CN104956698A

CN104956698A - Trunking communication method, base station, user equipment, and system

Info

Publication number: CN104956698A
Application number: CN201480002671.XA
Authority: CN
Inventors: 曾清海; 黄曲芳; 刘文济; 孙启; 钱晨光
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-01-23
Filing date: 2014-01-23
Publication date: 2015-09-30
Also published as: WO2015109475A1

Abstract

The invention discloses a trunking communication method, base station, user equipment, and system. The base station comprises: a reception unit, used for receiving temporary mobile group identity (TMGI) information that is sent by a target base station and is corresponding to a current multimedia broadcast multicast service (MBMS) of the target base station, and receiving an MBMS interest indication sent by a user equipment, the target base station being located in a target MBMS single-frequency network region, and the MBMS interest indication comprising TMGI information corresponding to the MBMS that the user equipment is interested in; and a processing unit, used for selecting, according to the MBMS interest indication and the TMGI information corresponding to the current MBMS of the target base station, the target base station capable of providing the MBMS that the user equipment is interested in when the user equipment cannot receive the current MBMS of the base station, so as to perform switching. Correspondingly, also provided are a trunking communication method, a user equipment, and a system. By using the present invention, the continuity of the MBMS is ensured when a service scenario is changed, thereby meeting requirements of service continuity.

Description

Trunking communication method, base station, user equipment, and system

A kind of cluster communication method, base station, user equipment and systems technology field

The present invention relates to the communications field, more particularly to a kind of cluster communication method, base station, user equipment and system.Background technology

Cluster communication service refers to utilize the cluster communication common network of the trunked communication system composition with the technical characterstic such as channel sharing and dynamically distributes, the communication service such as special command scheduling provided for group users such as multiple departments, units.In public safety field, cluster communication has extensive purposes.

Multimedia broadcast-multicast service (Multimedia Broadcast Multicast Service, MBMS) is a kind of while to multiple users while providing the technology of identical services content.In the network carrying, MBMS is transmitted by the way of broadcast or multicast, so as to realize network（Including core net and access network) resource-sharing, the service to media users as much as possible, with same requirements is realized with resource as few as possible.MBMS media broadcast multicast single-frequency network（MBMS Single Frequency Network, MBSFN) transmission mode require certain area in all cells in identical time, frequency, use identical modulating-coding pattern, send identical packet.

Currently, people, which study, uses MBMS technology bearing cluster communication services；Due to user equipment (User Equipment, UE) mobility, often occurs the dynamic change of service scenarios, such as from Unicast areas to Unicast areas, MBSFN regions to MBSFN regions.In the change of Unicast areas to Unicast areas, UE-be directly in connected state, normal cell switching can meet the good successional demand of business of the moon.And MBSFN regions need especially to consider how to set up multicast carrying to meet the demand of service continuity to MBSFN regions, easily cause the handover delays of UE between zones big, far beyond demand parameter of the cluster communication for time delay, it is impossible to ensure the continuity of cluster communication service.The content of the invention

Technical problem to be solved of the embodiment of the present invention is there is provided a kind of cluster communication method, base station, user equipment and system, solves prior art in the handoff procedure of region it cannot be guaranteed that the company of cluster communication service The technical problem of continuous property.

First aspect there is provided a kind of base station, including：

Receiving unit, for receiving the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for the target BS that the target BS is sent and receiving the MBMS interest instruction that user equipment is sent, the target BS is located at target MBMS single-frequency network areas, and the MBMS interest indicates to include being used to identify the corresponding TMGI information of user equipment MBMS interested；Processing unit, during current MBMS for the base station can not to be received when the user equipment, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

With reference in a first aspect, in the first possible implementation, the receiving unit is additionally operable to, receiving the measurement report that the user equipment is sent；

The processing unit, specifically for, when judging that the user equipment can not receive the current MBMS of the base station according to the blunt announcements of the measurement ^, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

With reference in a first aspect, in second of possible implementation, the measurement report is indicated including the MBMS interest；

The processing unit, specifically for when judging that the user equipment can not receive the current MBMS of the base station according to the measurement report, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

With reference to second of possible implementation of the first possible implementation of first aspect, or first aspect, in the third possible implementation, the blunt announcements of measurement ^ also include：

Whether the MBMS mass of the user equipment reception base station is less than the metrical information of configured threshold；When the MBMS mass that the user equipment receives the base station is less than configured threshold, then it can determine whether out that the user equipment can not receive the current MBMS of the base station.

With reference to first aspect, in the 4th kind of possible implementation, the processing unit specifically for, the MBMS interest of the user equipment received according to the receiving unit is indicated, when judging that the user equipment can not receive the current MBMS of the base station by switch decision, according to the MBMS Interest indicates TMGI information corresponding with the current MBMS of the target BS, and the target BS that selection can provide user equipment MBMS interested is switched over.

With reference to first aspect, or the first possible implementation of first aspect, or second of possible implementation of first aspect, or the third possible implementation of first aspect, or the 4th kind of possible implementation of first aspect, in the 5th kind of possible implementation, the processing unit is specifically for the transmission handover request of the target BS of selection；The handover request carries the corresponding multicast control channel MCCH information of MBMS for indicating that the user equipment fed back the need for the target BS is interested；Switching command is sent to the user equipment；The switching command carries the corresponding MCCH information of user equipment MBMS interested.

With reference to first aspect, or the first possible implementation of first aspect, or second of possible implementation of first aspect, or the third possible implementation of first aspect, either the 5th kind of possible implementation of the 4th kind of possible implementation or first aspect of first aspect, in the 6th kind of possible implementation, the receiving unit is additionally operable to, and receives MBMS session requests and letter head compression protocol ROHC algorithm parameters that upper strata is sent；

The base station also includes：

Compression unit, for according to the ROHC algorithm parameters, letter head compression protocol ROHC compression algorithms to be carried out to MBMS data head；

The transmitting element is additionally operable to, and the MBMS session informations for carrying ROHC compression algorithm information is sent to user equipment by multicast control channel, so that the user equipment is decompressed to MBMS data.

With reference to first aspect, or the first possible implementation of first aspect, or second of possible implementation of first aspect, or the third possible implementation of first aspect, either the 5th kind of possible implementation of the 4th kind of possible implementation or first aspect of first aspect, or first aspect the 6th kind of possible implementation, in the 7th kind of possible implementation, the MBMS is group service.

Second aspect there is provided a kind of user equipment, including：

Transmitting element, indicates, the MBMS interest indicates to include the corresponding Temporary Mobile Group Identity TMGI information of user equipment MBMS interested for sending multimedia broadcast-multicast service MBMS interest to source base station； Receiving unit, for receiving the switching command that the source base station is sent, the switching command is that the source base station is indicated and the TMGI information with the target BS of acquisition according to the MBMS interest, selection can provide the switching command sent after user equipment MBMS interested target BS, the switching command is generated by the target BS, is included in the user equipment in target MBMS single-frequency network areas and is provided the related multicast control channel MCCH information of MBMS interested；

Processing unit, for according to the MCCH information, group service to be received in the target MBMS single-frequency network areas by the receiving unit.

With reference to second aspect, in the first possible implementation, the processing unit is additionally operable to：When the user equipment can not receive the current MBMS of source base station, measurement report is generated；And the source base station is sent to by the transmitting element；Or

When the user equipment can not receive the current MBMS of source base station, generate measurement report and the source base station is sent to by the transmitting element, the MBMS interest that the measurement report includes reporting to the source base station is indicated；The MBMS interest indicates to include being used to identify the corresponding TMGI information of user equipment MBMS interested.

With reference to the first possible implementation of second aspect, in second of possible implementation, the blunt announcement of measurement includes following at least one information：

The cell ID of target MBMS single-frequency network areas；Or

The channel quality information of target MBMS single-frequency network areas；Or

The MBMS reception quality informations of target MBMS single-frequency network areas.

With reference to second of possible implementation of second aspect, the either possible implementation of the first of second aspect or second aspect, in the third possible implementation, the MBMS is group service.

The third aspect there is provided a kind of base station, including：

Receiving unit, the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for receiving the target BS that the target BS is sent, the target BS is located at target MBMS single-frequency network areas；

The transmitting element, is additionally operable to the corresponding TMGI information broadcast of the current MBMS of the target BS received notifying the user equipment in the MBMS single-frequency network areas of source.

With reference to the third aspect, in the first possible implementation, the transmitting element is additionally operable to, and works as institute When the MBMS information for stating base station itself changes, MCCH is notified to change configured information to the target BS；

The receiving unit is additionally operable to, and the MCCH that the MBMS information for receiving the target BS is notified when changing changes configured information；

The transmitting element is additionally operable to, and the MCCH of the target BS of reception is changed into the user equipment in the MBMS single-frequency network areas of configured information broadcast notice source.

With reference to the first possible implementation of the third aspect, or the third aspect, in second of possible implementation, the receiving unit is additionally operable to, and receives MBMS session requests and letter head compression protocol ROHC algorithm parameters that upper strata is sent；

The base station also includes：

With reference to second of possible implementation of the third aspect, the either possible implementation of the first of the third aspect or the third aspect, in the third possible implementation, the MBMS is group service.

Fourth aspect there is provided a kind of user equipment, including：

Receiving unit, broadcast for receiving source base station is notified, the broadcast notice includes the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for the target BS that the source base station is obtained, and the target BS is located at target MBMS single-frequency network areas；

The receiving unit is additionally operable to, when user equipment can not receive the current MBMS of the source base station, according to the corresponding TMGI information of the current MBMS of the target BS, multicast control channel MCCH information related user equipment MBMS interested in target MBMS single-frequency network areas is obtained；

Processing unit, for selecting the Target cell in the target MBMS single-frequency network areas to carry out cell reselection；

The receiving unit is additionally operable to, after cell reselection to the target MBMS single-frequency network areas, and group service is received according to the MCCH information. With reference to fourth aspect, in the first possible implementation, the receiving unit is additionally operable to, and receives the MCCH change configured informations that source base station broadcast is notified；The MCCH, which changes configured information, to be used to indicate that the MBMS information of target BS changes.

With reference to the first possible implementation of fourth aspect, or fourth aspect, in second of possible implementation, the receiving unit specifically for：

Obtain the corresponding TMGI of current MBMS of the target BS and the mapping relations of the affiliated cluster group of the user equipment；

Acquisition can provide the user equipment MBMS interested corresponding MCCH information of target BS；After gravity treatment to the Target cell, group service is received according to the MCCH information；The processing unit, specifically for：

When the user equipment can not receive the current MBMS of the source base station, according to the mapping relations, judge whether the corresponding TMGI of current MBMS of the target BS correspond to the TMGI in user equipment cluster group interested；And when judging that correspondence has the TMGI in user equipment cluster group interested, multicast control channel MCCH information related user equipment MBMS interested in target MBMS single-frequency network areas is obtained by the receiving unit；

The Target cell in the target MBMS single-frequency network areas is selected to carry out cell reselection.

With reference to second of possible implementation of fourth aspect, the either possible implementation of the first of fourth aspect or fourth aspect, in the third possible implementation, the MBMS is group service.

There is provided a kind of cluster communication method in terms of 5th, including：

Source base station receive target BS send the target BS the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS, the target BS be located at target MBMS single-frequency barrier i or；

The source base station receives the MBMS interest instruction that user equipment is sent, and the MBMS interest indicates to include being used to identify the corresponding TMGI information of user equipment MBMS interested；

When the user equipment can not receive the current MBMS of the source base station, the source base station indicates TMGI information corresponding with the current MBMS of the target BS according to the MBMS interest, and the target BS that selection can provide user equipment MBMS interested is switched over.

With reference to the 5th aspect, in the first possible implementation, methods described also includes：Source base station connects Receive the measurement report that the user equipment is sent；

The selection step, is specifically included：

When source base station judges that the user equipment can not receive the current MBMS of the source base station according to the measurement report, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

With reference to the 5th aspect, in second of possible implementation, the step of MBMS interest that the source base station receives user equipment transmission is indicated specifically includes：

Source base station receives the measurement report that the user equipment is sent, and the measurement report is indicated including MBMS interest；

The selection step, is specifically included：

With reference to second of possible implementation of the first possible implementation of the 5th aspect, or the 5th aspect, in the third possible implementation, the blunt announcements of measurement ^ also include：

Whether the MBMS mass of the user equipment reception source base station is less than the metrical information of configured threshold；When the MBMS mass that the user equipment receives source base station is less than configured threshold, then it can determine whether out that the user equipment can not receive the MBMS of source base station.

With reference to the 5th aspect, in the 4th kind of possible implementation, the selection step is specifically included：When source base station judges that the user equipment can not receive the current MBMS of the source base station by switch decision, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

With reference to the 5th aspect, or the first possible implementation in terms of the 5th, or second of possible implementation in terms of the 5th, or the third possible implementation in terms of the 5th, or the 4th kind of possible implementation in terms of the 5th, in the 5th kind of possible implementation, it is described that TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the step of target BS that selection can provide user equipment MBMS interested is switched over, specifically includes：

To the transmission handover request of the target BS of selection；The handover request carries the multicast control channel for indicating that the user equipment fed back the need for the target BS MBMS interested is related MCCH information；

Switching command is sent to the user equipment；The switching command carries the related MCCH information of user equipment MBMS interested.

With reference to the 5th aspect, or the first possible implementation in terms of the 5th, or second of possible implementation in terms of the 5th, or the third possible implementation in terms of the 5th, or the 4th kind of possible implementation in terms of the 5th, or the 5th kind of possible implementation in terms of the 5th, in the 6th kind of possible implementation, methods described also includes：

Receive MBMS session requests and letter head compression protocol ROHC algorithm parameters that upper strata is sent；According to the ROHC algorithm parameters, letter head compression protocol ROHC compression algorithms are carried out to MBMS data head；

The MBMS session informations for carrying ROHC compression algorithm information are sent to user equipment by multicast control channel, so that the user equipment is decompressed to MBMS data.

With reference to the 5th aspect, or the first possible implementation in terms of the 5th, or second of possible implementation in terms of the 5th, or the third possible implementation in terms of the 5th, either the 5th kind of possible implementation of the 4th kind of possible implementation of the 5th aspect or the 5th aspect, or the 6th kind of possible implementation in terms of the 5th, in the 7th kind of possible implementation, the MBMS is group service.

There is provided a kind of cluster communication method in terms of 6th, including：

User equipment sends multimedia broadcast-multicast service MBMS interest to source base station and indicated, the MBMS interest indicates to include the corresponding Temporary Mobile Group Identity TMGI information of user equipment MBMS interested；

The user equipment receives the switching command that the source base station is sent, the switching command is that the source base station is indicated and the TMGI information with the target BS of acquisition according to the MBMS interest, selection can provide the switching command sent after user equipment MBMS interested target BS, the switching command is generated by the target BS, is included in the user equipment in target MBMS single-frequency network areas and is provided the related multicast control channel MCCH information of MBMS interested；

The user equipment receives group service according to the MCCH information in the target MBMS single-frequency network areas.

With reference to the 6th aspect, in the first possible implementation, methods described also includes： When the user equipment can not receive the current MBMS of the source base station, generate measurement report and be sent to the source base station；Or

When the user equipment can not receive the current MBMS of the source base station, generate measurement report and be sent to the source base station, the MBMS interest that the measurement report includes reporting to source base station is indicated；The MBMS interest indicates to include the corresponding TMGI information of user equipment MBMS interested.

With reference to the first possible implementation of the 6th aspect, in second of possible implementation, the blunt announcement of measurement includes following at least one information：

The cell ID of target MBMS single-frequency network areas；Or

With reference to second of possible implementation of the 6th aspect, either the first possible implementation of the 6th aspect or the 6th aspect, in possible implementation in the 3rd, the MBMS is group service.

There is provided a kind of cluster communication method in terms of 7th, including：

The user equipment that the corresponding TMGI information broadcast of the current MBMS of the target BS received is notified to be located in the MBMS single-frequency network areas of source by the source base station.

With reference to the 7th aspect, in possible implementation in first, methods described also includes：When the MBMS information of the source base station itself changes, MCCH is notified to change configured information to the target BS；And receive the MCCH change configured informations notified when the MBMS information of the target BS changes；

The MCCH of the target BS of reception is changed into the user equipment in the MBMS single-frequency network areas of configured information broadcast notice source.

With reference to the first possible implementation of the 7th aspect, or the 7th aspect, in possible implementation in second, methods described also includes：

Receive MBMS session requests and letter head compression protocol ROHC algorithm parameters that upper strata is sent； Method is compressed；

With reference to second of possible implementation of the 7th aspect, either the first possible implementation of the 7th aspect or the 7th aspect, in possible implementation in the 3rd, the MBMS is group service.

Eighth aspect there is provided a kind of cluster communication method, including：

The broadcast that user equipment receives source base station is notified, the broadcast notice includes the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for the target BS that the source base station is obtained, and the target BS is located at target MBMS single-frequency network areas；

When user equipment can not receive the current MBMS of the source base station, according to the corresponding TMGI information of the current MBMS of the target BS, multicast control channel MCCH information related user equipment MBMS interested in target MBMS single-frequency network areas is obtained, selects the Target cell in the target MBMS single-frequency network areas to carry out cell reselection；

After cell reselection to the target MBMS single-frequency network areas, the user equipment receives group service according to the MCCH information.

With reference to eighth aspect, in possible implementation in first, methods described also includes：

User equipment receives the MCCH change configured informations that source base station broadcast is notified；The MCCH, which changes configured information, to be used to indicate that the MBMS information of target BS changes.

With reference to the first possible implementation of eighth aspect, or eighth aspect, in possible implementation in second, in addition to：

User equipment obtains the corresponding TMGI of current MBMS of the target BS and the mapping relations of the affiliated cluster group of the user equipment；

It is described the source base station can not be received when user equipment current MBMS when, according to the corresponding TMGI information of the current MBMS of the target BS, the step of obtaining the multicast control channel MCCH information of the MBMS correlations interested of the user equipment in target MBMS single-frequency network areas, specifically includes：When user equipment can not receive the current MBMS of the source base station, according to the mapping relations, when judging the current MBMS corresponding TMGI correspondences of the target BS and having the TMGI in user equipment cluster group interested, the user equipment in target MBMS single-frequency network areas is obtained interested MCCH information related MBMS.

With reference to second of possible implementation of eighth aspect, the either possible implementation of the first of eighth aspect or eighth aspect, in possible implementation in the 3rd, the MBMS is group service.

By implementing the embodiment of the present invention, UE is indicated to blunt MBMS interest on network side, network side is indicated according to the MBMS interest, the Target cell that selection can provide user equipment MBMS interested is switched over, greatly reduce the handover delays of UE between zones, prior art is solved in the handoff procedure of region it cannot be guaranteed that the successional technical problem of cluster communication service, and the Temporary Mobile Group Identity TMGI information in the target MBSFN regions that the base station in the base station in the base station broadcast source MBSFN regions for passing through source MBSFN regions and target MBSFN regions mutually sends and obtained, UE obtains the MCCH contents of target adjacent area in advance, ensure the continuity of the MBMS in service scenarios dynamic change, meet the good successional demand of business of the moon；The invention also achieves the good autgmentability of cluster communication, and substantially increase Radio Resource service efficiency；And reduce time delay when user equipment accesses cluster communication group.Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation of cluster communication method provided in an embodiment of the present invention；

Fig. 2 is the structural representation of another embodiment for the cluster communication method that the present invention is provided；

Fig. 3 is the structural representation of another embodiment for the cluster communication method that the present invention is provided；

Fig. 4 is the structural representation of another embodiment for the cluster communication method that the present invention is provided；

Fig. 5 is the structural representation of another embodiment for the cluster communication method that the present invention is provided；

Fig. 6 is the structural representation of another embodiment for the cluster communication method that the present invention is provided；

Fig. 7 is the structural representation of another embodiment for the cluster communication method that the present invention is provided；

Fig. 8 is the structural representation of base station provided in an embodiment of the present invention；

Fig. 9 is the structural representation of user equipment provided in an embodiment of the present invention；

Figure 10 is the structural representation of another embodiment for the base station that the present invention is provided； Figure 11 is the structural representation of another embodiment for the user equipment that the present invention is provided；

Figure 12 is the structural representation of trunked communication system provided in an embodiment of the present invention；

Figure 13 is the structural representation of another embodiment for the trunked communication system that the present invention is provided.Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

It is cluster communication method provided in an embodiment of the present invention referring to Fig. 1, is described from the base station side of the source MBMS single-frequency network areas of network side, this method includes：

S100:Source base station receives the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for the target BS that target BS is sent, and the target BS is located at target MBMS single-frequency network areas.

Specifically, target BS is the base station in the MBMS single-frequency network areas adjacent with the base station (i.e. source base station) of source MBMS single-frequency network areas；Source base station is mutually sent with target BS（It is exchanged with each other) the corresponding Temporary Mobile Group Identity TMGI information of respective current MBMS, MBMS TMGI list informations can be specifically exchanged with each other, i.e. source base station sends the corresponding TMGI of itself current MBMS to target BS, and source base station receives the corresponding TMGI of the current MBMS of target BS that target BS is sent.

Step S 102:The source base station receives the MBMS interest instruction that user equipment is sent, and the MBMS interest indicates to include being used to identify the corresponding TMGI information of user equipment MBMS interested.

Specifically, the MBMS interest indicates receive or want the MBMS received for the base station that notifies source MBMS single-frequency network areas, current UE, or no longer receives or be no longer want to the MBMS that receives;It will be appreciated that some UE have the ability for receiving MBMS, some UE do not have.The TMGI can be used for the ID for identifying MBMS, i.e., be used for the mark that unique mark multicast is serviced with broadcast bearer in MBMS；

Intelligible, step S102 can be performed simultaneously with step S100, or step S100 is first carried out, or step S102 is first carried out.

Step S104:It is described when the user equipment can not receive the current MBMS of the source base station Source base station indicates TMGI information corresponding with the current MBMS of the target BS according to the MBMS interest, and the target BS that selection can provide user equipment MBMS interested is switched over.

Specifically, user equipment described in the embodiment of the present invention can not receive source base station current MBMS specifically refer to user equipment receive source base station current MBMS have any problem, i.e. user equipment may be due to being interfered, or MBMS single-frequency network areas edge etc. in a steady stream itself is moved to, cause reception MBMS to have any problem.When user equipment can not receive MBMS, the Temporary Mobile Group Identity TMGI information for the target MBMS single-frequency network areas that source base station can be stored according to itself selects the target BS corresponding with the MBMS that UE is interested to switch over.

Further, source base station after step s 102, when can judge that the user equipment can not receive MBMS by switch decision HO Command, then performs step S104;Specifically, the MBMS interest for the user equipment to report that source base station is received indicates that the current MBMS that can receive source base station with implicit user equipment has any problem, need to switch over, source base station can judge that user equipment can not receive the current MBMS of source base station by HO Command, perform step S104;Or

The base station of source MBMS single-frequency network areas can be according to the measurement report for receiving user equipment upload, judge whether the user equipment can not receive the current MBMS of source base station, another embodiment for the cluster communication method that the specific present invention as shown in Figure 2 is provided, including：

Step S200:Source base station receives the corresponding information of current MBMS for the target BS that target BS is sent.

Step S202:The source base station receives the MBMS interest instruction that user equipment is sent, and the MBMS interest indicates to include being used to identify the corresponding TMGI information of user equipment MBMS interested.

Specifically, step S200 and step S202 may be referred to the step S100 and step S102 in Fig. 1 embodiments, repeat no more here.

Step S204:Source base station receives the measurement report that the user equipment is sent.

Specifically, whether the measurement report is less than the metrical information of configured threshold including the MBMS mass that the user equipment receives source base station；When the MBMS mass that the user equipment receives source base station is less than configured threshold, then it can determine whether out that the user equipment can not receive the MBMS of source base station.

Step S206:When judging that the user equipment can not receive the MBMS of source base station according to the measurement report, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over. Specifically, step S104 is may be referred to, is repeated no more here.

Further, step S202 can not also be performed in the embodiment of the present invention, directly perform step S204, now, the multimedia broadcast-multicast service MBMS interest that the measurement report of reception carries the user equipment to report indicates that the MBMS interest indicates the Temporary Mobile Group Identity TMGI for including being used to identify MBMS.

Yet further, the step S206 in step S104 and Fig. 2 embodiment in Fig. 1 embodiments can be specially：When judging that the user equipment can not receive the MBMS of source base station, to the transmission handover request of the target BS of selection；The handover request carries the multicast control channel for indicating that the user equipment fed back the need for the target BS MBMS interested is related（Multicast Control Channel, MCCH) information；Switching command is sent to the user equipment；The switching command carries the related MCCH information of user equipment MBMS interested.

It should be noted that the MCCH information in each embodiment of the invention can be the full detail or partial information of MCCH information.Below relatively, another embodiment for the cluster communication method that the present invention with reference to shown in Fig. 3 is provided, the embodiment for describing Fig. 1 of the present invention into Fig. 2 is corresponded to from UE sides, is specifically included：

Step S300:User equipment sends multimedia broadcast-multicast service MBMS interest to source base station and indicated, the MBMS interest indicates to include the corresponding Temporary Mobile Group Identity TMGI information of user equipment MBMS interested.

Step S302:The user equipment receives the switching command that the source base station is sent, the switching command is that the source base station is indicated and the TMGI information with the target BS of acquisition according to the MBMS interest, selection can provide the switching command sent after user equipment MBMS interested target BS, the switching command is generated by the target BS, is included in the user equipment in target MBMS single-frequency network areas and is provided the related multicast control channel MCCH information of MBMS interested.

Step S304:The user equipment receives group service according to the MCCH information in the target MBMS single-frequency network areas.

Specifically, in the present embodiment step S302, when the user equipment can not receive the MBMS of source base station, measurement report can also be generated and the source base station is sent to；Or when the user equipment can not receive the MBMS of source base station, it is described while measurement report can also be generated and the source base station is sent to Measurement report carries the multimedia broadcast-multicast service MBMS interest instruction that oriented source base station is reported；The MBMS interest indicates to include being used to identify the corresponding Temporary Mobile Group Identity TMGI of user equipment MBMS interested.

Further, the measurement report in the embodiment of the present invention includes following at least one information：The MBMS reception quality informations of the cell IDs of target MBMS single-frequency network areas, the channel quality information of target MBMS single-frequency network areas or target MBMS single-frequency network areas；Specifically, target MBMS single-frequency network areas（That is adjacent area) cell ID be Physical Cell Identifier and frequency information；The channel quality of adjacent area can be Reference Signal Received Power（ReferenceSignalReceivingPower, RSRP) and/or Reference Signal Received Quality（ReferenceSignalReceivingQuality, RSRQ) etc..

In detail, another embodiment for the cluster communication method that the present invention as shown in Figure 4 is provided, while further describing embodiments of the present invention from the base station and UE sides of the source MBMS single-frequency network areas of network side, this method includes：

Step S400:Source base station mutually sends the corresponding Temporary Mobile Group Identity TMGI information of each current MBMS with target BS；

Step S402:UE reports multimedia broadcast-multicast service MBMS interest to indicate to source base station；The MBMS interest indicates the Temporary Mobile Group Identity TMGI for including being used to identify UE MBMS interested;

Step S404:The multimedia broadcast-multicast service MBMS interest that source base station receives user equipment to report is indicated；

Step S406:When the user equipment can not receive the MBMS of source base station, the user equipment generation measurement report is simultaneously sent to the source base station；

Specifically, the embodiment of the present invention can not perform step S402, can be in step S406, when UE can not receive the MBMS of source base station, while generating measurement report and be sent to the source base station, the multimedia broadcast-multicast service MBMS interest reported to source base station is indicated.

Step S408:Source base station receives the measurement report that the user equipment is sent；When judging that the user equipment can not receive the MBMS of source base station according to the measurement report, the Temporary Mobile Group Identity TMGI information for the target MBMS single-frequency network areas for being indicated and being obtained according to the MBMS interest, selection can provide user equipment MBMS interested target MBMS single-frequency network areas；

Step S410:Source base station is sent to the target BS of the target MBMS single-frequency network areas of selection Handover request；

The handover request, which is carried, indicates that the target BS of the target MBMS single-frequency network areas needs the related multicast control channel MCCH information of the user equipment fed back MBMS interested；

Step S412:Switching command is sent to source base station by target BS；

The switching command carries the related MCCH information of user equipment MBMS interested.Step S414:The switching command is sent to UE by source base station;

Step S416:UE receives the group service of cluster communication application server transmission according to the multicast control channel MCCH information in the target MBMS single-frequency network areas.

It should be noted that the MBMS in each embodiment of the invention can be group service；By the above embodiment of the present invention, the handover delay that UE is moved to target MBMS single-frequency network areas from source MBMS single-frequency network areas is greatly reduced, it is ensured that the continuity of cluster communication service.It is another embodiment for the cluster communication method that the present invention is provided, from the base station of the source MBMS single-frequency network areas of network side referring to Fig. 5（That is source base station）Side is described, and this method includes：

Step S500:Source base station receives the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for the target BS that target BS is sent, and the target BS is located at target MBMS single-frequency network areas.

Step S502:The user equipment that the corresponding TMGI information broadcast of the current MBMS of the target BS received is notified to be located in the MBMS single-frequency network areas of source by the source base station.

Specifically, the broadcast notifies that the Service Area Identification of group service can be included（Service Area Identity 15, SIB15), the message such as the notice that changes of TMGI list informations and MCCH.

Further, the embodiment of the present invention can also include：When the MBMS information of source base station itself changes, the base station of target MBMS single-frequency network areas is notified（That is target BS) MCCH of local terminal changes configured information；And receive the MCCH change configured informations notified when the MBMS information of target BS changes；The MCCH of the target MBMS single-frequency network areas of reception is changed into the user equipment in the MBMS single-frequency network areas of configured information broadcast notice source.

It should be noted that MCCH business information, which changes, there occurs that change causes by MBMS, it is also possible to although MBMS is not changed, base station determines that changing transmission location or modulation coding mode of MBMS data etc. causes. Below relatively, another embodiment for the cluster communication method that the present invention with reference to shown in Fig. 6 is provided, the embodiment in describing Fig. 5 of the present invention is corresponded to from UE sides, is specifically included：

Step S500:The broadcast that user equipment receives source base station is notified, the broadcast notice includes the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for the target BS that the source base station is obtained, and the target BS is located at target MBMS single-frequency network areas.

Specifically, the source base station can be by the TMGI for the target MBMS single-frequency network areas for mutually sending and obtaining with target BS, or the TMGI of the target MBMS single-frequency network areas obtained by other approach carries out broadcast notice；The embodiment of the present invention can also include：The MCCH that the broadcast that user equipment receives source base station is notified changes configured information；The MCCH, which changes configured information, to be used to indicate that the MBMS information of target MBMS single-frequency network areas changes.

Step S502:When user equipment can not receive the current MBMS of the source base station, according to the corresponding TMGI information of the current MBMS of the target BS, multicast control channel MCCH information related user equipment MBMS interested in target MBMS single-frequency network areas is obtained, selects the Target cell in the target MBMS single-frequency network areas to carry out cell reselection.

Specifically, target BS is located in the Target cell；If target BS can provide user equipment MBMS interested, the Target cell where user equipment selects the target BS carries out cell reselection.

Step S504:After cell reselection to the target MBMS single-frequency network areas, the user equipment receives group service according to the MCCH information.

In detail, another embodiment for the cluster communication method that the present invention as shown in Figure 6 is provided, while further describing embodiments of the present invention from the source base station of network side and UE sides, this method includes：

Step S600:Source base station mutually sends the corresponding Temporary Mobile Group Identity TMGI information of each current MBMS with target BS；

Specifically, when cluster MBMS is changed, source base station can notify that neighbor cell, the i.e. message mutually sent include but is not limited to TMGI list informations and/or MCCH changes configured information by MCCH notification；

Step S602:Source base station broadcasts the current MBMS of the target MBMS single-frequency network areas received corresponding Temporary Mobile Group Identity TMGI information the user equipment in the MBMS single-frequency network areas of notice source；Step S604:When the user equipment is in Idle state, receives the source base station and notify the broadcast that the corresponding TMGI information of the current MBMS of the target MBMS single-frequency network areas received is carried out； Step S606:When the user equipment in Idle state can not receive the MBMS of source base station, user equipment is according to the corresponding TMGI information of the current MBMS of the target MBMS single-frequency network areas, the multicast control channel content for the Target cell that user equipment MBMS interested can be provided is obtained, selects the Target cell to carry out gravity treatment；

Specifically, IDLE states UE interested in MBMS group services is being received MCCH is read to adjacent area after adjacent area MCCH changes configured information to judge whether oneself business interested has begun to, and/or obtains the MCCH relevant informations of oneself business interested.The such as UE of IDLE states is interested in business 1, Target cell（That is adjacent cell）A provides business 1,2, and adjacent cell B provides business 1,3, and adjacent cell C provides business 2,4.When UE is moved to cell boarder, detect adjacent cell A, B, C signal, then UE wish to receive business 1, A is found after being screened, B cells all provide the business, and following UE can judge gravity treatment to the preferable A cells of quality according to A, quality Huo person's Lost bag quantity of B cells, the MCCH contents of A cells are then obtained, selection A cells carry out gravity treatment；

Step S608:User equipment is after gravity treatment to the Target cell, the group service that the Target cell according to the multicast control channel content reception is sent.

Further, in Fig. 5 and Fig. 6 embodiments of the present invention, UE can also include before the step of obtaining the multicast control channel content for the Target cell that can provide user equipment MBMS interested：

UE obtains the TMGI of the target MBMS single-frequency network areas and the mapping relations of the affiliated cluster group of the user equipment；When UE can not receive the MBMS of source base station, according to the mapping relations, judge that the TMGI correspondences of the target MBMS single-frequency network areas when having the TMGI in user equipment cluster group interested, obtain MCCH information related user equipment MBMS interested in target MBMS single-frequency network areas.That is, if UE is according to mapping relations, when judging the TMGI of the target MBMS single-frequency network areas and not having the TMGI in corresponding cluster group interested, then the multicast control channel content of target MBMS single-frequency network areas is not read.

Pass through source MBMS single-frequency network areas（That is serving cell) base station broadcast target MBMS single-frequency network areas（Adjacent cell) the ongoing cluster MBMSTMGI lists in base station and/or MCCH change configured information, IDLE states UE interested in MBMS group services is being received MCCH is read to adjacent area after adjacent area MCCH changes configured information to judge whether oneself business interested has begun to, and/or obtains the MCCH relevant informations of oneself business interested；UE obtains the multicast control channel content of MBMS interested Target cell in advance, it is ensured that the continuity of cluster communication service when UE switches. Another embodiment of the cluster communication method provided with reference to the present invention shown in Fig. 7, in above-mentioned Fig. 1 to Fig. 6 embodiment, can also carry out following steps：

Step S700:Multiple cell multicast coordination entity（Multi-cell/multicast Coordination Entity, MCE) receive the MBMS session requests indicated containing cluster communication from upper strata；

Step S702:MBMS session requests are transmitted to the base station in MBSFN regions by MCE, letter head compression protocol ROHC algorithm parameters are forwarded simultaneously, the ROHC algorithm parameters can include the relevant parameters such as ROHC synchronizing informations, such as compact model, do not take the lead the cycle of the bag of compression, first performs the relevant parameters such as the offset of bag that head compresses；

Step S704:Base station receives the MBMS session requests of upper strata transmission with after letter head compression protocol ROHC algorithm parameters, according to the ROHC algorithm parameters, carrying out believing head compression protocol ROHC compression algorithms to MBMS data head；

Specifically, the upper strata in step of embodiment of the present invention S704 can be upper layer node or the upper layer network element such as MCE or mobile management entity (Mobility Management Entity, MME), and the present embodiment is illustrated by taking MCE as an example；The group service that MCE with the addition of the TMGI of cluster communication in the session request is indicated, for transmitting the information on ROHC；The data being compressed in the embodiment of the present invention are the MBMS data that MBMS GW come, the control signaling packet not including synchronous protocol.

It should be noted that, the ROHC algorithm parameters are applied to the base station in all MBSFN regions, if BMSC is compressed to data head, the configured information of " RoHC compresses " should be carried in MBMS session requests, to allow MCE to know, RoHC compressions have been carried out in BMSC, and avoid indicating that RoHC compressions are being done in base station to the group service data of the MBMS sessions.Because MBMS can only use unidirectional mode Unidirectional mode compression, therefore MCE needs to carry profile in the MBMS conversation request messages for being sent to base station, this 5 parameters of MAX-CID, L, TIMER -1 and TIMER -2, so that all base stations under same MBSFN Area use identical RoHC compression parameters, it is ensured that the uniformity of compression result.Certainly, this 5 RoHC compression parameters of profile, MAX-CID, L, TIMER -1 and TIMER -2 by MCE can also be sent to base station by other message.

Step S706:Base station sends the MBMS session informations for carrying ROHC compression algorithm information by multicast control channel to user equipment；

Step S708:UE receives the phase for learning ROHC after the MCCH contents of base station transmission by parsing Hold inside the Pass, then perform the decompression to company-data bag.

ROHC compression algorithm data heads are used to cluster communication service by base station, the service efficiency of Radio Resource is substantially increased.

It should be noted that the MBMS in each embodiment of the invention can be group service.

By implementing the embodiment of the present invention, UE is indicated to blunt MBMS interest on network side, network side is indicated according to the MBMS interest, the Target cell that selection can provide user equipment MBMS interested is switched over, greatly reduce the handover delays of UE between zones, prior art is solved in the handoff procedure of region it cannot be guaranteed that the successional technical problem of cluster communication service, and the Temporary Mobile Group Identity TMGI information in the target MBSFN regions that the base station in the base station in the base station broadcast source MBSFN regions for passing through source MBSFN regions and target MBSFN regions mutually sends and obtained, UE obtains the MCCH contents of target adjacent area in advance, ensure the continuity of the MBMS in service scenarios dynamic change, meet the good successional demand of business of the moon；The invention also achieves the good autgmentability of cluster communication, and substantially increase Radio Resource service efficiency；And reduce time delay when user equipment accesses cluster communication group.For the ease of preferably implementing the such scheme of the embodiment of the present invention, with reference to the structural representation of the base station provided in an embodiment of the present invention shown in Fig. 8, correspond to the above method to describe the embodiment of device, base station 80 includes：(quantity of the processing unit 804 in base station 80 can be with one or more, in Fig. 8 by taking a processing unit as an example for receiving unit 800, transmitting element 802 and processing unit 804）.In some embodiments of the invention, receiving unit 800, transmitting element 802 and processing unit 804 can be connected by bus or other manner.

Receiving unit 800 is used for the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for receiving the target BS that the target BS is sent and the MBMS interest of reception user equipment transmission is indicated, the target BS is located at target MBMS single-frequency network areas, and the MBMS interest indicates to include being used to identify the corresponding TMGI information of user equipment MBMS interested；Processing unit 804 is used for when the user equipment can not receive the current MBMS of base station 80, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

Further, receiving unit 800 is additionally operable to, and receives the measurement report that the user equipment is sent；Processing unit 804 according to the measurement report specifically for when judging that the user equipment can not connect When receiving the current MBMS of base station 80, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

Yet further, the measurement report can include MBMS interest instruction；Processing unit 804, specifically for when judging that the user equipment can not receive the current MBMS of base station 80 according to the measurement report, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

Yet further, the measurement report can also include：Whether the MBMS mass of the user equipment reception base station 80 is less than the metrical information of configured threshold；When the MBMS mass that the user equipment receives base station 80 is less than configured threshold, then it can determine whether out that the user equipment can not receive the current MBMS of base station 80.

Yet further, processing unit 804 can be specifically for, the MBMS interest of the user equipment received according to receiving unit 800 is indicated, when judging that the user equipment can not receive the current MBMS of base station 80 by switch decision, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

Yet further, processing unit 804 can be specifically for the transmission handover request of the target BS of selection；The handover request carries the corresponding multicast control channel MCCH information of MBMS for indicating that the user equipment fed back the need for the target BS is interested；Switching command is sent to the user equipment；The switching command carries the corresponding MCCH information of user equipment MBMS interested.

Yet further, receiving unit 800 is additionally operable to, and receives MBMS session requests and letter head compression protocol ROHC algorithm parameters that upper strata is sent；

Base station 80 can also include：Compression unit, for according to the ROHC algorithm parameters, letter head compression protocol ROHC compression algorithms to be carried out to MBMS data heads；

Transmitting element 802, the MBMS session informations of ROHC compression algorithm information is carried for being sent by multicast control channel to user equipment, so that the user equipment is decompressed to MBMS data.

It will be appreciated that receiving unit 800 and transmitting element 802 can be the antenna of base station 80；The function that base station 80 can also include being used to store each unit in memory cell of various data etc., base station 80 can be right Existing mode, is repeated no more here.Accordingly, with reference to the structural representation of the user equipment provided in an embodiment of the present invention shown in Fig. 9, correspond to the above method to describe the embodiment of device, user equipment 90 includes：(quantity of the processing unit 904 in user equipment 90 can be with one or more, in Fig. 9 by taking a processing unit as an example for receiving unit 900, transmitting element 902 and processing unit 904）.In some embodiments of the invention, receiving unit 900, transmitting element 902 and processing unit 904 can be connected by bus or other manner.

Transmitting element 902 is used to send the instruction of multimedia broadcast-multicast service MBMS interest to source base station, and the MBMS interest indicates to include the corresponding Temporary Mobile Group Identity TMGI information of the MBMS interested of user equipment 90；

Receiving unit 900 is used to receive the switching command that the source base station is sent, the switching command is that the source base station is indicated and the TMGI information with the target BS of acquisition according to the MBMS interest, selection can provide the switching command sent after user equipment MBMS interested target BS, the switching command is generated by the target BS, is included in user equipment 90 in target MBMS single-frequency network areas and is provided the related multicast control channel MCCH information of MBMS interested；

Processing unit 904 is used for according to the MCCH information, and group service is received in the target MBMS single-frequency network areas by receiving unit 900.

Further, processing unit 904, are additionally operable to：

When user equipment 90 can not receive the current MBMS of source base station, measurement report is generated；And the source base station is sent to by transmitting element 902；Or

When user equipment 90 can not receive the current MBMS of source base station, generate measurement report and the source base station is sent to by transmitting element 902, the MBMS interest that the measurement report includes reporting to the source base station is indicated；The MBMS interest indicates to include being used to identify the corresponding TMGI information of the MBMS interested of user equipment 90.

Yet further, the blunt announcements of the measurement ^ include following at least one information：

The cell ID of target MBMS single-frequency network areas；Or

It will be appreciated that user equipment 90 includes but is not limited to mobile terminal, tablet personal computer, personal digital The function of each unit can be corresponded to reference to the specific implementation in above-mentioned each method embodiment in other electronic equipments such as assistant, user equipment 90, repeated no more here.For the ease of preferably implementing the such scheme of the embodiment of the present invention, the structural representation of another embodiment of the base station provided with reference to the present invention shown in Figure 10 corresponds to the above method to describe the embodiment of device, base station 100 includes：Receiving unit 1000 and transmitting element 1002.Wherein

Receiving unit 1000 is used for the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for receiving the target BS that the target BS is sent, and the target BS is located at target MBMS single-frequency network areas；

Transmitting element 1002 is used to the corresponding TMGI information broadcast of the current MBMS of the target BS received notifying the user equipment in the MBMS single-frequency network areas of source.

Further, transmitting element 1002 is additionally operable to, when the MBMS information of the base station itself changes, and notifies MCCH to change configured information to the target BS；

Receiving unit 1000 is additionally operable to, and the MCCH that the MBMS information for receiving the target BS is notified when changing changes configured information；

Transmitting element 1002 is additionally operable to, and the MCCH of the target BS of reception is changed into the user equipment in the MBMS single-frequency network areas of configured information broadcast notice source.

Yet further, receiving unit 1000 is additionally operable to, and receives MBMS session requests and letter head compression protocol ROHC algorithm parameters that upper strata is sent；

Base station 100 can also include：Compression unit, for according to the ROHC algorithm parameters, letter head compression protocol ROHC compression algorithms to be carried out to MBMS data heads；

Transmitting element 1002 is additionally operable to, and the MBMS session informations for carrying ROHC compression algorithm information is sent to user equipment by multicast control channel, so that the user equipment is decompressed to MBMS data.

It will be appreciated that receiving unit 1000 and transmitting element 1002 can be the antenna of base station 100；Base station 80 can also include the memory cell for being used to store various data, and for handling various data, control receiving unit 1000 is received and controlled processing unit that transmitting element 1002 is transmitted etc., the function of each unit can be corresponded to reference to the specific implementation in above-mentioned each method embodiment in base station 100, repeated no more here. Accordingly, the structural representation of another embodiment of the user equipment provided with reference to the present invention shown in Figure 11, corresponds to the above method to describe the embodiment of device, user equipment 110 includes：(quantity of the processing unit 1104 in user equipment 110 can be with one or more, in Figure 11 by taking a processing unit as an example for receiving unit 1100, transmitting element 1102 and processing unit 1104）.In some embodiments of the invention, receiving unit 1100, transmitting element 1102 and processing unit 1104 can be connected by bus or other manner.Wherein

The broadcast that receiving unit 1100 is used to receive source base station is notified, the broadcast notice includes the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for the target BS that the source base station is obtained, and the target BS is located at target MBMS single-frequency network areas；

Receiving unit 1100 is additionally operable to, when user equipment can not receive the current MBMS of the source base station, according to the corresponding TMGI information of the current MBMS of the target BS, multicast control channel MCCH the information related MBMS interested of user equipment 110 in target MBMS single-frequency network areas is obtained；

Processing unit 1104, for selecting the Target cell in the target MBMS single-frequency network areas to carry out cell reselection；

Receiving unit 1100 is additionally operable to, after cell reselection to the target MBMS single-frequency network areas, and group service is received according to the MCCH information.

Further, receiving unit 1100 is additionally operable to, and receives the MCCH change configured informations that source base station broadcast is notified；The MCCH, which changes configured information, to be used to indicate that the MBMS information of target BS changes.

Yet further, receiving unit 1100 specifically for：

Obtain the corresponding TMGI of current MBMS of the target BS and the mapping relations of cluster group belonging to user equipment 110；

Acquisition can provide the user equipment MBMS interested corresponding MCCH information of target BS；After gravity treatment to the Target cell, group service is received according to the MCCH information；Processing unit 1104, specifically for：

When user equipment 110 can not receive the current MBMS of the source base station, according to the mapping relations, judge the target BS the corresponding TMGI of current MBMS whether the TMGI in the cluster group interested of relative user equipment 110;And when judging that correspondence has the TMGI in the cluster group interested of user equipment 110, user equipment 110 in target MBMS single-frequency network areas is obtained by receiving unit 1100 and felt Multicast control channel MCCH the information related MBMS of interest；

It will be understood that, user equipment 110 includes but is not limited to other electronic equipments such as mobile terminal, tablet personal computer, personal digital assistant, the function of each unit can be corresponded to reference to the specific implementation in above-mentioned each method embodiment in user equipment 110, repeated no more here.For the ease of preferably implementing the such scheme of the embodiment of the present invention, present invention also offers the related system for implementing such scheme for coordinating.With reference to the structural representation of the trunked communication system provided in an embodiment of the present invention shown in Figure 12, it is described in detail：

Trunked communication system 120 includes base station 1200 and user equipment 1202, wherein

Base station 1200 may be referred to the base station 80 in above-mentioned Fig. 8 embodiments, repeat no more here；User equipment 1202 may be referred to the user equipment 90 in above-mentioned Fig. 9 embodiments, repeat no more here.Further, the structural representation of another embodiment for the trunked communication system that the present invention as shown in Figure 13 is provided, trunked communication system 130 includes base station 1300 and user equipment 1302, wherein

Base station 1300 may be referred to the base station 100 in above-mentioned Figure 10 embodiments, repeat no more here；User equipment 1302 may be referred to the user equipment 110 in above-mentioned Figure 11 embodiments, repeat no more here.

It will be appreciated that the function of each module can be implemented in above-described embodiment in trunked communication system 120 and trunked communication system 130 in the embodiment of the present invention, repeat no more here.Trunked communication system 120 and trunked communication system 130 can also include server, the equipment such as service center.

In summary, by implementing the embodiment of the present invention, UE is indicated to MBMS interest on network side, network side is indicated according to the MBMS interest, the Target cell that selection can provide user equipment MBMS interested is switched over, greatly reduce the handover delays of UE between zones, prior art is solved in the handoff procedure of region it cannot be guaranteed that the successional technical problem of cluster communication service, and the Temporary Mobile Group Identity TMGI information in the target MBSFN regions that the base station in the base station in the base station broadcast source MBSFN regions for passing through source MBSFN regions and target MBSFN regions mutually sends and obtained, UE obtains the MCCH contents of target adjacent area in advance, ensure the continuity of the MBMS in service scenarios dynamic change, meet the demand of service continuity；The invention also achieves the good autgmentability of cluster communication, and substantially increase Radio Resource service efficiency；And reduce time delay when user equipment accesses cluster communication group. One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, computer program is can be by instruct the hardware of correlation to complete, described program can be stored in a computer read/write memory medium, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic disc, CD, read-only memory（Read-Only Memory, ROM) or random access memory（Random Access Memory, RAM) etc..

Above disclosed is only a kind of preferred embodiment of the invention, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that realizing all or part of flow of above-described embodiment, and the equivalent variations made according to the claims in the present invention, still fall within and invent covered scope.

Claims

Claim

1st, a kind of base station, it is characterised in that including：

Receiving unit, for receiving the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for the target BS that the target BS is sent and receiving the MBMS interest instruction that user equipment is sent, the target BS is located at target MBMS single-frequency network areas, and the MBMS interest indicates to include being used to identify the corresponding TMGI information of user equipment MBMS interested；Processing unit, during current MBMS for the base station can not to be received when the user equipment, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

2nd, base station as claimed in claim 1, it is characterised in that：

The receiving unit is additionally operable to, and receives the measurement report that the user equipment is sent；

The processing unit, specifically for, when judging that the user equipment can not receive the current MBMS of the base station according to the blunt announcements of the measurement ^, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

3rd, base station as claimed in claim 2, it is characterised in that the measurement report is indicated including the MBMS interest；

The processing unit, specifically for when judging that the user equipment can not receive the current MBMS of the base station according to the measurement report, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

4th, base station as claimed in claim 2 or claim 3, it is characterised in that the measurement report also includes：Whether the MBMS mass of the user equipment reception base station is less than the metrical information of configured threshold；When the MBMS mass that the user equipment receives the base station is less than configured threshold, then it can determine whether out that the user equipment can not receive the current MBMS of the base station. 5th, base station as claimed in claim 1, it is characterized in that, the processing unit specifically for, the MBMS interest of the user equipment received according to the receiving unit is indicated, when judging that the user equipment can not receive the current MBMS of the base station by switch decision, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

6th, the base station as described in claim any one of 1-5, it is characterised in that the processing unit is specifically for the transmission handover request of the target BS of selection；The handover request carries the corresponding multicast control channel MCCH information of MBMS for indicating that the user equipment fed back the need for the target BS is interested；Switching command is sent to the user equipment；The switching command carries the corresponding MCCH information of user equipment MBMS interested.

7th, the base station as described in claim any one of 1-6, it is characterised in that the receiving unit is additionally operable to, receives MBMS session requests and letter head compression protocol ROHC algorithm parameters that upper strata is sent；The base station also includes：

Compression unit, for according to the ROHC algorithm parameters, letter head compression protocol ROHC compression algorithms to be carried out to MBMS data head；

Transmitting element, the MBMS session informations of ROHC compression algorithm information is carried for being sent by multicast control channel to user equipment, so that the user equipment is decompressed to MBMS data.

8th, the base station as described in claim any one of 1-7, it is characterised in that the MBMS is group service.

9th, a kind of user equipment, it is characterised in that including：

Transmitting element, indicates, the MBMS interest indicates to include the corresponding Temporary Mobile Group Identity TMGI information of user equipment MBMS interested for sending multimedia broadcast-multicast service MBMS interest to source base station；

Receiving unit, for receiving the switching command that the source base station is sent, the switching command is the source Base station is indicated and the TMGI information with the target BS of acquisition according to the MBMS interest, selection can provide the switching command sent after user equipment MBMS interested target BS, the switching command is generated by the target BS, is included in the user equipment in target MBMS single-frequency network areas and is provided the related multicast control channel MCCH information of MBMS interested；

Processing unit, for according to the MCCH information, group service to be received in the target MBMS single-frequency network areas by the receiving unit.

10th, user equipment as claimed in claim 9, it is characterised in that the processing unit, is additionally operable to：When the user equipment can not receive the current MBMS of source base station, measurement report is generated；And the source base station is sent to by the transmitting element；Or

When the user equipment can not receive the current MBMS of source base station, generate measurement report and the source base station is sent to by the transmitting element, the MBMS interest that the measurement report includes reporting to the source base station is indicated；The MBMS interest indicates to include being used to identify the corresponding TMGI information of user equipment MBMS interested.

11st, user equipment as claimed in claim 10, it is characterised in that the measurement report includes following at least one information：

The cell ID of target MBMS single-frequency network areas；Or

The channel quality information of target MBMS single-frequency network areas；Or

The MBMS reception quality informations of target MBMS single-frequency network areas.

12nd, the user equipment as described in claim any one of 9-11, it is characterised in that the MBMS is group service.

13rd, a kind of base station, it is characterised in that including：

Receiving unit, the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for receiving the target BS that the target BS is sent, the target BS is located at target MBMS single-frequency network areas；

Transmitting element, for by the current corresponding TMGI of MBMS of the target BS received Information broadcast notifies the user equipment being located in the MBMS single-frequency network areas of source.

14th, base station as claimed in claim 13, it is characterised in that the transmitting element is additionally operable to, when the MBMS information of the base station itself changes, notifies MCCH to change configured information to the target BS；

The receiving unit is additionally operable to, and the MCCH that the MBMS information for receiving the target BS is notified when changing changes configured information；

The transmitting element is additionally operable to, and the MCCH of the target BS of reception is changed into the user equipment in the MBMS single-frequency network areas of configured information broadcast notice source.

15th, the base station as described in claim 13 or 14, it is characterised in that the receiving unit is additionally operable to, receives MBMS session requests and letter head compression protocol ROHC algorithm parameters that upper strata is sent；

The base station also includes：

Compression unit, for according to the ROHC algorithm parameters, letter head compression protocol ROHC compression algorithms to be carried out to MBMS data head；

The transmitting element is additionally operable to, and the MBMS session informations for carrying ROHC compression algorithm information is sent to user equipment by multicast control channel, so that the user equipment is decompressed to MBMS data.

16th, the base station as described in claim any one of 13-15, it is characterised in that the MBMS is group service.

17th, a kind of user equipment, it is characterised in that including：

Receiving unit, broadcast for receiving source base station is notified, the broadcast notice includes the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for the target BS that the source base station is obtained, and the target BS is located at target MBMS single-frequency network areas；

The receiving unit is additionally operable to, when user equipment can not receive the current MBMS of the source base station, according to the corresponding TMGI information of the current MBMS of the target BS, multicast control channel MCCH information related user equipment MBMS interested in target MBMS single-frequency network areas is obtained； Processing unit, for selecting the Target cell in the target MBMS single-frequency network areas to carry out cell reselection；

The receiving unit is additionally operable to, after cell reselection to the target MBMS single-frequency network areas, and group service is received according to the MCCH information.

18th, user equipment as claimed in claim 17, it is characterised in that the receiving unit is additionally operable to, receives the MCCH change configured informations that source base station broadcast is notified；The MCCH, which changes configured information, to be used to indicate that the MBMS information of target BS changes.

19th, the user equipment as described in claim 17 or 18, it is characterised in that：

The receiving unit specifically for：

Obtain the corresponding TMGI of current MBMS of the target BS and the mapping relations of the affiliated cluster group of the user equipment；

Acquisition can provide the user equipment MBMS interested corresponding MCCH information of target BS；After gravity treatment to the Target cell, group service is received according to the MCCH information；The processing unit, specifically for：

When the user equipment can not receive the current MBMS of the source base station, according to the mapping relations, judge whether the corresponding TMGI of current MBMS of the target BS correspond to the TMGI in user equipment cluster group interested；And when judging that correspondence has the TMGI in user equipment cluster group interested, multicast control channel MCCH information related user equipment MBMS interested in target MBMS single-frequency network areas is obtained by the receiving unit；

The Target cell in the target MBMS single-frequency network areas is selected to carry out cell reselection.

20th, the user equipment as described in claim any one of 17-19, it is characterised in that the MBMS is group service.

21st, a kind of cluster communication method, it is characterised in that including：

Source base station receives the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for the target BS that target BS is sent, and it is mono- that the target BS is located at target MBMS Frequency barrier i or；

The source base station receives the MBMS interest instruction that user equipment is sent, and the MBMS interest indicates to include being used to identify the corresponding TMGI information of user equipment MBMS interested；

When the user equipment can not receive the current MBMS of the source base station, the source base station indicates TMGI information corresponding with the current MBMS of the target BS according to the MBMS interest, and the target BS that selection can provide user equipment MBMS interested is switched over.

22nd, method as claimed in claim 21, it is characterised in that：

Methods described also includes：Source base station receives the measurement report that the user equipment is sent；

The selection step, is specifically included：

When source base station judges that the user equipment can not receive the current MBMS of the source base station according to the measurement report, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

23rd, method as claimed in claim 22, it is characterised in that：

The step of MBMS interest that the source base station receives user equipment transmission is indicated, specifically includes：Source base station receives the measurement report that the user equipment is sent, and the measurement report is indicated including MBMS interest；

The selection step, is specifically included：

When source base station judges that the user equipment can not receive the current MBMS of the source base station according to the measurement report, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

24th, the method as described in claim 22 or 23, it is characterised in that the measurement report also includes：Whether the MBMS mass of the user equipment reception source base station is less than the metrical information of configured threshold；When the MBMS mass that the user equipment receives source base station is less than configured threshold, then it can determine whether out that the user equipment can not receive the MBMS of source base station.

25th, method as claimed in claim 21, it is characterised in that the selection step, is specifically included： Source base station judges that the user equipment can not receive the current of the source base station by switch decision

During MBMS, TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the target BS that selection can provide user equipment MBMS interested is switched over.

26th, the method as described in claim any one of 21-25, it is characterized in that, it is described that TMGI information corresponding with the current MBMS of the target BS is indicated according to the MBMS interest, the step of target BS that selection can provide user equipment MBMS interested is switched over, specifically includes：

To the transmission handover request of the target BS of selection；The handover request carries the multicast control channel MCCH information for indicating that the user equipment fed back the need for the target BS MBMS interested is related；

Switching command is sent to the user equipment；The switching command carries the related MCCH information of user equipment MBMS interested.

27th, the method as described in claim any one of 21-26, it is characterised in that methods described also includes：Receive MBMS session requests and letter head compression protocol ROHC algorithm parameters that upper strata is sent；According to the ROHC algorithm parameters, letter head compression protocol ROHC compression algorithms are carried out to MBMS data head；

The MBMS session informations for carrying ROHC compression algorithm information are sent to user equipment by multicast control channel, so that the user equipment is decompressed to MBMS data.

28th, the method as described in claim any one of 21-27, it is characterised in that the MBMS is group service.

29th, a kind of cluster communication method, it is characterised in that including：

User equipment sends multimedia broadcast-multicast service MBMS interest to source base station and indicated, the MBMS interest indicates to include the corresponding Temporary Mobile Group Identity TMGI information of user equipment MBMS interested；

The user equipment receives the switching command that the source base station is sent, and the switching command is that the source base station indicates and the TMGI information with the target BS of acquisition that selection can be carried according to the MBMS interest For the switching command sent after user equipment MBMS interested target BS, the switching command is generated by the target BS, is included in the user equipment in target MBMS single-frequency network areas and is provided the related multicast control channel MCCH information of MBMS interested；

The user equipment receives group service according to the MCCH information in the target MBMS single-frequency network areas.

30th, method as claimed in claim 29, it is characterised in that methods described also includes：When the user equipment can not receive the current MBMS of the source base station, generate measurement report and be sent to the source base station；Or

When the user equipment can not receive the current MBMS of the source base station, generate measurement report and be sent to the source base station, the MBMS interest that the measurement report includes reporting to source base station is indicated；The MBMS interest indicates to include the corresponding TMGI information of user equipment MBMS interested.

31st, method as claimed in claim 30, it is characterised in that the measurement report includes following at least one information：

The cell ID of target MBMS single-frequency network areas；Or

The channel quality information of target MBMS single-frequency network areas；Or

The MBMS reception quality informations of target MBMS single-frequency network areas.

32nd, the method as described in claim any one of 29-31, it is characterised in that the MBMS is group service.

33rd, a kind of cluster communication method, it is characterised in that including：

Source base station receive target BS send the target BS the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS, the target BS be located at target MBMS single-frequency barrier i or；

The user equipment that the corresponding TMGI information broadcast of the current MBMS of the target BS received is notified to be located in the MBMS single-frequency network areas of source by the source base station. 34th, method as claimed in claim 33, it is characterised in that methods described also includes：When the MBMS information of the source base station itself changes, notified to the target BS

MCCH changes configured information；And receive the MCCH change configured informations notified when the MBMS information of the target BS changes；

The MCCH of the target BS of reception is changed into the user equipment in the MBMS single-frequency network areas of configured information broadcast notice source.

35th, the method as described in claim 33 or 34, it is characterised in that methods described also includes：Receive MBMS session requests and letter head compression protocol ROHC algorithm parameters that upper strata is sent；According to the ROHC algorithm parameters, letter head compression protocol ROHC compression algorithms are carried out to MBMS data head；

The MBMS session informations for carrying ROHC compression algorithm information are sent to user equipment by multicast control channel, so that the user equipment is decompressed to MBMS data.

36th, the method as described in claim any one of 33-35, it is characterised in that the MBMS is group service.

37th, a kind of cluster communication method, it is characterised in that including：

The broadcast that user equipment receives source base station is notified, the broadcast notice includes the corresponding Temporary Mobile Group Identity TMGI information of present multimedia broadcasting multicast service MBMS for the target BS that the source base station is obtained, and the target BS is located at target MBMS single-frequency network areas；

When user equipment can not receive the current MBMS of the source base station, according to the corresponding TMGI information of the current MBMS of the target BS, multicast control channel MCCH information related user equipment MBMS interested in target MBMS single-frequency network areas is obtained, selects the Target cell in the target MBMS single-frequency network areas to carry out cell reselection；

After cell reselection to the target MBMS single-frequency network areas, the user equipment receives group service according to the MCCH information.

38th, method as claimed in claim 37, it is characterised in that methods described also includes: User equipment receives the MCCH change configured informations that source base station broadcast is notified；The MCCH, which changes configured information, to be used to indicate that the MBMS information of target BS changes.

39th, the method as described in claim 36 or 38, it is characterised in that also include：

User equipment obtains the corresponding TMGI of current MBMS of the target BS and the mapping relations of the affiliated cluster group of the user equipment；

It is described the source base station can not be received when user equipment current MBMS when, according to the corresponding TMGI information of the current MBMS of the target BS, the step of obtaining the multicast control channel MCCH information of the MBMS correlations interested of the user equipment in target MBMS single-frequency network areas, specifically includes：When user equipment can not receive the current MBMS of the source base station, according to the mapping relations, when judging the current MBMS corresponding TMGI correspondences of the target BS and having the TMGI in user equipment cluster group interested, MCCH information related user equipment MBMS interested in target MBMS single-frequency network areas is obtained.

40th, the method as described in claim any one of 37-39, it is characterised in that the MBMS is group service.