CN100466772C - Method for re-selecting group-calling domain by mobile terminal - Google Patents
Method for re-selecting group-calling domain by mobile terminal Download PDFInfo
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- CN100466772C CN100466772C CNB2006100334192A CN200610076565A CN100466772C CN 100466772 C CN100466772 C CN 100466772C CN B2006100334192 A CNB2006100334192 A CN B2006100334192A CN 200610076565 A CN200610076565 A CN 200610076565A CN 100466772 C CN100466772 C CN 100466772C
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Abstract
The method comprises: a) setting a neighboring cell list (NCL) at network side, which is used for storing the backup relations between neighboring cells; a) when the current cell is in process of group call service, if the channel establishment failures, the network side looks up the preset NCL to find the information about one or more than one neighboring cell already subscribing the group call service or already establishing the group call channel; b) at current cell, the network side sends the group call reference of said group call service and the information about one or more than one neighboring cell; according to the information about the neighboring cells, the terminal at current cell makes cell reselection.
Description
Technical field
The present invention relates to the trunking communicating technology field, particularly a kind of method of re-selecting group-calling domain by mobile terminal.
Background technology
Trunking communication (Trunk Communication) claims cluster wireless communication (Trunked Radio) again, be that professional user with the various classification sparse capacity of some puts together, utilize the wireless channel of same bus, carry out the multipurpose based on command scheduling, high-effect private radio communication.For the private radio communication that talkback system disperses to move like this, the level of resources utilization is not high, trunking communication has the advantages that dynamic channel allocation, channel shared by multiple users resource etc. make full use of limited radio channel resource, makes the member who participates in trunking communication can share abundant specific function and business.
Voice group call service (Voice Group Call Service, VGCS) and Voice Broadcast Service (VoiceBroadcast Service VBS) belongs to cluster communication service.The member who comprises two kinds of identity in the VGCS business, i.e. dispatcher and service-user.The dispatcher can be that the fixed network user also can be the mobile subscriber, by being the Speech Communication of the dedicated channel participation group calling of its foundation, existing GSM800M digital cluster system (GSM Trunk 800M, GT800) in the standard, the VGCS business can not have dispatcher or maximum five dispatchers; Service-user has referred to subscribe the mobile subscriber of VGCS business, and quantity is not limit, and participates in the Speech Communication of group calling by the group-calling channel in the group call region.VBS has the business function similar with VGCS, and main difference is in the VBS business, have only the promoter of broadcasting that the right of speech is arranged, and promoter's identity can only be the dispatcher; Other members, the dispatcher who comprises domestic consumer and non-promoter does not have the right of speech.Particularly point out as nothing, the group calling of this specification the following stated is an example with the VGCS business all, and the correlation circumstance of VBS can be according to the simple analogy of the explanation of VGCS business is drawn.
(Group ID G-ID) determines with group call region is unique a specific group calling communication by the group calling sign.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 region is meant the scope that group calling communication covers, and is base unit with the wireless area, can be made up of one or more sub-districts, and the sub-district of forming group call region is called group call cell.The Common Control Channel of each sub-district (CommonControl Channel, CCCH) by access grant channel (Access Granted Channel, AGCH), notification channel (Notification Channel, NCH), paging channel (Paging Channel, PCH) form, be respectively applied for and send assignment message, notification message and beep-page message.When carrying out group-calling service, each group call cell is at first set up the group-calling channel corresponding to this group-calling service, the NCH cocycle sends the notification message that the channel comprise the group-calling channel that current area existed is described then, after the mobile subscriber receives to one's name the notification message of group, can forward channel to and describe on the pairing group-calling channel and listen to dialog context.
Set up in the process of group-calling channel at each group call cell, the situation that the group-calling channel failure is set up in the part sub-district may occur.For example, the channel quantity of sub-district is limited, in some burst in emergency circumstances, in some sub-districts, the quantity of the required group calling passage of group calling that exists may be greater than the maximum quantity that can hold channel in the sub-district, in this case, network side preferentially guarantees to distribute user's group-calling channel of high priority; For the group calling of low priority, then can't set up group-calling channel.And meanwhile, may set up the group-calling channel of this group-calling service at neighbor cell, but the prior art scheme can't notify portable terminal to forward the group-calling channel of adjacent area to.Will cause the user of this sub-district to reside in current area so always, but can't carry out group-calling service.
Summary of the invention
In view of this, the objective of the invention is to, propose a kind of method of re-selecting group-calling domain by mobile terminal, make portable terminal when current area is set up the group-calling channel failure, still can realize group-calling service.Dispose the neighbor cell list NCL that the group calling that is used for group-calling service identifies and the neighbor cell of the described group-calling service of having contracted identifies at network side, this method also comprises the steps:
A, current area are in carrying out the group-calling service process, if set up group-calling channel failure, then network side is searched the NCL of configured in advance, find signatory described group-calling service and have set up one or more adjacent cell information of group-calling channel;
B, network side send one or more adjacent cell information that found in current area;
C, the portable terminal that is in current area receive described one or more adjacent cell information, and carry out the sub-district gravity treatment according to described adjacent cell information.
Described neighbor cell sign comprises the frequency and the BCC BSIC of neighbor cell;
The described portable terminal of step C carries out the sub-district gravity treatment: portable terminal is adjusted to frequency and the described Target cell working frequency range of BSIC with the receiver frequency, realizes the sub-district gravity treatment.
Step B further comprises: network side sends the group call reference of described group-calling service;
Then step C is: portable terminal is according to the group call reference of being received, this group-calling service that judges whether to have contracted is if then carry out the sub-district gravity treatment according to the adjacent cell information of being received.
Described network side sends described group-calling service in current area group call reference with one or more adjacent cell information that found is:
The base station is on the notification channel of current area, and circulation sends the expansion notification message of group call reference that comprises described group-calling service and one or more adjacent cell information that found.
Group calling further comprises when finishing: base station controller sends expiry notification message to sending the base station, after expiry notification message is received in the base station, stops at current area and sends described expansion notification message.
This method further comprises: network side sends the system message that comprises the adjacent cell information except that the sub-district of allocated channel failure, the portable terminal that is in group-calling channel receives described system message, and carries out the sub-district gravity treatment according to the adjacent cell information in the described system message.
Described portable terminal carries out the sub-district gravity treatment:
Portable terminal is got common factor with adjacent cell information and self the detected adjacent cell information received, and the neighbor cell in selecting to occur simultaneously carries out the sub-district gravity treatment as Target cell.
Described NCL is arranged in the base station controller BSC, and then described network side is BSC.
Perhaps, described NCL is arranged in the moving exchanging center MSC, and then the described network side of steps A one or more adjacent cell information of finding signatory described group-calling service and having set up group-calling channel comprise:
A1, MSC receive the Assignment Failure message that comprises group calling sign and current area sign from BSC, MSC is according to group calling sign in the receiving Assignment Failure message and current area sign, search the NCL of local configuration, find the adjacent cell information of signatory identical group-calling service, and the adjacent cell information that is found is sent to BSC;
A2, BSC are from the adjacent cell information from MSC, and the information of the neighbor cell of corresponding group calling passage has been set up in selection;
The described network side of step B is BSC.
Described group-calling service is voice group call service VGCS or Voice Broadcast Service VBS.
As can be seen from the above technical solutions, when current area was set up the group-calling channel failure, network side sent in current area and belongs to this group-calling service, has set up the adjacent cell information of group-calling channel; Then be in the professional member of this group-calling service of current area, can carry out the sub-district gravity treatment, forward on the group-calling channel of neighbor cell and carry out group-calling service according to the adjacent cell information of being received.By the present invention program, can make the professional member who is in the sub-district of setting up group-calling channel failure still can the access group calling business; Like this, when the part group call cell can not distribute group-calling channel, still guarantee the group-calling service operate as normal, improve the ability of group-calling service system reply burst emergency.
Description of drawings
Fig. 1 realizes the re-selecting group-calling domain by mobile terminal flow chart for the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is further elaborated below in conjunction with accompanying drawing.
Core content of the present invention is: when current group call cell can't be set up group-calling channel corresponding to certain group-calling service, set up the adjacent cell information of the group-calling channel of this group-calling service at this Cell Broadcast CB; Be in current group call cell and belong to the professional member's of this group-calling service portable terminal,, carry out the group-calling channel that the sub-district gravity treatment forwards neighbor cell to and carry out group-calling service according to the adjacent cell information of being received.
Be to realize the foregoing invention scheme, (Base Station Controller, BSC) (Neighbor Cell List NCL), is used for determining the backup relation between the neighbor cell of signatory identical group-calling service to the configuration neighbor cell list at base station controller.For example, BSC management a, b, c, d, an e5 sub-district, the signatory group-calling service A of sub-district a, sub-district b, sub-district c wherein, c, the d group-calling service B that contracts, then the NCL of BSC comprises two records, article one, the group calling of the group-calling service A that comprises the cell ID of sub-district a, sub-district b and sub-district c and contracted sign, another comprises the cell ID of sub-district c and sub-district d and the group calling of the group-calling service B that contract identifies.Like this, (Base Transceiver Station BTS) according to cell ID and group-calling service sign, just can find the sign of other neighbor cells of the identical group-calling service of having contracted by searching NCL in the base station.In addition, (Notification Command Extend NCE), carries among the described NCE with this sub-district and has neighbouring relations and the adjacent group calling cell information of the identical group-calling service of having contracted group call cell NCH to be gone up broadcasting expansion notification message.
The Signalling exchange flow chart of embodiment of the invention realization re-selecting group-calling domain by mobile terminal comprises the steps: as shown in Figure 1
Step 101: group calling is after network side success authentication, and MSC all sub-districts in group call region send VGCS assignment request (Assignment Command) message that comprises the group calling sign; After BSC receives the VGCS assignment request message, set up group-calling channel at each group call cell, if set up successfully, then return that (Assignment Complete) message is finished in the VGCS assignment that comprises the sign of successfully setting up the group-calling channel sub-district and according to existing group calling flow performing subsequent step to MSC; If set up failure, then execution in step 102;
Step 102:BSC returns sign VGCS Assignment Failure (the VGCS Assignment Failure) message that comprises the group call cell of setting up the group-calling channel failure to MSC; For convenience of description, the group call cell that below will set up group-calling channel failure abbreviates current area as;
Step 103:BSC searches local NCL according to the group calling sign in current area sign and the assignment request, find signatory this group-calling service, and set up the adjacent group call cell of group-calling channel, the NCE that will comprise the information of group call reference, the adjacent group call cell that finds is sent to BTS; Wherein the information of adjacent group call cell comprises the frequency and the BCC (BSIC) of this adjacent group call cell, frequency is the operating frequency that group call cell uses, BSIC is used to distinguish the identical adjacent group call cell of operating frequency, frequency+BSIC can uniquely determine to be aforesaid cell ID by adjacent group call cell;
Step 104:BTS sends the NCE that is received in the NCH of current area cocycle;
Step 105: after the portable terminal that is in current area is received NCE, according to this group-calling service that judges whether to have contracted of the group call reference among the NCE, if, neighbor cell and self detected neighbor cell of the adjacent group calling cell information representative that NCE is carried are got common factor, with the Target cell of the group call cell in occuring simultaneously as gravity treatment, and the receiver frequency adjusted to the described Target cell working frequency range of frequency+BSIC, realize the sub-district gravity treatment; Otherwise this portable terminal and this flow process are irrelevant, do not carry out any operation;
Step 106: when group calling finished, MSC each sub-district in group call region sends removed message, after BSC receives this message, sends the expiry notification message that comprises the group calling sign to BTS;
After step 107:BTS received expiry notification message, the notification channel NCH that stops at each group call cell of group call region went up and sends notification message or the expansion notification message with identical group calling sign.
When group-calling service carried out, BSC sent in each sub-district and is used to describe the system message that can carry out the adjacent cell information of gravity treatment for the portable terminal of current area, and in existing standard, described system message is a system message 10.When generation system message 10, the information of setting up the sub-district of group-calling channel failure is not included in the information of system message 10 described adjacent group call cells, so just can avoid portable terminal ping-pong reselection between former persistent district and backup cell, improve system availability.
Above-mentioned NCL is also configurable in MSC, and then in the step 103, the process that sends NCE to BTS is:
MSC searches local NCL according to group calling sign and cell ID in the VGCS Assignment Failure message of being received, finds the neighbor cell of signatory this group-calling service, and the information that will comprise group call reference, the neighbor cell that finds is sent to BSC; BSC picks out the cell information of the group-calling channel of successfully setting up this group calling in the adjacent cell information of being received, and will comprise that the NCE of the group call reference of the cell information picked out and this group calling is sent to BTS.
In the embodiment of the invention step 101, the described group-calling channel of setting up is failed, and its reason may be aforementioned because simultaneous group-calling service is too much, causes the channel number of sub-district not satisfy the demand; Also may be that other reasons causes no channel confession distribution in the sub-district, perhaps other reasons causes and sets up the group-calling channel failure, and the present invention does not make qualification to the reason of setting up the group-calling channel failure.So the present invention is the portable terminal that is in the sub-district of setting up the group-calling channel failure, provide a kind of implementation of access group calling business; When the part group call cell can not distribute group-calling channel, still guarantee the group-calling service operate as normal, improve the ability of group-calling service system reply burst emergency.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of method of re-selecting group-calling domain by mobile terminal is characterized in that, network side configuration is used to preserve the neighbor cell list NCL of the neighbor cell sign of the group calling sign of group-calling service and the described group-calling service of having contracted, and this method comprises the steps:
A, current area are in carrying out the group-calling service process, if set up group-calling channel failure, then network side is searched described NCL, find signatory described group-calling service and have set up one or more adjacent cell information of group-calling channel;
B, network side send described one or more adjacent cell information in current area;
C, the portable terminal that is in current area receive described one or more adjacent cell information, and carry out the sub-district gravity treatment according to described adjacent cell information.
2, method according to claim 1 is characterized in that, described neighbor cell sign comprises the frequency and the BCC BSIC of neighbor cell;
The described portable terminal of step C carries out the sub-district gravity treatment: portable terminal is adjusted to frequency and the described Target cell working frequency range of BSIC with the receiver frequency, realizes the sub-district gravity treatment.
3, method according to claim 1 is characterized in that, step B further comprises: network side sends the group call reference of described group-calling service;
Then step C is: portable terminal is according to the group call reference of being received, this group-calling service that judges whether to have contracted is if then carry out the sub-district gravity treatment according to the adjacent cell information of being received.
4, method according to claim 3 is characterized in that, described network side sends described group-calling service in current area group call reference with one or more adjacent cell information that found is:
The base station is on the notification channel of current area, and circulation sends the expansion notification message of group call reference that comprises described group-calling service and one or more adjacent cell information that found.
5, method according to claim 4 is characterized in that, group calling further comprises when finishing: base station controller sends expiry notification message to sending the base station, after expiry notification message is received in the base station, stops at current area and sends described expansion notification message.
6, method according to claim 1, it is characterized in that, this method further comprises: network side sends the system message that comprises the adjacent cell information except that the sub-district of allocated channel failure, the portable terminal that is in group-calling channel receives described system message, and carries out the sub-district gravity treatment according to the adjacent cell information in the described system message.
According to the described method of claim 1 to 6, it is characterized in that 7, described portable terminal carries out the sub-district gravity treatment and is:
Portable terminal is got common factor with adjacent cell information and self the detected adjacent cell information received, and the neighbor cell in selecting to occur simultaneously carries out the sub-district gravity treatment as Target cell.
8, according to each described method of claim 1 to 6, it is characterized in that described NCL is arranged in the base station controller BSC, then described network side is BSC.
9, according to each described method of claim 1 to 6, it is characterized in that, described NCL is arranged in the moving exchanging center MSC, and then the described network side of steps A one or more adjacent cell information of finding signatory described group-calling service and having set up group-calling channel comprise:
A1, MSC receive the Assignment Failure message that comprises group calling sign and current area sign from BSC, MSC is according to group calling sign in the receiving Assignment Failure message and current area sign, search the NCL of local configuration, find the adjacent cell information of signatory identical group-calling service, and the adjacent cell information that is found is sent to BSC;
A2, BSC are from the adjacent cell information from MSC, and the information of the neighbor cell of corresponding group calling passage has been set up in selection;
The described network side of step B is BSC.
According to the described method of claim 1 to 6, it is characterized in that 10, described group-calling service is voice group call service VGCS or Voice Broadcast Service VBS.
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| CNB2006100334192A CN100466772C (en) | 2006-04-30 | 2006-04-30 | Method for re-selecting group-calling domain by mobile terminal |
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| CNB2006100334192A CN100466772C (en) | 2006-04-30 | 2006-04-30 | Method for re-selecting group-calling domain by mobile terminal |
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| CN100466772C true CN100466772C (en) | 2009-03-04 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101400096B (en) * | 2007-09-28 | 2010-06-16 | 华为技术有限公司 | Call control method, base station subsystem and user terminal |
| CN101577949A (en) * | 2008-05-08 | 2009-11-11 | 华为技术有限公司 | Method and device for acquiring information for cell reselection |
| CN101594651B (en) * | 2008-05-29 | 2014-04-02 | 华为技术有限公司 | Method, device and system for sending abutting subdistrict list |
| CN102098625B (en) * | 2009-12-10 | 2014-07-02 | 中兴通讯股份有限公司 | Method and device for realizing paging in group calling process |
| CN102123460B (en) * | 2010-01-07 | 2014-11-05 | 普天信息技术研究院有限公司 | Method for realizing group calling service handover in trunked mobile communication system |
| CN102448024A (en) * | 2010-10-14 | 2012-05-09 | 中兴通讯股份有限公司 | Method and system for acquiring information of cell in group call district |
| CN103796167B (en) * | 2012-10-31 | 2017-12-01 | 中兴通讯股份有限公司 | A kind of broadcasting method and device of group system configuration information |
| CN105451277B (en) * | 2014-08-06 | 2019-05-17 | 普天信息技术有限公司 | A kind of group is answered the method that group is exhaled when exhaling called UE cell reselection |
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