CN102158918B - Trans-cell switching method and system for communication network - Google Patents

Abstract

The invention discloses a trans-cell switching method and system for a communication network, and the method comprises: user equipment (UE) acquires information of the current service cell and adjacent cells, and switches based on a preset rule. According to the technical scheme provided by the invention, different switching methods are put forward for various types of service cells and adjacent cells, thus realizing uninterrupted service in switching.

Description

Communication network cross district switching method and system

Technical field

The present invention relates to communication technical field, particularly communication network cross district switching method and system.

Background technology

In current mobile communication system, except the unicast service of point-to-point, also have point-to-multipoint multicast service, so that being provided, abundant user experiences.In the evolution of mobile communication system, for coverage and the quality that improves multicast service, gradually by MBMS (Multimedia Broadcast Multicast Service, multimedia broadcast multi-broadcasting business) evolve to MBSFN (MBMSover a Single Frequency Network, broadcast/group broadcast Single Frequency Network).MBSFN refers to that a plurality of base stations that belong to a cluster (cluster) send identical content at synchronization, thereby the technology of larger diversity gain and larger coverage is provided.

In existing 3GPP standard, UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system) adopts FDD (Frequency Division Duplex, the Frequency Division Duplexing (FDD)) frequency of up-downgoing symmetry.Do not need up transmission frequency owing in the MBSFN cluster, only having descending transmission, caused the waste to the frequency resource.Therefore introduced MBSFN IMB (Integrated Mobile Broadcast, comprehensive mobile broadcast) characteristic.MBSFN IMB is on the basis of MBSFN technology, and descending transmission carrier frequency adopts the technology of 3.84Mcps TDD (Time Division Duplex, time division duplex) frequency, and it is that asymmetrical characteristic has been saved up transmitting carrier frequency that this technology is utilized the TDD frequency.MBSFN IMB compares with MBSFN, only has the difference of carrier frequency, and the change of the physical layer frame structure brought due to the difference of carrier frequency, and key technology and MBSFN are basic identical.

Support the UE (User Equipment, subscriber equipment) of MBSFN or MBSFN IMB, there is the double reception antenna.In the UMTS system, wherein, the antenna of UE is for receiving the business that FDD clean culture community provides, and UE can be in idle (idle), URA_PCH, CELL_PCH, the states such as CELL_FACH and CELL_DCH; Another antenna of UE is for receiving the business that the MBSFN community provides.

In actual arranging net, consider that the MBSFN community expense of arranging net is higher, therefore general only can be in hot spot region or city arrange net, carry out the clean culture community arranges net in other zones, when being moved to the unicast mode community by the MBSFN community as UE like this or being moved to the MBSFN community by the unicast mode community, easily cause service disconnection.

Summary of the invention

An aspect of of the present present invention, proposed a kind of cross district switching method of communication network, and comprising: subscriber equipment obtains current service cell and adjacent cell information, and is switched according to preset rules.

Another aspect of the present invention, a kind of communication network Handover system has also been proposed, comprise subscriber equipment, described subscriber equipment obtains the information of current service cell and neighbor cell, and according to the ability information of described Serving cell and neighbor cell and the broadcasting/packet service provided, and measure the judgement that defined preset rules is switched.

By above-mentioned technical scheme, can improve the continuity of business, guarantee quality of service.

The accompanying drawing explanation

The structural representation of a kind of UTRAN that Fig. 1 is one embodiment of the invention;

The flow chart of the broadcasting/multicasting method of the radio network controller that Fig. 2 is another embodiment of the present invention;

The flow chart of the broadcasting/multicasting method of the radio network controller that Fig. 3 is another embodiment of the present invention;

The structural representation of the radio network controller that Fig. 4 is another embodiment of the present invention;

The structural representation of the radio network controller that Fig. 5 is another embodiment of the present invention;

The flow chart that Fig. 6 is another embodiment of the present invention;

The flow chart that Fig. 7 is another embodiment of the present invention;

Fig. 8 is the flow chart that radio network controller in another embodiment of the present invention and core net are carried out the foundation of MBMS business;

Fig. 9 is radio network controller in another embodiment of the present invention and the core net flow chart while connecting;

Figure 10 is that subscriber equipment and the radio network controller in another embodiment of the present invention set up the flow chart of carrying;

Figure 11 is the flow chart of another embodiment of the present invention Zhong FDD community to the switching of IMB community;

Figure 12 is the flow chart of another embodiment of the present invention Zhong IMB community to the switching of FDD community.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.

Below with concrete example, the embodiment of the present invention is specifically described.

As shown in Figure 1, be the structural representation of a kind of UTRAN of one embodiment of the invention, UTRAN is land radio access web, it comprises one or several RNS (RNS, Radio Network Subsystem).A RNS comprises a radio network controller (RNC, Radio Network Controller) and one or more base station (NodeB).Interface between RNC and core net (Core Network, CN) is the Iu interface, and NodeB is connected by Iub interface with RNC.In UTRAN inside, interconnected by Iur between RNC, Iur can connect or connect by transmission network by the direct physical between RNC.RNC is used for distributing and controls and is attached thereto or the Radio Resource of relevant NodeB.NodeB completes the conversion of the data flow between Iub interface and Uu interface, also participates in a part of RRM simultaneously.

NodeB is the base station (being radio receiving-transmitting unit) of WCDMA system, comprises radio receiving-transmitting unit and Base-Band Processing parts.Mainly complete the processing of Uu interface physical layer protocol.Its major function is spread spectrum, modulation, chnnel coding and despreading, demodulation, channel-decoding, also comprises the functions such as mutual conversion of baseband signal and radiofrequency signal.RNC, for controlling the Radio Resource of UTRAN, mainly completes the functions such as connection foundation and disconnection, switching, the merging of grand diversity, RRM control.

One embodiment of the invention has proposed the broadcasting/multicasting method of the radio network controller of a kind of unicast transmission mode community, comprises as shown in Figure 1 following content.

21, RNC and CN set up the Iu port carrying for the MBMS business.

For example, before the MBMS business or while being about to start, RNC and CN set up the Iu port carrying for the MBMS business.

22, the request to this MBMS business according to UE, set up the air interface carrying with this UE.

The method of the embodiment of the present invention makes Access Network can have the function of the broadcasting/packet service data that receive core net, and can connect with core net and UE.

Another embodiment of the present invention has proposed the broadcasting/multicasting method of the radio network controller of a kind of unicast transmission mode community, as shown in Figure 3, comprises following content.

31, RNC receives the MBMS service request that CN initiates, and responds this MBMS service request, sets up context corresponding to this MBMS business, for example broadcasts packet data context (Broadcast PDP context).

32, this RNC and CN set up the Iu port carrying for this MBMS business.Certainly the present invention, not as limit, can also set up the carrying of Iu port by other means.

33, this RNC judges current this MBMS business of UE request receiving that whether has; If this MBMS business of UE request receiving is arranged, between this RNC and this CN, set up user's carrying and signaling bear; If there is no this MBMS business of UE request receiving, between Access Network and CN, set up signaling bear.

34, the request to this MBMS business according to UE, set up the air interface carrying with this UE.

Particularly, as shown in Figure 8, RNC can resolve the task requests (for example, broadcast/multicast session request MBMS Session Start) of the initiation of CN initiation, and responds this request.Same, also can resolve task ending request (for example, broadcast group broadcast conversation end message MBMS Session Stop).Like this, RNC can and CN between set up the Iu port carrying for the broadcast mode of MBMS business.RNC can only set up the Iu signaling and connect, and does not set up the user plane carrying.When there being UE to activate this business, and set up again the user plane carrying during request receiving.Above-mentioned Broadcast PDP context comprises following information in RNC:

Multicast/broadcast mode (Multicast/broadcast mode): MBMS bearer types (being now broadcast mode Broadcastmode);

Interim mobile group number (TMGI): the service identification that certain broadcast/group broadcast bearer service (MBMS Bearer Service) is corresponding;

State: the state of loading end resource (standby or active);

Service quality (Qos): the service quality that the MBMS bearer service is corresponding;

Broadcast/multicast service zone (MBMS Service Area): MBMS bearer service distributed areas.

List of PMM-CONNECTED UEs: activated the list of the PMM-CONNECTED UE of MBMS business.

In order to make UE can know that this community is the unicast transmission mode community, the business continuance while supporting to be switched by the IMB community, can issue this notice by RNC.The broadcasting/multicasting method of the radio network controller of above-mentioned unicast transmission mode community can also comprise: this RNC broadcast system broadcast, so that UE is known this unicast transmission mode community, and guaranteeing business continuity while supporting to be switched by the IMB community.This process can be arranged in any time slot of said method, and can repeatedly be broadcasted.

Another embodiment of the present invention has proposed a kind of radio network controller RNC, is arranged at Access Network, and this radio network controller structure as shown in Figure 4, comprising: core net linkage unit 41 and UE linkage unit 42.

Above-mentioned core net linkage unit 41, for setting up the Iu port carrying for the MBMS business with CN.For example, when the MBMS business starts, with CN, set up the Iu port carrying for the MBMS business.Above-mentioned UE linkage unit 42, for this UE, setting up the air interface carrying, so that this UE receives this business from Access Network.

Adopt the radio network controller of this structure, make Access Network can there is the function that receives the broadcasting/packet service data, and connect with core net and UE.

Another embodiment of the present invention has proposed a kind of radio network controller RNC, is arranged at Access Network, and this RNC as shown in Figure 4, comprising: core net linkage unit 51 and subscriber equipment linkage unit 52.

Above-mentioned core net linkage unit 51, for setting up the Iu port carrying for business with CN.For example, when the MBMS business starts, with CN, set up the Iu port carrying for the MBMS business.Above-mentioned subscriber equipment linkage unit 52, for this UE, setting up the air interface carrying, so that this UE receives this business from Access Network.

Wherein, core net linkage unit 51 further comprises: response subelement 511, connexon unit 512 and judgment sub-unit 513.

Above-mentioned response subelement 511, the MBMS business of initiating for receiving this CN, and respond this service request, and set up context corresponding to this business, for example: Broadcast PDP context, specifying information in this Broadcast PDP context is the content in embodiment as shown in Figure 3, repeats no more herein.Above-mentioned connexon unit 512, for setting up the Iu port carrying for this business with CN.Above-mentioned judgment sub-unit 513, for judging current this MBMS business of UE request receiving that whether has; If this business of UE request receiving is arranged, between this Access Network and this CN, set up user's carrying and signaling bear; If there is no this business of UE request receiving, between this Access Network and this CN, set up signaling bear.

RNC can resolve the initiation MBMS conversation request message (for example MBMS Session Start) that CN initiates, and responds this request.Same, also can resolve MBMS conversation end message (for example MBMS Session Stop).Like this, RNC can and CN between set up the Iu port carrying for the broadcast mode of MBMS business.RNC can only set up the Iu signaling and connect, and does not set up the user plane carrying.When there being UE to activate this business, and set up again the user plane carrying during request receiving.

Can know that in order to make UE this community is the unicast transmission mode community, when being switched by IMB, support guarantees the ability of business continuance, can issue a notice by radio network controller, notice UEGai community is the unicast transmission mode community, and RNC issues the mode of this notice can be as described below.

Above-mentioned RNC comprises the system broadcast message unit, for broadcast when this unicast transmission mode community is supported to be switched by IMB the ability that guarantees business continuance to this UE.Described radio network controller can also comprise message sending unit, by broadcast/group broadcast Single Frequency Network cell notification indicating channel, or transmission broadcast/group broadcast Single Frequency Network cell downlink chain of command information channel, send to UE the message that broadcast/group broadcast is supported in this unicast transmission mode community.

Guarantee the ability of business continuance when above-mentioned support is switched by IMB " refer to that this RNC can be broadcasted to UE, so that knowing this community, UE can complete the method for the embodiment of the present invention.

Another embodiment of the present invention has proposed a kind of communication network cross district switching method, comprising: UE reads the information of current service cell and neighbor cell, and is switched according to preset rules.Wherein, the embodiment of the present invention can, according to the type of different Serving cell and neighbor cell, be preset respectively different rules.For example, for different situations, described communication network cross district switching method can be as described below.

When switch to the IMB community non-IMB community, its flow process as shown in Figure 6.

When 601, UE receives business in non-IMB, this UE is by MBMS Single Frequency Network list of frequency or the MBMS Single Frequency Network Neighboring Cell List of unicast transmission mode community, know that neighbor cell comprises MBMS Single Frequency Network community, and the parameter of the cell frequency information of described neighbor cell and/or MBMS Single Frequency Network cell measurement.

If 602 when the business of this MBMS Single Frequency Network community identical with current unicast transmission mode Zone, and service quality meets pre-conditioned, this UE is switched to this MBMS Single Frequency Network community and receives this business, and the carrying of this unicast transmission mode community is discharged.

In another embodiment of the present invention, the UE in 601 knows that neighbor cell comprises that the method for broadcast/group broadcast Single Frequency Network community can be as described below.

The broadcast/group broadcast Single Frequency Network list of frequency issued by the unicast transmission mode community at UE or broadcast/group broadcast Single Frequency Network Neighboring Cell List, know that neighbor cell comprises broadcast/group broadcast Single Frequency Network community, and the cell frequency information of described neighbor cell and the threshold value of community selection and/or the parameter of broadcast/group broadcast Single Frequency Network cell measurement.

Above-mentioned broadcast/group broadcast Single Frequency Network list of frequency or broadcast/group broadcast Single Frequency Network Neighboring Cell List can be included in: in the system broadcast message of unicast transmission mode community or in the measurement control message or in the hand off signaling of unicast transmission mode community.The hand off signaling of this unicast transmission mode community comprises: radio bearer is set up signaling (as RADIO BEARER SETUP), or radio bearer is reshuffled signaling (as RADIO BEARER RECONFIGURATION), or radio bearer release signaling (as RADIOBEARER RELEASE), or transmission channel is reshuffled signaling (as TRANSPORT CHANNELRECONFIGURATION), or physical channel is reshuffled the signaling that signaling (as PHYSICAL CHANNELRECONFIGURATION) etc. can complete handoff functionality.

In another embodiment of the present invention, the parameter that the UEDui IMB community in 601 is measured also can be obtained the mode that adjacent area is the IMB community and obtains by above; Also can the Adoption Network side and the predefined mode of UE obtain.

In another embodiment of the present invention, the parameter of above-mentioned broadcast/group broadcast Single Frequency Network cell measurement comprises one of following information or combination: measure threshold value, measuring amount,, metering system, report criterion.

In another embodiment of the present invention, the carrying of described unicast transmission mode community is discharged in 601 can be as described below.

UE sends release message, comprises sign and/or the service identification of carrying release cause and/or carrying in described release message.The business release message that above-mentioned bearer messages is Non-Access Stratum or up RRC (Radio Resource Control, Radio Resource is controlled) signaling.Wherein, the RRC signaling comprises: cell update signaling (as cell update), broadcast group broadcast correction request (as MBMS Modification Request), measurement report (as Measurement Reprot) or more than mention the up signaling that various switchings are relevant, request is initiated carrying and is discharged.Can certainly for example, for radio bearer discharges indication (Radio BearerRelease Indicator), the embodiment of the present invention is not as limit.

While switching to the non-IMB community in another embodiment of the present invention Zhong， IMB community, as shown in Figure 6, a kind of communication network cross district switching method can be as described below.

When 701, UE receives business in MBMS Single Frequency Network community, pre-conditioned if the service quality of business does not meet, this UE is measured the neighbor cell of this MBMS Single Frequency Network community.

If there is no MBMS Single Frequency Network community in 702 these neighbor cells, and comprise the unicast transmission mode community, and this UE obtains this neighbor cell and has the ability that keeps business continuance while switching in MBMS Single Frequency Network community from the system broadcast message of above-mentioned neighbor cell, and obtain the business that this UE is receiving, enter 703, otherwise finish.

703, this UE is switched to above-mentioned unicast transmission mode community.

In another embodiment of the present invention, UE is switched to this unicast transmission mode community, and UE is switched to described unicast transmission mode community can be as described below.

7031, judge between the Access Network of unicast transmission mode community and CN the Iu port carrying whether existed for the broadcast mode of business, if do not have, set up the Iu port carrying for the broadcast mode of business, if having, utilize this Iu port carrying.

7032,, after UE obtains the business of described unicast transmission mode community, for business and Access Network, set up the air interface carrying; This UE and described Access Network are set up described air interface carrying by dedicated data channel or high speed shared data channel; Its process of setting up carrying can be as shown in figure 10.

7033, this UE receives above-mentioned business from Access Network.

Wherein, above-mentioned 7031～7033rd, when a kind of UE that the embodiment of the present invention proposes is switched to the unicast transmission mode community, be linked into the method for unicast transmission mode community.Certainly the above embodiments of the present invention are an application of the method.The method can be initiated separately a method of business as UE FDD community.

In another embodiment of the present invention, the foundation in 7031 for the Iu port carrying of the broadcast mode of business can be specifically as shown in Figure 9, mainly as described below.

70311, CN initiates task requests to Access Network, and described Access Network responds described initiating business request, and sets up context corresponding to described business, for example Broadcast PDP context; The flow process of setting up Broadcast PDP context can be as shown in Figure 8.

70312, Access Network and CN set up the Iu port carrying for described business.

70313, Access Network judges the current described business of UE request receiving that whether has; If the described business of UE request receiving is arranged, between above-mentioned Access Network and CN, set up user's carrying and signaling bear; If there is no the described business of UE request receiving, between described Access Network and described CN, can only set up signaling bear.

In another embodiment of the present invention, above-mentioned Access Network can complete in CN and set up the carrying of Iu port, with UE, sets up the air interface carrying by RNC.And judged whether that UE asks this business, also can be completed by this RNC.

In another embodiment of the present invention, except having judged whether the UE requested service, can also, according to reasons such as whether current resource meet, judge whether to set up user's carrying.

In another embodiment of the present invention, obtain neighbor cell in 702 and whether there is the business that current UE is receiving, can be specially: UE receives the service lists of described neighbor cell, knows the business of neighbor cell, and compares with current business; Or UE by current business, whether by the inquiry signaling, to send to Serving cell identical with this business with the business of determining neighbor cell.

In another embodiment of the present invention, UE sends to business whether with this business identical comprise of Serving cell to determine neighbor cell: UE by current business by the inquiry signaling and sends the inquiry signaling, and this inquiry signaling comprises the information of described business; After Serving cell receives this inquiry signaling, with the service lists of described above-mentioned neighbor cell, contrasted.

In another embodiment of the present invention, the service lists that above-mentioned UE receives described neighbor cell comprises: Access Network is handed down to UE by service lists; Or UE is by obtaining service lists with the BM-SC direct interaction; Or UE is by cell update information or the list of URA lastest imformation issuing service; Or UE reads the service lists of the described unicast transmission mode community of pre-stored; Or UE issues the list of the described Access Network issuing service of request triggering by sending service lists.More specifically, comprising:

Access Network is handed down to UE by system broadcast message/beep-page message by service lists;

Or UE obtains service lists by setting up point-to-point carrying and BM-SC direct interaction;

Or network side is according to user's ability information, issuing service list in cell update information or URA lastest imformation;

Or UE is by the service lists of the described unicast transmission mode community of the pre-stored that reads in the IMB community and receive;

Or UE triggers the list of described Access Network issuing service by sending request.

The mode that UE sends request comprises:

UE can connect the request that request (for example RRC connection request) message initiates to trigger the list of Access Network issuing service of setting up by RRC;

UE can pass through the request that cell update/URA area update (for example cell update/URA update) message initiates to trigger the list of Access Network issuing service;

UE can set up/reshuffle by radio bearer for example, in (Radio Bearer setup/Reconfiguration) process triggering Access Network issuing service list;

UE can measure the request that control message initiates to trigger the list of Access Network issuing service by measurement report;

UE can revise the request that request (MBMS Modification Request) message initiates to trigger the list of Access Network issuing service by MBMS;

UE can pass through newly-increased up signaling, as: radio bearer discharges the request that the list of triggering Access Network issuing service is initiated in indication (Radio Bearer Release Indicator); The title of newly-increased up signaling is not limited to this.

All comprise signaling in above all message and initiate reason, issue for the requested service list.

The service lists that UE obtains current area is for switching that can be correct, so UE also can initiate the service inquiry signaling except the list of trigger network side issuing service, in above all message, comprises service identification, for identifying the business that will inquire about; And/or signaling initiation reason, for service inquiry.

Support the UE of IMB to have at least two antennas, this first antenna is for connecting broadcast/group broadcast Single Frequency Network community; This second antenna is for connecting the FDD community; Therefore when switch the IMBXiang of the first antenna FDD community, can judge whether to affect according to predefined rule switching or the community selection/reselection flow process of the second antenna.

If, when being redefined for this switching and the switching of the second antenna or community selection/reselection flow process not impacted, can just adopt above-mentioned method.

If when being redefined for this switching the switching of the second antenna or community selection/reselection flow process being impacted, when the second antenna handed over service community of described UE, when whether Target cell is supported to switch, can keep business continuance as one of condition of switching, the community that preferential selection is identical with the business of the Serving cell of described the first antenna.Concrete grammar can be as described below.

For the selection/reselection process, in adjacent area, meet on the basis of S and R criterion, the preferential selection of UE can support UE receiving the community of business, and may not be the best community of sequence; When perhaps UE is for support and IMB switching, keep the community of business continuance to increase bias in the parameter of calculating S and/or R criterion, make UE can preferentially choose this community.Above-mentioned S criterion and R criterion can be stipulated with reference to the 3GPP agreement.

For handoff procedure, the UE reporting measurement is as a result the time, and the ability information that comprises UE and/or expectation continue the sign of reception business, and RNC is when the select target community, and preferential selection can maintain the community of business.

In technique scheme, UE is switched to this unicast transmission mode community, if this unicast transmission mode community adopts is the RNC that supports the MBMS business, and MBMS broadcasting service corresponding to this RNC is similar with the send mode of IMB business.While adopting this RNC, Access Network can make UE can know this adjacent non-IMB community support unicast transmission mode in the following manner.

This UE is according to the broadcast/group broadcast Single Frequency Network cell notification indicating channel of this Access Network, or transmission broadcast/group broadcast Single Frequency Network cell downlink chain of command information channel, know this unicast transmission mode community support broadcast/group broadcast, UE also can be by the broadcasting/packet service information of supporting with upper type or unicast transmission mode community.。

In such scheme, the service quality of the business in current Serving cell (IMB community) does not meet pre-conditioned, can current service quality and the threshold value of obtaining be compared to determine by UE.UE obtains above-mentioned threshold value by the broadcast that receives the IMB community, for example by receiving SIB (System Information Block, system information block) 3 or SIB11, obtains.

When switch to the IMB community IMB community, a kind of communication network cross district switching method can be as described below.

When UE receives business in broadcast/group broadcast Single Frequency Network community, pre-conditioned if the service quality of described business does not meet, UE is measured the neighbor cell of described broadcast/group broadcast Single Frequency Network community; Perhaps

If described neighbor cell is broadcast/group broadcast Single Frequency Network community, and can send the business that current UE is receiving, and while meeting service quality, described UE is switched to described neighbor cell.

In another embodiment of the present invention, UE knows that neighbor cell has the method for broadcast/group broadcast Single Frequency Network community to be specially: receive threshold and the measurement parameter of the neighbor cell that UE issues by current broadcast/group broadcast Single Frequency Network community judge whether the service quality of neighbor cell meets pre-conditioned.

In another embodiment of the present invention, this communication network cross district switching method also comprises:

The broadcast/group broadcast Single Frequency Network list of frequency of the neighbor cell that UE issues by current broadcast/group broadcast Single Frequency Network community or broadcast/group broadcast Single Frequency Network Neighboring Cell List, know adjacent broadcast/group broadcast Single Frequency Network cell information;

Receive threshold and the measurement parameter of the neighbor cell that UE issues by current broadcast/group broadcast Single Frequency Network community, judge whether the service quality of neighbor cell meets pre-conditioned.

In another embodiment of the present invention, it is pre-conditioned whether the service quality of the business in current Serving cell (IMB community) meets, and can current service quality and the threshold value of obtaining be compared to determine by UE.UE obtains above-mentioned threshold value by the broadcast that receives the IMB community, for example, by receiving SIB (System Information Block, system information block) 3 or SIB 11 acquisitions.

Another embodiment of the present invention has proposed a kind of system of communication network Handover, comprise UE, described UE obtains the information of current service cell and neighbor cell, and according to the ability information of described Serving cell and neighbor cell, the business provided and being switched according to measuring defined preset rules.

Wherein, the embodiment of the present invention can, according to different Serving cells and neighbor cell type, be preset respectively different rules.

When switch to the IMB community non-IMB community, UE comprises: the first state read module, the first control module and the first handover module.

The first state read module, for reading current service cell and neighbor cell, if current service cell is the unicast transmission mode community, and described neighbor cell comprises broadcast/group broadcast Single Frequency Network community, measure measurement threshold value measuring amount and/or the metering system of described broadcast/group broadcast Single Frequency Network community and/or report criterion.

The first control module, for reading business and the service quality of the described broadcast/group broadcast Single Frequency Network community that described the first state read module obtains, when the business of described broadcast/group broadcast Single Frequency Network community identical with current unicast transmission mode Zone, and service quality meets when pre-conditioned, controls the first handover module and is switched.

The first handover module, for the control according to described the first control module, be switched to described broadcast/group broadcast Single Frequency Network community and receive described business, and the carrying of described unicast transmission mode community is discharged.

In another embodiment of the present invention, this first state read module comprises: broadcast/group broadcast Single Frequency Network community acquiring unit.

Broadcast/group broadcast Single Frequency Network community acquiring unit, broadcast/group broadcast Single Frequency Network list of frequency or broadcast/group broadcast Single Frequency Network Neighboring Cell List by the unicast transmission mode community, know that neighbor cell comprises broadcast/group broadcast Single Frequency Network community, and the cell frequency information of described neighbor cell and the threshold value of community selection and/or the parameter of broadcast/group broadcast Single Frequency Network cell measurement;

In another embodiment of the present invention, broadcast/group broadcast Single Frequency Network list of frequency or broadcast/group broadcast Single Frequency Network Neighboring Cell List are included in the system broadcast message of unicast transmission mode community; Or in the measurement control message; Or in the hand off signaling of unicast transmission mode community.

This hand off signaling comprises: radio bearer is set up signaling (as RADIO BEARER SETUP) or radio bearer and is reshuffled that signaling (as RADIO BEARER RECONFIGURATION) or radio bearer release signaling (as RADIO BEARERRELEASE) or transmission channel are reshuffled signaling (as TRANSPORT CHANNEL RECONFIGURATION) or physical channel is reshuffled the signaling that signaling (as PHYSICAL CHANNEL RECONFIGURATION) etc. can complete handoff functionality.

In another embodiment of the present invention, the parameter of broadcast/group broadcast Single Frequency Network cell measurement comprises one of following information or arbitrary combination: measure threshold value, measuring amount, metering system, report criterion.

When switch to the non-MBSFN community MBSFN community or MBSFN IMB community, UE can comprise: the second state read module, the second control module and the second handover module.

The second state read module, for when described UE receives business in broadcast/group broadcast Single Frequency Network community, pre-conditioned if the service quality of described business does not meet, UE is measured the neighbor cell of described broadcast/group broadcast Single Frequency Network community.

The second control module, if described neighbor cell is the unicast transmission mode community, and UE obtains described neighbor cell and has while switching in broadcast/group broadcast Single Frequency Network community the ability that keeps business continuance from the system broadcast message of described neighbor cell, and obtain the information of the business that neighbor cell has current UE receiving; If neighbor cell has the business that current UE is receiving, control described the second handover module and be switched to described unicast transmission mode community.

The second handover module, for the control according to described the second control module, be switched to described unicast transmission mode community.

In another embodiment of the present invention, Access Network can comprise: core net linkage unit and subscriber equipment linkage unit.

The core net linkage unit, for setting up the Iu port carrying for business with core net.

The subscriber equipment linkage unit, for described UE, setting up the air interface carrying, so that described UE receives described business in point-to-point mode from Access Network; Described UE and described Access Network are set up described air interface carrying by dedicated data channel or high speed shared data channel.

Wherein, above-mentioned switched system is a kind of UE that the embodiment of the present invention proposes while being switched to the unicast transmission mode community, is linked into a kind of system of unicast transmission mode community.Certainly the above embodiments of the present invention are an application of this system.This system can access separately a system of FDD community as UE.Wherein above-mentioned core net linkage unit and subscriber equipment linkage unit can be arranged in this radio network controller, can be also an independent equipment that is arranged at Access Network.

In another embodiment of the present invention, the core net linkage unit can also comprise: response subelement, connexon unit and judgment sub-unit.

The response subelement, for receiving the initiation task requests of described core net, and respond described initiating business request, and set up context corresponding to described business, for example Broadcast PDP context.

The connexon unit, set up the Iu port carrying for described business for making described Access Network and core net.

Judgment sub-unit, for judging the current described business of UE request receiving that whether has; If it is between described Access Network and described core net, set up user's carrying and signaling bear; Otherwise set up signaling bear between described Access Network and described core net.

In order to make UE can know that this adjacent non-IMB keeps the ability of business continuance while supporting to be switched by the IMB community, this Access Network also comprises:

The business acquiring unit, receive the service lists of described neighbor cell, and compare with current business for the business UE of knowing neighbor cell; Or UE by current business, whether by the inquiry signaling, to send to Serving cell identical with this business with the business of determining neighbor cell.

In another embodiment of the present invention, the method that above-mentioned UE receives the service lists of described neighbor cell can, with reference to preceding method embodiment, repeat no more herein.

In another embodiment of the present invention, UE sends to business whether with this business identical comprise of Serving cell to determine neighbor cell: UE by current business by the inquiry signaling and sends the inquiry signaling, and this inquiry signaling comprises the information of described business; After Serving cell receives this inquiry signaling, with the service lists of described above-mentioned neighbor cell, contrasted.

Support the UE of IMB to have at least two antennas, this first antenna is for connecting broadcast/group broadcast Single Frequency Network community; This second antenna is for connecting the FDD community; Therefore when switch the MBSFN of the first antenna or MBSFN IMBXiang FDD community, can judge whether to affect according to predefined rule switching or the community selection/reselection flow process of the second antenna.

If, when being redefined for this switching and the switching of the second antenna or community selection/reselection flow process not impacted, can just adopt above-mentioned method.

Comprise following content if be redefined for when this switching impacts the switching of the second antenna or community selection/reselection flow process.

For the selection/reselection process, in adjacent area, meet on the basis of S and R criterion, the preferential selection of UE can support UE receiving the community of business, and may not be the best community of sequence; When perhaps UE is for support and IMB switching, keep the community of business continuance to increase bias in the parameter of calculating S and/or R criterion, make UE can preferentially choose this community.

For handoff procedure, the UE reporting measurement is as a result the time, and the ability information that comprises UE and/or expectation continue the sign of reception business, and RNC is when the select target community, and preferential selection can maintain the community of business.

In technique scheme, UE is switched to this unicast transmission mode community, if this unicast transmission mode community adopts, it is the transmission radio network controller of common support MBMS business, this RNC supports the transmission of MBMS business, and MBMS broadcasting service corresponding to this RNC is similar with the send mode of IMB business.While adopting this RNC, Access Network can make UE can know that this adjacent non-IMB supports UE receiving the transmission of business in the following manner.

Access Network comprises: message sending unit, be used for according to broadcast/group broadcast Single Frequency Network cell notification indicating channel, or transmission broadcast/group broadcast Single Frequency Network cell downlink chain of command information channel, send this unicast transmission mode community to UE and support whether broadcast/group broadcast and/or UE support the information of the business that UE is receiving.

In such scheme, the service quality of the business in current Serving cell (IMB community) does not meet pre-conditioned, can current service quality and the threshold value of obtaining be compared to determine by UE.Acquisition is broadcasted in UECong IMB community in SIB 3 or SIB 11 by threshold value.

When switch to the IMB community IMB community, UE can comprise: third state read module, the 3rd control module and the 3rd handover module.

Third state read module, for when described UE receives business in broadcast/group broadcast Single Frequency Network community, pre-conditioned if the service quality of described business does not meet, the neighbor cell of described broadcast/group broadcast Single Frequency Network community is measured.

The 3rd control module, for reading the described neighbor cell that described third state read module obtains, if described neighbor cell is broadcast/group broadcast Single Frequency Network community, and and the logical step of business that UE is receiving sends, and service quality meets predefined threshold value, control the 3rd handover module and be switched to described neighbor cell.

The 3rd handover module, for the control according to described the second control module, be switched to described neighbor cell.

In another embodiment of the present invention, described third state read module comprises:

Broadcast/group broadcast Single Frequency Network community acquiring unit, for broadcast/group broadcast Single Frequency Network list of frequency or the broadcast/group broadcast Single Frequency Network Neighboring Cell List of the neighbor cell that issues by current broadcast/group broadcast Single Frequency Network community, know adjacent broadcast/group broadcast Single Frequency Network cell information; And receive threshold and the measurement parameter of the neighbor cell issued by current broadcast/group broadcast Single Frequency Network community, judge whether the service quality of neighbor cell meets pre-conditioned.

In another embodiment of the present invention, the service quality of the business in current Serving cell (IMB community) does not meet pre-conditioned, can current service quality and the threshold value of obtaining be compared to determine by UE.UE obtains above-mentioned threshold value by the broadcast that receives the IMB community, for example, by receiving SIB (System Information Block, system information block) 3 or SIB 11 acquisitions.

Below by several concrete examples, the embodiment of the present invention is made and being further illustrated:

Can broadcast the successional ability of this community supporting business in system broadcast message in RNC Qi Xia community, for example: support the seamless switching (support of seamless handover of MBSFN) by the MBSFN community.Hereinafter referred to as the radio network controller (improved-RNC) of enhancing, it has following characteristics:

1, improved-RNC belongs in the distribution tree of all business, and can resolve broadcast/multicast session and start/stop signaling, for example: MBMS Session Start/MBMS Session Stop signaling, the context that the business of setting up is corresponding, BroadcastPDP context for example, specifying information in this Broadcast PDP context is the content in embodiment as shown in Figure 3, repeats no more herein.

2, set up the Iu user plane bearer of Broadcast broadcast mode between improved-RNC and CN core net for the MBMS business.

3, when UE activates the business under improved-RNC, the service identification that RNC can report according to UE, for UE sets up the point-to-point empty port load-supporting of ptp.

4, improved-RNC can issue the service lists that current area is supported, current broadcasting of notice UE maybe needs the business (optional) of playing.

Wherein RNC passes through the Broadcast PDP context of MBMS Session Start Procedure Acquisition for a certain business, and flow process as shown in Figure 8.

When a certain business is about to start, CN sends MBMS Session Start message to RNC, in order to set up for Iu signaling between the RNC of some business and CN, connects and RAB carries.If while not having UE to trigger the reception of this business under current RNC, RNC can only set up the Iu signaling and connect, and does not set up the user plane carrying.When there being UE to activate this business, and set up again the user plane carrying during request receiving.

The initial service access procedure of UE FDD community can be as described below.

Can broadcast the successional ability of this community supporting business (for example support of seamless handover of MBSFN) in system broadcast message in RNC Qi Xia community.As Fig. 9, initial access process can be as described below.

901, UE obtains and preserves TMGI information.

902,, when a certain business (following description means with business A) while being about to start, the Iu mouthpiece of setting up for business A by session (Session Start) process that starts between CN and RNC carries; In loading establishing process, whether RNC and CN can have the UE access to determine whether to set up user's carrying of Iu mouth according to current area.

In the RNCXia community, if UE request receiving business A is arranged,, in Session start process, need to set up user's carrying and signaling bear.

In the RNCXia community, there is no UE request receiving business A if current, in Session Start process, RNC can only set up signaling bear, waits for while having UE to trigger access and sets up signaling bear again.

903, UE obtains the ability that current area can provide the MBMS business from system broadcast message, and obtain current area will or in progress service lists.

The mode that UE obtains service lists comprises: UE obtains by the direct interaction with BM-SC; UE is stored in the service lists that once read the MBSFN community; RNC is handed down to UE by service lists; RNC is according to the ability information of UE, and RNC can periodically issue this information in cell update or URA renewal.

UE can trigger RNC by up signaling and issue list information; If utilize existing signaling, may comprise: request message (for example RRC connection Request), cell update signaling (for example Cell update), measurement report (such as Measurement Report) etc. are set up in the RRC connection.UE is by carrying the indication information that obtains service lists, the list of RNC issuing service.Perhaps UE is by the newly-increased list signaling of obtaining, and for example the MBMS radio bearer is set up indication (as MBMS Radio BearerSetup Indicator).Wherein cause is set to: obtain service list (obtaining service list), for obtaining current RNC, provide service lists.

UE also can adopt the current mode that is receiving business of inquiry, to the RNC inquiry, whether can play the current business received.The mode of UE inquiry is identical with the mode of obtaining service lists, the cause value difference of carrying in the RRC signaling when different.And, during inquiry, UE need to carry the identification information of the business of wanting inquiry.

904, UE is according to the current service lists of obtaining, and when interested in business A, the request that carrying is set up is initiated in UE FDD community.UE notice RNC supports MBMS business receiving system.

The request that this carrying is set up has different request modes for the UE of different conditions:

For the UE of Idle state, UE need to send RRC Connection Request message, and the empty port load-supporting for business A is set up in request.Need to carry service identification in this RRC signaling and/or initiate RRC and connect the reason of setting up.

For the UE of PCH and FACH state, UE need to send cell update, and the empty port load-supporting for business A is set up in request.Need to carry service identification in this RRC signaling and/or initiate RRC and connect the reason of setting up.

For the UE of DCH state, UE need to send measurement report order, and the empty port load-supporting for business A is set up in request.Need to carry service identification in this RRC signaling and/or initiate RRC and connect the reason of setting up.

For above process, for the UE of connection status, all can increase the up signaling request of RRC newly and set up the empty port load-supporting for business A, need to carry service identification in this RRC signaling and/or initiate the reason that RRC connects foundation.The up signaling that up signaling and 903 that should be newly-increased is obtained the current area service lists can be the same signaling.

905, after RNC receives that request command is set up in the carrying of UE transmission, initiate the process that empty port load-supporting is set up.

As shown in figure 10, the process that this carrying is set up can be as described below.

If without any UE request receiving business A, this process can trigger between RNC and CN the process of establishing for the user plane bearer of business A before UE initiates service access.See 1.If, before business A is set up in the request of UE initiation service access, had UE to initiate the access request for this business, the process that UE initiates to access can not trigger the foundation of user plane bearer.

In loading establishing process, RNC may be based upon carrying the DCH channel, also carrying may be based upon to the HS-DSCH channel.

906,, after empty port load-supporting has been set up, UE starts to receive in the business of FDD community.UE adopts dedicated logical channel, carries out point-to-point business.

Be more than that the complete procedure that business A receives is initiated in UE FDD community.

The FDD community can be as described below to the handoff procedure of IMB community.

In the present embodiment, UE FDD community receives business A, when there is the IMB community in the adjacent area of UE acquisition FDD, can trigger the switching of FDD community to the IMB community, and its flow process as described in Figure 11.

1101, UE Zheng FDD community receives business A, the information that the adjacent area of UE acquisition FDD is the IMB community.

This information access process may obtain by UE reading system broadcast.

The hand off signaling that the acquisition process of this information may be switched to current area by UE obtains, and hand off signaling comprises: radio bearer is set up signaling (as RADIO BEARER SETUP) or radio bearer and is reshuffled signaling (as RADIO BEARERRECONFIGURATION) or radio bearer release signaling (as RADIO BEARER RELEASE) or transmission channel and reshuffle signaling (as TRANSPORT CHANNEL RECONFIGURATION) or physical channel and reshuffle the signaling that signaling (as PHYSICAL CHANNEL RECONFIGURATION) etc. can complete handoff functionality.

Obtaining of this information may obtain by measuring control message, for example measurement control message.

Frequency information except comprising the IMB community in the information that UE obtains, also may comprise the threshold value that the IMB community is selected.This threshold value is judged for UE, the whether applicable business reception in a certain IMB adjacent area.

Also may comprise the current business A received in the information that UE obtains and in which IMB adjacent area play, for UE selects the IMB adjacent area, provide foundation.

Alternatively, also can comprise the process that between CN and RNC, the MBMS business starts request and response before 1101, after RNC receives that the MBMS business starts response, also can send the indication of MBMS RAB to CN.

1102, UE adopts the IMB reception antenna to carry out search and the measurement of IMB adjacent area.This process also may comprise the process that the IMB reception antenna of UE is opened.UE carries out point-to-point business in dedicated logical channel.

If in 1101, UE just can obtain at the IMB of play service A neighboring BS information, UE may only be play search and the measurement of the IMB adjacent area of current business; Otherwise UE need to measure all IMB adjacent area, until this adjacent area can obtain business A.

UE in the search procedure to the IMB adjacent area, to the measurement result of each community need with one in the threshold value that obtains compare, when meeting this threshold value, UE resides in method IMB community; If UE can not obtain this threshold value, UE need to be in measuring process, is residently in turn judged, until find suitable IMB community.

1103, UE measures neighbor cell, if can retrieve suitable IMB community (play service A, and the quality of reception meets the demands), UE can receive in the IMB community business A.

1104, the process that carrying discharges is initiated in UE FDD community, discharges the dedicated bearer occupied in the FDD community.

UE initiates the following mode that has of carrying release:

UE sends new RRC signaling (for example: radio bearer discharges indication (Radio Bearer Release Indicator)), wherein comprises the sign of carrying release cause and/or carrying.

UE initiates carrying by existing RRC signaling and discharges, and existing RRC signaling may be measurement report or various switching related signaling.The sign that wherein comprises carrying release cause and/or carrying.

1105, carrying has discharged rear UE and has disconnected the reception of business A in the FDD community, and Er IMB community receives.

After carrying has discharged, if current area has not had UE at the business of reception A, RNC can discharge user's carrying of Iu mouth.

If fail to detect suitable IMB community in 1106 1102, UE still receives in the FDD community, can not be accomplished to the switching of IMB community.

The IMB community can be as described below to the handoff procedure of FDD community.

In the present embodiment, UE IMB community receives business A, and flow process as shown in figure 12.

1201, UE IMB community receives business A, and before the trade of going forward side by side, the quality of reception of IMB community is measured.

1202, when the result at the IMB cell measurement lower than the current system broadcast in to the Serving cell quality during definite threshold value, UE starts the search to adjacent area.

The IMB community is current as service message, and the threshold value of measurement is broadcasted in SIB 3.

The adjacent area of current I MB community may comprise the IMB community also may comprise FDD (non-IMB) community; Wherein the information of IMB adjacent area can obtain in current area.And the signaling of FDD adjacent area can obtain by the FDD adjacent area resident.

In the process to adjacent area search, two reception antennas of UE can be simultaneously to IMB adjacent area and the search of FDD adjacent area, and the priority of IMB adjacent area of take is high, if can find suitable ZeIMB adjacent area, IMB adjacent area resident, this is included in embodiment five.Now take that can not to find suitable IMB adjacent area be prerequisite.

UE according to whether DuiFDD community selection/reselection/switching exerts an influence, can be divided into two kinds of different situations in the process to the adjacent area search:

(1) if the switching of IMBXiang FDD community does not produce any impact to the selection/reselection of existing FDD community/switching.

If the resident FDD adjacent area of 1203a, UE does not meet the condition of switching/selection/reselection, UE judges the whether reception of supporting business A of current area; If the switched/selection/reselection of FDD adjacent area that UE is resident, UE judges whether the reception of supporting business A in target FDD community, and carries out following process.

The FDD community whether reception judgement of supporting business A is identical with embodiment mono-: UE reads the ability indication of current area and the service lists of current area.If there is business A in service lists, current area support.

If the reception of the community supporting business A that 1204a searches, UE initiates the service access process in current area.

After 1205a, service access process complete, UE finishes the reception in the IMB community, starts the reception in the FDD community, and handoff procedure completes.

(2) switching of IMBXiang FDD community exerts an influence to the selection/reselection of existing FDD community/switching.

If the not reception of supporting business A of FDD adjacent area that 1203b, UE are resident, UE triggers the process of switching/selection/reselection:

For the selection/reselection process, on the basis of S and R criterion, UE preferentially selects the community of supporting business A, rather than the best community of sorting; Perhaps UE increases bias for the community of supporting the IMB switching, makes UE can preferentially choose this community.

For handoff procedure, the UE reporting measurement as a result the time, comprises the sign that expectation continues reception business A, and RNC is when the select target community, and preferential selection can maintain the community of business A.

If the reception of the community supporting business A that 1204b searches, UE initiates the service access process in current area.

After 1205b, service access process complete, UE finishes the reception in the IMB community, starts the reception in the FDD community, and handoff procedure completes.

If 1206b can not find suitable FDD community, business continuance can not ensure.

Between IMB community and FDD community, the switching flow of MBMS business is as follows.

RNC has following characteristics: 1, RNC supports the transmission of MBMS business; 2, the MBMS business has broadcast and two kinds of different modes of multicast; 3, the MBMS broadcasting service that this RNC is corresponding is similar with the send mode of IMB business.

At first for the switching between Shi IMB community and MBMS broadcasting service corresponding to this RNC, still take business A as example.

1, UE IMB community receives business A, and before the trade of going forward side by side, the quality of reception of IMB community is measured.

2, when the result at the IMB cell measurement lower than the current system broadcast in to the Serving cell quality during definite threshold value, UE starts the search to adjacent area.

The IMB community is current as Serving cell, and the threshold value of measurement is broadcasted in SIB 3;

The adjacent area of current I MB community may comprise the IMB community also may comprise the FDD community; Wherein the information of IMB adjacent area can obtain in current area.And the signaling of FDD adjacent area can obtain by the FDD adjacent area resident.

In the process to adjacent area search, two reception antennas of UE can be simultaneously to IMB adjacent area and the search of FDD adjacent area, and the priority of IMB adjacent area of take is high, if can find suitable ZeIMB adjacent area, IMB adjacent area resident, this is included in embodiment five.Now take that can not to find suitable IMB adjacent area be prerequisite.

3, for the FDD adjacent area of supporting MBMS business A, UE need to read the MICH/MCCH of this adjacent area, could determine whether supporting business A of this community.

4, when UE finds the FDD adjacent area of supporting MBSM business A, the direct Gai FDD of UE community receives the business of broadcast mode, and finishes the reception in the IMB community.

When UE can not receive business in the FDD adjacent area, the business A that UE is receiving interrupts, and can not guarantee the continuous reception of business A.

Secondly for the switching between Shi IMB community and MBMS multicast service corresponding to this RNC, still take business A as example.

1, UE IMB community receives business A, and before the trade of going forward side by side, the quality of reception of IMB community is measured.

2, when the result at the IMB cell measurement lower than the current system broadcast in to the Serving cell quality during definite threshold value, UE starts the search to adjacent area.

The IMB community is current as Serving cell, and the threshold value of measurement is broadcasted in SIB 3;

The adjacent area of current I MB community may comprise the IMB community also may comprise the FDD community; Wherein the information of IMB adjacent area can obtain in current area.And the information of FDD adjacent area can obtain by the FDD adjacent area resident.

In the process to adjacent area search, two reception antennas of UE can be simultaneously to IMB adjacent area and the search of FDD adjacent area, and the priority of IMB adjacent area of take is high, if can find suitable ZeIMB adjacent area, IMB adjacent area resident, this is included in embodiment five.Now take that can not to find suitable IMB adjacent area be prerequisite.

3, for the FDD adjacent area of supporting MBMS business A, UE need to read the MICH/MCCH of this adjacent area, could determine whether supporting business A of this community.

4, when UE finds the FDD adjacent area of supporting MBSM business A, the process of Joining is initiated in UE FDD community, adds this multicast group.

5, after the Joining process completes, UE FDD community receives this business, finishes the reception in the IMB community.

If 6 UE can not find suitable community, the continuity of business A can not ensure.

Above introduction be the switching of IMB to MBMS FDD community.In the FDD community, in the process of IMB community switching, difference is the MBMS business for broadcast mode, and UE can switch to IMB, also can not switch.When switching, need to not initiate in the FDD community process that carrying discharges.And, for the MBMS business of multicast pattern, UE need to initiate in the FDD community Leaving process after switching, rather than carry dispose procedure.

Switching flow between IMB (this sentences the A sign) community and IMB (this sentences the B sign) community can be as described below.

Because receiving some business, UE IMB community there is the FDD of reduction cell load, the business quality of reception is than advantages of higher, therefore as UE when some IMB (A) community quality of reception is poor, if there is the IMB adjacent area of playing identical services on every side, the UE ordinary priority is chosen this IMB adjacent area and is carried out the business reception.When only improper in the IMB community or network side does not wish that UE IMB community receives, just can cause UE to select the FDD community to continue to receive identical business.Therefore the present embodiment is for the handoff procedure between Shi IMB community and IMB community.

1, UE just receives business A at IMB (A), the measurement of cell quality before the trade of going forward side by side.

2,, when the quality of reception at IMB (A) during lower than threshold value, UE starts the search of IMB adjacent area.

The information of IMB adjacent area is included in the downlink signaling of current area.For the adjacent area with frequency and alien frequencies, different measurement threshold values can be set.Here for simply, for frequency and alien frequencies, the same door limit value all being set.

In the system broadcast message that relevant current area and the threshold value of adjacent area may comprise.

For the IMB adjacent area of alien frequencies, UE need to start compact model, so that do not affect the reception of carrying out business, just UE can only can carry out the measurement of adjacent area when pressing mold starts;

Perhaps UE issues the service lists of adjacent area in current area, and which community UE need to receive according to the judgement of adjacent area service lists.By the modes such as UE buffer memory are set, the business that can ensure is not interrupted.

3, when UE searches suitable IMB (B) adjacent area, UE receives current business at Target cell.Handoff procedure finishes.

The IMB community related in the invention process belongs to a kind of of MBSFN community, and the solution of the present invention is not only applicable to IMB community or MBSFN community, also is applicable to have the UE of similar structures simultaneously.

The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: the present invention proposes a kind of communication system cross district switching method and system.The cross district switching method of the communication system of the embodiment of the present invention and device, to various dissimilar Serving cells and neighbor cell, proposed different changing methods, to realize that business can not interrupted when switching.Communication system cross district switching method and system that the embodiment of the present invention proposes, Serving cell and neighbor cell that can be different be switched, and with business when switching, can not interrupt.Adopt switching and the service access flow process of the embodiment of the present invention, can better ensure between UE IMB community and FDDunicast community the continuity of business while switching, promote the user and experience and satisfaction.Simultaneously, due to the guarantee of handoff procedure to business, can only in hot spot region, provide IMB to arrange net, save the operation cost of network.Can increase the controllability of network side to the UE switching, according to the decision-making of network, business-receive mode of UE is adjusted simultaneously.

The those skilled in the art can be well understood to, for convenience and simplicity of description, the system of foregoing description, the specific works process of device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.

In the several embodiment that provide in the application, should be understood that, disclosed system, apparatus and method, can realize by another way.For example, device embodiment described above is only schematic, for example, the division of described unit, be only that a kind of logic function is divided, during actual the realization, other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.

The described unit as the separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed on a plurality of network element.Can select according to the actual needs some or all of unit wherein to realize the purpose of the present embodiment scheme.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, also can adopt the form of SFU software functional unit to realize.

If the form of SFU software functional unit of usining described integrated unit realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium.Understanding based on such, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) carry out all or part of of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), the various media that can be program code stored such as random access memory (RAM, Random AccessMemory), magnetic disc or CD.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by the described protection range with claim.

Claims (12)

1. a communication network cross district switching method, is characterized in that, comprising:

Subscriber equipment obtains the information of current service cell and neighbor cell, and is switched according to preset rules;

Described subscriber equipment obtains the information of current service cell and neighbor cell, and is switched according to preset rules, comprising:

When described subscriber equipment receives business in the unicast transmission mode community, if described subscriber equipment is known neighbor cell, comprise broadcast/group broadcast Single Frequency Network community, measure described broadcast/group broadcast Single Frequency Network community; If it is identical with current unicast transmission mode Zone to work as the business of described broadcast/group broadcast Single Frequency Network community, and service quality meets pre-conditioned, described subscriber equipment is switched to described broadcast/group broadcast Single Frequency Network community and receives described business, and the carrying of described unicast transmission mode community is discharged; Perhaps

When described subscriber equipment receives business in broadcast/group broadcast Single Frequency Network community, pre-conditioned if the service quality of described business does not meet, described subscriber equipment is measured the neighbor cell of described broadcast/group broadcast Single Frequency Network community; If described neighbor cell is the unicast transmission mode community, and described subscriber equipment obtains described neighbor cell and has the ability that keeps business continuance while switching in broadcast/group broadcast Single Frequency Network community from the system broadcast message of described neighbor cell, and whether the acquisition neighbor cell has the business information that described subscriber equipment is receiving; If have the business that described subscriber equipment is receiving in described service lists, described subscriber equipment is switched to described unicast transmission mode community; Perhaps

When described subscriber equipment receives business in broadcast/group broadcast Single Frequency Network community, pre-conditioned if the service quality of described business does not meet, subscriber equipment is measured the neighbor cell of described broadcast/group broadcast Single Frequency Network community; If described neighbor cell is broadcast/group broadcast Single Frequency Network community, and described neighbor cell has the business that current user equipment is receiving, and the service quality of described business meets pre-conditionedly, and described subscriber equipment is switched to described neighbor cell;

Wherein, described broadcast/group broadcast Single Frequency Network community is comprehensive mobile broadcast cell.

2. communication network cross district switching method according to claim 1, is characterized in that, described subscriber equipment knows that neighbor cell comprises that broadcast/group broadcast Single Frequency Network community comprises:

Described subscriber equipment is according to broadcast/group broadcast Single Frequency Network list of frequency or the broadcast/group broadcast Single Frequency Network Neighboring Cell List of unicast transmission mode community, know that neighbor cell comprises broadcast/group broadcast Single Frequency Network community, and the parameter of the cell frequency information of described neighbor cell and/or broadcast/group broadcast Single Frequency Network cell measurement;

Described broadcast/group broadcast Single Frequency Network list of frequency or broadcast/group broadcast Single Frequency Network Neighboring Cell List are included in: in the system broadcast message of unicast transmission mode community or in the measurement control message or in the hand off signaling of unicast transmission mode community.

3. communication network cross district switching method according to claim 2, it is characterized in that, the parameter of described broadcast/group broadcast Single Frequency Network cell measurement comprises following arbitrary information or combination: measure threshold value, measuring amount, measurement channel, metering system, report criterion.

4. communication network cross district switching method according to claim 1, is characterized in that, described the carrying of described unicast transmission mode community is discharged and to comprise:

Described subscriber equipment sends release message, comprises following arbitrary information or combination in described release message: carrying release cause, the sign of carrying, service identification;

The business release message that described release message is Non-Access Stratum or up radio resource control signaling.

5. communication network cross district switching method according to claim 1, is characterized in that, described method also comprises:

Described subscriber equipment receives the service quality threshold value of Access Network broadcast, and judges according to described threshold value whether the service quality of current described business meets pre-conditioned.

6. communication network cross district switching method according to claim 1 or 5, is characterized in that, described subscriber equipment obtains the mode whether neighbor cell have the business information that current user equipment receiving and comprises:

Described subscriber equipment receives the service lists of described neighbor cell, and compares with current business; Or described subscriber equipment by current business, whether by the inquiry signaling, to send to Serving cell identical with this business with the business of determining neighbor cell.

7. communication network cross district switching method according to claim 6, is characterized in that, the service lists that described subscriber equipment receives described neighbor cell comprises:

Described subscriber equipment receives the service lists that Access Network issues;

Or described subscriber equipment is by obtaining service lists with the BM-SC direct interaction;

Or described subscriber equipment is by cell update information or the list of URA lastest imformation issuing service;

Or described subscriber equipment reads the service lists of the described unicast transmission mode community of pre-stored;

Or described subscriber equipment issues the list of the described Access Network issuing service of request triggering by sending service lists.

8. communication network cross district switching method according to claim 6, is characterized in that, whether described subscriber equipment sends to Serving cell by current business by the inquiry signaling identical with this business with the business of determining neighbor cell, comprising:

Described subscriber equipment sends the inquiry signaling, and described inquiry signaling comprises the information of described business; After Serving cell receives this inquiry signaling, with the service lists of described neighbor cell, contrasted.

9. communication network cross district switching method according to claim 1 or 5, is characterized in that, described subscriber equipment has at least two antennas, and the first antenna is for connecting broadcast/group broadcast Single Frequency Network community; The second antenna is for connecting the unicast transmission mode community; Described method also comprises:

When the second antenna handed over service community of described subscriber equipment, the community that preferential selection is identical with the business of the Serving cell of described the first antenna.

10. communication network cross district switching method according to claim 1, is characterized in that, described method also comprises:

The broadcast/group broadcast Single Frequency Network list of frequency of the neighbor cell that described subscriber equipment issues by current broadcast/group broadcast Single Frequency Network community or broadcast/group broadcast Single Frequency Network Neighboring Cell List, know adjacent broadcast/group broadcast Single Frequency Network cell information;

Receive threshold and the measurement parameter of the neighbor cell that described subscriber equipment issues by current broadcast/group broadcast Single Frequency Network community, judge whether the service quality of neighbor cell meets pre-conditioned.

11. communication network cross district switching method according to claim 1, is characterized in that, described method also comprises:

Described subscriber equipment receives the service quality threshold value of the affiliated Access Network broadcast in broadcast/group broadcast Single Frequency Network community, and judges according to described threshold value whether the service quality of current described business meets pre-conditioned.

12. the system of a communication network Handover, comprise subscriber equipment, described subscriber equipment obtains the information of current service cell and neighbor cell, and according to the ability information of described Serving cell and neighbor cell and the broadcasting/packet service provided, and measure defined preset rules and switched;

Described subscriber equipment comprises: the first state read module, the first control module and the first handover module;

Described the first state read module, for reading described current service cell and described neighbor cell, if described current service cell is the unicast transmission mode community, and described neighbor cell comprises broadcast/group broadcast Single Frequency Network community, measure measurement threshold value measuring amount and/or the metering system of described broadcast/group broadcast Single Frequency Network community and/or report criterion;

Described the first control module, for reading business and the service quality of the described broadcast/group broadcast Single Frequency Network community that described the first state read module obtains, when the business of described broadcast/group broadcast Single Frequency Network community identical with current described unicast transmission mode Zone, and service quality meets when pre-conditioned, controls described the first handover module and is switched;

Described the first handover module, for the control according to described the first control module, be switched to described broadcast/group broadcast Single Frequency Network community and receive described business, and the carrying of described unicast transmission mode community is discharged; Perhaps,

Described subscriber equipment comprises: the second state read module, the second control module and the second handover module;

Described the second state read module, for when described subscriber equipment receives business in broadcast/group broadcast Single Frequency Network community, if it is pre-conditioned that the service quality of described business does not meet, described subscriber equipment is measured the neighbor cell of described broadcast/group broadcast Single Frequency Network community;

Described the second control module, if described neighbor cell is the unicast transmission mode community, and described subscriber equipment obtains described neighbor cell and has while switching in broadcast/group broadcast Single Frequency Network community the ability that keeps business continuance from the system broadcast message of described neighbor cell, and obtain the information of the business that described neighbor cell has current described subscriber equipment receiving; If described neighbor cell has the business that current described subscriber equipment is receiving, control described the second handover module and be switched to described unicast transmission mode community;

Described the second handover module, for the control according to described the second control module, be switched to described unicast transmission mode community; Perhaps,

Described subscriber equipment comprises: third state read module, the 3rd control module and the 3rd handover module;

Described third state read module, for when described subscriber equipment receives business in broadcast/group broadcast Single Frequency Network community, pre-conditioned if the service quality of described business does not meet, the neighbor cell of described broadcast/group broadcast Single Frequency Network community is measured;

Described the 3rd control module, for reading the described neighbor cell that described third state read module obtains, if described neighbor cell is broadcast/group broadcast Single Frequency Network community, and and the service synchronization that described subscriber equipment is receiving sends, and service quality meets predefined threshold value, control described the 3rd handover module and be switched to described neighbor cell;

Described the 3rd handover module, for the control according to described the second control module, be switched to described neighbor cell;

Wherein, described broadcast/group broadcast Single Frequency Network community is comprehensive mobile broadcast cell.

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