CN102300166A - Group call establishment method and device - Google Patents
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Abstract
The invention discloses a group call establishment method and a group call establishment device. The method comprises the following steps of: determining group members of a group call, wherein all the group members are set to be dispatchers; and initiating a group call to the other group members according to a preset format by the group member serving as a caller, wherein the group member serving as the caller can make calls in a way of crossing different member group regions. By the method and the device, the problems that the group call cannot be initiated at a non-group call position by a service subscriber, that the calls are easy to drop in calling processes and that information is difficult to leak in related technologies can be solved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of group-calling set-up method and device.
Background technology
Group calling (VGCS) is a kind of group service of 3GPP normal structure definition, and the participating user of a group calling (being called the group membership, Group Member) number does not wait, and can reach tens of even up to a hundred (not having the upper limit in theory) for a long time.All group memberships are divided into two big classes: ' service-user ' that number does not wait (Service subscriber) and maximum 5 (perhaps 15) ' dispatchers ' are (Dispatcher).But in existing standard, service-user can only participate in group calling in ' group calling district ', and the group calling district is made up of at least one or several sub-districts.The position that the dispatcher initiates group calling then is not subjected to any restriction.
According to the 3GPP43.068 agreement, group calling is based on the calling of position, and the group calling district is the essential option of group calling.The successful criterion that this can be set up by group calling: " if service-user is initiated group calling, exhale the group calling DSCH Downlink Shared Channel of sub-district to set up successfully, think that then group calling sets up successfully when rising; If the dispatcher initiates group calling, the DSCH Downlink Shared Channel of any one sub-district in the group calling district is set up successfully, thinks that then group calling sets up successfully " infer and.
Wherein, the dispatcher establishes the group calling of group calling district group calling and sets up principle process as shown in Figure 1, its flow process relates to MS (Mobile Subscriber, the mobile subscriber), MSC (Message Switching Center, message switching center) and BSC (Base Station Controller, base station controller) three main bodys comprise:
Step S102, MS initiate group calling with dispatcher's status and set up message to MSC;
Step S104, MSC initiate the descending shared link in group calling district and set up message to BSC;
The descending shared link of step S106, arbitrary sub-district is set up successfully, and the BSC return link is set up success message;
Step S108, group calling are set up successfully, and MSC receives the group calling promoter;
The descending shared link of other sub-districts of MSC of step S110, BSC announcement is set up successfully.
The call signalling flow that the dispatcher establishes the group calling of group calling district is applied to comprise between MS, MSC, three main bodys of BSC specifically as shown in Figure 2 equally:
Step S202, MS send the request of connecting;
During step S204, MSC feedback is called out and is carried out;
Step S206, MSC send to BSC VGCS and set up message;
Step S208, BSC feedback VGCS sets up response;
Step S210, MSC send VGCS and assign (sub-district 1) to BSC;
Step S212, MSC send VGCS and assign (sub-district 2) to BSC;
Step S214, MSC send VGCS and assign (sub-district 3) to BSC;
Step S216, BSC return VGCS and assign response (sub-district 2);
Step S218, MSC initiate ring to MS;
Step S220, MSC and MSC connect;
Step S222, MS send CONNect Acknowledgement message to MSC;
Step S224, BSC return VGCS and assign response (sub-district 3);
Step S226, BSC return VGCS and assign response (sub-district 1).
For GSM-R (Global System for Mobile communication For Railways, railway global system for mobile communications) system, group calling at present be unable to do without the group calling district, and this class group calling has following defective:
1. initiate group calling as service-user, professional providing is subject to geographical position (promptly can only could initiate group calling in the group calling district);
2. when the train high-speed cruising, much regardless of the group calling district, always the possibility of rolling the group calling district away from is arranged, thus service-user (speaker/hearer) call drop caused;
3. in fact do not need ' service-user ' when the role participates in when this group calling, distribute the processing of DSCH Downlink Shared Channel during group calling, cause the waste of downlink wireless channel resource and A mouth circuit resource.
Above-mentioned defective can be brought following consequence:
1. service-user can not be initiated group calling in non-group calling zone position;
2. for preventing call drop, can only enlarge the group calling district, comprise more sub-district, directly cause the waste of radio channel resource and A mouth circuit resource so again.These two problems oppose fully, can only alleviate one of them to a certain extent, but increase the weight of another simultaneously;
3. the downlink broadcast channel of group calling is easy to be eavesdropped by GSM-R user/be not intended to hear, causes the leakage of information of non-expectation.
Can not initiate easy call drop and the easy problem of leaking of information in group calling, the calling procedure in non-group calling position at service-user in the correlation technique, not propose effective solution at present as yet.
Summary of the invention
Main purpose of the present invention is to provide a kind of group-calling set-up method and device, can not initiate easy call drop and the easy problem of leaking of information in group calling, the calling procedure in non-group calling position to solve the service-user of mentioning in the above-mentioned correlation technique at least.
According to an aspect of the present invention, provide a kind of group-calling set-up method, having comprised: determine the group membership of this group calling, wherein, all group memberships' type all is set to the dispatcher; Group membership by caller initiates group calling by predetermined format to other group memberships, and wherein, the group membership of described caller can stride different group calling districts and call out.
Preferably, described group membership's type is the number of the dispatcher in the group calling that the dispatcher's number in dispatcher's the group calling is service-user and dispatcher greater than described group membership's type.
Preferably, to be the maximum of the dispatcher's number in dispatcher's the group calling be 32 to described forming member's type.
Preferably, described predetermined format is: group-calling service sign+N position custom coding+group id ID.
Preferably, described group-calling service is designated 50; N is 5; Described custom coding is the area sign.
Preferably, the group membership of described caller presses predetermined format and initiates also to comprise after the group calling: when the group membership of any one non-caller replys described caller, determine that described group calling sets up successfully.
Preferably, the mass communication between the described method crewmember that is applied to disperse.
Preferably, described method is applied in the railway global system for mobile communications GSM-R system.
According to another aspect of the present invention, also provide a kind of group calling apparatus for establishing, having comprised: determination module, be used for determining the group membership of this group calling, wherein, all group memberships' type all is set to the dispatcher; Initiation module is used for initiating group calling by predetermined format to other group memberships by the group membership of caller, and wherein, the group membership of described caller can stride different group calling districts and call out.
Preferably, said apparatus also comprises: set up module, when the group membership who is used for any one non-caller replys described caller, determine that described group calling sets up successfully.
In embodiments of the present invention, all members' type all is set to the dispatcher, and the group membership of caller can call out at arbitrary region, is not subjected to the restriction in group calling district; And, because the dispatcher is not subjected to the restriction in group calling district yet in communication process, can avoid causing call drop because of crossing over the group calling district, improve speech quality; In addition, the group membership of group calling sets up calling with dispatcher's status and other group memberships, does not need to set up the downlink broadcast passage, makes that this calling is not easy to be eavesdropped or be not intended to leak by other users, improves the fail safe of call information.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is that principle flow chart is set up in the group calling that the dispatcher according to correlation technique establishes the group calling of group calling district;
Fig. 2 is the call signalling flow figure that establishes the group calling of group calling district according to the dispatcher of correlation technique;
Fig. 3 is the process chart according to the group-calling set-up method of the embodiment of the invention;
Fig. 4 is that principle flow chart is set up in the group calling that the dispatcher according to the embodiment of the invention sets up no group calling district's group calling;
Fig. 5 is the call signalling flow figure that sets up no group calling district's group calling according to the dispatcher of the embodiment of the invention;
Fig. 6 is first kind of structural representation according to the group calling apparatus for establishing of the embodiment of the invention;
Fig. 7 is second kind of structural representation according to the group calling apparatus for establishing of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Mention in the correlation technique, for GSM-R (Global System for Mobile communication For Railways, railway global system for mobile communications) system, group calling at present be unable to do without the group calling district, and this class group calling has following defective:
1. initiate group calling as service-user, professional providing is subject to geographical position (promptly can only could initiate group calling in the group calling district);
2. when the train high-speed cruising, much regardless of the group calling district, always the possibility of rolling the group calling district away from is arranged, thus service-user (speaker/hearer) call drop caused;
3. in fact do not need ' service-user ' when the role participates in when this group calling, distribute the processing of DSCH Downlink Shared Channel during group calling, cause the waste of downlink wireless channel resource and A mouth circuit resource.
Above-mentioned defective can bring following consequence to be:
1. service-user can not be initiated group calling in non-group calling zone position;
2. for preventing call drop, can only enlarge the group calling district, comprise more sub-district, directly cause the waste of radio channel resource and A mouth circuit resource so again.These two problems oppose fully, can only alleviate one of them to a certain extent, but increase the weight of another simultaneously;
3. the downlink broadcast channel of group calling is easy to be eavesdropped by GSM-R user/be not intended to hear, causes the leakage of information of non-expectation.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of group-calling set-up method, and its handling process comprises as shown in Figure 3:
Step S302, determine the group membership of this group calling, wherein, all group memberships' type all is set to the dispatcher;
Step S304, initiate group calling by predetermined format to other group memberships by the group membership of caller, wherein, the group membership of caller can stride different group calling districts and call out.
In embodiments of the present invention, all members' type all is set to the dispatcher, and the group membership of caller can call out at arbitrary region, is not subjected to the restriction in group calling district; And, because the dispatcher is not subjected to the restriction in group calling district yet in communication process, can avoid causing because of crossing over the group calling district, improve speech quality; In addition, the group membership of group calling sets up calling with dispatcher's status and other group memberships, does not need to set up the downlink broadcast passage, makes that this calling is not easy to be eavesdropped or be not intended to leak by other users, improves the fail safe of call information.
In embodiments of the present invention, step S304 is when implementing, and the group membership of caller can cross over different group calling districts and initiate group calling, calls out, can cross over different group calling districts too with its corresponding called subscriber and receive group calling, all group memberships all are not subjected to the restriction of geographic area.
Need to prove, the embodiment of the invention is usually directed to the GSM-R system, the group-calling set-up method that does not need the group calling district during group calling that the embodiment of the invention provides, belong to GSM-R private network field of mobile communication, the group-calling service that relates to the GSM-R system, be a kind of in the GSM-R system the special group-calling set-up method of a class.
From point of theory, the group-calling set-up method that the embodiment of the invention provides has defined the group calling of a class and location independent, and its group membership has only the dispatcher, does not have service-user, therefore, has the feature of following 1-5 record.
1. the group membership of group calling has only the dispatcher, does not have service-user.
2. group calling does not have the restriction in group calling district, and this does not just cause calling out and need even trans-regional group membership also can converse smoothly, can not be easy to call drop in certain group calling district, has improved speech quality, and then promotes user experience.
3. owing to there is not service-user, the former resource of distributing to service-user just can be distributed to the dispatcher, dispatcher's number can correspondingly enlarge like this, and promptly group membership's type is the number of the dispatcher in the group calling that the dispatcher's number in dispatcher's the group calling is service-user and dispatcher greater than group membership's type.During enforcement, dispatcher's number can be expanded as 32 at most in a group calling; Certainly, this is the number under existing standard or agreement, if follow-up standard or agreement are carried out respective extension, then dispatcher's number also may correspondingly increase, and for example becomes 64 even 128, or the like.
4. the dispatcher initiates group calling, and its predetermined format is: group-calling service sign+N position custom coding+group id ID.The concrete value of each sign or coding is decided according to actual conditions, and for example, the group-calling service sign can be chosen as 50; N can be chosen as any natural number; Custom coding is set to the area sign, or the like.
In a preferred embodiment, institute's form of dialling the number can be " 50+5 position custom coding+group ID ".Such as: definition ' group ID ' 881 is all train train security chiefs, defines ' 5 custom codings ' is the running number of this train.
5. the special group calling of this class (MSC discerns by self-defining GroupID) that provides for the embodiment of the invention, it sets up the successful corresponding change of standard meeting, in this example, revising the criterion that group calling successfully sets up is set to: " if any one dispatcher replys, then group calling is successfully set up ".Because all members all are set to the dispatcher in this example, therefore, in other words, as long as also can think have the group membership of any one non-caller to reply, then group calling is set up successfully.
This type of group calling that the embodiment of the invention provides be fit to disperse the mass communication between the crewmember of (location independent) very much.
Wherein, the dispatcher that the embodiment of the invention provides sets up the group calling of no group calling district's group calling and sets up principle process as shown in Figure 4, and its flow process relates to MS, MSC and three main bodys of MS/FAS, comprising:
Step S402, MS initiate group calling with dispatcher's status and set up message to MSC;
Step S404, MSC send group calling and set up message to other dispatchers;
Step S406, arbitrary dispatcher reply, and then MS/FAS notifies MSC;
Step S408, group calling are set up successfully, and MSC receives the promoter;
Step S410, other dispatchers reply, and MS/FAS informs that MSC connects conference circuit.
Accordingly, the call signalling flow that the dispatcher sets up no group calling district's group calling sees also Fig. 5, for simply seeing, supposes that it is the local exchange mobile subscriber that group calling works the person of exhaling A, and other also comprise two dispatchers, and one is PBX user B, by basic rate interface PRA; One is his mobile subscriber C of office, by ISDN(Integrated Service Digital Network) User Part interface ISUP, comprising:
' 50+5 position custom coding+group ID ' is initiated group calling, and MSC is arrived in transmission ' foundation ' (SETUP) message in step S502, portable terminal A (needn't require to possess GSM-R group calling function) dialing.
Step S504, MSC return ' call progress ' (CALLPROCEEDING).
Step S506-S508, MSC carry out number analysis, analyze according to ' 50 ' to be group-calling service.MSC resolves ground domain identifier AreaID and group id GroupID, according to GroupID is 881 to be judged to be the group-calling service (specific implementation in no group calling district, which GroupID is judged to be the group-calling service in no group calling district, can realize by increasing configuration), according to virtual ' AreaID ' and GroupID, obtain the configuration of this group, particularly dispatcher's configuration.MSC has checked that whether the person of exhaling is the dispatcher in the group, and whether has possessed call right.After inspection is passed through,, be established to every other dispatcher's audio call (this example is a PBX dispatcher B, and is the mobile dispatcher C of his office) simultaneously according to dispatcher's tabulation of obtaining.
Step S510-S512, PBX landline telephone B return ' call progress ' (CALL PROC) message.During ring, PBX returns ' ring ' (ALERTING) message.
Step S514, MSC return ring to calling subscriber A ' (ALERTING) message.
Step S516, mobile phone C ring, GMSC returns ' Address Complete Message ' (ACM) message.
Step S518, PBX landline telephone are replied, and PBX returns ' connection ' (CONNECT) message.
Step S520/522, MSC return ' CONNect Acknowledgement ' CONNECT ACK signaling to PBX; Send (CONNECT) message of layer three ' connection ' to the calling subscriber.
' CONNect Acknowledgement ' that step S524, calling subscriber return layer three to MSC be message (CONNECTACK), and MSC connects the double-directional speech passage of A and B.
Step S526, mobile phone C reply, and GMSC returns ' response message ' (ANM) message; MSC connects the A/B/C conference circuit.
The group-calling set-up method that provides in the embodiment of the invention, effect during its calling talk is equal to " Multi-Party Conference " (Multi-Party) supplementary service, but, call establishment with discharge much simple (do not need as " Multi-Party Conference ", need " host " (being the group membership of caller) to set up singly, do not need to discharge singly) yet, because each group membership's type is the dispatcher, when it was endowed the authority that discharges group calling, any one group membership all can terminating group; The host also can discharge whole group calling by an operation of common call release button.Therefore, the foundation/rate of release of group calling is also faster, possesses very strong practicality.
In addition, ' Multi-Party Conference ' is professional because be subjected to protocols limit, at most can only 6 square tubes words.But the group calling mode in no group calling district can expand to the participation number of a group calling maximum 32 users (even more).
Further, the group calling method that provides of the embodiment of the invention not only is confined to the GSM-R field.Other trunked call scenes, for example PLMN (Public Land Mobile Network, public land mobile network) net also can use.
Based on same inventive concept, the embodiment of the invention also provides a kind of group calling apparatus for establishing, and its structural representation comprises as shown in Figure 6:
In one embodiment, preferred, as shown in Figure 7, the group calling apparatus for establishing can also comprise:
Set up module 701, link to each other, when the group membership who is used for any one non-caller replys caller, determine that group calling sets up successfully with initiation module 602.
As can be seen from the above description, the present invention has realized following technique effect:
In embodiments of the present invention, all members' type all is set to the dispatcher, and the group membership of caller can call out at arbitrary region, is not subjected to the restriction in group calling district; And, because the dispatcher is not subjected to the restriction in group calling district yet in communication process, can avoid causing call drop because of crossing over the group calling district, improve speech quality; In addition, the group membership of group calling sets up calling with dispatcher's status and other group memberships, does not need to set up the downlink broadcast passage, makes that this calling is not easy to be eavesdropped or be not intended to leak by other users, improves the fail safe of call information.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a group-calling set-up method is characterized in that, comprising:
Determine the group membership of this group calling, wherein, all group memberships' type all is set to the dispatcher;
Group membership by caller initiates group calling by predetermined format to other group memberships, and wherein, the group membership of described caller can stride different group calling districts and call out.
2. method according to claim 1 is characterized in that, described group membership's type is the number of the dispatcher in the group calling that dispatcher's number in dispatcher's the group calling is service-user and dispatcher greater than described group membership's type.
3. method according to claim 2 is characterized in that, the maximum that described forming member's type is the dispatcher's number in dispatcher's the group calling is 32.
4. method according to claim 1 is characterized in that, described predetermined format is: group-calling service sign+N position custom coding+group id ID.
5. method according to claim 4 is characterized in that described group-calling service is designated 50; N is 5; Described custom coding is the area sign.
6. according to each described method of claim 1 to 5, it is characterized in that the group membership of described caller presses predetermined format and initiates also to comprise after the group calling: when the group membership of any one non-caller replys described caller, determine that described group calling sets up successfully.
7. according to each described method of claim 1 to 5, it is characterized in that the mass communication between the crewmember that described method is applied to disperse.
8. according to each described method of claim 1 to 5, it is characterized in that described method is applied in the railway global system for mobile communications GSM-R system.
9. a group calling apparatus for establishing is characterized in that, comprising:
Determination module is used for determining the group membership of this group calling, and wherein, all group memberships' type all is set to the dispatcher;
Initiation module is used for initiating group calling by predetermined format to other group memberships by the group membership of caller, and wherein, the group membership of described caller can stride different group calling districts and call out.
10. device according to claim 9 is characterized in that, also comprises:
Set up module, when the group membership who is used for any one non-caller replys described caller, determine that described group calling sets up successfully.
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