CN100484271C - Method for raising group calling system reliability, group calling register and relay MSC - Google Patents
Method for raising group calling system reliability, group calling register and relay MSC Download PDFInfo
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- CN100484271C CN100484271C CNB2006101574225A CN200610157422A CN100484271C CN 100484271 C CN100484271 C CN 100484271C CN B2006101574225 A CNB2006101574225 A CN B2006101574225A CN 200610157422 A CN200610157422 A CN 200610157422A CN 100484271 C CN100484271 C CN 100484271C
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Abstract
A method for raising reliability of multi-calling system includes setting detection mechanism between relay MSC and anchor MSC for making relay MSC be able to sense state of anchor MSC and for making relay MSC issue out multi-calling independently when fault of anchor MSC is judged in order to raise reliability of multi-calling system.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of method that improves group calling system reliability, Group Call Register and relay MSC.
Background technology
Voice group call service (VGCS, Voice group call service) is to realize that a plurality of people can talk (6 speakers at the most), can the understand business of (hearer's quantity is unrestricted) of more people; Voice Broadcast Service (VBS, Voice broadcast service) is to realize 1 people's speech (having only 1 speaker), a plurality of people's obedient (hearer's quantity is unrestricted) business.VGCS, VBS business realizing the voice communication mode of some people speech, the point-to-multipoint of listening in many ways, broken through the limitation of point-to-point communication, can set up calling fast.
Group call region is meant the geographic range that the VGCS service communication is covered, and is base unit with radio honeycomb sub-district (Cell), can be made up of one or more cellular cells.These sub-districts can belong to same mobile switching centre (MSC, Mobile Switching Center), also can belong to different MS C.
(Group ID G-ID) determines with group call region is unique a specific group calling communication by the group identifier.G-ID and group call region are called group call reference altogether, i.e. the unique definite group calling communication of group call reference.G-ID identifies the function of this group, and promptly the member by which identity participates in; A mobile subscriber a plurality of G-ID that can contract simultaneously, and different priority is set to them.
Group Call Register (GCR, Group call register) realizes group-calling service with mobile services switching centre (MSC), wherein GCR is used for preserving the group calling attribute data, also preserve whether ongoing sign of current group calling, when group calling is initiated, when MSC will initiate the attribute data of group calling to the GCR inquiry, GCR is provided with the state of initiation group calling for carrying out (On-going), when group calling finished, MSC notified GCR, and the state that GCR is provided with this group calling is idle (Idle).
When group calling was initiated, MSC was when GCR inquiry group calling attribute data, if GCR checks that the state of the group calling that will initiate is On-going, then notifying this group calling of MSC is On-going.If service-user is initiated group calling, then the MSC refusal is called out, and notice calling business user " user is busy "; If the dispatcher initiates group calling, then MSC directly is linked into this dispatcher in the group calling of On-going.
When group call region surpasses the coverage of a mobile switching centre, have a plurality of MSC in this group calling, controlling MSC wherein is anchor mobile switching centre (Anchor MSC), and other MSC are Tandem Mobile Switching Center (Relay MSC).Anchor MSC is responsible for whole calling, and the data of management comprise group call cell tabulation in group calling attribute, dispatcher tabulation, Relay MSC tabulation, the Anchor MSC, group calling Status Flag (whether ongoing).The data that Relay MSC is in charge of comprise group call cell tabulation in the Relay MSC, Anchor MSC sign, group calling Status Flag (whether ongoing).During a VGCS/VBS calls out, a plurality of Relay MSC can be arranged, also can not have Relay MSC.
Anchor MSC is in charge of and safeguards whole group calling as controlling MSC.When service-user or dispatcher initiated group calling, call request was routed to Anchor MSC, and Anchor MSC is responsible for setting up whole group calling, comprised the connection that is established to Relay MSC, called dispatcher.
In technique scheme, Anchor MSC is the controlling MSC of group calling, is in charge of whole calling.If Anchor MSC breaks down, then group calling can't be initiated, and perhaps in group-calling process, Anchor MSC breaks down, and then whole group calling all needs to discharge.
For some system reliability is required than higher application,, can adopt two net redundancy techniques such as the train scheduling on the railway.Use active and standby two cover networks, when a cover network portion equipment or an armamentarium fault, the equipment of another set of network can be enabled and continue to provide service, the operation of not influence system.
The networking mode of active and standby usefulness network as shown in Figure 1.
Wherein, major network is made up of the base station sub-system BSS1 of MSC1 and MSC1 control, is equipped with net and is made up of the BSS2 that MSC2 and MSC2 control.Major network and net is overlappingly fully worked simultaneously.
For group-calling service, needing configuration MSC1 be Anchor MSC, and MSC2 is Relay MSC, and perhaps MSC2 is Anchor MSC, and MSC1 is Relay MSC, like this, after group calling is initiated, major network and be equipped with net and can move simultaneously.If the BSS1 of major network breaks down, the BSS2 that is equipped with net still can provide professional, and vice versa.
But in above-mentioned pair of net redundancy technique, before group calling was initiated, if Anchor MSC breaks down, then group calling can't be initiated, and in group calling was carried out, if Anchor MSC breaks down, then whole group calling all needed to discharge.No matter be MSC1 or MSC2 Anchor MSC as group calling, when its fault, major network and be equipped with the group calling in the net or can't initiate, perhaps whole service all is released in group-calling process, the whole system paralysis, two net backup functionalitys lost efficacy, the reliability step-down of system.
Summary of the invention
In order to address the above problem, the present invention makes relay MSC can detect the anchor MSC status by increase testing mechanism between relay MSC and anchor MSC, and after anchor MSC fault is learnt in judgement, initiate group calling separately or proceed group calling by relay MSC, improved the reliability of group Call system.
Specific as follows in technical solution of the present invention:
If when group calling was initiated, Anchor MSC fault can't be initiated group calling, the present invention program is as follows:
The GCR of Relay MSC is provided with Anchor MSC status sign and preserves the data of being managed by Anchor MSC;
Relay MSC detects and record Anchor MSC status;
When group calling is initiated, be fault if Relay MSC detects the Anchor MSC status, then Relay MSC is according to the described data by Anchor MSC management that its GCR preserves, and is established to the calling control connection of BSC and to the resource control connection of sub-district.
Perhaps, if in group calling is carried out, Anchor MSC fault, the present invention program is as follows:
The GCR of Relay MSC is provided with Anchor MSC status sign and preserves the data of being managed by Anchor MSC;
Relay MSC detects and record Anchor MSC status;
When group calling was initiated, Relay MSC obtained the data by Anchor MSC management from its GCR;
After group calling is set up, if Relay MSC detects Anchor MSC and breaks down, keep group-calling service, discharge Relay MSC and be connected with speech channel with MAP between the Anchor MSC and be connected, set up the connection of RelayMSC, carry out up management, safeguard non-Active Timer to the dispatcher.
Simultaneously, the present invention also provides a kind of Group Call Register, and described Group Call Register comprises the group calling data memory module, and Anchor MSC status memory module and Anchor MSC status upgrade trigger module;
Described group calling data memory module is preserved the data by Anchor MSC management;
Described Anchor MSC status memory module is according to detected Anchor MSC status, and the state of storage Anchor MSC is a fault or normal;
Described Anchor MSC status upgrades the state of trigger module according to current Anchor MSC, triggers the Anchor MSC status information of storing in the Anchor MSC status memory module of upgrading.
In addition, the present invention also provides a kind of Relay MSC, and described Relay MSC comprises Anchor MSC status detection module, Group Call Register and group calling initiation/maintenance module;
Described Anchor MSC status detection module detects the Anchor MSC status, and with Anchor MSC status notice Group Call Register;
When if group calling is initiated, when Anchor MSC status detection module detects the Anchor MSC status and is fault, group calling initiation/maintenance module is according to the group calling attribute data and the cell list of Group Call Register, is established to the calling control connection of BSC and to the resource control connection of sub-district;
If group calling is carried out in the process, it is fault that Anchor MSC status detection module detects the Anchor MSC status, then described group calling initiation/maintenance module keeps group-calling service, discharges Relay MSC and is connected with speech channel with MAP between the AnchorMSC and is connected, and sets up the connection of Relay MSC to the dispatcher.
The invention has the beneficial effects as follows: realized after Anchor MSC fault, initiating group calling separately or proceeding group calling, improved the reliability of group Call system, promoted group calling user impression by Relay MSC.
Description of drawings
Fig. 1 is the active and standby networking mode schematic diagram of using in the prior art;
Fig. 2 be preferable first execution mode of the present invention when Anchor MSC fault, the signaling process figure that initiates group calling by Relay MSC separately;
Fig. 3 be preferable second execution mode of the present invention in group calling is carried out, when Anchor MSC fault, Relay MSC proceeds the signaling process figure of group calling;
Fig. 4 is the signaling process figure of better embodiment of the present invention after Anchor MSC fault recovery;
Fig. 5 is a better embodiment Group Call Register installation drawing of the present invention;
Fig. 6 is a better embodiment Relay MSC installation drawing of the present invention.
Embodiment
Below in conjunction with accompanying drawing, preferable embodiment of the present invention is described in detail.
In order to improve the reliability of group Call system, after Anchor MSC fault, initiate group calling separately or proceed group calling by Relay MSC, realize by following embodiment:
In group-calling service, MSC and GCR can be entities, also can be two separate network elements, and in preferred embodiment of the present invention, GCR is integrated among the MSC.Because Group Call Register GCR has defined the various attributes of group calling.Specific embodiments of the invention increase the sign (sign Anchor MSC is a fault or normal) of Anchor MSC status and preserve the data of being managed by AnchorMSC in the GCR of Relay MSC, simultaneously between Anchor MSC and Relay MSC, increase testing mechanism, concrete detection method is: Relay MSC regularly (as 5 seconds) sends verification message to Anchor MSC, Relay MSC receives the response message of Anchor MSC in the time of setting (as 5 seconds), and expression AnchorMSC state is normal; If in the time of above-mentioned setting, do not receive the response message of Anchor MSC, expression Anchor MSC fault.Like this, when Anchor MSC breaks down, Relay MSC perception in time.Relay MSC perceives after Anchor MSC breaks down, and the state that AnchorMSC among the GCR is set is a fault.After Relay MSC perceived Anchor MSC fault recovery, the state that Anchor MSC among the GCR at its place is set was for normal.
When not initiating group calling as yet, Anchor MSC breaks down, and initiates group calling separately by Relay MSC, and preferable first execution mode of the present invention is as follows:
When service-user is initiated group calling in Relay MSC, Relay MSC gets the group calling attribute data to the GCR at its place, if the state of the Anchor MSC that writes down among the GCR is a fault, then GCR returns group calling attribute data, non-Active Timer duration and cell list to RelayMSC.There is not Anchor MSC address in the message that Relay MSC returns according to GCR, judging needs to initiate separately group calling, the group calling attribute data and the cell list that return according to GCR, be established to the calling control connection of BSC (base station controller is arranged in base station sub-system BSS) and to the resource control connection of sub-district.Group calling in the Relay MSC is set up separately.This Relay MSC independently carries out up management behind the call setup.
As shown in Figure 2, the flow process of initiating group calling separately by relay MSC after anchor MSC fault is described in detail as follows:
First: the detection of Anchor MSC current state
Step 201: it is fault that the Anchor MSC status is set;
Among Fig. 2, record the state (fault/normal) of Anchor MSC (MSC-A) among the GCR (GCR-R) of Relay MSC (MSC-R).After the normal startup of system, the state of the Anchor MSC that writes down among the GCR-R is for normal.In system's running, Relay MSC regularly (as 5 seconds) sends verification message to Anchor MSC, and Relay MSC receives the response message of Anchor MSC in the time of setting (as 5 seconds), and expression Anchor MSC status is normal; If in the time of above-mentioned setting, do not receive the response message of AnchorMSC, expression Anchor MSC fault, MSC-R detects MSC-A (Anchor MSC) fault, and the state of the current MSC-A of notice GCR-R is a fault.GCR-R is a fault with the state refresh of the MSC-A of record.
Second portion: Relay MSC initiates the signaling process of group calling separately
The service-user that roams in the Relay MSC is dialed group ID request initiation group calling, and signaling process is described below:
Step 202: request distributes proprietary signaling channel;
Terminal is being distributed a proprietary signaling channel to BSS-R (base station sub-system in the Relay MSC) channel request message RACH (CHAN_REQ) request on the Random Access Channel.
Step 203: assignment immediately;
BSS is SDCCH of this terminal distribution (Standalone Dedicated Channel, Dedicated Control Channel) channel, sends the message use for this terminal is follow-up to network.
Step 204: service request;
Terminal sends a SABM (Set AsynchronousBalanced Mode is provided with Asynchronous Balanced Mode) frame to BSS-R on the SDCCH channel, wherein comprise business request information.After BSS-R receives this SABM frame, return a UA (Unnumbered Acknowledge, link setup and the approval of withdrawing chain) frame, comprise the content identical, to the foundation of terminal check link with the SABM frame to terminal.
Step 205: send holostrome three information;
BSS-R uses up the business request information (SERV_REQ) that holostrome three information (COM_L3_INFO) carried terminal reports, and sends to MSC.
Step 206: confirm;
BBS-R sends acknowledge message UA (SERV_REQ) to MS, comprises the content identical with the SABM frame, to the foundation of terminal check link.
Step 207: handle the request of access;
MSC-R checks whether validated user of user that request makes a call to VLR-R (VLR Visitor Location Register).
Step 208: handle and insert response;
VLR-R is to MSC-R echo check result (PROC_ACC_ACK).
Step 209: authentication and encryption;
Expression is to calling subscriber's authentication and ciphering process (Authentication﹠amp; Ciphering).
Step 210: set up and call out;
Terminal sends this message request to MSC-R and sets up calling, comprises called number in the message and is group ID.
Step 211: outbound call sends information;
MSC-R checks the group ID that whether has contracted the calling subscriber group-calling service and desire initiate to VLR-R.
Step 212: finish calling;
If checking, passes through VLR-R, i.e. calling subscriber's group-calling service of having contracted, and the group ID of request is legal, just returns to MSC-R and finishes message related to calls.Also comprise the data that the user contracts in the message.
Step 213:GCR inquiry;
State from group calling to GCR-R inquiry desire and group calling attribute data that MSC-R initiates.The data that write down among the GCR-R comprise: group calling state (free time or well afoot, if call out underwayly, then GCR-R returns refusal), group calling attribute data (priority, cryptographic algorithm, channel type etc.), non-Active Timer duration, cell list etc.If the group calling state is idle, it is well afoot that GCR-R at first is provided with the group calling state, is for further processing again.
GCR-R checks the state of the Anchor MSC of its record, return GCR inquiry response (GCR_INT_ACK) message of carrying different content according to the difference of Anchor MSC status: if the state of Anchor MSC then comprises Anchor MSC address for normal among the GCR_INT_ACK; If the state of Anchor MSC is a fault, then comprise group calling attribute data, non-Active Timer duration and cell list etc. among the GCR_INT_ACK.
Step 214:GCR inquiry response;
GCR-R returns Query Result to MSC-R.If what GCR-R returned is refusal, MSC-R will refuse the calling that service-user is initiated.
If what GCR-R returned is the GCR_INT_ACK message of group calling attribute data, non-Active Timer duration and cell list, after then MSC-R receives this message, begin to set up group calling, be calling business user assignment dedicated channel earlier.
Step 215: assignment request;
MSC-R is to BSS-R transmitting channel assignment request message (ASS_REQ), and indication BSS-R is that calling business user distributes the private radio Traffic Channel.
Step 216: Channel Mode Modify;
After BSS-R receives the channel assignment request, according to the assignment request is that calling business user distributes radio traffic channel, to calling business user transmitting channel schema modification message (CH_MOD_MODIFY), be linked on the radio traffic channel of being distributed then with the indication calling business user.
Step 217: Channel Mode Modify response;
Calling business user is according to Channel Mode Modify message, insert new channel after, to BSS-R Return Channel schema modification response message (CH_MOD_MODIFY_ACK).
Step 218: assignment is finished;
BSS-R finishes notice (ASS_COMP) to the assignment of MSC-R Return Channel after receiving the Channel Mode Modify response, and the indication calling business user has been assigned to the private radio Traffic Channel.
After the dedicated channel assignment of calling business user was finished, MSC-R was established to the calling control connection of each BSC in the group call region and arrives the resource control connection of each sub-district in the group call region.
Step 219: group calling is set up;
MSC-R sends group calling to BSS-R and sets up message (VGCS_SETUP), and the BSC that requires BSS-R is that the calling control connection is set up in group calling.
Step 220: response is set up in group calling;
After the calling control connection was set up and finished, BSS-R returned group calling to MSC-R and sets up response message (VGCS_SETUP_ACK), and MSC-R begins to be established to the resource control connection of each sub-district under interior this BSS of group call region.
Step 221: group calling assignment request;
MSC-R sends group calling assignment request message (VGCS_ASS_REQ) to BSS-R, and request BSS-R is that group call cell is set up group-calling channel.
Step 222: group calling assignment result;
After group-calling channel was set up and finished, BSS-R returned group-calling channel to MSC-R and sets up result (VGCS_ASS_RESULT).
Step 223: connect;
After group calling was set up and finished, MSC-R sent connection message (CONNECT) to calling business user, and the indication calling business user can begin speech.
What above-mentioned preferable first execution mode was described is that Anchor MSC breaks down when group calling is initiated, and is set up the process of group calling separately by Relay MSC.But in actual applications, also might carry out in the process in group calling, Anchor MSC breaks down, and then the process of this group calling is can following second better embodiment described.
Proceed group calling by Relay MSC, specific embodiments of the invention are as follows:
When group calling was initiated, Relay MSC obtained the data by former Anchor MSC management from GCR, comprise the group calling attribute data, the permissions list and the non-Active Timer duration of dispatcher's tabulation, dispatcher's terminating group.
After group calling is set up, break down, keep group-calling service if Relay MSC perceives Anchor MSC, discharge with Anchor MSC between MAP be connected with speech channel and be connected, be established to dispatcher's connection, independently carry out up management, safeguard non-Active Timer.
As shown in Figure 3, the message flow of realizing this scheme is described below:
After group calling was set up, start detection mechanism between Relay MSC and the Anchor MSC was used for detecting whether fault of opposite end MSC.If Anchor MSC fault after Relay MSC detects, is carried out following processing:
Step 301: discharge with Anchor MSC between MAP be connected with speech channel and be connected;
Discharge with Anchor MSC between MAP be connected with speech channel and be connected, also discharge the resource that this intra-office is correlated with simultaneously;
Step 302: the connection that is established to the dispatcher;
Be established to dispatcher's connection, use the priority when initiating group calling.If failure is set up in the connection to the dispatcher, can attempt rebuliding.The dispatcher connect set up successfully after, have the dispatcher of terminating group authority can use the DTMF sign indicating number to finish this group calling.
Step 303,304: start the non-Active Timer of group calling, indicate the up free time;
If there do not have service-user to take in this MSC to be up, with up free time, the non-Active Timer of startup group calling of being masked as in this MSC; If there have service-user to take in this MSC to be up, start up protection timer;
Step 305: up free time;
BSS-R connects in main signaling and repeats to send this connectionless RR (RadioResources, Radio Resource) message on (FACCH), notifies all up free time of group membership's terminal (UPLINK_FREE).
Step 306: up access;
Terminal uses random access procedure to send this message (UPLINK_ACCESS) on group-calling channel is up, can repeat to send.
Step 307: upstream request;
To MSC indication upstream request (UPLINK_REQUEST).When BSC receives a plurality of up access message, only transmit a upstream request message to MSC.
Step 308: upstream request allows;
On group-calling channel is descending, respond upstream request, comprise terminal and be used for solving information, just a required parameter (relevant) and physical message (using) in the up transmission information of group-calling channel with UPLINK_ACCESS to the information and the up access contention of Network Synchronization.After receiving that upstream request allows (VGCS_UPLINK_GRANT), relevant terminal can begin directly to send voice.Stop to send UPLINK_FREE message this moment immediately.
Step 309: up busy;
On FACCH, send this connectionless RR message, notify all group membership's terminals up busy.
Step 310: Asynchronous Balanced Mode (layer three message) is set;
Asynchronous Balanced Mode (layer three message) is set, SABM (L3msg), this step is set up layer two and is connected, and comprises layer three information classmark (terminal capability) and terminal iidentification.
Need to prove: the order of UPLINK_BUSY message and SABM message is separate.
Step 311: link setup is confirmed (layer three message);
Confirm that layer two connects, comprise layer three information (L3msg) identical with SABM for competition solves.
Step 312: upstream request is admitted;
Upstream request is admitted message (UPLINK_REQUEST_ACKNOWLEDGE), and MSC-R confirms up to a BSC.If there are a plurality of BSC requests up, refuse other all upstream request with UPLINK_REJECT_CMD message, only accept one.MSC-R will not apply for that up BSC sends UPLINK_SEIZED_CMD message to every other.After receiving UPLINK_SEIZED_CMD message, it is up busy that BSC will broadcast a UPLINK_BUSY message indication.
Step 313: upstream request is confirmed;
Upstream request acknowledge message (UPLINK_REQUEST_CONFIRM), BSS-R confirms up use to MSC-R, the carried terminal sign.
Step 314: regain extraneous information from VLR-R;
Step 315: group calling extraneous information;
MSC-R sends the extraneous information (VGCS_ADD_INFO) of new speaker's service-user to all BSC.BSC comprises the ADD_INFO message of extraneous information to all hearer's broadcasting then.
Step 316,317,318: stop the non-Active Timer of multicast, start up protection timer;
After the up success of service user applicating, stop the non-Active Timer of group calling, start up protection timer, up in this MSC is masked as busy;
Need to prove in addition,, discharge group calling if the non-Active Timer of group calling is overtime; If up protection timer expiry carries out up overtime protection and handles.
No matter when not initiating group calling as yet, Anchor MSC breaks down, and initiates the situation of group calling separately by Relay MSC, and still Anchor MSC breaks down in group calling is carried out, proceed the situation of group calling by Relay MSC, the disposition after Anchor MSC fault recovery is as follows:
If the calling in the Relay MSC is also underway, this Relay MSC initiatively is established to the calling of AnchorMSC.After Anchor MSC receives the foundation request of Relay MSC, carry out normal group calling and set up, set up sub-district, dispatcher and Relay MSC in the group call region under this MSC.The Relay MSC of well afoot directly joins in the group calling of Anchor MSC foundation.Idiographic flow is seen accompanying drawing 4, is described below:
Step 40l: the initial ISUP that is established to Anchor MSC connects;
The initial ISUP that Relay MSC is established to Anchor MSC connects.
Step 402: group calling is prepared;
Anchor MSC sends the group calling attribute data to Relay MSC, requires Relay MSC to set up group calling.
Step 403: request group calling number;
To VLR request group calling number.
Step 404: return the group calling number;
VLR returns the group calling number.
Step 405: acknowledge message is prepared in group calling;
The group calling number is issued Anchor MSC.
Step 406: (from MSC-A) connects;
The shared ISUP that sets up between Anchor MSC and the Relay MSC connects.
Step 407: discharge the group calling number;
Request VLR discharges the group calling number.
Step 408: connect (to MSC-A);
Affirmation is from the shared ISUP establishment of connection of Anchor MSC.
Step 409: send group calling end signal (IMSI, add info);
Notice Anchor MSC can begin session.The IMSI that initiates service-user is issued AnchorMSC, initiate service-user and can stop group calling; If the network support caller priority can comprise caller priority in message; And, if any, also to comprise current speaker's additional information.
Step 410: connect (from MSC-A);
Confirm initial ISUP establishment of connection;
Step 411: discharge (to MSC-A);
Discharge initial ISUP and connect, cause value is ' normal, unspecified '.
Fig. 5 is a better embodiment Group Call Register installation drawing of the present invention, and described Group Call Register comprises Anchor MSC status memory module, the Anchor MSC status upgrades trigger module and group calling data memory module;
Described group calling data memory module is preserved the data by Anchor MSC management, comprises the permissions list of group calling attribute data, non-Active Timer duration, cell list, group calling dispatcher tabulation, dispatcher's terminating group;
Described Anchor MSC status memory module is according to the detected Anchor MSC status of the Relay MSC under the Group Call Register, and the state of storage Anchor MSC is a fault or normal;
Described Anchor MSC status upgrades the notice about Anchor MSC status of trigger module according to the Relay MSC under the Group Call Register, triggers the Anchor MSC status information of storing in the Anchor MSC status memory module of upgrading.
Fig. 6 is a better embodiment Relay MSC installation drawing of the present invention, and described Relay MSC comprises Anchor MSC status detection module and group calling initiation/maintenance module;
Described Anchor MSC status detection module detects the Anchor MSC status, and with the Group Call Register under the Anchor MSC status notice;
Described group calling initiation/maintenance module is when Anchor MSC status detection module detects the Anchor MSC status and is fault, the group calling attribute data and the cell list that return according to affiliated Group Call Register, be established to the calling control connection of BSC and, initiate group calling separately to the resource control connection of sub-district;
If group calling is carried out in the process, it is fault that Anchor MSC status detection module detects the Anchor MSC status, then described group calling initiation/maintenance module keeps group-calling service, discharge with Anchor MSC between MAP be connected with speech channel and be connected, be established to dispatcher's connection, carry out up management, safeguard non-Active Timer.
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, a kind of method that improves group calling system reliability is characterized in that, may further comprise the steps:
The GCR of Relay MSC is provided with Anchor MSC status sign and preserves the data of being managed by Anchor MSC;
Relay MSC detects and record Anchor MSC status;
When group calling is initiated, be fault if Relay MSC detects the Anchor MSC status, then Relay MSC is according to the described data by Anchor MSC management that its GCR preserves, and is established to the calling control connection of BSC and to the resource control connection of sub-district.
2, the method for the raising group calling system reliability described in claim 1 is characterized in that, the data that the GCR of described Relay MSC preserves by Anchor MSC management comprise group calling attribute data, non-Active Timer duration and cell list.
3, the method for the raising group calling system reliability described in claim 1 is characterized in that, described Relay MSC detects and the method for record Anchor MSC status is specially:
Relay MSC regularly sends verification message to Anchor MSC, and Relay MSC receives the response message of Anchor MSC in setting-up time, and it is normal then to detect the Anchor MSC status; If do not receive the response message of Anchor MSC in setting-up time, then detecting the Anchor MSC status is fault;
After Relay MSC detected Anchor MSC and breaks down, the state that the Anchor MSC among its GCR is set was a fault;
After Relay MSC detected Anchor MSC fault recovery, the state that the Anchor MSC among its GCR is set was for normal.
4, the method for the raising group calling system reliability described in claim 1 or 2, it is characterized in that, when described group calling is initiated, if it is fault that Relay MSC detects the Anchor MSC status, Relay MSC is according to the described data by Anchor MSC management that its GCR preserves, and is established to the calling control connection of BSC and is specially to the process of the resource control connection of sub-district:
The user initiates group calling in Relay MSC, if the state of the Anchor MSC that writes down among its GCR is a fault, then return in the message of Relay MSC and do not have Anchor MSC address, the group calling attribute data that Relay MSC returns according to GCR, non-Active Timer duration and cell list are established to the calling control connection of BSC and to the resource control connection of sub-district.
5, the method for the raising group calling system reliability described in claim 1 or 2, it is characterized in that, described method further comprises: after group calling was set up, Relay MSC carried out the group call uplink management according to the group calling attribute data among its GCR, non-Active Timer duration and cell list.
6, the method for the raising group calling system reliability described in claim 1, it is characterized in that, described method further comprises: after the Anchor MSC fault recovery, if the calling in the Relay MSC is also underway, then this Relay MSC sends setup requests to Anchor MSC;
After Anchor MSC receives the setup requests of Relay MSC, set up sub-district, dispatcher and Relay MSC in the group call region under this MSC; Calling out ongoing Relay MSC joins in the group calling of Anchor MSC foundation.
7, a kind of method that improves group calling system reliability is characterized in that, may further comprise the steps:
The GCR of Relay MSC is provided with Anchor MSC status sign and preserves the data of being managed by Anchor MSC;
Relay MSC detects and record Anchor MSC status;
When group calling was initiated, Relay MSC obtained the data by Anchor MSC management from its GCR;
After group calling is set up, if Relay MSC detects Anchor MSC and breaks down, keep group-calling service, discharge Relay MSC and be connected with speech channel with MAP between the Anchor MSC and be connected, set up the connection of RelayMSC, carry out up management, safeguard non-Active Timer to the dispatcher.
8, the method for the raising group calling system reliability described in claim 7, it is characterized in that the data that the GCR of described Relay MSC preserves by Anchor MSC management comprise group calling dispatcher tabulation, the permissions list of dispatcher's terminating group, non-Active Timer duration.
9, the method for the raising group calling system reliability described in claim 7 is characterized in that, described Relay MSC detects and the method for record Anchor MSC status is specially:
Relay MSC regularly sends verification message to Anchor MSC, and Relay MSC receives the response message of Anchor MSC in setting-up time, and it is normal then to detect the Anchor MSC status; If do not receive the response message of Anchor MSC in setting-up time, then detecting the Anchor MSC status is fault;
After Relay MSC detected Anchor MSC and breaks down, the state that the Anchor MSC among its GCR is set was a fault;
After Relay MSC detected Anchor MSC fault recovery, the state that the Anchor MSC among its GCR is set was for normal.
10, the method for the raising group calling system reliability described in claim 7, it is characterized in that, described method further comprises: after the Anchor MSC fault recovery, if the calling in the Relay MSC is also underway, then this Relay MSC sends setup requests to Anchor MSC;
After Anchor MSC receives the setup requests of Relay MSC, set up sub-district, dispatcher and Relay MSC in the group call region under this MSC; Calling out ongoing Relay MSC joins in the group calling of Anchor MSC foundation.
11, a kind of Group Call Register is characterized in that, described Group Call Register comprises the group calling data memory module, and Anchor MSC status memory module and Anchor MSC status upgrade trigger module;
Described group calling data memory module is preserved the data by Anchor MSC management;
Described Anchor MSC status memory module is according to detected Anchor MSC status, and the state of storage Anchor MSC is a fault or normal;
Described Anchor MSC status upgrades the state of trigger module according to current Anchor MSC, triggers the Anchor MSC status information of storing in the Anchor MSC status memory module of upgrading.
12, the Group Call Register described in claim 11, it is characterized in that, described group calling data memory module is preserved the data by Anchor MSC management, comprises the permissions list of group calling attribute data, non-Active Timer duration, cell list, group calling dispatcher tabulation, dispatcher's terminating group.
13, a kind of Relay MSC is characterized in that, described Relay MSC comprises Anchor MSC status detection module, Group Call Register and group calling initiation/maintenance module;
Described Anchor MSC status detection module detects the Anchor MSC status, and with Anchor MSC status notice Group Call Register;
When if group calling is initiated, when Anchor MSC status detection module detects the Anchor MSC status and is fault, group calling initiation/maintenance module is according to the group calling attribute data and the cell list of Group Call Register, is established to the calling control connection of BSC and to the resource control connection of sub-district;
If group calling is carried out in the process, it is fault that Anchor MSC status detection module detects the Anchor MSC status, then described group calling initiation/maintenance module keeps group-calling service, discharges Relay MSC and is connected with speech channel with MAP between the AnchorMSC and is connected, and sets up the connection of Relay MSC to the dispatcher.
14, the Relay MSC described in claim 13, it is characterized in that, described Anchor MSC status detection module regularly sends verification message to Anchor MSC, receives the response message of AnchorMSC in setting-up time, and expression Anchor MSC status is normal; If in setting-up time, do not receive the response message of Anchor MSC, expression Anchor MSC fault;
After Anchor MSC status detection module detected Anchor MSC and breaks down, the state of notice Group Call Register Anchor MSC was a fault;
After Anchor MSC status detection module detected Anchor MSC fault recovery, the state of notice Group Call Register Anchor MSC was normal.
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