CN104918220B

CN104918220B - The system that interconnects between digital clustering communication system is realized based on air interface

Info

Publication number: CN104918220B
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: 2018-07-06
Anticipated expiration: 2035-05-29
Also published as: CN104918220A

Abstract

The present invention relates to the systems that interconnects between a kind of realization digital clustering communication system based on air interface.It is characterized in that interconnecting for this end system and peer-to-peer system is realized by bridge system, bridge system is made of bridge joint center, one or more TETRA intelligent radio gateways, TETRA intelligent radios gateway is made of controller and multiple TETRA transceivers, TETRA intelligent radios gateway is connected with peer-to-peer system by air interface, and each TETRA intelligent radios gateway requires that peer-to-peer system sets a base station for forwarding；User and a user of peer-to-peer system, the business intercommunication for organizing user in this end system are completed in bridge joint center and the cooperation of TETRA intelligent radios gateway.Under interface case, the intercommunication between two different digital group systems is realized by existing standard air interface between not open system by the present invention；Networking equipment is flexible, is accessible to any base station of peer-to-peer system, is not required to do peer-to-peer system any operation.

Description

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

Technical field

The present invention relates to the systems that interconnects between a kind of realization 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.Collection Group communication system belongs to dedicated mobile communications subsystem, it is a kind of shared resource, contribution, shared channel equipment and service Multipurpose, dynamical wireless dispatching communication system.

In network topology structure, trunked communication system has the composition similar with public access mobile radio：Terminal is led to Cross air interface and base station communication；Each base station is all connected to one by the different sons such as function of exchange, management function, scheduling feature The switching control center of system composition；The prior network planning determines geographical addressing and the running parameter of each base station, so as to It is built into the region overlay of cellular cell.

TETRA standards define air interface communication agreement, the i.e. consensus standard of base station and terminal room communication, actually make In, the terminal of different manufacturers and base station substantially can be compatible.

TETRA standards also define intersystem interface intercommunication, i.e. agreement between different manufacturers switching centre.But in reality In the market, in order to protect the domain of oneself, rival factory is prevented to enter, the producer being introduced into often is reluctant that cooperation interconnect mutually Logical debugging, therefore to realize that across interconnecting for producer be still a problem.

Existing intercommunication mode is to access peer-to-peer system by a digital ride, is exhaled with realization group in back-to-back fashion Intercommunication.

Cluster communication cannot develop as Cellular Networks, although there is many external factor, the development of its own technology There are bottlenecks, and wherein most serious is exactly the problem of interconnecting.Including the intercommunication between different system, base station and exchange The intercommunication of intercommunication or even consolidated network different terminals between the heart is all problem.

Intercommunication mode is mainly embedded into peer-to-peer system realization intercommunication by digital ride between system currently on the market.It is embedded The intercommunication mode of digital ride can only realize that group is exhaled, and a ride can only be supported to call all the way simultaneously.But the demand of user is past Toward not only being exhaled comprising group, the interworking services such as individual calling, short data are further included.Obviously by existing mode be difficult meet it is growing Intercommunication demand.

Invention content

For problems of the prior art, number is realized based on air interface the purpose of the present invention is to provide one kind The technical solution of the system that interconnects between trunked communication system.

The system that interconnects realized based on air interface between digital clustering communication system, it is characterised in that including Bridge system realizes interconnecting for this end system and peer-to-peer system by bridge system, bridge system by bridge center, one Or multiple TETRA intelligent radios gateway compositions, bridge joint center selects each intercommunication by network management configuration or load dynamic allocation scheme The TETRA intelligent radio gateways of group, and the group for passing through TETRA intelligent radios gateway to the peer-to-peer system initiation intercommunication group of selection is attached It, intercommunication group is adhered in the form of currently organizing, to ensure that peer-to-peer system can be to TETRA intelligent radios when there is the calling of intercommunication group Gateway sends the call signaling of intercommunication group；TETRA intelligent radios gateway is made of controller and multiple TETRA transceivers, TETRA intelligent radios gateway is connected with peer-to-peer system by air interface, and each TETRA intelligent radios gateway requires opposite end system System sets a base station for forwarding；Bridge joint center and TETRA intelligent radio gateways coordinate this end system, complete in this end system The intercommunication of user and a user of peer-to-peer system, the business function for organizing user are handled, business function mainly includes individual calling, group is exhaled and Short data.

The system that interconnects realized based on air interface between digital clustering communication system, it is characterised in that described TETRA transceivers number and the TETRA transceiver numbers of peer-to-peer system repeating base station be consistent, each TETRA intelligence The upstream frequency of the TETRA transceivers of energy radio network gateway is set as the downlink frequency of peer-to-peer system repeating base station TETRA transceivers Rate, the downstream frequency of the TETRA transceivers of each TETRA intelligent radios gateway are set as peer-to-peer system repeating base station TETRA receipts The upstream frequency of sender.

A kind of interconnection using between the realization digital clustering communication system described in claim 1 based on air interface The method that intercommunicating system interconnects, it is characterised in that the method to interconnect is as follows：

（1）Group exhales intercommunication

Step 1: this end system and peer-to-peer system is set to need the group of intercommunication on webmaster；

Step 2: bridge joint center is selected the TETRA intelligence of each intercommunication group by network management configuration or load dynamic allocation scheme Radio network gateway, and the TETRA intelligent radios gateway for passing through selection initiates the group attachment of intercommunication group to peer-to-peer system repeating base station, mutually Logical group is adhered in the form of currently organizing, to ensure that peer-to-peer system can be to TETRA intelligent radio gateways when there is the calling of intercommunication group Send the call signaling of intercommunication group；

Step 3: it is one of intercommunication group to set TG1；

When there is TG1 groups to exhale in this end system, bridge joint center can receive TG1 callings, and TG1 callings are passed through TETRA Intelligent radio gateway initiates TG1 callings to peer-to-peer system repeating base station, and after the success of peer-to-peer system call setup, repeating base station can divide With a Traffic Channel, channel distribution letter of the TETRA intelligent radios gateway in the peer-to-peer system call set up signaling received Breath is also switched to channel and Traffic Channel of the opposite end repeating base station for the identical time slot of Traffic Channel identical frequency of TG1 distribution Up, both sides calling is docked successfully；

When peer-to-peer system has TG1 groups to exhale, since TETRA intelligent radios gateway has carried out a group attachment to peer-to-peer system, because This peer-to-peer system repeating base station has call signaling and is sent to TETRA intelligent radio gateways, and TETRA intelligent radios gateway is through bridge joint TG1 groups are initiated to this end system and are exhaled in center；TETRA intelligent radios gateway is simultaneously according to the letter received in peer-to-peer system call signaling Road distributes information, channel of eating dishes without rice or wine is switched to identical for the Traffic Channel identical frequency of TG1 distribution with peer-to-peer system repeating base station The Traffic Channel of time slot gets on；After local terminal system calling is successfully established, success is just docked in the calling on both sides；

Step 4: after this end system and peer-to-peer system calling docking are got up, both sides can carry out in respective Traffic Channel Call；

（2）Individual calling intercommunication

Step 1: when intercommunication user's registration is to this end system, bridges and lead to centrally through reception local terminal systems exchange center Know and learn that the user is entered in this end system, if the user is A, bridge joint center selects some TETRA intelligence nothing using A numbers Gauze, which is closed to peer-to-peer system, initiates to register；

Step 2:

A-1, when local terminal system user call peer-to-peer system user when, if called subscriber this end system it is unregistered or Person's local terminal system pages are called no response, and local terminal systems exchange center to center is bridged, bridges Call Forwarding centrally through choosing The TETRA intelligent radios gateway for selecting the intercommunication user's registration initiates to call to peer-to-peer system repeating base station；

A-2, when peer-to-peer system user call local terminal system user when, since intercommunication user has been noted to peer-to-peer system Volume, corresponding TETRA intelligent radios gateway can receive the call signaling of peer-to-peer system, and TETRA intelligent radio gateways are through in bridge joint The heart initiates to call to this end system；

Step 3:

In a-1, it is called after connecting to send to call to TETRA intelligent radios gateway and connects signaling, TETRA intelligence nothings Gauze closes the channel allocation information connected according to the peer-to-peer system calling received in signaling, and eating dishes without rice or wine, channel is switched to peer-to-peer system The Traffic Channel of the identical time slot of identical frequency gets on, and calling is connected signaling and issues user under this end system through bridge joint center, The calling on both sides in this way is docked successfully；

In a-2, it is called this end system after connecting and sends calling connection signaling to TETRA intelligent radios gateway, TETRA intelligent radios gateway sends call answering signaling to peer-to-peer system repeating base station, and after peer-to-peer system calling is connected, transmission is exhaled Connection signaling is made to give TETRA intelligent radio gateways, TETRA intelligent radios gateway connects signaling according to the peer-to-peer system calling received In channel allocation information, channel of eating dishes without rice or wine is switched to the Traffic Channel of the identical time slot of peer-to-peer system identical frequency up, in this way Success is just docked in the calling on both sides；

（3）Short data intercommunication

a）Group address

Step 2: bridge joint center is selected the TETRA intelligence of each intercommunication group by network management configuration or load dynamic allocation scheme Radio network gateway, and pass through the TETRA intelligent radios gateway of selection the group of intercommunication group is initiated to peer-to-peer system and adhere to, intercommunication group is to work as Preceding group of form attachment, to ensure that peer-to-peer system can be sent when there is the short data of intercommunication group to TETRA intelligent radios gateway；

Step 3: it is intercommunication group to set TG1

User sends TG1 group short data under b-1, this end system, and bridge joint center can receive TG1 short data, and by TG1 short numbers It is sent according to by TETRA intelligent radios gateway to peer-to-peer system repeating base station, peer-to-peer system can send short data to TG1 after receiving Group user；

User sends TG1 group short data under b-2, peer-to-peer system, after TETRA intelligent radio gateways receive, through bridging center The group short data of TG1 is initiated to this end system, this end system can send short data and give TG1 group users after receiving；

Step 4:

In b-1, peer-to-peer system can send short number and be reported to corresponding TETRA intelligent radios gateway simultaneously, TETRA intelligent radio gateways forward it to bridge joint center, and bridge joint center is not handled after receiving；Because it is a group short data, local terminal Systems exchange center can issue short number and be reported to sender, without waiting for the report that bridge joint center comes；

In b-2, local terminal systems exchange center can send short number and be reported to bridge joint center simultaneously, and bridge joint center is received It is not handled after；Because being a group short data, peer-to-peer system switching centre can issue short number and be reported to sender, without waiting for The report that bridge joint center comes；

B) a address

Step 1: when intercommunication user's registration is to this end system, bridges and lead to centrally through reception local terminal systems exchange center Know and learn that the user is linked into this end system, which is set as A, and bridge joint center selects a TETRA intelligence nothing using A numbers Gauze, which is closed to peer-to-peer system, initiates to register；

Step 2:

C-1, this end system send short data to peer-to-peer system user when, if recipient this end system it is unregistered or Person's local terminal system pages are called no response, local terminal systems exchange center by short data forward to center is bridged, bridge centrally through The TETRA intelligent radios gateway of the intercommunication user's registration is selected to send short data to peer-to-peer system repeating base station；

C-2, peer-to-peer system user send short data to local terminal system user when, due to intercommunication user to peer-to-peer system into Row registration, corresponding TETRA intelligent radios gateway can receive short data, and TETRA intelligent radios gateway is through bridging center to local terminal System sends short data；

Step 3:

In c-1, if report is replied in short data requirement and recipient has replied report, during peer-to-peer system exchanges For the heart by the short number received it was reported that issuing TETRA intelligent radio gateways, TETRA intelligent radios gateway issues local terminal through bridge joint center Sender under system；If report is replied in short data requirement but recipient does not reply report, recipient does not receive or replys Report failure, the then short number that failure is sent after peer-to-peer system switching centre waiting report time-out are reported to TETRA intelligent radios Gateway, TETRA intelligent radios gateway issue this end system through bridge joint center and issue the side of sending；

In c-2, if report is replied in short data requirement and recipient has replied report, the center of bridge joint receives this After the report of end system switching centre, corresponding TETRA intelligent radios gateway is selected to send the report to sender to peer-to-peer system； If short data needs reply report but recipient does not reply report, recipient does not receive or replys report failure, then originally End system switching centre sends failure short number after waiting for report overtime is reported to bridge joint center, and the selection of bridge joint center is corresponding TETRA intelligent radio gateways issue peer-to-peer system sender.

Since the intercommunication mode of existing embedded ride in the market can only realize that group is exhaled, and can only support to exhale all the way simultaneously It cries, the present invention is that solve in addition to group is exhaled, demand of the user to individual calling, short data intercommunication, and the present invention can support multichannel simultaneously Calling, the way of calling, be solely dependent upon peer-to-peer system channel resource number, be greatly saved into than existing intercommunication mode This；In the case of the interface of not open system, the intercommunication of more business can be realized as far as possible.

Description of the drawings

Fig. 1 is bridge system networking diagram；

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

Specific embodiment

The invention will be further described with reference to the accompanying drawings of the specification：

The present invention is the implementation method of two different manufacturers digital cluster system intercommunications, as shown in Figure 1, based on air interface Realize the system that interconnects between digital clustering communication system, including bridge system, by bridge system realize this end system and Peer-to-peer system interconnects, and bridge system is made of bridge joint center, one or more TETRA intelligent radio gateways, in bridge joint The heart presses the TETRA intelligent radio gateways of each intercommunication group of policy selections such as network management configuration or load dynamic allocation, and passes through selection TETRA intelligent radios gateway to peer-to-peer system initiate intercommunication group group adhere to, intercommunication group is adhered in the form of currently organizing, with true The call signaling of intercommunication group can be sent when there is the calling of intercommunication group to TETRA intelligent radios gateway by protecting peer-to-peer system；TETRA intelligence Energy radio network gateway is made of controller and multiple TETRA transceivers, and TETRA intelligent radios gateway passes through aerial with peer-to-peer system Interface is connected, and each TETRA intelligent radios gateway requires that peer-to-peer system sets a base station for forwarding；TETRA intelligence nothings Gauze closes all information that can detect peer-to-peer system respective base station, and such as channel resource, whether channel occupies, and these are believed Breath report updates its corresponding data to bridge joint center；Bridge joint center and TETRA intelligent radio gateways coordinate this end system, complete User and a user of peer-to-peer system, the intercommunication for the business function for organizing user are handled in this end system, and business function mainly includes Individual calling, group are exhaled with short data etc..

TETRA transceivers number and the TETRA transceiver numbers of peer-to-peer system repeating base station are consistent, each The upstream frequency of the TETRA transceivers of TETRA intelligent radio gateways is set as peer-to-peer system repeating base station TETRA transceivers Downstream frequency, the downstream frequency of the TETRA transceivers of each TETRA intelligent radios gateway are set as peer-to-peer system repeating base station The upstream frequency of TETRA transceivers.TETRA intelligent radios gateway is connect with bridge joint center using IP/E1.

The side to be interconnected using the system of interconnecting between digital clustering communication system is realized based on air interface Method is as follows：

（1）Group exhales intercommunication

Step 2: TETRA intelligence of the bridge joint center by each intercommunication group of policy selections such as network management configuration or load dynamic allocation Energy radio network gateway, and the TETRA intelligent radios gateway for passing through selection initiates the group attachment of intercommunication group to peer-to-peer system repeating base station, Intercommunication group is adhered in the form of currently organizing, to ensure that peer-to-peer system can be to TETRA intelligent radio nets when there is the calling of intercommunication group Close the call signaling for sending intercommunication group；

Step 3: it is one of intercommunication group to set TG1；

（2）Individual calling intercommunication

Step 2:

Step 3:

（3）Short data intercommunication

a）Group address

Step 2: TETRA intelligence of the bridge joint center by each intercommunication group of policy selections such as network management configuration or load dynamic allocation Can radio network gateway, and pass through the TETRA intelligent radios gateway of selection the group of intercommunication group initiated to peer-to-peer system and adhere to, intercommunication group with The form attachment currently organized, to ensure that peer-to-peer system can be sent when there is the short data of intercommunication group to TETRA intelligent radios gateway；

Step 3: it is intercommunication group to set TG1

Step 4:

B) a address

Step 2:

Step 3:

The core adopted this method is using TETRA intelligent radios gateway as user registration in this end system to opposite end system In system, that is, TETRA intelligent radios gateway and neighbouring peer-to-peer system repeating base station look as pair as an entirety Thus user and the intercommunication of the business function of local terminal system user in peer-to-peer system are completed in the extension of end system.TETRA intelligence nothings User when gauze closes no call business（A user or group user）To monitor signaling on a control channel, once call setup into Work(, user is just assigned to the Traffic Channel of time slot identical with peer-to-peer system identical frequency up, it is achieved thereby that supporting simultaneously Multiway calling.Since TETRA intelligent radios gateway transceiver number and the transceiver number of opposite end repeating base station keep one Cause, thus calling maximum way be solely dependent upon peer-to-peer system channel resource number.

As shown in Fig. 2, digital clustering communication system includes terminal and system facility two parts, terminal is mainly hand platform, vehicle The mobile stations such as platform；System facility dispatches subsystem by base station sub-system, switching subsystem, nms subsystem, scheduler subsystem, GIS Compositions, wherein switching subsystem, nms subsystem, scheduler subsystem, the GIS scheduler subsystems such as system concentrate on control centre, and Base station is then located at the different geographical of the entire area of coverage in a manner that program and district covers.Switching subsystem 111, nms subsystem 112nd, scheduler subsystem 113, GIS scheduler subsystems 114 etc. constitute control centre 110.Pass through between base station and control centre One wireline interface 122 connects, and mobile station 101 is then communicated by air interface 121 with base station sub-system 102, whole so as to access A system.

This end system and peer-to-peer system intercommunication flow are mainly exhaled including group, the foundation of individual calling, maintenance and release, short data it is mutual Lead to, be described separately below.

1. group exhale foundation

Press the TETRA intelligent radio nets of each intercommunication group of policy selections such as network management configuration or load dynamic allocation in bridge joint center It closes, and passes through the TETRA intelligent radios gateway of selection the group of intercommunication group is initiated to peer-to-peer system and adhere to, intercommunication group is currently to organize Form is adhered to, to ensure that peer-to-peer system can send exhaling for intercommunication group when there is the calling of intercommunication group to TETRA intelligent radios gateway It is signaling；

If TG1 is one of intercommunication group, when peer-to-peer system there are TG1 groups to exhale, has call signaling and be sent to TETRA Intelligent radio gateway, TETRA intelligent radio gateways receive after group exhales, initiate TG1 groups to this end system through bridge joint center and exhale；

When there is TG1 groups to exhale in this end system, bridge joint center can receive TG1 callings, and TG1 callings are sent to TETRA Intelligent radio gateway, the latter initiate TG1 callings to the repeating base station of peer-to-peer system；

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

Group exhales Establishing process as follows：

（1）User's initiation group exhales flow under this end system

If intercommunication group is TG1, MS B initiations TG1 groups are exhaled under this end system, wherein there are one group call member MS A in opposite end System；After this end system receives U-SETUP signalings, send D-SETUP signalings and give bridge joint center, bridge center to virtual-number B Corresponding TETRA intelligent radios gateway sends this message, and TETRA intelligent radios gateway sends U-SETUP with Virtual User B identity Signaling sends D-SETUP signalings and is exhaled after receiving D-SETUP signalings into group to TG1, MS A to peer-to-peer system, peer-to-peer system；It is right End system sends D-CALL PROCEEDING signalings and D-CONNECT signalings to the TETRA intelligent radios where Virtual User B Gateway, TETRA intelligent radios gateway notice bridge joint center after both sides call all receives D-CONNECT signalings, and establish RTP and lead to Road transmits voice, channel of eating dishes without rice or wine is switched to identical for the Traffic Channel identical frequency of TG1 distribution with peer-to-peer system repeating base station The Traffic Channel of time slot gets on；

（2）User's initiation group exhales flow under peer-to-peer system

If intercommunication group is TG1, MS A initiations TG1 groups are exhaled under peer-to-peer system, and one of group membership B is in this end system； After peer-to-peer system receives U-SETUP signalings, TETRA intelligent radio gateway of the D-SETUP signalings to attachment TG1, TETRA intelligence are sent Can radio network gateway receive after to bridge joint center send call setup U-SETUP signalings, bridge joint center with user A ' identity forward U- SETUP signalings give this end system, this end system sends D-SETUP signalings and enters after receiving D-SETUP signalings to TG1, group membership B Group is exhaled；This end system sends D-CALL PROCEEDING and D-CONNECT signaling and gives bridge joint center, and bridge joint center turns them TETRA intelligent radio gateways are issued, after TETRA intelligent radio gateways receive D-CONNECT signalings, establish RTP channels transmission language Sound is switched to channel of eating dishes without rice or wine and industry of the peer-to-peer system repeating base station for the identical time slot of Traffic Channel identical frequency of TG1 distribution Business channel gets on.

2. individual calling is established

（1）User initiates individual calling flow under this end system

MS B initiate the individual calling of the MS A under peer-to-peer system under this end system, this end system receives U-SETUP signalings, if A is unregistered or local terminal system pages A is without response in this end system, and call setup D-SETUP is believed at local terminal systems exchange center Forward is enabled to bridge joint center, bridge joint center finds out that this is callings of the MS B to MS A, therefore to the TETRA where virtual-number B This message of intelligent radio gateway forwards；TETRA intelligent radios gateway sends U-SETUP signalings to opposite end with Virtual User B identity System, peer-to-peer system send D-SETUP signalings and give MS A；MS A, which are received, to be followed by then being sent U-CONNECT signalings to right by calling End system, peer-to-peer system send D-CONNECT signalings to the TETRA intelligent radio gateways where Virtual User B, TETRA intelligence Radio network gateway is believed after receiving to bridge joint center transmission U-CONNECT signalings, bridge joint center with user A ' identity forwarding U-CONNECT It enabling to this end system, this end system sends D-CONNECT signalings and gives MS B, sends D-CONNECT-ACK signalings and gives bridge joint center, This message is transmitted to TETRA intelligent radio gateways by bridge joint center（Residing for Virtual User B）, TETRA intelligent radio gateways receive After establish RTP channels transmission voice, channel of eating dishes without rice or wine is switched to the Traffic Channel same frequency distributed with peer-to-peer system repeating base station The Traffic Channel of the identical time slot of rate gets on；If MS A do not send D-RELEASE in peer-to-peer system or its refusal calling, peer-to-peer system To the TETRA intelligent radio gateways where Virtual User B, TETRA intelligent radio gateways are sent signaling after receiving to bridge joint center U-DISCONNECT signalings, bridge joint center forward U-DISCONNECT signalings to this end system, this end system with user A ' identity D-RELEASE signalings are sent to terminate to call to MS B；

（2）User initiates individual calling flow under peer-to-peer system

MS A initiate the individual calling to MS B under this end system under peer-to-peer system, after peer-to-peer system receives U-SETUP signalings, hair Sending D-SETUP signalings, TETRA intelligent radio gateways receive MS A to MS to the TETRA intelligent radio gateways where virtual-number B It after the calling of B, finds out that party A-subscriber is in peer-to-peer system from bridge joint center, U-SETUP signalings is sent to bridge joint center, in bridge joint The heart forwards this message with user's A ' identity；This end system transmission D-SETUP signalings are given MS B, MS B to receive and are followed by by calling then U-CONNECT signalings are sent to this end system, this end system sends D-CONNECT signalings and gives bridge joint center；Bridge joint center by this Message is transmitted to TETRA intelligent radio gateways（Residing for Virtual User B）, TETRA intelligent radios gateway is with Virtual User B identity hair Sending U-CONNECT signalings, peer-to-peer system sends D-CONNECT signalings and gives MS A, and send D-CONNECT-ACK to peer-to-peer system For signaling to the TETRA intelligent radio gateways where Virtual User B, bridge joint center forwards it to this end system, this end system hair D-CONNECT-ACK signalings is sent to give MS B；TETRA intelligent radio gateways establish RTP channels transmission voice, channel switching of eating dishes without rice or wine It is gone on to the Traffic Channel of the identical time slot of the Traffic Channel identical frequency distributed with peer-to-peer system repeating base station；If MS B are not at this End system or it refuse the calling, then this end system sends D-RELEASE signalings and gives bridge joint center, and bridge joint center is by this message It is transmitted to TETRA intelligent radio gateways（Residing for Virtual User B）, TETRA intelligent radios gateway is with Virtual User B identity transmission U- To peer-to-peer system, peer-to-peer system sends D-RELEASE signalings to be terminated to call DISCONNECT signalings to MS A.

3. group exhale maintenance

(1) local terminal system PTT operates

A) user PTT asks flow under this end system

If intercommunication group is TG1, MS B press PTT under this end system, send U-TX-DEMAND signalings to this end system, sheet End system sends D-TX-GRANTED（granted to another）Signaling gives bridge joint center, and bridge joint center finds out that this is MS B The PTT of TG1 is asked, therefore to corresponding this message of TETRA intelligent radios gateway forwards of virtual-number B, TETRA intelligent radios Gateway sends U-TX-DEMAND signalings to peer-to-peer system with Virtual User B identity, and peer-to-peer system sends D-TX- after receiving GRANTED（granted to another）Signaling is to TG1；

When MS A are talking under peer-to-peer system, this end system MS B press PTT and seize Launch Right, this end system receives U- After TX-DEMAND signalings, send D-TX-INTERRUPT (granted to another) signaling and give bridge joint center, bridge center Find out that this is MS B and the PTT of TG1 is asked, therefore to TETRA intelligent radios gateway forwards this message where virtual-number B, TETRA intelligent radios gateway sends U-TX-DEMAND signalings to peer-to-peer system with Virtual User B identity, after peer-to-peer system receives D-TX-INTERRUPT (granted to another) signaling is sent to TG1；

B) user PTT discharges flow under this end system

If intercommunication group is TG1, MS B are talking under this end system, and speech terminates to unclamp PTT, sends U-TX-CEASED Signaling gives this end system, this end system sends D-TX-CEASED signalings and gives bridge joint center, and bridge joint center finds out that this is MS B couple The PTT release requests of TG1, therefore to TETRA intelligent radios gateway forwards this message where virtual-number B, TETRA intelligence nothings Gauze is closed sends U-TX-CEASED signalings to peer-to-peer system with Virtual User B identity, and peer-to-peer system sends D-TX- after receiving CEASED signalings are to TG1；

（2）Peer-to-peer system PTT is operated

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

If intercommunication group is TG1, currently during unmanned speech, MS A press PTT under peer-to-peer system, ask Launch Right；Opposite end system After system receives U-TX-DEMAND signalings, D-TX-GRANTED (granted to another) signaling is sent to attachment TG1's TETRA intelligent radio gateways, TETRA intelligent radio gateways receive MS A and the PTT of TG1 are asked, and party A-subscriber is found out from bridge joint center In peer-to-peer system, U-TX-DEMAND signalings are sent to bridge joint center, bridge joint center forwards this message with user's A ' identity, This end system sends D-TX-GRANTED after receiving（granted to another）Signaling is to TG1；

When MS B are talking under this end system, peer-to-peer system MS A press PTT, seize Launch Right；Peer-to-peer system is received To after U-TX-DEMAND signalings, D-TX-INTERRUPT (granted to another) signaling is sent to attachment TG1's TETRA intelligent radio gateways, TETRA intelligent radio gateways receive MS A and the PTT of TG1 are asked, and party A-subscriber is found out from bridge joint center In peer-to-peer system, U-TX-DEMAND signalings are sent to bridge joint center, bridge joint center forwards this message with user's A ' identity, This end system sends D-TX-INTERRUPT after receiving（granted to another）Signaling is to TG1；

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

MS A are talking under peer-to-peer system, and speech terminates to unclamp PTT；It sends U-TX-CEASED signalings and gives opposite end system System, peer-to-peer system send TETRA intelligent radio gateway of the D-TX-CEASED signalings to attachment TG1, TETRA intelligent radio gateways It receives MS A and request is discharged to the PTT of TG1, find out that MS A are in peer-to-peer system from bridge joint center, U- is sent to bridge joint center TX-CEASED signalings, bridge joint center forward this message, this end system to send D-TX-CEASED letters after receiving with user's A ' identity It enables to TG1.

4. individual calling is safeguarded

（1）Local terminal system PTT operates

A) user PTT asks flow under this end system

MS B press PTT under this end system, send U-TX-DEMAND signalings to this end system, this end system sends D-TX- GRANTED（granted to another）Signaling gives bridge joint center, and bridge joint center finds out that this is that MS B please to the PTT of MS A It asks, therefore to TETRA intelligent radios gateway forwards this message where virtual-number B, TETRA intelligent radios gateway is virtually to use Family B identity sends U-TX-DEMAND signalings to peer-to-peer system, and peer-to-peer system sends D-TX-GRANTED after receiving（granted to another）Signaling gives MS A；

When MS A are talking under peer-to-peer system, this end system MS B press PTT and seize Launch Right, this end system receives U- After TX-DEMAND signalings, send D-TX-INTERRUPT (granted to another) signaling and give bridge joint center, bridge center Find out that this is MS B and the PTT of MS A is asked, therefore to TETRA intelligent radios gateway forwards this message where virtual-number B, TETRA intelligent radios gateway sends U-TX-DEMAND signalings to peer-to-peer system with Virtual User B identity, after peer-to-peer system receives It sends D-TX-INTERRUPT (granted to another) signaling and gives MS A；

B) user PTT discharges flow under this end system

MS B are talking under this end system, and speech terminates to unclamp PTT, send U-TX-CEASED signalings to this end system, This end system sends D-TX-CEASED signalings and gives bridge joint center, and bridge joint center finds out that this is that MS B please to the PTT releases of MS A It asks, therefore to TETRA intelligent radios gateway forwards this message where virtual-number B, TETRA intelligent radios gateway is virtually to use Family B identity sends U-TX-CEASED signalings to peer-to-peer system, and peer-to-peer system sends D-TX-CEASED signalings after receiving and gives MS A；

（2）Peer-to-peer system PTT is operated

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

During current unmanned speech, MS A press PTT under peer-to-peer system, ask Launch Right；Peer-to-peer system receives U-TX- After DEMAND signalings, D-TX-GRANTED (granted to another) signaling is sent to the TETRA intelligence where virtual-number B Can radio network gateway, TETRA intelligent radio gateways receive MS A and the PTT of MS B are asked, and find out that party A-subscriber is in pair from bridge joint center In end system, U-TX-DEMAND signalings are sent to bridge joint center, bridge joint center forwards this message, local terminal system with user's A ' identity System sends D-TX-GRANTED after receiving（granted to another）Signaling gives MS B；

When MS B are talking under this end system, peer-to-peer system MS A press PTT, seize Launch Right；Peer-to-peer system is received To after U-TX-DEMAND signalings, D-TX-INTERRUPT (granted to another) signalings are sent to where virtual-number B TETRA intelligent radio gateways, TETRA intelligent radio gateways receive MS A and the PTT of MS B are asked, and A is found out from bridge joint center User is in peer-to-peer system, sends U-TX-DEMAND signalings to bridge joint center, bridge joint center forwards this to disappear with user's A ' identity Breath, this end system send D-TX-INTERRUPT after receiving（granted to another）Signaling gives MS B；

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

MS A are talking under peer-to-peer system, and speech terminates to unclamp PTT；It sends U-TX-CEASED signalings and gives opposite end system System, peer-to-peer system send D-TX-CEASED signalings to the TETRA intelligent radio gateways where virtual-number B, TETRA intelligence nothings Gauze pass receives MS A and discharges request to the PTT of MS B, finds out that MS A are in peer-to-peer system from bridge joint center, to bridge joint center U-TX-CEASED signalings are sent, bridge joint center forwards this message, this end system to send D-TX- after receiving with user's A ' identity CEASED signalings give MS B.

5. group exhale release

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

If intercommunication group is TG1, MS B call releases under this end system send U-DISCONNECT signalings to this end system, It is exhaled if local terminal systems exchange center allows MS B to hang up the group, sends D-RELEASE signalings and give bridge joint center；Bridge joint center is looked into Bright this is call release requests of the MS B to TG1, therefore this disappears to the TETRA intelligent radios gateway forwards where virtual-number B Breath, TETRA intelligent radios gateway send U-DISCONNECT signalings to peer-to-peer system with Virtual User B identity, and peer-to-peer system is received If to rear permission call release, D-RELEASE signalings are sent to TG1；

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

MS A drop calls under peer-to-peer system send U-DISCONNECT signalings to peer-to-peer system, and peer-to-peer system sends D- RELEASE signalings receive the call release of MS A to the TETRA intelligent radio gateways for adhering to TG1, TETRA intelligent radio gateways Request, finds out that party A-subscriber is in peer-to-peer system from bridge joint center, sends U-DISCONNECT signalings to bridge joint center, bridges center This message is forwarded to this end system with user's A ' identity, this end system sent if call release is allowed D-RELEASE signalings to TG1。

6. individual calling discharges

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

MS B call releases under this end system send U-DISCONNECT signalings to this end system, this end system sends D- RELEASE signalings give bridge joint center；Bridge joint center finds out that this is call release requests of the MS B to MS A, therefore to virtual-number TETRA intelligent radios gateway forwards this message where B, TETRA intelligent radios gateway send U- with Virtual User B identity To peer-to-peer system, peer-to-peer system sends D-RELEASE signalings after receiving and gives MS A DISCONNECT signalings；

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

MS A drop calls under peer-to-peer system send U-DISCONNECT signalings to peer-to-peer system, and peer-to-peer system sends D- RELEASE signalings receive releasing for MS A to the TETRA intelligent radio gateways where virtual-number B, TETRA intelligent radio gateways Call request is put, finds out that party A-subscriber is in peer-to-peer system from bridge joint center, U-DISCONNECT signalings, bridge are sent to bridge joint center It connects center and this message is forwarded to this end system with user's A ' identity, this end system sends D-RELEASE signalings and gives MS B.

7. short data intercommunication flow

Short data intercommunication flow mainly includes status message, Type1-3 or Type4 without transport layer short data, Type4 transmission Layer short data intercommunication；

（1）User sends status message to peer-to-peer system flow under this end system

A) group address

If intercommunication group is TG1, MS B send status message to TG1 under this end system, this end system receives U-STATUS After (pre-coded status), send D-STATUS (pre-coded status) signaling and give bridge joint center, bridge joint center is looked into Bright this is status messages of the MS B to TG1, therefore to TETRA intelligent radios gateway forwards this message where virtual-number B, TETRA intelligent radios gateway sends U-STATUS (pre-coded status) signalings to peer-to-peer system with Virtual User B identity, Peer-to-peer system sends D-STATUS (pre-coded status) signaling to TG1 after receiving；Peer-to-peer system switching centre sends D- STATUS（acknowledgement）Signaling is to the TETRA intelligent radio gateways where virtual-number B, TETRA intelligent radio nets After pass receives, U-STATUS is sent to bridge joint center（acknowledgement）Signaling, bridge joint center are not handled after receiving；Cause To be group address status message, local terminal systems exchange center can issue D-STATUS（acknowledgement）Signaling gives MS B, Without waiting for the report that bridge joint center comes；

B) a address

MS B send status message to MS A under peer-to-peer system under this end system；This end system receives U-STATUS (pre- Coded status) after, if A, this system is unregistered or this system paging A is without response, local terminal systems exchange center will For D-STATUS (pre-coded status) forwards to the center that bridges, bridge joint center finds out that this is that MS B disappear to the state of MS A Breath, therefore to TETRA intelligent radios gateway forwards this message where virtual-number B, TETRA intelligent radios gateway is virtually to use Family B identity sends U-STATUS (pre-coded status) signaling to peer-to-peer system, and peer-to-peer system sends D- after receiving STATUS (pre-coded status) signaling gives MS A；Peer-to-peer system switching centre sends D-STATUS （acknowledgement）Signaling is received to the TETRA intelligent radio gateways where virtual-number B, TETRA intelligent radio gateways Afterwards, it finds out that party A-subscriber is in peer-to-peer system from bridge joint center, U-STATUS is sent to bridge joint center（acknowledgement）Letter It enables, bridge joint center forwards this message to this end system, this end system transmission D-STATUS with user's A ' identity （acknowledgement）Signaling gives MS B；

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

A) group address

If intercommunication group is TG1, MS A send status message and send U-STATUS to TG1, MS A under peer-to-peer system（pre- coded status）Signaling sends D-STATUS to peer-to-peer system, peer-to-peer system（pre-coded status）Signaling is to attachment The TETRA intelligent radio gateways of TG1, TETRA intelligent radio gateways receive status messages of the MS A to TG1, are looked into from bridge joint center Bright party A-subscriber is in peer-to-peer system, and U-STATUS is sent to bridge joint center（pre-coded status）Signaling, bridge joint center with User's A ' identity forwards this message to this end system；This end system sends D-STATUS（pre-coded status）Signaling is given TG1, local terminal systems exchange center send D-STATUS（acknowledgement）Give bridge joint center, bridge joint center receive after not Processing；Because being group address status message, peer-to-peer system switching centre can issue D-STATUS（acknowledgement）Signaling MS A are given, without waiting for the report that bridge joint center comes；

B) a address

MS A send status message and send U-STATUS to this end system MS B, MS A under peer-to-peer system（pre-coded status）Signaling sends D-STATUS to peer-to-peer system, peer-to-peer system（pre-coded status）Signaling gives virtual-number B institutes TETRA intelligent radio gateways, TETRA intelligent radio gateways receive status messages of the MS A to MS B, are looked into from bridge joint center Bright party A-subscriber is in peer-to-peer system, and U-STATUS is sent to bridge joint center（pre-coded status）Signaling, bridge joint center with User's A ' identity forwards this message to this end system；This end system sends D-STATUS（pre-coded status）Signaling is to MS B, local terminal systems exchange center send D-STATUS（acknowledgement）Bridge joint center is given, bridge joint center finds out that this is pair The status message ACK of MS A, bridge joint center is to TETRA intelligent radios gateway forwards this message where virtual-number B, TETRA Intelligent radio gateway sends U-STATUS (acknowledgement) signalings to peer-to-peer system, opposite end system with Virtual User B identity System sends D-STATUS (acknowledgement) signalings after receiving and gives MS A；

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

Type1:User is allowed to define short data content as 16bit long；

Type2:User is allowed to define short data content as 32bit long；

Type3:User is allowed to define short data content as 64bit long；

Type4:The Protocol identifier of a 8bit are defined, and define short data content as 0-2039bit It is long；Type4 is divided into as two types, no transport layer data and transport layer data, and difference is transport layer data in data content Methodology is defined for providing enhancement layer 3 data service, including end-to-end response, the functions such as storage forwarding；

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

A) group address

If intercommunication group is TG1, MS B send Type1-3 or Type4 without transport layer short data to TG1, sheet under this end system After end system receives U-SDS-DATA signalings, send D-SDS-DATA signalings and give bridge joint center, bridge joint center finds out that this is MS B To the short data of TG1, therefore to TETRA intelligent radios gateway forwards this message where virtual-number B, TETRA intelligent radios Gateway sends U-SDS-DATA signalings to peer-to-peer system with Virtual User B identity, and peer-to-peer system sends D-SDS-DATA after receiving Signaling is to TG1；

B) a address

MS B send Type1-3 or Type4 without MS A under transport layer short data to peer-to-peer system, local terminal system under this end system After system receives U-SDS-DATA signalings, if A is this system is unregistered or this system pages A without response, local terminal systems exchange By D-SDS-DATA forwards to the center that bridges, bridge joint center finds out that this is short data of the MS B to MS A at center, therefore to virtual TETRA intelligent radios gateway forwards this message where number B, TETRA intelligent radios gateway send U- with Virtual User B identity To peer-to-peer system, peer-to-peer system sends D-SDS-DATA signalings after receiving and gives MS A SDS-DATA signalings；

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

A) group address

If intercommunication group is TG1, MS A send Type1-3 or Type4 without transport layer short data to TG1 under peer-to-peer system, right After end system receives U-SDS-DATA signalings, TETRA intelligent radio gateway of the D-SDS-DATA signalings to attachment TG1 is sent, TETRA intelligent radio gateways receive the short data of MS A, find out that party A-subscriber is in peer-to-peer system from bridge joint center, to bridge joint center This message is forwarded to this end system with user's A ' identity, this end system sends D-SDS-DATA signalings to TG1 after receiving；

B) a address

MS A send Type1-3 or Type4 without MS B under transport layer short data to this end system, opposite end system under peer-to-peer system After system receives U-SDS-DATA signalings, D-SDS-DATA signalings are sent to the TETRA intelligent radio gateways where virtual-number B, TETRA intelligent radio gateways receive the short data of MS A, find out that party A-subscriber is in peer-to-peer system from bridge joint center, to bridge joint center This message is forwarded to this end system with user's A ' identity, this end system sends D-SDS-DATA signalings after receiving and gives MS B；

（5）User sends Type4 transport layers short data to peer-to-peer system flow under this end system

A) group address

If intercommunication group is TG1, MS B send Type4 transport layers short data to TG1 under this end system, this end system receives U- After SDS-DATA (TRANSFER) signaling, send D-SDS-DATA (TRANSFER) signalings and give bridge joint center, bridge joint center is found out This is short data of the MS B to TG1, therefore to TETRA intelligent radios gateway forwards this message where virtual-number B, TETRA Intelligent radio gateway sends U-SDS-DATA (TRANSFER) signalings to peer-to-peer system, peer-to-peer system hair with Virtual User B identity D-SDS-DATA (TRANSFER) signaling is sent to TG1；Peer-to-peer system switching centre sends D-SDS-DATA（Report, message received）Signaling is received to the TETRA intelligent radio gateways where virtual-number B, TETRA intelligent radio gateways Afterwards, U-SDS-DATA is sent to bridge joint center（Report, message received）Signaling, bridge joint center are not located after receiving Reason；Because being group address short data, local terminal systems exchange center can issue D-SDS-DATA（Report, message received）Signaling gives MS B, withouts waiting for the report that bridge joint center comes；

B) a address

MS B send Type4 transport layers short data and receive U- to MS A, this end system under peer-to-peer system under this end system After SDS-DATA (TRANSFER) signaling, if A, this system is unregistered or this system paging A is without response, this end system is handed over By D-SDS-DATA (TRANSFER) forwards to the center that bridges, bridge joint center finds out that this is short numbers of the MS B to MS A for switching center9 According to therefore to TETRA intelligent radios gateway forwards this message where virtual-number B, TETRA intelligent radios gateway is virtually to use Family B identity sends U-SDS-DATA (TRANSFER) signalings to peer-to-peer system, and peer-to-peer system sends D-SDS-DATA (TRANSFER) signaling gives MS A；U-SDS-DATA is sent if short data requires reply report and MS A have received（Report, message received）Signaling sends D-SDS-DATA to peer-to-peer system, peer-to-peer system（Report, message received）Signaling receives the report of MS A to the TETRA intelligent radio gateways where virtual-number B, TETRA intelligent radio gateways It accuses, finds out that party A-subscriber be in peer-to-peer system from bridge joint center, bridge center and this message is forwarded to this end system with user's A ' identity, This end system sends D-SDS-DATA（Report, message received）Signaling gives MS B；If report is replied in short data requirement It accuses but MS A does not receive or reply report failure, then peer-to-peer system switching centre sends D-SDS-DATA after waiting for report time-out (Report, transfer failed) is to the TETRA intelligent radio gateways where virtual-number B, TETRA intelligent radio gateways The report for receiving failure finds out that party A-subscriber is in peer-to-peer system from bridge joint center, and bridge joint center forwards this message with user's A ' identity To this end system, this end system sends D-SDS-DATA（Report, transfer failed）Signaling gives MS B.

（6）User sends Type4 transport layers short data to local terminal system flow under peer-to-peer system

A) group address

MS A send Type4 transport layers short data to TG1 under peer-to-peer system, and peer-to-peer system receives U-SDS-DATA (TRANSFER) after signaling, TETRA intelligent radio gateway of D-SDS-DATA (TRANSFER) signaling to attachment TG1 is sent, TETRA intelligent radio gateways receive 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-DATA (TRANSFER) signaling is sent to bridge joint center, bridge joint center forwards this message to local terminal with user's A ' identity System；This end system sends D-SDS-DTATA (TRANSFER) signalings to TG1, and local terminal systems exchange center sends D-SDS- DATA（Report, message received）Bridge joint center is given, bridge joint center is not handled after receiving；Because it is that group address is short Data, peer-to-peer system switching centre can issue D-SDS-DATA（Report, message received）Signaling gives MS A, no Need the report that bridge joint center is waited for come；

B) a address

MS A send Type4 transport layers short data to MS B under this end system under peer-to-peer system, and peer-to-peer system receives U- After SDS-DATA (TRANSFER) signaling, D-SDS-DATA (TRANSFER) signalings are sent to the TETRA intelligence where virtual-number B Energy radio network gateway, TETRA intelligent radio gateways receive the Type4 transport layer short data of MS A, are found out at party A-subscriber from bridge joint center In peer-to-peer system, U-SDS-DTATA (TRANSFER) signaling is sent to bridge joint center, bridge joint center is forwarded with user A ' identity This message gives this end system, this end system sends D-SDS-DTATA (TRANSFER) signalings and gives MS B, if short data requirement is replied It reports and MS B has received, send U-SDS-DTATA (Report, message received) signaling to this end system, bridge The center of connecing finds out that this is reports of the MS B to MS A, therefore this disappears to the TETRA intelligent radios gateway forwards where virtual-number B Breath, TETRA intelligent radios gateway sends U-SDS-DATA (Report, message received) with Virtual User B identity to be believed It enables to peer-to-peer system, peer-to-peer system sends D-SDS-DATA (Report, message received) signaling and gives MS A；It is if short Data demand replys report but MS B do not receive or reply report failure, then after local terminal systems exchange center waits for report time-out It sends D-SDS-DATA (Report, transfer failed) and gives bridge joint center, bridge joint center is where virtual-number B This message of TETRA intelligent radios gateway forwards, TETRA intelligent radios gateway send U-SDS-DATA with Virtual User B identity (Report, transfer failed) signaling to peer-to-peer system, peer-to-peer system send D-SDS-DATA (Report, Transfer failed) signaling gives MS A.

Annotation：

MS:Mobile Station mobile stations；

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

GIS:Geographic Information System GIS-Geographic Information System；

RTP:Real-time Transport Protocol real-time transport protocol；

Peer-to-peer system：I.e. original system, it is desirable to the system being interconnected；

This end system：The system newly added in, it is desirable to the system interconnected with peer-to-peer system；

call id:Call identifier are used as calling participant and between exchanging about unique mark that this is called Know；

PTT:Push to talk, which are pressed, to be said, PTT operations refer to press or unclamp PTT operations；PTT requests, which refer to, presses PTT is operated, and PTT releases, which refer to, unclamps PTT operations；

granted to another:License to other sides；

pre-coded status：Precoding state；

acknowledgement:Response；

Protocol identifier:Protocol-identifier；

TRANSFER：Transmit data；

Report, message received:Short number it was reported that, expression received；

Report,transfer failed：Short number it was reported that, represent transmission failure；

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

U-CONNECT:Called terminal issues the call answering signaling of system facility, and instruction terminal is ready for connecting；

U-TX-DEMAD:Terminal issues the PTT demand signallings of system facility；

U-TX-CEASED:Terminal issues the PTT release signalings 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：The instruction that system facility issues calling terminal calls signaling in progress；

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

D-CONNECT:Signaling is connected in the calling that system facility issues calling terminal；

D-CONNECT-ACK:Signaling is connected in the calling that system facility issues called terminal；

D-TX-GRANTED:System facility issues the Launch Right signaling of terminal, and Launch Right is authorized or awarded to authorize or refusing It weighs and gives its other party；

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

D-TX-INTERRUPT：The Launch Right that system facility issues terminal has been preempted signaling；

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

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 has the following advantages that：

1st, in the case of the interface of not open system, two different digitals are realized by existing standard air interface Intercommunication between group system, interworking service include individual calling（Full duplex, half-duplex）, group exhales, short data intercommunication etc.；

2nd, networking equipment is flexible, is accessible to any one base station of peer-to-peer system, is not required to do peer-to-peer system any operation.

It should be understood that the angle described above from specific embodiment further drapes over one's shoulders the technology contents of the present invention Dew, its object is to which everybody is allowed to be easier to understand present disclosure, but does not represent embodiments of the present invention and rights protection It is confined to this.The scope of the present invention is illustrated in the appended claims, every aobvious and easy within spirit of the invention The modification seen also should be attributed within the protection of the present invention.

Claims

1. the system that interconnects between digital clustering communication system is realized based on air interface, it is characterised in that be including bridge joint System realizes interconnecting for this end system and peer-to-peer system by bridge system, and bridge system is by bridging center, one or more TETRA intelligent radios gateway forms, and bridge joint center selects each intercommunication group by network management configuration or load dynamic allocation scheme TETRA intelligent radio gateways, and the TETRA intelligent radios gateway for passing through selection initiates the group attachment of intercommunication group to peer-to-peer system, Intercommunication group is adhered in the form of currently organizing, to ensure that peer-to-peer system can be to TETRA intelligent radio nets when there is the calling of intercommunication group Close the call signaling for sending intercommunication group；TETRA intelligent radios gateway is made of controller and multiple TETRA transceivers, TETRA Intelligent radio gateway is connected with peer-to-peer system by air interface, and each TETRA intelligent radios gateway requires that peer-to-peer system is set A base station is put for forwarding；Bridge joint center and TETRA intelligent radio gateways coordinate this end system, complete user in this end system A user with peer-to-peer system, organize user business function intercommunication processing, business function mainly includes that individual calling, group is exhaled and short number According to.

2. the system that interconnects according to claim 1 realized based on air interface between digital clustering communication system, TETRA transceivers number and the TETRA transceiver numbers of peer-to-peer system repeating base station described in being characterized in that are consistent, The upstream frequency of the TETRA transceivers of each TETRA intelligent radio gateways is set as peer-to-peer system repeating base station TETRA transmitting-receiving letters The downstream frequency of machine, the downstream frequency of the TETRA transceivers of each TETRA intelligent radios gateway are set as peer-to-peer system forwarding base It stands the upstream frequencies of TETRA transceivers.

3. a kind of system that interconnects using between the realization digital clustering communication system described in claim 1 based on air interface The method to interconnect, it is characterised in that the method to interconnect is as follows：

（1）Group exhales intercommunication

Step 2: bridge joint center is selected the TETRA intelligent radios of each intercommunication group by network management configuration or load dynamic allocation scheme Gateway, and the TETRA intelligent radios gateway for passing through selection initiates the group attachment of intercommunication group, intercommunication group to peer-to-peer system repeating base station Adhered in the form of currently organizing, to ensure that peer-to-peer system can be sent when there is the calling of intercommunication group to TETRA intelligent radios gateway The call signaling of intercommunication group；

Step 3: it is one of intercommunication group to set TG1；

When there is TG1 groups to exhale in this end system, bridge joint center can receive TG1 callings, and TG1 callings are passed through TETRA intelligence Radio network gateway initiates TG1 callings to peer-to-peer system repeating base station, and after the success of peer-to-peer system call setup, repeating base station can distribute one A Traffic Channel, channel allocation information of the TETRA intelligent radios gateway in the peer-to-peer system call set up signaling received, Channel be switched to opposite end repeating base station for the identical time slot of Traffic Channel identical frequency of TG1 distribution Traffic Channel up, Both sides calling is docked successfully；

It is right since TETRA intelligent radios gateway has carried out a group attachment to peer-to-peer system when peer-to-peer system has TG1 groups to exhale End system repeating base station has call signaling and is sent to TETRA intelligent radio gateways, and TETRA intelligent radios gateway is through bridging center TG1 groups are initiated to this end system to exhale；TETRA intelligent radios gateway is simultaneously according to the channel point received in peer-to-peer system call signaling With information, channel of eating dishes without rice or wine is switched to the identical time slot of Traffic Channel identical frequency with peer-to-peer system repeating base station for TG1 distribution Traffic Channel get on；After local terminal system calling is successfully established, success is just docked in the calling on both sides；

Step 4: after this end system and peer-to-peer system calling docking are got up, both sides can converse in respective Traffic Channel；

（2）Individual calling intercommunication

Step 1: when intercommunication user's registration is to this end system, bridges and obtained centrally through reception local terminal systems exchange center notice Know that the user is entered in this end system, if the user is A, bridge joint center selects some TETRA intelligent radio net using A numbers It closes to peer-to-peer system and initiates to register；

Step 2:

A-1, when local terminal system user call peer-to-peer system user when, if called subscriber is unregistered in this end system, Huo Zheben End system paging is called without response, and by Call Forwarding to center is bridged, bridging should centrally through selection at local terminal systems exchange center The TETRA intelligent radios gateway of intercommunication user's registration initiates to call to peer-to-peer system repeating base station；

A-2, when peer-to-peer system user call local terminal system user when, since intercommunication user has been registered to peer-to-peer system, phase The TETRA intelligent radios gateway answered can receive the call signaling of peer-to-peer system, and TETRA intelligent radios gateway is through bridging center to originally End system initiates calling；

Step 3:

In a-1, it is called after connecting to send to call to TETRA intelligent radios gateway and connects signaling, TETRA intelligent radio nets The channel allocation information connected according to the peer-to-peer system calling received in signaling is closed, it is identical that channel of eating dishes without rice or wine is switched to peer-to-peer system The Traffic Channel of the identical time slot of frequency gets on, and calling is connected signaling and issues user under this end system through bridge joint center, in this way The calling on both sides is docked successfully；

In a-2, it is called this end system after connecting and sends calling connection signaling, TETRA intelligence to TETRA intelligent radios gateway Energy radio network gateway is already prepared to the response signaling of call establishment to the transmission of peer-to-peer system repeating base station, and peer-to-peer system calling is connected Afterwards, it sends calling connection signaling and gives TETRA intelligent radio gateways, TETRA intelligent radios gateway is exhaled according to the peer-to-peer system received The channel allocation information connected in signaling is, channel of eating dishes without rice or wine is switched to the Traffic Channel of the identical time slot of peer-to-peer system identical frequency Up, success is just docked in the calling on such both sides；

（3）Short data intercommunication

a）Group address

Step 2: bridge joint center is selected the TETRA intelligent radios of each intercommunication group by network management configuration or load dynamic allocation scheme Gateway, and the TETRA intelligent radios gateway for passing through selection initiates the group attachment of intercommunication group to peer-to-peer system, intercommunication group is with current group Form attachment, to ensure that peer-to-peer system can be sent when there is the short data of intercommunication group to TETRA intelligent radios gateway；

Step 3: it is intercommunication group to set TG1

User sends TG1 group short data under b-1, this end system, and bridge joint center can receive TG1 short data, and TG1 short data is led to It crosses TETRA intelligent radios gateway to send to peer-to-peer system repeating base station, peer-to-peer system can send short data and use to TG1 groups after receiving Family；

User sends TG1 group short data under b-2, peer-to-peer system, after TETRA intelligent radio gateways receive, through bridging center to originally End system initiates the group short data of TG1, this end system can send short data and give TG1 group users after receiving；

Step 4:

In b-1, peer-to-peer system can send short number and be reported to corresponding TETRA intelligent radios gateway, TETRA intelligence simultaneously Energy radio network gateway forwards it to bridge joint center, and bridge joint center is not handled after receiving；Because it is a group short data, local terminal systems exchange Center can issue short number and be reported to sender, without waiting for the report that bridge joint center comes；

In b-2, local terminal systems exchange center can send short number and be reported to bridge joint center simultaneously, after bridge joint center receives It does not handle；Because being a group short data, peer-to-peer system switching centre can issue short number and be reported to sender, without waiting for bridging The report that center comes；

B) a address

Step 1: when intercommunication user's registration is to this end system, bridges and obtained centrally through reception local terminal systems exchange center notice Know that the user is linked into this end system, which is set as A, and bridge joint center selects a TETRA intelligent radio net using A numbers It closes to peer-to-peer system and initiates to register；

Step 2:

When c-1, this end system send short data to peer-to-peer system user, if recipient is unregistered in this end system, Huo Zheben End system paging is called without response, and local terminal systems exchange center to center is bridged, bridges short data forward centrally through selection The TETRA intelligent radios gateway of the intercommunication user's registration sends short data to peer-to-peer system repeating base station；

When c-2, peer-to-peer system user send short data to local terminal system user, since intercommunication user has been noted to peer-to-peer system Volume, corresponding TETRA intelligent radios gateway can receive short data, and TETRA intelligent radios gateway is through bridging center to this end system Send short data；

Step 3:

In c-1, if report is replied in short data requirement and recipient has replied report, peer-to-peer system switching centre will For the short number received it was reported that issuing TETRA intelligent radio gateways, TETRA intelligent radios gateway issues this end system through bridge joint center Lower sender；If report is replied in short data requirement but recipient does not reply report, recipient does not receive or replys report Failure, the then short number that failure is sent after peer-to-peer system switching centre waiting report time-out are reported to TETRA intelligent radio gateways, TETRA intelligent radios gateway issues this end system through bridge joint center and issues the side of sending；

In c-2, if report is replied in short data requirement and recipient has replied report, the center of bridge joint receives local terminal system It unites after the report of switching centre, corresponding TETRA intelligent radios gateway is selected to send the report to sender to peer-to-peer system；If Short data needs to reply report but recipient does not reply report, and recipient does not receive or reply report failure, then local terminal system System switching centre sends failure short number after waiting for report overtime is reported to bridge joint center, and the selection of bridge joint center is corresponding TETRA intelligent radio gateways issue peer-to-peer system sender.