JPH11239382A - Portable terminal communications system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable reception and transfer of information even in the case that communication using a conventional service channel is not available by using a logic control channel to transfer information between a plurality of terminals and portable terminals. SOLUTION: A base station 2 or 3 uses a logic control channel and sends an incoming call message and informs a PHS 1 of the arrival of the incoming call. The PHS 1 sends a link channel setup request to the base stations 2, 3, which return a link channel assignment to the PHS 1. A service channel is used between the PHS 1 and the base stations 2, 3, a synchronization state is set up through the transmission and reception of a synchronization burst, service channel information such as incoming call acknowledgement and setup reception is exchanged to promote setup sequence of the service channel. When the setup processing of the service channel is not normally promoted and reception through the logic control channel is available, the incoming call information is sent from the base station to the PHS 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a portable terminal communication system, and more particularly to a portable terminal communication system using a logical control channel for information transfer between a PHS terminal and a base station.

[0002]

2. Description of the Related Art Recent portable telephones and simplified portable telephones (PHS: Personal Handyphone) are known.
System), the development of portable terminal devices has been remarkable. Currently, mobile phones (hereinafter referred to as P
There are a plurality of carriers as carriers of the HS), and a PHS registered with a certain carrier cannot connect to another base station even if the base station is nearby. It would be more convenient for PHS users if it could be connected to any of the base stations of multiple operators.

As an example of such a technique, Japanese Patent Application Laid-Open No.
A "portable terminal device" described in Japanese Patent No. 307961 is known.

[0004] In this publication, a control channel transmitted from a base station is received, synchronization with the control channel is established, the location is registered with the base station, and a standby state is established. A technique is described that includes a carrier selection unit that selects any one of them and a reception control unit that controls to receive a control channel transmitted from a base station of the selected carrier.

[0005]

In the conventional portable terminal communication system described above, it is sometimes difficult to receive a signal even in a call area due to the radio wave condition, and communication using a normal service channel becomes impossible. Has disadvantages.

An object of the present invention is to provide a portable terminal communication system capable of receiving and transferring information even when communication using a normal service channel is impossible.

[0007]

A portable terminal communication system according to the present invention is characterized in that information transfer between a plurality of base stations and a portable terminal device is performed using a logical control channel.

[0008] A portable terminal device, a plurality of base stations, and a base station control device for controlling communication of the plurality of base stations are provided. It is characterized by using a control channel.

Using the logical control channel, sending an incoming message to the portable terminal device and establishing a first line,
When the second channel is not established by using the service channel, incoming information is transmitted from the base station to the portable terminal device using the established logical control channel.

[0010] The second using the service channel
When the line establishment is not performed at the time of the authentication request and authentication response processing of the portable terminal device, incoming information is transmitted from the base station to the portable terminal device through the logical control channel.

[0011] The logical control channel is characterized by comprising data in which a user packet channel USCCH is arranged.

Further, the portable terminal device is used as a radio wave transmission source, and is incorporated in an automatic position detection system for automatically detecting a position of a person carrying the portable terminal device.

[0013]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of a portable terminal communication system according to the present invention.

In the present embodiment shown in FIG. 1, a PHS 1 which is a portable terminal device, a base station 2 and a base station 3 which transmit and receive information to and from the PHS 1, and a base which performs management control of these base stations And a station concentrator control device 4.

FIG. 2 is an explanatory diagram showing a communication procedure leading to a telephone call when a PHS call arrives.

Next, the operation of this embodiment will be described in more detail with reference to FIGS.

The channels used for the radio section interface between the PHS 1, the base station 2, and the base station 3 are logically the following three logical channels depending on the purpose of use: 1) a logical control channel, 2) a link channel, and 3) a service channel.
are categorized.

In a PHS system as shown in FIG.
By using the logical control channel 5 as a means for notifying information from the HS 1 to the base stations 2 and 3 or from the base stations 2 and 3 to the PHS 1, even when communication using the normal service channel 6 is impossible, an incoming call is received. It becomes possible to notify information such as information.

Here, in order to clearly distinguish the logical control channel from the other logical channels, the link channel and the service channel will not be distinguished from each other but will be collectively described as a service channel.

FIG. 2 shows a communication procedure up to a call when an incoming call is made to the PHS 1. When the power of the PHS 1 is turned on, a line connection is established with the base stations 2 and 3 through the logical control channel 5.

The base station 2 or 3 uses the logical control channel 5 to send an incoming call 7 as an incoming message to the PHS 1 to notify the PHS 1 of the incoming call. The PHS1 sends a link channel establishment request 8 to the base stations 2 and 3, and the base stations 2 and 3 return a link channel assignment 9 to the PHS1. Then PH
First, a synchronous state is established by transmitting a synchronous burst 10 and receiving a synchronous burst 11 between the S1 and the base stations 2 and 3 using the service channel 6, and the incoming call response, call setting, call setting reception, etc. The service channel information is exchanged, and the establishment sequence of the service channel 6 is advanced based on the information.

Unless the processing of "authentication request 12" and "authentication response 13" in the procedure for establishing the service channel 6 is performed normally, a call cannot be made. In addition, since the incoming call is not established, there is no ringing sound of PHS1 and PHS1
User cannot know that there is an incoming call.

As described above, the establishment sequence of the service channel 6 is complicated, is easily affected by the state of the radio wave, and even if the incoming call can be notified using the logical control channel 5, the call may not be reached.

Even when a call cannot be established due to the state of radio waves, when the incoming call can be notified by the logical control channel 5, the incoming call information 14, 15 is transmitted from the base stations 2, 3 to notify the caller number 16. If possible, it would be convenient for the user to be able to know who received the call.

FIG. 3 is an explanatory diagram showing a service channel establishment communication procedure.

Referring to FIG. 3, even when the establishment of the service channel 6 does not proceed normally, as in the case where the synchronization burst 10, which is one of the establishment sequences of the service channel 6, does not reach the other party, the logical control channel 5 can be received, incoming information 14 and 15 are transmitted from base stations 2 and 3 to P
It becomes possible to transmit to HS1.

That is, by using the logical control channel 5, the PHS 1 sends an incoming call 7 as an incoming message to notify the incoming call, and the PHS 1 sends a link channel establishment request 8 to the base stations 2, 3, and the base stations 2, 3 Is completed up to the sequence of returning the link channel assignment 9 to the PHS1.

Here, even when the synchronous burst 10 does not reach the base stations 2 and 3 and the synchronous burst 11 does not reach from the base stations 2 and 3, even when the establishment processing of the service channel 6 does not normally proceed, If the reception is possible by the logical control channel 5, the incoming information 14 and the incoming information 15 can be transmitted from the base stations 2 and 3 to the PHS1.

The PHS communication standard RCR STD-
28, several types are defined as logical control channels. In this case, the user packet channel U
An example in which the SCCH function is used will be described.

In this case, notifying the PHS 1 of the caller number 16 as the incoming information when the call cannot be made is defined as “out-of-communication-area incoming call notification”. , A message called incoming information 15 is used.

FIG. 4 is a diagram showing the format of the USCCH.

Referring to FIG. 4, the USCCH has a data format of 8 bits and 5 octets, and includes a reservation status, a message identification, and message data. One element constituting the logical control channel is the USCCH.

FIG. 5 is a diagram showing an example of an encrypted format.

As shown in FIG. 5, the caller ID 16 uses a total of 52 bits, 26 bits each of octets 2 to 5 of the incoming call information 14 and incoming call information 15, and encrypts and transmits the caller ID 16 so as not to leak. I do.

FIG. 6 is an explanatory diagram showing a communication procedure when notifying the caller number.

As in FIG. 3, by using the logical control channel 5, the PHS 1 sends an incoming call 7 as an incoming message to notify the incoming call, and the PHS 1 sends a link channel establishment request 8 to the base stations 2 and 3, It is assumed that the stations 2 and 3 have completed the sequence of returning the link channel assignment 9 to the PHS1.

Here, as in the case where the synchronization burst 10 does not reach the base stations 2 and 3 and the synchronization burst 11 does not reach from the base stations 2 and 3, the service channel 6 is not normally established, and When there is no response from the PHS 1 and there is a possibility that the caller number can be notified to the PHS 1 by “out-of-communication-area incoming call notification” using the logical control channel 5, the base stations 2 and 3 transmit the incoming call information 14 and the incoming call information 15. To the PHS 1 to notify the caller number 16.

The "out-of-call area incoming call notification" is transmitted to the base station 2,
3 to the PHS1, the incoming information 14 and the incoming information 15 are set to 1 in consideration of the loss of the signal.
Are transmitted three times as one set of information.

The PHS 1 having received the incoming call information 14 and the incoming call information 15 notifies the incoming call with a ring tone different from the normal incoming call and displays the caller number 16 from the incoming call information 14 and the incoming call information 15. When the reception information 14 and the reception information 15 are incompletely received, the caller number 16 is not displayed, and the user is notified only of the "out of communication area".

Due to the nature of the PHS1, there is a problem that it is difficult to receive a call due to the state of the radio wave even in the communication area. P
The antenna mark indicating the inside of the communication area displayed on the HS 1 indicates that one of the logical control channels 5 is normally received from the base stations 2 and 3 and is displayed even if the establishment of the service channel 6 fails. If there is, the logical control channel 5 can be received.

As described above, even if the establishment of the service channel 6 fails, the use of the logical control channel 5 used to enter the establishment sequence of the service channel 6 limits the information amount, PHS1 can be notified of effective information such as user number 16 to the user.
It is more likely that you will be notified of incoming calls.

The base station concentrator 4 controls the above-described operations of the base stations 2 and 3.

As an application example, since the information can be notified by using the radio wave reachable area to the maximum by using the logical control channel 5, the PHS1 is used as a radio wave transmitter, and the PHS1 position automatic detection system is used. It can be applied to such applications.

There is a tendency for children to be abducted frequently, and application to terminals having both an automatic emergency call function and a radio wave transmission function is also conceivable.

[0046]

As described above, the portable terminal communication system of the present invention uses the logical control channel used to enter the service channel establishment sequence even when the communication fails when the service channel is established. Therefore, it is possible to notify the PHS terminal of effective information such as a caller ID to the user, and to increase the possibility of notifying the PHS terminal of the incoming call.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a mobile terminal communication system according to the present invention.

FIG. 2 is an explanatory diagram showing a communication procedure leading to a call when a PHS call arrives.

FIG. 3 is an explanatory diagram showing a service channel establishment communication procedure.

FIG. 4 is a diagram showing a format of USCCH.

FIG. 5 is a diagram showing an example of an encrypted format.

FIG. 6 is an explanatory diagram showing a communication procedure when notifying a caller number;

[Explanation of symbols]

 Reference Signs List 1 PHS 2 Base station 3 Base station 4 Base station concentrator 5 Logical control channel 6 Service channel 7 Incoming call 8 Link channel establishment request 9 Link channel allocation 10 Synchronous burst 11 Synchronous burst 12 Authentication request 13 Authentication response 14 Incoming information 15 Incoming information Information 16 Caller ID

Claims (6)

[Claims] 1. A portable terminal communication system wherein information transfer between a plurality of base stations and a portable terminal device is performed using a logical control channel. 2. A portable terminal device, a plurality of base stations, and a base station control device for controlling and controlling communication between the plurality of base stations, wherein communication between the portable terminal device and the plurality of base stations is performed. , Using a logical control channel. 3. When the second line is not established by use of a service channel after the first line is established by transmitting an incoming message to the portable terminal device using the logical control channel and the logical channel is established, The mobile terminal communication system according to claim 2, wherein incoming information is transmitted from the base station to the mobile terminal device through a control channel. 4. When the second line establishment by use of the service channel is not performed during an authentication request and an authentication response process of the mobile terminal device, an incoming call from the base station to the mobile terminal device by the logical control channel. 4. The mobile terminal communication method according to claim 3, wherein information is transmitted. 5. The mobile terminal communication system according to claim 1, wherein the logical control channel is constituted by data in which a user packet channel USCCH is arranged. 6. The mobile terminal device according to claim 1, wherein said mobile terminal device is used as a radio wave transmission source and is incorporated in an automatic position detection system for automatically detecting a position of a person carrying said mobile terminal device. 3. The mobile terminal communication method according to 3, 4, or 5.