, resulting in repeated transmission / reception. This leads to useless power consumption. Therefore, a specific example will be described below that absorbs the difference in connection transmission speed to provide a service that matches the state of the terminal and to avoid unnecessary retransmission.

(Fourth Concrete Example) In this concrete example, between a radio base station having a transmitting / receiving means for transmitting information and having a buffer for accumulating the information to be transmitted, and the radio base station. Wired wireless communication including a wireless terminal including a transmission / reception circuit for transmitting / receiving and a circuit for controlling a power supply of the transmission / reception circuit, and a server that stores information and transmits / receives information to / from the wireless terminal via the wireless base station In the system, the wireless base station receives the transmission condition information such as the transmission rate from the server and the reception condition information such as the remaining battery level from the wireless terminal. The transmission speed between the station and the wireless terminal is controlled, and FIG. 7 shows a configuration example thereof.

In FIG. 7, the same parts as those in FIG. 4 show the same structures. In FIG. 7, reference numeral 81 is a wired transmission line such as a LAN, 811 is a transmission / reception circuit, and 812 is a control unit. The server 54 and the wireless base station 9 are connected to the wired transmission line 81, and the wireless base station 9 has a transmission / reception circuit 811 and a control unit 812.

Next, the operation of the fourth specific example will be described with reference to the operation transition diagram of FIG. Here, the server 54
Accumulates information to the wireless terminal device 1 and the accumulated information is requested from the server 54 by the information transmission request.
An example will be described below.

When the wireless terminal device 1 transmits / receives information to / from the server 54 through the wireless base station 9, the server 54 issues an information transmission request (S301), and this request is sent to the wireless base station 9 via the network 52. To be Then, the transmission / reception circuit 811 in the radio base station 9 transmits a signal indicating the “transmission start request” to the control unit 812 in the radio base station 9 accordingly.

Then, the control unit 812 sends a signal indicating "transmission transmission condition request" through the transmission / reception circuit 811 (S302).
Is transmitted to the server 54, and a signal (S303) indicating a “transmission start request” is transmitted to the wireless terminal device 1.

Then, the transmission / reception circuit 5 in the wireless terminal device 1
When receiving the signal (S303) indicating the "transmission start request", transmits a signal (S304) indicating the "information reception request" to the control unit 2 in the wireless terminal device 1, and the wireless terminal device 1 in which the signal is received receives the signal. The control unit 2 sends a signal (S3
05) is transmitted to the battery level sensor 3. The battery level sensor 3 thereby measures the battery level and sends it to the control unit 2 as a signal (S306) indicating "battery level".

The control unit 2 sends a signal (S
When 306) is received, optimum reception and transmission conditions are set based on this, and a signal (S307) indicating "reception and transmission conditions and transmission start instruction" is transmitted to the wireless base station through the transmission / reception circuit 5. To do.

When the server 54 receives the signal (S302) indicating "transmission transmission condition request", it transmits the signal (S308) indicating "transmission transmission condition". The transmission / reception circuit 811 in the radio base station 9 transmits a signal (S307) indicating “reception transmission condition information and transmission start instruction” and a signal (S308) indicating “transmission transmission condition information” to the control unit 812.

As a result, the control unit 812 causes the transmission / reception circuit 8
11, the server 54 transmits a signal indicating a “transmission start instruction” (S309), and transmits a signal indicating a “reception start instruction” (S310) to the wireless terminal device 1. In addition, the control unit 812 in the wireless base station 9 considers the reception condition from the wireless terminal device 1, and, for example, when the transmission condition is faster than the reception condition as shown in FIG. "Select", "Select information to send", "Buffer 5"
The information is transmitted to the wireless terminal device 1 by selecting and using an optimum one of the methods such as "1.

In this specific example, by absorbing the difference in transmission rate, the service corresponding to the state of the terminal is provided, and
Unnecessary retransmissions can be avoided. Further, the server does not need to be aware that the other party is a wireless terminal.

Another example will be described. In FIG. 10, the same parts as those in FIG. 7 show the same structures. In FIG. 10, reference numeral 82 indicates a router. The router 82 is a device for selecting a transmission line, and is an optimum line when a plurality of lines with different charge systems such as a leased line, a public line, and a type 2 telecommunications carrier line can be used depending on time zones and distances. Is a device for selecting.

In this case also, the function of the above-mentioned fourth concrete example can be applied as it is, the radio base station 9 and the server 54 are on different wired transmission lines, and these wired transmission lines are connected via the router 8. 11 also, as shown in FIG. 11, a wired transmission line network 84 exists between the wireless base station 9 and the server 54, and the wireless base station 9 and the server 54 connect the wired transmission line network 84 via the gateway 83. The same operation is performed in the case of the configuration connected to the. Note that, in FIG. 11, the same components as those in FIG. 7 indicate the same configurations.

FIG. 12 shows an example in which a wireless base station is connected to the server. In FIG. 12, the same parts as those in FIG. 7 show the same structures. In FIG. 12, reference numeral 85 denotes a wireless base station, which has a configuration in which the wireless base station 85 is connected to the server 54.

In the case of this example, the wireless base station 8 is stored in the server 54.
5 is connected and information is exchanged with the server 54 directly via the wireless base station 85. However, except for using wireless for transmitting and receiving information between the server 54 and the wireless base station 9, FIG. The example is the same as that of FIG. 7, and the function is the same as that of FIG. 7. Then, the fourth specific example can be applied as it is.

Similarly, it can be directly applied to a system using a public network such as ISDN. FIG. 13 shows an example thereof, and the same elements as those in FIG. 7 show the same configurations. In FIG. 13, reference numeral 86 denotes a public network such as ISDN. In this example, the server 54 and the wireless base station 9 are connected via the public network 86, but the point is that the public network 86 is used. Although different, the function is the same as in FIG. 7.

As described above, the fourth specific example can be used even when the server 54 and the wireless base station 9 are connected to the wired transmission line network 86. Absorbing the difference in transmission speed,
Next, another example will be described in which a technique is applied in which a service suitable for the state of the terminal is performed and unnecessary retransmission is avoided.

FIG. 14 is a schematic block diagram showing a radio base station configured so that control for absorbing a difference in transmission rate from a radio terminal can be performed by giving transmission condition information and reception condition information. In FIG. 14, the same components as those in FIG. 7 indicate the same configurations.

In FIG. 14, reference numeral 881 denotes a transmission / reception circuit, and 88
Reference numeral 2 is a control circuit and 883 is a buffer, which are built in the radio base station 9. In this device, the transmission / reception circuit 881 in the radio base station 9 receives the transmission condition information and the reception condition information from the radio terminal device 1, and transmits the transmission condition information and the reception condition information to the control circuit 882. Control circuit 882
If the transmission rate of the transmission condition and the transmission rate of the reception condition are different from these information, the buffer 8 stores the difference between the transmission rates.
The accumulation signal is transmitted to the transmission / reception circuit 881 for accumulation in 83, and transmission is performed at this reception speed. That is, the information to be transmitted is temporarily stored in the buffer 883, read out according to the speed of the receiving side, and transmitted to the wireless terminal device 1.

In this example, the buffer is used to absorb the difference in transmission rate, so that it is possible to provide a service corresponding to the state of the terminal and avoid unnecessary retransmission.

The above is an example in which the difference in transmission rate is absorbed to provide the service corresponding to the state of the terminal and avoid unnecessary retransmission. By the way, if the service is expected to be disrupted, the same service will be provided if the service is suspended instead of being terminated and restarted when the service becomes available.
It becomes possible to avoid the waste of providing once. As a result, it is possible to reduce the amount of remaining battery power used and prevent deterioration of service quality due to service interruption. An example thereof will be described below as a fifth specific example. .

(Fifth Concrete Example) In this concrete example, a radio base station provided with a transmitting / receiving means for transmitting information and a buffer for accumulating information to be transmitted, and a transmitting / receiving means for communicating with the radio base station. And a means for determining the possibility of interruption of the information transmission, in a communication system comprising a wireless terminal having the following, and a server for accumulating the information and transmitting / receiving the information to / from the wireless terminal via the wireless base station: In the case where it is predicted in the service interruption condition determination that the service will be interrupted due to a decrease in the battery level, etc.,
Wireless terminals, such as the early termination of current services,
It is a system that has a function to restart the service when it is judged again between the server and the user, and when the service is temporarily suspended due to the recovery of the battery level etc. when the service is temporarily suspended. FIG. 15 shows a block diagram of the communication system.

In FIG. 15, the same numbers as in FIG. 7 indicate the same configurations. In FIG. 15, reference numeral 91 is a buffer, and 92 is a battery auxiliary power source, and the wireless terminal device 1 further incorporates these. In addition, when the wireless terminal device 1 predicts that the service will be interrupted, the wireless terminal device 1 controls the wireless base station to send a signal indicating “service disruption prediction” to the wireless base station 9 and uses the battery auxiliary power supply 92 to suspend the service. It has a function to stand by, and when the service can be resumed, the service suspended state is released to resume from the previous suspended state. Such a control function is performed by the control unit 2
To have.

In the communication system having such a configuration,
When the wireless terminal device 1 is transmitting and receiving information to and from the server 54 through the wireless base station 9, it is predicted that the service will be interrupted due to the exhaustion of the battery level or the intrusion of the outside of the service area. When the wireless terminal device 1 predicts the service interruption, the control unit 2 of the wireless terminal device 1 transmits a signal (S401) indicating “service interruption prediction” to the server 54. For example, the case where the measured value of the battery capacity by the battery remaining amount sensor 3 becomes equal to or less than the specified value, or the time when the tunnel passes can be scheduled in the case of a train operating according to the schedule, etc.

When the server 54 receives the service interruption prediction, the server 54 is provided with a function of controlling the service interruption to the wireless terminal device 1 and restarting the service from the interruption place if there is an instruction to resume. .

Therefore, the server 54 sends a signal (S) indicating the service interruption prediction from the wireless terminal device 1 via the wireless base station 9.
401) (see FIG. 16A), the current service to the wireless terminal device 1 is suspended, and a signal indicating the predicted service disruption reception (S40).
2) (see FIG. 16A) is transmitted to the wireless terminal device 1. When the wireless terminal device 1 receives the signal (S402) indicating "service disruption prediction receipt", it suspends the service. In the service suspended state, upon receiving a restart instruction, the service is restarted at that point.

In the above, the service is interrupted by an instruction from the wireless terminal device 1 side, but the service may be interrupted by an instruction from the server 54 side.

That is, it is assumed that the server 54 has a configuration capable of predicting a service disruption, and when the server 54 predicts a service disruption, the current service is suspended and "service disruption prediction" is shown. Signal (S
403) (see FIG. 16B) to the wireless terminal device 1. When the wireless terminal device 1 receives the signal indicating "service disruption prediction" (S403), the control unit 2 thereby suspends the service currently being performed, and signals indicating "service disruption prediction receipt" (S404). ) (Fig. 16
(See (b)) is transmitted to the server 54. When the communication is established again, the service is restarted from the suspended state.

In this specific example, when the service is predicted to be interrupted, it is not necessary to provide the same service twice by suspending the service instead of terminating the service. Can be reduced.
Further, it is possible to prevent deterioration of service quality due to service interruption.

The interruption state control based on such service interruption prediction is performed by the radio base station 9 and the server 5 as shown in FIG.
The present invention is also applicable to the case where 4 are in different wired transmission lines and these wired transmission lines are connected via the router 8. Further, as shown in FIG. 18, a wired transmission line network 84 exists between the wireless base station 9 and the server 54, and the wireless base station 9 and the server 5 are connected.
It can also be applied to the case where it is connected to the wired transmission line network 84 via the 4-gateway 83.

In FIGS. 17 and 18, the same elements as those in FIGS. 15, 10 and 13 show the same configurations, and in this case also, the fifth specific example can be applied as it is, and the wireless base station 9 and the server 54 can be used. Even if the wired transmission paths are different from each other and these wired transmission paths are connected via the router 8, the service is not terminated when the service is predicted to be interrupted, but the service is suspended. Therefore, it is not necessary to provide the same service twice, and it is possible to reduce the usage amount of the remaining battery level. Further, it is possible to prevent deterioration of service quality due to service interruption.

Further, as shown in FIG. 18, a wired transmission line network 84 exists between the wireless base station 9 and the server 54, and the wireless base station 9
Even when the server 54 is connected to the wired transmission line network 84 via the gateway 83, the fifth specific example can be applied and the same operation is performed.

FIG. 19 shows an example in which the wireless base station 85 is connected to the server 54 and wireless is used for transmitting and receiving information between the server 54 and the wireless base station 9, but this configuration also provides the fifth example. The specific example is applicable, and the same operation is performed.

Further, as shown in FIG. 20, the fifth specific example can be applied to the case where the server 54 and the radio base station 9 are connected to the wired transmission line network 86, and the same operation is performed.

By the way, when a server provides information to a terminal and there are a large number of terminals to be serviced, it is not possible to continue the service to only one terminal. The situation arises where services are provided. Alternatively, there is a situation in which the terminal temporarily cannot exchange information such as when the terminal enters the tunnel. Then, in such a case, the service for itself is intermittently performed from the viewpoint of a certain terminal, and the service is interrupted, resulting in poor quality service. Especially when it comes to services such as movies. Even in such a case, it is possible to improve user service if services can be provided without interruption. Therefore, an example of such a case will be described next as a sixth specific example.

(Sixth Concrete Example) This concrete example is for transmitting and receiving between a radio base station provided with a transmitting / receiving means for transmitting information and a buffer for accumulating information to be transmitted, and the radio base station. In a communication system comprising a wireless terminal having a transmitting / receiving means and a buffer for storing received information, and a server for storing information and transmitting / receiving information to / from the wireless terminal via the wireless base station,
By providing a means for determining the possibility of interruption of the information transmission, there is a possibility that the service may be interrupted when there are many wireless terminals to be serviced or when the wireless terminals pass through a tunnel. When predicted in the service interruption condition determination, before the service is interrupted, the transmission rate is increased, information for the expected service interruption time is transmitted / received and accumulated in a buffer, and by using this, While the service is interrupted, the service can be artificially received.
2 shows the operation diagram. The configuration of the sixth specific example is the same as the configuration diagram of the fifth specific example.

Next, FIG. 15 and FIG. 2 for the sixth concrete example.
1 and FIG. 22 (a), (b). When the transmission / reception circuit 5 in the wireless terminal device 1 transmits / receives information to / from the server 54 through the wireless base station 9, it is predicted that the service will be interrupted due to the wireless terminal device 1 entering a tunnel or the like. In this case, when the wireless terminal device 1 predicts the service interruption, it transmits a signal (S501) indicating "service interruption prediction and buffer capacity" to the server 54.

When the server 54 receives the signal (S501) indicating "service disruption prediction and buffer capacity", it transmits a signal (S502) indicating "service disruption prediction receipt" to the wireless terminal device 1, and the wireless terminal device 1 A signal (S503) indicating "acknowledgement reply" is transmitted.

When the server 54 predicts the service interruption, a signal indicating "service interruption prediction" (S50).
4) is transmitted to the wireless terminal device 1. This is the transmitter / receiver circuit 5
In the wireless terminal device 1 received via the transmission / reception circuit 5, the transmission / reception circuit 5 sends the command to the control unit 2, and the control unit 2 transmits the service interruption prediction command and a signal (S505) indicating the buffer capacity to the server 54.

The server 54 sends a signal indicating the receipt reply (S50
3) or when receiving a service interruption prediction command and a signal (S505) indicating the buffer capacity, the wireless terminal device 1 is instructed to increase the transmission speed, and then the service for the required time is provided within the buffer capacity range. Information on the amount to be supplied is transmitted to the wireless terminal device 1 via the wireless base station 9 at the increased transmission rate.

Specifically, as shown in FIG. 21, Μ [kbps]
If the service of the transmission speed of 1 is provided to the wireless terminal device 1 and the service interruption time is T seconds, the information of Μ × T [Bit] is transmitted to the wireless terminal device 1 by increasing the transmission speed before the service interruption. Send.

Therefore, the server 54 makes a "previous transmission request".
The signal indicating the signal (S506) is transmitted to the terminal device 1. The wireless terminal device 1 transmits a signal (S507) indicating the “advance transmission instruction” to the server 54. The server 54 transmits the information to the wireless terminal device 1, and the wireless terminal device 1 stores the transmitted information in its own buffer 91. When the communication is interrupted, the control unit 2 of the wireless terminal device 1 uses the information accumulated in the buffer 91 to continue the service and provides it to the user. At this time, when there is a problem in the remaining amount of the battery 4, the auxiliary power source 92 of the battery is used for servicing.

In this specific example, it is possible to provide a continuous service by previously transmitting the information for the service interruption time. In addition, it is possible to prevent deterioration of service quality due to service interruption.

This function can also be applied to the apparatus having the configuration shown in FIG. That is, even when the wireless base station 9 and the server 54 are on different wired transmission lines and these wired transmission lines are connected via the router 8, the buffer 91 is provided in the wireless terminal device 1 for the service interruption time. Information in this buffer 9
It is possible to provide a continuous service by previously transmitting to No. 1. In addition, it is possible to prevent deterioration of service quality due to service interruption.

Similarly, the radio base station 9 has the same configuration as that of FIG.
In the case where the wired transmission line network 84 exists between the wireless base station 9 and the server 54 and is connected to the wired transmission line network 84 via the wireless base station 9 and the server 54 gateway 83, similarly, the buffer 91 is connected to the wireless terminal device. By providing information for the service interruption time to the buffer 91 in advance in No. 1, it is possible to provide continuous service. In addition, it is possible to prevent deterioration of service quality due to service interruption.

Furthermore, when wireless is used for transmitting and receiving information between the server 54 and the wireless base station 9 as in the configuration of FIG. 19, the server 54 as in the configuration of FIG.
Even when the wireless base station 9 and the wireless base station 9 are connected to the wired transmission line network 86 such as ISDN, the same operation can be performed, and the buffer 91 is provided in the wireless terminal device 1 to provide information for the service interruption time. By transmitting to the buffer 91 in advance, it is possible to provide continuous service, and it is possible to prevent deterioration of service quality due to service interruption.

In the case where the service received via the wireless base station is interrupted due to the wireless terminal device 1 moving to a dead zone of the radio wave from the wireless base station or the like, the service is temporarily suspended. You can save 1 power,
An example in which the service can be immediately received when the user escapes from the dead zone of the radio wave will be described as a seventh specific example.

(Seventh Concrete Example) In this concrete example, transmission / reception is performed between a radio base station having a transmitting / receiving means for transmitting information and a buffer for accumulating information to be transmitted, and the radio base station. And a server for storing information and transmitting / receiving information to / from the wireless terminal via the wireless base station. In the case where the wireless terminal needs to maintain the state of the service when the service is interrupted due to intrusion of a dead zone of radio waves or the like, a power supply of a function unnecessary for retaining the state of the service. It has a function to turn off.

In this specific example, since unnecessary power is turned off when the service is interrupted, it is possible to reduce power consumption, and the power necessary for restarting reception is turned on so that a dead zone of radio waves can be avoided. You will be able to receive service immediately when you escape.

In this system, when the radio wave insensitive zone is entered, the power source of each element is controlled as shown in FIG. The configuration used in the seventh specific example is the same as in the configuration diagram of the fifth specific example. In addition, each functional element can be individually controlled in power supply.

In the seventh specific example, the wireless terminal device 1
When the service is interrupted due to intrusion into a dead zone or the like and the service is suspended, the control unit 2 turns on only the power of the functional elements required for the suspended state as shown in FIG. Control the element to power off.

Therefore, it is possible to reduce the power consumption by turning off the unnecessary power when the service is interrupted. Note that this specific example is based on the wireless base station 9 and the server 54.
Are on different wired transmission lines, and these wired transmission lines are connected via the router 8, the wired transmission line network 84 also exists between the wireless base station 9 and the server 54, and the wireless base station 9 and the server 54 are also connected to the wired transmission line network 84 via the gateway 83, the wireless base station 85 is also connected to the server 54, and the information between the server 54 and the wireless base station 9 Even when wireless is used for transmission / reception, or when the server 54 and the wireless base station 9 are connected to a wired transmission line network 86 such as ISDN, the same operation can be performed and power consumption is reduced. can do. Although various specific examples have been described above, the present invention is not limited to these specific examples, and various modifications can be implemented.

[0119]

As described above in detail, the communication system of the present invention can supply unnecessary power to the state, and can also perform the interruption process when the service is interrupted so that unnecessary retransmission can be omitted. By doing so, power consumption can be reduced without impairing service quality.

[Brief description of drawings]

FIG. 1 is a configuration diagram and an operation transition diagram showing a first specific example of a communication system according to the present invention.

FIG. 2 is a diagram for explaining a first specific example of a communication system according to the present invention.

FIG. 3 is a configuration diagram and an operation transition diagram showing a second specific example of the communication system according to the present invention.

FIG. 4 is a configuration diagram showing a third specific example of a communication system according to the present invention.

FIG. 5 is a diagram for explaining a third specific example of the communication system according to the present invention.

FIG. 6 is a diagram for explaining a third specific example of the communication system according to the present invention.

FIG. 7 is a diagram for explaining a third specific example of the communication system according to the present invention.

FIG. 8 is a diagram for explaining a fourth specific example of the communication system according to the present invention.

FIG. 9 is a diagram for explaining a fourth specific example of the communication system according to the present invention.

FIG. 10 is a diagram for explaining a fourth specific example of the communication system according to the present invention.

FIG. 11 is a diagram for explaining a fourth specific example of the communication system according to the present invention.

FIG. 12 is a diagram for explaining a fourth specific example of the communication system according to the present invention.

FIG. 13 is a diagram for explaining a fourth specific example of the communication system according to the present invention.

FIG. 14 is a diagram for explaining a fourth specific example of the communication system according to the present invention.

FIG. 15 is a diagram for explaining a fifth specific example of the communication system according to the present invention.

FIG. 16 is a diagram for explaining a fifth specific example of the communication system according to the present invention.

FIG. 17 is a diagram for explaining a fifth specific example of the communication system according to the present invention.

FIG. 18 is a diagram for explaining a sixth specific example of the communication system according to the present invention.

FIG. 19 is a diagram for explaining a sixth specific example of the communication system according to the present invention.

FIG. 20 is a diagram for explaining a sixth specific example of the communication system according to the present invention.

FIG. 21 is a diagram for explaining a sixth specific example of the communication system according to the present invention.

FIG. 22 is a diagram for explaining a sixth specific example of the communication system according to the present invention.

FIG. 23 is a diagram for explaining a seventh specific example of the communication system according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Wireless terminal device 2 ... Control part 3 ... Battery remaining amount sensor 4 ... Battery 5 ... Transmission / reception circuit 6 ... Battery remaining amount signal 7 ... Power supply operation signal and transmission / reception signal 8 ... Wireless antenna 9 ... Wireless base station 10 ... Wireless antenna 51 , 91, 883 ... Buffer 52 ... Network 53 ... Node 54 ... Server 81 ... Wired transmission line 82 ... Router 83 ... Gateway 84 ... Wired transmission line network 85 ... Wireless base station 86 ... Wired transmission line network 92 ... Auxiliary power supply 811, 881 ... Transmitting / receiving circuit 812, 882 of radio base station ... Control unit of radio base station.

Claims (9)

[Claims] 1. A wireless terminal device having a transmission / reception means for transmitting / receiving information to / from a wireless base station, wherein power supply to a functional element unnecessary for performing the service is controlled to be turned off in accordance with the service content. A characteristic wireless terminal device. 2. A wireless terminal device using a battery as a power source and having a transmitting / receiving means for transmitting / receiving information to / from a wireless base station, wherein the transmitting / receiving means is divided into a power system for a transmitting system and a power system for a receiving system. And a control means for controlling the opening and closing of the power supply system,
A means for measuring the remaining battery level is provided, and when there is information to be transmitted / received to / from the wireless base station, the control means causes a power supply for each system of the transmitting / receiving means according to the remaining battery level of the terminal. A wireless terminal device, characterized in that power consumption of a terminal is controlled by controlling opening and closing of a system. 3. A wireless terminal device having a transmitting / receiving means for transmitting / receiving information to / from a wireless base station, wherein the functional elements of the wireless terminal device are configured to be separately supplied with power, and the wireless base station A wireless terminal device, comprising means for controlling power supply so as to turn off the power supply of an unnecessary functional element when information is exchanged. 4. A radio base station having a transmission / reception means for transmitting information, a transmission / reception means for transmitting / receiving to / from the radio base station, and a circuit for controlling the power supply of the transmission / reception means. In a communication system comprising a wireless terminal device and a server having means for transmitting / receiving information to / from the wireless terminal device via the wireless base station, communication quality and battery level between the wireless terminal device and the server A communication system characterized by mutually reporting information such as, and setting the transmission speed, transmission method, and power supply control method according to the contents. 5. A radio including a radio base station having a transmitting / receiving means for transmitting information and having a buffer for accumulating information to be transmitted, and a radio transmitting / receiving means for transmitting / receiving between the radio base station. In a communication system comprising a terminal device and a server that stores information and transmits / receives information to / from the wireless terminal device via the wireless base station, the wireless base station is a transmission condition such as a transmission rate from the server. By receiving the information and the reception condition information such as the remaining battery level from the wireless terminal device, the transmission rate between the server and the wireless base station and between the wireless base station and the wireless terminal device is controlled. Communications system. 6. The communication system according to claim 5, wherein the radio base station gives transmission condition information and reception condition information,
A communication system, which is configured to perform control for absorbing a difference in transmission rate from the wireless terminal device. 7. A wireless base station comprising a transmitting / receiving means for transmitting information and a buffer for storing information to be transmitted, a wireless terminal device having a transmitting / receiving means for communicating with the wireless base station, and storing information. In addition, in a communication system including a server that transmits and receives information to and from the wireless terminal via the wireless base station, a unit that determines a possibility of the information transmission being interrupted, and this determining unit predicts a service interruption. In this case, it is provided with a control function for judging the termination or interruption of the service currently being executed among the wireless terminal device, the server and the user, and in the case of the temporary interruption of the service, restarting the service when the service is restored Characterized communication system. 8. A radio base station comprising a transmission / reception means for transmitting information and a buffer for accumulating information to be transmitted, and a transmission / reception means for transmitting / receiving between the radio base station and the received information. In a communication system including a wireless terminal device including a buffer and a server that stores information and transmits / receives information to / from the wireless terminal device for service via the wireless base station, the information transmission is interrupted. And a service for determining a possibility that the service of the wireless terminal device is temporarily suspended by the service disruption condition determining means, the service is provided to the service at a higher transmission rate before the service is disrupted. Information is accumulated in the buffer, and the service is continued by utilizing the accumulated information in the buffer during the interruption period. Shin system. 9. A radio base station comprising a transmitting / receiving means for transmitting information and a buffer for accumulating information to be transmitted, and a transmitting / receiving means for transmitting / receiving between the radio base station and a power supply for circuit elements. In a communication system comprising a wireless terminal device having a means for controlling, and a server that stores information and transmits / receives information to / from the wireless terminal device via the wireless base station, the wireless terminal device In the case where the service is temporarily interrupted due to intrusion into a dead zone or the like, the power supply of the circuit element having a function unnecessary for maintaining the state of the service of the wireless terminal device is controlled to be turned off. Communications system.