CN109547228A

CN109547228A - Transmission method, base station and the colony terminal of rail traffic group service

Info

Publication number: CN109547228A
Application number: CN201710691492.7A
Authority: CN
Inventors: 汪振东; 蔡文涛; 袁乃华; 周金平
Original assignee: TD Tech Ltd
Current assignee: TD Tech Ltd; TD Tech Chengdu Co Ltd
Priority date: 2017-08-14
Filing date: 2017-08-14
Publication date: 2019-03-29
Anticipated expiration: 2037-08-14
Also published as: CN109547228B

Abstract

The present invention provides transmission method, base station and the colony terminals of a kind of rail traffic group service.The transmission method of rail traffic group service provided by the invention includes: the access net that the presence of hot net is broken down, and the first colony terminal, which is resident to indigo plant, nets corresponding cell；First colony terminal is that failure accesses any terminal off the net；RRC connection setup complete message to the indigo plant that first colony terminal sends the PLMN mark for carrying red net nets base station；Indigo plant net base station is identified according to the PLMN of red net, determines that the equipment of the core network for being used for transmission group service is red net equipment of the core network；When the first colony terminal is the originating end of group service, the data packet of group service is sent to red net equipment of the core network by the first colony terminal；Red net equipment of the core network sends data packets to corresponding receiving end by base station.Transmission method, base station and the colony terminal of rail traffic group service of the invention improve the reliability of group service transmission.

Description

Transmission method, base station and the colony terminal of rail traffic group service

Technical field

The present invention relates to communication engineering technology more particularly to a kind of transmission method of rail traffic group service, base station and Colony terminal.

Background technique

The group service of existing rail traffic is using long term evolution (Long Term Evolution, abbreviation of new generation LTE) standard carries, i.e., group service is carried by a LTE communication net.The LTE system of a new generation is compared to upper one For the communication system in generation, a very big advantage is the multiple business that can be integrated in bearing track communication project, is such as based on Train Control (Communication-Based Train Control, abbreviation CBTC), group service etc., greatly reduce The investment and maintenance cost of client.

But group service is by a LTE communication net when being carried, when the access of at least one of communication network is netted out When existing failure, easily causes group service and interrupted in some region even the whole network, and then whole railway operation is caused bad Therefore consequence is carried, transmission trunking service reliability is not high using a LTE communication net.

Summary of the invention

The present invention provides transmission method, base station and the colony terminal of a kind of rail traffic group service, to promote cluster industry The reliability of business transmission.

In a first aspect, the present invention provides a kind of transmission method of rail traffic group service, group service passes through bearing rail The blue net of red net and carrying based on Train Control CBTC business of trace integration traffic service is carried, the frequency point of the red net Priority is higher than the priority of the frequency point of the blue net, and each colony terminal is opened an account on red net equipment of the core network, the method packet It includes:

When at least one access net of the red net breaks down, the first colony terminal is resident corresponding small to the blue net Qu Hou, the wireless heterogeneous networks that blue net base station corresponding with first colony terminal is sent according to first colony terminal The public land mobile network PLMN of the red net carried in RRC connection setup complete message is identified, and determination is used for transmission collection The equipment of the core network of group business is the red net equipment of the core network；First colony terminal is that failure accesses any end off the net End；

When thering is group service to need to transmit and in the corresponding cell in the blue net base station there are at least one receiving end, then exist After the carrying of group service is established, the blue net base station receives the group service that the red net equipment of the core network is sent Data packet；

The blue net base station sends the data packet at least one corresponding receiving end.

Method as described above is established in the RRC connection that the blue net base station is sent according to the first colony terminal and completes to disappear The PLMN of the red net carried in breath is identified, and determines that the equipment of the core network for being used for transmission group service is the red net core net Before equipment, the method also includes:

The blue net base station receives the RRC connection that first colony terminal is sent and establishes request；Request is established in RRC connection In include first colony terminal initial marking；

The blue net base station establishes request according to the RRC connection and sends RRC connection configuration to first colony terminal Information is connect so that first colony terminal is set up with the RRC of the blue net base station；

Correspondingly, it is carried in the RRC connection setup complete message that the blue net base station is sent according to the first colony terminal The red net PLMN mark, determine be used for transmission group service equipment of the core network be the red net equipment of the core network it Afterwards, further includes:

The initial marking is sent to the red net equipment of the core network by the blue net base station, so that the red net core net For equipment after being authenticated successfully according to the initial marking to first colony terminal, the first colony terminal of Xiang Suoshu sends authentication Success message.

Method as described above, the red neighboring community for netting corresponding each cell configuration does not include that the blue net is corresponding Each cell, the blue neighboring community for netting corresponding each cell configuration does not include the corresponding each cell of the red net.

Second aspect, the present invention also provides a kind of transmission method of rail traffic group service, group service passes through carrying The blue net of red net and carrying based on Train Control CBTC business of track comprehensive traffic business is carried, the frequency point of the red net Priority be higher than the blue net frequency point priority, each colony terminal opens an account on red net equipment of the core network, comprising:

When at least one access net of the red net breaks down, the first colony terminal carries out cell reselection, is resident to indigo plant Corresponding cell is netted, first colony terminal is that failure accesses any terminal off the net；

First colony terminal sends radio resource control RRC connection setup complete message to corresponding blue net base station, described The mark of the PLMN of the red net is carried in RRC connection setup complete message, so that the blue net base station is according to the PLMN's Mark determines that the equipment of the core network for being used for transmission group service is the red net equipment of the core network；

When the originating end that first colony terminal is group service, after the carrying of the group service is established, institute It states the first colony terminal and sends the data packet of the group service to the red net equipment of the core network, so that the red net core net After the data packet is sent to the blue net base station and/or red net base station by equipment, the blue net base station and/or red net base station point The data packet at least one corresponding receiving end is not sent to, the receiving end is same to belong to the originating end The terminal of group.

Method as described above sends radio resource control RRC connection to corresponding blue net base station in the first colony terminal It establishes before completing message, further includes:

First colony terminal sends RRC connection and establishes request to the blue net base station；RRC connection is established in request and is wrapped Include the initial marking of the originating end；

First colony terminal receives the blue net base station and establishes the RRC connection that request is sent according to the RRC connection Configuration information, and set up according to the RRC connection configuration information and connect with the RRC of the blue net base station；

Correspondingly, radio resource control RRC connection foundation is sent to corresponding blue net base station in the first colony terminal to complete After message, further includes:

First colony terminal receives the authentication success that the red net equipment of the core network is sent according to the initial marking Message.

Method as described above, further includes:

When at least one failure access network recovery of the red net is normal and the second colony terminal belongs to recovery and normally connects When entering colony terminal off the net, second colony terminal carries out cell reselection, is resident cell corresponding to the red net；

It is described after the carrying of the group service is established when the originating end that second colony terminal is group service Second colony terminal sends the data packet of the group service to the red net equipment of the core network, so that the red net core net is set It is standby that the data packet is sent to respectively by least one corresponding reception by the red net base station and/or blue net base station End, the originating end is the terminal belonged in same group with the receiving end.

The third aspect, the present invention also provides a kind of base station, group service passes through the red net of bearing track comprehensive traffic business It is carried with blue net of the carrying based on Train Control CBTC business, the priority of the frequency point of the red net is higher than the blue net The priority of frequency point, each colony terminal are opened an account on the red net equipment of the core network, and the base station includes:

Determining module breaks down at least one access net when the red net, and the first colony terminal is resident to institute After stating the corresponding cell of blue net, according to the radio resource control RRC connection setup complete message of first colony terminal transmission The public land mobile network PLMN of the red net of middle carrying is identified, and determines that the equipment of the core network for being used for transmission group service is The red net equipment of the core network；First colony terminal is corresponding with the base station and is that failure accesses cluster end off the net End；

Receiving module, for group service to need to transmit and there are at least one to connect in the corresponding cell in the base station when having Receiving end receives the group service that the red net equipment of the core network is sent after the carrying of the group service is established Data packet；

Sending module, for sending the data packet at least one corresponding receiving end.

Fourth aspect, the present invention also provides a kind of colony terminal, group service passes through bearing track comprehensive traffic business The blue net of red net and carrying based on Train Control CBTC business is carried, and the priority of the frequency point of the red net is higher than the indigo plant The priority of the frequency point of net, colony terminal are opened an account on red net equipment of the core network, the colony terminal be when the red net extremely When a few access net breaks down, failure accesses colony terminal off the net, comprising:

Cell reselection module is resident to indigo plant for carrying out cell reselection and nets corresponding cell；

Sending module, it is described for sending radio resource control RRC connection setup complete message to corresponding blue net base station The mark of the PLMN of the red net is carried in RRC connection setup complete message, so that the blue net base station is according to the PLMN's Mark determines that the equipment of the core network for being used for transmission group service is the red net equipment of the core network；

The sending module is also used to when the originating end that the colony terminal is group service, in the group service After carrying is established, the data packet of the group service is sent to the red net equipment of the core network, so that the red net core net After the data packet is sent to the blue net base station and/or red net base station by equipment, the blue net base station and/or red net base station point The data packet at least one corresponding receiving end is not sent to, the receiving end is same to belong to the originating end The terminal of group.

5th aspect, the present invention also provides a kind of systems, including described in base station and fourth aspect described in the third aspect Colony terminal.

The transmission method of rail traffic group service of the invention includes: that event occurs at least one access net of hot net Barrier, the first colony terminal carry out cell reselection, are resident to indigo plant and net corresponding cell；First colony terminal accesses off the net for failure Any terminal；After the first colony terminal end is established and connect with the RRC of blue net base station, RRC connection setup complete message is sent Base station is netted to indigo plant, the PLMN mark of red net is carried in RRC connection setup complete message；It is the first colony terminal institute that the indigo plant, which nets base station, The corresponding base station of serving cell；Indigo plant net base station is identified according to the PLMN of red net, determines the core for being used for transmission group service Net equipment is red net equipment of the core network；When the first colony terminal is the originating end of group service, built in the carrying of group service After vertical, the data packet of group service is sent to red net equipment of the core network by the first colony terminal；Red net equipment of the core network will count At least one base station where each receiving end is sent to according to packet, the data packet of group service is sent to respective correspondence by each base station Receiving end.The transmission method of rail traffic group service of the invention improves the reliability of group service transmission.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.

Fig. 1 is a kind of system architecture diagram provided by the present application；

Fig. 2 is the signaling process figure one of the transmission method of rail traffic group service provided by the invention；

Fig. 3 is the signaling process figure two of the transmission method of rail traffic group service provided by the invention；

Fig. 4 is the signaling process figure three of the transmission method of rail traffic group service provided by the invention；

Fig. 5 is the signaling process figure four of the transmission method of rail traffic group service provided by the invention；

Fig. 6 is the structural schematic diagram of base station embodiment one provided by the invention；

Fig. 7 is the structural schematic diagram of colony terminal embodiment one provided by the invention；

Fig. 8 is the structural schematic diagram of colony terminal embodiment two provided by the invention；

Fig. 9 is the structural schematic diagram of the Transmission system embodiment of rail traffic group service provided by the invention.

Specific embodiment

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.

Group service in the embodiment of the present invention refers to the group service in rail traffic.

Fig. 1 is a kind of system architecture diagram provided by the present application；Referring to Fig. 1, which includes the first equipment of the core network 11, the second equipment of the core network 12, multiple first base stations 13, multiple second base stations 14, multiple colony terminals 15, colony terminal 15 can For vehicle mounted communication terminal or hand-held station.Wherein, the first equipment of the core network 11 and multiple first base stations 13 are comprehensive for bearing track The equipment of the red net of traffic service, the second equipment of the core network 12 and multiple second base stations 14 are setting for the blue net of carrying CBTC business It is standby.Frequency priority is configured in first base station 13 and the second base station 14: the priority of the frequency point of red net is higher than the frequency point of blue net Priority；Indigo plant net base station is also configured with Radio Access Network shared (Radio Access Network Sharing, abbreviation RAN Sharing) characteristic.Each colony terminal 15 is opened an account on the first equipment of the core network 11, that is, each colony terminal 15 is basic Attribute information is stored on the first equipment of the core network 11.The content that essential attribute information includes is referring to relevant criterion.

Specifically, since the priority of the frequency point of red net is higher than the priority of the frequency point of blue net, in each access net of red net When working normally, group service is completed by each equipment of red net.Hot net at least one access net (base station fault or Network failure corresponding with base station) when breaking down, each first colony terminal in corresponding each cell is netted in each failure access It is resident by cell reselection to indigo plant and is netted in corresponding cell, and establish the RRC connection for netting base station with corresponding indigo plant, netting base station with indigo plant After establishing RRC connection, according to the RAN Sharing characteristic of blue net base station, the core net of red net is routed to, red net core net is passed through Equipment, blue net base station, red net non-faulting base station (there are receiving ends in the corresponding cell of hot net) complete group service jointly. The transmission method of rail traffic group service of the invention, due to using two network carrying group services, and blue net base station is matched RAN Sharing characteristic is set, in the case where the base station that one throws the net network sends failure, another network can continue to carry industry Business improves the reliability of group service transmission.

The transmission method of rail traffic group service of the invention is described in detail using specific embodiment below.

Fig. 2 is the signaling process figure one of the transmission method of rail traffic group service provided by the invention, as shown in Fig. 2, The method of the present embodiment may include:

Step S101, at least one access net of hot net breaks down, and the first colony terminal carries out cell reselection, is resident Corresponding cell is netted to indigo plant；First colony terminal is that failure accesses any terminal off the net；

Step S102, it after the first colony terminal is established and connect with the RRC of blue net base station, sends RRC connection and has established At message to indigo plant net base station, the PLMN mark of red net is carried in RRC connection setup complete message；It is the first cluster that the indigo plant, which nets base station, The corresponding base station of serving cell where terminal；

Step S103, blue net base station is identified according to the PLMN of red net, determines the equipment of the core network for being used for transmission group service For red net equipment of the core network；

When the first colony terminal is the originating end of group service, step S104~step S110 is executed.

Step S104, after the carrying of group service is established, the first colony terminal sends the data packet of group service To red net equipment of the core network；

When there is at least one receiving end in the corresponding cell in indigo plant net base station and all receiving ends it is blue net it is corresponding In cell, step S105~S106 is executed；Receiving end is the terminal belonged in same group with originating end；

Step S105, the data packet of group service is sent to blue net base station by red net equipment of the core network；

Step S106, the indigo plant nets base station and the data packet of group service is sent at least one corresponding receiving end.

When there are exist in the corresponding cell at least one receiving end and red net base station in the corresponding cell in indigo plant net base station At least one receiving end executes step S107~S110；

Step S107, the data packet of group service is sent to blue net base station by red net equipment of the core network；

Step S108, the data packet of group service is sent to red net base station by red net equipment of the core network；

Step S109, the data packet of group service is sent at least one corresponding receiving end by blue net base station；

Step S110, the data packet of group service is sent at least one corresponding receiving end by red net base station.

Specifically, the application scenarios of the present embodiment are in each access net of red net in the presence of the access net to break down.Access Net includes the corresponding network in base station and base station, wherein base station may include remote radio unit (RRU) (Remote Radio Unit, letter Claim RRU) and indoor baseband processing unit (Building Baseband Unit, abbreviation BBU), at this point, access net failure refers to The corresponding network failure of RRU failure and/or BBU failure and/or base station.

When each access net of hot net works normally, the group service of rail traffic passes through red net equipment of the core network and red Base station is netted to complete；When each access net of hot net breaks down, the group service of rail traffic by red net equipment of the core network, It completes indigo plant net base station；Hot net part access net break down and the receiving end of group service be included in it is red net it is corresponding small Terminal in area, when being also included within the blue terminal for netting corresponding cell, the group service of rail traffic is set by red net core net Standby, blue net base station, red net base station are completed；The access net of hot net breaks down and the receiving end of group service only includes being resident Terminal in the corresponding cell of red net, the originating end of group service are the terminal resided in the corresponding cell of red net, track The group service of traffic is completed by red net equipment of the core network and red net base station.

Red net and carrying of the group service of rail traffic in the present embodiment by bearing track comprehensive traffic business The blue net of CBTC business is carried, and the frequency point of the frequency point of red net and blue net is not identical, and the priority of the frequency point of red net is higher than indigo plant The priority of the frequency point of net, each colony terminal are opened an account on red net equipment of the core network, are only matched in the PLMN list of each colony terminal Be equipped with the PLMN of red net, colony terminal be can be vehicle mounted communication terminal or hand-held station.Wherein, red net is two identical with blue net Network, and red net and blue net are the technology of the prior art maturation, the present embodiment no longer elaborate red net and it is blue net it is respective Feature.

Wherein, the priority of the frequency point on each base station of red net configured with red net is the priority of highest, the blue frequency point netted For secondary high information.The priority of the frequency point configured with red net is highest, the priority of the frequency point of indigo plant net on each base station of indigo plant net Each base station for secondary high information, indigo plant net is also configured with RAN Sharing characteristic.

When at least one access net of hot net breaks down, net is accessed for each failure, failure access net is corresponding The first colony terminal just can not continue to access red net each of in each cell, and each first colony terminal can be resident by cell reselection The indigo plant net corresponding cell high to frequency point time, that is, reside in the corresponding cell of network of sub-priority frequency point.That is, working as Red net A access net break down after, A access the first colony terminal off the net just can not and A access between the base station a off the net into Row interaction, at this point, each first colony terminal, which can be resident to indigo plant by cell reselection, nets corresponding cell, i.e., each first colony terminal And the base station b corresponding with the base station a of red net interacts in indigo plant net.The region that blue net is covered with base station corresponding in red net is phase With.

After the first colony terminal is resident and nets corresponding cell to indigo plant, the first colony terminal carries out cell reselection, be resident to Indigo plant nets corresponding cell.

After the first colony terminal connect foundation with the RRC of indigo plant net base station, the first colony terminal sends RRC connection and establishes It completes message to indigo plant and nets base station, the PLMN mark of red net is carried in RRC connection setup complete message.

Indigo plant net base station receives RRC connection setup complete message, according to the red net carried in RRC connection setup complete message PLMN mark determines that the equipment of the core network for being used for transmission group service is red net equipment of the core network.

First colony terminal can by the PLMN identification list in SIB1 system message select with the first colony terminal in The mark of PLMN in the PLMN list of storage carries the mark of the PLMN of selection in RRC connection setup complete message, because It is therefore taken in RRC connection setup complete message for the PLMN that the PLMN in the PLMN list that stores in each colony terminal is red net Band be red net PLMN mark.In addition, since indigo plant net base station is configured with RAN Sharing characteristic, under indigo plant net base station There is the mark of the PLMN of red net in the SIB1 system message of hair, also there is the mark of the blue PLMN netted.

After determining that the equipment of the core network for being used for transmission group service is red net equipment of the core network, the first colony terminal is carried out Authentication.

Specifically, indigo plant nets base station after determining that the equipment of the core network for being used for transmission group service is red net equipment of the core network, First colony terminal can be connect in the RRC connection foundation request being related to during establishing with the RRC of indigo plant net base station and be taken The initial marking of the originating end of band is sent to red net equipment of the core network, red net equipment of the core network according to the initial marking of originating end into Row authentication then returns to the first colony terminal when authenticating successfully and authenticates successful message.

Wherein, specific authorizing procedure is normal process, and this embodiment is not repeated.

After the first colony terminal authenticates successfully, if the first cluster receiving end is the originating end of group service, first After colony terminal authenticates successfully, the carrying of group service is established, after the carrying of group service is established, the first colony terminal will The data packet of group service is sent to red net equipment of the core network.

When there is at least one receiving end in the corresponding cell in indigo plant net base station and all receiving ends it is blue net it is corresponding In cell, then the data packet of group service is sent to indigo plant net base station by red net equipment of the core network；The indigo plant nets base station for cluster industry The data packet of business is sent at least one corresponding receiving end.Receiving end is the terminal belonged in same group with originating end.

When there are exist in the corresponding cell at least one receiving end and red net base station in the corresponding cell in indigo plant net base station The data packet of group service is sent to indigo plant net base station and red net base station by least one receiving end, red net equipment of the core network；It should The data packet of group service is sent at least one corresponding receiving end by indigo plant net base station；Red net base station is by the data of group service Packet is sent at least one corresponding receiving end.

Specifically, the data packet of group service can be sent to by the first colony terminal belongs to same a group with the first colony terminal Other colony terminal-receiving ends in group.Receiving end have it is multiple, receiving end may all in the corresponding cell in indigo plant net base station, It may also be all in the corresponding cell in red net base station, it is also possible to which a part is in the corresponding cell in indigo plant net base station, another part All in the corresponding cell in red net base station.Due to colony terminal can be reported to red net equipment of the core network it is current belonging to base station, the One colony terminal send RRC and establish connection complete message and be after carry group identification and red net equipment of the core network is stored with The colony terminal that each group includes, therefore, red net equipment of the core network, which can determine, be sent to which for the data packet of group service A or those base stations.

Therefore, when in the corresponding cell in indigo plant net base station there are at least one receiving end and all receiving ends are in blue net pair In the cell answered, the data packet of group service is sent to indigo plant net base station by red net equipment of the core network；Indigo plant nets base station for cluster industry The data packet of business is sent at least one corresponding receiving end.

It will be appreciated by persons skilled in the art that for other blue net base stations including receiving end, red net core net is set It is standby that the data packet of group service can be also sent to these indigo plant net base stations；These indigo plant net base stations are respectively by the data packet of group service It is sent at least one corresponding receiving end.

It is netted when the indigo plant and at least one receiving end is not present in the corresponding cell in base station, and all receiving ends are corresponded in indigo plant net Cell in, then the data packet of group service can be sent to other blue net base stations including receiving end by red net equipment of the core network； The data packet of group service is sent at least one corresponding receiving end respectively by these indigo plant net base stations.

When there are exist extremely in the corresponding cell at least one receiving end and red net base station in the corresponding cell in indigo plant net base station The data packet of group service is sent to indigo plant net base station and red net base station by a few receiving end, red net equipment of the core network；The indigo plant It nets base station and the data packet of group service is sent at least one corresponding receiving end；Red net base station is by the data packet of group service It is sent at least one corresponding receiving end.

It will be appreciated by persons skilled in the art that when multiple red net base stations are corresponding at least one receiving end, then The data packet of group service is sent to multiple red net base station respectively by red net equipment of the core network；Respectively will multiple red net base station The data packet of group service is sent at least one corresponding receiving end.Equally, in that case, when multiple blue net bases Stand and be corresponding at least one receiving end, then red net equipment of the core network the data packet of group service is sent to respectively it is multiple Indigo plant net base station；The data packet of group service is sent at least one corresponding receiving end respectively by multiple blue net base station.

In addition, there are also the distribution mode of other receiving ends, the transmission of the data packet of the distribution mode of other receiving ends Details are not described herein again for mode, and total principle is each receiving end in the corresponding cell in which base station, and red net equipment of the core network is receiving After the data of the group service sent to the first colony terminal, just which base station is the data packet of group service is sent to.

In addition, after the first colony terminal authenticates successfully, if the first cluster receiving end is the receiving end of group service, the One cluster such as carries out at the process to be paged.

After the first colony terminal authenticates successfully, if the first colony terminal is the terminal for not doing group service, the first collection Group terminal enters Idle state.

Further, during group service carries out in order to prevent, colony terminal carries out the corresponding cell of red net and indigo plant The cell switching between corresponding cell is netted, the red neighboring community for netting corresponding each cell configuration does not include blue net in the present embodiment The neighboring community of corresponding each cell, the corresponding each cell configuration of indigo plant net does not include the corresponding each cell of red net.

In the present embodiment, when the access net of red net breaks down, failure accesses colony terminal off the net and can be resident to indigo plant The transmitting-receiving that corresponding cell continues group service is netted, and blue net base station is configured with RAN Sharing characteristic, nets base station in indigo plant When corresponding originating end initiates group service, indigo plant net base station can be established according to RRC connection and complete according to RAN Sharing characteristic The PLMN of the red net carried in message is identified, and determines that the equipment of the core network for being used for transmission group service is red net equipment of the core network, The normal transmission that ensure that group service improves the reliability of group service transmission.

The transmission method of the rail traffic group service of the present embodiment includes: that event occurs at least one access net of hot net Barrier, the first colony terminal carry out cell reselection, are resident to indigo plant and net corresponding cell；First colony terminal accesses off the net for failure Any terminal；After the first colony terminal is established and connect with the RRC of blue net base station, RRC connection setup complete message is sent extremely Indigo plant nets base station, and the PLMN mark of red net is carried in RRC connection setup complete message；It is the first colony terminal place that the indigo plant, which nets base station, The corresponding base station of serving cell；Indigo plant net base station is identified according to the PLMN of red net, determines the core net for being used for transmission group service Equipment is red net equipment of the core network；When the first colony terminal is the originating end of group service, established in the carrying of group service Later, the data packet of group service is sent to red net equipment of the core network by the first colony terminal；Red net equipment of the core network is by data Packet is sent at least one base station where each receiving end, and the data packet of group service is sent to corresponding by each base station Receiving end.The transmission method of the rail traffic group service of the present embodiment improves the reliability of group service transmission.

A upper embodiment is described in detail using specific embodiment below.

Fig. 3 is the signaling process figure two of the transmission method of rail traffic group service provided by the invention, as shown in figure 3, The method of the present embodiment may include:

Step S201, at least one access net of hot net breaks down, and the first colony terminal carries out cell reselection, is resident Corresponding cell is netted to indigo plant；First colony terminal is that failure accesses any terminal off the net；

Step S202, the first colony terminal sends radio resource control RRC connection foundation request to indigo plant and nets base station；The indigo plant net Base station is the corresponding base station of serving cell where the first colony terminal；

Step S203, request is established according to the RRC connection that originating end is sent in blue net base station, sends to the first colony terminal RRC connection configuration information；

Step S204, the first colony terminal is established according to RRC connection configuration information and is connect with the RRC of blue net base station；

Step S205, the first colony terminal sends RRC connection setup complete message to indigo plant and nets base station, and RRC connection has been established It is identified at the PLMN for carrying red net in message；

Step S206, blue net base station is identified according to the PLMN of red net, determines the equipment of the core network for being used for transmission group service For red net equipment of the core network；

When the first colony terminal is the originating end of group service, step S207~step S213 is executed.

Step S207, after the carrying of group service is established, the first colony terminal sends the data packet of group service To red net equipment of the core network；

When there is at least one receiving end in the corresponding cell in indigo plant net base station and all receiving ends it is blue net it is corresponding small Qu Zhong executes step S208~S209；Receiving end is the terminal belonged in same group with originating end；

Step S208, the data packet of group service is sent to blue net base station by red net equipment of the core network；

Step S209, the data packet of group service is sent at least one corresponding receiving end by blue net base station.

When there are exist extremely in the corresponding cell at least one receiving end and red net base station in the corresponding cell in indigo plant net base station A few receiving end, executes step S210~S213；

Step S210, the data packet of group service is sent to blue net base station by red net equipment of the core network；

Step S211, the data packet of group service is sent to red net base station by red net equipment of the core network；

Step S212, the data packet of group service is sent at least one corresponding receiving end by blue net base station；

Step S213, the data packet of group service is sent at least one corresponding receiving end by red net base station.

Specifically, when at least one access net of hot net breaks down, net is accessed for each failure, failure accesses net The first colony terminal just can not continue to access red net each of in corresponding each cell, and each first colony terminal can pass through cell weight The indigo plant net corresponding cell high to frequency point time is resident in choosing, that is, is resided in the corresponding cell of network of sub-priority frequency point.Also It is to say, after the A access net of hot net breaks down, A accesses the first colony terminal off the net just can not access a base off the net with A It is interacted between standing, at this point, each first colony terminal, which can be resident to indigo plant by cell reselection, nets corresponding cell, i.e., each first The base station b corresponding with the base station a of red net interacts in colony terminal and blue net.Blue net is covered with base station corresponding in red net Region is identical.

First colony terminal sends RRC connection and establishes request to indigo plant net base station；It is the first colony terminal that the indigo plant, which nets base station base, The corresponding base station of the serving cell at place.

Indigo plant net base station receives the RRC connection that the first colony terminal is sent and establishes request, and is sent according to the first colony terminal RRC connection establish request to the first colony terminal send RRC connection configuration information.RRC connection is established in request to carry and is used for The initial marking of first colony terminal of authentication；

First colony terminal receives RRC connection configuration information, and is established and blue net base station according to RRC connection configuration information RRC connection.

First colony terminal can by the PLMN identification list in SIB1 system message select with the first colony terminal in The mark of PLMN in the PLMN list of storage carries the mark of the PLMN of selection in RRC connection setup complete message, because It is the PLMN of red net for the PLMN in the PLMN list that is stored in the first colony terminal, therefore, in RRC connection setup complete message What is carried is the mark of the PLMN of red net.In addition, since indigo plant net base station is configured with RAN Sharing characteristic, indigo plant net base station There is the mark of the PLMN of red net in the SIB1 system message issued, also there is the mark of the blue PLMN netted.

For step S208~step S213, referring to step S105~S110 of embodiment shown in Fig. 2, total principle is Each receiving end is in the corresponding cell in which base station, data of the red net equipment of the core network in the group service for receiving originating end transmission Afterwards, just which base station is the data packet of group service is sent to.

After the first colony terminal authenticates successfully, if the first cluster receiving end is the receiving end of group service, the first collection Group such as carries out at the process to be paged.

The transmission method of the rail traffic group service of the present embodiment improves the reliability of group service transmission.

In order to use red net loaded group service as far as possible, to improve the efficiency of transmission of group service.This implementation is upper one Further improvement is made on the basis of implementation.

Fig. 4 is the signaling process figure three of the transmission method of rail traffic group service provided by the invention, as shown in figure 4, The method of the present embodiment may include:

Step S301, at least one failure access network recovery of hot net is normal and the second colony terminal belongs to recovery normally Access colony terminal off the net, the second colony terminal carries out cell reselection, is resident cell corresponding to red net；

Step S302, the second colony terminal sends RRC connection and establishes request to red net base station；The red net base station is the first collection The corresponding base station of serving cell where group terminal；

Step S303, request is established according to the RRC connection that originating end is sent in red net base station, sends to the second colony terminal RRC connection configuration information；

Step S304, the second colony terminal is established according to RRC connection configuration information and is connect with the RRC of red net base station；

Step S305, the second colony terminal sends RRC connection setup complete message to red net base station；

When the second colony terminal is the originating end of group service, step S306~step S312 is executed.

Step S306, after the carrying of group service is established, the data packet of group service is sent to red net by originating end Equipment of the core network；

When failure accesses in the corresponding cell of net full recovery and the red net base station execution there are when at least one receiving end Step S307~S308；Receiving end is the terminal belonged in same group with originating end；

Step S307, the data packet of group service is sent to the red net base station by red net equipment of the core network；

Step S308, the data packet of group service is sent at least one corresponding receiving end by the red net base station.

When there are at least one receiving end and red net bases in the failure access non-full recovery of net, the corresponding cell in indigo plant net base station There are at least one receiving ends in corresponding cell of standing, and execute step S309~S312；

Step S309, the data packet of group service is sent to the red net base station by red net equipment of the core network

Step S310, the data packet of group service is sent to blue net base station by red net equipment of the core network；

Step S311, the data packet of group service is sent at least one corresponding receiving end by the red net base station；

Step S312, the data packet of group service is sent at least one corresponding receiving end by blue net base station.

Specifically, the application scenarios of the present embodiment are that at least one failure access network recovery of red net is normal.

At least one failure access network recovery of hot net is normal and the second colony terminal belongs to the normal access net of recovery Under colony terminal, the second colony terminal carries out cell reselection, is resident to the corresponding cell of red net.

Specifically, because the priority of the frequency point of red net is higher than the priority of the frequency point of blue net, when A access network recovery is normal When, cell corresponding to red net will be resident with the second colony terminal in A access net corresponding B access net in indigo plant net, that is, is weighed Newly belong to A access and net corresponding cell, is interacted with the base station a of A access net.

It is resident in the second colony terminal to the corresponding cell of red net, the second colony terminal sends RRC connection and establishes request To red net base station；The red net base station base is the corresponding base station of serving cell where the first colony terminal.

Red net base station receives the RRC connection that the second colony terminal is sent and establishes request, and is sent according to the second colony terminal RRC connection establish request to originating end send RRC connection configuration information.RRC connection is established in request and is carried for authentication The initial marking of originating end；

Second colony terminal receives RRC connection configuration information, and is established and red net base station according to RRC connection configuration information RRC connection.

After the second colony terminal connect foundation with the RRC of the red net base station, originating end sends RRC connection foundation and completes to disappear It ceases to red net base station.

After red net base station receives RRC connection setup complete message, the authentication to the second colony terminal is carried out.

Specifically, RRC connection can be established in request and be carried after receiving RRC connection setup complete message by red net base station The initial marking of the second colony terminal be sent to red net equipment of the core network, red net equipment of the core network is according to the initial mark of originating end Knowledge is authenticated, and when authenticating successfully, is then returned to the second colony terminal and is authenticated successful message.

After the second colony terminal authenticates successfully, if the second cluster receiving end is the originating end of group service, second After colony terminal authenticates successfully, the carrying of group service is established, after the carrying of group service is established, the second colony terminal will The data packet of group service is sent to red net equipment of the core network.

For step S307~step S312, referring to step S207~S212 of embodiment shown in Fig. 3, total principle is Each receiving end is in the corresponding cell in which base station, data of the red net equipment of the core network in the group service for receiving originating end transmission Afterwards, just which base station is the data packet of group service is sent to.

After the second colony terminal in the present embodiment authenticates successfully, if the second cluster receiving end is the reception of group service End, then the first cluster such as carries out at the process to be paged.

After the second colony terminal in the present embodiment authenticates successfully, if the second colony terminal is the end for not doing group service End, then the first colony terminal enters Idle state.

The present embodiment is by the way that it is corresponding to access net with the normal failure of recovery when the failure access network recovery of red net is normal Each colony terminal under indigo plant net base station is resident cell corresponding to red net, uses red net loaded group service as far as possible, is promoted The reliability of completion efficiency and the group service transmission of group service.

Fig. 5 is the signaling process figure four of the transmission method of rail traffic group service provided by the invention, as shown in figure 5, The method of the present embodiment may include:

Step S401, when each access net of hot net works normally, third colony terminal is resident corresponding small to red net Qu Hou, third colony terminal send radio resource control RRC connection and establish request to red net base station；The red net base station is third collection The corresponding base station of serving cell where group terminal；Third colony terminal is any colony terminal in rail traffic；

Step S402, request is established according to the RRC connection that third colony terminal is sent in red net base station, sends to originating end RRC connection configuration information；The initial marking for carrying receiving end is established in request in RRC connection；

Step S403, third colony terminal is established according to RRC connection configuration information and is connect with the RRC of blue net base station；

Step S404, third colony terminal sends RRC connection setup complete message to red net base station；

Step S405, the initial marking of third colony terminal is sent to red net equipment of the core network by red net base station；

Step S406, red net equipment of the core network reflects to third colony terminal according to the initial marking of third colony terminal Power, obtains authenticating successful result；

Step S407, red net equipment of the core network sends to third colony terminal and authenticates successful message；

If third colony terminal is the originating end of group service, step S408~S410 is executed.

Step S408, after the carrying of transmission trunking business is established, third colony terminal sends out the data packet of group service It send to red net equipment of the core network；

Step S409, there are at least one receiving end in the corresponding cell in hot net base station, red net equipment of the core network will collect The data packet of group business is sent to red net base station；Receiving end is the colony terminal for belonging to same group with originating end；

Step S410, the data packet of group service is sent at least one receiving end by red net base station.

Specifically, the application scenarios of the present embodiment are that each base station of red net works normally.

When red net base station equipment works normally, the corresponding cell of the red net of colony terminal selection carry out it is resident can be used it is as follows Implementation, but be not limited to such as under type: when colony terminal first powers on, can the red net of random access or blue net, when connecing After entering red net and selecting the corresponding cell of red net resident, carried in the system message that red net base station issues based on the received The priority of the frequency point of red net is higher than the priority of blue net, continues to reside in the corresponding cell of red net；When the blue net of access and select After the corresponding cell of one indigo plant net is resident, the frequency point of the red net carried in the system message that blue net base station issues based on the received Priority is higher than the priority of blue net, carries out the gravity treatment of cell, is resident in the corresponding cell of red net.

The group service of rail traffic in the present embodiment is carried by the red net of bearing track comprehensive traffic business, Each colony terminal is opened an account on red net equipment of the core network, colony terminal be can be vehicle mounted communication terminal or hand-held station.Wherein, red Net is the technology of prior art maturation, and the present embodiment no longer elaborates.

The transmission method of the corresponding rail traffic group service of the present embodiment is the method in standard, and the present embodiment is no longer It repeats.

In addition, after third colony terminal authenticates successfully, if the first cluster receiving end is the receiving end of group service, the One cluster such as carries out at the process to be paged.

After third colony terminal authenticates successfully, if the first colony terminal is the terminal for not doing group service, the first collection Group terminal enters Idle state.

The present embodiment by each base station of red net work normally when, using red net loaded group service, only in red net When netting there are failure access, be possible to improve the completion efficiency and cluster industry of group service by blue net loaded business The reliability of business.

Fig. 6 is the structural schematic diagram of base station embodiment one provided by the invention, as shown in fig. 6, the device of the present embodiment can To comprise determining that module 11, receiving module 12 and sending module 13；

The indigo plant of red net and carrying based on Train Control CBTC business that group service passes through bearing track comprehensive traffic business Net is carried, and the priority of the frequency point of red net is higher than the priority of the frequency point of blue net, and each colony terminal is opened an account in red net core In net equipment.

Determining module 11, at least one access net for hot net break down, and the first colony terminal is resident to blue net It is red according to being carried in the radio resource control RRC connection setup complete message of the first colony terminal transmission after corresponding cell The public land mobile network PLMN of net is identified, and determines that the equipment of the core network for being used for transmission group service is that red net core net is set It is standby；First colony terminal is corresponding with base station and is that failure accesses colony terminal off the net；

Receiving module 12, for group service to need to transmit and there are at least one receptions in the corresponding cell in base station when having End receives the data packet for the group service that red net equipment of the core network is sent after the carrying of group service is established.

Sending module 13, for sending data packet at least one corresponding receiving end.

Receiving module 12 is also used to, and is carried in the RRC connection setup complete message sent according to the first colony terminal The PLMN of red net is identified, and before determining that the equipment of the core network for being used for transmission group service is red net equipment of the core network, receives first Request is established in the RRC connection that colony terminal is sent；The initial marking in request including originating end is established in RRC connection；

Sending module 13, which is also used to establish request according to RRC connection, sends RRC connection configuration information to originating end, so that the One colony terminal is set up to be connect with the RRC of blue net base station；

Sending module 13 is also used to, and is carried in the RRC connection setup complete message sent according to the first colony terminal The PLMN of red net is identified, and determination is used for transmission the equipment of the core network of group service will initially to mark after red net equipment of the core network Knowledge is sent to red net equipment of the core network, so that red net equipment of the core network is authenticating successfully the first colony terminal according to initial marking Afterwards, authentication successful message is sent to the first colony terminal.

The device of the present embodiment can be used for executing the technical solution of above method embodiment, realization principle and technology Effect is similar, and details are not described herein again.

Fig. 7 provides the structural schematic diagram of colony terminal embodiment one for the present invention, as shown in fig. 7, the device of the present embodiment It may include: cell reselection module 21 and sending module 22.

The indigo plant of red net and carrying based on Train Control CBTC business that group service passes through bearing track comprehensive traffic business Net is carried, and the priority of the frequency point of red net is higher than the priority of the frequency point of blue net, and colony terminal is opened an account in red net core net In equipment, when colony terminal is that at least one access net of hot net breaks down, failure accesses colony terminal off the net.

Cell reselection module 21 is resident to indigo plant for carrying out cell reselection and nets corresponding cell；

Sending module 22, for sending radio resource control RRC connection setup complete message to corresponding blue net base station, The mark of the PLMN of red net is carried in RRC connection setup complete message, so that mark of the blue net base station according to PLMN, determination are used for The equipment of the core network of transmission trunking business is red net equipment of the core network；

Sending module 22 is also used to establish it in the carrying of group service when the originating end that colony terminal is group service Afterwards, the data packet of signalling of bouquet business is to red net equipment of the core network, so that red net equipment of the core network sends data packets to blue net Behind base station and/or red net base station, indigo plant net base station and/or red net base station deliver a packet to respectively it is corresponding at least one Receiving end, receiving end are the terminal for belonging to same group with originating end.

In at least one failure access network recovery of red net, normal and colony terminal is that failure access is netted in corresponding cell Colony terminal when, cell reselection module 21 is also used to carry out cell reselection, is resident to the corresponding cell of red net.

Fig. 8 is the structural schematic diagram of colony terminal embodiment two provided by the invention, as shown in figure 8, the dress of the present embodiment It can also include: receiving module 23 and RRC connection establishment module further on the basis of setting apparatus structure shown in Fig. 7 24；

Sending module 22 is also used to, and before sending RRC connection setup complete message to corresponding blue net base station, sends RRC Connection establishes request to indigo plant and nets base station；The initial marking in request including colony terminal is established in RRC connection；Receiving module 23 is used In request transmission RRC connection configuration information is established according to RRC connection in the blue net base station of reception；

RRC connection establishment module 24 is used to be set up according to RRC connection configuration information to be connect with the RRC of blue net base station.

Receiving module 23 is also used to, and after sending RRC connection setup complete message to indigo plant net base station, receives red net core The authentication successful message that net equipment is sent according to initial marking.

Fig. 9 is the structural schematic diagram of the Transmission system embodiment of rail traffic group service provided by the invention, such as Fig. 9 institute Show, the system of the present embodiment includes: multiple base stations 33 and multiple colony terminals 34, wherein base station 33 can be real using Fig. 6 device The structure of example is applied, the structure of Fig. 7 or Fig. 8 any device embodiment can be used in colony terminal 34.

Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or The various media that can store program code such as person's CD.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims

1. a kind of transmission method of rail traffic group service, which is characterized in that group service passes through bearing track comprehensive traffic The blue net of red net and carrying based on Train Control CBTC business of business is carried, and the priority of the frequency point of the red net is higher than The priority of the frequency point of the blue net, each colony terminal are opened an account on red net equipment of the core network, which comprises

When at least one access net of the red net breaks down, the first colony terminal, which is resident to the indigo plant, nets corresponding cell Afterwards, the radio resource control RRC that blue net base station corresponding with first colony terminal is sent according to first colony terminal The public land mobile network PLMN of the red net carried in connection setup complete message is identified, and determination is used for transmission cluster industry The equipment of the core network of business is the red net equipment of the core network；First colony terminal accesses off the net for the failure of the red net Any terminal；

When there are at least one in the colony terminal for having group service that the corresponding cell of transmission and the blue net base station is needed to include Receiving end, then after the carrying of the group service is established, the blue net base station receives the red net equipment of the core network and sends The group service data packet；

2. the method according to claim 1, wherein netting what base station was sent according to the first colony terminal in the indigo plant The PLMN of the red net carried in RRC connection setup complete message is identified, and determines that the core net for being used for transmission group service is set Before being the red net equipment of the core network, the method also includes:

The blue net base station receives the RRC connection that first colony terminal is sent and establishes request；RRC connection is established in request and is wrapped Include the initial marking of first colony terminal；

The blue net base station establishes request according to the RRC connection and sends RRC connection configuration information to first colony terminal, It is connect so that first colony terminal is set up with the RRC of the blue net base station；

Correspondingly, the institute carried in the RRC connection setup complete message that the blue net base station is sent according to the first colony terminal The PLMN mark of red net is stated, determination is used for transmission the equipment of the core network of group service to go back after the red net equipment of the core network Include:

The initial marking is sent to the red net equipment of the core network by the blue net base station, so that the red net equipment of the core network After being authenticated successfully according to the initial marking to first colony terminal, the transmission of the first colony terminal of Xiang Suoshu is authenticated successfully Message.

3. the method according to claim 1, wherein the neighboring community of the corresponding each cell configuration of the red net is not Corresponding each cell is netted including the indigo plant, the blue neighboring community for netting corresponding each cell configuration does not include the red net correspondence Each cell.

4. a kind of transmission method of rail traffic group service, which is characterized in that group service passes through bearing track comprehensive traffic The blue net of red net and carrying based on Train Control CBTC business of business is carried, and the priority of the frequency point of the red net is higher than The priority of the frequency point of the blue net, each colony terminal are opened an account on red net equipment of the core network, comprising:

When at least one access net of the red net breaks down, the first colony terminal carries out cell reselection, is resident to blue net pair The cell answered, first colony terminal are that failure accesses any terminal off the net；

First colony terminal sends radio resource control RRC connection setup complete message to corresponding blue net base station, and the RRC connects The mark for establishing the PLMN for completing to carry the red net in message is connect, so that mark of the blue net base station according to the PLMN, Determine that the equipment of the core network for being used for transmission group service is the red net equipment of the core network；

When the originating end that first colony terminal is group service, after the carrying of the group service is established, described the One colony terminal sends the data packet of the group service to the red net equipment of the core network, so that the red net equipment of the core network After the data packet is sent to the blue net base station and/or red net base station, the blue net base station and/or red net base station respectively will The data packet is sent at least one corresponding receiving end, and the receiving end is to belong to same group with the originating end Terminal.

5. according to the method described in claim 4, it is characterized in that, being sent out in first colony terminal to corresponding blue net base station Before sending radio resource control RRC connection setup complete message, further includes:

First colony terminal sends RRC connection and establishes request to the blue net base station；It includes institute in request that RRC connection, which is established, State the initial marking of originating end；

First colony terminal receives the blue net base station and is configured according to the RRC connection that request transmission is established in the RRC connection Information, and set up according to the RRC connection configuration information and connect with the RRC of the blue net base station；

Correspondingly, radio resource control RRC connection foundation is sent to corresponding blue net base station in first colony terminal to complete After message, further includes:

First colony terminal receives the authentication successful message that the red net equipment of the core network is sent according to the initial marking.

6. according to the method described in claim 4, it is characterized by further comprising:

When at least one failure access network recovery of the red net is normal and the second colony terminal belongs to the normal access net of recovery Under colony terminal when, second colony terminal carries out cell reselection, is resident cell corresponding to the red net；

When the originating end that second colony terminal is group service, after the carrying of the group service is established, described second Colony terminal sends the data packet of the group service to the red net equipment of the core network, so that the red net equipment of the core network is logical It crosses the red net base station and/or blue net base station and the data packet is sent at least one corresponding receiving end, institute respectively Stating originating end is the terminal belonged in same group with the receiving end.

7. according to the method described in claim 4, it is characterized in that, the neighboring community of the corresponding each cell configuration of the red net not Corresponding each cell is netted including the indigo plant, the blue neighboring community for netting corresponding each cell configuration does not include the red net correspondence Each cell.

8. a kind of base station, which is characterized in that group service is by the red net and carrying of bearing track comprehensive traffic business based on column The blue net of vehicle control CBTC business is carried, and the priority of the frequency point of the red net is higher than the preferential of the frequency point of the blue net Grade, each colony terminal are opened an account on the red net equipment of the core network, and the base station includes:

Determining module breaks down at least one access net when the red net, and the first colony terminal is resident to the indigo plant After netting corresponding cell, taken according in the radio resource control RRC connection setup complete message of first colony terminal transmission The public land mobile network PLMN of the red net of band is identified, and determines that it is described for being used for transmission the equipment of the core network of group service Red net equipment of the core network；First colony terminal is corresponding with the base station and is that failure accesses colony terminal off the net；

Receiving module, for group service to need to transmit and there are at least one receptions in the corresponding cell in the base station when having End receives the number for the group service that the red net equipment of the core network is sent after the carrying of the group service is established According to packet；

9. a kind of colony terminal, which is characterized in that the red net and carrying base that group service passes through bearing track comprehensive traffic business It is carried in the blue net of Train Control CBTC business, the priority of the frequency point of the red net is higher than the excellent of the frequency point of the blue net First grade, colony terminal are opened an account on red net equipment of the core network, and the colony terminal is at least one access net when the red net When breaking down, failure accesses colony terminal off the net, comprising:

Sending module, for sending radio resource control RRC connection setup complete message, the RRC to corresponding blue net base station The mark of the PLMN of the red net is carried in connection setup complete message, so that mark of the blue net base station according to the PLMN Know, determines that the equipment of the core network for being used for transmission group service is the red net equipment of the core network；

The sending module is also used to when the originating end that the colony terminal is group service, in the carrying of the group service After foundation, the data packet of the group service is sent to the red net equipment of the core network, so that the red net equipment of the core network After the data packet is sent to the blue net base station and/or red net base station, the blue net base station and/or red net base station respectively will The data packet is sent at least one corresponding receiving end, and the receiving end is to belong to same group with the originating end Terminal.

10. a kind of system, which is characterized in that including base station according to any one of claims 8 and colony terminal as claimed in claim 9.