CN100455071C - Method and system for realization of sharing A interface circuit in cluster call - Google Patents

Method and system for realization of sharing A interface circuit in cluster call Download PDF

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Publication number
CN100455071C
CN100455071C CNB200610075199XA CN200610075199A CN100455071C CN 100455071 C CN100455071 C CN 100455071C CN B200610075199X A CNB200610075199X A CN B200610075199XA CN 200610075199 A CN200610075199 A CN 200610075199A CN 100455071 C CN100455071 C CN 100455071C
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China
Prior art keywords
interface circuit
bsc
msc
cic
assignment
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CNB200610075199XA
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Chinese (zh)
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CN101043662A (en
Inventor
鲍国庆
沈敏军
戴明扬
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华为技术有限公司
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Priority to CNB200610075199XA priority Critical patent/CN100455071C/en
Publication of CN101043662A publication Critical patent/CN101043662A/en
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Publication of CN100455071C publication Critical patent/CN100455071C/en

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Abstract

The disclosed implementation method for sharing A interface circuit in a swarm calling comprises: MSC or BSC determines the A interface circuit number used by BSC and the support speech rate version type of every A interface circuit; then BSC shares all referred subzones to corresponding A interface circuit as its support speech rate version type. This invention expands the application of sharing A interface circuit, and enables the network to determine the optimal speech rate coding way by considering both speech quality and wireless channel resource.

Description

Implementation method for sharing A interface circuit and system in a kind of trunked call
Technical field
The present invention relates to the communications field, relate in particular to implementation method for sharing A interface circuit and system in a kind of trunked call.
Background technology
In the trunked call originally, comprise packets of voice business (Voice Group Call Service, VGCS) and Voice Broadcast Service (Voice Broadcast Service, VBS), each sub-district all will independently take an A interface circuit, when comprising a lot of sub-district in the group, this group calling will expend a large amount of A access circuit resource when initiating.Proposed the notion of sharing A interface circuit afterwards, i.e. group calling is only used an A interface circuit to each BSC, has reached for same group of all sub-districts that are distributed under the same BSC and can share an A interface circuit.
In the prior art, two kinds of schemes are arranged for the group calling sharing A interface circuit:
First kind of scheme: mobile services switching centre (Mobile Service Switch Center, MSC) all to independently send assignment message for each sub-district, owing to share an A interface circuit, the cic circuit identification code of each assignment message kind (Circuit Identified Code, CIC) all the same.
Second kind of scheme: MSC only sends one or more assignment message to all sub-districts, carries the cell list that group calling relates in assignment message.
In above-mentioned two schemes,, require same group of all sub-districts that are distributed under the same BSC all must use the speech coding of phase same rate owing to belong to only shared A interface circuit in whole sub-districts of same BSC in a group.But for a lot of areas, need take all factors into consideration voice quality and radio channel resource, the speech coding that same BSC uses multiple different rates down occur through regular meeting.Therefore, in the prior art, the sharing mode of A interface circuit is not suitable for the speech coding that same group of different districts that is distributed under the same BSC uses different rates during trunked call, and the application of sharing A interface circuit has been caused considerable restraint.
Summary of the invention
The invention provides implementation method for sharing A interface circuit in the trunked call, in order to solve the problem that the same group of different districts that is distributed under the same BSC that exists in the prior art can not use the speech coding of different rates.
According to method provided by the invention, the present invention provides the realization system of corresponding sharing A interface circuit in addition.
The inventive method comprises:
A1, mobile services switching centre MSC determine the A interface circuit number that base station controller BSC is used in the group calling, and the corresponding rate speech release type of supporting of each A interface circuit, send to BSC;
Whole sub-districts that B1, described BSC relate to group calling share to respectively on the corresponding A interface circuit of distribution by the rate speech release type of its support, and return the assignment results messages to MSC.
In the described steps A 1, after MSC receives the group calling request, from Group Call Register GCR, obtain the attribute information of this group and determine described A interface circuit number; And the cic circuit identification code CIC tabulation of carrying the A interface circuit of determining by voice group call service VGCS/ Voice Broadcast Service VBS assignment request message, described tabulation indicates the CIC and the corresponding rate speech release type information of supporting of each A interface circuit of each A interface circuit, sends to described BSC.
According to said method of the present invention, when creating the group calling group, the attribute information of this group is stored among the GCR;
After described MSC receives the group calling request, determine the A interface circuit number of use according to the rate speech release type quantity of this group support in the attribute information of storing among the GCR.
According to said method of the present invention, newly-increased CIC tabulation cell carries described CIC list information in described assignment request message.
According to said method of the present invention, in the channel type cell of described assignment request message, carry the corresponding rate speech release type information of supporting of A interface circuit of distribution.
According to said method of the present invention, in the 5th byte of described channel type cell,, carry the rate speech release type information that corresponding A interface circuit is supported by described CIC tab sequential.
According to said method of the present invention, also comprise:
Described BSC carries the channel type information that BSC supports in the assignment results messages that described MSC returns;
Described MSC judges whether to have distributed and the unmatched unnecessary A interface circuit of channel type according to the channel type that BSC supports; If then discharge the A interface circuit of unnecessary distribution.
According to said method of the present invention, described MSC is calling out newly-increased release CIC notification message of transmission on the control connection, and the CIC information of carrying the A interface circuit that needs release sends to described BSC;
Described BSC discharges corresponding A interface circuit after receiving and discharging the CIC notification message.
According to said method of the present invention, described MSC starts timer after sending assignment request message;
Behind timer expiry, the assignment results messages that inquiry BSC returns has judged whether to distribute unnecessary A interface circuit.
The present invention provides implementation method for sharing A interface circuit in a kind of trunked call in addition, comprising:
After A2, BSC receive the VGCS/VBS assignment request of MSC transmission, determine the A interface circuit number of use according to the voice rate release type quantity of whole sub-districts support in the group calling;
Whole sub-districts that B2, described BSC relate to group calling share on the corresponding A interface circuit respectively by the rate speech release type of its support, and return the assignment results messages to MSC.
According to said method of the present invention, described BSC carries the CIC and the corresponding voice rate version information of the A interface circuit that uses each sub-district in the assignment results messages that described MSC returns;
Described MSC inserts corresponding A interface circuit in the meeting bridge according to the CIC of the A interface circuit that carries in the assignment results messages.
The invention provides the realization system of sharing A interface circuit in a kind of trunked call, comprise mobile services switching centre MSC and base station controller BSC, comprise at least among the described MSC:
The one A interface circuit determination module is determined the A interface circuit number that BSC uses in the group calling, and the corresponding rate speech release type of supporting of each A interface circuit;
The first assignment request message sending module, send the VGCS/VBS assignment request message, carry the CIC tabulation of the A interface circuit of determining, described tabulation indicates the CIC and the corresponding rate speech release type information of supporting of each A interface circuit of each A interface circuit;
The first assignment results messages receiving processing module receives the assignment results messages that BSC returns, and according to the CIC of the A interface circuit that carries in the assignment results messages, corresponding A interface circuit is inserted in the meeting bridge;
At least comprise among the described BSC:
The first assignment request message receiver module receives the VGCS/VBS assignment request message that MSC sends;
The one A interface circuit distribution module, according to the information of carrying in the described VGCS/VBS assignment request message, whole sub-districts that group calling is related to share to respectively on the corresponding A interface circuit of distribution by the rate speech release type of its support;
The first assignment results messages sending module returns VGCS/VBS assignment results messages to MSC, carries the channel type information of support, the CIC and the cell ID of the A interface circuit that used.
Also comprise among the described MSC:
Unnecessary A interface circuit judges and the release command sending module, and the channel type that the BSC that carries in the assignment results messages of returning according to BSC supports judges whether to have distributed and the unmatched unnecessary A interface circuit of this channel type; If, send one to BSC and discharge the CIC notification message, carry the CIC information of the A interface circuit that needs release;
Also comprise among the described BSC:
Discharge A interface circuit Executive Module, receive the release CIC notification message that MSC issues, discharge corresponding A interface circuit.
The present invention provides the realization system of sharing A interface circuit in a kind of trunked call in addition, comprises mobile services switching centre MSC and base station controller BSC, comprises at least among the described MSC:
The second assignment request message sending module sends the VGCS/VBS assignment request message that does not comprise A interface circuit assignment information;
The second assignment results messages receiver module receives the assignment results messages that BSC returns, and according to the CIC of the A interface circuit that carries in the assignment results messages, corresponding A interface circuit is inserted in the meeting bridge;
At least comprise among the described BSC:
The second assignment request message receiver module receives the VGCS/VBS assignment request message that MSC sends, and when not having A interface circuit assignment information in judging assignment request message, starts the 2nd A interface circuit determination module;
The 2nd A interface circuit determination module, according in the group calling all the voice rate release type quantity supported of sub-districts determine the A interface circuit number of use;
The 2nd A interface circuit distribution module, whole sub-districts that group calling is related to share on the corresponding A interface circuit respectively by the rate speech release type of its support;
The second assignment results messages sending module returns the assignment results messages to MSC, carries the CIC and the corresponding voice rate version information of the A interface circuit that uses each sub-district.
Beneficial effect of the present invention is as follows:
(1) the present invention has expanded the application of sharing A interface circuit, adopt the present invention, same group of different districts that is distributed under the same BSC can adopt the different rates speech coding, thereby make network to take all factors into consideration voice quality and radio channel resource and to determine best rate speech coding mode according to the actual conditions of different districts.
(2) the invention provides the scheme of being determined the A interface circuit number by MSC, link establishment speed is fast.
(3) the present invention also provides the different rates speech coding number of types of being used according to each sub-district by BSC to determine the scheme of the A interface circuit number that needs distribute, because BSC is an A interface circuit number of determining needs according to the rate speech release type of whole actual supports in sub-district in the group calling, therefore, can not cause distributing unnecessary A interface circuit, guarantee the effective rate of utilization of A access circuit resource.
Description of drawings
Fig. 1 sends assignment message for the embodiment of the invention one MSC to BSC, distributes many A interface circuit signaling process figure that support the different rates Speech version;
To be the embodiment of the invention two distribute the signaling process figure of notice MSC behind the A interface circuit by BSC to Fig. 2;
Fig. 3 shares the schematic diagram of corresponding A interface circuit for multiple voice rate version under the same BSC that adopts the inventive method realization;
Fig. 4 is one of a sharing A interface circuit realization provided by the invention system structural representation;
Fig. 5 is two structural representations that sharing A interface circuit provided by the invention realizes system.
Embodiment
The invention provides one of implementation method for sharing A interface circuit in a kind of trunked call, comprising:
Mobile services switching centre MSC determines the A interface circuit number that base station controller BSC is used in the group calling, and the corresponding rate speech release type of supporting of each A interface circuit, sends to BSC;
Whole sub-districts that BSC relates to group calling share to respectively on the corresponding A interface circuit of distribution by the rate speech release type of its support, and return the assignment results messages to MSC.
Below in conjunction with accompanying drawing said method of the present invention is described in detail.
Embodiment 1:
Send assignment message by MSC to BSC, distribute many A interface circuits of supporting the different rates Speech version.Idiographic flow comprises following concrete steps referring to shown in Figure 1:
After step 1, MSC received the group calling request, (Group Call Register obtained the correlation attribute information (when creating the group calling group, the attribute information that will organize stores among the GCR in advance) of group in GCR) from the Group Call Register of the attribute information that stores group; Include this in the attribute information of group and organize the information such as different rates Speech version type that whole sub-districts are supported.
Step 2, MSC organize the different rates Speech version number of types that whole sub-districts are supported according to this, determine the A interface circuit number of use; If that is: the different rates Speech version type of this group whole sub-districts support is 3, determine that then the A interface circuit number of using is 3.
Step 3, MSC send VGCS/VBS assignment request (VGCS/VBS ASSIGNMENTREQUEST) message to BSC, carry the CIC tabulation of the A interface circuit of distribution, indicate CIC and its corresponding rate speech release type information of supporting of each A interface circuit; For example:
CIC1, the corresponding rate speech release type of supporting is " a full-speed voice version 2 ";
CIC2, the corresponding rate speech release type of supporting is " a half-rate speech version 1 "
CIC3, the corresponding rate speech release type of supporting is " a full-speed voice version 3 ";
MSC is in the VGCS/VBS ASSIGNMENT REQUEST message that sends to BSC, bring BSC by channel type (Channel Type) cell with voice rate version informations all in this group calling, in VGCS/VBS ASSIGNMENT REQUEST message, increase simultaneously circuit identification code tabulation (Circuit Identity Code list) cell newly, MSC is passed to BSC for the CIC of all A interface circuits of this BSC distribution.The definition structure of Circuit Identity Code list such as following table 1 mark:
Table 1:
The definition of CICn is with the definition of " 3.2.2.2 Circuit Identity Code " among the 48008-741.
The 5th byte in the voice rate release type of CICn correspondence and the Channel Type cell " allow Speech version indication/data rate+transparency to indicate the order of (" Permitted speech version indication/datarate+transparency indicator ") corresponding, as shown in table 2 below:
Table 2:
Be the corresponding Octet 5 of CIC1, the corresponding Octet 5a of CIC2, and the like.
If whole number of cells that group calling relates to more for a long time, MSC can send many assignment messages to BSC.
MSC starts timer after sending VGCS/VBS ASSIGNMENT REQUEST message, thinks behind the timer expiry that BSC has returned all VGCS/VBS assignment results messages (VGCS/VBSASSIGNMENT RESULT).
After step 4, BSC receive above-mentioned assignment message, distribute corresponding A interface circuit; (Traffic Channel TCH) shares on the A interface circuit of supporting same type rate speech version with the wireless transmission channel of each sub-district of same type rate speech version; That is:
The BSC assigned identification codes is respectively three A interface circuits of " CIC1 ", " CIC2 " and " CIC3 ";
To support that the TCH Channel Sharing of whole sub-districts of " full-speed voice version 2 " is on the A interface circuit of " CIC1 " to identification code;
To support that the TCH Channel Sharing of whole sub-districts of " half-rate speech version 1 " is on the A interface circuit of " CIC2 " to identification code;
To support that the TCH Channel Sharing of whole sub-districts of " full-speed voice version 3 " is on the A interface circuit of " CIC3 " to identification code.
Step 5, BSC return VGCS/VBS assignment results messages to MSC, carry the CIC of corresponding A interface circuit of channel type information (i.e. the voice rate release type of Zhi Chiing), cell identity information and the use of support;
Step 6, MSC read the assignment object information that BSC returns behind timer expiry, the channel type according to the BSC that carries in the assignment results messages supports judges whether to have distributed and the unmatched unnecessary A interface circuit of channel type, if, execution in step 7;
Step 7, send to discharge the CIC notification message to MSC;
In this step, MSC sends newly-increased release CIC notice (Release CIC Notify) message on the calling control connection of SCCP (SCCP) agreement, carry the CIC information that needs to discharge and give BSC, Release CIC Notify message is defined as follows shown in the table 3:
Table 3
Cell (INFORMATION ELEMENT) Length (LEN)
Information type Message Type (Release CIC Notify) 00100111 ??octet?1
Length (length) ??octet?2
A interface circuit identification code tabulation (the A interface circuit that needs release) (Circuit Identity Code list) Octet 3-2n+2 (n is n CIC)
After step 8, BSC receive Release CIC Notify message,, discharge corresponding A interface circuit according to its A interface circuit identification code of carrying tabulation.
Embodiment 2:
By notifying MSC behind the BSC distribution A interface circuit,, comprise the steps: referring to Fig. 2
After step 1, MSC receive the group calling request, from the GCR of the attribute information that stores group, obtain the correlation attribute information (when creating the group calling group, the attribute information that will organize stores among the GCR in advance) of group; Include the information such as whole sub-districts that this group relates in the attribute information of group;
Step 2, MSC send the assignment message that carries whole cell informations to the BSC of correspondence;
Step 3, BSC add up the rate speech release type that whole sub-districts are supported; And determine the A interface circuit number that needs use in the group calling, and the corresponding rate speech release type of supporting of each A interface circuit according to the rate speech release type quantity that whole sub-districts are supported; And distribute corresponding A interface circuit, that is:
If the BSC statistics is that the different rates Speech version type that whole sub-districts are supported is 3, the rate speech release type of supporting is respectively: " full-speed voice version 2 ", " half-rate speech version 1 " and " full-speed voice version 3 ", determine that then the A interface circuit number of using is 3, and distribute:
Identification code is that the A interface circuit of " CIC1 " is supported " full-speed voice version 2 ";
Identification code is that the A interface circuit of " CIC2 " is supported " half-rate speech version 1 "
Identification code is that the A interface circuit of " CIC3 " is supported " full-speed voice version 3 ";
Step 4, BSC share to the TCH of each sub-district of same type rate speech version on the A interface circuit of supporting same type rate speech version; That is:
BSC will support that the TCH Channel Sharing of whole sub-districts of " full-speed voice version 2 " is on the A interface circuit of " CIC1 " to identification code;
BSC will support that the TCH Channel Sharing of whole sub-districts of " half-rate speech version 1 " is on the A interface circuit of " CIC2 " to identification code;
BSC will support that the TCH Channel Sharing of whole sub-districts of " full-speed voice version 3 " is on the A interface circuit of " CIC3 " to identification code;
Step 5, BSC return the assignment response message to MSC, carry the CIC (comprising " CIC1 ", " CIC2 " and " CIC3 ") and the corresponding voice rate version information of supporting of the A interface circuit that uses separately each sub-district;
" CIC1 " that step 6, MSC return BSC, the A interface circuit that " CIC2 " and " CIC3 " is corresponding insert in the meeting bridge.
The said method according to the present invention has realized that multiple voice rate version is shared corresponding A interface circuit under the same BSC, and its shared schematic diagram as shown in Figure 3.Express among Fig. 3:
Sub-district A, sub-district B and sub-district C support that the TCH Channel Sharing of these three sub-districts is supported the same A interface circuit " CIC 1 " of this kind rate speech release type with a kind of rate speech release type;
Sub-district X, sub-district Y and sub-district Z support that the TCH Channel Sharing of these three sub-districts is supported the same A interface circuit " CIC N " of this kind rate speech release type with a kind of rate speech release type.
Certainly, in the reality, the A interface circuit number of sub-district number and distribution can change, and Fig. 3 only is an example.
The said method embodiment 1 according to the present invention the invention provides one of realization system of sharing A interface circuit in a kind of trunked call, and its structural representation comprises mobile services switching centre MSC and base station controller BSC as shown in Figure 4.At least comprise among the described MSC:
The one A interface circuit determination module is determined the A interface circuit number that BSC uses in the group calling, and the corresponding rate speech release type of supporting of each A interface circuit;
The first assignment request message sending module sends the VGCS/VBS assignment request message, carries CIC tabulation and its corresponding rate speech release type information of supporting of the A interface circuit of determining;
The first assignment results messages receiving processing module receives the assignment results messages that BSC returns, and according to the CIC of the A interface circuit that carries in the assignment results messages, corresponding A interface circuit is inserted in the meeting bridge;
At least comprise among the described BSC:
The first assignment request message receiver module receives the VGCS/VBS assignment request message that MSC sends;
The one A interface circuit distribution module, according to the information of carrying in the described VGCS/VBS assignment request message, whole sub-districts that group calling is related to share to respectively on the corresponding A interface circuit of distribution by the rate speech release type of its support;
The first assignment results messages sending module returns VGCS/VBS assignment results messages to MSC, carries the channel type information of support, the CIC and the cell ID of the A interface circuit that used.
Can also comprise among the described MSC:
Unnecessary A interface circuit judges and the release command sending module, and the channel type that the BSC that carries in the assignment results messages of returning according to BSC supports judges whether to have distributed and the unmatched unnecessary A interface circuit of this channel type; If, send one to BSC and discharge the CIC notification message, carry the CIC information of the A interface circuit that needs release;
Also comprise among the described BSC:
Discharge A interface circuit Executive Module, receive the release CIC notification message that MSC issues, discharge corresponding A interface circuit.
The said method embodiment 2 according to the present invention, the invention provides sharing A interface circuit in the another kind of trunked call the realization system two, its structural representation comprises mobile services switching centre MSC and base station controller BSC as shown in Figure 5.At least comprise among the described MSC:
The second assignment request message sending module sends the VGCS/VBS assignment request message that does not comprise A interface circuit assignment information;
The second assignment results messages receiver module receives the assignment results messages that BSC returns, and according to the CIC of the A interface circuit that carries in the assignment results messages, corresponding A interface circuit is inserted in the meeting bridge;
At least comprise among the described BSC:
The second assignment request message receiver module receives the VGCS/VBS assignment request message that MSC sends, and when not having A interface circuit assignment information in judging assignment request message, starts the 2nd A interface circuit determination module;
The 2nd A interface circuit determination module, according in the group calling all the voice rate release type quantity supported of sub-districts determine the A interface circuit number of use;
The 2nd A interface circuit distribution module, whole sub-districts that group calling is related to share on the corresponding A interface circuit respectively by the rate speech release type of its support;
The second assignment results messages sending module returns the assignment results messages to MSC, carries the CIC and the corresponding voice rate version information of the A interface circuit that uses each sub-district.
In sum, adopt the present invention, same group of different districts that is distributed under the same BSC can be adopted and answer the different rates speech coding, thereby makes network to take all factors into consideration voice quality and radio channel resource and to determine best rate speech coding mode according to the actual conditions of different districts.
The embodiment of the invention 1 is determined the scheme of A interface circuit number by MSC, and link establishment speed is fast.
The embodiment of the invention 2 provides the scheme of being determined the A interface circuit number of distribution by BSC, because BSC is an A interface circuit number of determining needs according to the rate speech release type of whole actual supports in sub-district in the group calling, therefore, can not cause distributing unnecessary A interface circuit, guarantee the effective rate of utilization of A access circuit resource.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (14)

1, implementation method for sharing A interface circuit in a kind of trunked call is characterized in that, comprising:
A1, mobile services switching centre MSC determine the A interface circuit number that base station controller BSC is used in the group calling, and the corresponding rate speech release type of supporting of each A interface circuit, send to BSC;
Whole sub-districts that B1, described BSC relate to group calling share to respectively on the corresponding A interface circuit of distribution by the rate speech release type of its support, and return the assignment results messages to MSC.
2, the method for claim 1 is characterized in that, in the described steps A 1, after MSC receives the group calling request, obtains the attribute information of this group and determine described A interface circuit number from Group Call Register GCR; And the cic circuit identification code CIC tabulation of carrying the A interface circuit of determining by voice group call service VGCS/ Voice Broadcast Service VBS assignment request message, described tabulation indicates the CIC and the corresponding rate speech release type information of supporting of each A interface circuit of each A interface circuit, sends to described BSC.
3, method as claimed in claim 2 is characterized in that, when creating the group calling group, the attribute information of this group is stored among the GCR;
After described MSC receives the group calling request, determine the A interface circuit number of use according to the rate speech release type quantity of this group support in the attribute information of storing among the GCR.
4, method as claimed in claim 3 is characterized in that, newly-increased CIC tabulation cell carries described CIC list information in described assignment request message.
5, method as claimed in claim 4 is characterized in that, carries the corresponding rate speech release type information of supporting of A interface circuit of distribution in the channel type cell of described assignment request message.
6, method as claimed in claim 5 is characterized in that, by described CIC tab sequential, carries the rate speech release type information that corresponding A interface circuit is supported in the 5th byte of described channel type cell.
7, as the described method of the arbitrary claim of claim 1-6, it is characterized in that, also comprise:
Described BSC carries the channel type information that BSC supports in the assignment results messages that described MSC returns;
Described MSC judges whether to have distributed and the unmatched unnecessary A interface circuit of channel type according to the channel type that BSC supports; If then discharge the A interface circuit of unnecessary distribution.
8, method as claimed in claim 7 is characterized in that, described MSC is calling out newly-increased release CIC notification message of transmission on the control connection, and the CIC information of carrying the A interface circuit that needs release sends to described BSC;
Described BSC discharges corresponding A interface circuit after receiving and discharging the CIC notification message.
9, method as claimed in claim 7 is characterized in that, described MSC starts timer after sending assignment request message;
Behind timer expiry, the assignment results messages that inquiry BSC returns has judged whether to distribute unnecessary A interface circuit.
10, implementation method for sharing A interface circuit in a kind of trunked call is characterized in that, comprising:
After A2, BSC receive the VGCS/VBS assignment request of MSC transmission, determine the A interface circuit number of use according to the voice rate release type quantity of whole sub-districts support in the group calling;
Whole sub-districts that B2, described BSC relate to group calling share on the corresponding A interface circuit respectively by the rate speech release type of its support, and return the assignment results messages to MSC.
11, method as claimed in claim 10 is characterized in that, described BSC carries the CIC and the corresponding voice rate version information of the A interface circuit that uses each sub-district in the assignment results messages that described MSC returns;
Described MSC inserts corresponding A interface circuit in the meeting bridge according to the CIC of the A interface circuit that carries in the assignment results messages.
12, the realization system of sharing A interface circuit in a kind of trunked call comprises mobile services switching centre MSC and base station controller BSC, it is characterized in that, comprises at least among the described MSC:
The one A interface circuit determination module is determined the A interface circuit number that BSC uses in the group calling, and the corresponding rate speech release type of supporting of each A interface circuit;
The first assignment request message sending module, send the VGCS/VBS assignment request message, carry the CIC tabulation of the A interface circuit of determining, described tabulation indicates the CIC and the corresponding rate speech release type information of supporting of each A interface circuit of each A interface circuit;
The first assignment results messages receiving processing module receives the assignment results messages that BSC returns, and according to the CIC of the A interface circuit that carries in the assignment results messages, corresponding A interface circuit is inserted in the meeting bridge;
At least comprise among the described BSC:
The first assignment request message receiver module receives the VGCS/VBS assignment request message that MSC sends;
The one A interface circuit distribution module, according to the information of carrying in the described VGCS/VBS assignment request message, whole sub-districts that group calling is related to share to respectively on the corresponding A interface circuit of distribution by the rate speech release type of its support;
The first assignment results messages sending module returns VGCS/VBS assignment results messages to MSC, carries the channel type information of support, the CIC and the cell ID of the A interface circuit that used.
13, system as claimed in claim 12 is characterized in that, also comprises among the described MSC:
Unnecessary A interface circuit judges and the release command sending module, and the channel type that the BSC that carries in the assignment results messages of returning according to BSC supports judges whether to have distributed and the unmatched unnecessary A interface circuit of this channel type; If, send one to BSC and discharge the CIC notification message, carry the CIC information of the A interface circuit that needs release;
Also comprise among the described BSC:
Discharge A interface circuit Executive Module, receive the release CIC notification message that MSC issues, discharge corresponding A interface circuit.
14, the realization system of sharing A interface circuit in a kind of trunked call comprises mobile services switching centre MSC and base station controller BSC, it is characterized in that, comprises at least among the described MSC:
The second assignment request message sending module sends the VGCS/VBS assignment request message that does not comprise A interface circuit assignment information;
The second assignment results messages receiver module receives the assignment results messages that BSC returns, and according to the CIC of the A interface circuit that carries in the assignment results messages, corresponding A interface circuit is inserted in the meeting bridge;
At least comprise among the described BSC:
The second assignment request message receiver module receives the VGCS/VBS assignment request message that MSC sends, and when not having A interface circuit assignment information in judging assignment request message, starts the 2nd A interface circuit determination module;
The 2nd A interface circuit determination module, according in the group calling all the voice rate release type quantity supported of sub-districts determine the A interface circuit number of use;
The 2nd A interface circuit distribution module, whole sub-districts that group calling is related to share on the corresponding A interface circuit respectively by the rate speech release type of its support;
The second assignment results messages sending module returns the assignment results messages to MSC, carries the CIC and the corresponding voice rate version information of the A interface circuit that uses each sub-district.
CNB200610075199XA 2006-04-30 2006-04-30 Method and system for realization of sharing A interface circuit in cluster call CN100455071C (en)

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WO1994014289A1 (en) * 1992-12-17 1994-06-23 Nokia Telecommunications Oy A method for maintaining a group call
CN1625293A (en) * 2003-12-04 2005-06-08 华为技术有限公司 Method for realizing group calling roaming of group service
CN1645947A (en) * 2005-01-07 2005-07-27 广东移动通信有限责任公司 Double speed rate channel use with user attribute relation
CN1728874A (en) * 2004-07-28 2006-02-01 华为技术有限公司 Method for building service of private call

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994014289A1 (en) * 1992-12-17 1994-06-23 Nokia Telecommunications Oy A method for maintaining a group call
CN1625293A (en) * 2003-12-04 2005-06-08 华为技术有限公司 Method for realizing group calling roaming of group service
CN1728874A (en) * 2004-07-28 2006-02-01 华为技术有限公司 Method for building service of private call
CN1645947A (en) * 2005-01-07 2005-07-27 广东移动通信有限责任公司 Double speed rate channel use with user attribute relation

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