CN104918220A

CN104918220A - System for realizing interconnection and intercommunication between digital trunking communication systems based on air interfaces

Info

Publication number: CN104918220A
Application number: CN201510285764.4A
Authority: CN
Inventors: 张宗军; 钱小军; 肖亮; 杨冕; 陈池
Original assignee: Eastern Communication Co Ltd
Current assignee: China Electronics Technology Eastern Communication Group Co.,Ltd.
Priority date: 2015-05-29
Filing date: 2015-05-29
Publication date: 2015-09-16
Anticipated expiration: 2035-05-29
Also published as: CN104918220B

Abstract

The invention relates to a system for realizing interconnection and intercommunication between digital trunking communication systems based on air interfaces. The system is characterized in that interconnection and intercommunication between a home-terminal system and an opposite-terminal system are realized via a bridging system. The bridging system is composed of a bridging center and one or multiple TETRA intelligent wireless gateways. Each TETRA intelligent wireless gateway is composed of a controller and multiple TETRA transceivers. The TETRA intelligent wireless gateways are connected with the opposite-terminal system via the air interfaces. Each TETRA intelligent wireless gateway requires the opposite-terminal system to set a base station for forwarding. The bridging center and the TETRA intelligent wireless gateways are matched in completion of business intercommunication between users in the home-terminal system and individual users and group users in the opposite-terminal system. Intercommunication between two different digital trunking systems is realized via existing standard air interfaces without opening the interfaces between the systems; and networking equipment is flexible and can be accessed to any base station of the opposite-terminal system without performing any operation on the opposite-terminal system.

Description

The system that interconnects between digital clustering communication system is realized based on air interface

Technical field

The present invention relates to a kind of system that interconnects realizing between digital clustering communication system based on air interface.

Background technology

Mobile communication system can be divided into public access mobile radio and dedicated mobile communications subsystem by its character of use.Trunked communication system belongs to dedicated mobile communications subsystem, and it is a kind of shared resource, contribution, shared channel equipment and the multipurpose of service, dynamical wireless dispatching communication system.

In network topology structure, trunked communication system has the formation similar with public access mobile radio: terminal is by air interface and base station communication; Each base station is all connected to a switching control center be made up of different sub-systems such as function of exchange, management function, scheduling features; The prior network planning determines geographical addressing and the running parameter of each base station, thus is built into the region overlay of cellular cell.

TETRA standard definition air interface communication agreement, the i.e. consensus standard that communicates with terminal room of base station, in actual use, the terminal of different manufacturers and base station substantially can be compatible.

TETRA standard also defines intersystem interface intercommunication, the agreement namely between different manufacturers switching center.But on actual market, in order to protect the domain of oneself, stop rival factory to enter, the producer be introduced into often is reluctant that debugging of interconnecting is carried out in cooperation, therefore will realize being still a difficult problem across interconnecting of producer.

Existing intercommunication mode is by a digital ride access peer-to-peer system, realizes the intercommunication of group calling by back-to-back mode.

Trunking communication can not develop as Cellular Networks, although there is a lot of external factor, himself technical development also exists bottleneck, and wherein the most serious is exactly the problem of interconnecting.Comprising the intercommunication between different system, the intercommunication between base station and switching center, even the intercommunication of consolidated network different terminals is all problem.

Between system, intercommunication mode is mainly embedded into peer-to-peer system by digital ride and realizes intercommunication in the market.The intercommunication mode embedding digital ride can only realize group calling, and a ride can only support a road calling simultaneously.But the demand of user often not only comprises group calling, also comprises individual calling, the interworking services such as short data.Obviously be difficult to meet growing intercommunication demand by existing mode.

Summary of the invention

For problems of the prior art, the object of the present invention is to provide a kind of technical scheme realizing the system that interconnects between digital clustering communication system based on air interface.

The described system that interconnects realizing between digital clustering communication system based on air interface, it is characterized in that comprising bridge system, interconnecting of this end system and peer-to-peer system is realized by bridge system, bridge system is by bridge joint center, one or more TETRA intelligent radio gateway composition, the TETRA intelligent radio gateway of each intercommunication group is selected by network management configuration or load dynamic allocation scheme in bridge joint center, and adhered to by the group that the TETRA intelligent radio gateway selected initiates intercommunication group to peer-to-peer system, intercommunication group is adhered to the form of current group, to guarantee that peer-to-peer system can send the call signaling of intercommunication group to TETRA intelligent radio gateway when there being the calling of intercommunication group, TETRA intelligent radio gateway is made up of controller and multiple TETRA transceiver, and TETRA intelligent radio gateway is connected by air interface with peer-to-peer system, and each TETRA intelligent radio gateway requires that peer-to-peer system arranges a base station for forwarding, bridge joint center and TETRA intelligent radio gateway coordinate this end system, and the individual user completing user and peer-to-peer system in this end system, the intercommunication process of business function organizing user, business function mainly comprises individual calling, group calling and short data.

The described system that interconnects realizing between digital clustering communication system based on air interface, it is characterized in that the TETRA transceiver number of described TETRA transceiver number and peer-to-peer system repeating base station is consistent, the upstream frequency of the TETRA transceiver of each TETRA intelligent radio gateway is set to the downstream frequency of peer-to-peer system repeating base station TETRA transceiver, and the downstream frequency of the TETRA transceiver of each TETRA intelligent radio gateway is set to the upstream frequency of peer-to-peer system repeating base station TETRA transceiver.

Described a kind of utilization carries out based on the air interface system of interconnecting realized between digital clustering communication system the method that interconnects described in claim 1, it is characterized in that the method interconnected is as follows:

(1) group calling intercommunication

Step one, the group that this end system and peer-to-peer system need intercommunication is set on webmaster;

Step 2, bridge joint center select the TETRA intelligent radio gateway of each intercommunication group by network management configuration or load dynamic allocation scheme, and adhered to by the group that the TETRA intelligent radio gateway selected initiates intercommunication group to peer-to-peer system repeating base station, intercommunication group is adhered to the form of current group, to guarantee that peer-to-peer system can send the call signaling of intercommunication group to TETRA intelligent radio gateway when there being the calling of intercommunication group;

Step 3, TG1 is established to be one of them intercommunication group;

When there being TG1 group calling in this end system, bridge joint center can receive TG1 calling, and TG1 is called through TETRA intelligent radio gateway to peer-to-peer system repeating base station initiation TG1 calling, after the success of peer-to-peer system call setup, repeating base station can distribute a Traffic Channel, TETRA intelligent radio gateway is according to the channel allocation information in the peer-to-peer system call set up signaling received, also channel being switched to opposite end repeating base station is that the Traffic Channel of the identical time slot of Traffic Channel same frequency that TG1 distributes gets on, and both sides calling is docked successfully;

When peer-to-peer system has TG1 group calling, because TETRA intelligent radio gateway carries out group attachment to peer-to-peer system, therefore peer-to-peer system repeating base station has call signaling and is sent to TETRA intelligent radio gateway, and TETRA intelligent radio gateway initiates TG1 group calling through bridge joint center to this end system; TETRA intelligent radio gateway is simultaneously according to the channel allocation information received in peer-to-peer system call signaling, and it is that the Traffic Channel of the identical time slot of Traffic Channel same frequency that TG1 distributes gets on that channel of eating dishes without rice or wine is switched to peer-to-peer system repeating base station; After local terminal system calling is successfully established, the calling on both sides is just docked successfully;

After step 4, this end system and peer-to-peer system calling docking is got up, both sides can in the enterprising words that work of respective Traffic Channel;

(2) individual calling intercommunication

Step one, when intercommunication user is registered to this end system, by receiving local terminal systems exchange center notice, bridge joint center learns that this user enters in this end system, if this user is A, bridge joint center uses A number to select certain TETRA intelligent radio gateway to initiate registration to peer-to-peer system;

Step 2,

A-1, when local terminal system user calling peer-to-peer system user time, if called subscriber is unregistered at this end system, or local terminal system pages is called without response, local terminal systems exchange center is by Call Forwarding to bridge joint center, and bridge joint center makes a call to peer-to-peer system repeating base station by selecting the TETRA intelligent radio gateway of this intercommunication user registration;

A-2, when peer-to-peer system user calls out local terminal system user, due to intercommunication, user registers to peer-to-peer system, corresponding TETRA intelligent radio gateway can receive the call signaling of peer-to-peer system, and TETRA intelligent radio gateway makes a call to this end system through bridge joint center;

Step 3,

In a-1 situation, called connection sends call through signaling to afterwards TETRA intelligent radio gateway, TETRA intelligent radio gateway is according to the channel allocation information in the peer-to-peer system call through signaling received, Traffic Channel channel of eating dishes without rice or wine being switched to the identical time slot of peer-to-peer system same frequency gets on, and by call through signaling user under this end system is issued at bridge joint center, the calling on such both sides is docked successfully;

In a-2 situation, after called connection, this end system sends call through signaling to TETRA intelligent radio gateway, TETRA intelligent radio gateway sends call answering signaling to peer-to-peer system repeating base station, after peer-to-peer system call through, send call through signaling to TETRA intelligent radio gateway, TETRA intelligent radio gateway is according to the channel allocation information in the peer-to-peer system call through signaling received, Traffic Channel channel of eating dishes without rice or wine being switched to the identical time slot of peer-to-peer system same frequency gets on, and the calling on such both sides is just docked successfully;

(3) short data intercommunication

A) group address

Step 2, bridge joint center select the TETRA intelligent radio gateway of each intercommunication group by network management configuration or load dynamic allocation scheme, and adhered to by the group that the TETRA intelligent radio gateway selected initiates intercommunication group to peer-to-peer system, intercommunication group is adhered to the form of current group, to guarantee that peer-to-peer system can send to TETRA intelligent radio gateway when there being the short data of intercommunication group;

Step 3, TG1 is established to be intercommunication group

Under b-1, this end system, user sends TG1 group short data, and bridge joint center can receive TG1 short data, and is sent to peer-to-peer system repeating base station by TETRA intelligent radio gateway by TG1 short data, can send short data to TG1 group user after peer-to-peer system receives;

Under b-2, peer-to-peer system, user sends TG1 group short data, after TETRA intelligent radio gateway receives, initiates the group short data of TG1, can send short data to TG1 group user after this end system receives through bridge joint center to this end system;

Step 4,

In b-1 situation, peer-to-peer system can send short data simultaneously and be reported to corresponding TETRA intelligent radio gateway, and TETRA intelligent radio gateway is transmitted to bridge joint center, does not process after bridge joint center receives; Because be group short data, local terminal systems exchange center can issue short data and be reported to transmit leg, does not need the report waiting for coming in bridge joint center;

In b-2 situation, local terminal systems exchange center can send short data simultaneously and be reported to bridge joint center, does not process after bridge joint center receives; Because be group short data, peer-to-peer system switching center can issue short data and be reported to transmit leg, does not need the report waiting for coming in bridge joint center;

B) individual address

Step one, when intercommunication user is registered to this end system, by receiving local terminal systems exchange center notice, bridge joint center learns that this user is linked in this end system, this user is set to A, and bridge joint center uses A number to select a TETRA intelligent radio gateway to initiate registration to peer-to-peer system;

Step 2,

When c-1, this end system send short data to peer-to-peer system user, if recipient is unregistered at this end system, or local terminal system pages is called without response, local terminal systems exchange center is by short data forward to bridge joint center, and bridge joint center sends short data by selecting the TETRA intelligent radio gateway of this intercommunication user registration to peer-to-peer system repeating base station;

When c-2, peer-to-peer system user send short data to local terminal system user, due to intercommunication, user registers to peer-to-peer system, corresponding TETRA intelligent radio gateway can receive short data, and TETRA intelligent radio gateway sends short data through bridge joint center to this end system;

Step 3,

In c-1 situation, if short data requires to reply report and recipient has replied report, then the short data received report is issued TETRA intelligent radio gateway by peer-to-peer system switching center, and TETRA intelligent radio gateway is issued this end system through bridge joint center and issued the side of sending; If short data requires to reply report but recipient does not reply report, recipient does not receive or replys and reports unsuccessfully, then peer-to-peer system switching center sends failed short data after waiting for report time-out and is reported to TETRA intelligent radio gateway, and TETRA intelligent radio gateway is issued this end system through bridge joint center and issued the side of sending;

In c-2 situation, if short data requires that reply is reported and recipient has replied report, then after bridge joint center receives the report at local terminal systems exchange center, select corresponding TETRA intelligent radio gateway to send to peer-to-peer system and be reported to transmit leg; If short data needs to reply report but recipient does not reply report, recipient does not receive or replys and reports unsuccessfully, then send failed short data after local terminal systems exchange center waits report time-out and be reported to bridge joint center, bridge joint center selects corresponding TETRA intelligent radio gateway to issue peer-to-peer system transmit leg.

Because the intercommunication mode of embedding ride existing on market can only realize group calling, and a road calling can only be supported simultaneously, the present invention solves except group calling, user is to the demand of individual calling, short data intercommunication, and the present invention can support multiway calling simultaneously, calling way, only depend on peer-to-peer system channel resource number, greatly provide cost savings than existing intercommunication mode; When the interface of not open system, the intercommunication of more business can be realized as much as possible.

Accompanying drawing explanation

Fig. 1 is bridge system networking diagram;

Fig. 2 is that digital clustering communication system network is formed.

Embodiment

Below in conjunction with Figure of description, the invention will be further described:

The present invention is the implementation method of two different manufacturers digital cluster systems intercommunication, as shown in Figure 1, the system that interconnects between digital clustering communication system is realized based on air interface, comprise bridge system, interconnecting of this end system and peer-to-peer system is realized by bridge system, bridge system is by bridge joint center, one or more TETRA intelligent radio gateway composition, bridge joint center is by the TETRA intelligent radio gateway of each intercommunication group of policy selection such as network management configuration or load dynamic assignment, and adhered to by the group that the TETRA intelligent radio gateway selected initiates intercommunication group to peer-to-peer system, intercommunication group is adhered to the form of current group, to guarantee that peer-to-peer system can send the call signaling of intercommunication group to TETRA intelligent radio gateway when there being the calling of intercommunication group, TETRA intelligent radio gateway is made up of controller and multiple TETRA transceiver, and TETRA intelligent radio gateway is connected by air interface with peer-to-peer system, and each TETRA intelligent radio gateway requires that peer-to-peer system arranges a base station for forwarding, TETRA intelligent radio gateway can detect all information of peer-to-peer system respective base station, and as channel resource, whether channel takies, and these information reportings are upgraded its corresponding data to bridge joint center, bridge joint center and TETRA intelligent radio gateway coordinate this end system, and the individual user completing user and peer-to-peer system in this end system, the intercommunication process of business function organizing user, business function mainly comprises individual calling, group calling and short data etc.

The TETRA transceiver number of TETRA transceiver number and peer-to-peer system repeating base station is consistent, the upstream frequency of the TETRA transceiver of each TETRA intelligent radio gateway is set to the downstream frequency of peer-to-peer system repeating base station TETRA transceiver, and the downstream frequency of the TETRA transceiver of each TETRA intelligent radio gateway is set to the upstream frequency of peer-to-peer system repeating base station TETRA transceiver.TETRA intelligent radio gateway and bridge joint center adopt IP/E1 to be connected.

Utilize the method for carrying out interconnecting based on the air interface system of interconnecting realized between digital clustering communication system as follows:

(1) group calling intercommunication

Step 2, bridge joint center press the TETRA intelligent radio gateway of each intercommunication group of policy selection such as network management configuration or load dynamic assignment, and adhered to by the group that the TETRA intelligent radio gateway selected initiates intercommunication group to peer-to-peer system repeating base station, intercommunication group is adhered to the form of current group, to guarantee that peer-to-peer system can send the call signaling of intercommunication group to TETRA intelligent radio gateway when there being the calling of intercommunication group;

Step 3, TG1 is established to be one of them intercommunication group;

(2) individual calling intercommunication

Step 2,

Step 3,

(3) short data intercommunication

A) group address

Step 2, bridge joint center press the TETRA intelligent radio gateway of each intercommunication group of policy selection such as network management configuration or load dynamic assignment, and adhered to by the group that the TETRA intelligent radio gateway selected initiates intercommunication group to peer-to-peer system, intercommunication group is adhered to the form of current group, to guarantee that peer-to-peer system can send to TETRA intelligent radio gateway when there being the short data of intercommunication group;

Step 3, TG1 is established to be intercommunication group

Step 4,

B) individual address

Step 2,

Step 3,

The core of this kind of method is adopted to be that TETRA intelligent radio gateway user in this end system is registered in peer-to-peer system, namely TETRA intelligent radio gateway and contiguous peer-to-peer system repeating base station integrally seem the expansion as peer-to-peer system, complete the intercommunication of the business function of user and local terminal system user in peer-to-peer system thus.When TETRA intelligent radio gateway does not have a call business, user (individual user or group user) monitors signaling on a control channel, once call setup success, user has got on regard to the Traffic Channel being assigned to time slot identical with peer-to-peer system same frequency, thus achieves and support multiway calling simultaneously.Because the transceiver number of TETRA intelligent radio gateway transceiver number and opposite end repeating base station is consistent, thus calling maximum way only depend on peer-to-peer system channel resource number.

As shown in Figure 2, digital clustering communication system comprises terminal and system facility two parts, and terminal is the travelling carriage such as hand platform, ride mainly; System facility is made up of base station sub-system, switching subsystem, nms subsystem, scheduler subsystem, GIS scheduler subsystem etc., wherein switching subsystem, nms subsystem, scheduler subsystem, GIS scheduler subsystem concentrate on control centre, and the mode that base station then covers according to program and district is positioned at the different geographical of the whole area of coverage.Switching subsystem 111, nms subsystem 112, scheduler subsystem 113, GIS scheduler subsystem 114 etc. constitute control centre 110.Be connected by a wireline interface 122 between base station with control centre, travelling carriage 101 is communicated with base station sub-system 102 by air interface 121, thus access whole system.

This end system and peer-to-peer system intercommunication flow mainly comprise group calling, the foundation of individual calling, maintenance and release, and short data intercommunication etc., are described below respectively.

1. group calling is set up

Bridge joint center is by the TETRA intelligent radio gateway of each intercommunication group of policy selection such as network management configuration or load dynamic assignment, and adhered to by the group that the TETRA intelligent radio gateway selected initiates intercommunication group to peer-to-peer system, intercommunication group is adhered to the form of current group, to guarantee that peer-to-peer system can send the call signaling of intercommunication group to TETRA intelligent radio gateway when there being the calling of intercommunication group;

If TG1 is one of them intercommunication group, when peer-to-peer system has TG1 group calling, have call signaling and be sent to TETRA intelligent radio gateway, after TETRA intelligent radio gateway receives group calling, initiate TG1 group calling through bridge joint center to this end system;

When there being TG1 group calling in this end system, bridge joint center can receive TG1 calling, and TG1 calling is sent to TETRA intelligent radio gateway, and the latter initiates TG1 calling to the repeating base station of peer-to-peer system;

In following flow process, A ' is a user, and its number is also consistent with user A number in peer-to-peer system; The number of Virtual User B is exactly the number of local terminal system user B;

Group calling Establishing process is as follows:

(1) under this end system, user initiates group calling flow process

If intercommunication group is TG1, under this end system, MS B initiates TG1 group calling, wherein has a group call member MS A at peer-to-peer system; After this end system receives U-SETUP signaling, send D-SETUP signaling to bridge joint center, bridge joint center sends this message to the TETRA intelligent radio gateway that virtual-number B is corresponding, TETRA intelligent radio gateway sends U-SETUP signaling to peer-to-peer system with Virtual User B identity, peer-to-peer system sends after D-SETUP signaling receives D-SETUP signaling to TG1, MS A and enters group calling; Peer-to-peer system transmission D-CALL PROCEEDING signaling and D-CONNECT signaling are to the TETRA intelligent radio gateway at Virtual User B place, TETRA intelligent radio gateway notifies bridge joint center after both sides call all receives D-CONNECT signaling, and set up RTP passage and transmit voice, it is that the Traffic Channel of the identical time slot of Traffic Channel same frequency that TG1 distributes gets on that channel of eating dishes without rice or wine is switched to peer-to-peer system repeating base station;

(2) under peer-to-peer system, user initiates group calling flow process

If intercommunication group is TG1, under peer-to-peer system, MS A initiates TG1 group calling, and one of them group membership B is in this end system; After peer-to-peer system receives U-SETUP signaling, send D-SETUP signaling to the TETRA intelligent radio gateway of attachment TG1, call setup U-SETUP signaling is sent to bridge joint center after TETRA intelligent radio gateway receives, bridge joint center forwards U-SETUP signaling to this end system with user A ' identity, this end system sends D-SETUP signaling to TG1, and group membership B enters group calling after receiving D-SETUP signaling; This end system transmission D-CALL PROCEEDING and D-CONNECT signaling are to bridge joint center, they are transmitted to TETRA intelligent radio gateway by bridge joint center, after TETRA intelligent radio gateway receives D-CONNECT signaling, set up RTP passage and transmit voice, it is that the Traffic Channel of the identical time slot of Traffic Channel same frequency that TG1 distributes gets on that channel of eating dishes without rice or wine is switched to peer-to-peer system repeating base station.

2. individual calling is set up

(1) under this end system, user initiates individual calling flow process

Under this end system, MS B initiates the individual calling to MS A under peer-to-peer system, this end system receives U-SETUP signaling, if A is unregistered at this end system, or local terminal system pages A is without response, local terminal systems exchange center by call setup D-SETUP signaling forward to bridge joint center, bridge joint center finds out that this is the calling of MS B to MS A, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-SETUP signaling to peer-to-peer system with Virtual User B identity, and peer-to-peer system sends D-SETUP signaling to MS A, MS A receives rear call accepted and then sends U-CONNECT signaling to peer-to-peer system, peer-to-peer system sends D-CONNECT signaling to the TETRA intelligent radio gateway at Virtual User B place, U-CONNECT signaling is sent to bridge joint center after TETRA intelligent radio gateway receives, bridge joint center forwards U-CONNECT signaling to this end system with user A ' identity, this end system sends D-CONNECT signaling to MS B, send D-CONNECT-ACK signaling to bridge joint center, this message is transmitted to TETRA intelligent radio gateway (Virtual User B is residing) by bridge joint center, set up RTP passage after TETRA intelligent radio gateway receives and transmit voice, the Traffic Channel of the identical time slot of Traffic Channel same frequency that channel of eating dishes without rice or wine is switched to peer-to-peer system repeating base station distributes is got on, if MS A is not in peer-to-peer system or its refusal calling, peer-to-peer system sends D-RELEASE signaling to the TETRA intelligent radio gateway at Virtual User B place, U-DISCONNECT signaling is sent to bridge joint center after TETRA intelligent radio gateway receives, bridge joint center forwards U-DISCONNECT signaling to this end system with user A ' identity, and this end system sends D-RELEASE signaling to MS B terminated call,

(2) under peer-to-peer system, user initiates individual calling flow process

Under peer-to-peer system, MS A initiates the individual calling to MS B under this end system, after peer-to-peer system receives U-SETUP signaling, send D-SETUP signaling to the TETRA intelligent radio gateway at virtual-number B place, TETRA intelligent radio gateway receives MS A to after the calling of MS B, find out that party A-subscriber is in peer-to-peer system from bridge joint center, send U-SETUP signaling to bridge joint center, bridge joint center forwards this message with user A ' identity; This end system transmission D-SETUP signaling receives rear call accepted to MS B, MS B and then sends U-CONNECT signaling to this end system, and this end system sends D-CONNECT signaling to bridge joint center; This message is transmitted to TETRA intelligent radio gateway (Virtual User B is residing) by bridge joint center, TETRA intelligent radio gateway sends U-CONNECT signaling to peer-to-peer system with Virtual User B identity, peer-to-peer system sends D-CONNECT signaling to MS A, and send D-CONNECT-ACK signaling to the TETRA intelligent radio gateway at Virtual User B place, bridge joint center is transmitted to this end system, and this end system sends D-CONNECT-ACK signaling to MS B; TETRA intelligent radio gateway is set up RTP passage and is transmitted voice, and the Traffic Channel of the identical time slot of Traffic Channel same frequency that channel of eating dishes without rice or wine is switched to peer-to-peer system repeating base station distributes is got on; If MS B does not refuse this calling at this end system or it, then this end system sends D-RELEASE signaling to bridge joint center, this message is transmitted to TETRA intelligent radio gateway (Virtual User B is residing) by bridge joint center, TETRA intelligent radio gateway sends U-DISCONNECT signaling to peer-to-peer system with Virtual User B identity, and peer-to-peer system sends D-RELEASE signaling to MS A terminated call.

3. group calling is safeguarded

(1) local terminal system PTT operation

A) under this end system, user PTT asks flow process

If intercommunication group is TG1, under this end system, MS B presses PTT, send U-TX-DEMAND signaling to this end system, this end system sends D-TX-GRANTED(granted to another) signaling is to bridge joint center, bridge joint center finds out that this is that MS B asks the PTT of TG1, therefore to this message of TETRA intelligent radio gateway forwards that virtual-number B is corresponding, TETRA intelligent radio gateway sends U-TX-DEMAND signaling to peer-to-peer system with Virtual User B identity, and peer-to-peer system receives rear transmission D-TX-GRANTED(granted to another) signaling is to TG1;

When under peer-to-peer system, MS A talks, this end system MS B presses PTT and seizes Launch Right, after this end system receives U-TX-DEMAND signaling, send D-TX-INTERRUPT (granted to another) signaling to bridge joint center, bridge joint center finds out that this is that MS B asks the PTT of TG1, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-TX-DEMAND signaling to peer-to-peer system with Virtual User B identity, peer-to-peer system receives rear transmission D-TX-INTERRUPT (granted to another) signaling to TG1,

B) under this end system, user PTT discharges flow process

If intercommunication group is TG1, under this end system, MS B talks, PTT is unclamped in speech end, send U-TX-CEASED signaling to this end system, this end system sends D-TX-CEASED signaling to bridge joint center, bridge joint center finds out that this is the PTT releasing request of MS B to TG1, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-TX-CEASED signaling to peer-to-peer system with Virtual User B identity, and peer-to-peer system receives rear transmission D-TX-CEASED signaling to TG1;

(2) peer-to-peer system PTT operates

A) under peer-to-peer system, user PTT asks flow process

If intercommunication group is TG1, during current unmanned speech, under peer-to-peer system, MS A presses PTT, request Launch Right; After peer-to-peer system receives U-TX-DEMAND signaling, send D-TX-GRANTED (granted to another) signaling to the TETRA intelligent radio gateway of attachment TG1, TETRA intelligent radio gateway receives MS A and asks the PTT of TG1, find out that party A-subscriber is in peer-to-peer system from bridge joint center, U-TX-DEMAND signaling is sent to bridge joint center, bridge joint center forwards this message with user A ' identity, and this end system receives rear transmission D-TX-GRANTED(granted to another) signaling is to TG1;

When under this end system, MS B talks, peer-to-peer system MS A presses PTT, seizes Launch Right; After peer-to-peer system receives U-TX-DEMAND signaling, send D-TX-INTERRUPT (granted to another) signaling to the TETRA intelligent radio gateway of attachment TG1, TETRA intelligent radio gateway receives MS A and asks the PTT of TG1, find out that party A-subscriber is in peer-to-peer system from bridge joint center, U-TX-DEMAND signaling is sent to bridge joint center, bridge joint center forwards this message with user A ' identity, and this end system receives rear transmission D-TX-INTERRUPT(granted to another) signaling is to TG1;

B) under peer-to-peer system, user PTT discharges flow process

Under peer-to-peer system, MS A talks, and PTT is unclamped in speech end; Send U-TX-CEASED signaling to peer-to-peer system, peer-to-peer system sends D-TX-CEASED signaling to the TETRA intelligent radio gateway of attachment TG1, TETRA intelligent radio gateway receives the PTT releasing request of MS A to TG1, find out that MS A is in peer-to-peer system from bridge joint center, U-TX-CEASED signaling is sent to bridge joint center, bridge joint center forwards this message with user A ' identity, and this end system receives rear transmission D-TX-CEASED signaling to TG1.

4. individual calling is safeguarded

(1) local terminal system PTT operation

A) under this end system, user PTT asks flow process

Under this end system, MS B presses PTT, send U-TX-DEMAND signaling to this end system, this end system sends D-TX-GRANTED(granted to another) signaling is to bridge joint center, bridge joint center finds out that this is that MS B asks the PTT of MS A, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-TX-DEMAND signaling to peer-to-peer system with Virtual User B identity, and peer-to-peer system receives rear transmission D-TX-GRANTED(granted to another) signaling is to MS A;

When under peer-to-peer system, MS A talks, this end system MS B presses PTT and seizes Launch Right, after this end system receives U-TX-DEMAND signaling, send D-TX-INTERRUPT (granted to another) signaling to bridge joint center, bridge joint center finds out that this is that MS B asks the PTT of MS A, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-TX-DEMAND signaling to peer-to-peer system with Virtual User B identity, peer-to-peer system receives rear transmission D-TX-INTERRUPT (granted to another) signaling to MS A,

B) under this end system, user PTT discharges flow process

Under this end system, MS B talks, PTT is unclamped in speech end, send U-TX-CEASED signaling to this end system, this end system sends D-TX-CEASED signaling to bridge joint center, bridge joint center finds out that this is the PTT releasing request of MS B to MS A, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-TX-CEASED signaling to peer-to-peer system with Virtual User B identity, and peer-to-peer system receives rear transmission D-TX-CEASED signaling to MS A;

(2) peer-to-peer system PTT operates

A) under peer-to-peer system, user PTT asks flow process

During current unmanned speech, under peer-to-peer system, MS A presses PTT, request Launch Right; After peer-to-peer system receives U-TX-DEMAND signaling, send D-TX-GRANTED (granted to another) signaling to the TETRA intelligent radio gateway at virtual-number B place, TETRA intelligent radio gateway receives MS A and asks the PTT of MS B, find out that party A-subscriber is in peer-to-peer system from bridge joint center, U-TX-DEMAND signaling is sent to bridge joint center, bridge joint center forwards this message with user A ' identity, and this end system receives rear transmission D-TX-GRANTED(granted to another) signaling is to MS B;

When under this end system, MS B talks, peer-to-peer system MS A presses PTT, seizes Launch Right; After peer-to-peer system receives U-TX-DEMAND signaling, send D-TX-INTERRUPT (granted to another) signaling to the TETRA intelligent radio gateway at virtual-number B place, TETRA intelligent radio gateway receives MS A and asks the PTT of MS B, find out that party A-subscriber is in peer-to-peer system from bridge joint center, U-TX-DEMAND signaling is sent to bridge joint center, bridge joint center forwards this message with user A ' identity, and this end system receives rear transmission D-TX-INTERRUPT(granted to another) signaling is to MS B;

B) under peer-to-peer system, user PTT discharges flow process

Under peer-to-peer system, MS A talks, and PTT is unclamped in speech end; Send U-TX-CEASED signaling to peer-to-peer system, peer-to-peer system sends D-TX-CEASED signaling to the TETRA intelligent radio gateway at virtual-number B place, TETRA intelligent radio gateway receives the PTT releasing request of MS A to MS B, find out that MS A is in peer-to-peer system from bridge joint center, U-TX-CEASED signaling is sent to bridge joint center, bridge joint center forwards this message with user A ' identity, and this end system receives rear transmission D-TX-CEASED signaling to MS B.

5. group calling release

(1) user's call release flow process under this end system

If intercommunication group is TG1, MS B call release under this end system, sends U-DISCONNECT signaling to this end system, if local terminal systems exchange center allows MS B to hang up this group calling, then sends D-RELEASE signaling to bridge joint center; Bridge joint center finds out that this is the call release request of MS B to TG1, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-DISCONNECT signaling to peer-to-peer system with Virtual User B identity, if allow call release after peer-to-peer system receives, then send D-RELEASE signaling to TG1;

(2) user's call release flow process under peer-to-peer system

MS A drop calls under peer-to-peer system, send U-DISCONNECT signaling to peer-to-peer system, peer-to-peer system sends D-RELEASE signaling to the TETRA intelligent radio gateway of attachment TG1, TETRA intelligent radio gateway receives the call release request of MS A, find out that party A-subscriber is in peer-to-peer system from bridge joint center, U-DISCONNECT signaling is sent to bridge joint center, bridge joint center forwards this message to this end system with user A ' identity, if this end system allows call release, sends D-RELEASE signaling to TG1.

6. individual calling release

(1) user's call release flow process under this end system

MS B call release under this end system, sends U-DISCONNECT signaling to this end system, and this end system sends D-RELEASE signaling to bridge joint center; Bridge joint center finds out that this is the call release request of MS B to MS A, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-DISCONNECT signaling to peer-to-peer system with Virtual User B identity, and peer-to-peer system receives rear transmission D-RELEASE signaling to MS A;

(2) user's call release flow process under peer-to-peer system

MS A drop calls under peer-to-peer system, send U-DISCONNECT signaling to peer-to-peer system, peer-to-peer system sends D-RELEASE signaling to the TETRA intelligent radio gateway at virtual-number B place, TETRA intelligent radio gateway receives the call release request of MS A, find out that party A-subscriber is in peer-to-peer system from bridge joint center, send U-DISCONNECT signaling to bridge joint center, bridge joint center forwards this message to this end system with user A ' identity, and this end system sends D-RELEASE signaling to MS B.

7. short data intercommunication flow

Short data intercommunication flow mainly comprises status message, Type1-3 or Type4 without transport layer short data, the intercommunication of Type4 transport layer short data;

(1) under this end system, user sends status message to peer-to-peer system flow process

A) group address

If intercommunication group is TG1, under this end system, MS B sends status message to TG1, after this end system receives U-STATUS (pre-coded status), send D-STATUS (pre-coded status) signaling to bridge joint center, bridge joint center finds out that this is the status message of MS B to TG1, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-STATUS (pre-coded status) signaling to peer-to-peer system with Virtual User B identity, peer-to-peer system receives rear transmission D-STATUS (pre-coded status) signaling to TG1, peer-to-peer system switching center sends D-STATUS(acknowledgement) signaling is to the TETRA intelligent radio gateway at virtual-number B place, after TETRA intelligent radio gateway receives, U-STATUS(acknowledgement is sent to bridge joint center) signaling, do not process after bridge joint center receives, because be group address status message, local terminal systems exchange center can issue D-STATUS(acknowledgement) signaling to MS B, do not need to wait for the report of coming of bridge joint center,

B) individual address

Under this end system, MS B sends status message to MS A under peer-to-peer system, after this end system receives U-STATUS (pre-coded status), if A is unregistered at native system, or A is without response in native system paging, local terminal systems exchange center by D-STATUS (pre-coded status) forward to bridge joint center, bridge joint center finds out that this is the status message of MS B to MS A, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-STATUS (pre-coded status) signaling to peer-to-peer system with Virtual User B identity, peer-to-peer system receives rear transmission D-STATUS (pre-coded status) signaling to MS A, peer-to-peer system switching center sends D-STATUS(acknowledgement) signaling is to the TETRA intelligent radio gateway at virtual-number B place, after TETRA intelligent radio gateway receives, find out that party A-subscriber is in peer-to-peer system from bridge joint center, U-STATUS(acknowledgement is sent to bridge joint center) signaling, bridge joint center forwards this message to this end system with user A ' identity, and this end system sends D-STATUS(acknowledgement) signaling is to MS B,

(2) under peer-to-peer system, user sends status message to local terminal system flow

A) group address

If intercommunication group is TG1, under peer-to-peer system, MS A sends status message to TG1, MS A sends U-STATUS(pre-coded status) signaling is to peer-to-peer system, peer-to-peer system sends D-STATUS(pre-coded status) signaling gives the TETRA intelligent radio gateway of attachment TG1, TETRA intelligent radio gateway receives MS A to the status message of TG1, find out that party A-subscriber is in peer-to-peer system from bridge joint center, U-STATUS(pre-coded status is sent to bridge joint center) signaling, bridge joint center forwards this message to this end system with user A ' identity; This end system sends D-STATUS(pre-coded status) signaling is to TG1, local terminal systems exchange center sends D-STATUS(acknowledgement), to bridge joint center, do not process after bridge joint center receives; Because be group address status message, peer-to-peer system switching center can issue D-STATUS(acknowledgement) signaling to MS A, do not need to wait for the report of coming of bridge joint center;

B) individual address

Under peer-to-peer system, MS A sends status message to this end system MS B, MS A sends U-STATUS(pre-coded status) signaling is to peer-to-peer system, peer-to-peer system sends D-STATUS(pre-coded status) signaling is to the TETRA intelligent radio gateway at virtual-number B place, TETRA intelligent radio gateway receives MS A to the status message of MS B, find out that party A-subscriber is in peer-to-peer system from bridge joint center, U-STATUS(pre-coded status is sent to bridge joint center) signaling, bridge joint center forwards this message to this end system with user A ' identity; This end system sends D-STATUS(pre-coded status) signaling is to MS B, local terminal systems exchange center sends D-STATUS(acknowledgement) to bridge joint center, bridge joint center finds out that this is the status message ACK to MS A, bridge joint center is to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-STATUS (acknowledgement) signaling to peer-to-peer system with Virtual User B identity, and peer-to-peer system receives rear transmission D-STATUS (acknowledgement) signaling to MS A;

Short data type has divided Four types, is Type 1-4 respectively,

Type1: allowing user to define short data content is that 16bit is long;

Type2: allowing user to define short data content is that 32bit is long;

Type3: allowing user to define short data content is that 64bit is long;

Type4: the Protocol identifier of a definition 8bit, and to define short data content be that 0-2039bit is long; Type4 is divided into again two types, and without transport layer data and transport layer data, difference is that transport layer data defines methodology for providing enhancement layer 3 data, services in data content, comprises end-to-end response, the functions such as storage forwarding;

(3) under this end system, user sends Type1-3 or Type4 without transport layer short data to peer-to-peer system flow process

A) group address

If intercommunication group is TG1, under this end system, MS B sends Type1-3 or Type4 without transport layer short data to TG1, after this end system receives U-SDS-DATA signaling, send D-SDS-DATA signaling to bridge joint center, bridge joint center finds out that this is the short data of MS B to TG1, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-SDS-DATA signaling to peer-to-peer system with Virtual User B identity, and peer-to-peer system receives rear transmission D-SDS-DATA signaling to TG1;

B) individual address

Under this end system, MS B sends Type1-3 or Type4 without MS A under transport layer short data to peer-to-peer system, after this end system receives U-SDS-DATA signaling, if A is unregistered at native system, or A is without response in native system paging, local terminal systems exchange center by D-SDS-DATA forward to bridge joint center, bridge joint center finds out that this is the short data of MS B to MS A, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-SDS-DATA signaling to peer-to-peer system with Virtual User B identity, peer-to-peer system receives rear transmission D-SDS-DATA signaling to MS A,

(4) under peer-to-peer system, user sends Type1-3 or Type4 without transport layer short data to local terminal system flow

A) group address

If intercommunication group is TG1, under peer-to-peer system, MS A sends Type1-3 or Type4 without transport layer short data to TG1, after peer-to-peer system receives U-SDS-DATA signaling, send D-SDS-DATA signaling to the TETRA intelligent radio gateway of attachment TG1, TETRA intelligent radio gateway receives the short data of MS A, find out that party A-subscriber is in peer-to-peer system from bridge joint center, forward this message to this end system to bridge joint center with user A ' identity, this end system receives rear transmission D-SDS-DATA signaling to TG1;

B) individual address

Under peer-to-peer system, MS A sends Type1-3 or Type4 without MS B under transport layer short data to this end system, after peer-to-peer system receives U-SDS-DATA signaling, send D-SDS-DATA signaling to the TETRA intelligent radio gateway at virtual-number B place, TETRA intelligent radio gateway receives the short data of MS A, find out that party A-subscriber is in peer-to-peer system from bridge joint center, forward this message to this end system to bridge joint center with user A ' identity, this end system receives rear transmission D-SDS-DATA signaling to MS B;

(5) under this end system, user sends Type4 transport layer short data to peer-to-peer system flow process

A) group address

If intercommunication group is TG1, under this end system, MS B sends Type4 transport layer short data to TG1, after this end system receives U-SDS-DATA (TRANSFER) signaling, send D-SDS-DATA (TRANSFER) signaling to bridge joint center, bridge joint center finds out that this is the short data of MS B to TG1, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-SDS-DATA (TRANSFER) signaling to peer-to-peer system with Virtual User B identity, peer-to-peer system sends D-SDS-DATA (TRANSFER) signaling to TG1, peer-to-peer system switching center sends D-SDS-DATA(Report, message received) signaling is to the TETRA intelligent radio gateway at virtual-number B place, after TETRA intelligent radio gateway receives, U-SDS-DATA(Report is sent to bridge joint center, message received) signaling, do not process after bridge joint center receives, because be group address short data, local terminal systems exchange center can issue D-SDS-DATA(Report, message received) signaling to MS B, do not need to wait for the report of coming of bridge joint center,

B) individual address

Under this end system, MS B sends Type4 transport layer short data to MS A under peer-to-peer system, after this end system receives U-SDS-DATA (TRANSFER) signaling, if A is unregistered at native system, or A is without response in native system paging, local terminal systems exchange center by D-SDS-DATA (TRANSFER) forward to bridge joint center, bridge joint center finds out that this is the short data of MS B to MS A, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-SDS-DATA (TRANSFER) signaling to peer-to-peer system with Virtual User B identity, peer-to-peer system sends D-SDS-DATA (TRANSFER) signaling to MS A, if short data requires to reply report and MS A have received, send U-SDS-DATA(Report, message received) signaling is to peer-to-peer system, peer-to-peer system sends D-SDS-DATA(Report, message received) signaling is to the TETRA intelligent radio gateway at virtual-number B place, TETRA intelligent radio gateway receives the report of MS A, find out that party A-subscriber is in peer-to-peer system from bridge joint center, bridge joint center forwards this message to this end system with user A ' identity, this end system sends D-SDS-DATA(Report, message received) signaling is to MS B, if short data requires to reply report but MS A does not receive or replys and reports unsuccessfully, then peer-to-peer system switching center sends D-SDS-DATA (Report after waiting for report time-out, transfer failed) to the TETRA intelligent radio gateway at virtual-number B place, from bridge joint center, the report that TETRA intelligent radio gateway receives failure finds out that party A-subscriber is in peer-to-peer system, bridge joint center forwards this message to this end system with user A ' identity, this end system sends D-SDS-DATA(Report, transfer failed) signaling is to MS B.

(6) under peer-to-peer system, user sends Type4 transport layer short data to local terminal system flow

A) group address

Under peer-to-peer system, MS A sends Type4 transport layer short data to TG1, after peer-to-peer system receives U-SDS-DATA (TRANSFER) signaling, send D-SDS-DATA (TRANSFER) signaling to the TETRA intelligent radio gateway of attachment TG1, TETRA intelligent radio gateway receives the Type4 transport layer short data of MS A, find out that party A-subscriber is in peer-to-peer system from bridge joint center, send U-SDS-DATA (TRANSFER) signaling to bridge joint center, bridge joint center forwards this message to this end system with user A ' identity; This end system sends D-SDS-DTATA (TRANSFER) signaling to TG1, and local terminal systems exchange center sends D-SDS-DATA(Report, message received) to bridge joint center, do not process after bridge joint center receives; Because be group address short data, peer-to-peer system switching center can issue D-SDS-DATA(Report, message received) signaling to MS A, do not need to wait for the report of coming of bridge joint center;

B) individual address

Under peer-to-peer system, MS A sends Type4 transport layer short data to MS B under this end system, after peer-to-peer system receives U-SDS-DATA (TRANSFER) signaling, send D-SDS-DATA (TRANSFER) signaling to the TETRA intelligent radio gateway at virtual-number B place, TETRA intelligent radio gateway receives the Type4 transport layer short data of MS A, find out that party A-subscriber is in peer-to-peer system from bridge joint center, U-SDS-DTATA (TRANSFER) signaling is sent to bridge joint center, bridge joint center forwards this message to this end system with user A ' identity, this end system sends D-SDS-DTATA (TRANSFER) signaling to MS B, if short data requires to reply report and MS B have received, send U-SDS-DTATA (Report, message received) signaling give this end system, bridge joint center finds out that this is the report of MS B to MS A, therefore to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-SDS-DATA (Report with Virtual User B identity, message received) signaling is to peer-to-peer system, peer-to-peer system sends D-SDS-DATA (Report, message received) signaling is to MS A, if short data requires to reply report but MS B does not receive or replys and reports unsuccessfully, then send D-SDS-DATA (Report after local terminal systems exchange center waits report time-out, transfer failed) to bridge joint center, bridge joint center is to this message of TETRA intelligent radio gateway forwards at virtual-number B place, TETRA intelligent radio gateway sends U-SDS-DATA (Report with Virtual User B identity, transfer failed) signaling is to peer-to-peer system, peer-to-peer system sends D-SDS-DATA (Report, transfer failed) signaling to MS A.

Annotation:

MS:Mobile Station travelling carriage;

The pan-European trunked radio of TETRA:Trans European Trunked Radio;

GIS:Geographic Information System GIS-Geographic Information System;

RTP:Real-time Transport Protocol RTP;

Peer-to-peer system: i.e. original system, wishes by interconnected system;

This end system: the system namely newly added, ites is desirable to carry out interconnected system with peer-to-peer system;

Call id:call identifier is used as the unique identification called out about this between calling participant and exchange;

PTT:push to talk presses and namely says, PTT operation refers to presses or unclamp PTT operation; PTT request refers to press PTT operation, and PTT release refers to unclamp PTT operation;

Granted to another: license to other side;

Pre-coded status: precoding state;

Acknowledgement: response;

Protocol identifier: protocol-identifier;

TRANSFER: transmission data;

Report, message received: short data is reported, represents and receives;

Report, transfer failed: short data is reported, represents bust this;

U-SETUP: calling terminal issues the call request signaling of system facility;

U-CONNECT: terminal called issues the call answering signaling of system facility, indicating terminal has been ready to connect;

U-TX-DEMAD: terminal issues the PTT demand signalling of system facility;

U-TX-CEASED: terminal issues the PTT release signaling of system facility;

U-DISCONNECT: terminal issues the call release signaling of system facility;

U-SDS-DATA: terminal issues the short data signaling of system facility;

U-STATUS: terminal issues the status message signaling of system facility;

D-CALL PROCEEDING: system facility issues the indicating call well afoot signaling of calling terminal;

D-SETUP: system facility issues the call set up signaling of terminal called;

D-CONNECT: system facility issues the call through signaling of calling terminal;

D-CONNECT-ACK: system facility issues the call through signaling of terminal called;

D-TX-GRANTED: system facility issues the Launch Right signaling of terminal, Launch Right is for authorizing or refusing authorize or license to its other party;

D-TX-CEASED: system facility issues the Launch Right release signaling of terminal;

D-TX-INTERRUPT: the Launch Right that system facility issues terminal is preempted signaling;

D-RELEASE: system facility issues the calling release signaling of terminal;

D-SDS-DATA: system facility issues the short data signaling of terminal;

D-STATUS: system facility issues the status message signaling of terminal.

The present invention also tool has the following advantages:

1, when the interface of not open system, realize the intercommunication between two different digital group systems by existing standard air interface, interworking service comprises individual calling (full duplex, half-duplex), group calling, short data intercommunication etc.;

2, networking equipment is flexible, can be accessed by any one base station of peer-to-peer system, does not need to do any operation to peer-to-peer system.

Should be understood that, the above discloses from the angle of specific embodiment further to technology contents of the present invention, its object is to allow everybody be easier to understand content of the present invention, but does not represent embodiments of the present invention and rights protection is confined to this.Scope is illustrated in appended claims, every apparent amendment within aim of the present invention, also due within protection of the present invention.

Claims

1. realize the system that interconnects between digital clustering communication system based on air interface, it is characterized in that comprising bridge system, interconnecting of this end system and peer-to-peer system is realized by bridge system, bridge system is by bridge joint center, one or more TETRA intelligent radio gateway composition, the TETRA intelligent radio gateway of each intercommunication group is selected by network management configuration or load dynamic allocation scheme in bridge joint center, and adhered to by the group that the TETRA intelligent radio gateway selected initiates intercommunication group to peer-to-peer system, intercommunication group is adhered to the form of current group, to guarantee that peer-to-peer system can send the call signaling of intercommunication group to TETRA intelligent radio gateway when there being the calling of intercommunication group, TETRA intelligent radio gateway is made up of controller and multiple TETRA transceiver, and TETRA intelligent radio gateway is connected by air interface with peer-to-peer system, and each TETRA intelligent radio gateway requires that peer-to-peer system arranges a base station for forwarding, bridge joint center and TETRA intelligent radio gateway coordinate this end system, and the individual user completing user and peer-to-peer system in this end system, the intercommunication process of business function organizing user, business function mainly comprises individual calling, group calling and short data.

2. the system that interconnects realizing between digital clustering communication system based on air interface according to claim 1, it is characterized in that the TETRA transceiver number of described TETRA transceiver number and peer-to-peer system repeating base station is consistent, the upstream frequency of the TETRA transceiver of each TETRA intelligent radio gateway is set to the downstream frequency of peer-to-peer system repeating base station TETRA transceiver, and the downstream frequency of the TETRA transceiver of each TETRA intelligent radio gateway is set to the upstream frequency of peer-to-peer system repeating base station TETRA transceiver.

3. utilize and carry out based on the air interface system of interconnecting realized between digital clustering communication system the method that interconnects described in claim 1, it is characterized in that the method interconnected is as follows:

(1) group calling intercommunication

Step 3, TG1 is established to be one of them intercommunication group;

(2) individual calling intercommunication

Step 2,

Step 3,

(3) short data intercommunication

A) group address

Step 3, TG1 is established to be intercommunication group

Step 4,

B) individual address

Step 2,

Step 3,