JP2003179981A - Wireless communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide control procedures for efficiently performing information transmission in a wireless communication system having narrow-band uplink and downlink wireless channels and a wide-band downlink wireless channel. <P>SOLUTION: The wireless communication system consists of a narrow-band wireless base station having a narrow-band transmission/reception means for information transmission a wide-band wireless base station having a storage means for storing information destined to a wireless terminal and a wide-band transmission means provided for information transmission including the information, destined to the wireless terminal, and stored in this storage means and a wireless terminal having a narrow-band transmission/reception means for transmitting/receiving information with the narrow-band wireless base station and a wide-band receiving means for receiving the information from the wide- band wireless base station. The system has a function of deleting the information, destined to the wireless terminal, stored in the storage means if at least either the information transmission from the wide-band wireless base station to the wireless terminal or the information transmission between the narrow- band wireless base station and the wireless terminal is disabled. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission control method for a wireless communication system, and more specifically, in a wireless transmission path, SDL (Superhiqh speeded D) which enables higher speed transmission in downlink than in uplink.
The present invention relates to a communication system for performing down link transmission.

[0002]

2. Description of the Related Art With the spread of small-sized and portable information processing / electronic devices, communication functions have been added to these portable devices, and services using various networks have come to be provided.

In general, a communication means to be applied to a small portable electronic device, anytime, anywhere, with anyone, any information, in order to take advantage of the characteristics as a portable type,
It is desirable that the communication means allows easy communication.

As such a communication means, if a public network can be connected and a large number of radio base stations are provided and they are within the service area of these radio base stations, the radio base stations and the radio terminals are provided. It is best to use a wireless communication system such as PHS (Personal Handyphone System; simple mobile phone) or mobile communication system (mobile phone, car phone) that can send and receive information to and from wireless communication. Is. In such a wireless communication system, when the wireless terminal transmits a request signal for communication, the request signal is given to the wireless base station via the uplink wireless channel. As a result, the wireless base station assigns a communication channel, and the wireless terminal can communicate with the other party via the wireless base station using the communication channel. The wireless terminal transmits to the wireless base station via the uplink wireless channel (uplink), and communicates from the wireless base station to the wireless terminal via the downlink wireless channel (downlink).

By the way, in this type of wireless communication system, the amount of information is dramatically increased when multimedia services such as image communication are realized in addition to simple voice communication. When dealing with moving images, it is necessary to be able to transmit a large amount of information in a short time, which requires a wideband channel, which requires high-speed transmission in terms of communication transmission speed. Means

[0006] In particular, when providing multimedia services such as VOD (Video On Demand) and electronic publishing (digitalized newspapers, magazines, books, etc.), it is only necessary to issue a request or confirm a response. The amount of information transmitted on the downlink radio channel is huge compared to the uplink radio channel. Therefore, the downlink radio channel requires high-speed transmission that is incomparable to the uplink radio channel.

That is, a small amount of data such as data for requesting voice or information is transmitted on the upstream radio channel, while a huge amount of data such as images and texts is transmitted on the downstream radio channel. .

However, in the conventional radio communication system, the transmission rates of the uplink radio channel and the downlink radio channel are the same. That is, the transmission rate of the signal transmitted from the wireless terminal and the transmission rate of the signal received by the wireless terminal are set to be the same.

Therefore, if the conventional system configuration is followed, in order to realize a multimedia service in a wireless communication system, both the uplink and downlink radio channels are set to a wide band, and a radio base station and a radio terminal are used. It was necessary to construct a wireless communication system for high-speed transmission between the two.

However, high-speed transmission requires the use of radio waves in a high frequency band, which requires a very large amount of power. Usually, a mobile device on the terminal side uses a storage battery as a power source. Therefore, if the power consumption increases,
Frequent charging work is required on the terminal side, resulting in poor usability. Of course, it is conceivable to increase the battery capacity of the terminal, but increasing the battery capacity not only costs but also causes a problem that the device becomes larger and heavier.

As a wireless communication system for solving such a problem, an SDL system (Japanese Patent Application No. 6-137621) is used.
No.) is proposed. In this SDL system, in order to reduce the power consumption, the wideband transmission means (transmission means with a high transmission speed) on the wireless terminal side is eliminated, the wideband communication is limited to the reception function, and the transmission is performed in a narrow range with low power consumption. This is a configuration having a band (a low transmission speed). As a result, it becomes possible to enable uplink and downlink communication and to reduce the power consumption of the terminal.

[0012]

(First Problem) As described above, in order to realize a multimedia service using a wireless communication system, a wireless channel is set to a wide band and a wireless base station is used. It is necessary to perform high-speed transmission with the wireless terminal. However, high-speed transmission requires the use of radio waves in a high frequency band, which requires a very large amount of power.

Therefore, as a technique for solving this problem, S
A DL system has been proposed. As mentioned above, SD
In the L system, in order to reduce power consumption, wideband transmission means on the wireless terminal side (transmission means with high transmission speed)
, The broadband communication is limited to the receiving function, and the transmission is a narrow band with low power consumption (transmission speed is low).
It is a configuration that is adapted to. As a result, it becomes possible to enable uplink and downlink communication and to reduce the power consumption of the terminal.

Further, the narrow band communication function is provided not only for the upstream (transmission) channel but also for the downstream (reception) channel, and in the case of communication that does not require high-speed transmission, the radio channels above and below this narrow band are used. By using the battery supply control so that the broadband receiving means of the terminal is turned off, the power consumption of the terminal can be further reduced.

As described above, the upper and lower narrow band radio channels are used not only as radio channels for information transmission but also as channels for controlling information transmission using wide band downlink radio channels. If this is possible, it becomes possible to realize efficient information transmission using a wideband downlink radio channel.

However, a transmission control procedure for utilizing the upper and lower radio channels for the narrow band for efficient operation of the information transmission using the downlink radio channel for the wide band has not been provided so far.

(Second Problem) On the other hand, in the SDL system, transmission of narrowband signals and wideband signals requires different transmission distances and allowable error rates, and therefore is used for transmission of narrowband signals. It is considered that the frequency of the wireless carrier is lower than the frequency of the wireless carrier used for transmitting the wideband signal. When a wireless transmitter that actually transmits a narrowband signal is configured, harmonic components with a frequency higher than the oscillation frequency of the oscillator used as the carrier wave from the wireless modulator are generated due to the nonlinearity of elements such as mixers and power amplifiers. Occur. The harmonics are attenuated by the filter function of the duplexer (transmission / reception duplexer), and the structure is such that they are not radiated into the air from the antenna.

However, as shown in FIG. 14, in a device having a structure in which a narrow band transmitter / receiver and a wide band receiver are installed in the same housing, the above-mentioned higher harmonics are not radiated from the antenna. Even in such a case, it may be received by an antenna, a low noise amplifier, or a wiring connecting them on the wide band receiver side due to electrical or magnetic coupling or leakage in the housing.

If this harmonic is the same as the carrier frequency in the radio section or the intermediate frequency section of the wide band receiver, the received wide band signal may not be demodulated correctly. In order to solve such a problem, in the past, electrical
When devices that are inconvenient when magnetic coupling occurs are installed close to each other, a shield that is isolated by an insulator and surrounded by metal is used to isolate both devices and obtain a high attenuation gain. I am allowed to do so.

Therefore, in a terminal equipped with both a narrow band transmitter / receiver and a wide band receiver, there is a problem in that the device added for performing such isolation increases the weight and volume.

(Third Problem) Further, since the wireless terminal has an information processing function and an advanced display function, various services using various networks have come to be available. So, for example, voice, data,
Various types of information such as still images and moving images have come to be transmitted via wireless transmission paths. In order to enable wireless transmission of such various information using one wireless terminal, it is necessary to provide the most suitable transmission method according to the type of information. In the case of wireless, there are at least two methods for performing them, that is, a method of multiplexing various information into one modulated signal or carrier and a method of using different carriers according to the attribute of information.

One of the factors that hinders miniaturization of wireless terminals that should be small is a high-frequency amplifier, and in order to make this high-frequency amplifier small, low-priced, and low in power consumption, different frequencies suitable for each information depending on the information. Alternatively, it is desirable to use a transmission method.

However, if the frequency or the transmission method is different, information that can be transmitted wirelessly and information that is not so are generated even in the same environment. In other words, the type and quality of services that can be provided may differ.

This is because the service area varies greatly depending on the frequency used and the power consumption also varies, so that the services that can be provided differ depending on the remaining battery level. This is also a factor. In addition, the type, quality, and time of services that can be provided when receiving communication services between wireless terminals are not limited to the type, number, quality, and battery level of wireless signals that the terminals can receive, and communication is performed. The type, number, quality, and battery level of wireless signals that can be received by the other terminal also have a large effect. However, conventionally, it has not been possible to determine the type, quality, and time of the service that can be provided in consideration of the state of the partner terminal.

If one does not know what kind of service is currently available from among various available services and what the situation is, perform an operation for using the desired service. For the first time, you can see whether or not you can use it, and you can also see whether the result you used is actually satisfactory and whether it is satisfactory, it becomes a trial and error,
In addition to being inconvenient to use, there is a usage fee for the service, so if the service is unsatisfactory, it is wasteful and uneconomical. Also,
Even though various services are available, an environment will be established in which high-performance wireless terminals can be used anytime without knowing which services are available and what the situation is like. However, this does not mean that anyone can easily use the system, which hinders its spread.

Therefore, it is desired to develop a user-friendly wireless system that enables users of various age groups to easily receive various services using wireless terminals.

(First Object of the Present Invention)
In a communication system such as a system, not only using narrow band upper and lower radio channels as radio channels for information transmission but also using them as channels for controlling information transmission using wideband downlink radio channels. (First problem), in order to realize efficient information transmission using wideband downlink radio channels, the upper and lower radio channels for narrowband are used for wideband. A first object of the present invention is to provide a transmission control procedure to be used for efficient operation of information transmission using the downlink wireless channel of SDL.
In a wireless communication system using a system, when communication using a wideband downlink wireless channel is required, transmission using upper and lower narrowband wireless channels optimal for reducing power consumption on the terminal side A radio communication system having a control procedure and a transmission control method thereof are provided.

(Second Object of the Present Invention) The present invention also relates to S
In a communication system such as a DL system, in order to address the second problem, in a terminal equipped with both a narrow band transceiver and a wide band receiver, an increase in weight and volume due to a device added for performing isolation is suppressed. It is an object of the present invention to provide a communication system that can be reduced in size and weight.

(Third object of the present invention) In order to address the third problem, the present invention enables users of a wide range of age groups to easily receive various services using wireless terminals. The purpose of the present invention is to provide a user-friendly wireless system.

[0030]

In particular, the first and second inventions described below relating to the above (first object of the present invention) are as follows.
The main object is to provide a transmission control procedure for efficiently performing information transmission using a wideband downlink wireless channel by using upper and lower narrowband wireless channels. Also,
In order to receive information via a wideband downlink wireless channel, the wireless terminal requires very high power. Therefore, in order to reduce the power consumption of the wireless terminal, it is indispensable to reduce the information that does not need to use the wideband downlink wireless channel. Therefore, the following description relating to (the first object of the present invention) will be made. Third to fifth inventions provide a wireless communication system for efficiently performing position registration of a wireless terminal with respect to a wideband wireless base station, and a transmission control procedure thereof, thereby reducing power consumption of the wireless terminal. The main focus is on.

Further, in order to efficiently perform information transmission using a wide band downlink wireless channel, when the upper and lower narrow band wireless channels are used, the wireless terminal and the narrow band wireless base station can communicate with each other. If handover occurs (switching of narrowband wireless base stations that occurs when transmission is performed using a broadband downlink radio channel), information transmission using a broadband downlink radio channel cannot be controlled during the handover process. It's a problem. The sixth and seventh inventions described below relating to the above-mentioned (first object of the present invention) are focused on providing a wireless communication system for solving the above problems.

Further, in order to efficiently perform information transmission using the wideband downlink radio channel, when the upper and lower radio channels of the narrowband are used, between the radio terminal and the narrowband radio base station. When handover occurs or the channel is disconnected, information transmission using the wideband downlink radio channel cannot be controlled, and therefore information transmission using the wideband downlink radio channel cannot be performed. In such a situation, transmitting information from the server to the broadband wireless base station is meaningless and useless. Similarly, when the received electric field strength of the information transmitted from the broadband wireless base station is small and the wireless terminal cannot receive the information, it is meaningless and useless to transmit the information from the server to the broadband wireless base station. Therefore, the eighth to eleventh inventions described below relating to the above (first object of the present invention) are focused on providing a wireless communication system for solving the above problems.

Further, in order to efficiently perform information transmission using the wideband downlink radio channel, when the upper and lower radio channels of the narrow band are used, the communication using the upper and lower radio channels of the narrow band is performed. When it becomes impossible, the broadband wireless base station cannot transmit information to the wireless terminal. In such a case, the information for the wireless terminal stored in the buffer in the broadband wireless base station becomes completely unnecessary. Therefore, the twelfth invention described below relating to the above-mentioned (first object of the present invention) is focused on providing a wireless communication system for solving the above problems. Further, since information transmission using a wideband downlink radio channel has a burst-like traffic characteristic, traffic characteristics of upper and lower narrow-band radio channels that control the information transmission also have a burst-like characteristic. In such a situation, another narrow band wireless base station in the vicinity may allocate the same channel to another wireless terminal. As a result, the problem of inter-channel interference arises. A thirteenth invention described below, which is related to the above (first object of the present invention), aims to provide a wireless communication system for solving the above problems.

Further, in order to use the upper and lower narrow band wireless channels as channels for efficiently performing information transmission of the wide band down wireless channel, the upper and lower narrow band wireless channels and the wide band down wireless channel are used. Correspondence between is essential. Therefore, the fourteenth to seventeenth inventions described below relating to the above-mentioned (first object of the present invention) provide a wireless communication system for efficiently associating upper and lower narrow band wireless channels with a wide band downlink wireless channel. The main focus is on doing.

[0035]

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

(1) An object of the first invention is to provide a transmission control procedure for efficiently performing information transmission using a wide band downlink radio channel by using narrow band upper and lower radio channels. And a narrowband wireless base station having a narrowband transmitting / receiving means for information transmission, and a wideband wireless base station having a wideband transmitting means for information transmission,
A wireless communication system comprising a wireless terminal having a narrowband transmitting / receiving means for transmitting / receiving information to / from the narrowband wireless base station and a wideband receiving means for receiving information from the wideband wireless base station. When receiving information from the wideband wireless base station, the wireless terminal is assigned a channel for transmitting and receiving information to and from the narrowband wireless base station.

(2) The second invention is, similar to the first invention, transmission control for efficiently performing information transmission using a wideband downlink radio channel by using narrowband upper and lower radio channels. It is an invention aiming to provide a procedure, a narrow band wireless base station having a narrow band transmitting / receiving means for information transmission, a wide band wireless base station having a wide band transmitting means for information transmission, and In a wireless communication system comprising a narrow band transmitting / receiving means for transmitting / receiving information to / from a narrow band wireless base station and a wide band receiving means for receiving information from the wide band wireless base station, the wide band wireless base is provided. The wireless terminal, to which a channel for receiving information from the station is assigned, cannot release the channel for transmitting and receiving information to and from the narrowband wireless base station. To do.

(3) A third aspect of the present invention provides a wireless communication system for efficiently performing position registration of a wireless terminal with respect to a broadband wireless base station, and a transmission control procedure therefor, thereby reducing power consumption of the wireless terminal. A narrow band radio base station having a narrow band transmission / reception means for information transmission, a wide band radio base station having a wide band transmission means for information transmission, and a predetermined service A wireless terminal having a narrow band transmitting / receiving means for transmitting / receiving information information between the server for providing information and a narrow band wireless base station, and a wide band receiving means for receiving information from the wide band wireless base station. In the wireless communication system, the broadband wireless base station comprises means for notifying the narrowband wireless base station or the server of channels that can be used by the broadband station. Alternatively, the server may use a determination unit that gives the broadband wireless base station permission to use at least one or more channels from among the channels that the broadband wireless base station can use, and the determination unit. It is characterized by further comprising: notifying means for notifying the wideband wireless base station of the judgment result, and storage means for storing the judgment result by the judgment means.

(4) The fourth invention, like the third invention, provides a wireless communication system for efficiently performing position registration of a wireless terminal with respect to a broadband wireless base station, and a transmission control procedure thereof. , A narrow band radio base station having a narrow band transmitting / receiving means for information transmission, and a wide band having a wide band transmitting means for information transmission. A wireless base station, a server for providing a predetermined service, a narrow band transmitting / receiving unit for transmitting / receiving information to / from the narrow band wireless base station, and a wide band for receiving information from the wide band wireless base station. In a wireless communication system including a wireless terminal having a receiving means, the narrowband wireless base station or the server has at least one or more channels for which the broadband wireless base station is permitted to use. Is notified to the wireless terminal.

(5) The fifth invention, like the third invention, provides a wireless communication system for efficiently performing position registration of a wireless terminal to a broadband wireless base station, and a transmission control procedure thereof. , A narrow band radio base station having a narrow band transmitting / receiving means for information transmission, and a wide band having a wide band transmitting means for information transmission. A wireless base station, a server for providing a predetermined service, a narrow band transmitting / receiving unit for transmitting / receiving information to / from the narrow band wireless base station, and a wide band for receiving information from the wide band wireless base station. In a wireless communication system comprising wireless terminals having receiving means, the broadband wireless base station is at least one of which the narrowband wireless base station or the server is permitted to use.
Information is transmitted to the wireless terminal using one or more channels.

(6) A sixth aspect of the present invention is directed to solving the problem of handover, and in order to efficiently perform information transmission using a wideband downlink radio channel, a narrowband upper and lower bands are provided. If a handover occurs between the wireless terminal and the narrowband wireless base station when using the wireless channel of, there is a problem that the information transmission using the wideband downlink wireless channel cannot be controlled during the handover process. An invention to be solved, which is a narrowband radio base station having a narrowband transmission / reception means for information transmission, a wideband radio base station having a wideband transmission means for information transmission, and the narrowband radio base station. Between the narrow band transmitting / receiving means for transmitting / receiving information between the wide band wireless base station and the wide band receiving means for receiving information from the wide band wireless base station. In a wireless communication system for measuring a received electric field strength of a signal transmitted from a band wireless base station, and performing a handover process of a narrow band wireless base station when the measurement result is smaller than a predetermined threshold level, The terminal changes the threshold level when receiving information from the broadband wireless base station.

(7) A seventh aspect of the present invention is intended to solve the problem of handover, and in order to efficiently perform information transmission using a wideband downlink radio channel, a narrowband upper and lower band is provided. If a handover occurs between the wireless terminal and the narrowband wireless base station when using the wireless channel of, there is a problem that the information transmission using the wideband downlink wireless channel cannot be controlled during the handover process. An invention to be solved, which is a narrowband radio base station having a narrowband transmission / reception means for information transmission, a wideband radio base station having a wideband transmission means for information transmission, and the narrowband radio base station. Comprises a narrow band transmitting / receiving means for transmitting / receiving information between the wide band wireless base station and a wide band receiving means for receiving information from the wide band wireless base station, wherein the wireless terminal is the narrow band. In the radio communication system for measuring the received electric field strength of the signal transmitted from the local radio base station, and performing the handover processing of the narrow band radio base station when the measurement result is smaller than a predetermined threshold level, The wireless terminal performs the handover process when it has not received information from the broadband wireless base station.

(8) An eighth invention is an invention for saving power by preventing waste of information transmission using a wideband downlink radio channel when a handover occurs or the channel is disconnected. In order to efficiently perform information transmission using the downlink wireless channel of, when a wireless channel above and below the narrow band is used, a handover may occur between the wireless terminal and the narrow band wireless base station, When the channel is disconnected, information transmission using the broadband downlink radio channel cannot be controlled, so information transmission using the broadband downlink radio channel cannot be performed.In such a situation, information is transmitted from the server to the broadband radio base station. Is completely meaningless and wasteful, and similarly, if the field strength of the information transmitted from the broadband wireless base station is too small for the wireless terminal to receive, Since it is meaningless and wasteful to transmit information to the broadband wireless base station from the above, it is an invention aimed at eliminating such waste, and it is a narrow band transmission / reception for information transmission. Means for transmitting information between a narrowband wireless base station having means, a broadband wireless base station having broadband transmitting means for information transmission, a server for providing a predetermined service, and the narrowband wireless base station. In a wireless communication system comprising a wireless terminal having a narrow band transmitting / receiving means for transmitting / receiving and a wide band receiving means for receiving information from the wide band wireless base station, the wireless terminal is transmitted from the narrow band wireless base station. The received electric field strength of the signal is measured, and when the measurement result is smaller than a predetermined threshold level, the wireless terminal transmits information from the server to the broadband wireless base station. And transmitting a signal for stopping.

(9) The ninth invention is an invention for saving power by preventing waste of information transmission using a wideband downlink radio channel when a handover occurs or a channel is disconnected. In order to efficiently perform information transmission using the downlink wireless channel of, when a wireless channel above and below the narrow band is used, a handover may occur between the wireless terminal and the narrow band wireless base station, When the channel is disconnected, information transmission using the broadband downlink radio channel cannot be controlled, so information transmission using the broadband downlink radio channel cannot be performed.In such a situation, information is transmitted from the server to the broadband radio base station. Is completely meaningless and wasteful, and similarly, if the field strength of the information transmitted from the broadband wireless base station is too small for the wireless terminal to receive, Since it is meaningless and wasteful to transmit information to the broadband wireless base station from the above, it is an invention aimed at eliminating such waste, and it is a narrow band transmission / reception for information transmission. Means for transmitting information between a narrowband wireless base station having means, a broadband wireless base station having broadband transmitting means for information transmission, a server for providing a predetermined service, and the narrowband wireless base station. The wireless terminal comprises a narrow band transmitting / receiving means for transmitting / receiving and a wide band receiving means for receiving information from the wide band wireless base station, and the wireless terminal is a receiving electric field of a signal transmitted from the narrow band wireless base station. In a wireless communication system that measures strength and performs handover processing of a narrowband wireless base station when the measurement result is smaller than a predetermined handover threshold level. , The threshold level according to claim 8 is equal to the handover threshold level, or, being greater.

(10) A tenth aspect of the invention is an invention for saving power by preventing waste of information transmission using a wideband downlink radio channel when a handover occurs or the channel is disconnected. In order to efficiently perform information transmission using the downlink wireless channel of, when a wireless channel above and below the narrow band is used, a handover may occur between the wireless terminal and the narrow band wireless base station, When the channel is disconnected, information transmission using the broadband downlink radio channel cannot be controlled, so information transmission using the broadband downlink radio channel cannot be performed.In such a situation, information is transmitted from the server to the broadband radio base station. Is meaningless and useless. Similarly, when the received electric field strength of the information transmitted from the broadband wireless base station is too small for the wireless terminal to receive, Since it is meaningless and wasteful to transmit information from the mobile station to the broadband wireless base station, the invention aims at eliminating such waste,
A narrow band wireless base station having a narrow band transmitting / receiving means for information transmission, a wide band wireless base station having a wide band transmitting means for information transmission, a server for providing a predetermined service, and the narrow band. In a wireless communication system comprising a wireless terminal having a narrowband transmitting / receiving means for transmitting / receiving information to / from a wireless base station and a wideband receiving means for receiving information from the wideband wireless base station, the wireless terminal is the The reception electric field strength of the signal transmitted from the broadband wireless base station is measured, and when the measurement result is smaller than a predetermined threshold level, the wireless terminal transmits information from the server to the broadband wireless base station. It is characterized by transmitting a signal for stopping.

(11) The eleventh invention is an invention for saving power by preventing waste of information transmission using a wideband downlink radio channel when a handover occurs or the channel is disconnected, In order to efficiently perform information transmission using the downlink wireless channel of, when a wireless channel above and below the narrow band is used, a handover may occur between the wireless terminal and the narrow band wireless base station, When the channel is disconnected, information transmission using the broadband downlink radio channel cannot be controlled, so information transmission using the broadband downlink radio channel cannot be performed.In such a situation, information is transmitted from the server to the broadband radio base station. Is meaningless and useless. Similarly, when the received electric field strength of the information transmitted from the broadband wireless base station is too small for the wireless terminal to receive, Since it is meaningless and wasteful to transmit information from the mobile station to the broadband wireless base station, the invention aims at eliminating such waste,
A narrow band wireless base station having a narrow band transmitting / receiving means for information transmission, a wide band wireless base station having a wide band transmitting means for information transmission, a server for providing a predetermined service, and the narrow band. The wireless terminal comprises a narrow band transmitting / receiving means for transmitting / receiving information to / from a wireless base station and a wide band receiving means for receiving information from the wide band wireless base station, wherein the wireless terminal is transmitted from the wide band wireless base station. The threshold level according to claim 10 in a wireless communication system for measuring a received electric field strength of a signal and performing a handover process of the broadband wireless base station when the measurement result is smaller than a predetermined handover threshold level. The handover threshold level is equal to or larger than the handover threshold level.

(12) In the twelfth invention, in order to efficiently perform information transmission using a wideband downlink radio channel,
In the case where the upper and lower radio channels of the narrow band are used and the communication using the upper and lower radio channels of the narrow band becomes impossible, the broadband wireless base station cannot transmit information to the wireless terminal. The present invention is an invention for coping with the situation that information destined for the wireless terminal stored in the buffer in the broadband wireless base station becomes completely unnecessary, and has a narrow band transmission / reception means for information transmission. Band wireless base station, wideband wireless base station having wideband transmitting means for information transmission and storage means for storing information, and narrowband for transmitting and receiving information to and from the narrowband wireless base station In a wireless communication system comprising a wireless terminal having a transmitting / receiving means and a broadband receiving means for receiving information from the broadband wireless base station, the broadband wireless base station to the wireless terminal Information addressed to the wireless terminal stored in the storage means when at least one of the information transmission between the narrow band wireless base station and the wireless terminal is disabled. Is erased.

(13) The thirteenth invention is an invention for coping with the fact that the information transmission using the broadband downlink radio channel has a burst traffic characteristic, and the information using the broadband downlink radio channel. Since the transmission has bursty traffic characteristics, the traffic characteristics of the radio channels above and below the narrow band that control it also become bursty, and in such a situation, other narrow band wireless base stations in the vicinity may As a result of assigning the same channel to wireless terminals, the purpose is to deal with the situation of inter-channel interference problem, narrow band wireless base station having a narrow band transmitting and receiving means for information transmission, A broadband wireless base station having broadband transmitting means for information transmission, and a narrowband transceiver for transmitting and receiving information to and from the narrowband wireless base station. And a wireless terminal having a broadband receiving means for receiving information from the broadband wireless base station, and a wireless transmission path between the narrowband wireless base station and the wireless terminal is time-divided at equal intervals. In a wireless communication system in which a frame is composed of a plurality of slots, when the wireless terminal receiving information from the wideband wireless base station transmits / receives information to / from the narrowband wireless base station, It is characterized in that a specific time slot is used among the time slots.

(14) A fourteenth invention is intended to provide a wireless communication system for efficiently associating a narrow band upper and lower radio channels with a wide band downlink radio channel, which is used for information transmission. Narrow band wireless base station having narrow band transmitting / receiving means, wide band wireless base station having wide band transmitting means for information transmission, and narrow band transmitting / receiving for transmitting / receiving information to / from the narrow band wireless base station Means and a wireless terminal having a broadband receiving means for receiving information from the broadband wireless base station, wherein a wireless transmission path between the narrowband wireless base station and the wireless terminal is time-divided at equal intervals. A first frame is composed of a plurality of one time slots, and one second time slot in which a wireless transmission path from the broadband wireless base station to the wireless terminal is time-divided at equal intervals. In the wireless communication system in which the second frame is composed of a plurality of frames, the time length of the second frame is an integral multiple of the time length of the first frame.

(15) A fifteenth aspect of the invention is to provide a wireless communication system for efficiently associating a narrow band upper and lower radio channels with a wide band downlink radio channel for information transmission. Narrow band wireless base station having a narrow band transmitting and receiving means, a wide band wireless base station having a wide band transmitting means for information transmission, and a narrow band for transmitting and receiving information to and from the narrow band wireless base station. A wireless terminal having a transmitting / receiving means and a wideband receiving means for receiving information from the wideband wireless base station, and a wireless transmission path between the narrowband wireless base station and the wireless terminal is time-divided at equal intervals. A first frame is composed of one or a plurality of first time slots, and a second time slot in which a wireless transmission path from the broadband wireless base station to the wireless terminal is time-divided at equal intervals. Second lot for one or more lots
In the wireless communication system in which the first time slot and the second time slot are associated with each other, at least one or more first time slots are assigned to the wireless terminal. When receiving information from the broadband wireless base station, a second time slot corresponding to the at least one first time slot is assigned.

(16) A sixteenth invention is intended to provide a radio communication system for efficiently associating a narrow band upper and lower radio channels with a wide band downlink radio channel, and is intended for information transmission. Narrow band wireless base station having narrow band transmitting and receiving means, wide band wireless base station having wide band transmitting means for information transmission, and narrow band for transmitting and receiving information between the narrow band wireless base station A wireless terminal having a transmitting / receiving means and a broadband receiving means for receiving information from the broadband wireless base station, and a wireless transmission path between the narrow band wireless base station and the wireless terminal is time-divided at equal intervals. A first frame is composed of one or a plurality of first time slots, and a wireless transmission path from the broadband wireless base station to the wireless terminal is time-divided into two equal time divisions. Time slot In a wireless communication system in which the second frame is composed of one or more packets,
When the broadband wireless base station transmits information, the narrowband wireless base station uses a first time slot, and a second time slot used by the broadband wireless base station and a destination of the information. It is characterized by notifying at least one of the wireless terminals.

(17) A seventeenth invention is intended to provide a wireless communication system for efficiently associating a narrow band upper and lower radio channels with a wide band downlink radio channel, which is used for information transmission. Narrow band wireless base station having narrow band transmitting / receiving means, wide band wireless base station having wide band transmitting means for information transmission, and narrow band transmitting / receiving for transmitting / receiving information to / from the narrow band wireless base station Means and a wireless terminal having a broadband receiving means for receiving information from the broadband wireless base station, wherein the wireless transmission path between the narrowband wireless base station and the wireless terminal is time-divided at equal intervals. A first frame is composed of one time slot or a plurality of time slots, and a second time slot in which a wireless transmission path from the broadband wireless base station to the wireless terminal is time-divided at equal intervals. In a wireless communication system in which a second frame is composed of a plurality of packets and the narrowband wireless base station notifies the wideband wireless base station of the start time of the first frame, the start time of the first frame Is notified by using a line fixedly assigned between the narrow band wireless base station and the wide band wireless base station.

(Operation) A radio terminal which wants to receive information from a server using a wide band downlink radio channel transmits an information request signal by random access using a narrow band uplink radio channel. Narrow band wireless base station that received this,
The narrow band upper and lower radio channels are allocated to the radio terminal. Further, the information request signal is sent to the server via the network. The server instructs the broadband wireless base station to allocate a broadband downlink wireless channel after the upper and lower narrow band wireless channels have been assigned to the wireless terminal, and the broadband wireless base station which has received the instruction instructs the broadband wireless base station to perform the wireless communication. A wideband downlink radio channel is assigned to the terminal. This allows the wireless terminal to receive information from the server using a wideband downlink wireless channel. Further, the upper and lower narrow band radio channels can be used as control channels for controlling information transmission using the wideband downlink channel, and as a result, information transmission using the wideband downlink channel can be efficiently performed. It will be possible.

In order to achieve the second object, according to the present invention, in the above-mentioned fourteenth invention to seventeenth invention, the terminal receives the data of the second time slot by the broadband receiving means. Allocation of first and second time slots or first and second frames so that the terminal does not transmit the control signal in the first time slot by the narrow band transmission / reception means within the period. Is controlled, or the transmission time of the terminal is controlled.

In the present invention, a narrow band radio transmitter / receiver and a wide band radio receiver are installed in the same housing such as a terminal, and harmonics generated in the narrow band transmitter do not affect reception of a wide band signal. In order to prevent an increase in weight and volume due to a shield provided between the narrow band wireless transceiver and the wide band wireless receiver, while the wide band wireless base station is transmitting a wide band signal to the terminal, It is basically that the narrowband signal is not transmitted from the terminal, and within the period when the terminal receives the data of the second time slot by the wideband receiving means, the terminal by the narrowband transmitting / receiving means is The first and second time slots are assigned, or the start times of the first and second frames or the transmission of the terminal are performed so that the control signal is not transmitted in the first time slot. It was to control the time.

As a result, during the reception period of the wideband signal, since there is no transmission of the narrowband signal, the harmonics generated in the narrowband transmitter have no influence on the reception of the wideband signal, and therefore the terminal is shielded. It becomes possible to prevent an increase in weight and volume due to the application of such as.

Further, in order to achieve the third object, the present invention corresponds to a communication system using a single or a plurality of types of wireless signals, and a single or a plurality of types for receiving a single or a plurality of types of wireless signals. A wireless device having a plurality of receivers is provided with an informing unit for informing at least one of the types, qualities, and times of services that can be wirelessly provided. As a result, it becomes possible for anyone to easily recognize the type, quality, time, etc. of available services, and the usability is dramatically improved.

[0058]

BEST MODE FOR CARRYING OUT THE INVENTION Specific examples of the present invention will be described below.

(Example of Configuration of Wireless Communication System) The configuration of the wireless communication system required to implement the present invention will be described. FIG. 1 is a conceptual diagram showing a configuration of a system according to the present invention, which is a configuration taking an SDL system as an example.

In FIG. 1, 100 is a wireless terminal (wireless mobile station), 101 is a wideband wireless base station, and 102 is a narrowband wireless base station. Further, 103 is a server (or database) for providing a predetermined service such as storing a huge amount of information and providing the information, and these broadband wireless base station 101, narrowband wireless base station 102,
The server 103 is connected via the network 104.

The wideband wireless base station 101 is a base station having a wireless transmitting means for a wideband wireless channel (a wireless channel capable of high-speed transmission), and does not have a wideband receiving means. Further, since the broadband transmission is performed, the used frequency has a short wavelength and the service area is narrow.

The narrow band wireless base station 102 is a base station having a wireless transmitting / receiving means for a narrow band wireless channel (low speed transmission wireless channel). Since the transmission is performed in a narrow band, the service area can be widened with less power.

As shown in FIG. 2, the wireless terminal 100 has a wideband wireless channel receiving means 100a, a narrowband wireless channel wireless transmitting / receiving means 100b, a control section 100c for controlling various controls, and antennas 100d and 100e.
Is equipped with. However, the wireless terminal 100 does not include a wideband wireless channel transmission unit. That is, the wireless terminal 100, which is a wireless mobile station, is operated by the narrowband wireless base station 10
Information can be transmitted and received to and from the wireless communication device 100b by the wireless transmission / reception device 100b.
Since it has only 00a, it is a terminal that can only perform reception with the broadband wireless base station 101.

In this specific example, a case will be described as an example where information transmission between the radio terminal 100 and the narrowband radio base station 102 is performed by the time division multiple access system. Here, the time division multiple access method is a technique for dividing the frequency channel in the time domain so that the signals do not overlap in time because a plurality of wireless terminals 100 use the same frequency channel. This is a method in which a frame (a fixed length of time) that becomes a basic cycle is determined and a signal is transmitted using a time position (hereinafter referred to as a time slot) assigned in this frame.

Therefore, in the time division multiple access system,
“A channel is allocated for the wireless terminal 100 to perform information transmission with the narrow band wireless base station 102.”
Means that “a time slot is assigned to the wireless terminal 100”.

A concrete frame configuration example between the radio terminal 100 and the narrow band radio base station 102 will be briefly described below. As shown in FIG. 3, the frame 200 has eight
It is divided into eight time slots 201a to 201h. Of these, the first four time slots 201
a to 201d are downlink radio channels (narrowband radio base station 1
02 to the wireless terminal 100),
The latter four time slots 201e to 201h are uplink radio channels (from the radio terminal 100 to the narrow band radio base station 102).
(For transmission to).

Also, the time slots 201a to 201h
Among them, “201a” and “201e”, “201b” and “201f”, “201c” and “201g”, “201
"d" and "201h" are paired, and the upper and lower sides are 1
Used as a set of time slots. Further, the time slots 201a and 201e are used as control time slots for random access and responses (Ack signals) to the random access, and the time slots 201b to 201d and 20e are used.
1f to 201h are used as communication time slots for transmitting information such as voice and small capacity data.

In FIG. 1, the wideband radio base station 101 and the narrowband radio base station 102 are distinguished from each other for the sake of convenience, but one radio base station has a transmitting / receiving means for transmitting narrowband information and wideband information. It may be configured to include both transmission means for transmission. In this case, although the cost of the wireless base station increases, the total number of wireless base stations in the entire system can be reduced. Further, when control is required between the transmitting / receiving means for narrow band information transmission and the transmitting means for wide band information transmission, there is an advantage that the control becomes easy.

A specific example of the present invention will be described below using the configuration of FIG. 1 in which the wideband radio base station 101 and the narrowband radio base station 102 are different radio base stations. The wireless terminal 1
00 is a narrow band wireless base station 102 and a wide band wireless base station 10
The wireless terminal 100 is located in both service areas of 1 and is capable of transmitting and receiving information between the wireless terminal 100 and the narrowband wireless base station 102.
01 shall be able to receive the information.

A specific example of the present invention relating to a transmission control procedure for a wireless communication system having such a system configuration will be described below.

The first concrete example relates to the first to thirteenth inventions, and the second concrete example relates to the fourteenth to seventeenth inventions.

(First Specific Example) The first specific example provides a transmission control procedure for efficiently performing information transmission using a wide band downlink wireless channel by using narrow band upper and lower wireless channels. The purpose is to do.

Further, in order to receive information via the wide band downlink radio channel, the radio terminal requires very large power. Therefore, in order to reduce the power consumption of the wireless terminal, it is indispensable to reduce the information that does not need to use the wideband downlink wireless channel. Therefore, in order to be able to deal with this as well, the first specific example provides a wireless communication system for efficiently performing position registration of a wireless terminal with respect to a broadband wireless base station, and a transmission control procedure thereof. It is provided to reduce the power consumption of the wireless terminal.

Further, in order to efficiently perform information transmission using a wide band downlink radio channel, when the upper and lower narrow band radio channels are used, between the wireless terminal and the narrow band radio base station. When a handover occurs, information transmission using a wideband downlink radio channel cannot be controlled during the handover process, which is a problem. Therefore, the first specific example can deal with this.

Further, in order to efficiently perform information transmission using the wideband downlink radio channel, when the upper and lower radio channels of the narrowband are used, between the radio terminal and the narrowband radio base station. When handover occurs or the channel is disconnected, information transmission using the wideband downlink radio channel cannot be controlled, and therefore information transmission using the wideband downlink radio channel cannot be performed.

Information transmission from the server to the broadband wireless base station in this situation is meaningless and useless. Similarly, when the received electric field strength of the information transmitted from the broadband wireless base station is small and the wireless terminal cannot receive the information, it is meaningless and useless to transmit the information from the server to the broadband wireless base station. Therefore, the first specific example can deal with this.

Further, in order to efficiently perform information transmission using the wide band downlink radio channel, when the upper and lower narrow band wireless channels are used, the communication using the narrow narrow band upper and lower bands is performed. When it becomes impossible, the broadband wireless base station cannot transmit information to the wireless terminal. In such a case, the information for the wireless terminal stored in the buffer in the broadband wireless base station becomes completely unnecessary. Therefore, the first specific example can deal with this.

Further, since the information transmission using the wideband downlink radio channel has a burst-like traffic characteristic, the traffic characteristics of the upper and lower radio channels of the narrow band for controlling the information also become bursty. In such a situation, another narrow band wireless base station in the vicinity may allocate the same channel to another wireless terminal. as a result,
The problem of inter-channel interference arises. Therefore, the first specific example can deal with this.

The details of the first specific example will be described below. The wireless terminal 100, which wants to receive information from the server 103 using the broadband downlink wireless channel, uses the time slot 201e.
To transmit the information request signal by random access. When the random access succeeds and the information request signal is correctly received by the narrowband wireless base station 102, the narrowband wireless base station 102 allocates a communication time slot to the wireless terminal 100. Alternatively, the line connection request signal is transmitted by random access, the line connection request signal is correctly received by the narrowband wireless base station 102, and the communication time slot is assigned, and then the information request signal is transmitted.

Communication time slot allocation methods are roughly classified into two types.

As a first allocation method, a time slot used when performing communication using a wide band downlink radio channel and a wide band downlink radio channel are not used, but only upper and lower narrow band radio channels are used. This is a method of allocating time slots that are used during communication (for example, voice communication) to different time slots.
As a second allocation method, a time slot for performing communication using a wideband downlink wireless channel,
There is a method of allocating time slots for performing communication using only upper and lower radio channels of a narrow band to the same time slot, that is, a method of sharing one time slot.

First, the first allocation method will be described in detail. The narrowband wireless base station 102 checks whether there is an unused time slot, and if there is an unused time slot,
An appropriate time slot is assigned to the wireless terminal 100 from the time slots, and the result is notified to the wireless terminal 100 using the time slot 201a.

When there is no unused time slot, the time slot 201a is used to inform the radio terminal 100 that the service cannot be provided, and the radio terminal 100 receiving this informs the information request signal again after waiting for a while. Alternatively, a line connection request signal is transmitted. Alternatively, the narrowband wireless base station 102 informs the wireless terminal 100 that it is waiting for a service to be provided, using the time slot 201a.

The radio terminal 100, which understands this, uses the time slot 201e to transmit a signal meaning to wait for the order of providing the service, and the narrow band radio base station 102
Wait for communication time slot allocation from. When an unused time slot occurs, the narrow band wireless base station 102
Time slots are assigned to the wireless terminal 100, and the result is notified to the wireless terminal 100 using the time slot 201a.

Next, the narrow band wireless base station 102 executes the following procedure in order to allocate a wide band downlink channel to the wireless terminal 100 to which the time slot for communication has been allocated. First, the narrowband wireless base station 102 sends an information request signal to the server 103. The server 103 checks whether or not the wireless terminal 100 has registered its position with the broadband wireless base station 101, and if the position has already been registered,
The broadband wireless base station 101 is instructed to allocate a broadband downlink wireless channel to the wireless terminal 100.
If location registration has not been performed, a broadband downlink radio channel is assigned after location registration.

In the wideband radio base station 101, all the frequencies that can be used by the own station are set in the narrowband radio base station 10
2 or notification means 11 for notifying the server 103
0 is set, and the narrow band wireless base station 102 or the server 10
3, a determination unit 111 that gives permission to use the specific frequency to the broadband wireless base station 101, and a notification unit 11 that notifies the broadband wireless base station 101 of the frequency to which the permission has been given.
By including 2 and the storage means 113 for storing the frequency to which the use permission is given, the system configuration can efficiently perform the position registration with respect to the broadband wireless base station 101.

The specific procedure is as follows. First,
The broadband wireless base station 101 checks the frequencies that it can use. Then, the broadband wireless base station 101 notifies the narrowband wireless base station 102 or the server 103 of the checked result by the notifying means 110 of its own.

On the other hand, the narrow band radio base station 10 receiving this
2 or in the server 103, the determination means 111 of the server 103 gives permission to use the specific frequency to the broadband wireless base station 101, and the notification means 112 transmits the result to the broadband wireless base station 101, and the narrowband wireless base station The station 102 or the server 103 stores the result in the storage means 113. In addition, the above procedure is periodically repeated to update new data.

By doing so, the broadband wireless base station 101 can recognize the frequency permitted to be used by itself, and the narrow band wireless base station 102 or the server 1
03 can store the frequency used in the broadband wireless base station 101.

Under such a condition, the wireless terminal 100
When it becomes necessary for the broadband wireless base station 101 to perform location registration, the narrowband wireless base station 102 uses the narrowband downlink wireless channel to use the broadband wireless base station 101 located in the service area of the local station. The wireless terminal 100 is notified or notified of the frequency to be used.

On the other hand, the broadband wireless base station 101 broadcasts a signal for identifying its own station (hereinafter referred to as a base station ID) by using the frequency permitted to be used by itself. . The wireless terminal 100 scans only the frequencies used by the broadband wireless base station 101 notified or notified by the narrowband downlink wireless channel, and the broadband wireless base station 10
It receives the base station ID from 1 and performs location registration.

As a result, the radio terminal 100 side does not need to scan all frequencies to receive the base station ID, and the location registration procedure can be made efficient.

In this way, the broadband wireless base station informs the narrowband wireless base station or the server of the frequencies that it can use, and the narrowband wireless base station or the server selects one of these frequencies. It is necessary for the wireless terminal to perform position registration with the broadband wireless base station by using the licensed frequency to broadcast a signal (base station ID) for identifying itself. When it occurs, the narrowband wireless base station uses the narrowband downlink wireless channel to notify or notify the wireless terminal of the frequency used by the wideband wireless base station located in the service area of the own station, The wireless terminal scans only the frequency used by the wideband wireless base station obtained by the narrowband downlink wireless channel, receives the base station ΙD from the wideband wireless base station, and registers the location. It was to carry out.

As a result, the wireless terminal 100 does not need to scan all the frequencies used by the broadband wireless base station in order to receive the base station ID from the broadband wireless base station, and only the specific frequency is received and monitored. All that is required is to improve the efficiency of the location registration procedure.

In the above example, the broadband wireless base station 10
As a means for efficiently performing location registration for the wireless terminal 1, the frequency used by the broadband wireless base station 101 is set to the wireless terminal 100.
However, there is also a method of giving the wireless terminal 100 a time timing (for example, a time slot) for notifying the base station ID in addition to the frequency.

In this case, the narrow band wireless base station 102 sets the time slot which the wide band wireless base station 101 can use in its own station.
Alternatively, the means for notifying the server 103, the narrowband wireless base station 102 or the server 103 grants each broadband wireless base station 101 permission to use a specific time slot, and the broadband wireless access to the time slot for which the usage permission has been granted. A means for notifying the base station 101 and a means for storing the time slot for which the use permission is given may be provided. Since the specific procedure is the same as the method described above, duplicate description will be omitted.

When this method is used, the radio terminal 100 can make a base station ID only in a specified specific time slot.
The wireless terminal 100 can be reduced in power consumption because the receiver can be turned off in the other time slots.

The method of combining the above examples and giving both the frequency to be used and the time slot to the wireless terminal 100 enables more efficient location registration.

Similarly, when the code division multiple access method is used in the wide band downlink wireless channel, the wide band wireless base station 101 notifies the narrow band wireless base station 102 or the server 103 of the code that can be used by itself. Means, the narrowband wireless base station 102 or the server 103 gives each wideband wireless base station 101 permission to use a specific code, and the narrowband wireless base station 10 assigns the use permitted code to the wideband wireless base station 10.
1 may be provided, and a means for storing the code to which the use permission is given may be stored. Here, the specific procedure is also the same as the method described above, and thus the duplicate description will be omitted.

Now, the broadband wireless base station 101, which has received the instruction to allocate the broadband wireless channel from the server 103 or the narrowband wireless base station 102 in this way,
A wideband downlink radio channel is assigned to the radio terminal 100, and the result is assigned to the radio terminal 100 using the communication time slot already assigned.
To notify.

In this way, the radio terminal 10 to which the upper and lower radio channels (time slots) of the narrow band are allocated
A wideband downlink channel can be assigned to 0. Therefore, when a request for transmitting desired information is issued to the server side using a narrowband upstream radio channel, the requested information is transmitted from the server side. To the broadband wireless base station,
The broadband wireless base station transmits the information using the broadband downlink channel assigned to the radio terminal 100, so that the radio terminal 100 can receive desired information through the broadband downlink radio channel. Become.

By the way, when information transmission is performed by the downlink radio channel, the upper and lower radio channels (communication time slots) of the narrow band are controlled to efficiently control the information transmission by the wide band downlink channel. It can be used as a channel for signal transmission.

For example, ARQ (Automatic Repeat) is performed by using a communication time slot of a narrow band upstream radio channel.
t Request: a control signal for retransmission control) or an Ack signal is transmitted, and a power control signal or information for power saving of the wireless terminal 100 is transmitted in the communication time slot of the narrow band downlink wireless channel. A signal notifying which wireless terminal is addressed, a signal notifying which channel information is transmitted, and the like are transmitted.

Even in the case of performing such transmission control, the wireless terminal 1 that performs communication via the wideband downlink wireless channel
It is obvious that 00 must be assigned to upper and lower narrow band radio channels.

In the first allocation method described above, a case has been described where different time slots are allocated to a plurality of wireless terminals 100 that perform communication using a wideband downlink wireless channel. Next, the first allocation method will be described. As another type of the allocating method, a case will be described in which the same time slot is allocated to a plurality of wireless terminals 100 that perform communication using a wideband downlink wireless channel. However, even in this case, the same time slot is not shared with the wireless terminal 100 that receives a service (voice communication or the like) that uses only the upper and lower narrow band wireless channels without using the wide band downlink wireless channel. Absent.

[When the same time slot is assigned to a plurality of wireless terminals 100 that perform communication using a wideband downlink wireless channel] In the following, for simplification, the wireless terminal 1 that receives a service using a wideband downlink wireless channel is described.
The time slot assigned to 00 is referred to as a wideband time slot, but the wideband time slot referred to here is not necessarily assigned exclusively to a wireless terminal that uses a wideband downlink wireless channel. Not a timeslot.

Upon receiving the information request signal from the wireless terminal 100, the narrow band wireless base station 102 checks whether there is a time slot used as a wide band time slot.

As a result, if there is a time slot used as a wide band time slot, that wide band time slot is also assigned to the wireless terminal that has transmitted the information request signal, and the result is assigned to the time slot 20.
Notify using 1a.

If there is no time slot used as a broadband time slot, it is checked whether or not there is an unused time slot.

Then, if there is an unused time slot, an appropriate time slot is newly allocated as a wide band time slot from among them, and the result is notified to the radio terminal 100 using the time slot 201a.

Further, when there is no time slot used as a wide band time slot, as a result of checking whether or not there is an unused time slot, if there is no unused time slot, the wireless communication is carried out similarly to the above-mentioned method. Terminal 100
To the time slot 20 that the service cannot be provided to the
Communicate using 1a.

Subsequent means for allocating a wide band downlink radio channel is the same as the above-mentioned procedure, and therefore the duplicated description will be omitted. Further, in the above-described example, all the communication time slots can be wideband time slots, but it is also possible that only a certain specific time slot can be a wideband time slot. That is, a time slot that can be used as a wideband time slot is determined in advance, and for a wireless terminal 100 that wants to receive a service using a wideband downlink wireless channel,
This is a method of immediately allocating the time slot.

Although this method allocates time slots from other time slots to the wireless terminal 100 that uses only the upper and lower wireless channels of the narrow band,
When a request for a service that does not use the wideband downlink radio channel occurs while all the other time slots are in use, this time slot is assigned. This is because this time slot is not a dedicated time slot for wideband time slots.

As described above, when a certain specific time slot is preferentially assigned to the wide band time slot, the following effects can be obtained.

Considering the form of a communication service using a wideband downlink radio channel, the following services can be given as examples. First, the user transmits an information request signal, and the server 104 receiving the signal transmits the requested information via a wideband downlink radio channel. The user then processes the information received. While processing information, no signal is transmitted over the wireless channel. Then, when more information is needed, the user transmits the information request signal again, and receives the required information from the server 104 via the broadband downlink wireless channel (see FIG. 4).

Therefore, in the case of such a service, while the user is processing the information, there is no signal transmitted through the upper and lower radio channels of the narrow band, so that the traffic is bursty. I can say. In other words, it can be said that the use of wideband time slots becomes bursty.

In such a case, another narrow band radio base station 1
When viewed from 02, the wideband time slot may appear as if it is unused. As a result, another narrowband radio base station 102 may erroneously perform channel allocation that causes interchannel interference in the wideband time slot.

However, if a specific time slot is preferentially assigned to the wide band time slot, the above problem can be solved. This is because it is known in advance which time slot is the wideband time slot, and therefore it is sufficient to provide the narrowband wireless base station 102 with means for not performing channel assignment that causes interference to the wideband time slot. Because. Also, for the same reason, the above problem can be solved by dedicating a specific time slot to a wide band time slot, but it is not preferable from the viewpoint of channel efficiency.

The method of allocating the wideband time slot to the plurality of wireless terminals 100 is superior in channel efficiency to the method of allocating the wideband time slot to only one wireless terminal 100. . This is because, as described above, in a service using a wideband downlink channel, the use of wideband time slots becomes bursty, so while a user is processing information (the wideband time slot is used). This is because the channel is effectively used by allowing other users to use the channel.

FIG. 5 is a flowchart showing the procedure for performing burst communication. That is, burst communication is communication in which communication is interrupted during communication as shown in FIG. 5 and then communication is restarted.

Next, a specific method for temporarily suspending communication and a method for resuming communication that has been temporarily interrupted will be described in detail.

[Temporary Interruption Method of Communication] First, a temporary interruption method will be described. Considering the situation in which a temporary interruption occurs, first, the wireless terminal 10
0 has received all the requested information, and the wireless terminal 100
If the user does not want to release the power stroke channel (No. 1), or if the server 104 or the broadband wireless base station 101 has been unable to provide communication service for some reason (No. 2), or the wireless terminal 100. For some reason, the communication service cannot be received for a while (part 3).

In the case of (1) above, the server 104 in this specific example transmits the requested information,
A signal indicating the end is added to the end of the information. Alternatively, at the end of transmission of the requested information, a signal indicating the end of transmission is sent using the wideband time slot. Then, on the other hand, the wireless terminal 100
Uses a broadband time slot to transmit a signal indicating a communication interruption request (not an end request) or a signal denying the end of transmission, rather than a signal that acknowledges the end of transmission. Then, in the narrow band wireless base station 102 that receives this signal, communication with the wireless terminal 100 is temporarily interrupted.

In the case of (part 2), in this specific example,
The server 104 or the broadband wireless base station 101 is made to transmit a signal indicating a communication interruption request using a broadband downlink wireless channel or a broadband time slot. Then, on the other hand, the wireless terminal 100
To transmit a signal indicating that the interruption request has been accepted, and temporarily interrupt the communication.

In the case of (No. 3), in the present specific example, the signal indicating a communication interruption request is sent to the wireless terminal 100 via the narrowband wireless base station 102 (using the wideband time slot) to the server 104. Alternatively, the broadband wireless base station 101 is made to transmit. And the server 1 which received this
04 or wideband wireless base station 101, a narrowband downlink wireless channel (wideband time slot), or
A broadband downlink wireless channel is used to cause the wireless terminal 100 to transmit a signal indicating that the interrupt request has been accepted, and communication with the wireless terminal 100 is temporarily interrupted. With the above procedure, the server 104
Alternatively, the broadband wireless base station 101 can keep the wireless terminal 100 in a state in which a wireless channel is allocated, that is, in a temporarily suspended state.

[Procedure for Resuming from Temporary Interrupted State] Next, the procedure for resuming communication from the temporarily suspended state will be described. When resuming from a temporary suspended state,
There are two types: That is, one is “when restarting from [i] user” and the other is “when restarting from [ii] server 104 or broadband wireless base station 101”.

First, the former case of "[i] resuming from user" will be described. As "when restarting from the user", there are the following two restart procedures (i) and (ii). Case (i): First, the wireless terminal 100 transmits a signal requesting restart by random access using the time slot 201e. If another wireless terminal 100 is using the wideband time slot, it waits for the turn. Then, when the turn comes, the server 104 notifies the time slot for wide band or the time slot 201.
The wireless line terminal 100 is notified using a. When the notification is made using the wideband time slot, the wireless terminal 100 must keep not only the wideband time slot but also the time slot 201a for waiting for an incoming call such as a telephone service.

On the other hand, in the case of making notification using the time slot 201a, it can be said that this is a preferable method from the standpoint of reducing the power consumption of the wireless terminal 100, because only the time slot 201a needs to be in the receiving state.

Case (ii): As another resuming procedure from the user, when the wireless terminal 100 observes the use condition of the wideband time slot and determines that it is not in use, the signal requesting resumption is transmitted to the wideband. There is a procedure to send to a timeslot.

This procedure is effective when the wireless terminal 100 can accurately determine the usage status of the wideband time slot.

Further, "[ii] When communication is restarted from the server 104 or the broadband wireless base station 101", the server 104 or the broadband wireless base station 101 is restarted using the broadband time slot or the time slot 201a. Send a signal requesting. Then, thereafter, the server 104 or the broadband wireless base station 101 restarts the transmission.

As a result, the communication using the interrupted broadband time slot is restarted. Also in this case, the signal requesting the restart is the time slot 20.
It is preferable to transmit using 1a from the viewpoint of reducing the power consumption of the wireless terminal 100.

[Broadband Time Slot Release Procedure] Next, the wideband time slot release procedure will be described as the last of the first method.

When the wireless terminal 100 wants to end the communication using the wideband downlink wireless channel, it transmits a signal indicating the end of the communication using the wideband time slot. This signal is transmitted to the server 104 via the narrow band wireless base station 102.

Upon receipt of this, the server 104 issues an instruction to the broadband wireless base station 101 to check whether there is a user waiting for the turn of service provision using the broadband downlink wireless channel. Broadband wireless base station 101 receiving this support
Examines whether there is a user waiting for a service to be provided using a broadband downlink wireless channel.

As a result, when there is a user waiting for the service provision, the broadband wireless base station 101 gives the information of the waiting user to the server 104, and the server 104 sequentially provides the broadband service to the user. The service is provided by granting the time slot for use and the permission to use the broadband downlink channel.

If there is no user waiting for service, the server 104 gives an instruction to release the wideband downlink radio channel to the wideband radio base station 101 to release the wideband downlink radio channel, and then the narrowband radio channel is released. The base station 102 is instructed to release the upper and lower narrowband wireless channels (wideband time slots) to release the narrowband upper and lower wireless channels.

As described above, when interrupting and resuming the communication via the wide band downlink radio channel and releasing the wide band downlink radio channel, the control uses the narrow band upper and lower radio channels. A wireless terminal 100 that uses a wideband downlink wireless channel needs to be allocated with upper and lower narrowband wireless channels.

Therefore, when the wireless terminal 100 is provided with a service using the wideband downlink wireless channel, the received electric field strength of the received signal from the narrowband wireless base station 102 deteriorates, and the narrowband wireless communication is performed. If the received electric field strength of the signal from the wireless terminal 100 received by the base station 102 is deteriorated, the service using the wideband downlink wireless channel may not be normally received.

In such a case, the service using the wideband downlink radio channel is likely to be wasted, and the need for retransmission causes unnecessary power consumption and waste of communication resources. Therefore, an example of solving this will be described below.

[Measures against deterioration of electric field strength of narrow band wireless channel when wide band downlink wireless channel is used] Wireless terminal 1
00 receives a service using a wideband downlink radio channel, the reception electric field strength of the reception signal from the narrowband radio base station 102 is deteriorated due to, for example, the movement of the radio terminal 100, or the like. In addition, the narrow band wireless base station 1
The received electric field strength of the signal from the wireless terminal 100 received by 02 may deteriorate. The control in this case will be described.

Here, it is assumed that the received electric field strength of the signal from the broadband wireless base station 101 received by the wireless terminal 100 is a value sufficient to receive service provision. As described above, the narrow band upper and lower radio channels are used as control channels for efficiently performing the transmission using the wide band downlink radio channel.

Therefore, when transmission is performed using the wideband downlink radio channel, the narrowband radio base station 102
Switching, that is, a handover occurs, communication by the upper and lower wireless channels of the narrow band is interrupted, and as a result, the transmission of the wide band downlink wireless channel is interrupted, which is not preferable.

As a method for preventing such a situation, here, the wireless terminal 100 and the narrow band wireless base station 102 are used.
Is provided with means for changing the threshold level VO (threshold level changing means). The threshold level changing means has a function of changing the threshold level VO for determining whether or not to perform the handover procedure during the communication using the wideband downlink channel.

Then, during communication using a wideband downlink channel, the threshold level changing means changes the threshold level VO for determining whether or not to perform the handover procedure. Specifically, the threshold level VO is set to V1 (V1 <VO)
Control to lower.

That is, when the wireless terminal 100 and the narrowband wireless base station 102 are communicating using a wideband downlink channel, the threshold level changing means lowers the threshold level VO to V1 (V1 <VO). In this way, the electric field strength level for performing the handover procedure is set lower than usual.

As a result, it is presumed that the time at which the execution of the handover procedure is started will be later than usual, and during that time, communication using the wideband downlink channel will often be completed, so that the handover procedure is performed. Before entering, we hope that communication services using broadband downlink channels will end normally.

Conventionally, the handover is carried out when the received electric field strength of the received signal is deteriorated to VO, but the handover is not carried out until the received electric field strength is deteriorated to V1. As a result, although the communication quality of the narrowband wireless channel is deteriorated, it is possible to prevent the interruption of the communication using the wideband downlink channel.

As another method, when the wireless terminal 100 and the narrowband wireless base station 102 are communicating using a wideband downlink wireless channel, the narrowband wireless base station 102 is not handed over. There is a method of providing a handover regulation control means for controlling the above.

Specifically, this handover regulation control means carries out the following regulation control. That is, when information transmission is performed using a wideband downlink radio channel, control is performed so that handover is not performed even if the received electric field strength falls below the threshold level VO. Then, after the information transmission using the wideband downlink wireless line channel is interrupted or ended, the handover is performed. Alternatively, when information is transmitted using a wideband downlink radio channel, even the received electric field strength is not measured.

Then, when the information transmission is interrupted or ended, that is, when there is no information transmission using the wideband downlink radio channel, the received electric field strength is measured,
If the result is below the threshold level VO, handover is performed.

By carrying out such regulation control, although the communication quality of the narrow band wireless channel may be deteriorated, it is possible to prevent the interruption of the communication using the wide band downlink wireless channel.

A method combining the above two methods is also effective as a method for preventing interruption of communication using a wideband downlink radio channel.

For example, a third level V2 (V1 <V2 <VO) is set as a criterion for handover processing, and when the threshold level falls below V1, handover is performed immediately, but if V2 Even at the time of, there is a control method of interrupting communication using a wideband downlink radio channel, or performing a handover if completed.

Next, in the case where the reception electric field strength of the signal from the narrow band wireless base station 102 to the wireless terminal 100 becomes small and it cannot be used as a channel for controlling the information transmission using the wide band downlink wireless channel, Think In such a state, even if the broadband wireless base station 101
Even if the received electric field strength of the signal from the wireless terminal 100 to the wireless terminal 100 is large enough to receive the signal, the information cannot be transmitted using the wideband downlink wireless channel.

The same applies when the received electric field strength of the signal from the broadband wireless base station 101 to the wireless terminal 100 becomes small. Thus, even when the wireless terminal 100 cannot receive the signal from the broadband wireless base station 101, transmitting information from the server 103 to the broadband wireless base station 101 is completely meaningless and useless. Because
Since the broadband wireless base station 101 cannot send the information transmitted from the server 103 to the wireless terminal 100, the transmitted information is discarded, and thus the server 103 is useless, This is because the same information will be repeatedly transmitted. Even if the broadband wireless base station 101 is provided with a buffer for storing information, since the storage capacity of the buffer is limited, information having no destination is sent from the server 103 to the broadband wireless base station 101. It is completely useless to keep sending. An example of dealing with such a situation will be described below. These correspond to the eighth invention to the twelfth invention.

[When the narrow band wireless channel transmission / reception of the wireless terminal is impossible] If the wireless terminal cannot transmit / receive the narrow band wireless channel, reception control of the wide band downlink wireless channel may be hindered. Describe the technology to deal with the situation.

For example, the radio terminal 100 is provided with a reception electric field strength measuring means for measuring the reception electric field strength of the signal transmitted from the narrow band radio base station 102. In addition, the wireless terminal 10
0, the control means is provided with a control function for controlling the transmission of the transmission stop command signal using the narrow band upstream radio channel when the measurement result by the reception electric field strength measuring means is smaller than the predetermined threshold level. And
Here, the transmission stop command signal is a command signal for stopping the information transmission from the server 103 to the broadband wireless base station 101.

In such a configuration, the wireless terminal 100
Is provided with a reception electric field strength measuring means to measure the reception electric field strength of a signal (narrow band downlink radio channel) transmitted from the narrow band radio base station 102. When the result of measuring the electric field is smaller than the predetermined threshold level, the control means of the radio terminal 100 controls the transmission of the transmission stop command signal using the narrow band uplink radio channel. Then, the narrow band wireless base station 102 receives this signal, and the narrow band wireless base station 1
02 transmits the received transmission stop command signal to the server 103. The server 103 stops the information transmission to the broadband wireless base station 101 by the transmission stop command signal.

In this way, when the electric field strength of the narrow band downlink radio channel becomes smaller than the threshold level, the wireless terminal 100 sends a command to stop transmission to the server 103 using the narrow band uplink radio channel. In order to stop the information transmission from the server 103 to the broadband wireless base station 101, the information transmission of the information provided by the server 103 from the broadband wireless base station 101 to the wireless terminal 100 is stopped, and the narrowband wireless channel cannot be used. It is possible to suppress useless transmission using the wideband channel due to the above-mentioned situation.

Another example of the handling when the narrow band wireless channel transmission / reception of the wireless terminal is impossible is shown below. The radio terminal 100 is provided with a reception electric field strength measuring means for measuring the reception electric field strength of a signal transmitted from the narrow band radio base station 102, and the reception electric field strength measurement result is a predetermined handover threshold level. If it is smaller, a control means for performing the handover process of the narrowband wireless base station 102 is provided. In this control means, there are two types of threshold levels that serve as a criterion for performing handover processing. Two types of threshold levels (standard threshold level) for communication using only narrowband wireless channels and threshold levels (special threshold level) for communication also using wideband wireless channels is there.

The former (standard threshold level) is a general threshold level predetermined by the system, and the latter (special threshold level) is a large amount for high-speed transmission using a wideband radio channel with large power consumption. Since it is accompanied by the transmission of information, even if the state of the radio wave deteriorates and the reception using the wideband wireless channel becomes unstable, the received information is completely wasted, so in order to avoid this, The comparison criterion for entering the handover process is set higher than the standard handover threshold level. Of course, it may be equal to the standard handover threshold level.

In such a configuration, the wireless terminal 100
Means to measure the received electric field strength of the signal transmitted from the narrow band wireless base station 102 by the received electric field strength measuring means,
The control means performs the handover process of the narrowband wireless base station 102 when the measurement result is smaller than the predetermined handover threshold level.

In this example, the threshold level is equal to or larger than the handover threshold level in the case of high speed transmission using a wide band radio channel. Therefore, when the radio wave condition of the narrow band wireless channel deteriorates and the narrow band wireless channel is used to control the information reception on the wide band wireless channel, the information reception control using the narrow band wireless channel is performed. In a situation where there is a fear of becoming unstable, the handover process is started, so that the risk of wasteful information transmission using the wideband wireless channel can be avoided early.

[When Wide-Band Downlink Radio Channel Cannot Be Received by Radio Terminal] An example for dealing with the case where the radio terminal 100 cannot receive the wide-band downlink radio channel will be described. For that purpose, the wireless terminal 100 is provided with a broadband wireless channel reception field strength measuring means for measuring the reception field strength of the signal transmitted from the broadband wireless base station 101, and measures the reception field strength. When the result is smaller than the predetermined threshold level, the wireless terminal 100 transmits a signal for stopping the information transmission from the server 103 to the broadband wireless base station 101.

In this apparatus, the wireless terminal 100 is provided with a wideband wireless channel reception electric field strength measuring means,
The received electric field strength of the signal transmitted from the broadband wireless base station 101 is measured. When the measurement result is smaller than the predetermined threshold level, the wireless terminal 100 sends a signal for stopping the transmission of information from the server 103 to the broadband wireless base station 101 via the narrow band upstream wireless channel. (Called a transmission stop signal) is transmitted.
This signal is transmitted from the narrow band wireless base station 102 to the server 103.
And the broadband wireless base station 101. Then, the server 103 having received this stops transmission of information to the broadband wireless base station 101.

In this way, it becomes possible to control the stoppage of the unnecessary transmission of information from the server 103 to the broadband wireless base station 101.

Next, the level at which the received electric field strength of the signal from the narrow band wireless base station 102 or the received electric field strength of the signal from the wide band wireless base station 101 reaches a level at which the transmission stop signal is transmitted will be described.

That is, the threshold level used as a reference when determining whether or not to transmit the transmission stop signal will be described. Here, only the threshold level (transmission stop threshold level and calling part) for sending the transmission stop signal when the received electric field strength of the signal from the narrowband wireless base station 102 becomes small will be described.

The reason is basically the same when the transmission stop signal is sent when the received electric field strength of the signal from the broadband wireless base station 102 is small. Wireless terminal 100
Measures the received electric field strength of the signal from the narrow band radio base station 102, and if the measurement result is smaller than the above-mentioned handover threshold level, searches for another narrow band radio base station having a good electric field strength. Handover is performed to switch to communication there.

During such a handover, communication via the narrow band upper and lower radio channels is interrupted, thus
Unable to control transmission of wideband downlink radio channel. For this reason, the transmission stop threshold level is
It is better that it is equal to or higher than the handover threshold level.

The same applies when the handover threshold level is changed according to the sixth aspect of the invention. Further, since the broadband wireless base station 101 is equipped with a buffer having a large capacity, even if the handover process is performed in a relatively short time, the handover fails and the received electric field strength becomes further smaller and narrow. Since communication via wireless channels above and below the band may be disabled, the server 103 may cause the broadband wireless base station 101 to
It is necessary to stop the transmission of information to.

This is because if the communication via the upper and lower radio channels of the narrow band is disabled, the wide band radio base station 101 cannot transmit information, and the information stored in the buffer becomes completely unnecessary. is there. In addition, this unnecessary information must be erased.

For this reason, the transmission stop threshold level needs to be at least equal to or higher than the handover threshold level. Further, when the wireless terminal 100 receives information from the wideband wireless base station 101, it becomes impossible to communicate by at least one of the upper and lower narrowband wireless channels and the wideband downstream wireless channel. The broadband wireless base station 101 deletes the information addressed to the wireless terminal 100 stored in the buffer.

As a result, it becomes possible to prevent unnecessary information from being accumulated in the buffer.

As described above, as the method of allocating the communication time slot, the time slot used when performing communication using the wideband downlink radio channel and the narrowband upper and lower radio channels without using the wideband downlink radio channel. Various specific examples have been described in the case where the first allocation method of allocating convenient time slots to different time slots when performing communication (for example, voice communication) using the.

Next, as a method of allocating communication time slots, a time slot for performing communication using a wideband downlink radio channel and a time slot for performing communication using only narrow band upper and lower radio channels. Various specific examples in the case of adopting the method of allocating to the same time slot, that is, the second allocation method of sharing one time slot for use will be described.

The second allocation method will be described in detail.
This method is a method of allocating a time slot for performing communication using a wideband downlink radio channel and a time slot for performing communication using only narrow band upper and lower radio channels to the same time slot.
In this method, the same time slot may be assigned only to the same user, and the same time slot may be assigned to different users. In the following, the former case will be described as an example.

When a user who has used only the upper and lower radio channels of the narrow band wants to receive a service using the wideband downlink radio channel during the voice call, information is obtained using the time slot used in the voice call. Send a request signal. It is also possible to transmit the information request signal using the time slot 201e, but in that case, the problem of packet collision occurs.

Now, the server 104 is the narrow band radio base station 1
When the information request signal is received via 02, the server 1
Reference numeral 04 transmits a control signal for efficiently controlling the information transmission through the wideband downlink radio channel when the voice call is silent, that is, when the time slot is temporarily not used. The above specific example is based on the premise that voice communication has higher immediacy (real-time property) as the QoS (Quality of Service) required by the service.

Therefore, on the contrary, if the communication using the wideband downlink radio channel is more immediate than the communication using only the narrowband upper and lower radio channels, the wideband downlink radio channel is controlled. In the state where the control information of 1 is temporarily absent, the information is transmitted using the narrow band upper and lower radio channels.

The same applies when a user who has been communicating using a wideband downlink wireless channel wants to receive a service using only upper and lower narrowband wireless channels during communication, such as a voice communication service such as a telephone. In addition, the calling signal, the incoming signal, the information signal and the like are transmitted by utilizing the temporary unused time of the wideband time slot used for transmitting the control signal. However, in this case as well, the Q required by the service
Information having high immediacy is preferentially transmitted according to the oS.

As described above, in the wireless communication system for performing SDL transmission, which is the object of the present invention, in order for wireless terminal 100 to receive information via a wideband downlink wireless channel, the wireless terminal 100 must receive information. It is necessary to allocate (reserve) both upper and lower narrow band wireless channels (time slots) and wideband downlink wireless channels, and to allocate the wideband downlink wireless channels to the wireless terminal 100, The upper and lower radio channels (time slots) of the narrow band had to be assigned in advance.

However, the present invention makes it possible to carry out the procedure according to the flowchart shown in FIG. That is, the upper and lower narrow band radio channels are allocated, the wide band downlink radio channel is allocated, and then the communication service using the wide band downlink radio channel is provided. It is possible to release the downlink radio channels of the above and release the radio channels above and below the narrow band.

In other words, this solves the above-mentioned problem and enables the wireless terminal 100 to receive information via a wideband downlink wireless channel. Further, according to the present invention, a procedure for using radio channels above and below a narrow band as radio channels for controlling information transmission using a wide band downlink radio channel to be efficiently transmitted is established, and a narrow channel is established. The radio channels above and below the band can be used for the control for efficient information transmission of the broadband downlink radio channel.

(Second Specific Example) In the second specific example, in addition to the above-described wireless communication system using the SDL system as an example,
Information transmission from the broadband wireless base station 101 to the wireless terminal 100 is also applied to a wireless communication system using a time division multiple access system.

With respect to the frame configuration example of the wide band downlink radio channel, the case where the time length of the second frame is 1 time and the time length thereof is 2 times will be described. First, the time length of the second frame is 1 of the time length of the first frame.
In the case of double, if the division number of the second frame is set to 1, the frame 300 is composed of one time slot 301 (see FIG. 7).

Under such a configuration, the wireless terminal 100 desiring to perform communication using a wideband downlink wireless channel has, for example, time slots 201b and 201f, a wideband downlink as upper and lower narrow band wireless channels. Time slots 301 are assigned as radio channels.

The time slot 301 is used for transmitting a large amount of data from the server 103 at high speed.
In addition, the time slots 201b and 201f are used as channels for transmitting control signals for efficiently controlling information transmission by the broadband downlink radio channel. Specifically, the time slot 201b is the wireless terminal 1
00, power control signals for power saving are transmitted, and the time slot 201f is ARQ or Ac.
The k signal or the like is transmitted.

In order to realize such transmission, it is necessary to efficiently associate a wide band downlink radio channel with upper and lower narrow band radio channels.

That is, "in which time slot 201b a power control signal for a signal transmitted using a certain time slot 301 can be transmitted?" And "in which time slot 2? Lf the ARQ and Ack signals are transmitted." Was it done? ”Had to be dealt with efficiently.

To address such a problem, the present invention sets the time length of the second frame to be one time the time length of the first frame, that is, the same time length. As a result, the repetition cycle of the time slot 201b and the time slot 301 and the repetition cycle of the time slot 201f and the time slot 301 become equal.

Therefore, the time slots 201b, 201
It is possible to keep the relative positional relationship between f and the time slot 301 constant.

In this way, when the relative positional relationship can be kept constant, the time slots 201b and 201f
And the time slot 301 can be uniquely associated with each other, and the information amount of the control signal for the association can be reduced or eliminated. That is, it becomes possible to efficiently control the information transmission of the time slot 301.

The time slot 201b associated with a particular time slot 301 is at least a time slot prior to the time slot 301, and the time slot 201b associated with the time slot 301. The slot 201f is a time slot at a time later than that time slot 301.

Similarly, when the number of divisions of the second frame is two, the frame 300 is the time slot 302a,
302b (FIG. 8). These two time slots 302a and 302b are used by, for example, two users (2
The users assigned to the two different wireless terminals 100 and the time slots 302a are assigned to the time slots 201b and 201 as narrow band upper and lower radio channels.
The user to which f is assigned and the time slot 302b is assigned is assigned the time slots 201c and 201g as the upper and lower radio channels of the narrow band.

Also in this case, the repetition cycle of the time slot 201b and the time slot 302a and the repetition cycle of the time slot 201f and the time slot 3T2a become equal, and a signal for controlling the information transmission of the time slot 302a is transmitted. , Timeslot 20
It is possible to efficiently transmit using 1b and 20lf.

Similarly, since the repetition cycle of the time slot 201c and the time slot 302b and the repetition cycle of the time slot 201f and the time slot 302b are equal, a signal for controlling the information transmission of the time slot 302b is Time slot 201
c, 201g can be used for efficient transmission.
It is also possible to assign the two time slots 302a and 302b to one user (one wireless terminal). However, in this case, the time slots 302a, 302
As a narrow band upper and lower radio channels for controlling transmission of b, two sets of time slots, for example, “20 lb,
201f ”and“ 201c, 201g ”time slots are assigned respectively, or a set of time slots, for example, time slots“ 201b, 201f ”
And the time slot “201b, 2
01f ”has two time slots“ 302a ”and“ 30 ”
There is a method of providing a means for adding transmission control information of 2b ″.

The former method is superior in terms of ease of realization, but the latter method is preferable in terms of effective use of frequencies. Also, when the frame 300 is divided into three,
The same effect as that described so far can be obtained. In addition, when the frame of the wideband downlink radio channel is divided, the radio terminal uses all time slots (for example, 302
a, 302b), identify the information addressed to the own station from among them, and recognize in advance in which time slot the information addressed to the own station is transmitted, and receive only the information addressed to the own station. You have to choose which way to do it.

Since the latter is by far advantageous in terms of low power consumption of the wireless terminal, it is possible for the wireless terminal to recognize in advance in which time slot the information addressed to itself is transmitted. Building a wireless communication system was essential.

Therefore, according to the sixteenth invention, which time slot is assigned to which radio terminal is notified using a narrow band downlink radio channel. This enables the wireless terminal to receive the information transmitted by the wideband downlink wireless channel while suppressing the power consumption.

[When the Second Frame is Double the Time Length of the First Frame] Next, the case where the time length of the second frame is twice the time length of the first frame will be described. .

In this case, the number of divisions of the second frame may be "2 divisions", "4 divisions", "6 divisions", etc. Here, the case where the number of divisions is "2" will be described as an example. (See Figure 9).

In this case, the frame 300 is divided into two, a time slot 401a and a time slot 401b.
Therefore, the time length of each of the time slots 401a and 401b is equal to the time length of the frame 200. The two time slots 401a and 401b are assigned to, for example, two users (two different wireless terminals 100) who want to perform communication using a wideband downlink radio channel, and the user assigned the time slot 401a is assigned a narrow band. Time slots 201b as upper and lower radio channels,
The user to which the time slot 201b is assigned and the time slot 401b is assigned the time slots 201b and 201f as upper and lower radio channels of a narrow band.

That is, the frame repetition period in the upper and lower radio channels of the narrow band is doubled. However, it is only the time slots (here, the time slots 201b and 201f) for controlling the information transmission of the wideband downlink radio channel that the frame repetition period is doubled. For other timeslots assigned to communications using only
The repetition cycle is not changed.

By doing so, the repetition cycle of the time slot 201b and the time slot 401a and the repetition cycle of the time slot 201f and the time slot 401a become equal, and the information transmission of the time slot 401a is controlled. Signal can be efficiently transmitted using the time slots 201b and 201f.

Similarly, since the repetition cycle of the time slot 201b and the time slot 401b and the repetition cycle of the time slot 201f and the time slot 401b are equal, a signal for controlling the information transmission of the time slot 401b is Time slot 201
b, 201f can be used for efficient transmission.

In the above example, the time slot 401
Although the case where a and 401b are assigned to different users has been described, it is also possible to assign them to the same user.

In this case, the time slots 201b, 20
The repetition period of 1f is not changed. In addition, the narrow band wireless base station 102
When the means for transmitting the signal for setting the start time of the frame is provided, the start time of the second frame is controlled so that the control of the information transmission by the wide band downlink radio channel becomes more efficient. Can be set.

For example, the start time of the second frame is shown in FIG.
If it is 0 (a), in order to control the frame 500 of the wideband downlink radio channel, the time slot in the frame 501a is set as the narrowband downlink radio channel,
Each time slot in the frame 501c is used as a narrow band upstream radio channel.

Therefore, the control time Tc for controlling one frame of the wide band downlink radio channel needs to be about three times the frame time length of the upper and lower radio channels of the narrow band.

However, when the start time of the second frame is set as shown in FIG. 10B, in order to control the frame 500, the time slot in the frame 502a and the narrow band of the narrow band are set as the narrow band downlink radio channel. The time slots in the frame 502b are used as the upstream radio channels.

Therefore, the control time Tc required to control one frame of the wide band downlink radio channel is about twice the frame time length of the upper and lower radio channels of the narrow band. That is, the control time can be shortened.

[0214] Further, the start time of a frame in a certain narrow band wireless base station 102 and the narrow band wireless base station 102.
If the relative positional relationship with the start time of the frames of all the broadband wireless base stations located inside is kept the same, the base station switching (handover) of the broadband wireless base stations may occur due to the movement of the wireless terminal 100 or the like. If it occurs, the handover process becomes easy.

Since the frame start time of the broadband wireless base station 101 does not change even after the base station switching, the broadband wireless base station 1 is switched every time the base station is switched.
This is because it is not necessary to observe the relative positional relationship between the frame start time of 01 and the frame start time of the narrowband wireless base station 102.

Although the signal for setting the frame start time can be transmitted using the narrow band downlink radio channel, the narrow band radio base station 102 and the wide band radio base station 101 are provided according to the seventeenth invention. If a line that is fixedly assigned to the narrow band wireless base station 102 is used,
Since the propagation time between the wireless base station 101 and the broadband wireless base station 101 can be accurately known in advance, it is possible to easily set the frame start time with high accuracy.

Next, a specific example for solving the second problem will be described as a third specific example. (Third Concrete Example) The second problem is that the narrowband radio transmitter / receiver and the wideband radio receiver are installed in the same housing such as a terminal, and the harmonics generated in the narrowband transmitter are It is to prevent an increase in weight and volume by providing a shield or the like between the narrow band wireless transceiver and the wide band wireless receiver while not affecting the reception. Basically, while the base station is transmitting a wideband signal to the terminal, the terminal does not transmit the narrowband signal.

For this reason, the narrow band radio base station 102
As shown in FIG. 11B, the narrow band wireless transmitter 102
a, narrow band wireless receiver 102b, duplexer 102c,
Antenna 102d, digital processing means 102e, network connection means 102f, inter-base station communication means 102
g and control means 102h, the broadband wireless base station 101 has a broadband wireless transmitter 101a, an antenna 101b, and a digital processing means 1 as shown in FIG. 11 (a).
01c, network connection means 101d, inter-base station communication means 101e, and control means 101f.

The narrow band wireless transmitter 102a and the narrow band wireless receiver 102b have a function of transmitting and receiving a narrow band signal using a wireless channel set with a narrow band wireless transceiver provided in a terminal or the like. . The wideband wireless transmitter 101a has a function of transmitting a wideband signal using a wireless channel set with a wideband wireless receiver provided in a terminal or the like.

Digital processing means 101c, 102e
Is a function that performs error detection coding and error correction coding on the data to be transmitted and then stores it in a frame of a predetermined format, and extracts the frame from the received signal and extracts the stored information. , Has a function of decoding the data to obtain data, a function of detecting occurrence of an error in data during wireless transmission, and a function of controlling retransmission.

Network connection means 101d, 102f
Is an interface between a wireless base station and a network, which performs transmission format and physical signal conversion on a wireless transmission line and a wired transmission line. Control means 101f, 1
02h performs the operation setting of each means and the processing for abnormality according to a predetermined program.

In the present invention, the control means 101f, 10
2h allocates radio channels (radio frequencies and time slots) used between the respective radio base stations and terminals and manages the use status, and performs narrow band radio communication via inter-base station communication means 10e and 102g. Such information is transmitted and received between the base station 102 and the broadband wireless base station 101. Further, information such as frame start timing in the digital processing units 101c and 102e in each baseless station is similarly transmitted and received via the inter-base station communication means 101e and 102g. A method for controlling the terminal not to transmit the narrowband signal while transmitting the wideband signal (wideband downlink radio channel) to the destination will be specifically described.

Wideband downlink radio channel frame 60
A case where 0 is configured of four time slots 601a to 601d shown in FIG. 12 and the head of the frame operates in synchronization with the frame of the narrow band wireless channel will be described.

Each radio base station allocates a slot so that transmission on the narrow band upstream radio channel does not occur while the terminal is receiving on the wide band downstream radio channel. That is, the narrow band upstream radio channels 201e-2
When 01h can be used, for the terminal that allocates the time slot 601c as a wideband downlink radio channel,
Time slot 201 as a narrow band upstream radio channel
g or 201h.

Similarly, for the terminal to which the time slot 601d is assigned, the time slot 201e or 20
By assigning 1f and 601c, the above-mentioned control becomes possible. As another control method, a method of previously limiting the time slot of the narrow band uplink radio channel that can be used by the terminal using the wide band downlink channel for controlling the wide band transmission will be described with reference to FIG. .

For example, of the narrow band upstream radio channels, the time slots 201e and 20 in the frame 200 are
1f is used exclusively for control of wideband transmission. At this time, the time slots 201e and 20 of the time slots in the frame 600 are used as wideband downlink channels.
The time slots 601a, 601b, and 601d excluding the time slot 601c overlapping with 1f in time are used.

By defining such a use range in advance and allocating from the time slot of the dedicated narrow band uplink radio channel and the wide band downlink radio channel within the use range to the terminal performing the wide band transmission. The control described above is possible.

As another control method, a method of suppressing transmission on the narrow band upstream radio channel on the terminal side will be described with reference to FIG. The wideband wireless base station and the narrowband wireless base station perform operations to synchronize the respective frames. Here, as shown in FIG. 13, a case where the beginning of the frame of the wideband wireless channel operates in synchronization with the frame of the narrowband wireless channel will be described.

For the terminals, time slots 201b, 203b ... Are provided as narrow band downlink radio channels, and 201f, 203f ... Are provided as uplink radio channels.
Time slot 601 as a wideband downlink radio channel
It is assumed that c is assigned. At this time, if there is data to be transmitted from the broadband wireless base station to the terminal, the reception instruction is transmitted from the narrowband wireless base station using the time slot 201b.

Until the terminal completes the reception of data on the wide band downlink radio channel, the terminal receives the time of the narrow band uplink radio channel which overlaps with the time slot 601c assigned as the wide band downlink radio channel in time. No transmission is performed in the slot. In the above example, the time slot 201f overlaps the time slot 601c in terms of time, and since data is received on the wideband downlink radio channel, transmission is not performed on the narrowband downlink radio channel. When the completion of data reception is detected by receiving the end flag added to the end of the data, transmission can be performed in the time slot 203f.

As described above, in this embodiment, the narrowband radio transmitter / receiver and the wideband radio receiver are provided in the same housing such as a terminal, and the harmonics generated in the narrowband transmitter receive the wideband signal. In order to prevent the increase in weight and volume by applying a shield between the narrow band wireless transceiver and the wide band wireless receiver,
While the wideband radio base station is transmitting a wideband signal to the terminal, it is basically assumed that the terminal does not transmit the narrowband signal, and the terminal receives the second time slot of the second time slot by the wideband receiving means. Allocation of the first and second time slots or the first and second time slots so that the terminal does not transmit the control signal in the first time slot by the narrow band transmission / reception means within the period of receiving data. The start time of the second frame or the transmission time of the terminal is controlled.

As a result, during the receiving period of the wideband signal, since there is no transmission of the narrowband signal, the harmonics generated by the narrowband transmitter have no influence on the reception of the wideband signal. It has become possible to prevent an increase in weight and volume due to the application of such as.

As described above, the first and second specific examples provide a control procedure for efficiently performing information transmission in a wireless communication system having upper and lower narrow band wireless channels and a wide band down wireless channel. In a wireless communication system having upper and lower narrow band wireless channels and a wide band down wireless channel, when the wireless terminal receives information via the wide band down wireless channel, the wireless terminal receives the upper and lower narrow band wireless channels. This is based on the fact that channels are allocated, which enables communication using wideband downlink radio channels, and also allows narrowband upper and lower radio channels to use wideband downlink radio channels. It has become possible to use the existing information transmission as a wireless channel to control it for efficient transmission.

Next, among wireless communication systems using a plurality of types of wireless signals, a wireless communication system capable of improving serviceability will be described as fourth to eighth specific examples.

The following specific examples are examples for providing a user-friendly wireless system that facilitates users of various age groups to receive various services using wireless terminals.

Here, the premise of the following specific example will be described. With the spread of small portable information processing and electronic devices, communication functions have been added to these portable devices (called wireless terminals), and services using various networks have come to be provided. Therefore, various kinds of information have come to be transmitted via a wireless transmission path. The various types of information referred to here are, for example, voice, data, still images, moving images, and the like. In order to enable wireless transmission of such various information using one wireless terminal,
It is necessary to provide the most suitable transmission method according to the type of information. In the case of wireless, there are at least two methods for performing them, that is, a method of multiplexing various information into one modulated signal or carrier and a method of using different carriers according to the attribute of information.

One of the factors that hinder the miniaturization of wireless terminals that should be small is the high-frequency amplifier, and in order to make this high-frequency amplifier small, low-priced, and low in power consumption, the frequency suitable for each information varies depending on the information. Alternatively, it is desirable to use a transmission method. However, if the frequency or transmission method is different, information that can be transmitted wirelessly and information that is not so are generated even in the same environment. In other words, the type and quality of services that can be provided may differ.

[0238] This is because the service area varies greatly depending on the frequency used, and because the power consumption also varies, the services that can be provided differ depending on the remaining battery level. This is also a factor. In addition, the type, quality, and time of services that can be provided when receiving communication services between wireless terminals are not limited to the type, number, quality, and battery level of wireless signals that the terminals can receive, and communication is performed. The type, number, quality, and battery level of wireless signals that can be received by the other terminal also have a large effect.

As described above, the types and qualities of services that can be provided to the wireless terminal vary depending on the occasion. And, even if it is possible to judge the type, quality, and time of the service that can be provided in consideration of the state of the partner terminal, even if it is possible to judge the type and quality of the service, there are various things. How to inform is a problem.

For example, a wireless terminal which receives three types of wireless signals of a pager, PHS, and wireless LAN will have eight states even if only notification of whether or not reception is possible. Therefore, from the viewpoint of the user who operates the wireless terminal, it can be said that the wireless terminal that can immediately recognize the type and quality of the service that can be provided is a very easy-to-use terminal.

However, the conventional wireless terminal is not provided with the function of informing the user of the type of service that can be provided, the quality, and the service time.

From this point of view, therefore, in the following specific example, the types of services that can be provided in the wireless terminal,
We will show how to provide a communication system that can inform the user of quality and time to be provided, and can significantly improve usability.

[B1] The basis in this example is a single or plural receivers for receiving single or plural kinds of wireless signals, corresponding to a communication system using single or plural kinds of wireless signals. The wireless terminal or the terminal module provided with is provided with an informing unit for informing at least one of the type, quality, and time of the service that can be provided.

[B2] Also, in this specific example, a single or plural receivers for receiving the single or plural kinds of wireless signals are provided corresponding to the communication system using the single or plural kinds of wireless signals. The provided wireless terminal or terminal module is a wireless terminal or terminal module having a type and number and quality of receivable wireless signals and a single or multiple receiver for receiving the wireless signal of the single or multiple types. Determining means for determining at least one or more of the types and qualities of service that can be provided and the time, which differ depending on the combination of at least one or more of the remaining battery amounts, and notifying means for notifying the determination result. Is equipped with.

[B2-a] Furthermore, in this specific example, one or a plurality of transmitters for transmitting one or a plurality of downlink radio signals and one or a plurality of receivers for receiving one or a plurality of uplink radio signals. An apparatus and a wireless terminal having a single or a plurality of receivers for receiving the single or a plurality of downlink radio signals, and a wireless terminal having a single or a plurality of transmitters for transmitting the single or plurality of uplink radio signals; A terminal connected to one or more transmitting devices and the one or more receiving devices, and storing at least one combination of the type and number of wireless signals receivable by the wireless terminal, quality, and battery level In a wireless system including a management unit, when receiving a service between the wireless terminals, the wireless terminal manages the terminals. A combination of at least one of the type, number, quality, and battery level of the receivable wireless signal of the partner wireless terminal, and the type, number, quality, and battery level of the receivable wireless signal of the wireless terminal itself A determination unit that determines at least one or more of the types, qualities, and times of different services that can be provided based on a combination of at least one of the above, and a unit that notifies the determination result.

[B3] Also, a single or a plurality of transmitters for transmitting a single or a plurality of downlink radio signals, a receiver for receiving at least one uplink radio signal, and a receiver for the single or plurality of downlink radio signals. A wireless terminal provided with a single or a plurality of receivers for transmitting the at least one uplink radio signal, the single or a plurality of transmitting devices, and the receiving device, and the wireless terminal In a wireless system configured with a service management manager managing a provided service, the service management manager includes the receivable singular number or plural numbers transmitted from the wireless terminal via the at least one uplink radio signal. Of the downlink radio signal types and numbers, quality and battery level, The combination of any one or more of information, among the types and quality and time of services provided to the wireless terminal, and a determination means for determining any one or more.

[B3-a] Also, a single or a plurality of transmitting apparatuses that transmit a single or a plurality of downlink radio signals, and a single or a plurality of receiving apparatuses that receive a single or a plurality of uplink radio signals, and the single or plural. Wireless terminal having a single or a plurality of receivers for receiving the downlink radio signals and a single or a plurality of transmitters for transmitting the single or plurality of uplink radio signals, and the single or a plurality of transmitters And a service management manager connected to the one or more receiving devices and managing a service provided by the wireless terminal, the service management manager being capable of receiving the calling wireless terminal. A combination of at least one of the type, number, quality, and battery level of wireless signals and the incoming wireless terminal Judging at least one or more of the types, quality and time of different services that can be provided by the combination of at least one of the type and number of receivable wireless signals, quality and remaining battery capacity. It is provided with a determination means for performing.

[B4] Further, a single or a plurality of transmitters for transmitting a single or a plurality of downlink radio signals, a receiver for receiving at least one uplink radio signal, and a receiver for the single or plurality of downlink radio signals. A wireless terminal provided with a single or a plurality of receivers for transmitting the at least one uplink radio signal, the single or a plurality of transmitting devices, and the receiving device, and the wireless terminal A wireless system comprising a service management manager that manages a service to be provided, wherein the wireless terminal is capable of receiving at least one of the type and number, quality, and battery level of the downlink wireless signal or signals that can be received. Any one or more of the service management moneys via the at least one uplink radio signal. And the service management manager uses at least one of the information transmitted from the wireless terminal, and at least one of the type, quality, and time of the service provided by the wireless terminal. It is characterized by determining one or more and notifying the wireless terminal of the determination result via any of the plurality of downlink wireless signals.

(Fourth Concrete Example) FIGS. 15 and 16 are schematic block diagrams showing a configuration example of a wireless terminal and a terminal module relating to the above [B1]. In the figure, 1100
Is a wireless terminal relating to the present invention, and 1200 is a terminal module. The wireless terminal 1100 can perform wireless transmission / reception, display, and the like by itself, and is a device as shown in FIG. 17A, for example, and is provided with a wireless interface for wireless transmission / reception and a user interface for input / output. ing.

On the other hand, the terminal module 1200 is a module for function expansion, has only a function of wireless transmission / reception, and has no user interface.
In order to receive the service, another terminal 121 having a user interface is provided as shown in FIG.
Must be connected to 0. That is, when the terminal 1210 has a user interface but does not have a wireless transmission / reception function, by mounting the terminal module 1200 on the terminal 1210, the wireless transmission / reception function is given to the terminal 1210. However, the terminal module 120
In order to mount 0 on the terminal 1210, the terminal 1210 is provided with a mounting portion 1210CN for that purpose, and the terminal module 1200 is mounted there.

Reference numerals 1101a and 1101b are receivers for receiving radio signals. In the configurations shown in FIGS. 15 and 16, examples of a radio terminal and a terminal module having two receivers are shown. .

Reference numeral 1103 denotes a terminal unit for performing information processing, which has a user interface. Also, 11
Reference numeral 04 is a notifying means for notifying at least one of the "type", "quality", and "time" of the service that can be provided. In the case of the wireless terminal 1100, the notification unit 1104 is incorporated in the terminal unit 1103, and the user interface of the terminal unit 1103 is used to inform the user of the types of services that can be provided, “quality”, “time”, and the like. I may also inform you.

For example, the terminal unit 1103 and the notification means 110
This corresponds to the case where 4 uses a common monitor screen. However, in this specific example, the case where the terminal unit 1103 and the notification unit 1104 are separated will be described as an example. Also,
Regarding the shape of the terminal module 1200, it is desirable that the terminal module 1200 is small and lightweight. And the terminal module 1200
Is preferably a card type terminal module conforming to the PCMCIA standard in the sense that the capacity of the terminal 1210 is prevented from increasing when directly connected to the terminal 1210 having a user interface. In addition, when infrared rays are used for the connection interface between the terminal module 1200 and the terminal 1210, not only the cost is low, but also the physical connection between the terminal module 1200 and the terminal 1210 is not required, which enables flexible system construction. It is advantageous.

The invention described here is of the type of radio signal,
The main purpose is to be able to notify information such as the number, quality, remaining battery level, type of service that can be provided, and communication time. Then, regarding a specific notification method for that, the case of the wireless terminal 1100,
There is no difference in the case of the terminal module 1200. Therefore, here, the wireless terminal 1100 will be described as an example.
Here, it is assumed that the control unit 1102 has a function of recognizing the “type”, “quality”, “time”, etc. of services that can be provided by using some means.

As a method of notifying the user of the recognized information, there is a method of appealing to the user's sight, hearing, touch, and the like. First, the visual appeal method will be described. In this case, the notification means 1104 has a display function for appealing to the visual sense of the user. For example, the lamp (L
It may be a light emitting element such as an ED) or a monitor screen. When the notification means 1104 is configured to display by using a lamp, the lamp can change its emission color, or a combination of a plurality of lamps of different colors can be used, and the color, brightness, blinking cycle, etc. By changing it, the type, quality, time, etc. of services that can be provided will be indicated.

Here, the wireless terminal 1100 is a pager, P
Assuming that there are two receivers of HS (simple mobile phone; personal handyphone system), the services that can be provided are a service for calling a user by a pager (paging service) and a voice call service by PHS.
In the following, a specific example using a lamp will be described. In this example, the wireless terminal 110 as shown in FIG.
At 0, a lamp L for informing the state is provided. in this case,
Even if the pager and PHS respectively indicate whether they are ready for reception or not, it is necessary to change the shape and display in four ways.

In order to distinguish the four cases with one lamp for display, the lamp L uses four colors to show the current state of the provided service for the best understanding. It should be displayed.

For example, four cases will be described with reference to FIG. 18 (b). The notification means 1104 uses the recognition information of the control unit 1102 to indicate that the paging service and the voice call service are both “blue” and both are “blue”. When it is not possible, the lighting display is controlled so that it lights up in "red". Further, even if the same "blue", it is controlled to "blink blue" when the line quality is bad and to prolong the blinking cycle as the quality is poor.

Further, based on the recognition information of the control section 1102, the notifying means 1104 controls the lamp so as to reduce the brightness when the battery level is low, and informs the user that long-term service cannot be provided. Let me know

As described above, the state can be visually informed by using the lamp, and the user can use the terminal device 11 from this.
The state of 00 can be known.

However, the blinking cycle and the brightness of the lamp differ depending on the user, and the brightness is particularly susceptible to the surrounding environment. Therefore, as another example, as shown in FIG. 19A, two lamps of a paging service lamp L1 and a voice call service lamp L2 are prepared.

Then, when the remaining battery level of the terminal device 1100 is high, the notification means 1104 is caused to emit "blue" based on the recognition information of the control section 1102.
When the remaining amount is low, the switching lighting display control is performed so that the red light is emitted. Further, since the power consumption per unit time is different between the paging service and the voice call service, the service available time is different even with the same battery level (FIG. 19 (b)).

Considering this, there are cases where the paging service is turned on in "blue" and the telephone service is turned on in "red".

As described above, by displaying the type, quality, and time of the service using the lamp, the situation can be grasped, and the comfort of operating the wireless terminal 1100 can be improved. Like

As described above, the method in which the wireless terminal 1100 is provided with the lamp and the type, quality, and time of the service are displayed by using the lamp is simple in configuration, easy to control, and convenient, but the wireless terminal 1100 is convenient. As the number of receivers and service types increases, the number of lamps, types of colors, and types of blinking cycles will increase significantly, making it difficult to understand the situation by displaying with lamps. It is possible that

Therefore, a display method using a monitor screen such as a liquid crystal display for image display will be described next. As shown in FIG. 20 (a), this method uses a wireless terminal 1100.
In addition to the main monitor screen Dm, a sub monitor screen Ds for status display is provided, and the notification means 1104 is provided with a function capable of displaying a picture or character information according to the status. This display is performed by the notification means 1104 based on the recognition information of the control unit 1102. If you use the monitor screen, you can see the type of service with text and pictures,
It is possible to display "quality", "time", etc. In particular, pictorial expressions include "shape", "area (size)", "color",
Information such as "number", "position", "roughness of picture", etc. can be used for easy display to the user.

For example, as shown in FIG. 20 (b), by displaying a picture of "clear and cloudless state" on the sub-monitor screen Ds, it is possible to indicate that "the quality of service is good" and "quality". "The number of clouds will increase" according to "the deterioration of the image" ((c), (d),
(E)) A pictorial display of "sunset" indicates that "the service time is insufficient".

[0268] When a "human face" is drawn on a bitmap and it is drawn in "high definition", "good quality" is displayed.
(See FIG. 21 (a)) In the case of a "rough picture", "poor quality" is expressed (see FIG. 21 (b)), or when a "human smiling face" is displayed, When you say "You can receive all services", "When you are crying", it means "You cannot receive services at all", "Moon phases" and "Hourglass" display
As shown in FIG. 22, expressing “service time”, expressing the “number”, “type”, “quality” of services that can be provided by “flower bloom” and “flower type”, or “water tank” The "type", "number", and "movement" of the "fish that swim in the sea" are used to express the "type", "number", and "quality" of the services that can be provided, as well as the "type of animal" such as a dog or cat "Type", "number", and "quality" of services that can be provided by "number" and "movement"
Various expression methods are possible, such as expressing.

The method using such an animal makes it easy for the user to familiarize himself by making the best use of the "behaviour" and "characteristics" of the animal.
This is effective because it can represent the service provision state. For example, "eating food" indicates that "the battery is low" and is a symbol that prompts the user to replace the battery, or "dozes off", "disappears", or "houses". By getting inside
As a symbol expressing that the service cannot be provided (Fig. 23 (c)), or "the dog wanders around the power pole", so that "the communication quality is good" because it is on the side of the radio base station. (Fig. 23
(A)) Further, the closer the dog and the power pole are, the more intuitively and easily the display can be made such that "the communication quality is good" is expressed (FIG. 23).
(A)).

In this case, the user who feels that the communication quality has deteriorated during communication moves his or her position so that the "dog" symbolized on the display "approaches the utility pole". By doing so, communication quality can be maintained.

Further, the contents displayed on the sub-monitor screen can be more easily understood if they are expressed in two stages of "picture" and "character". For example, there are many types of services when the "flowers are in full bloom", and when you press the menu button at that time, many types of services are displayed with letters and pictures. If you press it, about half the types of services will be displayed with pictures and letters.

As described above, since the wireless terminal 100 capable of expressing pictures and characters using the monitor screen is not only easy to use but also can be operated while having fun, users of a wide range of ages can use it with familiarity. , A very desirable wireless terminal.

Next, a method of appealing to the hearing will be described.
In this case, the notification means 1104 has a function such as a speaker. Using this method, the user can know at least one of the type, quality, and time of the service that can be provided without looking at the wireless terminal 1100.
Further, a user who wants to receive a certain service but is absent in the service area moves by trial and error and searches for a service area of the service he or she wants to receive.

In such a situation, if the wireless terminal 1100 adopts the above-mentioned visual appeal method, the user needs to constantly look at the monitor screen of the wireless terminal 1100 to know the situation. There were many risks in moving inside the building while looking at the screen, which was a problem in terms of safety.

[0275] However, if the method appeals to hearing, the user can move without looking at the wireless terminal 1100, and thus can safely move to the service area that provides the desired service.

[0276] In this case, it is desirable that the wireless terminal 1100 notify the change when the "type", "quality", "time", etc. of the service that can be provided are changed. Further, the method of combining hearing and sight is more effective. For example, the user displays all the services on the monitor screen and selects a desired service from them. If the user is located in the service area, the user can immediately receive the service. However, if the user is not located in the service area, the wireless terminal 1100
When the user moves into the service area, a sound informs that the service can be provided.

As a result, it is possible to move to a service area that provides a desired service safely and promptly. In addition, "Dog barking voice" is adopted as a voice symbol display of the deterioration of the usage environment. For example, when the dog starts barking during the service using PHS (PHS is represented by a picture of a dog), the usage environment of PHS is It will be possible to perform tricks such as letting the user know that it is getting worse (Fig. 23).
(B)).

[0278] Further, when the dog starts to bark and eats the food, it is possible to reduce the remaining battery level and prompt the user to replace the battery.

[0279] As described above, by displaying with a voice symbol, it is convenient to be able to accurately inform the situation without looking at the screen.

[0280] By the way, the method of notifying by sound sometimes causes noise. For example, in a public vehicle, a theater, a meeting place where an unspecified number of people gather, etc., it is a great nuisance to others. Therefore, as a third notification method that does not cause such a problem, there is a method of appealing by touch.

A method of appealing to the sense of touch will be described. in this case,
The notification means 1104 has a vibration function by a motor or the like.
By changing the way of vibration, it is possible to notify the type, quality, time, etc. of the service that can be provided, but rather, it is more effective when combined with a method that appeals to the eyes as well as a method that appeals to the hearing. large.

This is a method that combines the methods of appealing to the auditory sense and the visual sense described above, and is a method of vibrating the wireless terminal 1100 instead of producing a sound.

As a result, it is possible to move to a service area that provides a desired service safely, promptly, and without making noise.

The above is an example in which the user is notified of the service available by wireless communication and the status of the service, for convenience.

Next, the terminal side is provided with a judging means for judging the type, quality, and time of the service that can be provided, so that the user of the terminal is informed, and the comfort of the user's operation of the terminal is impaired. Instead, the load of the terminal can be considerably reduced, and the terminal can be made smaller, lighter, and less expensive as a fifth specific example.

(Fifth Concrete Example) FIGS. 24 and 25 are diagrams showing a structural example of the wireless terminal 1300 or the terminal module 1400 relating to the above [B2]. This wireless terminal 13
00, terminal module 1400 has a built-in battery B
These wireless terminals 130 are driven by T.
0, the terminal module 1400 is the same as the wireless terminal 1100 and the terminal module 1200 shown in the fourth specific example, and “type”, “number”, “quality”, and wireless terminal 1 of receivable wireless signals.
"Type" and "quality" of different services that can be provided depending on a combination of at least one of the "battery level" of 100 or the terminal module 1200.
And "time", at least any one or more of them is added with a determination means 1301.

That is, the judging means 1301 receives the "type" of the radio signal that can be received from the information such as the received electric field strength in the receivers 1101a and 1101b obtained through the control means.
And the "number" and "quality", and also the measured wireless terminal 1 directly
The "remaining battery level" is known from the voltage or current of the 100 or the terminal module 1200, and at least one or more of these are combined to provide different "service types", "quality" and "services". time"
Among these, at least any one of them can be determined and the result can be obtained. Here, it is assumed that the wireless terminal 1100 has two receivers of a pager and a PHS, and the service that can be provided is the service called by the user by the pager ( FIG. 26 shows an example of an algorithm for the determination unit 1301 to make a determination, which is limited to two services, a paging service) and a PHS voice call service.

That is, the determination means 1301 obtains the measurement information of the received electric field strength of the pager radio signal, determines the quality of the paging service from this, and obtains the measurement information of the received electric field strength of the PHS radio signal. More to determine the quality of voice call service. Then, the type of service that can be provided is determined from the quality of the paging service and voice call service, and the remaining battery amount is measured to determine the service provided time that is the time when the paging service and voice call service can be provided. . The above is the contents of the algorithm shown in FIG.

In this way, the result judged by the judging means 1301 is notified to the user by the notifying means 1104.

[0290] The above is the type, quality, and
The terminal side has a determination means for determining the time so as to notify the user of the terminal. And
With this, without deteriorating the comfort of the user's terminal operation,
The load on the terminal can be considerably reduced, and the terminal can be made small, lightweight, and inexpensive.

By the way, such a function can be provided not on the terminal but on the network side so as to notify the user of the terminal. In that case, the comfort of the terminal operation of the user is not impaired, and The load can be considerably reduced, and the terminal can be further reduced in size, weight and cost. An example thereof will be described below as a sixth specific example.

(Sixth Concrete Example) [B3], [B4]
FIG. 27 shows an example of the configuration of a wireless communication system relating to the above. In the figure, 1500 is a service management manager, 150
1 is a pager base station, 1502 is a PHS base station, 1
Reference numeral 503 is a wireless LAN base station, which are connected via a network 1504. The wireless terminal 1505 is a movable portable terminal, and the wireless terminal 1505 transmits one or more uplink wireless signals (uplink wireless channel) to the wireless terminal 1100. It is equipped with.

The wireless terminal 1505 referred to here is a terminal module 1506 having one or more transmitters for transmitting one or more uplink wireless signals to the terminal module 1200 described in FIG.
And a terminal 1210 equipped with a user interface is connected.

The service management manager 1500 connected to the network 1504 recognizes the “type”, “number” and “quality” of wireless signals receivable by the wireless terminal 1505 or the terminal module 1506, and the wireless terminal 1505 or the terminal 1210. The information of the “battery level” is acquired, and the combination of at least any one or more of these information sets the “type”, “quality”, and “time” of the service provided by the wireless terminal 1505 or the terminal 1210. Of these, a determination unit 510 for determining any one or more elements is provided.

The algorithm used by the determining means 1510 for determination is the same as the algorithm of the determining means 1301 described with reference to FIG.

[0296] The "type" and "number" of wireless signals receivable by the wireless terminal 1505 or the terminal module 1506.
And “quality” and a combination of at least one of the “battery level” of the wireless terminal 1505 or the terminal 1210 is the wireless terminal 1505 or the terminal module 15
From 06, it is transmitted to the judging means 1510 via at least one uplink radio signal (FIG. 28).

As a result, the service management manager 15
00 can determine the type, quality, and time of the service that can be provided by the wireless terminal 1505 or the terminal 1210.
Then, the service management manager 1500 notifies the wireless terminal 1505 or the terminal 1210 of this determination result.

The wireless terminal 1505 or the terminal 1210 is
The user is notified using the notification means 1104 as described in the fourth specific example.

[0299] Thus, the types of services that can be provided,
By providing the service management manager provided on the network side, not the terminal, with the determination means for determining quality and time, the load on the terminal can be considerably reduced without impairing the user's comfort of operating the terminal. It is possible to further reduce the size, weight and cost of the terminal.

Appropriate control when a communication service is received between wireless terminals will be described below. If the type, quality, and remaining battery level of the wireless signal that can be received by the calling side and the type, quality, and remaining battery level of the wireless signal that can be received by the called side are different, communication in the best condition is the best. Even if you do it, it will be useless if the other party's condition is bad.

That is, when a communication service is received between wireless terminals, the type and quality of wireless signals that can be received by the calling side,
Battery level and wireless signal type that can be received by the called side,
If the quality and battery level are different, useless communication will be performed unless the bad one is matched, and if the service available in the good condition is not available to the poor one or is restricted. This will cause you to get confused in using the service. Therefore, an example in which the type, quality, time, etc. of an appropriate service that can be provided can be notified in consideration of the situations of both sides of communication to make it convenient for the user will be described as a seventh specific example.

(Seventh Concrete Example) FIG. 29 shows a structural example of a radio communication system relating to the above [B3-a]. In the figure, 1600 is a service management manager, 1501 is a pager base station, 1502 is a PHS base station, 1503.
Is a base station for wireless LAN, and these are network 5
It is connected via 04. In addition, the wireless terminal 1505
a and 1505b are provided with one or more transmitters for transmitting one or more uplink radio signals (uplink radio channels) to the radio terminal 1100.

Note that the wireless terminals 1505a and
505b is the terminal module 1200 described in FIG.
A terminal module 1506 equipped with one or more transmitters for transmitting one or more uplink radio signals and a terminal 12 equipped with a user interface.
It is assumed to include those in which 10 is connected.

Further, the wireless terminals 1505a and 1505b have a battery measuring function, and when receiving a battery measurement command from the base station side, their own batteries are measured and the measurement result is sent to the base station side. It has the function of returning.

In the following, the wireless terminals 1505a and 1505b will be described.
Will be explained. Wireless terminal 1505a and wireless terminal 15
When receiving a communication service with 05b, the service management manager 1600 determines that the wireless terminals 1505a,
"Type" and "number" of wireless signals that can be received by both 05b
And “quality”, and “remaining battery level” of the wireless terminals 1505a and 1505b, the wireless terminals 1505a and 1505 are combined according to a combination of at least one or more pieces of information.
The determination means 1610 is provided to determine any one or more of the "type", "quality", and "time" of the service provided to the user b.

Here, the wireless terminals 1505a and 1505b are used.
Is provided with a PHS transceiver, and when the services that can be provided are limited to two, that is, the voice call service and the image transmission service by PHS, the determination means 1610 can provide the “type” and “quality” of the service. An example of an algorithm for determining ",""time," etc. is shown in FIG.

Explaining the procedure of FIG. 30, the electric field strengths of the PHS radio signals of the radio terminals of both the calling side and the called side are measured, and the quality of both the voice call service and the image transmission service is measured from the measurement results. To decide. Then, the type of service that can be provided is determined based on the quality of both the voice call service and the image transmission service. Then, the remaining battery level of both the calling and called side wireless terminals is measured by instructing both terminals to return the measurement results, and the voice call is made from the resulting remaining battery level values. The service available time of both the service and the image transmission service is determined.

[0308] As described above, when receiving communication service between wireless terminals, this is the type and quality of the wireless signal that can be received by the calling side, the remaining battery level, and the wireless signal that can be received by the called side. The type of service that can be provided, even if the type, quality, and remaining battery level are different,
This is an algorithm for determining quality, time, etc.

In this determination, for example, when determining the service providing time, the wireless terminals 1505a and 1505b
The battery remaining amount of both is measured, and the service providing time is usually determined according to the battery remaining amount. Therefore, in such a case, the service provision time is short even though the battery level of the terminal is large,
Although the received electric field strength of the own terminal is strong, the quality of service may be poor.

FIG. 31 shows an example of notification of the type, quality, time, etc. of the service that can be provided in such a case. FIG. 31 is an example in which the service providing time and the communication quality of the own terminal and the partner terminal are respectively notified. As shown in the figure, two wine bottles are displayed, and the service time calculated from the remaining battery level of the own terminal and the service calculated from the remaining battery level of the other terminal based on the remaining amount of wine remaining in the glass. Express time.

If the user finds that the service providing time is short because the remaining battery level of the terminal is low, the user can easily understand that it is better to refill the battery. If the wine is colored and it is "red wine", the "reception field strength is strong".
Therefore, the quality is good, and in the case of "white wine", "the received electric field strength is weak", and thus the poor quality may be expressed.

By doing this, the user can easily understand that when the received electric field strength of the terminal itself is small, the user can move to a place where the received electric field strength is strong. In addition, regarding the comprehensive state evaluation in the method in which the states of the own terminal and the partner terminal are separately displayed in this way, for example, in the case of service time, the service time of the terminal with the shorter service time is Will be equal. This is because if the battery of one terminal runs out, communication between the two terminals cannot be performed even if the other terminal has a sufficient battery level.

In addition, a combination of at least one of “type”, “number”, “quality”, and “remaining battery level” of the wireless signals receivable by the wireless terminals 1505a and 1505b is determined by the wireless terminals 1505a and 1505b. At least one uplink radio signal is sent to the base station, which receives the base station and sends it to the service management manager 1600 via the network 1504. Then, the service management manager 1600 transfers the received information to the judging means 1510 (FIG. 28). And the judging means 1
At 510, this information is used for determination.

As a result, the service management manager 16
00 can determine the “type”, “quality”, and “serviceable time” of the service that can be provided by the wireless terminals 1505a and 1505b. Then, the service management manager 1600 notifies the wireless terminals 1505a and 1505b of the result determined by the determination means 1510. Wireless terminal 1
Reference numerals 505a and 1505b denote the fourth specific example and FIGS.
The user is notified using the notification means 1104 as described above.

As described above, the service management manager uses the "type", "number", "quality", and "remaining battery level" of the radio signals that can be received by the called terminal as well as the called terminal to provide the service. Equipped with judgment means for judging the "type", "quality", and "serviceable time" of available services, the situation of the other party as well as the situation of the other party is included in the judgment material, and a comprehensive judgment is made. Since the result is presented to the user,
Even when a communication service is received between wireless terminals, it is possible to correctly determine the "type", "quality", and "serviceable time" of the service that can be provided.

Further, by providing the service management manager, not the terminal, with the determination means for determining the type, quality and serviceable time of the service to be provided,
The load on the terminal can be considerably reduced without impairing the user's comfort in operating the terminal, and the terminal can be made small, lightweight and inexpensive.

Next, each wireless terminal receives information such as the type, number, and quality of receivable wireless signals, the remaining battery level of the wireless terminal, and the like, and saves this information for communication. An example in which the wireless terminal can determine the type, quality, and available time of the service that can be provided by using these pieces of information and present the result to the user will be described as an eighth specific example.

(Eighth Concrete Example) FIG. 32 shows a structural example of a radio communication system relating to the above [B2-a]. In the figure, 1700 is a terminal management unit, 1501 is a pager base station, 1502 is a PHS base station, and 1503 is a wireless LAN.
Base stations, which are connected via a network 1504. In addition, the wireless terminals 1705a and 170
5b comprises a transmitter or transmitters for transmitting the uplink radio signal or signals to the radio terminal 1300.

Note that the wireless terminals 1705a, 1705a, 1
705b is the terminal module 1400 described in FIG.
A terminal module 1506 having one or more transmitters for transmitting one or more uplink radio signals and a terminal 1 having a user interface
It is assumed to include a connection of 210. In the following description, the wireless terminals 1705a and 1705b will be used.

The terminal management unit 1700 is a device that receives information such as the type and number and quality of receivable wireless signals from each wireless terminal and the remaining battery level of the wireless terminal, and stores the information.

The wireless terminals 1705a and 1705b regularly combine at least one of the types and number and quality of wireless signals receivable by the wireless terminals 1705a and 1705b and the remaining battery level of the wireless terminals 1705a and 1705b. Is notified to the terminal management unit 1700 connected to the network 1504 using an uplink radio signal.

The terminal management unit 1700 has a function for each wireless terminal 170.
The information sent from 5 is stored. Wireless terminal 17
05a wants to receive a communication service with the wireless terminal 1705b, the terminal management unit 1700 informs the wireless terminal 1705b of the communication partner of the type and number of wireless signals that can be received, the quality, and the battery of the wireless terminals 1705a and 1705b. A combination of at least one or more of the remaining amount is read out.

Then, the read information, the type and number and quality of wireless signals receivable by the own terminal, the wireless terminal 1705a,
The type, quality, time, etc. of the service that can be provided are determined based on the combination of at least one or more of the remaining battery levels of 1705b. Since the determination algorithm is the same as that of the fourth specific example, redundant description will be omitted here. The notification method is also the same as in the seventh specific example, and will not be described. In this way, the wireless terminal 1705
a and 1705b are types of radio signals that can be received not only by the calling terminal but also by the called terminal read from the terminal management unit,
Since it has a determination means for determining the type, quality, and time of the service that can be provided by using the number, quality, and remaining battery level, even when receiving communication services between wireless terminals,
It is possible to correctly determine the type, quality, and time of the service that can be provided. From this, it becomes possible to inform the user of the types of services that can be provided, the quality, and the time that they are provided. The notification can be made by using pictures, lights, sounds, characters, etc. Different types of service, quality, and time can be easily and enjoyably recognized by anyone.

Although various specific examples have been described above, the present invention is not limited to the examples shown here, and various modifications can be carried out.

[0325]

As described above in detail, according to the present invention,
It is possible to provide a control procedure for efficiently performing information transmission in a wireless communication system having upper and lower narrow band wireless channels and wide band down wireless channels. In a wireless communication system having channels, when a wireless terminal receives information via a wideband downlink wireless channel, the wireless terminal is basically allocated to upper and lower narrowband wireless channels. It enables communication using the downlink wireless channel of the above, and also uses the upper and lower narrow band wireless channels as wireless channels for controlling the information transmission using the wideband downstream wireless channel to be efficient transmission. Made it possible.

Further, according to the present invention, the kind, quality, and time of services that can be provided can be easily and enjoyably recognized by anyone. As a result, users of various age groups can receive various services using the wireless terminal.

[Brief description of drawings]

FIG. 1 is a diagram of a configuration example of a wireless communication system targeted by the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a wireless terminal 100 in the system of the present invention.

FIG. 3 is a diagram showing an example of a frame structure in upper and lower narrow band wireless channels targeted by the present invention.

FIG. 4 is a flowchart for explaining a first specific example of the present invention.

FIG. 5 is a flowchart for explaining a first specific example of the present invention.

FIG. 6 is a flowchart for explaining a first specific example of the present invention.

FIG. 7 is a diagram of a frame configuration example for explaining a second specific example of the present invention.

FIG. 8 is a diagram showing a frame configuration example for explaining a second specific example of the present invention.

FIG. 9 is a diagram showing a frame configuration example for explaining a second specific example of the present invention.

FIG. 10 is a diagram showing a frame configuration example for explaining a second specific example of the present invention.

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

FIG. 12 is a diagram for explaining a third specific example of the present invention.

FIG. 13 is a diagram for explaining a third specific example of the present invention.

FIG. 14 is a diagram for explaining a conventional technique.

FIG. 15 is a diagram showing a configuration example of a wireless terminal according to a fourth specific example of the present invention.

FIG. 16 is a diagram showing a configuration example of a terminal module according to a fourth example of the present invention.

FIG. 17 is a diagram illustrating an outline of a wireless terminal, a terminal module, and a terminal according to a fourth example of the present invention.

FIG. 18 is a diagram illustrating a display example of a provided service according to a fourth specific example of the present invention.

FIG. 19 is a diagram illustrating a display example of a provided service according to the fourth specific example of the present invention.

FIG. 20 is a diagram for explaining a display example of the provided service according to the fourth example of the present invention.

FIG. 21 is a diagram for explaining a display example of the provided service according to the fourth example of the present invention.

FIG. 22 is a diagram for explaining a display example of the provided service according to the fourth specific example of the present invention.

FIG. 23 is a diagram for explaining a display example of a provided service according to the fourth specific example of the present invention.

FIG. 24 is a block diagram showing a schematic configuration example of a wireless terminal according to a fifth example of the present invention.

FIG. 25 is a block diagram showing a schematic configuration example of a terminal module according to a fifth example of the present invention.

FIG. 26 is a diagram showing an example of a determination algorithm of determination means according to fifth and sixth examples of the present invention.

FIG. 27 is a diagram showing a configuration example of a wireless communication system according to a sixth example of the present invention.

FIG. 28 is a diagram showing an example of a sequence diagram according to a sixth example of the invention.

FIG. 29 is a diagram showing a schematic configuration example of a wireless communication system according to a seventh example of the present invention.

FIG. 30 is a diagram showing an example of a determination algorithm of determination means according to the seventh and eighth specific examples of the present invention.

FIG. 31 is a diagram showing a display example of the provided service according to the seventh and eighth concrete examples of the present invention.

FIG. 32 is a diagram showing a configuration example of a wireless communication system according to an eighth example of the present invention.

[Explanation of symbols]

100, 1100 ... Wireless terminal 101 ... Broadband wireless base station 102 ... Narrow band wireless base station 103 ... server 104 ... Network 1101a, 1101b ... Receiver 1102 ... Control unit 1103 ... Terminal part 1104 ... Notification means 1105 ... Judgment means 1200 ... Terminal module 1500 ... Service management manager 1501 ... Pager base station 1502 ... PHS base station 1503 ... Wireless LAN base station 1504 ... Network 1505 ... Wireless terminal 1506 ... Terminal module 1510 ... Judgment means

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[Procedure amendment]

[Submission date] January 22, 2003 (2003.1.2
2)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Delete

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0037

[Correction method] Delete

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Delete

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Delete

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0040

[Correction method] Delete

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0041

[Correction method] Delete

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0042

[Correction method] Delete

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0043

[Correction method] Delete

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0044

[Correction method] Delete

[Procedure Amendment 11]

[Document name to be amended] Statement

[Name of item to be corrected] 0045

[Correction method] Delete

[Procedure Amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0046

[Correction method] Delete

[Procedure Amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Delete

[Procedure Amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0048

[Correction method] Change

[Correction content]

(1) The thirteenth invention is an invention for coping with the fact that the information transmission using the broadband downlink radio channel has a burst-like traffic characteristic, and the information using the broadband downlink radio channel is provided. Since the transmission has bursty traffic characteristics, the traffic characteristics of the radio channels above and below the narrow band that control it also become bursty, and in such a situation, other narrow band wireless base stations in the vicinity may As a result of assigning the same channel to wireless terminals, the purpose is to deal with the situation of inter-channel interference problem, narrow band wireless base station having a narrow band transmitting and receiving means for information transmission, A wideband radio base station having a wideband transmission means for transmitting information, and a narrowband transmission / reception means for transmitting / receiving information between the narrowband radio base station And a wireless terminal having a wideband receiving means for receiving information from the wideband wireless base station, and a time slot in which a wireless transmission path between the narrowband wireless base station and the wireless terminal is time-divided at equal intervals. In a wireless communication system in which a frame is composed of a plurality of frames, when the wireless terminal receiving information from the wideband wireless base station transmits / receives information to / from the narrowband wireless base station, the plurality of times It is characterized in that a specific time slot is used among the slots.

[Procedure Amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0049

[Correction method] Change

[Correction content]

(2) A fourteenth invention is intended to provide a wireless communication system for efficiently associating a narrow band upper and lower radio channels with a wide band downlink radio channel, and is intended for information transmission. Narrow band wireless base station having narrow band transmitting / receiving means, wide band wireless base station having wide band transmitting means for information transmission, and narrow band transmitting / receiving for transmitting / receiving information to / from the narrow band wireless base station Means and a wireless terminal having a broadband receiving means for receiving information from the broadband wireless base station, wherein a wireless transmission path between the narrowband wireless base station and the wireless terminal is time-divided at equal intervals. A first frame is composed of a plurality of one time slots, and one second time slot in which a wireless transmission path from the broadband wireless base station to the wireless terminal is time-divided at equal intervals, or In a wireless communication system in which a plurality of second frames are configured, the time length of the second frame is an integral multiple of the time length of the first frame.

[Procedure Amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0050

[Correction method] Change

[Correction content]

(3) A fifteenth aspect of the invention is to provide a wireless communication system for efficiently associating a narrow band upper and lower radio channels with a wide band downlink radio channel for information transmission. Narrow band wireless base station having a narrow band transmitting and receiving means, a wide band wireless base station having a wide band transmitting means for information transmission, and a narrow band for transmitting and receiving information to and from the narrow band wireless base station. A wireless terminal having a transmitting / receiving means and a wideband receiving means for receiving information from the wideband wireless base station, and a wireless transmission path between the narrowband wireless base station and the wireless terminal is time-divided at equal intervals. A second time slot in which a first frame is composed of one or a plurality of first time slots and a wireless transmission path from the broadband wireless base station to the wireless terminal is time-divided at equal intervals. In a wireless communication system in which the second frame is composed of one or a plurality of frames, and the first time slot and the second time slot have a correspondence relationship, at least one or more first frames When the wireless terminal to which the time slot is assigned receives information from the broadband wireless base station, it is assigned a second time slot corresponding to the at least one or more first time slots. And

[Procedure Amendment 17]

[Document name to be amended] Statement

[Correction target item name] 0051

[Correction method] Change

[Correction content]

(4) A sixteenth invention is intended to provide a wireless communication system for efficiently associating a narrow band upper and lower radio channels with a wide band downlink radio channel, and is intended for information transmission. Narrow band wireless base station having narrow band transmitting and receiving means, wide band wireless base station having wide band transmitting means for information transmission, and narrow band for transmitting and receiving information between the narrow band wireless base station A wireless terminal having a transmitting / receiving means and a broadband receiving means for receiving information from the broadband wireless base station, and a wireless transmission path between the narrow band wireless base station and the wireless terminal is time-divided at equal intervals. A first frame is composed of one or a plurality of first time slots, and a wireless transmission path from the broadband wireless base station to the wireless terminal is time-divided into two equal time divisions. Time slot In the wireless communication system in which the second frame is composed of one or a plurality of packets, when the wideband wireless base station transmits information, the narrowband wireless base station uses the first time slot. At least one of the second time slot used by the broadband wireless base station and the wireless terminal to which the information is transmitted is notified.

[Procedure 18]

[Document name to be amended] Statement

[Correction target item name] 0052

[Correction method] Change

[Correction content]

(5) A seventeenth invention is intended to provide a wireless communication system for efficiently associating a narrow band upper and lower radio channels with a wide band downlink radio channel, which is used for information transmission. Narrow band wireless base station having narrow band transmitting / receiving means, wide band wireless base station having wide band transmitting means for information transmission, and narrow band transmitting / receiving for transmitting / receiving information to / from the narrow band wireless base station Means and a wireless terminal having a broadband receiving means for receiving information from the broadband wireless base station, wherein the wireless transmission path between the narrowband wireless base station and the wireless terminal is time-divided at equal intervals. A first frame is composed of one time slot or a plurality of time slots, and a second time slot in which a wireless transmission path from the broadband wireless base station to the wireless terminal is time-divided at equal intervals. In the wireless communication system in which the second frame is composed of a plurality of packets and the narrowband wireless base station notifies the wideband wireless base station of the start time of the first frame, the start time of the first frame is , Is notified using a line fixedly allocated between the narrow band wireless base station and the wide band wireless base station.

[Procedure Amendment 19]

[Document name to be amended] Statement

[Correction target item name] 0053

[Correction method] Change

[Correction content]

(Operation) A radio terminal which wants to receive information from a server using a wide band downlink radio channel transmits an information request signal by random access using a narrow band uplink radio channel. Narrow band wireless base station that received this,
The narrow band upper and lower radio channels are allocated to the radio terminal. Further, the information request signal is sent to the server via the network. The server instructs the broadband wireless base station to allocate a broadband downlink wireless channel after the upper and lower narrow band wireless channels have been assigned to the wireless terminal, and the broadband wireless base station which has received the instruction instructs the broadband wireless base station to perform the wireless communication. A wideband downlink radio channel is assigned to the terminal. Thus, the wireless terminal can receive information from the server by using the downlink radio channel wideband. Further, the upper and lower narrow band radio channels can be used as control channels for controlling information transmission using the wideband downlink channel, and as a result, information transmission using the wideband downlink channel can be efficiently performed. It will be possible.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Katsuya             1st Komukai Toshiba-cho, Sachi-ku, Kawasaki-shi, Kanagawa             Inside the Toshiba Research and Development Center (72) Inventor Eiji Kamagata             1st Komukai Toshiba-cho, Sachi-ku, Kawasaki-shi, Kanagawa             Inside the Toshiba Research and Development Center (72) Inventor Nobuyasu Nakajima             1st Komukai Toshiba-cho, Sachi-ku, Kawasaki-shi, Kanagawa             Inside the Toshiba Research and Development Center F-term (reference) 5K067 AA34 AA43 BB04 CC04 DD19                       DD43 DD44 EE04 EE10 EE23                       EE71 FF05 FF19 FF24 HH22                       HH23 JJ02 JJ17 JJ37 KK03

Claims (8)

[Claims] 1. A narrowband wireless base station having a narrowband transmitting / receiving means for transmitting information, a storage means for storing information addressed to the wireless terminal, and information for the wireless terminal stored in the storage means. A wideband radio base station having a wideband transmission means for providing information transmission, and a narrowband transmission / reception means for transmitting / receiving information to / from the narrowband radio base station and information from the wideband radio base station. In a wireless communication system comprising a wireless terminal having wideband receiving means for receiving, information transmission from the wideband wireless base station to the wireless terminal or information transmission between the narrowband wireless base station and the wireless terminal Among the above, it is provided with a function of erasing the information addressed to the wireless terminal stored in the storage means when at least one of the information transmission becomes impossible. Wireless communication system to collect. 2. A narrow band wireless base station having narrow band transmitting / receiving means for information transmission, a wide band wireless base station having wide band transmitting means for information transmission, and the narrow band wireless base station. A wireless terminal having a narrowband transmitting / receiving means for transmitting / receiving information and a wideband receiving means for receiving information from the wideband wireless base station, between the narrowband wireless base station and the wireless terminal. In a wireless compliance system in which a frame is composed of a plurality of time slots in which a wireless transmission path is time-divided at equal intervals, the wireless terminal receiving information from the wideband wireless base station is the narrowband wireless base station. A wireless communication system, wherein a specific time slot is used among the plurality of time slots when transmitting and receiving information to and from the wireless communication system. 3. A narrow band wireless base station having narrow band transmitting / receiving means for information transmission, a wide band wireless base station having wide band transmitting means for information transmission, and the narrow band wireless base station. A wireless terminal having a narrowband transmitting / receiving means for transmitting / receiving information and a wideband receiving means for receiving information from the wideband wireless base station, between the narrowband wireless base station and the wireless terminal. The first frame is composed of one or a plurality of first time slots in which the wireless transmission path is time-divided at equal intervals, and a wireless transmission path from the broadband wireless base station to the wireless terminal is provided. In a wireless communication system in which a second frame is composed of one or a plurality of second time slots that are time-divided at equal intervals, the time length of the second frame is equal to that of the first frame. A wireless communication system characterized by being an integral multiple of a time length. 4. A narrow band wireless base station having narrow band transmitting / receiving means for information transmission, a wide band wireless base station having wide band transmitting means for information transmission, and the narrow band wireless base station. A wireless terminal having a narrowband transmitting / receiving means for transmitting / receiving information and a wideband receiving means for receiving information from the wideband wireless base station, between the narrowband wireless base station and the wireless terminal. The first frame is composed of one or a plurality of first time slots in which the wireless transmission path is time-divided at equal intervals, and a wireless transmission path from the broadband wireless base station to the wireless terminal is provided. The second frame is composed of one or more second time slots that are time-divided at equal intervals, and
In a wireless communication system in which the first time slot and the second time slot have a correspondence relationship, the wireless terminal to which at least one or more first time slots are allocated receives information from the broadband wireless base station. In this case, the wireless communication system is configured to receive the allocation of the second time slot corresponding to the at least one or more first time slots. 5. A narrow band wireless base station having narrow band transmitting / receiving means for information transmission, a wide band wireless base station having wide band transmitting means for information transmission, and the narrow band wireless base station. A wireless terminal having a narrowband transmitting / receiving means for transmitting / receiving information and a wideband receiving means for receiving information from the wideband wireless base station, between the narrowband wireless base station and the wireless terminal. The first frame is composed of one or a plurality of first time slots in which the wireless transmission path is time-divided at equal intervals, and a wireless transmission path from the broadband wireless base station to the wireless terminal is provided. In a wireless communication system in which a second frame is composed of one or a plurality of second time slots that are time-divided at equal intervals, in the case where the broadband wireless base station transmits information, A narrowband wireless base station uses a first time slot to report at least one of a second time slot used by the broadband wireless base station and the wireless terminal to which information is transmitted. And a wireless communication system. 6. A narrow band wireless base station having narrow band transmitting / receiving means for information transmission, a wide band wireless base station having wide band transmitting means for information transmission, and the narrow band wireless base station. A wireless terminal having a narrowband transmitting / receiving means for transmitting / receiving information and a wideband receiving means for receiving information from the wideband wireless base station, between the narrowband wireless base station and the wireless terminal. The first frame is composed of one or a plurality of first time slots in which the wireless transmission path is time-divided at equal intervals, and a wireless transmission path from the broadband wireless base station to the wireless terminal is provided. A second frame is composed of a plurality of second time slots that are time-divided at equal intervals, and the narrowband radio base station notifies the wideband radio base station of the start time of the first frame. In the communication system, the start time of the first frame is configured to be notified by using a line fixedly assigned between the narrowband wireless base station and the wideband wireless base station. Communications system. 7. The wireless communication system according to claim 2, wherein the narrow band transmission / reception is performed within a period in which the wireless terminal receives the data of the second time slot by the wide band receiving means. Means allocates the first and second time slots so that the wireless terminal does not transmit a control signal in the first time slot, or the start time of the first and second frames, or , A wireless communication system having a configuration for controlling a transmission time of a terminal. 8. A wireless device equipped with a single or multiple receivers for receiving single or multiple types of wireless signals corresponding to a communication method using single or multiple types of wireless signals A wireless communication system comprising an informing means for informing at least one of the types, qualities, and times of services that can be provided.