CN101094526B

CN101094526B - Method for implementing roaming through code division multiple access digital cluster tradition type group calls

Info

Publication number: CN101094526B
Application number: CN2007101297053A
Authority: CN
Inventors: 朱进磊; 宋莉; 王芳
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2007-07-24
Filing date: 2007-07-24
Publication date: 2011-10-26
Anticipated expiration: 2027-07-24
Also published as: CN101094526A; WO2009012629A1

Abstract

The invention discloses a method for realizing roaming in traditional group call of code division multiple access digital trunking, including enhanced paging and traditional call, wherein, the main control trunking system is introduced into the traditional group call of code division multiple access digital trunking Enhanced paging mode, the non-roaming users in the home place will join the cluster group call in the traditional way, and the calling users roaming in the visiting place and other group members except the caller will join the traditional group call in the enhanced way group call. The method can make full use of the characteristics of the system by performing enhanced paging to the roaming user in the traditional call, meet the requirements of the mobility of the user and the call of the whole network, and reduce the resource occupation of the roaming cell at the same time.

Description

A kind of code division multiple access digital cluster traditional group call is realized the method for roaming

Technical field

The present invention relates to moving communicating field, relate in particular to the method that a kind of CDMA (code division multiple access) traditional packet digital calling is realized roaming.

Background technology

Mobile communication technology has developed into the third generation, wherein trunking communication becomes a kind of indispensable communication traffic day by day, trunking communication is meant a kind of dispatching communication mode of special use, comprise special-purpose commander and dispatching communication, in use cluster user can add calling simultaneously, and conversation is carried out with single worker or half-duplex mode.

The method of existing C DMA digital cluster system calling procedure control, mainly contain two kinds: a kind of method is when carrying out trunked call, for each cluster user terminal is distributed air traffic channel separately, user terminal is by the paging mode by existing CDMA2000 1X normal voice calls, promptly press IMSI (International Mobile Subscriber Identity, international travelling carriage identification code) paging goes into to call out, and to insert when calling out what be that the terminal distribution channel also adopts in terminal be the channel allocation mode of normal voice calls.Therefore this trunked call can be broken through geological restraint in the mode of independent allocated channel, realizes roaming function, shows differently with existing professional trunked call, is referred to as the enhanced group calling in the literary composition.By this group calling mode, its channel resource of eating dishes without rice or wine takies relevant with the group user number, and establishing number of users is N, and then channel uses number to be 2N+1.In addition, this enhanced group calling is by IMSI mode (enhanced) paging in call establishment, and user terminal is paged singly to be gone into to call out, and has inevitably increased the call proceeding time.Therefore, adopt the control mode of this group calling, interface-free resources take linear growth with N, connecting time is long, and it is many to take resource, finite capacity, especially in the concentrated place of group user, as megaevent, need insert a large number of users simultaneously, the group calling mode of this enhanced just can not reach requirement.

Another kind method is when carrying out trunked call, network side all base station controllers in this group scheduling service area send and carry group id (GID, Group ID) paging request, after base station controller is received described paging request, notify its shared forward traffic channel and shared reverse traffic channel of all transceivers foundation down, simultaneously base station controller is set up successfully afterwards on paging channel the periodicity broadcast transmission with the beep-page message of group id addressing at wireless channel, the terminal that belongs to this group is according to the information in the beep-page message, be captured as the upright forward traffic channel of this establishment, automatically in the access group.This calling is referred to as traditional group call in the text.

This traditional group call is to adopt the Channel Sharing mode on the mode of channel resource allocation, has solved restriction of digital cluster system cell capacity and the problem of call proceeding time.But, adopt this group calling mode, for fear of waste of radio resources, shared channel resource is to be based upon in limited several sub-districts, is unsupported for this method of calling of roamer, can't satisfy certain user's mobility and the requirement that whole net is called out.

Summary of the invention

The technical problem to be solved in the present invention provides the method that a kind of CDMA traditional packet digital calling is realized roaming, and traditional group call can't provide the problem of roaming in the solution prior art.

In order to address the above problem, the invention provides a kind of code division multiple access digital cluster traditional group call and realize the method for roaming, comprise enhanced paging and traditional group call, wherein, the master control group system is introduced enhanced paging mode in the code division multiple access digital cluster traditional group call, may further comprise the steps:

(a) roamer initiates the cluster multi call request, the scheduler subsystem on caller visit ground by caller ownership place scheduler subsystem to subscription authentication after, the discovery user is a roaming state; The scheduler subsystem request caller ownership place scheduler subsystem on caller visit ground re-authenticates calling, and caller ownership place scheduler subsystem becomes the control point of this cluster multi call;

(b) caller ownership place scheduler subsystem authenticates cluster multi call again, and obtains the group information of this cluster multi call and all users' information;

(c) caller ownership place scheduler subsystem is sending the traditional group call request by the ownership place base station controller, when joining in this cluster multi call in the traditional type mode the non-roaming user of caller ownership place, send enhanced paging request by caller visit ground scheduler subsystem and caller visit ground base station controller to the roaming calling subscriber, described roaming calling subscriber is added calling in the enhanced mode; If also have other group members except that caller to roam in the other places, then caller ownership place scheduler subsystem sends enhanced paging request by called visit ground scheduler subsystem and called visit ground base station controller to the roaming called subscriber, and described roaming called subscriber is added calling in the enhanced mode.

Further, said method also can have following characteristics: in the step (a), after receiving described roamer's cluster multi call request by the dispatch server of caller visit ground scheduler subsystem, by visit ground schedule register, caller ownership place schedule register the user is carried out authentication, obtain user profile and group information, judge that this user is in roaming state.

Further, said method also can have following characteristics: in the step (b), initiate authentication again by caller ownership place dispatch server, obtain group information and all user profile from caller ownership place schedule register.

Further, said method also can have following characteristics: in the step (c), the non-roaming user of caller ownership place is as follows with the implementation procedure that the traditional type mode joins this cluster multi call: the dispatch server of caller ownership place sends traditional group call to the ownership place base station controller, the ownership place group member in this group of paging; The ownership place base station controller sends the message that pages reply for the ownership place dispatch server, and the paging that the non-roaming user of ownership place transmits from dynamic response ownership place base station controller successfully inserts and calls out.

Further, said method also can have following characteristics: described to add the implementation procedure of calling in the enhanced mode as follows: the ownership place dispatch server by visit ground dispatch server and visit ground base station controller with enhanced mode paging roamer, the roamer sends enhanced to the ownership place dispatch server and pages reply by visit ground base station controller, visit ground dispatch server, thereby the request of roamer's cluster multi call is set up successfully, and the roamer successfully inserts in the calling.

Method of the present invention is introduced enhanced paging mode in the CDMA traditional packet digital calling, the roamer is inserted traditional group call in the enhanced mode.Traditional group call is applicable to the zone that number of users is many and concentrate, and the enhanced paging is applicable to that number of users is few and than the zone of decentralized.User's ratio that the whole network is roamed in the cluster multi call in the practical application seldom, in the traditional group call roaming place user is carried out the enhanced paging, can make full use of the characteristic of system, satisfy user's mobility and the requirement that whole net is called out, reduce taking simultaneously the roaming place local resource.

Description of drawings

Fig. 1 is the network structure of the embodiment of the invention;

Fig. 2 is the flow chart of setting up the request of roamer's cluster multi call of the embodiment of the invention.

Embodiment

Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.

Fig. 1 is the network structure of the CDMA digital clustering communication system of the embodiment of the invention, and each part is described as follows:

The master control group system: in a cluster roaming call, control continuing of whole call flow, safeguarding all information of whole calling, and the distribution of the right to speak of administer calls etc.Group system A and group system B have been shown among Fig. 1.Generally speaking, the master control group system of individual calling is a caller visit ground group system, and the master control group system of group calling is a caller ownership place group system, and each group system comprises:

MS: possess the terminal equipment of group service function, also possess multiple business abilities such as interconnect call business, Packet data service, short message service simultaneously, can in the system whole-network coverage, roam.

BSS: base station sub-system, comprise base station controller (BSC), base station transceiver (BTS) and with the mutual dispatching client (PDC) of network side, finish the access function of terminal, and use type of service to distribute corresponding subsystem processes according to the user.

DSS: scheduler subsystem, finish control and management function to termination set group business in its coverage, be the control centre of group service.Scheduler subsystem interconnects by IP network.Scheduler subsystem comprises dispatch server (PDS), schedule register (PHR), wherein:

Dispatch server PDS realizes the calling control and the right of speech management of trunked call.In the ownership place group system, be referred to as the ownership place dispatch server, in visit ground group system, be referred to as visit ground dispatch server, in the master control group system, be referred to as the master control dispatch server;

Schedule register PHR preserves the log-on message and the positional information of cluster user and group, realizes authentication, mandate and billing function to cluster user, and the position is upgraded and group management function.In the ownership place group system, be referred to as the ownership place schedule register, in visit ground group system, be referred to as visit ground schedule register, in the master control group system, be referred to as the master control schedule register.

The resource distribution mode of the sharing wireless channel that the traditional type that the present invention adopts is called out, call out in the time-continuing process and how to utilize these Channel Transmission voice and signalings, the group information updating of terminal, roamer's location registers, how to realize the roaming of enhanced trunked call, and the technology such as right of speech management in the trunked call roaming have had detailed explanation, no longer emphasis elaboration of the present invention in existing patent of invention.The present invention focuses on the explanation to roamer's control method in the paging-type calling.

Fig. 2 is a flow chart of setting up the request of roamer's cluster multi call in the embodiment of the invention, and its reciprocal process may further comprise the steps:

Step 201: the roamer presses PTT (Push To Talk, Chinese refer to " PoC " or " PTT ") key and rises and exhale, the request of Mobile Origination trunked call;

Step 202: visit ground PDS, PHR, caller ownership place PHR send the access authentication request by visit ground;

Step 203: visit ground PDS receives that by caller ownership place PHR, visit ground PHR access authentication replys, and obtains user profile and group information, and the judgement user is the roamer;

Step 204: visit ground PDS transmits the cluster multi call request to caller ownership place PDS, and caller ownership place PDS becomes this and calls out the control point;

Step 205: caller ownership place PDS sends the access authentication request to caller ownership place PHR;

Step 206: caller ownership place PHR sends access authentication to caller ownership place PDS and replys;

By step 205～206, caller ownership place PDS initiates authentication again, obtains group information and all user profile from caller ownership place PHR;

Step 207: ownership place PDS judges that group is traditional group, by caller visit ground PDS and wireless base station with enhanced mode paging calling subscriber;

Step 208: the calling subscriber sends enhanced to ownership place PDS and pages reply by ground, visit ground base station controller, visit ground PDS, and the calling subscriber successfully inserts in the calling.

Wherein, in the step 201, the resource distribution mode of different callings is transparent for the user, and the user need not to know such difference, so, the operation of user on terminal, it is identical working the mode of exhaling.In step 207～208, introduce the enhanced paging during traditional type is called out, the paging mode is transparent to the user, and which kind of paging mode the user needn't know in is inserted.Taking which kind of type paging is a kind of mode of group system reasonable disposition local resource.

For the ownership place user,, use original traditional type paging can bring into play the characteristic of system, the reasonable distribution local resource because number of users is many and concentrated.

Therefore, in step 207～208, also comprise step 209～210: ownership place PDS sends the traditional type paging simultaneously to the ownership place base station controller, the ownership place group member in this group of paging; The ownership place base station controller sends the message that pages reply for ownership place PDS, and the paging that the ownership place user transmits from dynamic response ownership place base station controller inserts calls out.

In addition,, also have other group members to roam in the other places, then can also comprise following step (optional) if except that caller:

Step 211: if in the group member except that caller, also have other members to roam in the other places, caller ownership place PDS by called visit ground PDS of roaming and the called visit of roaming base station controller roam the called subscriber with the paging of enhanced mode;

Step 212: the roaming called subscriber sends enhanced to caller ownership place PDS and pages reply by visit ground base station controller, visit ground PDS.

By step 211～212, the called subscriber who roams in the other places is used the enhanced paging, can the reasonable disposition local resource.

Finish after the above-mentioned steps performing step 213: this roamer's cluster multi call request is set up successfully.

In sum, the present invention proposes a kind of control method of in the Digital Clustering of realizing based on the CDMA2000 technology, traditional group call being roamed, this method is applicable to the paging to roamer in the traditional type calling, the control of channel assignment and saving channel resource etc.This method has not only made full use of existing related specifications in the CDMA2000 technology, and by in traditional type is called out, introducing enhanced paging mode, on the basis of the advantage that keeps existing traditional type calling, optimize the configuration of local resource, satisfy whole net calling and user's ambulant demand, met growing trunking communication demand.

Claims

1. A method for roaming in traditional group calls of code division multiple access digital trunking, comprising enhanced paging and traditional group calls, characterized in that the main control trunking system is in traditional group calls of code division multiple access digital trunking The introduction of enhanced paging method includes the following steps:

(a) A roaming user initiates a cluster group call request. After the dispatching subsystem of the calling place authenticates the user through the dispatching subsystem of the calling place, it finds that the user is roaming; the dispatching subsystem of the calling place requests the master Call the home dispatching subsystem to re-authenticate the call, and the calling home dispatching subsystem becomes the control point of this trunking group call;

(b) The dispatching subsystem at the originating place of the calling party re-authenticates the trunking group call, and obtains the group information and information of all users of the trunking group call;

(c) The dispatching subsystem of the caller's home location sends a traditional group call request through the home base station controller, and adds the non-roaming users in the calling home location to this trunk group call in the traditional way, and at the same time, through The scheduling subsystem of the calling site and the base station controller of the calling site send an enhanced paging request to the roaming calling user, and add the roaming calling user to the call in an enhanced mode; if there are other If the group member is roaming in another place, the dispatching subsystem at the calling site sends an enhanced paging request to the roaming called user through the dispatching subsystem of the called visiting site and the base station controller of the called visiting site, and sends the roaming called user Join calls in enhanced mode.

2. The method according to claim 1, characterized in that, in step (a), after receiving the roaming user's cluster group call request by the scheduling server of the visiting location scheduling subsystem, the scheduling server of the visiting location dispatches The register and the caller attribution dispatch register authenticate the user, obtain user information and group information, and determine that the user is in a roaming state.

3. The method according to claim 1, characterized in that, in step (b), the dispatching server at the calling home location re-initiates the authentication, and obtains the group information and the distributed user information from the dispatching register at the calling home location .

4. The method according to claim 1, characterized in that, in step (c), the implementation process of adding the non-roaming user in the calling place to this trunk group call in a traditional manner is as follows: The local scheduling server sends a traditional group call to the home base station controller to page the home group members in the group; the home base station controller sends a paging response message to the home dispatch server, and the home non-roaming The user automatically responds to the paging forwarded by the home base station controller and successfully accesses the call.

5. The method according to claim 1, characterized in that, the realization process of joining a call in an enhanced mode is as follows: the dispatching server in the home place paging and roaming in the enhanced mode through the dispatching server in the visited place and the base station controller in the visited place The user and the roaming user send an enhanced paging response to the home dispatching server through the visited base station controller and the visited dispatching server, so that the group call request of the roaming user group is successfully established, and the roaming user successfully accesses the call.