JP3059845B2 - Relay device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile station and a base station used in a so-called second-generation cordless telephone system which enables communication with a plurality of telephones by radio communication separately from a general public telephone line. It relates to a relay device with a station.

[0002]

2. Description of the Related Art The second generation cordless telephone system is an extension of the cordless telephone system, and has a common interface to enable communication with a plurality of connection devices (base stations). Therefore, by carrying a personal terminal device (PHP, that is, also called a personal handy phone) as well as at home or in a business place, a PSTN (Public Telecommunication Network) or ISDN (Integrated Services Digital Communication Network)
It is possible to communicate "anytime, anywhere, with anyone" via a base station connected to the.

[0003] Such personal terminal devices (which are mobile stations; hereinafter, referred to as PSs; Personal Stations) are premised on being carried in a pocket or the like. In terms of time and the like, the transmission power is inevitably low. For this reason,
A personal terminal device is a base station (hereinafter, CS; Cell Sit).
e) can only be used within a certain range.

FIG. 8 is an explanatory diagram showing a configuration example of a cordless telephone system using a control device for controlling a plurality of base stations. In this example, the communication area over a wide area is divided into a plurality of (in this case, three zones), and each zone is provided with a large number (in this case, 18) of CSs (relay connection devices). Are controlled by a single controller connected by wire, and each PS (mobile station) can communicate with another telephone via a communicable CS. Therefore, P
By moving, S can communicate over a wide range via the CS of the destination.

[0005] As for the communication procedure in such a cordless telephone system, a standard (hereinafter referred to as RCR-STD) is defined by RCR (Radio System Development Center).

[0006]

However, according to the cordless telephone system described above, since a plurality of CSs are connected to the control device by wire, the installation locations are limited. For this reason, the use range of the PS is naturally limited. The present invention has been made in view of the above situation, and has as its object to provide a relay device capable of effectively expanding the communicable area of a mobile station.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a base station-side communication control system which is connected by radio to a base station connected to a telephone line and controls communication between the base station and the base station. And a mobile station-side communication control means connected to the mobile station by radio and controlling communication with the mobile station, wherein the base station-side communication control means
A first connector connected to a signal line in the mobile station device
And the mobile station-side communication control means includes
Connected to the signal line in the base station device with respect to the base station device
It is constructed by adding a second connector, the first connector
By performing the transmission of predetermined data required for relay between the motor and the second connector is characterized in that relays communication between the mobile station and the base station.

[0008]

According to the above arrangement, the communication between the base station and the relay device is controlled by the base station-side control means in the relay device. Further, communication between the mobile station and the relay device is controlled by the mobile station side control means. Then, by transmitting predetermined data necessary for relaying between the base station side communication control means and the mobile station side communication control means, communication is relayed between the base station and the mobile station.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of a relay device according to the present invention. This relay device is composed of two control units, a CS unit for controlling connection with a PS (mobile station) and a PS unit for controlling connection with a CS (base station). , 7. The PS section is a standard PS that satisfies RCR-STD.
This is a device in which a data switching block 1, a connector connection detection block 2, and a connector 3 are added to the configuration. The CS unit is a device in which a data synchronization circuit 5, a connector connection detection block 6, and a connector 7 are added to a standard CS configuration. It is.
Then, each of the CPUs 4 and 8 in the PS unit and the CS unit,
The other blocks are controlled so that the unit and the CS unit operate as PS and CS, respectively, and the other blocks are controlled so that control information and voice data can be exchanged between the PS unit and the CS unit. Note that the configuration of each of the standard PS and CS units is not directly related to the present invention, and a description thereof will be omitted.

Next, the operation of the relay device when the connectors 3 and 7 are not connected will be described. The operation of the PS unit is as follows. The CPU 4 has a standard P
Each block is controlled to operate as S. In this case, the connector connection detection circuit 2 detects whether the CS unit and the PS unit are connected, and detects that they are not connected. At this time, the data switching block 1 connects the layer 1 processing block to the ADPCM block, and the connector 3 is not connected to any block. Here, the layer 1 processing manages electrical, mechanical, and physical conditions in order to use a telephone line as a communication line,
This is a process for guaranteeing transmission of the bit string. The PS section has a unique PS number (for example, PN1).
And an incoming call is made to PN1. Further, regarding the operation of the CS unit, when the connectors 3 and 7 are not connected, the CS does not operate and the connector connection detection block 6 does not operate.
Only monitor.

On the other hand, the operation of the present relay device when the connectors 3 and 7 are connected is as follows. The PS unit and the CS unit are connected by connectors 3 and 7 (detected by a connector connection detection circuit), and integrally operate as a relay device. At this time, the data switching block 1 connects the layer 1 processing block to the connector 3,
Separate the M block from the layer 1 processing block. In this state, the PS unit and the CS unit can exchange data, and relay between the PS and the CS is performed.

FIG. 2 is an explanatory diagram showing a configuration example of a cordless telephone system using the relay device according to the present invention. The CS connected to the telephone line is CS1 (the CS number is CN1), the PS number of the PS unit in this relay device is PN1, the CS number of the CS unit is CN2, and the PS connected to the CS unit by the radio interface is PS2. (PS2 is PN2).

Here, the signal lines connected by the connectors 3 and 7 include an audio data transmission / reception bus line, a data clock line, a CPU connection bus line, a connector connection detection data line, and the like. When the connectors 3 and 7 are connected, the CPU 8 and the PS
The CS unit and the PS unit are integrally controlled so that the CPU 4 in the unit is connected and exchanges information such as outgoing and incoming calls.

FIGS. 3, 4, 5 and 6 respectively show transmission from PS2, reception to PS2, disconnection of the CS1 side radio channel, and disconnection of the PS2 side radio channel shown in FIG. FIG. 5 is an explanatory diagram showing a typical sequence. FIG.
In the case where a call is made from PS2, the CS unit
When a link channel establishment request is received from, a link channel establishment request is instructed to the PS unit, and a link channel is allocated to PS2. The PS unit having received the link channel establishment request instruction issues a link channel establishment request to CS1. Thereafter, between the PS2 and the CS unit and between the PS unit and the CS1, call control, radio management, and mobility management are performed according to the procedure specified by the RCR-STD, and the CS1, the PS unit, and the C
When the S unit and the PS2 enter the communication state, the DT (dial tone) transmitted from the CS1 is transmitted to the PS2.

Next, when the CS unit receives the additional information from PS2, it transmits the contents to the PS unit. The PS unit transmits the additional information received from the CS unit to CS1. Then, when the PS unit receives the call setting reception and the call from CS1, the CS unit transmits the call setting reception and the call to PS2. After that, CS1
RBT (Ringback Tone) from CS to PS2, CS1
After receiving a response from, the user enters communication.

The layer 1 processing block of the PS unit and C
Transmission and reception of voice data such as DT, RBT, and voice during a call between the layer 1 processing blocks of the S unit are performed while synchronizing with the data synchronization circuit of the CS unit. The layer 1 processing block of the PS unit converts the data received from CS1 to CS
To the layer 1 processing block of the CS unit, and
The data received from the processing block is transmitted to CS1.
The layer 1 processing block of the CS unit transmits the data received from PS2 to the layer 1 processing block of the PS unit,
The data received from the layer 1 processing block of the
Send to

In the case of an incoming call, a PS whose PS number is PN1
And a mobile station that is PN2. In the case of an incoming call to PN1, the PS unit is operated as a standard PS. Also, in the case of an incoming call to PN2, as shown in FIG. 4, when receiving a call from CS1, the PS unit instructs the CS unit to call the PS2 and issues a link channel establishment request to CS1. put out. After that, the control between CS1 and PS unit and between PS2 and CS unit are described in RCR-STD.
The sequence proceeds until the MM authentication response according to the procedure specified in. When the CS unit receives a call from PS2,
A call is instructed to the unit, and the following sequence is advanced to start communication. Further, the PS unit, having received the call from the CS unit, transmits the call to CS1, advances the subsequent sequence, and enters the communication.

Then, CS1 and PS unit and CS unit and PS unit
When both of them enter the communication state, the layer 1 of the PS unit
Transmission / reception of audio data is started between the processing block and the layer 1 processing block of the CS unit. The transfer of the audio data is performed while synchronizing with the data synchronization circuit 5 in the CS unit. Also, the layer 1 processing block of the PS unit is:
The data received from CS1 is transmitted to the layer 1 processing block of the CS unit, and the data received from the layer 1 processing block of the CS unit is transmitted to CS1. The layer 1 processing block of the CS unit transmits data received from PS2 to the layer 1 processing block of the PS unit, and transmits data received from the layer 1 processing block of the PS unit to PS2.

In FIG. 5, when disconnecting the radio channel on the CS1 side, upon receiving a disconnection request from PS2, the CS unit instructs the PS unit to disconnect, and then proceeds with the subsequent sequence according to RCR-STD. Then, the PS unit having received the disconnection instruction disconnects the wireless channel with CS1 according to the RCR-STD. In FIG. 6, when disconnecting the wireless channel on the PS2 side, the PS unit, upon receiving a disconnection request from CS1, instructs the CS unit to disconnect, and then issues an RC
The subsequent sequence proceeds according to the R-STD. And
Upon receiving the disconnection instruction, the CS unit follows PS according to RCR-STD.
2 is disconnected from the wireless channel.

FIG. 7 is a flowchart showing a control procedure of the relay device according to the present invention. This flowchart summarizes each control sequence shown in FIGS. 3 to 6 as an operation procedure of the relay device, and all control operations are controlled by the CPU 4 and the CPU 8 shown in FIG. First, a determination is made as to whether the call is incoming or outgoing. Here, as the judgment, PS from PS
It is determined whether there is an incoming call to the unit (S1). If there is an incoming call (Yes in S1), the incoming call processing of S21 to S26 is performed, and if there is no incoming call (No in S1), the outgoing call of S2 to S12 is made. Processing is performed.

The calling process is as follows. That is, when there is no incoming call and there is a link channel establishment request from the PS 2 to the CS unit (in the case of Yes in S2), the call setup is performed between the PS 2 and the CS unit and between the PS unit and the CS 1. , Wireless management and mobility management are performed (S3). Subsequently, DT is sent from the CS1 to the PS unit.
If (dial tone) has been transmitted (Yes in S4), voice data (DT) is relayed between CS1 and PS2 (S5).

Further, when additional information is transmitted from the PS2 to the CS unit (Yes in S6), the additional information is transmitted from the PS unit to the CS1, and
Call setting and calling are performed between S1 and the PS unit and between the CS unit and PS2 (S7). So, CS
Voice data (RBT; ringback tone) is relayed between 1 and PS2 (S8). Furthermore, from CS1, P
When there is a response to the S part (in the case of Yes in S9), communication is enabled, and transmission and reception of audio data are performed (S10).

Thereafter, when the disconnection request is issued from the PS2 to the CS unit (Yes in S11), the process of disconnecting the radio channel between the CS1 and the PS unit is performed (S12). Next, the incoming call processing will be described. In step S1, when a call is received from the CS1 to the PS unit, the call is transmitted between the PS2 and the CS unit and between the PS unit and the
The respective processes of call setup, wireless management, and mobility management are performed between S1 and S1 (S21). Subsequently, when there is a call from the PS2 to the CS unit (Yes in S22),
Calling, answering, and response confirmation processes are performed between the PS2 and the CS unit and between the PS unit and the CS1 (S23), and a communication is enabled to transmit and receive voice data (S2).
4).

Thereafter, when the disconnection request is issued from the CS1 to the PS unit (Yes in S25), a disconnection process of the wireless channel between the PS2 and the CS unit is performed (S26). As described above, in the relay device of this embodiment, the CS unit responds to the mobile station (PS2), and the PS unit responds to the base station (CS1).
Since S2 and CS1 are connected wirelessly and smoothly, the communicable area of PS2 with low power is effectively expanded.

[0025]

According to the present invention described above, it is possible to easily relay wirelessly between a base station and a mobile station within a range satisfying RCR-STD, which is a communication standard for digital cordless telephones. . Further, since such a relay device can be installed over a wide range with respect to the base station, the communicable area of the mobile station can be effectively expanded, and the usability is greatly improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a relay device according to the present invention.

FIG. 2 is an explanatory diagram showing a configuration example of a cordless telephone system using a relay device according to the present invention.

FIG. 3 is an explanatory diagram showing a sequence for controlling transmission from PS2 shown in FIG. 2;

FIG. 4 is an explanatory diagram showing a sequence for controlling an incoming call to PS2 shown in FIG. 2;

5 is an explanatory diagram showing a sequence for controlling disconnection of the radio channel on the CS1 side shown in FIG. 2;

FIG. 6 is an explanatory diagram showing a sequence for controlling disconnection of a wireless channel on the PS2 side shown in FIG. 2;

FIG. 7 is a flowchart showing a control procedure of the relay device according to the present invention.

FIG. 8 is an explanatory diagram showing a configuration example of a cordless telephone system using a control device that controls a plurality of base stations.

[Explanation of symbols]

 1 Data switching block 2, 6 Connector connection detection block 3, 7 Connector 4, 8 CPU 5 Data tuning circuit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04B ^7/ 24-7/26 102 H04Q ^7/ 00-7/38

Claims (2)

(57) [Claims] 1. A base station-side communication control means, which is wirelessly connected to a base station connected to a telephone line and controls communication with the base station, is connected to a mobile station by radio, and Mobile station-side communication control means for controlling communication between mobile stations, wherein the base station-side communication control means
With the first connector connected to the signal line in the mobile station
Is constituted by pressurized, the mobile station-side communication control means, the base to the base station apparatus
With the second connector connected to the signal line in the base station equipment
And relaying communication between the base station and the mobile station by transmitting predetermined data required for relaying between the first connector and the second connector. Relay device. (2) The base station-side communication control means includes the relay device.
The mobile station can be attached to and detached from the
Operate as a device 2. The method according to claim 1, wherein
Relay device.