JPH08275243A - Wireless communication system and wireless terminal device - Google Patents

Abstract

PURPOSE: To acquire required information without any specific notice by adopting the configuration such that information on request is automatically acquired when a portable terminal equipment enters an area enabling communication with a radio base station. CONSTITUTION: The user enters a desired information item to a terminal equipment 4. The terminal equipment 4 detects the entrance of a communication area. The terminal equipment 4 makes an automatic call to a base station 2 to request the allocation of a radio channel. The base station 2 allocates the radio channel to set up a radio channel. Then the terminal equipment 4 reads an item of the acquisition request of information entered by the user from its own built-in memory and sends the information to an information service station 3 via a communication network 1. Then the information service station 3 sends a reply retrieval result to the terminal equipment 4 with respect to the question retrieval item made by the user via the communication network 1 and the base station 2. The terminal equipment 4 confirming the acquisition of the information makes interrupt procedure of a radio channel to 5 the communication network 1. Then the terminal equipment 4 reports the end of information acquisition to the user.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system and a wireless terminal device in which information is acquired by a portable wireless terminal via a wireless line.

[0002]

2. Description of the Related Art A conventional information providing service by wireless communication (for example, a database search system) aims to provide a real-time service anytime, anywhere. To receive this service, for example,
You need a mobile phone and a personal computer.

FIG. 28 shows a conventional service system in which a cellular phone and a personal computer are combined to wirelessly receive information provision. In the figure, 401 is a communication network (network), for example, a wired communication network. Reference numeral 402 is a base station (wireless base station) for mobile phone services, 403 is a data terminal, for example, a personal computer, which is capable of data communication with a mobile phone and a built-in modem, and 405 is a service area. This is the area where wireless communication is possible.

Although the service area of the mobile phone is very wide, there are some areas that are out of the service area depending on the topography and the arrangement conditions of the base stations. In FIG. 28, the area 405 is covered by the wireless base station 402 connected to the communication network 401. The terminal 403 is located outside the service area, and in order to receive information provision from this terminal, it must first move to the service area.

Now, the user who has the terminal 403 of A sees the terminal 403 while watching the received electric field strength display of the mobile phone.
To move. By moving, terminal A 403 becomes 4
The position is 04, and the inside of the service area 405 is entered. Here, communication with the base station 405 becomes possible for the first time, and the user accesses the information database via the communication network 401 and starts acquisition of information.

[0006] Here, assuming that the user using the movable portable terminal demands real-time information on the spot, an effort is made to expand the communicable zone. It is made by the operator.

However, the information required by the user is not all information that requires real time, and there are some with high urgency and many with low urgency.

[0008] In the case of acquiring information of low urgency, since the user wants to use the information later, when the user moves to a service area where wireless communication is possible, or when he / she thinks of acquiring information, he / she will be aware of it. It should also be an important service to perform an operation for acquiring the information and eliminate the trouble of receiving information.

However, under the present circumstances, an environment in which such annoyance can be eliminated has not been established.

[0010]

In the above conventional example, when the user tried to acquire information, the terminal had to be moved to the area where wireless communication is supported. And since the currently provided information communication system by wireless communication does not have a large amount of information, even a service using a low-speed line could be sufficiently supported, but as multimedia attracted attention,
There has been an increasing demand to be able to exchange vast amounts of data at high speed.

For example, since it is possible to handle moving image information having an enormous amount of data and information for one magazine, such as a portable information terminal supporting multi-functions and multimedia, Inevitably, large capacity transmission is required. It is difficult to provide large-capacity transmission in an extremely wide area like the current mobile phone system because of limited frequency resources and the need to install many base stations for high-speed transmission. is there.

Therefore, it is necessary to overcome this. In addition, since the terminal is carried and used by individuals, it must be small and lightweight, and for that purpose, it is necessary to promote power saving, which is an important factor for determining these. That is, for a portable terminal, the power source is mainly a battery, which has a large specific gravity in terms of volume and weight.

Therefore, the object of the present invention is to
First, by simply setting the request for the desired information in advance, when the user moves to the area where the information can be acquired, the information is automatically transmitted and the information can be acquired. It is an object of the present invention to provide a wireless communication system capable of acquiring necessary information without being particularly conscious of it.

A second object of the present invention is to provide a wireless communication system capable of saving electric power and being small and lightweight.

[0015]

In order to achieve the above object, the present invention is as follows.

[1] In order to achieve the first object, the present invention firstly provides a communication network, a wireless base station connected to the communication network, an information providing station connected to the communication network, and a portable terminal. In a wireless communication system in which the communication network and the portable terminal are connected by a wireless line via a wireless base station, an area in which the portable terminal can wirelessly communicate with the wireless base station. When the portable information terminal is used to acquire information from the information providing station, the user of the terminal makes an information acquisition request to the terminal at an arbitrary time, and the portable information terminal The type terminal automatically acquires the requested information when it enters the area where it can communicate with the wireless base station.

[2] In order to achieve the first object, the present invention secondly comprises a communication network, a wireless base station connected to the communication network, an information providing station connected to the communication network, and a portable terminal. In the configured system, the communication network and the portable terminal are connected by a wireless line via one or more wireless base stations, and the wireless base station and the portable terminal have a first transmission rate. A first downlink for performing transmission, and a second downlink for performing transmission at a second transmission speed that is higher than the first transmission speed,
At least an uplink wireless transmission line that performs transmission at a transmission rate equivalent to the first transmission rate is provided, and the communicable area of the first downlink and the uplink is greater than the communicable area of the second downlink. In a wide wireless communication system, a means for detecting that the portable terminal has entered the area where the second downlink can communicate is provided, and information is acquired from the information providing station using the portable terminal. In this case, the user of the terminal makes an information acquisition request to the terminal at an arbitrary time, and the portable terminal enters the requested information when it enters the communicable area of the second downlink. The feature is that it is automatically acquired through the line.

[3] In order to achieve the first object, thirdly, in the above-mentioned second configuration, the portable terminal sends an information acquisition request from a user to a second downlink communicable area. It is characterized in that the network is notified using the uplink and the first downlink regardless of whether or not it is located.

[4] To achieve the first object, fourthly, in the above-mentioned second configuration, the portable terminal is characterized in that the information is also acquired by the first downlink.

[5] In order to achieve the second object, a receiving circuit for receiving a radio transmission wave having a first transmission speed, and the first circuit
A transmission / reception circuit that transmits and receives a wireless transmission wave at a second transmission speed that is lower than the transmission speed, and a wireless transmission wave that is received at a third transmission speed that is lower than the second transmission speed. A receiving circuit and a receiving circuit for the wireless transmission wave of the first transmission speed and a transmission / reception of the wireless transmission wave of the second transmission speed according to the information of the signal received by the receiving circuit of the wireless transmission wave of the third transmission speed. In a wireless terminal device comprising a control means having a function of turning on / off the power supply of a circuit, when a reception at the first and second transmission rates is in a standby state, a third terminal
Only the receiving circuit of the wireless transmission wave having the transmission speed of 1 is set to the operating state, and the transmitting and receiving circuits of the wireless transmission wave of the first and second transmission rates are set to the power-off state and kept in the inactive state. To do.

[6] In order to achieve the second object, a receiving circuit for receiving a radio transmission wave having a first transmission speed, and the first circuit
And a transmission / reception circuit that transmits and receives a wireless transmission wave of a second transmission speed lower than the transmission speed of the first transmission speed, and that the wireless terminal device can receive the wireless transmission wave of the first transmission speed. And a power supply control unit having a function of turning on / off the power supply of the receiving circuit for the wireless transmission wave at the first transmission speed by the detection means, at the first transmission speed. In the area where the communication service is not provided, the power of the receiving circuit for the wireless transmission wave at the first transmission speed is turned off, and in the area where the communication service at the first transmission speed is provided, the detection means is within the service area. When the presence is detected, the power supply is turned on to perform reception at the first transmission rate.

[7] In order to achieve the second object, a receiving circuit for receiving a radio transmission wave having a first transmission speed, and the first circuit
A transmission / reception circuit for transmitting and receiving a wireless transmission wave at a second transmission speed lower than the transmission speed of the second transmission speed, and reception of the wireless transmission wave at the first transmission speed according to reception information at the second transmission speed And a power control unit having a function of turning on and off a power supply of a circuit, wherein the power control unit is configured to operate at the second transmission rate immediately before reception service is provided at the first transmission rate. The identification signal transmitted to the wireless terminal device activates the receiving circuit for the wireless transmission wave at the first transmission rate, and immediately after the reception service at the first transmission rate is completed, the wireless transmission wave at the first transmission rate is generated. It is characterized in that the receiving circuit of is stopped.

[8] In order to achieve the second object, there are one or a plurality of small wireless zones that provide communication services to mobile terminals and a large wireless zone that provides communication services in a wide area. In a wireless communication system having a zone configuration in which the transmission rate of data transmitted by the zone is higher than the transmission rate of data transmitted by the large wireless zone, and the large wireless zone covers the small wireless zone, the mobile terminal is Each has a receiver for the small wireless zone, and also has a measurement discriminating means for measuring and discriminating the electric field strength. Normally, the receiver for the small wireless zone is turned off, and the measuring discriminating means is provided for the large wireless zone. When it is determined from the electric field strength that the signal from the device has reached the level at which it can be received, the receiver that receives the message in the large wireless zone is turned on. It is characterized by the following.

Furthermore, a large radio zone is included in the zone.
When a message indicating the presence or absence of a small zone is broadcast, the mobile terminal sends a message in the large wireless zone when it receives a message indicating that a small wireless zone exists at the radio in the large wireless zone. It is characterized in that the power of the receiving receiver is turned on.

[0025]

In order to achieve the first object, the above [1]
By adopting the configuration of [4], the following actions and effects are obtained.

A user accessing a database does not always want to get information in real time. For example, I would like to know the contents of the morning edition of the day when I come to the office, but I do not need that information from the time I leave the house until I head to the station, but rather while waiting for the train at the station or on the train. It will be.

The user inputs required information to the terminal at any time when he / she wants the information. The terminal stores in advance data about what information can be acquired,
Make sure the requested information is accessible and notify the user if possible. The user ends the terminal operation when the registration is completed.

The terminal observes whether it is located in an area where wireless communication is possible. As an example of the observation, a method of outputting a specific frequency carrier from the base station side, observing the carrier frequency, and performing carrier sense whether the carrier has a predetermined electric field strength or higher can be given.

When the terminal detects that it has entered the area where wireless communication is possible, it automatically makes a call and establishes a wireless communication line. The terminal notifies the communication network that there is an information acquisition request, and transmits the requested item. The communication network transmits request items and the like to the information providing station, and wirelessly transmits the request information from the information providing station to the terminal. The terminal notifies the user that the information acquisition is completed by a lamp or a buzzer.

In this way, when it is detected that the terminal has entered the area where wireless communication is possible, a call is automatically made to establish a wireless communication line and notify the communication network that there is an information acquisition request. Then, the request item is transmitted to the communication network side, and the communication network transmits the request item and the like to the information providing station, and the information provided from the information providing station according to this request is wirelessly transmitted to the terminal. A wireless communication system can be obtained in which the user can receive necessary information without being aware of the wireless service area. Second
In order to achieve the object, the following actions and effects are obtained by adopting the configurations of [5] to [7] described above.

The battery saving method of the above-mentioned [5] is operated with a low power consumption receiving circuit which operates steadily, an on / off part of the power source of the receiving circuit which operates with wideband waves, and an intermediate band wave. The wireless terminal device is provided with an ON / OFF unit for the power supply of the transmission circuit and a power supply control unit for controlling the ON / OFF of the power supply of the wideband wave reception circuit or the medium band wave transmission / reception circuit based on the information received by the low power consumption reception circuit. If the information from the narrow band wave receiving circuit requires wide band wave reception, the wide band wave receiving circuit is powered on, and if not, it is turned off.

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.

Although narrow band signals can be transmitted at low frequencies, high frequencies are used for wide band signals.
The transmission rate of the narrow band signal is 1 to 2 kbps, the medium band signal is 32 kbps, and the wide band signal is 155 Mbps. Narrow band signals can be transmitted in the several hundred MHz band, but it is difficult for wide band signals to use this band because other communication cannot be performed at all.
There is no choice but to use millimeter wave bands such as bands. Due to the above relationship between bandwidth and frequency, reception of narrowband signals can be performed with extremely low power, and reception of wideband signals requires large power.

In the battery saving method of the wireless terminal device of the present invention according to the first aspect of the invention, the receiving circuit for the narrow band wave is operated for normal calling, and the power supply for the transmitting and receiving circuit for the wide band wave and the medium band wave is turned off. When the ringing signal of the terminal is detected in the narrow band wave receiving circuit, the power supply control unit turns on the power of the wide band wave receiving circuit and the medium band wave transmitting / receiving circuit, and receives the wide band wave and the middle band wave. Performs wave transmission / reception operations. When the communication with the wide band wave or the medium band wave is completed, the power of the wide band wave receiving circuit or the medium band wave transmitting / receiving circuit is turned off again. According to the present invention, only the narrow band signal is used for the reception in the standby mode, so that only the reception circuit for the narrow band wave can be operated in the standby mode, and the power consumption can be suppressed to save the battery.

In the above-mentioned constitution [6], the means for detecting whether or not the broadband wave communication service can be used is normally operated, and the wide band wave receiving power supply is turned off. When it is detected that the reception is possible, the power supply control unit turns on the power supply of at least the wideband wave reception circuit to perform the wideband wave reception operation. After the reception of the wideband wave is completed, the power supply control unit turns off at least the power supply of the wideband wave reception circuit. In the present invention,
The power supply of the wideband reception circuit is turned off when wideband service is not being performed, and the wideband detection means uses a method that consumes less power, enabling battery saving without compromising service quality. Become.

In the battery saving system of the above-mentioned [7], the receiving circuit for the medium band wave is normally operated and the receiving power source for the wide band wave is stopped. If a code indicating the start of wideband wave reception is detected in the received information for the medium band wave, the power supply control unit will receive the wideband wave reception. The circuit power is turned on and wideband reception is performed. When the reception of the wideband wave ends, the power supply control unit stops the power supply of the wideband wave reception circuit. According to the present invention, when the broadband wave information is transmitted intermittently, the power supply of the broadband wave receiving circuit is stopped while the broadband wave information is not transmitted, which enables battery saving without impairing the service quality. Become.

According to the above configuration [8], the high-speed data receiver, which consumes a lot of power, turns on the power only when it enters the large wireless zone including the small wireless zone. Saving can be realized. Therefore,
The standby time of the mobile terminal can be extended.

[0038]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.
First, without the user being aware of the wireless service area,
An embodiment of a wireless communication system capable of receiving necessary information will be described.

In order to effectively utilize radio resources, the present invention is
Effective when applied to communications in general. However, since it is particularly effective in the wireless communication system proposed by the inventors of the present application from the viewpoint of effectively utilizing the wireless resources of the multimedia, this system will be described first.

The inventors of the present invention are capable of high-speed communication and effective use of frequencies, and are compact and compact for the user's portability and practical convenience. From the perspective of enabling the use of highly functional portable wireless communication terminals, the transmission speed of the downlink from the base station to the terminal is higher than that of the uplink from the terminal to the base station by one digit or more. , Proposed a wireless communication system (SDL system) having an asymmetric transmission rate (see, for example, Japanese Patent Application No. 6-137621).

This SDL system is as shown in FIG. 1, and there is a radio base station BS connected to the public network, and each radio base station BS has a downlink R1 having a wide frequency band and a narrow frequency. Uplink R2 with bandwidth
With. In each radio base station BS, the radio communication terminal termin in the service area A in which communication is possible by this downlink R1
wireless communication terminals in each service area A, including mobile wireless communication terminals (mobile terminals) that can communicate with al using the downlink R1 and the uplink R2, and public networks.
Information can be exchanged with terminals and databases connected to the Network.

Here, the wireless communication terminal carried by each person is generally a personal-use machine in which one person inputs and outputs. Therefore, a transmission capacity and a method that match the amount of information transmitted and received by one individual are required. In addition, since individual people carry it, such wireless communication terminals for individuals are naturally required to be small and lightweight, and to save power so as not to carry extra heavy batteries. To be done.

Considering the use of a wireless communication terminal carried by individuals, for example, in the case of multimedia, the terminal can watch movies, listen to music, shop, use databases, make phone calls, and write documents. Transfer, sales data and reservation data transmission, ticket reservation, acquisition of information on mass media such as magazines and newspapers (reading etc.), etc. Of these, it is necessary to send voice and documents from the terminal side to the base station Data, reservation data, commands, etc.,
These can be suppressed to several kilobits per second by using a data compression technique together, and high speed transmission is not required so much.

On the other hand, it is the image data in the case of a movie (moving image) that needs the highest speed transmission, and it is only from the base station side that such a large amount of data needs to be transmitted at a high speed. From the viewpoint of effective utilization of the frequency band, the downlink from the base station side, that is, only the downlink is wideband, and the uplink from the terminal side to the base station (uplink to the base station side is In the link, it is sufficient if a transmission line with a narrow band (that is, low speed transmission) can be secured.

Therefore, in the SDL system, as described above, the basic configuration of the wideband downlink and the narrowband uplink is adopted.

The relationship between the wireless communication base station BS and the mobile terminal capable of wireless communication in this SDL system will be described in more detail. The wireless communication base station BS and the mobile terminal, which is a mobile terminal within the service area A capable of wireless communication, have a broadband downlink line R1 from the base station BS to the mobile terminal as a wireless line between them, and the mobile terminal. To base station B
A narrow-band upstream line R2 to S is provided, and these lines can communicate with each other.

In the SDL system, information is transmitted in a wide band (for example, 100 Mbps or more) in the downlink R1. Therefore, in order to realize the SDL system by radio transmission by radio waves, it is necessary to secure a frequency bandwidth of 100 MHz or more (however, this is when multi-value modulation is not performed). The lower the frequency of the radio wave, the less likely it is to hinder communication even with the presence of obstacles, so I would like to use the low frequency band, but the low frequency band has already been assigned to various other uses. I can not use it.

Therefore, as a suboptimal measure, it is preferable to use the microwave band, but in the microwave band, it is a problem that one user occupies an extremely wide bandwidth of 100 MHz or more. , Not realistic.

Therefore, in order to secure a bandwidth of 100 MHz or more, it is necessary to use a quasi-millimeter wave band or a millimeter wave band having high directivity, or to use infrared rays having no limitation on frequency width and the like.

When the quasi-millimeter wave band, the millimeter wave band, or infrared rays are used, it is necessary to communicate in line of sight, and the attenuation also increases corresponding to the propagation distance, so that it is also realized from the viewpoint of energy saving. Various difficult questions remain.

Further, since the broadband downlink R1 is used within the line of sight, the service area is narrow, and it is difficult to expand the service area densely over a wide range. Therefore, a downlink with a narrow frequency band is added in consideration of servicing a wide range. Since the added downlink has a narrow frequency band, the transmission speed is only about several tens of Mbps, but the band is narrow, so that the microwave band can be used and the service area is wide.

Therefore, in the present invention, when a wide frequency band in a limited narrow region is entered, the information providing station side receives the transmission of information desired by the user, so that the user can obtain the necessary information without being aware of it. An example of enabling information to be received is described below.

In the present invention, basically, it is possible to achieve power saving on the premise that communication is performed with line-of-sight, and it is possible to automatically acquire necessary information while securing the degree of freedom (mobility) of the terminal. For the purpose of doing so, it was carried out as follows.

(First Embodiment) FIG. 2 shows a first embodiment of the present invention. Fig. 3 shows the procedure up to the acquisition of information by the user / terminal / communication network.

This wireless communication system includes a communication network 1, an information providing station 3 connected to the communication network 1, and a wireless base station 2.
And a portable wireless terminal 4. The user uses the mobile terminal 4 to acquire information from the information providing station 3 via a wireless line. The information providing station 3 may be a functional element that performs a database service or the like, a system that provides movies, articles that are provided by mass media such as magazines and newspapers, and the like to subscribers. The terminal 4 can communicate with the base station 2 within the area 6 covered by the wireless base station 2, and cannot communicate with the outside.

It is assumed that the user now wants information outside the service area 6. At this time, the terminal 4 is in the position A. The user inputs the desired information item into the terminal 4 (step S1). The terminal 4 stores the items input by the user in its own built-in memory. The user who has completed the input keeps the terminal 4 in his pocket or bag and carries out daily life.

The terminal 4 carries out carrier sense of a predetermined frequency and observes whether or not it is in the service area 6 covered by the radio base station 2. When the user moves with the terminal 4 while commuting or going out, the terminal 4 enters the service area 6 covered by the base station 2. In FIG. 2, the position 5 indicates the position of the terminal 4 that has entered the service area 6.

The terminal 4 detects that it has entered the communication area (step S2). The terminal automatically makes a call to the base station 2 and requests wireless channel allocation (step S
3). The base station 2 allocates a wireless channel (procedure S4), whereby the wireless line is established.

In addition to this, there are many procedures for establishing a wireless line in various wireless protocols (terminal authentication, billing, location registration, etc.), but they are omitted because they do not affect the essence of the present invention.

The terminal 4 reads the item of the information acquisition request input by the user from the internal memory, and the communication network 1
The information is transmitted to the information providing station 3 via (step S5). In the information providing station 3, the answer / search result to the question / search item made by the user is sent to the terminal 4 via the communication network 1 and the base station 2.
(Step S6).

The terminal 4 which has confirmed the acquisition of the information performs a procedure for disconnecting the wireless line to the communication network 1 (procedure S7, procedure S).
8). The terminal 4 notifies the user that the information acquisition has been completed (step S9). This notification is made by turning on a buzzer or an LED.

As described above, the user inputs information to the terminal at any desired time, writes it in the memory, and automatically detects that the terminal has entered the communicable area, makes a call, and acquires information. By doing so, it becomes possible for the user to automatically obtain information without being aware of the communication area.

(Second Embodiment) A second embodiment will be described.

In the second embodiment, the date and time at which information is desired to be acquired can be designated.

In other words, when the user inputs an information item in the first embodiment, "date", "time", which becomes information about when the information should be acquired,
Information such as “time” is stored in the terminal 4 at the same time.

The information desired by the user may be meaningless if the information has a large delay depending on its type, and the value may not change even with some delay. For example, stock price information does not make sense if there is a delay, so immediacy is required, but
Information on shops does not change in a short period of time, and information on magazines is acceptable if it is delayed for several hours.

Therefore, when the user inputs an information item, the user may set the time until the information is acquired, or the terminal 4 may be provided with a function of discriminating the type of the information, and the information may be automatically set according to the type. Respond to be able to set the time. In order to realize this function, it is naturally necessary for the terminal 4 to have the function, the clock, and the calendar function.

When the terminal 4 cannot enter the communication area (service area 6) by the set time and cannot acquire information, it is configured to notify the user by using a buzzer or a display, The user is informed that other measures must be taken to obtain the desired information by the time the desired time is reached.

In this case, the user acquires information by resetting / extending the desired time, discarding the acquisition request, or moving to a service area where communication is possible.

As described above, the terminal 4 can set the time until acquisition.
It is possible to prevent unreasonableness of acquiring information that has become obsolete due to delay by performing the time management in advance for the terminal 4 and to acquire only the necessary information by the necessary time. It will be possible.

(Third Embodiment) The third embodiment relates to a method of connecting a mobile phone.

With a conventional mobile phone, dialing can be performed only after entering a communicable area and allowing the terminal to receive data. However, when he is outside the communication area, he cannot connect the line at all and cannot dial. A user who wants to communicate moves to a communicable area and makes a call based on the received electric field strength measurement value displayed on the mobile phone.

In order to eliminate this inconvenience, in this embodiment, if dialing is performed in advance, dial information is reserved in the mobile phone when the line connection cannot be established, and the mobile phone is the mobile phone which is the terminal 4 to realize this function. Equipped with memory,
Also, when the user performs a dial operation, the mobile phone (terminal 4) performs the calling procedure when the wireless communication is within the service area and performs the normal communication, but when it is out of the service area. The dialed number is stored in the built-in memory of the mobile phone, the dial is reserved, and thereafter, the mobile phone observes whether the mobile phone has entered the service area by its own carrier sense function or measures the received electric field strength. When a predetermined electric field strength or more is detected, it is detected that a communication area (service area) has been entered, and a function for automatically making a calling procedure according to the dial reservation is provided. Further, when the automatic call is made, a function is provided to notify the user that the automatic call operation is started at the time of starting the automatic call operation.

In this embodiment, a user carrying a mobile phone, which is the terminal 4, may perform a dial operation when communication is required. This does not matter whether the current position is inside or outside the wireless communication service area. At this time, if the terminal 4 is within the service area, the terminal 4 performs a calling procedure and performs normal communication. If it is out of the service area, the dialed number is stored in the memory built in the terminal 4 to notify that the dial reservation is made.

The user who has finished the dial operation moves while holding the terminal 4. It is not necessary to look at the electric field strength when moving. The terminal 4 observes whether it has entered the area by carrier sense or measures the received electric field strength, and detects that the terminal 4 has entered the communication area (service area) when the electric field strength exceeds a predetermined electric field strength. When entering the communication area, the terminal 4 automatically performs the calling procedure and simultaneously notifies the user that the calling is being performed.

According to this embodiment, it is not necessary for the user to dial while paying attention to where the communicable area is, and it becomes possible to make a call immediately after entering the communication area. In addition, since it is not necessary to check whether communication is possible, usability is dramatically improved.

(Fourth Embodiment) In the fourth embodiment, a user can acquire information without being aware of the communication area, and immediately after generation of certain information, the information is acquired. It is an embodiment that enables that.

A fourth embodiment will be described with reference to the communication procedure shown in FIG.

In the first embodiment, the information desired by the user is
If you enter it in the terminal in advance, the information providing side automatically transmitted information when the terminal entered the communication area, but if the information providing station does not have the information that the user wants, or The information may occur after the timely desire for the information.

For example, in the case of stock price information, when the stock price of a user becomes higher than a predetermined stock price, the price movement may be desired. As described above, the request information input by the user to the terminal may not be obtained even when the terminal enters the communicable area.

In this case, the communication network (information providing station) searches whether the terminal 4 is in the communication area (service area 6) when the information to be provided to the user is generated (step S21). Here, the communication network side has means for judging whether or not the terminal 4 is in the communication area. For example, the terminal side performs carrier sense, and when the communicable area is entered, the communication network side is notified.

When it is detected that the terminal 4 has entered the communication area (step S22), the terminal 4 is notified that information is being provided (step S23). In the present embodiment, for convenience of description, the procedure for establishing a wireless line such as frequency allocation and terminal authentication is omitted, but the line is naturally established after these steps are taken. The terminal 4 notified of the information generation transmits the detailed items of the information request to the communication network side (procedure S24) and receives the data from the communication network side (procedure S25). The terminal 4 that has completed the information acquisition notifies the user that the information has been acquired by a buzzer or LED.

Also in this embodiment, as in the first embodiment, the user can acquire the information without being aware of the communication area, and the information can be acquired immediately after the information is generated. Becomes

(Fifth Embodiment) FIG. 5 shows a fifth embodiment. The information providing station 16 that provides the user with necessary information is connected to the communication network 11 and provides information via the communication network 11 and a wireless line in response to an information request from the user. The base station 12 covers a wide area 14 (has a wide service area), and performs wireless transmission with a terminal through an up line and a down line 17 having a low transmission speed.

As an example, there is a PHS (second generation cordless telephone system; personal handy phone system). This system is equipped with upstream and downstream lines at a transmission rate of 32 kbps, and has two service areas.
It is about 00 to 500 m. In the following, this embodiment will be described as a PHS for a wide area / low speed line.

The base station 13 covers the spot-like area 15 and performs transmission through the downlink 18 having a high transmission speed. In the information providing system such as the present invention, the amount of information transmitted from the base station / communication network side to the terminal is very large, whereas the amount of information sent from the terminal to the communication network side is limited to the required items. Very few.

Therefore, a wireless communication system equipped with a high-speed downlink for use in transmitting such a large amount of information is an SDL (Super high-speed Down).
It has already been described that the Link system has been proposed (see Japanese Patent Application No. 6-137621).

Here, the high-speed downlink is several 10M to 155.
The transmission speed is about Mbps. This embodiment will be described below with the spot / high-speed downlink as SDL.

As shown in FIG. 29, the SDL is a base station 502.
Is a low-speed (low-speed transmission) upper / lower line 507 in area 5
Cover 05. The base station 503 covers the area 506 with a high-speed (high-speed transmission) downlink (SDL) 508. If the terminal 510 is located only on the low speed line,
Through the base station 502 using the low speed line 507, the communication network 5
01 is connected. If the terminal 510 is in a position where it can communicate not only on a low-speed line but also on a high-speed downlink, and if there is a large amount of downlink information that occurs when accessing a database, the information is acquired using the SDL line 508.

The present invention is applied to the SDL system as described above. FIG. 6 shows the procedure of information acquisition by the user, terminal, and communication network.

When the user wants information, the terminal 510
Enter information request / request items etc. into. When the terminal is located in the area 506 where the SDL line 508 can be used, it is possible to immediately open the communication line and acquire information, but it is impossible when the terminal is outside the area.

Now, it is assumed that the low speed up and down lines provided by the base station 502 are based on PHS, and the light flux lines provided by the base stations 503 and 504 are SDL lines.

When the terminal is outside the area 506 (A)
think of. In this case, the user inputs a request item to the terminal 510 (step S31). The terminal 510 transmits the request item using the PHS to the PHS base station 502 (step S32). The base station 502 notifies the information providing station of the request item via the communication network 11.

The information providing station verifies whether the notified request items match the contents of the information providing, and the items of information, contents, summaries, etc. of the information to be provided to the terminal 510 are transmitted via the communication network 401. To notify the terminal 510 (step S33). At this time, the ID (identification code) of the information providing station
And the serial number of the information you are providing to this user.

The terminal 510 displays the contents shown by the information providing station to the user on the display of the terminal and requests confirmation (step S34). If the user agrees on the provided content, the user inputs the confirmation and approval of the content to the terminal 410 (step S35).

The terminal 510 sends a confirmation notice to the information providing station via the communication network 401 (step S36). The communication network 401 notifies the terminal 510 to enter the standby state for information acquisition (step S37). Next, the terminal 510 notifies the user that the information acquisition standby has been entered (step S).
38).

When the user enters the standby mode, he or she can put the terminal 510 in a bag or pocket and perform daily work.

The terminal 510 enters a standby state for detecting whether or not it is in the SDL area. The means for discriminating whether or not it is in the SDL area is to transmit a pilot carrier dedicated to the SDL area to the base stations 503 and 504 so that the terminal performs carrier sense and discriminate, or a specific signal transmitted by the base stations 503 and 504 at the terminal. A method of receiving may be considered.

As the user moves, the terminal 510 changes the SDL
It is assumed that the area 506 is entered. The terminal 510 detects that it has entered the SDL area by carrier sense (step S39).

The terminal 510 automatically notifies the communication network 140 that it has entered the high speed area using the PHS line (step S310). At this time, at the same time, the communication network 401 is notified of the ID of the terminal itself, the ID of the information providing station that has requested the information provision, the serial number of the information that is requested, and the like.

The communication network 401 transmits these to the information providing station. Request information reserved in advance from the information providing station is sent to the terminal 51 by the SDL line 508 via the communication network.
0 (step S41). The terminal 510 stores the received information in the memory built in the terminal. The terminal 510 that has received the information notifies the user that the information has been acquired by a buzzer or an LED display (step S4).
2).

The user inputs a request for information display to the terminal 510 at an arbitrary time when he wants to see information (step S42). The terminal 510 to which the display request is made displays the information stored in the built-in memory (step S44).

Since the amount of information provided by the information providing station is very large, it takes a very long time to transmit the PHS line. Here, SDL line and P
The transmission speed ratio of the HS line is assumed to be 1000: 1. If the amount of information to be transmitted is the amount of information that can be transmitted in 10 seconds using the SDL line, 10,000 seconds / in the case of using the PHS line
It will take less than 3 hours. Therefore, information transmission using only the PHS line is not practical.

Therefore, in this embodiment, the information acquisition reservation is made using the PHS line, and after entering the SDL area, the information is automatically transmitted to the terminal 510. This makes it possible to provide information in which images and sounds are mixed, and the user can acquire information without being aware of the SDL area.

(Sixth Embodiment) A sixth embodiment will be described.

In the fifth embodiment, the information is transmitted using the SDL line regardless of the type of the information. However, some information obtained from the information providing station has a relatively small amount of information depending on its type.

In this embodiment, the information providing station divides the information into two layers. One is primary information with a sufficient amount of information that can be transmitted by PHS, and the other is secondary information that takes a very long time unless transmitted by SDL.

The primary information is text data or the like showing an outline of the information, and the secondary information includes detailed drawings and moving images.

Among the information requested by the terminal, the information providing station and the communication network immediately transmit only the corresponding primary information to the terminal using the PHS line. The terminal displays the received information to the user. If the user can get the information he / she wants from only the primary information, that means the communication network /
Notify the information providing station and terminate communication. If the user wants more detailed information, he / she informs the communication network / information provider of that fact and acquires information using the SDL line.

A great deal of primary information can be provided as information to be provided. In this case, if information is provided using the SDL line, extra communication will be performed, and efficient use of frequency is hindered. Therefore, the terminal consumes useless power.

By providing the primary information using the PHS line, the user can quickly obtain the information, and
By providing the secondary information using the SDL line, it becomes possible to provide information such as moving images and high-definition images.

In this case, in the terminal, in addition to displaying the primary information on the screen, a display asking whether to obtain detailed information using the SDL line (button in window system)
If the terminal is provided so that the terminal automatically enters the standby state for receiving the SDL area by clicking the display, the user's operation becomes simpler.

(Seventh Embodiment) A seventh embodiment will be described.

In the sixth embodiment, the information providing station fixedly determines in advance the primary information transmitted by PHS and the secondary information transmitted by SDL. In this case, the secondary information cannot be received unless the SDL area is crossed at all.

Therefore, in this embodiment, time, PHS / SD
All L line usage fees and the like are converted into costs, and information is transmitted on both the PHS and SDL lines so as to minimize the cost.

For example, in the secondary information, the degree of importance is finely divided according to the type of the information. If a rough image can be used as the image information, it may take a while P
It is also possible to transmit by HS.

When the user desires to acquire the secondary information,
The information providing station sequentially calculates the cost and provides the information by dividing it by PHS and SDL so as to minimize the cost. The cost of the highly important information is set to increase with the passage of time, and the usage fee of the PHS line is weighted with the passage of time to regard it as the PHS cost.

As a result, when time has elapsed and the secondary information cannot be transmitted without the terminal entering the SDL area, the part of the secondary information having high importance is transmitted to the terminal via the PHS. Displayed to the user.

The cost is calculated as in this embodiment, and the PH
By separating the information to be transmitted in S and SDL, the user can always obtain effective information.

FIG. 7 and FIG. 8 show an embodiment showing the installation location of the SDL area (service area by SDL). In the above example, assuming that the user moves,
Information cannot be provided without passing through the SDL area due to movement. This problem is solved by setting the SDL area at a place where the user has a high probability of passing along with the movement.

For example, if the SDL area is set at the entrance of a company or the entrance of a room, the user crosses this area at least several times and information is provided. In FIG. 7, PHS
The base station 23 covers one room, and the SDL base station 21
Is installed near the entrance 22 and the area 21 is the entrance 2
It is arranged to cover all those who use 2.

With such an arrangement, it becomes possible to obtain information after a certain time has elapsed.

FIG. 8 shows an example of installation in a corridor. If the SDL area 21 is installed so that people who pass through the corridor must cross it, reliable information transmission becomes possible.

In the same way, station ticket gates, station doorways, expressway toll gates, specific points on highways, in front of elevators,
The information acquisition rate can be improved by installing the SDL area at a place where the user crosses or has a high probability of stopping, such as an escalator boarding / alighting place and a toilet.

In the above embodiments, the user inputs an information request into the terminal in advance, and the requested item is automatically acquired from the communication network when the terminal enters the communication area. For regularly published information such as newspapers and magazines,
By regularly registering the required items, it becomes possible for the user to obtain information without inputting information requests one by one.

For example, a specific newspaper can be displayed on a mobile terminal using
When subscribing for a month, make a contract with a newspaper information provider to register. The user does not input a newspaper information acquisition request to the terminal. The user goes to work with a mobile terminal. An SDL area will be set up at the ticket gates of stations on the way to work.

Thus, the newspaper information of the day can be automatically transmitted to the portable terminal when the user passes through the ticket gate of the station. The procedure to be transmitted is the same as in the above embodiment. The terminal notifies the user by sound, light or vibration that the information acquisition is completed. As a result, the user can read newspaper articles on the platform of the station or on the train with the mobile terminal.

In this way, the registration / registration of a certain section is performed in advance.
By making a reservation, the input to the terminal can be omitted.

By the way, there is an attempt to realize an electric newspaper delivery service by connecting a high-speed wired line to each home. This is to pull an optical fiber to each home and try to provide various services by using this high-speed line.

However, for this reason, it takes a huge amount of money to build an infrastructure up to each household, and usually, a telephone or FA is used.
General households that only use services such as X are unacceptable.

According to the present invention, since it can be implemented by providing the SDL area at a specific place, there is no need to provide a special infrastructure for each home. Then, the user only needs to purchase a terminal, and the communication network side only arranges several radio base stations at a specific place such as a ticket gate of a station.

As described above, by providing the SDL area at a specific location, it is possible to realize a high-level information providing service without excessive capital investment.

Although various embodiments for achieving the first object have been described above, the present invention is as follows.

[1] Firstly, there is provided a system comprising a communication network, a wireless base station connected to the communication network, an information providing station connected to the communication network, and a portable terminal. In the wireless communication system, the portable terminal is connected by a wireless line via a wireless base station, and by issuing an information acquisition request, the information corresponding to the request can be received from the information providing station. When a portable terminal is provided with means for detecting that the portable terminal is located in an area where wireless communication with the wireless base station is possible and the portable information terminal is used to acquire information from the information providing station, the user of the terminal is arbitrary. When the mobile terminal enters the area where it can communicate with the wireless base station, it requests the information acquisition request to the terminal at the time It is characterized by being acquired dynamically.

In the case of this configuration, the user of the terminal makes an information acquisition request to the terminal at an arbitrary time. Then, when the terminal is carried and moved, when the terminal detects that it has entered the area where wireless communication is possible, it automatically makes a call, establishes a wireless communication line, and requests the communication network to obtain information. That there is a request, the request item is transmitted to the communication network side, the communication network transmits the request item etc. to the information providing station, and the information provided from the information providing station is wirelessly transmitted to the terminal according to this request. .

As a result, a wireless communication system can be obtained in which the user can receive the necessary information without being aware of the wireless service area.

[2] Secondly, there is provided a system comprising a communication network, a wireless base station connected to the communication network, an information providing station connected to the communication network, and a portable terminal, the communication network including: The portable terminal is connected by a wireless line via one or a plurality of wireless base stations, and the wireless base station and the portable terminal have a first downlink line that performs transmission at a first transmission rate;
A second downlink that performs transmission at a second transmission speed that is higher than the transmission speed of 1 and a wireless transmission line that is an uplink that performs transmission at a transmission speed equivalent to the first transmission speed; In a wireless communication system in which a downlink and uplink communication area is wider than a second downlink communication area, the portable terminal has entered the area where the second downlink communication is possible. When acquiring information from the information providing station using the portable terminal, the user of the terminal makes an information acquisition request to the terminal at an arbitrary time, and the portable terminal Is characterized in that the requested information is automatically acquired by the second downlink when the communicable area of the second downlink is entered.

In the case of this configuration, in addition to the function and effect of [1], the second service area having a narrow service area capable of high-speed transmission is provided.
Information can be acquired by high-speed transmission when entering the downlink area.

As a result, the user can receive the necessary information without paying attention to the wireless service area, and moreover, the wireless communication system can acquire a huge amount of data in a short time. Is obtained.

[3] Third, in the above-mentioned second configuration, the portable terminal makes a second information acquisition request from the user.
It is characterized in that the network is notified using the uplink and the first downlink regardless of whether or not it is located in the communicable area of the downlink.

As a result, in addition to the effects of [1] and [2], it is possible to make an information acquisition request at any time.

[4] Fourthly, in the above-mentioned configuration [2], the portable terminal also obtains information by the first downlink.

As a result, in addition to the effects of [1] and [2], it is possible to obtain information at any time.

A user who accesses the information providing station does not always want to obtain information in real time. For example, I would like to know the contents of the morning edition of the day when I come to the office, but I do not need that information from the time I leave the house until I head to the station, but rather while waiting for the train at the station or on the train. It will be.

In this system, the user inputs the information he or she wants to the terminal carried by him or her at any time when he or she wants the information. Terminal is stored of the data in advance what kind of information can be acquired, to check whether information requesting that accessible, notifies the possible users. The user ends the terminal operation when the registration is completed.

The terminal observes whether it is located in an area where wireless communication is possible. As an example of the observation, a method of outputting a specific frequency carrier from the base station side, observing the carrier frequency, and performing carrier sense whether the carrier has a predetermined electric field strength or higher can be given.

When the terminal detects that it has entered the area where wireless communication is possible, it automatically makes a call and establishes a wireless communication line. The terminal notifies the communication network that there is an information acquisition request, and transmits the requested item. The communication network transmits request items and the like to the information providing station, and wirelessly transmits the request information from the information providing station to the terminal. The terminal notifies the user that the information acquisition is completed by a lamp or a buzzer.

As described above, when it is detected that the terminal has entered the area where wireless communication is possible, a call is automatically made to establish a wireless communication line and notify the communication network that there is an information acquisition request. Then, the request item is transmitted to the communication network side, and the communication network transmits the request item and the like to the information providing station, and the information provided from the information providing station according to this request is wirelessly transmitted to the terminal. A wireless communication system can be obtained in which the user can receive necessary information without being aware of the wireless service area.

Therefore, according to the present invention, since it is detected that the terminal has entered the wireless communication area and the information is automatically acquired, the user does not have to be aware of the wireless communication area at all to provide an advanced information providing service. It becomes possible to enjoy.

The above is the embodiment of the wireless communication system capable of rational information acquisition. In the wireless communication system, as the communication transmission speed becomes higher, the terminal also needs a receiving circuit for high-speed transmission. The receiving circuit for high-speed transmission requires high power consumption during operation, and the battery problem is great for a terminal (wireless terminal device) carried by an individual because it is necessary to secure a battery capacity.

In addition, as in the above-described embodiment, in order to be able to obtain information without being aware of it, the terminal must always be in the operating state, which means that the battery is uselessly consumed. , Power saving measures are important.

Therefore, from the viewpoint of power saving, an embodiment of the present invention will be described.

First, the battery saving method of the wireless communication system will be described.

[0154] A terminal (wireless terminal device) like mobile communication
When it is portable, it is difficult to always connect the power source by wire and operate it. Therefore, generally, the battery is mainly used as the power source. When making a call from the wireless terminal device, the switch may be turned on each time, but it is not decided when the call is received when the call is received, so it is necessary to always activate the receiving circuit. is there. However, since the power consumed for this consumes the battery, there is a problem that the waiting time for incoming calls is limited.

As a conventional technique for solving this problem, there is discontinuous reception. This is a method in which the receiving circuit is not activated all the time, but is started up at a certain time interval for carrier sensing, and if there is no received wave, the receiving circuit power is turned off again until the next startup time. Although the battery saving is performed by this, even if it is intermittent, the power consumption is not ridiculous in the device with large operating power.

In addition, intermittent reception is performed even outside the effective wireless zone of communication, and even during spot transmission where the coverage area is local, the intermittent reception is simply performed without determining the inside or outside of the area. Therefore, even if the communication is invalid, the receiving circuit is activated and power is consumed.

For saving the battery, there is a method of reducing the power consumption of each device, but it is difficult to reduce the power consumption as it is. Also PH
In a communication system using a microcell such as S, a position registration packet must be transmitted to a wireless base station as the position registration area moves, and the power consumption for this also shortens the battery duration. was there.

Further, with the recent development of the mobile communication system, communication at a high transmission rate has been demanded.
Transmission and reception at a high transmission rate consumes a lot of power. Even if the intermittent reception is performed, the power consumption of the receiving circuit is not small, and there is a demand for reducing the activation of the receiving circuit as much as possible for battery saving.

However, if the start-up interval of the receiving circuit is set too long, when the broadband communication service is carried out in spots, there is a possibility that the receiving area may pass through with the power off, and communication is received. There is a service problem such as a long waiting time.

In this embodiment, it is possible to operate a wireless terminal device which consumes less power when receiving at high speed transmission.

The battery saving method of the wireless terminal device according to the following embodiments enables the battery saving without impairing the quality of service by minimizing the operation of the broadband wave receiving circuit which consumes a lot of power. Therefore, in the wireless terminal device, a reception detection unit that consumes less power due to a narrowband wave or the like is provided in addition to the wideband wave reception circuit, and if the wideband wave is not received, low power consumption reception is performed. The detection means detects the service in the wideband wave, and the power supply control section operates the wideband wave reception section to perform reception. When it is not necessary to perform the wideband wave receiving operation, the wideband wave receiving circuit is stopped to save the battery, which will be described in detail below.

(Eighth Embodiment) A first embodiment of the battery saving system of the wireless terminal device of the present invention will be described as an eighth embodiment. FIG. 12 is a block diagram showing the configuration of the battery saving system in this embodiment,
FIG. 13 is a diagram for explaining the operation.

In FIG. 12, reference numeral 31 is a wireless terminal device. Reference numeral 32 is a power supply control unit, 33 is a wideband wave receiving circuit that performs a receiving operation in response to a wireless transmission wave being a wideband wave, 3
Reference numeral 4 is a medium band wave transmission / reception circuit that performs transmission / reception operation corresponding to a medium band wave, 35 is a narrow band wave reception circuit that performs a reception operation corresponding to a narrow band wave, and 36 is a power supply control unit 32.
Power supply operating signal for operating the circuit from 37a to 3a
Reference numeral 7c is an antenna corresponding to one or both of transmission and reception, and the wireless terminal device 31 is composed of these.

Reference numeral 36 denotes a power supply operation signal for operating the circuit output from the power supply control section 32. The wideband wave reception circuit 33, the medium band wave transmission / reception circuit 34, and the narrowband wave reception circuit 35 are supplied from the power supply control section 32. By receiving the output power supply operation signal 36 addressed to itself, power is supplied from a power supply unit (not shown) to enable circuit operation. In addition, the power supply control unit 32 generates and controls power supply operation signals 36 for the wideband wave reception circuit 33, the medium band wave transmission / reception circuit 34, and the narrowband wave reception circuit 35 according to the situation, and controls these operations. It is a thing.

The antenna 37a is used for receiving the broadband wave receiving circuit 33, the antenna 37b is used for transmitting and receiving the medium band wave transmitting and receiving circuit 34, and the antenna 37c is transmitting and receiving for the narrow band wave receiving circuit 35. Antenna for.

Next, the operation of the apparatus having the above configuration will be described with reference to FIG.
2 and FIG. 13 will be described. In FIG. 13, the same numbers as in FIG. 12 indicate the same configurations as in FIG. 12, respectively. Also, the hatched blocks indicate that they are in operation.

When the power supply of the wireless terminal device 31 is turned on, the power supply control section 32 is activated. Then, the power control unit 3
2 controls the operation of the medium band wave transmission / reception circuit 34, the wide band wave reception circuit 33, and the narrow band wave reception circuit 35 by supplying power according to the situation.

Normally, during standby when no communication is performed, as shown in FIG. 13 (a), the narrow band wave receiving circuit 35 and the power supply control unit 32 operate, and the wide band wave receiving circuit 33 is operated.
Also, the transmission / reception circuit 34 for the medium band wave is disabled. Since the narrowband wave receiving circuit 35 and the power supply control unit 32 are operating, the wireless terminal device 31 can respond to the call even if the wideband wave receiving circuit 33 and the medium band wave transmitting / receiving circuit 34 are not operating. Because.

That is, the incoming operation is performed as follows. First, the wireless terminal device 31 is called by a signal of a narrow band wave. As a result, the wireless terminal device 31 and the power supply control unit 32 can know what kind of call it is through the narrow band wave receiving circuit 35. When the communication of the medium band wave is called by the signal of the narrow band wave, the power supply control unit 32 sends a power supply operation signal of the medium band wave transmission / reception circuit 34 as shown in FIG.
When the power of 4 is turned on and the operation is started, transmission / reception using the medium band wave is performed.

Further, FIG. 13C shows a second mode in the eighth embodiment, which is an example in which the wideband wave receiving circuit 33 and the medium band wave transmitting / receiving circuit 34 are activated by calling by a narrow band wave signal. .

The power supply control unit 32 sends the operation signal to the wide band wave receiving circuit 33 and the medium band wave transmitting / receiving circuit 34 by calling by the narrow band wave signal. The wideband wave receiving circuit 33 and the medium band wave transmitting / receiving circuit 34 operate using respective antennas 37a and 37b.

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.

Although narrow band signals can be transmitted at low frequencies, high frequencies are used for wide band signals.
The transmission rate of the narrow band signal is 1 to 2 kbps, the medium band signal is 32 kbps, and the wide band signal is 155 Mbps. Narrow band signals can be transmitted in the several hundred MHz band, but it is difficult for wide band signals to use this band because other communication cannot be performed at all.
There is no choice but to use millimeter wave bands such as bands. Due to the above relationship between bandwidth and frequency, reception of narrowband signals can be performed with extremely low power, and reception of wideband signals requires large power.

Therefore, as in this embodiment, a narrow band signal is used for call monitoring during standby, and in the standby state, the receiving circuit 33 for wide band signals and the transmitting / receiving circuit 34 for middle band signals are in a power-off state. And receive circuit 3 for narrowband signals
By operating in a power supply state, 5 enables call monitoring during standby, and when there is a call, the receiving circuit 33 for wideband signals and the transmitting / receiving circuit 3 for middle band signals
By starting the power supply to the necessary one among the four, and operating it, effective battery saving becomes possible.

(Ninth Embodiment) Another embodiment will be described.

Asymmetric communication has a narrow band wave line with a slow transmission rate and a wide band wave line with a high transmission rate. As shown in FIG. 9, data on a line using a narrow band wave is used. Transmission is performed in the wide area A2, and data transmission on a line using wideband waves is in the narrow area A7.
Done in. Now, it is assumed that the base station A6 is a narrow-band line dedicated to calling, which covers the wide area A7. This includes, for example, a pager.

The pager calling area has a very wide area such as prefecture or Kanto area, but since users in that area must be accommodated within limited frequency resources, a low transmission rate (several hundred bps) is required. ~
Only transmission at several kbps) is possible.

Transmission in the medium band wave is carried out in a limited area, and a plurality of areas are continuously arranged so that the user can carry out communication at any position while moving. This is brought about by a technology called location registration. A plurality of base stations A1 are arranged, each having a narrow area A2, and these areas are designed to overlap. Examples include mobile phones and second-generation cordless phones (PHS).

In the PHS, a terminal that has entered an area notifies the base station that it is in this area, and the control station A
By registering the location in 3, the incoming call from the communication network is possible. The zone radius is several hundred meters to several kilometers,
Since it is sufficient to support the users existing in this area, communication can be performed at a higher speed than that of a pager, and the communication speed is several tens of kb.
Transmission can be performed at ps to several 100 kbps.

Wideband wave transmission is a spot-arranged downlink-only line, and each zone A4 is spot-arranged and not continuous, and data transmission is performed only when the user passes the position. Can be done. This area is installed at a ticket gate of a station where a user is likely to pass, a main road, or the like, and its coverage range is several meters to several tens of meters. Data transmission in a limited range, and because the areas are separated from each other, high-speed communication is possible, and several 10M
Data can be transmitted at a high speed of about bps to 150 Mbps. As an example of such wide band / spot area data transmission, an SDL system (Japanese Patent Application No. 06-137621) is used.
No.).

In the conventional PHS, it is necessary to register the position of a relatively narrow area. This has an area radius of tens
Since the distance is 0 m to several km, the area frequently changes when the terminal is moving, and the position must be registered each time. Also, a method of dividing the area into several groups and registering the location only when the group is changed is considered. However, in this method, the PHS must be constantly turned on to demodulate the received signal in order to discriminate the area group.

According to the present invention, it is possible to completely turn off the power of the PHS / SDL in the standby state of the PHS / SDL. When the power is turned on, the location is registered using PHS. The normal position registration information is stored in the control station A3 that controls the PHS, and when calling using the PHS, the area is specified using the position registration information. In the present invention, the location registration information is notified to the control station calling by the pager, and the calling is performed only by the pager. After the terminal has registered the location using PHS when the power is turned on, P
The HS is turned off and the pager receives the data.
As shown in FIG. 10, the pager has a mechanism for turning on the power only during the time when a signal addressed to itself may be sent. This is called an intermittent reception technique and is widely and commonly used.

The pager calling range is extremely wide, and once the position is registered, the pager does not frequently go out unless traveling on an expressway or traveling on the Shinkansen. However, if you leave that range, you will not be able to receive calls. The normal pager was for incoming calls only, and the calling area was limited at the time of contract, and could not be used anywhere else.

In the present embodiment, this problem can be solved by performing location registration by PHS. For that purpose, the signal at the time position B1 in FIG. 10 where the signal addressed to itself may come may have the configuration shown in FIG.

A wide area ID indicating a pager calling area is added to the signal and is used. When the terminal receives using the pager, looks at the wide area ID in the received information, compares it with the ID when it registered its location in advance, and when it is found that the area is clearly outside the expected area, The functional elements of the PHS as a terminal are controlled to be powered on, and the location registration is performed again.

As a result, the problem that the pager registered in the Tokyo area cannot be used in Osaka or the like can be solved.

In the standby state of the pager, the PHS and SDL functional elements as terminals are powered off (OFF).
Leave.

It is assumed that there is a data transmission request to the terminal by SDL on the communication network side. On the communication network side, the pager first calls the terminal. The terminal that received the call is PH
Turn on S to register the location of the PHS area. This is because the communication network side has the terminal position information to the extent that the wide area of the pager can be specified by the previous position registration, but does not have the position information with sufficient accuracy to perform communication in PHS.

After the PHS line is established by the location registration of the PHS area (PHS service area), the communication network side notifies the terminal that there is a communication request for using the SDL. After this, entering the spot area (service area using high-speed SDL lines)
For high speed data transmission.

In the standby state of the conventional terminal, the battery is saved by performing the intermittent reception operation by the PHS, but in the present invention, the intermittent reception by the pager is performed so that a higher battery saving effect can be obtained. I chose

Comparing the PHS and the power consumption of the pager in the standby state, the pager has an order of magnitude smaller. This is due to each transmission rate, the frequency band used, and the intermittent reception interval. That alone is not different from the one that lengthens the PHS intermittent reception interval,
PHS requires frequent location registration, whereas pager location registration need only be performed once when the power is turned on, and the number of location registrations is drastically reduced. The location registration work must be transmitted, and its power consumption is high.

Combining pager + PHS + SDL,
Remarkable battery saving effect can be obtained by exchanging information such as location registration information between the control stations.

In the present embodiment, the reception during standby is intermittently performed only with the narrow band signal, so that the power consumption during standby can be significantly reduced, and more effective battery saving can be realized.

(Tenth Embodiment) The tenth embodiment is the second embodiment of the battery saving system of the present invention, and the schematic configuration is shown in FIG. 14 and the operation is shown in FIG. .

In FIG. 14, the same reference numerals as those in FIG. 12 denote the same structures as those in FIG. Thirteen
Reference numeral 1 is an infrared receiving section for detecting infrared rays, and 132 is an infrared signal indicating that it is within the wideband wave receiving area. In this embodiment, the power supply control unit 32 and the wideband wave receiving circuit 33 are prepared, and there is no circuit for narrow band waves and medium band waves. An infrared receiver that detects infrared rays can be generally realized with extremely low power consumption. In this embodiment, attention is paid to this point, and infrared rays are used to wait for a call.

Next, the operation of this embodiment will be described with reference to FIGS. 14 and 15. The infrared reception unit 131 of the wireless terminal device 31 operates at low power, and when in standby
As shown in (a), the infrared receiver 131 and the power controller 132
Operates, and the broadband wave receiving circuit 33 stops operating and is in a state.

In operation, as shown in FIG. 15 (b), the infrared receiver 131 detects the infrared signal 132 and outputs an output to the power supply controller 32. The receiving circuit 33 is operated. The broadband wave receiving circuit 33 performs a receiving operation using the antenna 37a.

The monitoring circuit using infrared rays can have a circuit configuration with extremely low power consumption. Therefore, by adopting the infrared reception system capable of realizing a circuit configuration with low power consumption for monitoring during standby as described above, more effective battery saving becomes possible.

Since infrared rays are used, it is necessary to provide an infrared sensor in the wireless communication device 31, which is the terminal side. This sensor is attached to a collar or pocket mouth of the clothes worn by the user carrying the terminal. Alternatively, the clip may be attached to the outside of the bag for use.

(Eleventh Embodiment) FIGS. 16 and 17
FIG. 8 is a diagram showing a schematic configuration and an operation according to a third embodiment of the battery saving system.

In FIGS. 16 and 17, the same reference numerals as those in FIG. 14 indicate the same structures. In this embodiment, a narrow band wave receiving circuit 151 is provided as shown in FIG. 16 instead of the infrared receiving unit 131 in the configuration of FIG. The narrowband wave reception circuit 151 is a circuit that performs reception processing (reception operation) of narrowband waves.

Next, the operation of this embodiment will be described with reference to FIG.
A description will be given based on (a) and (b). In a place where wideband wave service is possible, a specific narrowband wave indicating this is broadcast (transmitted). In the standby mode, as shown in FIG. 17A, the narrow band wave receiving circuit 15
1 and the power supply control unit 2 are operating, and the narrow band wave receiving circuit operates at lower power than the wide band wave receiving circuit.

In a place where a wide band wave can be received, the narrow band wave reception circuit 151 receives and processes the narrow band wave radio wave, and the power supply control unit 32 detects it by the reception output from the narrow band wave reception circuit 151. Wideband receiver circuit 33
A power supply operating signal is applied to the wide band receiving circuit 33 in order to operate. Then, the broadband receiving circuit 33 is supplied with power to start the operation, and performs the broadband wave receiving operation.

As described above, in this embodiment, the wideband wave receiving circuit is turned off during standby, and the narrowband wave receiving circuit is turned on so that the narrowband wave receiving circuit monitors the narrowband wave. When a call is received using a narrow band wave, the power supply control unit powers on the wide band wave reception circuit to start the operation. Since it can be operated, it is highly effective in battery saving.

(Twelfth Embodiment) The twelfth embodiment is the fourth embodiment of the battery saving system.

18 and 19 are schematic diagrams showing the construction and operation of this embodiment.

In FIG. 18, the elements having the same reference numerals as those in FIG. 12 have the same configurations. In the figure, 71 is an inductive coupling coil as a sensor, and 72 is an amplifier for amplifying the output of this inductive coupling coil 71.

Further, in FIG. 19, reference numeral 31 is a wireless terminal device, 81 is an electromagnetic induction device installed in an area capable of wideband wave reception, and an electromagnetic induction is applied to the inductive coupling coil 71 incorporated in the wireless terminal device 31. It is for generating a signal by induction. That is, the inductive coupling coil 71 and the electromagnetic induction device 81 incorporated in the wireless terminal device 31 have the same coupling characteristics, the electromagnetic induction device 81 is always supplied with power, and the inductive coupling coil 71 receives a signal by electromagnetic induction. Can be generated.

Next, the operation will be described. Outside the wide-band coverage area, the function of each component in FIG. 18 is stopped. In the coverage area of wideband waves, FIG.
The electromagnetic induction device 81 as shown in FIG. 2 is provided, and the user of the wireless terminal device can move the wireless terminal device 31 to the electromagnetic induction device 8
Move along 1.

AC power is constantly supplied to the electromagnetic induction device 81, and a current flows in the inductive coupling coil 71 due to the electromagnetic induction effect of the inductive coupling coil 71 of the wireless terminal device 31 and the electromagnetic induction device 81. Amplifier 7 immediately to this current
It is amplified by 2 and transmitted to the power supply control unit 32. The power supply control unit 32 detects that a wideband wave receivable area has been entered by the signal from the amplifier 72, and outputs a power supply operation signal 36, which is a control signal that acts to turn on the power supply of the wideband wave reception circuit 33, to a wide band. By sending to the wave receiving unit, the power of the wideband wave receiving circuit 33 is turned on, and wideband waves are received via the antenna 37a.

As a result, since there is no power consumption of the receiving circuit or the transmitting / receiving circuit outside the wideband wave receivable area, it is highly effective in battery saving. This embodiment is particularly effective when installed in, for example, a ticket gate device at a station.

(Thirteenth Embodiment) The thirteenth embodiment is another embodiment of the battery saving system, which suppresses unnecessary power consumption of the wideband wave receiving circuit while operating in the medium band wave. This is the battery saving method as described above, which will be described with reference to FIGS. 20 (a) and 20 (b).

20 (a) and 20 (b) show a schematic structure according to the twelfth embodiment.

In FIG. 20, the same reference numerals as those in FIG. 12 denote the same components as those in FIG. In the figure, reference numeral 91 is a baseband device for medium band waves, which is a wireless base station that communicates with medium band waves, and 92 is a base station device for wideband waves, which is a wireless base station that communicates with wideband waves.

FIG. 21 is an explanatory diagram of the operation of this embodiment.

In FIG. 21, reference numeral 101 is a wideband wave reception start identification code, and 102 is a wideband wave reception end identification code. The reception start identification code 101 and the reception end identification code 102 are transmitted by the base station 91 for the medium band wave, the reception identification of these codes is performed in the medium band wave reception circuit 34, and the power supply control unit 32 performs the identification based on the reception identification result. The power supply operation signal 36 is controlled to control ON / OFF of the power supply of the wideband wave reception circuit 33. Therefore, the medium band wave receiving circuit 3
4 has a reception start identification code 101 and a reception end identification code 102.

Next, the operation of this embodiment will be described with reference to FIG.
A description will be given based on (a), (b) and FIG. Figure 2
In 0 (a), it is assumed that the wireless terminal device 31 can receive at least both the radio waves of the base station 91 of the medium band wave and the base station 92 of the wide band wave.

In FIG. 20B, the medium band wave receiving circuit 34 and the power supply control unit 32 are operating in the standby state, and the medium band wave receiving circuit 34 receives and identifies the wide band wave reception start identification code 101. In the case, the power control unit 3
As shown in FIG. 21, reference numeral 2 controls the wideband wave receiving circuit 33 to turn on the power source to operate the wideband wave receiving circuit 33.

Next, when the medium band wave reception circuit 34 receives and identifies the reception end identification code 102 of the wide band wave, the power supply control unit 32 causes the wide band wave reception circuit 3 as shown in FIG.
The power supply of 3 is controlled to be turned off to stop the operation.

As a result, it is possible to suppress wasteful power consumption of the wide band wave receiving circuit while operating in the medium band wave, and it is possible to obtain a high effect on battery saving.

(Thirteenth Embodiment) In the thirteenth embodiment, by controlling the operation timing of the wide band wave receiving circuit using the medium band wave when time division multiplexing is performed in the wide band wave, This is to save the battery by stopping the operation of the wideband wave receiving circuit except in the receiving slot.

FIG. 22 is an explanatory diagram of the operation of the battery saving system according to this embodiment. In FIG. 22, the same reference numerals as those in FIG. 21 are the same as those in FIG. 111A and 111B are timings of data transmitted by wideband waves. The device configuration of the 13th embodiment is similar to the configuration described in the 12th embodiment.

Next, the operation of the thirteenth embodiment will be described with reference to FIG.
It will be described based on 2. In the same manner as the twelfth embodiment, the medium band wave receiving circuit 34 performs reception identification of the wideband wave reception start identification code 101, and thereby the power supply control unit 32.
Further, the wideband wave receiving circuit 33 is operated by controlling the power supply to be turned on, and the wideband wave receiving circuit 3 recognizes the reception completion identification code 102 of the wideband wave by the wideband wave receiving circuit 3.
The power supply of No. 3 is controlled to be turned off and stopped, which is performed as follows.

The reception start identification code 101 and the reception end identification code 102 are sent by the base station 91 for the medium band wave, the reception identification of these codes is performed in the medium band wave receiving circuit 34, and the power supply control is performed based on the reception identification result. The power supply operation signal 36 is controlled by the unit 32, and the wideband wave receiving circuit 3 is controlled.
The power of 3 is controlled to be turned on and off.

In the present embodiment, since it is premised that time division multiplexing is performed for wide band waves, the operations of the medium band wave receiving circuit 34 and the wide band wave receiving circuit 33 are synchronized and the base station apparatus is operated. The 91 side transmits the reception start identification code 101 in the medium band wave immediately before the wide band wave data 111 and causes the medium band wave receiving circuit 34 of the communication terminal device 31 to receive the reception start identification code 101. Immediately after the end of the transmission of the data 111, the reception end identification code 102 is transmitted from the base station apparatus 91 side by the medium band wave, and this is transmitted to the communication terminal apparatus 31
By causing the medium band wave receiving circuit 34 to receive the data, the wide band wave receiving circuit is operated only at a certain time of data.

When the time division multiplexing is performed on the wide band wave, the operation timing of the wide band wave receiving circuit is controlled by using the medium band wave to stop the operation of the wide band wave receiving circuit except the receiving slot. It has a great effect on battery saving.

(Fourteenth Embodiment) In the fourteenth embodiment, when a wideband wave is transmitted as a packet, the wideband wave reception start identification code is sent as an intermediate band wave at the packet transmission timing. Power on the receiving circuit 33,
The wideband reception reception identification code is sent at the end of the packet to identify it in the wideband reception circuit 33, and the power of itself is turned off to save the battery.

Alternatively, by synchronizing the reception timings of the medium band wave and the wide band wave and sending the wide band wave reception start identification code 101 received by the medium band wave immediately before the wide band wave data, time division multiplexing is performed in the wide band wave. This is an example of performing battery saving by stopping the operation of the wideband wave receiving circuit in a slot other than the wideband wave reception slot when the wideband wave is being received.

23 and 24 show a fourteenth embodiment of the present invention.
It is a figure which shows an example of the battery saving system concerning the Example of this.

In FIG. 23, the same symbols as those in FIG. 21 have the same functions as those in FIG. In the figure, 121 is data transmitted by broadband waves, 12
2 is a data code indicating the end of data transmission. In the example of FIG. 23, the wideband reception circuit 33 has a function of turning off its own power source when the wideband reception end identification code 122 in the packet is identified.

Further, in the example of FIG. 24, the reception timings of the medium band wave and the wide band wave are synchronized, the wide band wave reception start identification code 101 received by the medium band wave is sent immediately before the wide band wave data, and The wideband wave reception end identification code 102 is sent immediately after the end of the wideband wave data, and the medium band wave reception circuit 34 discriminates them, thereby controlling the power on / off of the wide band wave reception circuit 33 via the power supply controller 32. The configuration.

Next, the example of FIG. 23 will be described. In FIG. 23, in the standby mode, the reception circuit 34 for the medium band wave is operating, but the reception circuit 33 for the wide band wave is in the power-off state.

The operation of the receiving circuit 34 for the medium band wave is not always continuous as shown in FIG. 23, and includes the case where the receiving operation is performed intermittently in order to save power consumption.

The medium band wave base station 91 transmits the wide band wave reception start identification code 101 by the medium band wave, and the wide band wave base station 9
2 sends a packet with a broadband wave reception end identification code 122 at the end of the broadband wave transmission data.

On the terminal device 31 side, the reception circuit 3 for the medium band wave is provided.
When 4 detects the wideband wave reception start identification code 101, this identification output is given to the power supply control section 32. Therefore, the power supply control section 32 which receives the identification output receives the wideband wave reception circuit 33.
Signal is output so that the wideband wave reception circuit 33 starts reception as indicated by reference numeral 103 in the drawing.

At the end of the wideband wave transmission data, a packet with the wideband wave reception end identification code 122 is attached, and when the wideband wave receiving circuit 33 detects this,
As indicated by the reference numeral 104 in the figure, immediately (the wideband wave receiving circuit 33) stops its operation and turns off the power supply.

In the case of the example in FIG. 24, the reception timings of the medium band wave and the wide band wave are synchronized, and the base station 91 of the medium band wave transmits the wide band wave reception start identification code 101 immediately before the wide band wave data. . By identifying this by the medium band wave receiving circuit 34 of the terminal device 31, the power supply of the wide band wave receiving circuit 33 is turned on via the power supply control unit 32.

Also, the base station 91 for medium band waves transmits the wide band wave reception end identification code 102 immediately after the end of the wide band wave data. The intermediate band wave receiving circuit 34 of the terminal device 31
Then, the power supply of the wideband wave receiving circuit 33 is controlled to be off via the power supply control unit 32.

As a result, the reception timings of the medium band wave and the wide band wave are synchronized, and the wide band wave reception start identification code 101 received by the medium band wave is sent immediately before the wide band wave data, thereby performing time division multiplexing with the wide band wave. When the operation is performed, it is possible to stop the operation of the wideband wave receiving circuit in a slot other than the wideband wave receiving slot, which is highly effective in saving the battery.

As described above, in order to achieve the second object, the present invention provides: [i] Firstly, as a battery saving method of a wireless terminal device, a receiving circuit for receiving a wireless transmission wave of a first transmission speed is provided. A transmission / reception circuit for transmitting and receiving a wireless transmission wave having a second transmission speed lower than the first transmission speed, and a wireless transmission wave having a third transmission speed lower than the second transmission speed A receiving circuit for receiving the wireless transmission wave of the first transmission speed and a receiving circuit of the wireless transmission wave of the first transmission speed and a wireless circuit of the second transmission speed according to the information of the signals received by the receiving circuit of the wireless transmission wave of the third transmission speed. The wireless terminal device is provided with a control unit having a function of turning on / off the power supply of the transmission / reception circuit of the transmission wave, and in a state where the reception at the first and second transmission rates is on standby, the wireless transmission at the third transmission rate is performed. Only operate the wave receiving circuit Can, the power of the first and second radio transmission wave transceiver circuit of transmission speed and off, characterized in that conserve battery.

The battery saving method of the wireless terminal device according to the present invention is operated with a low power consumption receiving circuit which operates constantly, an on / off part of the power supply of the receiving circuit which operates with wide band waves, and a medium band wave. A wireless terminal device is provided with an on / off unit for powering on a transmitting circuit and a power supply control unit for controlling on / off of powering a wideband receiving circuit or a mediumband transmitting / receiving circuit based on information received by the low power consumption receiving circuit. ,
If the information from the narrow band wave receiving circuit requires wide band wave reception, turn on the power of the wide band wave receiving circuit,
Turn off if not needed.

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.

Although narrow band signals can be transmitted at low frequencies, high frequencies are used for wide band signals.
The transmission rate of the narrow band signal is 1 to 2 kbps, the medium band signal is 32 kbps, and the wide band signal is 155 Mbps. Narrow band signals can be transmitted in the several hundred MHz band, but it is difficult for wide band signals to use this band because other communication cannot be performed at all.
There is no choice but to use millimeter wave bands such as bands. Due to the above relationship between bandwidth and frequency, reception of narrowband signals can be performed with extremely low power, and reception of wideband signals requires large power.

In the battery saving method of the wireless terminal device of the present invention according to the first aspect of the invention, the receiving circuit for the narrow band wave is operated for normal calling, and the power supply for the transmitting and receiving circuit for the wide band wave and the medium band wave is turned off. When the ringing signal of the terminal is detected in the narrow band wave receiving circuit, the power supply control unit turns on the power of the wide band wave receiving circuit and the medium band wave transmitting / receiving circuit, and receives the wide band wave and the middle band wave. Performs wave transmission / reception operations. When the communication with the wide band wave or the medium band wave is completed, the power of the wide band wave receiving circuit or the medium band wave transmitting / receiving circuit is turned off again. According to the present invention, only the narrow band signal is used for the reception in the standby mode, so that only the reception circuit for the narrow band wave can be operated in the standby mode, and the power consumption can be suppressed to save the battery.

[Ii] Secondly, the battery saving method of the wireless terminal device according to the present invention comprises a receiving circuit for receiving the wireless transmission wave of the first transmission speed and a speed lower than the first transmission speed. A transmission / reception circuit for transmitting and receiving a wireless transmission wave of the second transmission speed, and a detection means for identifying that the wireless terminal device is capable of receiving the wireless transmission wave of the first transmission speed, A power supply control unit having a function of turning on / off the power supply of the receiving circuit of the wireless transmission wave of at least the first transmission speed by the detection unit is provided in the wireless terminal device, and the communication service is performed at the first transmission speed. In a place where there is no communication, the power of the receiving circuit for the wireless transmission wave at the first transmission speed is turned off to prevent the consumption of the battery, and in a place where the communication service at the first transmission speed is provided, the service means is provided with the detection means. The detects that it is within the A 1
It is characterized in that reception is performed at the transmission rate of.

In this battery saving system, the means for detecting whether or not the broadband wave communication service can be used is normally operated, and the wide band wave receiving power supply is turned off. When it is detected that it is possible, the power supply controller turns on at least the power supply of the wideband wave receiving circuit to perform the wideband wave receiving operation. After the reception of the wideband wave is completed, the power supply control unit turns off at least the power supply of the wideband wave reception circuit.
According to the present invention, the power supply of the receiving circuit for the wideband wave is turned off when the wideband wave service is not performed, and the wideband wave detecting means uses a means which consumes less power, so that the battery quality is not deteriorated. Saving is possible.

[Iii] Thirdly, the battery saving method of the wireless terminal device according to the present invention comprises a receiving circuit for receiving the wireless transmission wave of the first transmission speed and a speed lower than the first transmission speed. The power supply of the transmission / reception circuit for transmitting and receiving the wireless transmission wave of the second transmission speed and the power supply of the reception circuit of the wireless transmission wave of the first transmission speed are turned on / off according to the reception information at the second transmission speed. A power control unit having a function is provided in the wireless terminal device, and the power control unit is controlled by the identification signal transmitted to the wireless terminal device at the second transmission rate immediately before the reception service at the first transmission rate is performed. It is characterized in that the receiving circuit of the wireless transmission wave of the first transmission speed is activated and the receiving circuit of the wireless transmission wave of the first transmission speed is stopped immediately after the reception service at the first transmission speed is completed. .

In this battery saving system, the receiving circuit for the medium band wave is normally operated and the power source for receiving the wide band wave is stopped. The information of the wide band wave is included in the information received by the medium band wave. If a code indicating the start is inserted and a code indicating the start of wideband wave reception is detected in the reception information in the medium band wave, the power supply control unit activates the power supply of the wideband wave reception circuit, Performs wideband reception operation. When the reception of the wideband wave ends, the power supply control unit stops the power supply of the wideband wave reception circuit. According to the present invention, when the broadband wave information is transmitted intermittently, the power supply of the broadband wave receiving circuit is stopped while the broadband wave information is not transmitted, which enables battery saving without impairing the service quality. Become.

Therefore, according to the battery saving system of the wireless terminal device of the present invention shown in the eighth to fourteenth embodiments, the operation of the wideband wave receiving circuit which consumes a lot of power is minimized to provide the service. Battery can be saved without sacrificing quality.

In the above example, the battery saving was performed in the standby state. However, in both cases, a wide band line and a narrow band line are used, and the wide band line is used only when necessary by the narrow band line. To use the transmission,
It controls the power supply of the wideband receiving circuit and cannot be applied to existing systems as it is.

In high-speed wireless communication using a spot wireless zone (a service area of a narrow range) that does not have such a system, intermittent reception is required in a wide band receiving circuit in order to reduce power consumption during standby. .

However, if the intermittent reception period is set to be long, it is very effective in saving power consumption. However, since the spot radio area is small, the terminal outside the area cannot be received before high-speed radio data reception is completed. May move or may not be able to receive data at all. Further, if the intermittent reception cycle is shortened, the above problem does not occur, but the battery saving effect cannot be sufficiently obtained. An embodiment for solving this will be described below.

The mobile communication terminal carries out intermittent reception in order to save the battery, and conventional intermittent reception is carried out by turning on / off the power of the receiver at regular intervals.

In recent years, LAN (Local Area N)
wireless LAN with the increase in the transmission speed of
There is also a demand for higher speed. Even outdoors, high-speed wireless data communication in spot areas has been considered. For example, FTTC (Fiber-To-T
For the transmission of the last end of the he-Curb), it is conceivable to realize data communication by high-speed wireless communication in the spot area and high-speed wireless transmission of traffic information on the road or on the highway in the spot area. ing.

FIG. 25 shows an implementation example of these systems. The mobile terminal 1105 performs high-speed communication using the existing spot wireless zone (spot wireless area) 1042.

The terminal 1105 used in such a mobile communication system is different from the receiver used in the wide area wireless area 1041 and the receiver used in the spot wireless area 1042 because the transmission speed of the received data is different. The receiver is used. In such a system as well, intermittent reception must be performed in order to save the battery.

In particular, the receiver used in the spot radio area must receive high-speed radio data, and therefore its power consumption is much larger than that of the receiver used in the wide area radio zone. Therefore, battery saving by intermittent reception is effective.

In the conventional intermittent reception described above, that is, when the receiver used in the spot radio area is operated by turning on / off the power of the receiver at regular intervals, the battery must be used if the period is not large. The saving effect cannot be obtained.

On the other hand, in the spot radio area, since the area is small, if the intermittent reception period is set to be large, the power of the receiver is crossed without turning on in the spot radio area, and high-speed data cannot be received at all. There are cases. Also, even if the power of the receiver is turned on in the spot radio area, all high-speed data is not received,
In some cases, the terminal may leave the spot wireless area. If the intermittent reception cycle is shortened in order to prevent such a situation, there is a drawback that the battery saving effect cannot be sufficiently obtained.

Therefore, the high-speed data receiver, which consumes a lot of power, turns on the power only when it enters the large wireless zone including the small wireless zone so that a very efficient battery saving can be realized. The above drawbacks are solved by making it possible to extend the standby time of the mobile terminal. The details will be described below.

(Fifteenth Embodiment) FIG. 25 shows a system configuration diagram for implementing the present invention. In the system shown in the figure, the base station 1101 has an antenna 1102, and the wide area wireless zone 1
041 is formed. Wide area wireless zone 1041 is several hundred k
Transmission / reception is performed with a mobile terminal at a transmission speed of bps to several Mbps. The antenna 1103 forms a spot wireless zone 1042 having a radius of 1 meter to a dozen meters within the wide area wireless zone 1041.

In this spot radio zone 1042, information is transmitted to the terminal at a transmission rate of several tens of Mbps to hundreds + Mbps.

A method for obtaining desired information by the user using the portable terminal in such a system will be described.

[0264] The portable terminal 1105 displays the wide area wireless zone 10
When entering 41, the information requested by the user is transmitted to the base station 1 using the uplink wireless channel of the wide area wireless zone 1041.
Request 101. Information requested from the base station 1101 is transmitted to the terminal 110 using the spot radio zone 1042.
Send to 5. At that time, the mobile terminal 1105 notifies the base station 1101 that the spot wireless zone 1042 has been entered. The base station 1101 transmits information to the mobile terminal 1105 in the spot wireless zone 1042 which has been notified.

More specifically, the portable terminal 1105 will be described below.
A method for receiving information requested by the user in the spot wireless zone 1042 will be described.

FIG. 26 shows a block diagram of the terminal. Antenna 2
01, the signal of the wide area wireless zone 1041 is received.
The received signal is subjected to band limitation / amplification /
The signal is down-converted, and the received electric field strength measuring unit 203 measures the received electric field strength. The down-converted signal is demodulated by the modulation / demodulation unit 204, and control data is stored in the control unit 2.
To 05, the user data is passed to the user interface.

The result measured by the received electric field strength measuring unit 203 is passed to the judging unit 206. The determination unit 206 determines whether or not the mobile terminal is within the wide area wireless zone 1041 based on the strength of the received electric field strength. Judge by strength.

That is, the strength of the received electric field strength is measured, and it is determined that the measured received electric field strength has reached the strength level at the time of entering the area. If the measured received electric field strength satisfies this condition, the determination unit 206
Instructs the demodulator 208 for high speed data reception and the high frequency unit 207 to be turned on for reception in the spot radio zone 1042. Demodulator 208 and high frequency unit 20
Since 7 is configured to be turned on by the command to be in the operating state, the command is turned on to be in the operating state.

When the portable terminal ready for high-speed data reception enters the spot wireless zone 1042, the high-speed data receiver receives the signal from the spot wireless area 1042 and recognizes that it has entered the spot wireless area.

Then, the portable terminal passes the message that the control section 205 has entered the spot radio zone 1042 to the modulation / demodulation section 204, and the modulation / demodulation section 204 modulates the message, and the modulated data is updated by the high frequency section 202. After the conversion, amplification, and band limitation processing, the data is transmitted from the antenna 201 to the base station 1101 using the uplink wireless channel of the wide area wireless zone 1041.

As a result, the base station 1101 can identify the spot radio zone 1042 to which the information should be transmitted, and transmits the information. As the mobile terminal moves away from the wide area wireless zone, the value measured by the received electric field strength measuring unit 203 becomes smaller. Then, when the determination unit 206 to which the measured value is input determines that the value satisfies the condition for turning off the power supply of the high-speed data receiver, the high-frequency data high-frequency unit 207 is set to the demodulator 208. The control output for turning off the power is output, and the high-frequency data high-frequency unit 207 that receives the output outputs the respective demodulators 208 to turn off their own power supplies.

(Sixteenth Embodiment) Next, in the wide area wireless zone, the case where the information as to whether or not the spot wireless zone exists in the zone is broadcast is first described.
A sixth embodiment will be described.

The portable terminal 1105 is used in the wide area wireless zone 10
Upon entering 41, the broadcasted information is received, and it is judged whether or not there is a spot wireless zone 1042 in the wide area wireless zone 1041 which is currently entered.

The configuration of the terminal 1105 for that purpose is shown in FIG.
Shown in In FIG. 27, when the broadcast signal of the wide area wireless zone 1041 is received, the received signal is down-converted by the harmonic wave portion 301 and demodulated by the modulation portion 302. If the demodulated signal is a control message,
The control unit 302 analyzes the message. The control unit 302 has a message analysis function, and if there is a message that the spot radio zone is included as a result of the message analysis, the control unit 302 turns on the power of the harmonic unit 304 and the demodulation unit 305. Works like. The subsequent operation is performed in the same manner as the method described in the fifteenth embodiment.

(Seventeenth Embodiment) Next, a seventeenth embodiment will be described. Here, like the system described in the sixteenth embodiment, in the case where a system in which the spot radio zone exists in the wide area radio zone and a system in which the spot radio zone does not exist coexist, further than in the sixteenth embodiment, Describe an efficient battery saving method.

The portable terminal 1105 is used in the wide area wireless zone 10
Upon entering 41, first, the broadcast message is received. At this time, as the first case, the wide area wireless zone 10
The operation of the mobile terminal 1105 when the spot wireless zone 1042 exists at 41 will be described.

When there is desired information, the portable terminal 1105 makes a request by random access on the upstream channel of the wide area wireless zone 1041. Then, the receiver for the small wireless zone (spot wireless zone 1042) is turned on.

If there is no message to be requested, the address of the mobile terminal itself is transmitted and the location is registered.

In that case, the power of the receiver in the small radio zone is kept off.

In the second case, the wide area wireless zone 104
The operation of the mobile terminal when the spot wireless zone 1042 does not exist in 1 will be described.

When there is desired information, the portable terminal 1105 requests the base station 1101 by random access on the upstream channel of the wide area wireless zone 1041. After that, leave the receiver power for the small wireless zone off,
No location registration is performed. The mobile terminal 1105, which has transmitted the information request in the wide area wireless zone 1041 in which the spot wireless zone 1042 does not exist, transmits the previously requested information to the small area in the wide area wireless zone 1042 when it enters the wide area wireless zone 1041 in which the spot wireless zone 1042 exists. Receive using the receiver for the wireless zone.

The method will be described as the third case.

The portable terminal 1105 is used in the wide area wireless zone 10
Entering 41, it is found that the spot radio zone 1042 exists from the broadcast message. However, since the information request has already been issued, only the location registration is performed here. The base station 1101 determines whether or not there is any information that needs to be transmitted to the mobile terminal 1105 whose location has been registered, and if so, the wide area wireless zone 104.
1 informs the mobile terminal 1105. Mobile terminal 1105
When receiving this, turns on the spot radio zone receiver (receiver for the small radio zone).

As described above, according to these embodiments,
The high-speed data receiver, which consumes a lot of power, turns on the power only when it enters the large wireless zone including the small wireless zone, so that very efficient battery saving can be realized. Therefore, the standby time of the mobile terminal can be extended.

Therefore, there is one or a plurality of small wireless zones that provide communication services to mobile terminals, there is a large wireless zone that provides communication services to mobile terminals, and the transmission rate of data transmitted by the small wireless zones. However, in a zone configuration in which the large wireless zone is larger than the transmission rate of data transmitted by the large wireless zone and the large wireless zone covers the small wireless zone, when the mobile terminal receives a signal from the large wireless zone, the mobile terminal receives the message of the large wireless zone. By turning on the power of the receiver and performing battery saving, the high-speed data receiver that consumes a lot of power can be turned on only when entering the large wireless zone including the small wireless zone,
This allows for very efficient battery saving. Therefore, the standby time of the mobile terminal can be extended.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a system to which the present invention is applied.

FIG. 2 is a system conceptual diagram for explaining the first embodiment of the present invention.

FIG. 3 is a procedure diagram for explaining the procedure of the first embodiment of the present invention.

FIG. 4 is a procedure diagram for explaining the procedure of the fourth embodiment of the present invention.

FIG. 5 is a system conceptual diagram for explaining a fifth embodiment of the present invention.

FIG. 6 is a procedure diagram for explaining the procedure of the fifth embodiment of the present invention.

FIG. 7 is a conceptual diagram showing an embodiment of the present invention.

FIG. 8 is a conceptual diagram showing an embodiment of the present invention.

FIG. 9 is a conceptual diagram for explaining an example of the present invention.

FIG. 10 is a diagram illustrating an embodiment of the present invention.

FIG. 11 is a diagram for explaining an example of the present invention.

FIG. 12 is a configuration diagram of a first embodiment of a battery saving system of a wireless terminal device of the present invention.

FIG. 13 is an explanatory diagram of the first embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 14 is a configuration diagram of a second embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 15 is an explanatory diagram of a second embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 16 is a configuration diagram of a third embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 17 is an explanatory diagram of a third embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 18 is a configuration diagram of a fourth embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 19 is an explanatory diagram of the fourth embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 20 is a configuration diagram of a fifth embodiment and a sixth embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 21 is an explanatory diagram of a fifth embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 22 is an explanatory diagram of a sixth embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 23 is an explanatory diagram of the seventh embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 24 is an explanatory diagram of a seventh embodiment of the battery saving system of the wireless terminal device of the present invention.

FIG. 25 is a system configuration diagram according to the present invention.

FIG. 26 is a terminal configuration diagram according to the invention.

FIG. 27 is a terminal configuration diagram according to the present invention.

FIG. 28 is a system conceptual diagram for explaining a conventional wireless communication system.

FIG. 29 is a system conceptual diagram for explaining a conventional wireless communication system.

[Explanation of symbols]

 1, 11 ... Communication network 3, 16 ... Information providing station 4 ... Portable terminal, 12 ... Low speed wireless line base station 13 ... High speed wireless line base station 14 ... Low speed line communicable area 15 ... High speed line communicable area 17 ... low-speed wireless line 18 ... high-speed wireless downlink line 31 ... wireless terminal device 32 ... power supply control unit 33 ... wideband wave receiving circuit 34 ... medium band wave receiving circuit 35, 51 ... narrow band wave receiving circuit 36 ... power supply operation signals 37a to 7c Radio antenna 31 Infrared receiver 32 Infrared signal 71 Inductive coupling coil 72 Power amplifier 81 Electromagnetic induction device 91 Medium band base station 92 Broadband base station 101, 101A, 101B Reception start identification code 102 , 122A, 122B ... Reception end identification code 103, 103A, 103B ... Reception start timing 104, 104A, 104B ... Reception Ryo timing 111A, 111B, 121A, 121B ... receiving data

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsutomu Sugawara 1 Komukai Toshiba Town, Komukai-ku, Kawasaki City, Kanagawa Prefecture Research & Development Center, Toshiba Corp. (72) Inventor Katsuya Komukai, Kouki-ku, Kawasaki City, Kanagawa Prefecture Toshiba Town No. 1 Inside Toshiba Research and Development Center

Claims (8)

[Claims] 1. A system comprising a communication network, a wireless base station connected to the communication network, an information providing station for providing information, and a mobile terminal connected to the communication network via the wireless base station via a wireless line. In the above, the mobile terminal comprises means for detecting that the mobile terminal is located in an area where wireless communication is possible with the radio base station, and when the mobile terminal is used to acquire information from the information providing station, information acquisition is performed in advance. A wireless communication system characterized in that, when a request is set, the mobile terminal acquires and controls the requested information when it enters an area where it can communicate with the wireless base station. 2. A system comprising a communication network, a wireless base station connected to the communication network, an information providing station for providing information, and a mobile terminal connected to the communication network via the wireless base station by a wireless line. In, a means for detecting that the mobile terminal is located in an area where wireless communication is possible, a means for determining whether or not the environment is capable of wireless communication, and a mobile terminal when the information acquisition request is determined in advance. A wireless communication system, comprising: means for controlling acquisition of requested information based on a communication availability determination output of means for determining whether or not an environment capable of wireless communication with the wireless base station. . 3. A system comprising a communication network, a wireless base station connected to the communication network, an information providing station for providing information, and a mobile terminal connected to the communication network via the wireless base station by a wireless line. Wherein the communication network and the mobile terminal are connected by a radio line via one or more radio base stations, and the radio base station and the mobile terminal perform transmission at a first transmission rate. 1 downlink, a second downlink that performs transmission at a second transmission speed that is higher than the first transmission speed, and an uplink radio transmission that performs transmission at a transmission speed that is equivalent to the first transmission speed A wireless communication system comprising at least a line, wherein the communicable area of the first downlink and the uplink is set wider than the communicable area of the second downlink, the second downlink circuit Is provided with a means for detecting that the mobile terminal has entered an area where communication is possible, and when acquiring information from the information providing station using the mobile terminal, the mobile terminal is set when an information acquisition request is set in advance. A wireless communication system, wherein the terminal is configured to acquire and control information requested by the second downlink when the terminal enters the communicable area of the second downlink. 4. A receiving circuit for receiving a wireless transmission wave at a first transmission speed, and a transmitting / receiving circuit for transmitting and receiving a wireless transmission wave at a second transmission speed lower than the first transmission speed. A receiving circuit for receiving a wireless transmission wave at a third transmission speed lower than the second transmission speed, and information of a signal received by the receiving circuit for the wireless transmission wave at the third transmission speed. A wireless terminal device comprising: a control unit having a function of turning on / off a power source of a wireless transmission wave receiving circuit of a first transmission speed and a transmitting / receiving circuit of a wireless transmission wave of a second transmission speed; When the reception at the transmission speed of 1 is in the standby state, only the reception circuit of the wireless transmission wave of the third transmission speed is in the operating state, and the power of the transmission / reception circuit of the wireless transmission waves of the first and second transmission speeds is turned off. And keep it inactive Wireless terminal device according to claim Rukoto. 5. A receiving circuit for receiving a wireless transmission wave at a first transmission speed, and a transmission / reception circuit for transmitting and receiving a wireless transmission wave at a second transmission speed lower than the first transmission speed. Detecting means for identifying that the wireless terminal device is capable of receiving the wireless transmission wave at the first transmission rate,
A wireless terminal device comprising a power supply control unit having a function of turning on / off a power supply of a wireless transmission wave receiving circuit having a first transmission rate by the detection unit, wherein a communication service at the first transmission rate is not provided. In the area, when the power of the receiving circuit for the wireless transmission wave at the first transmission speed is turned off, and in the area where the communication service at the first transmission speed is provided, the detection means detects that it is within the service area. Is configured to perform power-on and reception at a first transmission rate. 6. A reception circuit for receiving a wireless transmission wave at a first transmission speed, and a transmission / reception circuit for transmitting and receiving a wireless transmission wave at a second transmission speed lower than the first transmission speed. A power supply control unit having a function of turning on / off a power supply of a receiving circuit of the wireless transmission wave having the first transmission speed according to reception information at the second transmission speed. The unit activates the receiving circuit of the wireless transmission wave of the first transmission speed by the identification signal transmitted to the wireless terminal device at the second transmission speed immediately before the reception service at the first transmission speed is provided. Then, the wireless terminal device is configured to stop the receiving circuit of the wireless transmission wave of the first transmission speed immediately after the reception service at the first transmission speed is completed. 7. There are one or a plurality of small wireless zones that provide communication services to mobile terminals and a large wireless zone that provides communication services in a wide area, and the transmission rate of data transmitted by the small wireless zones is In a wireless communication system with a zone configuration in which the transmission rate of data transmitted by the large wireless zone is higher than that of the large wireless zone and the small wireless zone is covered, the mobile terminal has a receiver for the large wireless zone and a receiver for the small wireless zone In addition, it has a measurement discriminating means for measuring and discriminating the electric field strength, and normally the receiver for the small radio zone is turned off, and the measurement discriminating means reaches a level capable of receiving a signal from the large radio zone. If it is determined based on the electric field strength, the power of the receiver that receives the message in the large wireless zone is turned on. Temu. 8. When the message indicating the presence or absence of a small zone is broadcast in the large wireless zone, the mobile terminal is a wireless device in the large wireless zone, and the small wireless zone exists. 8. The wireless communication system according to claim 7, wherein a power of a receiver that receives a message in the large wireless zone is turned on when a message indicating "is displayed" is received.