CN100463575C - Traditional and Enhanced Call Convergence Method of CDMA Digital Trunking - Google Patents

Abstract

A traditional and enhanced call fusion method of a CDMA digital trunking system, the user terminals included in the group are divided into enhanced members and traditional members. When calling, the PDS saves the dispatching location area DLA where the calling terminal is located, and from In the authentication response message returned by the PHR, the group DSA and the member category of each terminal are known; if the PDS judges that the calling terminal is a traditional member and is not in the group DSA, it rejects the call; The enhanced member sends a separate paging message, and sends a traditional group paging message to all BSSs in the DSA; after receiving the paging message, the BSS establishes an STDL with the PDS, allocates resources for the user terminal, and returns or Forward the setup complete message; after the PDS receives the setup complete message from the terminal or BSS, the call setup is successful. Finally, the present invention provides a method for realizing traditional calling terminal and called terminal not restricted by the group DSA in the CDMA digital trunking system, and can even roam.

Description

Traditional and Enhanced Call Convergence Method of CDMA Digital Trunking

Technology area

The invention relates to the field of mobile communication, in particular to a control method for a trunking call process in a CDMA (Code Division Multiple Access) digital trunking system.

Background technique

Mobile communication technology has been developed to the third generation, among which trunking communication has increasingly become an indispensable communication service. Trunking communication refers to a dedicated dispatching communication method, including dedicated command and dispatching communication. During use, trunking users can join calls at the same time, and calls are made in simplex or half-duplex mode.

Trunking communication has experienced the development process from simple intercom system to single base station small system, and then to large-capacity multi-area system, and then experienced the leap from analog trunking to digital trunking, making trunking communication in signaling coding, using multiple access More reliable digital processing methods can be used in aspects such as mode, voice coding, modulation and demodulation technology, synchronization technology, error detection and error correction and diversity technology. Two digital trunking systems widely used at present are iDEN (integrated Digital Enhanced Network) and TETRA (Terrestrial Trunked Radio) based on TDMA (Time Division Multiple Access) technology. These systems are applied to specific departments and units, all of which belong to dedicated clusters. In order to promote the large-scale application of digital trunking systems and further improve the utilization of frequency resources, a new application trend of The trunking system is combined for unified use and management, so as to achieve the purpose of sharing channels and channels, sharing coverage areas, communication services, and sharing expenses, and finally develops the trunking application from individual professional users to multi-group users to achieve shared network operate.

The development of trunking communication from private network to public network has promoted the research on the realization of trunking technology on the existing GSM (Global System for Mobile Communications, Global System for Mobile Communications) and CDMA (Code Division Multiple Access, Code Division Multiple Access) networks.

Currently, digital trunking based on CDMA2000 technology can be divided into two main types according to channel resource allocation methods:

One is the enhanced group call, which allocates an air channel for each cluster user terminal separately when making a cluster call. The user terminal is paging according to the existing CDMA2000 1X ordinary voice call, that is, according to IMSI (International Mobile Subscriber Identity , International Mobile Station Identity) paging incoming calls, and when the terminal accesses the call, the channel allocation method for the terminal is also used in the channel allocation method of ordinary voice calls, so that this kind of trunking call can even be broken through in the way of individually allocating channels Roaming is realized by geographical restrictions, and the performance is different from the existing professional trunking call, so it is called enhanced group call;

The other is the traditional group call, in which all users share all the forward and reverse channels during the group call, and the terminal captures the forward shared service channel to access the call, so that as long as the user terminal sends the forward shared channel before the group call Calls can be received within the range, and the unlimited capacity of a single cell is realized. This call performance is similar to the existing professional trunking call, so it is called a traditional group call. Of course, due to signal power limitations, this call cannot be like the enhanced call Calling like this allows user terminals to break through geographical restrictions. For the process and resource allocation method of traditional group calls, please refer to the patent application with the application number 200510134219.1 titled "CDMA digital trunking traditional group call call establishment and call control method", and the application number 200510134220.4 titled "One A method for implementing a CDMA digital trunking traditional group call process" patent application.

Calls in the trunking system are usually limited to a certain geographical range. If the trunking terminal exceeds this limit range, the system will not provide trunking call services. This limit range is called the dispatching area. According to the actual needs of network planning, the coverage network of the system can be divided into several dispatch location areas (DLA, Dispatch Location Area). The dispatch location area can be the whole network or a part of the network. As the smallest unit, the cluster call is designated as a dispatch service area (DSA, Dispatch Service Area). The dispatch service area is a collection of dispatch location areas (see Figure 1). When the cluster call exceeds the dispatch service area specified by the system, the system will no longer It provides services. The scheduling service area/scheduling location area/community of the present invention is schematically shown in Figure 1, and the description is as follows:

Cell 101: cell for short, a unit area covered by signals in wireless communication, such as Cell_1 to Cell_7 in the example;

Dispatch location area 102: Dispatch location area (DLA, Dispatch Location Area) is the smallest unit of the limited range in the CDMA standard digital trunking call, and is a collection of cells, such as the example DLA_1 to DLA3, the dispatch location area can be as small as including only one cell , for example, DLA_1 includes only Cell_2, and DLA_3 includes only Cell_5, or may include multiple cells, for example, DLA_2 includes Cell_3 and Cell_6.

Dispatch Service Area 103: Dispatch Service Area (DSA, Dispatch Service Area) is a collection of dispatch location areas, such as example DSA_1 to DSA_2, this dispatch service area can be assigned to a group in the trunking call, and the scope of the trunking call service of this group is limited , such as the example DSA_1 includes DLA_1, DLA_2 and DLA_3.

The present invention mainly discusses the integration of enhanced and traditional calls based on traditional calls in the CDMA2000 digital trunking system. In the prior art, in the case of channel sharing, traditional calls are actually subject to scheduling in consideration of signal power issues. If the area is restricted, the call initiator must initiate the call within the designated dispatching service area, and the called terminal can only receive voice and forward messages within the designated dispatching service area. However, in the actual use of the trunking system, there will be such a situation. The user wants to initiate a call to a group outside the dispatching service area, and this group can accommodate a large number of users in a certain area, that is, the user initiates a traditional call outside the dispatching service area, and even hopes that the traditional call can include those who are not in the dispatching service User terminals in the area and roaming user terminals are called terminals. In this way, neither the enhanced call nor the traditional call can meet user requirements.

Contents of the invention

The technical problem to be solved by the present invention is to provide a traditional and enhanced call fusion method in the CDMA2000 digital trunking system, which realizes the needs of the traditional call to accommodate a large number of users in a certain area, and also satisfies the needs of the calling terminal and the called party. The terminal is not required to be restricted by the group's dispatching service area.

The idea of the present invention is to use the characteristic of the enhanced group call to establish a channel for user terminals individually, and combine it with the traditional shared channel that can realize the unlimited capacity of the designated area cell, so as to solve the above technical problems. In order to facilitate the description of this method, the user terminals in the group that are not restricted by the scheduling service area of the group are called enhanced members of the group, and the base station establishes a channel for them independently during the call establishment process; the user terminals in the group that are restricted by the scheduling service area are called The user terminal is a traditional member of the group, and accesses the shared channel established by the base station for the group during the call establishment process.

In order to solve the above-mentioned technical problems, the present invention provides a kind of CDMA digital trunking system traditional type and enhanced type call fusion method, comprise call establishment process, this process comprises the following steps:

(a) dividing the user terminals included in the group into two types: enhanced members and traditional members, and saving the information of the member types in the dispatching attribution register;

(b) During the call establishment process, the dispatching server saves the dispatching location area information of the calling terminal contained in the call request, and learns the group dispatching service area and the member category to which each terminal belongs from the authentication response message returned by the dispatching home register ;

(c) If the dispatching server judges that the calling terminal is a traditional member and is not in the dispatching service area of the group, it will reject the call and end; otherwise, it will send a separate paging message to each enhanced member in the group to All base station subsystems in the dispatching service area send traditional group paging messages;

(d) After the base station subsystem receives the individual paging message or/and the traditional group paging paging message, it establishes a shared cluster data link with the scheduling server, allocates resources for the user terminal, and sends to the scheduling server The server returns the establishment completion message of the traditional member or forwards the establishment completion message of the enhanced member;

(e) The dispatch server receives the establishment complete message returned by the enhanced member or/and the establishment complete message returned by the base station subsystem in the service area, and the call is established successfully.

Further, the above method can also have the following characteristics: in the step (d), each base station subsystem and dispatching server only establishes one shared cluster data link during the call establishment process, which is used to transmit all Business data of enhanced members and traditional members.

Further, the above method may also have the following features: in the step (c), if a user terminal as an enhanced member roams to the service area of another dispatching server, the dispatching server first sends a request to the roaming dispatching server. The call request is forwarded by the roaming scheduling server to the roaming user terminal.

Further, the above method can also have the following characteristics: the said separate paging message sent to the enhanced member refers to the paging message of the ordinary voice call sent according to the international mobile station identity code, and the base station subsystem is the user's paging message When the terminal allocates channels, it also uses the channel allocation method of ordinary voice calls to allocate individual channels, and returns the establishment completion message after the enhanced member accesses.

Further, the above method can also have the following characteristics: in the step (d) after the base station subsystem receives the traditional group call paging, it establishes the shared service channel resource of the air interface, and periodically sends the broadcast channel within its control range According to the parameters carried in the message, the group of traditional members captures the shared traffic channel established by the base station subsystem in the area for this call, and independently accesses the call.

Further, the above method can also have the following characteristics: it also includes a voice forwarding process, which includes the following steps:

(f) The terminal that has obtained the right to speak sends a reverse voice frame to the base station subsystem. If the terminal is an enhanced member, it will be sent through the reverse traffic channel assigned to it separately. If it is a traditional member, it will be sent through the group The established shared reverse traffic channel is sent;

(g) The base station subsystem transmits voice frames to the dispatching server through the shared cluster data link established for this call between it and the dispatching server; The link forwards voice frames;

(h) After receiving the speech frame, the base station subsystem at the opposite end of each shared cluster data link sends the speech frame to the enhanced non-speaking member through the forward traffic channel independently established for it, and at the same time sends the speech frame to the base station subsystem Send voice frames on the forward shared traffic channel of the traditional member established for this call.

Further, the above method can also have the following characteristics: after the dispatching server receives the voice frame sent by the base station subsystem in the step (g), if there is a roaming user terminal, the voice frame is forwarded to the dispatching server in the roaming place, Then the roaming scheduling server transmits the voice frame to the base station subsystem through the established shared cluster data link.

Further, the above method can also have the following characteristics: it also includes a call release process, which includes the following steps:

(i) The enhanced member or the traditional member initiates a request to release the group call to the dispatch server;

(j) After receiving the request, the dispatching server searches for all enhanced members in the group, sends release commands according to the International Mobile Station Identity code to these members individually, and sends traditional release commands to all base station subsystems involved in this call ;

(k) After receiving the release command, the enhanced member returns the release complete message to the dispatch server and exits the call, and the base station subsystem that receives the release command releases the shared traffic channel established for this call, and then returns the release complete message to the dispatch server information.

It can be seen from the above that the present invention realizes that the traditional calling terminal and the called terminal are not limited by the group dispatching service area, and can even roam in the CDMA2000 digital trunking system. It can meet the diverse and growing functional needs of cluster users.

Description of drawings

FIG. 1 is a schematic diagram of a network in the case of the integration of the traditional type and the enhanced type.

Fig. 2 is a flow chart of call establishment in the case of traditional and enhanced integration.

Fig. 3 is a flow chart of voice forwarding under the fusion of traditional and enhanced modes.

Fig. 4 is a flow chart of call release in the case of traditional and enhanced fusion.

Detailed ways

Traditional type and enhanced fusion method of the present invention are based on CDMA2000 digital trunking system, and its network schematic diagram is as Fig. 1, and each constituent part is described as follows:

Trunk terminal (MS): A terminal device capable of storing user information, group information, scheduling area judgment, response, group call paging and other trunking services.

Base station subsystem (BSS): includes a transceiver (BTS) supporting trunking calls, a base station controller (BSC) and a dispatch client (PDC) interacting with the network side.

Dispatch server (PDS): Realize call control and talk right management of group calls.

Scheduling Home Register (PHR), which saves the registration information and location information of cluster users and groups, realizes the functions of authentication, authorization and billing of cluster users, as well as location update and group management functions;

Shared Trunking Data Link (STDL, Shared Trunking Data Link), is the bearer of voice forwarding between the base station subsystem and the dispatching server. Direct or reverse business data (voice flow), the speaker’s voice is sent to the BSS through the air interface, and then the BSS sends it to the PDS through the STDL established between the PDC and the PDS, and the PDS forwards it to all STDLs involved in this call Talker's voice, STDL released on call release.

Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. While describing the steps of the embodiment, an application example will also be combined. Please refer to Figure 1, assuming that there are three terminals, MS_1, MS_2, and MS_3, which are allocated in the same traditional group in the scheduling home register, called Group_1, and the scheduling service area of Group_1 is set as DSA_1. As members of the same Group_1, these three user terminals are granted different permissions, representing different types of group members. MS_1 represents traditional members, which are restricted in the scheduling service area of Group_1; MS_2 and MS_3 represent enhanced members in the scheduling service of Group_1 There is no restriction in the area, where MS_2 represents the user terminal that initiates a call, acquires the right to speak, or initiates call release, and MS_3 represents all other enhanced members, including those that roam. Since the front/reverse channel needs to be established separately for the enhanced member, which occupies a lot of air interface resources, it is necessary to control the number of enhanced members in the same group, and this number can be configured according to the capacity of the existing network.

As shown in Figure 1, the three terminals are distributed as follows: MS_1 is in DLA_1 and belongs to DSA_1 of Group_1; MS_2 is in DLA_3 and belongs to DSA_1 of Group_1; MS_3 is in Cell_7 and belongs to DSA_1 of Group_1. The application example will illustrate the corresponding process through three processes: MS_2 initiates a call to Group_1, MS_2 sends voice after obtaining the right to speak, and MS_2 initiates the release of the established Group_1 Group_1 call.

Fig. 2 is the flow chart of call establishment of the present embodiment, and this flow process comprises the following steps:

Step 201, the user initiates a call, and the call request of the calling terminal is sent to the dispatching home register (PHR) through the base station subsystem (BSS) and the dispatching server (PDS) for authentication, and the call request needs to carry the current dispatcher of the calling terminal. location area (DLA);

Referring to FIG. 1 as an example, MS_2 initiates a call to Grroup_1. This call is called Call_1 for the convenience of the following discussion, and the call request message carries the dispatching location area DLA_3 where MS_2 is currently located.

Step 202, the dispatching attribution register authenticates the call request, mainly to judge whether the user terminal has the call authority to the group, etc., and then dispatching the attribution register to group the group identification (GID, Group ID), dispatching service area, Information such as whether the calling user terminal is an enhanced member, those called user terminals (called) in the group and whether it is an enhanced member is sent to the dispatching server through the response message of the calling authentication request;

Group ID (GID) is an identification number that is uniquely assigned to a group in the entire network in the dispatching system. In the example, the information of this call fed back to the dispatching server by the dispatching home register includes: GID, dispatching service area DSA_1, the calling user terminal is an enhanced member, there are two types of called in the group, the traditional member represented by MS_1 and the traditional member represented by MS_2 Enhanced members of delegates etc.

Step 203, after receiving the authentication response, the dispatching server judges whether the caller is an enhanced member, and if it is an enhanced member, it does not further judge the dispatching area, and directly sends a paging according to the IMSI to the calling party or is called an enhanced caller. paging (the calling party is the caller/calling terminal), if it is a traditional member, it is judged whether it is in the dispatching service area set by the group, and if it is not in the dispatching service area, the call is sent to the calling terminal Reject the message, the reason for the rejection is "out of the dispatching service area", end; if it is within the dispatching service area, send a traditional group call paging to the corresponding base station subsystem according to the traditional group call initiation process;

So far, through this method, it is possible to allow enhanced members in the traditional group call, and allow these enhanced members to initiate the traditional group call without being restricted by the dispatching service area.

In connection with the example of the present invention: terminal MS_2 is an enhanced member of Group_1, so the scheduling server directly sends paging according to the IMSI (paging for the enhanced calling party) to it.

Step 204, the paging according to the IMSI sent to the caller will first pass through the base station subsystem, and the base station subsystem judges that it is a new group call according to the GID, and then the dispatching client (PDC) sends the shared call to the dispatching server (PDS) cluster data link (STDL) establishment request;

The corresponding base station may receive the paging of the enhanced user according to the IMSI and the traditional group paging of the base station. No matter which kind of paging request is received, the PDC will only request a PDS for the current call of the same group. STDL, if one has already been established, no STDL request will be sent to the PDS. Regardless of whether it is an enhanced or traditional member, all reverse voices will be sent to the PDS through the same STDL. In this way, the integration of voice forwarding and bearer STDL is realized.

Step 205, after the dispatching server allocates the STDL resource of the call, responds to the establishment STDL request of the dispatching client, and sends an STDL establishment response to the dispatching client;

Step 206, when the scheduling server judges that the authentication response includes enhanced called terminals, send a paging request according to IMSI to these called terminals;

In the example, MS_3 is in Cell_7 and does not belong to the dispatching service area DSA_1 of Group_1, but it is an enhanced member in Group_1, so it can still send a paging request to it. MS_3 can even represent a terminal roaming to the jurisdiction of another dispatching server, as long as it sends a paging request to the dispatching server where it roams, and it forwards it to the roaming terminal.

In this way, the problem that the called party may not be limited by the dispatching service area or even roam in the traditional call can be solved.

Step 207, the dispatching server sends a conventional group call to all base station subsystems involved in the dispatching service area returned in the authentication response;

The purpose is to allow all base station subsystems within the range of the group's scheduling service area to establish shared traffic channel resources for traditional members within their control range.

Step 208: After receiving the traditional group paging, the base station subsystem establishes the shared service channel resources of the air interface, and periodically sends broadcast channel assignment messages to its control range, mainly carrying GID, DSA, Wash code, and long code Mask and other information;

If the traditional members of this group are in their dispatching service area, they can receive the broadcast channel assignment message, and capture the shared service channel established by the base station subsystem in the area for this call according to the corresponding parameters carried in the message, and access it autonomously This call. As an example, after receiving the broadcast channel assignment message from the base station subsystem, MS_1 autonomously accesses the shared service channel of Call_1 for traditional members.

Step 209, call the enhanced member (caller) and return the establishment completion message;

In the example, MS_2 responds to its paging and returns a setup complete message.

Step 210, the enhanced member (called) returns the establishment completion message;

In the example, MS_3 responds to its paging and returns a setup complete message.

Step 211, after the base station subsystem receives its traditional group call paging and establishes the air interface resource, it returns the establishment completion message of the base station subsystem to the scheduling server;

In step 212, the scheduling server determines that the group has been established after receiving the caller (enhanced member), the called (enhanced member) and the base station subsystem establishment completion message, and notifies the scheduling home register.

It should be noted that, in the above process, there is no fixed order for the steps of sending paging to various called parties, and there is no fixed order for the responses of each paging back. The images shown are examples only.

It can be seen from the above process that the group establishment after the integration of the traditional and enhanced methods is no longer just a judgment of the enhanced group call establishment or a pure traditional group call judgment. This judgment strategy can be formulated according to specific needs, but Considering that the enhanced member will return the establishment complete message separately, while the traditional member only returns a establishment complete message by the base station subsystem, for example: the establishment complete message returned by the caller of the enhanced member plus any enhanced member The set-up complete message returned by the called party or the set-up complete message returned by the caller of the enhanced member plus the set-up complete message returned by any base station subsystem is used as a sign of group call establishment.

Fig. 3 is the flow chart of voice forwarding under the fusion situation of traditional type and enhanced type, including the following steps:

Step 301, the terminal that has obtained the right to speak sends a reverse voice frame to the base station subsystem through the air interface. If the terminal is an enhanced member, it sends it through the reverse traffic channel assigned to it on the air interface. If it is a traditional member, it needs to pass The shared reverse traffic channel established by the group is sent;

In the example, MS_2 is an enhanced member and has obtained the speaking right in this call Call_1, then the terminal sends voice frames to the base station side through the reverse traffic channel allocated to it separately.

Step 302, the base station subsystem transmits the voice frame to the dispatch server through the STDL established between it and the dispatch server for this call;

Step 303, the dispatching server forwards voice frames to all STDLs established for this call, if there is a roaming user terminal, then forwards the voice frames to the dispatching server controlling its roaming place, and then the roaming dispatching server forwards the speech frame to the STDL through the established STDL BSS transmits voice frames;

Step 304, after receiving the voice frame forwarded by the scheduling server, the peer base station subsystem of each STDL sends the voice frame to the enhanced non-speaking member through the forward traffic channel independently established for it according to the group and user information retained in its database speech frame;

As shown in Figure 2: the base station subsystem sends voice frames to MS_3 alone.

In step 305, the base station subsystem sends voice frames to the forward shared traffic channel of the traditional member established for this call while separately sending the voice frame to the enhanced member.

Fig. 4 is the flow chart of call release under the fusion situation of the traditional type and the enhanced type of the present embodiment, including the following steps:

Step 401, the user terminal initiates a request to release the group call, whether it is an enhanced member or a traditional member can initiate a release request;

In the example, combining the example in Figure 1 and Figure 4: MS_2, as an enhanced member, initiates a release request for Call_1.

Step 402, after receiving a group call release request from a certain terminal, the scheduling server searches for all enhanced members in the group, and sends release commands according to IMSI to these members individually;

In the example, as shown in Figure 4: the base station subsystem sends release commands to MS_2 and MS_3.

Step 403, in addition to sending the release command to the enhanced members individually, the scheduling server also sends a traditional release command to all base station subsystems involved in this call;

The main difference between the traditional release command and the release command sent to the enhanced member according to the IMSI is that it does not carry the IMSI information for the specific member.

Step 404, after receiving the release command, the enhanced member returns the release completion message to the scheduling server and exits the call;

In the example, as shown in Figure 4: MS_2 and MS_3 respond to the release completion message after receiving the release command and then exit Call_1;

Step 405, the base station subsystem that receives the release command releases the shared service channel established for this call, and then returns a release completion message to the dispatch server;

When the air interface resources are released, the traditional members who access the shared channel of this call will automatically exit if they cannot capture the shared channel resources.

In the example, as shown in Figure 4: MS_1 automatically exits Call_1 after failing to capture the forward shared channel of Call_1;

To sum up, the present invention proposes a method in CDMA2000 digital trunking to solve the problem of user terminals not restricted by the dispatching service area that may exist during traditional calls, including calling out without being restricted by the group's dispatching service area and called It can not be limited by the dispatching service area and even roaming, which finally meets the increasing functional requirements of the diversified cluster users.

Claims (8)

1. CDMA digital packet formula and enhanced are called out fusion method, comprise call establishment, and this process may further comprise the steps:

(a) user terminal that group is comprised is divided enhancement mode member and traditional member two classes, and the information of this member's classification is kept at dispatching home location register;

(b) in the call establishment, dispatch server is preserved rising of comprising in the call request and is exhaled terminal place dispatch location area information, and knows the member's classification under this group scheduling coverage and each terminal from the authentication responses message that dispatching home location register is returned;

(c) to exhale terminal be traditional member and not in this group scheduling coverage to this dispatch server as having judged, then refusal is called out, finish, otherwise, each enhancement mode member in this group sends independent beep-page message, and all base station sub-systems are sent out the traditional group call beep-page message in the dispatch service zone;

(d) base station sub-system is received by described independent beep-page message or/and behind the traditional group call beep-page message, shared cluster data link between foundation and the dispatch server, be the user terminal Resources allocation, and finish message to the foundation that the foundation that dispatch server returns traditional member is finished message or transmitted the enhancement mode member;

(e) this dispatch server receives the foundation that the enhancement mode member returns and finishes message or/and message is finished in the foundation that base station sub-system is returned in the coverage, the call setup success.

2. the method for claim 1, it is characterized in that, in the described step (d), each base station sub-system and dispatch server are only set up a shared cluster data link in call establishment, are used to transmit the business datum of all enhancement mode members and traditional member under this base station sub-system.

3. the method for claim 1, it is characterized in that, in the described step (c), roam into the coverage of another dispatch server if any user terminal as the enhancement mode member, then this dispatch server sends the paging request to the roaming place dispatch server earlier, is forwarded to the user terminal of this roaming again by this roaming place dispatch server.

4. the method for claim 1, it is characterized in that, the described independent beep-page message that described each enhancement mode member in this group sends is meant the beep-page message of the normal voice calls that sends by international travelling carriage identification code, base station sub-system also is to adopt the channel allocation mode of normal voice calls to distribute independent channel when being this user terminal allocated channel, returns to set up after enhancement mode member inserts and finishes message.

5. the method for claim 1, it is characterized in that, after described step (d) base station sub-system is received the traditional group call paging, set up the shared service channel resource of eating dishes without rice or wine, and to its control range intercycle transmission broadcast channel assigned message, this is organized traditional member and catches the shared service channel for this call setup of base station sub-system in this zone according to the parameter of carrying in this message, independently inserts this calling.

6. as the described method of arbitrary claim in the claim 1 to 5, it is characterized in that also comprise the voice repeating process, this process may further comprise the steps:

(f) terminal of acquisition right of speech sends reverse speech frame to base station sub-system, is the enhancement mode member as this terminal, then send by independent reverse traffic channel to its distribution, if traditional member, then by being the upright shared reverse traffic channel transmission of this establishment;

(g) described base station sub-system is by between itself and dispatch server be the shared cluster data link speech frames described dispatch server extremely of this call setup; Described dispatch server is transmitted speech frame to call out all shared cluster data link of being set up for this;

(h) after the base station sub-system of every shared cluster data link opposite end is received speech frame, by for its forward traffic channel of setting up separately sends speech frame separately, is simultaneously that the traditional member's of this call setup forward direction shared service channel sends speech frame to the non-member of speaking of enhancement mode under described base station sub-system.

7. method as claimed in claim 6, it is characterized in that, after dispatch server is received the speech frame that base station sub-system sends in the described step (g), if roaming user terminal is arranged, then transmit speech frame, pass through the shared cluster data link of foundation to the base station sub-system speech frames by this roaming place dispatch server again to the dispatch server of its roaming place.

8. method as claimed in claim 6 is characterized in that, also comprises the calling dispose procedure, and this process may further comprise the steps:

(i) enhancement mode member or traditional member initiate to discharge the request of group calling to dispatch server;

(j) dispatch server is received all enhancement mode members in this group of this request back search, sends release command by international travelling carriage identification code separately to these members, and all base station sub-systems transmission traditional type release commands that relate to this calling;

(k) the enhancement mode member receives after the release command to return to dispatch server and withdraws from this behind the Release complete and call out, and receives that the base station sub-system of release command is released to the shared service channel of this call setup, returns Release complete to dispatch server then.

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