JP2001359171A - Radio communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent any radio resource and as a frequency (radio channel) or battery from being wasted without decreasing the through-put in a radio communication system constituted of a radio base station and a radio terminal connected through a communication line, and provided with plural support protocols for periodically transmitting an incoming call message at the time of operating simultaneous incoming to the radio base station and the radio terminal. SOLUTION: When an incoming call message indicating simultaneous incoming is transmitted a base station maps the protocol classification of a radio communication system in the incoming call message by a mapping means, and transmits the mapped protocol classification before responding to the incoming by using a PS number area being an area which is not referred to by a slave device with the incoming call message at the time of operating the simultaneous call.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication system including a radio base station connected to a telephone line and a radio terminal for performing radio communication with the base station. Related to the control method.

[0002]

2. Description of the Related Art Conventionally, since a wireless terminal itself has protocol software for a wireless terminal in a wireless communication system including a wireless base station and a wireless terminal as data such as a ROM, the Software cannot generally be changed.

In recent years, a plurality of protocols have been prepared for wireless terminals, and protocols have been matched by negotiation at the start of communication, thereby establishing a system that allows the calling and called terminals to communicate properly. Have been.

[0004] PIAFS (PHS Internet)
In an Access Forum Standard transmission system, a protocol negotiation is performed at the start of communication, and there is an in-band negotiation configuration that specifies which protocol is used for communication. This is to make it possible to support future new protocols such as image transmission.

FIG. 9 is a diagram showing a frame structure in a conventional in-band negotiation.

[0006] The frame structure in the in-band negotiation shown in FIG. 9 has a field P1 for indicating a first priority protocol type.

FIG. 10 is a diagram showing an example of the contents displayed in the conventional first priority protocol type P1.

As shown in FIG. 10, a data transmission protocol (fixed speed), a real-time protocol, a data transmission protocol (variable speed type 1), and a data transmission protocol (variable speed type 2) are displayed according to the values.

Here, after the protocol is matched,
Move to the data communication phase.

[0010]

However, the above conventional example has the following problems. (1) Since a communication time is required in a negotiation part which is not transmission of original data, there is a problem that a throughput is reduced. (2) In PIAFS, it is assumed that a PHS radio link defined in RCR STD-28 is established. If it takes time for negotiation in PIAFS, radio resources such as a frequency (wireless line) and a battery are used. There is a problem of waste. (3) PIAFS presupposes that a PHS radio link specified in RCR STD-28 has been established, and if protocol matching is NG at the time of PIAFS negotiation, it is necessary to establish a radio link up to that time. There is a problem in that wireless resources such as the used frequency (wireless line) and battery are wasted.

An object of the present invention is to provide a wireless communication system in which throughput does not decrease and wireless resources such as a frequency (wireless line) and a battery are not wasted.

[0012]

SUMMARY OF THE INVENTION The present invention comprises a radio base station and a radio terminal connected to a communication line, has a plurality of supported protocols, and simultaneously broadcasts a call to the radio base station and the radio terminal. When performing, in a wireless communication system that periodically transmits an incoming call message, when the base station transmits an incoming call message indicating simultaneous paging, the protocol type of the wireless communication system is included in the incoming call message. By using the PS number area, which is an area that is not referred to by the slave unit in the incoming call message, at the time of simultaneous reception by the mapping means, the mapping means transmits the mapped protocol type before the incoming call response. Is what you do.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 is a block diagram showing a digital cordless system according to an embodiment of the present invention.
FIG. 1 is a diagram showing a configuration of a telephone system 100.

Digital cordless telephone system 10
0 is an example of a wireless communication system. In the digital cordless telephone system 100, the network 107
Is a network for constructing a self-managed mode PHS system, and has a network control unit 108 for controlling the entire system.

The radio base station 102a is a radio base station accommodated in the network 107 and connected by the communication line 101a, and the radio base station 102b is accommodated in the rope 107 and connected by the communication line 101b. The wireless communication terminals 103 to 106 are base stations, and are wireless communication terminals connected to the wireless base stations 102a and 102b by wireless lines and performing communication.

FIG. 2 shows a wireless communication terminal 10 in the digital cordless telephone system 100 according to the embodiment.
FIG.

In the above embodiment, the wireless medium is a PHS (Personal Handy Phone System, Personal)
This is an example of a digital cordless telephone system which is a self-operating mode of Handyphone System.

The wireless communication terminal 103 includes an antenna 1 for transmitting and receiving radio waves, an RF unit 2 for transmitting and receiving, a modem unit 3 for modulating transmission data and demodulating received data, and a TDMA for disassembling / assembling frames. Channel C that performs processing, error detection processing, scramble processing, and data privacy processing
Inputs and outputs analog audio signals to and from the ODEC unit 4
It encodes and decodes the signal into a PCM signal.
An audio processing unit 5 for inputting and outputting audio signals to and from the microphone 6, a receiver 7, a control unit 8 for controlling each unit of the wireless communication terminal, and a key operation unit 12 for controlling various key inputs. And a display unit 13 for displaying various information, and a protocol type storage unit 14 for temporarily storing the received protocol type in the PIAFS.

The control unit 8 has a storage unit 9 for storing a radio protocol for executing a communication protocol process from the layer 1 to the layer 3 of the PHS in accordance with a procedure specified in the RCR STD-28, and a data transmission protocol for the PIAFS. (Speed fixed), a PIAFS protocol storage unit 14 for storing various protocols such as a real-time protocol, and an information processing unit 10 for performing various information processing based on an input from the key operation unit 12 and data received from a wireless line. And a display control unit 11 that controls display on the display unit 13 based on data from the information processing unit 10.

The configuration of each of the wireless communication terminals 104 to 106 is the same as the configuration of the wireless communication terminal 103 shown in FIG.

Next, the operation of the above embodiment will be described.

FIG. 3 is a flowchart showing the operation of the above embodiment.

When the operator of wireless communication terminal 103 executes a predetermined operation for calling a data communication via key operation unit 12 (ST1), information processing unit 10 analyzes the contents of the key operation. , And notifies the wireless protocol storage unit 9 to start data communication. Wireless protocol storage 9
Receives this notification, the radio base station 102a,
A data communication call request is issued (ST2). In particular,
A predetermined message is transmitted to the base station. At this time, P
IAFS (PHS Internet Access)
The type of the protocol used for data communication is stored in the above-mentioned predetermined message in accordance with the Forum Standard, and transmitted to the base station.

Here, "00000001": data transmission protocol (fixed speed) is transmitted according to the contents of the table shown in FIG.

Next, the called-side radio base station 102b creates an incoming call message to be transmitted to the radio communication terminal 103 (ST3).

FIG. 4 is a diagram showing the contents of an incoming call message in the above embodiment.

In the case of a simultaneous incoming call, "101" (representing a call service based on the extended call service type) is notified to the call service type area, and "0001" is notified to the extended call service type area.

FIG. 5 is a diagram showing an example of an incoming call message format at the time of simultaneous incoming call in the above embodiment.

As shown in FIG. 5, four of octets 1 to 7
Eight bits are a reserved area.

FIG. 6 is a diagram showing an example of an incoming call message format at the time of transmitting a protocol type in the above embodiment.

In the above embodiment, it is assumed that the protocol type is transmitted using the extended call service area, and for the sake of convenience, the extended call service type area is set as shown in FIG. “0011” is assumed. When the data amount of the protocol type is small,
The extended call service area is filled using the filler (0000).

According to the incoming call message format at the time of transmitting the protocol type as shown in FIG. 6, the radio base station 102b maps the protocol type "00000001" received earlier from the radio communication terminal 103 to a predetermined position, and Create a call message.

FIG. 7 is a diagram showing an example of an incoming call message format in the above embodiment.

Here, as shown in FIG. 7, 8 bits are mapped from the head position of the reserved area, and the remaining area is used as filler.

Next, the wireless base station 102b sends out an incoming call message to all registered wireless communication terminals as a simultaneous incoming call (ST4).

All the radio communication terminals that have received the incoming call message (ST5) have the value of the call service type area in the received call message of "101" and the value of the extended call service type area of "0011". Then, since the transmission is of the protocol type, it is determined whether or not the link specified by the protocol type is provided without immediately establishing a link channel as an incoming response (ST
6).

If the determination is OK, subsequent data communication is possible, and a response is returned to the radio base station. At the same time, the protocol type is extracted from the area in the message and temporarily stored in the protocol type storage unit 15 (ST7).

Here, the plurality of wireless communication terminals are determined to be OK.
If so, only the wireless communication terminal with the earliest response shifts to the link channel establishment phase. Specifically, a link channel establishment request message is transmitted as a response to the radio base station.

The wireless base station 102b returns a link channel assignment message to the wireless communication terminal that first transmitted the link channel establishment request message. The wireless communication terminal that has received the link channel assignment message shifts to a service channel establishment phase and enters a communication state (a wireless link is established) (ST8).

The other wireless communication terminals for which the determination is NG are not able to perform data communication, and therefore continue the normal standby operation without responding (ST10).

The wireless communication terminal with which the wireless link has been established is P
Start the IAFS protocol. At this time, the protocol type temporarily stored is read out with reference to the protocol type storage unit.

Here, according to FIG. 10, the value is “000”.
0000 ", the data transmission protocol (fixed speed) is selected and notified to the PIAFS protocol storage unit 14. Thus, data communication using the data transmission protocol (fixed speed) is performed (ST9).

If there is no radio communication terminal for which the determination is OK (ST6), the radio base station continues to wait for a response from the radio communication terminal. Return a notification without. The calling wireless communication terminal notifies the user of this to the effect of the billiphone.

As described above, when there is a call request for data communication from the radio communication terminal, the radio base station does not perform the operation of specifying the radio communication terminal by the PS number, but performs the paging of the radio base station in a simultaneous incoming call form. The protocol type is transmitted to all wireless communication terminals registered in the station. When the wireless communication terminal that has received the protocol type determines that the protocol matches its own protocol, it notifies the wireless base station of this by sending a link channel establishment request, establishes a wireless link, and performs data communication based on the protocol type. I do.

As described above, the protocol type is transmitted to the wireless communication terminal using the unused area at the time of the simultaneous incoming call in the incoming call message.

(Second Embodiment) In the first embodiment,
As a reserved area in the incoming message at the time of simultaneous incoming call,
A 48-bit area of octets 1 to 7 was used. The embodiment of the subject 2 of the present invention employs other realizing means, which will be described below.

The telephone number of the PHS is generally 11 digits (for example, 070-1111-2222). In the incoming message format shown in FIG.
The area of S number (the twelfth digit), PS number (the thirteenth digit) / extended call service type is unused. Therefore, even if the protocol type is transmitted using this area, the same effect as in the first embodiment is obtained.

FIG. 8 is a diagram showing an incoming message format according to the second embodiment.

In the second embodiment, transmission is usually performed by an incoming call message at the time of an incoming call, and this format is shown in FIG.

Next, the operation of the second embodiment will be described with reference to FIG.
This will be described along the flowchart shown in FIG.

When the operator of the wireless communication terminal 103 performs a predetermined operation for calling a data communication to the wireless communication terminal 106 via the key operation unit 12 (ST1), the information processing unit 10 The contents of the operation are analyzed and the wireless communication terminal 1 is analyzed.
06, the wireless protocol storage unit 9 notifies the wireless protocol storage unit 9 to start data communication. Upon receiving the notification, the wireless protocol storage unit 9 issues a data communication call request to the wireless base station 102a (ST2). ). Specifically, a predetermined message is transmitted to the base station. At this time, similarly to the first embodiment, the type of the protocol used for the data communication in the PIAFS is stored in the message and transmitted to the base station.

Here, "00000001": a data transmission protocol (fixed speed) is transmitted according to the table of FIG.

Next, the called-side radio base station 102b creates an incoming call message to be transmitted to the radio communication terminal.

In this case, in the incoming message format shown in FIG.
"0" (representing a call service using a PS number of a domestic number having 13 digits or less of BCD). Then, the protocol type “00000000” received from the wireless communication terminal earlier
"1" is mapped to octet 7, which is an unused area, and an incoming call message is created (ST3).

The message format in this case is shown in FIG.

Then, the wireless base station 102b sends the created incoming call message to the wireless communication terminal 106 (S
T4).

Radio communication terminal 1 that has received an incoming call message
06 refers to the value of octet 7 in the received incoming message (ST5). If it is not the filler (all 0), since the transmission is of the protocol type, the link channel is not immediately established as an incoming response, and it is determined whether or not the transmission has the protocol specified by the protocol type (ST6). If the determination is OK, subsequent data communication is possible, and a response is returned to the wireless base station. At the same time, the protocol type is extracted from the area in the message and temporarily stored in the protocol type storage unit 15 (ST7).

If the determination is NG, the wireless communication terminal 106
Does not respond and continues normal standby operation (ST10). Then, the wireless base station 102b continues to wait for a response from the wireless communication terminal 106, and after a predetermined time has elapsed, returns a notification indicating that there is no available terminal to the calling side. Calling wireless communication terminal 103
Informs the user of this to the effect of the bi-moon.

As a specific response to the radio base station 102b, a link channel establishment request message is transmitted. In response to this, the radio base station 102b returns a link channel assignment message. The wireless communication terminal 106 that has received the link channel assignment message shifts to a service channel establishment phase and enters a communication state (a wireless link is established) (ST8).

The wireless communication terminal 106 with which the wireless link has been established
Starts the PIAFS protocol. At this time, the protocol type temporarily stored is read out with reference to the protocol type storage unit.

Here, the content displayed in the first priority protocol type P1 is "00000001" as shown in FIG. 10, so that the data transmission protocol (fixed speed) is selected and the PIAFS protocol is selected. The storage unit 14 is notified. As a result, data communication using the data transmission protocol (fixed speed) is executed (ST
9).

As described above, upon receiving a call request for data communication specifying the destination wireless communication terminal from the calling wireless communication terminal, the wireless base station transmits the protocol type to the wireless communication terminal. I do. If the receiving wireless communication terminal that has received the protocol type determines that the protocol matches its own protocol, it sends a link channel establishment request to notify the wireless base station of the fact, establishes a wireless link, and sets the protocol type. Based on this, data communication is performed.

As described above, the protocol type is transmitted to the wireless communication terminal using the unused area of the PS number in the incoming message.

(Third Embodiment) The above embodiment is an example in which the wireless medium is PHS and the data communication protocol is PIAFS, but the above embodiment is applied to other wireless media and data communication systems. In this case, the same effect as in the above embodiment can be obtained.

[0065]

According to the present invention, since a protocol negotiation procedure is not required at the time of data communication, the communication time is shortened, the throughput is improved, and therefore, a predetermined frequency (communication channel) which is a resource of the radio communication system is used. ) And the battery can be effectively used without wasting.

Further, according to the present invention, the protocol consistency can be known before shifting to the communication state (before answering the incoming call). If the communication is not possible, the mobile station returns to the standby operation, so that the predetermined frequency (communication channel) and battery, which are resources of the wireless communication system, are not wasted, and
The effect that it can be used effectively is produced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a digital cordless telephone system 100 according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a wireless communication terminal 103 in the digital cordless telephone system 100 according to the embodiment.

FIG. 3 is a flowchart showing the operation of the embodiment.

FIG. 4 is a diagram showing contents of an incoming call message in the embodiment.

FIG. 5 is a diagram showing an example of an incoming message format at the time of simultaneous incoming call in the embodiment.

FIG. 6 is a diagram illustrating an example of an incoming call message format at the time of transmitting a protocol type in the embodiment.

FIG. 7 is a diagram showing an example of an incoming call message format in the embodiment.

FIG. 8 is a diagram showing an incoming message format in the second embodiment.

FIG. 9 is a diagram showing a frame structure in conventional in-band negotiation.

FIG. 10 is a diagram showing an example of contents displayed in a conventional first priority protocol type P1.

[Explanation of symbols]

 100: Digital cordless telephone system, 101a, 101b: Communication line, 102a, 102b: Wireless base station, 103 to 106: Wireless communication terminal, 107: Network, 108: Network control unit.

Claims (6)

[Claims] 1. A wireless communication system comprising a wireless base station and a wireless terminal connected to a communication line, having a plurality of supported protocols, and performing a simultaneous incoming call to the wireless base station and the wireless terminal. In the wireless communication system for transmitting the incoming call message, when the base station transmits the incoming call message indicating the simultaneous incoming call, the protocol type of the wireless communication system is mapped in the incoming call message. Wireless communication system. 2. The wireless communication system according to claim 1, wherein the protocol type is mapped to a reservation area of an incoming call message at the time of the simultaneous incoming call. 3. The wireless communication system according to claim 1, wherein the protocol type is mapped to an unused area of a PS number of an incoming call message. 4. The wireless communication method according to claim 1, wherein a protocol type is collectively transmitted to all wireless communication terminals registered in the wireless base station by the simultaneous call receiving operation. Communications system. 5. The wireless communication system according to claim 1, wherein the wireless communication system is a PHS that performs wireless communication conforming to RCR-STD28. 6. The wireless communication system according to claim 1, wherein the protocol type is a PIAFS protocol.