CN102264031A - Method and system for distributing radio resources for multicast control channel - Google Patents
Method and system for distributing radio resources for multicast control channel Download PDFInfo
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- CN102264031A CN102264031A CN2010101865937A CN201010186593A CN102264031A CN 102264031 A CN102264031 A CN 102264031A CN 2010101865937 A CN2010101865937 A CN 2010101865937A CN 201010186593 A CN201010186593 A CN 201010186593A CN 102264031 A CN102264031 A CN 102264031A
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Abstract
The invention discloses a method for distributing radio resources for a multicast control channel (MCCH). If a plurality of multimedia broadcast multicast service single frequency network (MBSFN) areas in a cell belong to the same multi-cell/multicast coordination entity (MCE), the MCE divides radio resources in the plurality of MBSFN areas; if the plurality of MBSFN areas in the cell belong to different MCEs, the MCE divides the radio resources through coordination; and the MCE transmits the radio resource division situation to an evolution base station (eNB) and the eNB distributes the radio resources for the corresponding MCCH. The invention further discloses a system for distributing the radio resource for the multicast control channel. As the MCE to which the plurality of MBSFN areas belong divides the radio resources for the MBSFN areas, or the plurality of MCEs to which the plurality of MBSFN areas belong divide the radio resources through coordination, the problem of conflict of resource configuration of MCCH corresponding to the overlapped MBSFN areas can be solved and fair and reasonable configuration can be realized.
Description
Technical field
The present invention relates to wireless communication technique, relate in particular to a kind of for the method and system of multicast control channel distributing radio resource.
Background technology
In order to effectively utilize mobile network resource, 3GPP has proposed multimedia broadcast multi-broadcasting business (Multimedia Broadcast Multicast Service, MBMS), in the mobile network, provide a data source to send the point-to-multipoint service of data to a plurality of users, the realization Internet resources are shared, improve utilization rate of network resource, the especially Bao Gui interface resource of eating dishes without rice or wine.Long Term Evolution (Long Term Evolution, LTE) in the network, the MBMS technology of research be called evolution multimedia broadcast multi-broadcasting business (EvolvedMBMS, E-MBMS).
In the existing LTE technology, the logic channel of MBMS business is multicast service channel (Multicast TrafficCHannel, MTCH), the session of the corresponding MBMS business of each bar MTCH, many the MTCH channel can be mapped to same transmission channel or many Multicast Channel (Multicast CHannel, MCH), article one, transmission channel or many MCH channel Mapping are to same physical channel (Physical MulticastChannel, PMCH), article one, (MultimediaBroadcast multicast service Single Frequency Network, MBSFN) form by subframe by one group of multimedia broadcast multicast single frequency network for the PMCH channel.
In existing LTE technology, introduced the notion in MBSFN zone, in a MBSFN zone, the professional MBSFN mode that adopts of MBMS sends, different districts adopts the duplicate physical signalling of transmission of identical resource, content and time synchronized in the same MBSFN zone, to realize the diversity reception gain of receiving terminal (UE).In a MBSFN zone, can dispose one or more PMCH, a PMCH can carry one or more MCH, and is preferred, MCH channel of a PMCH carrying.
(Multicast Control Channel, the MCCH) configuration information of every MCH/PMCH in MBSFN zone of carrying comprise MBSFN sub-frame configuration, Modulation and Coding Scheme of each PMCH channel configuration or the like to multicast control channel.In the prior art, MCCH and MBSFN zone are one to one.
The MCCH channel is the configuration information of bearer service also, comprises in the MBSFN zone professional sign, session identification, state, Logic Channel Identifier (Logical Channel ID, information such as LCID).UE begins to receive this professional data after obtaining the information of a concrete business by reception MCCH on the MTCH channel.(Broadcast Control CHannel, BCCH) form that goes up by system message sends the configuration information of MCCH channel at broadcast channel.If there are many MCCH channels, each bar MCCH is a corresponding configuration set information in broadcast.In the prior art, in SIB13 (System InformationBlock13), provide the resource distribution of MCCH, comprised repetition period (RepetitionPeriod), vertical shift (Offset), modification cycle (Modification Period) and the subframe position etc. of MCCH.
Fig. 1 is the logical architecture schematic diagram of E-MBMS, as shown in Figure 1, comprise multi-media broadcasting service gateway (MBMS GW) among the E-MBMS, mobile management entity (Mobility Management Entity, MME), many sub-districts/multicast coordination entity (Multi-cell/Multicast Coordination Entity, MCE) and eNB (Evolved Node B), M1 is user plane interface (user plane interface) among the figure, M2 is the inherent control plane interface of evolved UMTS Terrestrial radio access network (E-UTRAN), and M3 is the control plane interface between EPC (Evolved Packet Core) and the E-UTRAN.
MCE is a kind of logic entity, and therefore, it can be the part of other network elements.The function of MCE be for the MBSFN zone of many cell transmission all eNB distributing radio resource, to carry out MBSFN transmission, the configuration information relevant with MCCH is exactly that MCE sends to eNB by the M2 interface, in addition, also determine wireless transmission the detailed configuration mode (as the modulation and encoding mechanism MCS) etc.After UE enters the MBSFN sub-district, UE will read the message of Broadcast Control Channel (BCCH), multicast control channel (MCCH) and obtain the configuration information of MBMS business in the Target cell, receive required business then on MTCH.
But there is following problem in prior art: if a sub-district belongs to a plurality of MBSFN zone, there is the overlapping region in promptly a plurality of MBSFN zone, then has many MCCH in this sub-district, every corresponding MBSFN zone of MCCH channel.If a plurality of MBSFN zone belongs to different MCE control, each MCE is the eNB allocation radio resource according to self needs, eNB according to MCE be designated as the MCCH distributing radio resource time, may distribute identical resource for different MCCH, perhaps be that identical MCCH distributes different resources, thereby produce resource contention.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system of multicast control channel distributing radio resource that are, can in single subdistrict, exist under the situation in a plurality of MBSFN zone, the Radio Resource of carrying MCCH is made fair and reasonable configuration, avoid the MCCH resource allocation conflict.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of is the method for multicast control channel distributing radio resource, comprising:
Comprise a plurality of multimedia broadcast multi-broadcasting business single frequency network MBSFN zone in the sub-district, and described a plurality of MBSFN zone belongs to same many sub-districts/multicast coordination entity MCE, and the MCE under then described a plurality of MBSFN zone carries out Radio Resource to described a plurality of MBSFN zone and divides; Comprise a plurality of MBSFN zone in the sub-district, and described a plurality of MBSFN zone belongs to different MCE, then described different MCE carries out Radio Resource to corresponding M BSFN zone through consultation and divides;
MCE sends to eNB under the described sub-district with the Radio Resource dividing condition, and described eNB is the corresponding multicast control channel MCCH distributing radio resource in described a plurality of MBSFN zone according to MCE to the dividing condition of Radio Resource.
The a plurality of MBSFN zone that comprises in the described sub-district is static region or semi-static zone.
Described different MCE carries out Radio Resource to corresponding M BSFN zone through consultation and is divided into: consulting between the MCE successfully, is corresponding M BSFN region allocation Radio Resource according to negotiation result then; Consult failure between the MCE, then the managed network element by other carries out the Radio Resource division to corresponding MBSFN zone.
Described different MCE carries out Radio Resource to corresponding M BSFN zone through consultation and is divided into: described different MCE holds consultation by the network element among the block core EPC of evolution,
Network element among the described EPC is mobile management entity MME and/or multimedia broadcast multi-broadcasting business gateway MBMS GW and/or BroadCast MultiCast Service center BM-SC.
Described Radio Resource dividing condition comprises: repetition period, the skew of radio frames, modification cycle, the subframe position of carrying MCCH.
Described MCE with the eNB that the Radio Resource dividing condition sends under the sub-district is: described MCE sends the control signaling of carrying the resource division situation by the M2 interface to eNB.
Described control signaling is also carried the information relevant with MCCH, and the described information relevant with MCCH comprises one or more in the following information: the relevant Modulation and Coding Scheme of MBSFN sub-frame information, business and control information at correspondence relationship information, MBSFN area identification information, MCCH repetition period and the modification cycle of the size of MCCH message, business and MCCH, MCCH place.
After eNB was the corresponding MCCH distributing radio resource in described a plurality of MBSFN zone, this method also comprised:
ENB sends the resource allocation information of MCCH in system message;
UE is receiving system message on BCCH, and according to the resource allocation information of MCCH in the system message, receive required MCCH information in corresponding radio resource.
A kind of is the system of multicast control channel distributing radio resource, comprising: MCE and eNB; Wherein,
Described MCE is used for comprising in the sub-district a plurality of MBSFN zone, and described a plurality of MBSFN zone is carried out Radio Resource to described a plurality of MBSFN zone and divided when all belonging to described MCE; And comprise a plurality of MBSFN zone in the sub-district, and described a plurality of MBSFN zone is divided by consulting that with other MCE Radio Resource is carried out in corresponding M BSFN zone when belonging to the different MCE that comprises described MCE; And be used for the Radio Resource dividing condition is sent to eNB under the described sub-district;
Described eNB, being used for according to MCE is the corresponding MCCH distributing radio resource in described a plurality of MBSFN zone to the dividing condition of Radio Resource.
The a plurality of MBSFN zone that comprises in the described sub-district is static region or semi-static zone.
Described MCE is divided into by consulting that with other MCE Radio Resource is carried out in corresponding M BSFN zone: described MCE and other MCE consult successfully, are corresponding M BSFN region allocation Radio Resource according to negotiation result then; Described MCE and other MCE consult failure, and then the managed network element by other carries out the Radio Resource division to corresponding MBSFN zone.
Described different MCE carries out Radio Resource to corresponding M BSFN zone through consultation and is divided into: described different MCE holds consultation by the network element among the block core EPC of evolution,
Network element among the described EPC is mobile management entity MME and/or multimedia broadcast multi-broadcasting business gateway MBMS-GW and/or BroadCast MultiCast Service center BM-SC.
The Radio Resource dividing condition that the eNB of described MCE under described sub-district sends comprises: repetition period, the skew of radio frames, modification cycle, the subframe position of carrying MCCH.
Described MCE with the eNB that the Radio Resource dividing condition sends under the sub-district is: described MCE sends the control signaling of carrying the resource division situation by the M2 interface to eNB.
Described MCE also carries the information relevant with MCCH by the M2 interface to the control signaling that eNB sends, and the described information relevant with MCCH comprises one or more in the following information: the relevant Modulation and Coding Scheme of MBSFN sub-frame information, business and control information at correspondence relationship information, MBSFN area identification information, MCCH repetition period and the modification cycle of the size of MCCH message, business and MCCH, MCCH place.
Described eNB also is used for the resource allocation information at system message transmission MCCH;
Described UE is used for receiving system message on BCCH, and according to the resource allocation information of MCCH in the system message, receives required MCCH information in corresponding radio resource.
The present invention is the method and system of multicast control channel distributing radio resource, in single subdistrict, there is a plurality of MBSFN zone, be that a plurality of MBSFN zone is when overlapping, MCE under described a plurality of MBSFN zone is a plurality of MBSFN area dividing Radio Resources, perhaps, a plurality of MCE under described a plurality of MBSFN zone are a plurality of MBSFN area dividing Radio Resources through consultation, and by signaling indication with Radio Resource dividing condition informing network side apparatus (being generally eNB), network equipment is designated as the corresponding MCCH in a plurality of MBSFN zone according to signaling and distributes different Radio Resources, thereby avoided the problem of the corresponding MCCH resource allocation conflict in overlapping MBSFN zone, realized the fair and reasonable of MCCH resource distribution.
Description of drawings
Fig. 1 is the logical architecture schematic diagram of E-MBMS;
Fig. 2 is the method flow schematic diagram of multicast control channel distributing radio resource for the present invention;
Fig. 3 is that the embodiment of the invention one is the method flow schematic diagram of MCCH distributing radio resource;
Fig. 4 is that the embodiment of the invention two is the method flow schematic diagram of MCCH distributing radio resource;
Fig. 5 is the distributed schematic diagrames of the embodiment of the invention two MCE;
Fig. 6 is the embodiment of the invention two applicating example schematic diagrames;
Fig. 7 is that the embodiment of the invention three is the method flow schematic diagram of MCCH distributing radio resource;
Fig. 8 is the distributed schematic diagrames of the embodiment of the invention three MCE.
Embodiment
Basic thought of the present invention is: have a plurality of MBSFN zone in single subdistrict, be that a plurality of MBSFN zone is when overlapping, MCE under described a plurality of MBSFN zone is a plurality of MBSFN area dividing Radio Resources, perhaps, a plurality of MCE under described a plurality of MBSFN zone are a plurality of MBSFN area dividing Radio Resources through consultation, and by signaling indication with Radio Resource dividing condition informing network side apparatus, network equipment is designated as the corresponding MCCH in a plurality of MBSFN zone according to signaling and distributes different Radio Resources.In general, there is not interface between the different MCE, can not directly carry out information interaction, therefore, information interaction between the different MCE need be by block core (the Evolved PacketCore of evolution, EPC) network element in is finished, network element among the described EPC includes but not limited to: mobile management entity (Mobility Management Entity, MME), and/or MBMS gateway (MBMS GW), and/or BroadCast MultiCast Service center (Broadcast Multicast-Service Centre, BM-SC), concrete MCE negotiations process does not belong to emphasis of the present invention, does not describe in detail here.
The object of the invention has been to provide a kind of method of the MCCH of avoiding resource allocation conflict, can guarantee the fair and reasonable of a plurality of MCCH resource distributions in overlapping region.Network equipment is to many MCCH channels of a plurality of MBSFN area configurations in the sub-district,, the corresponding MBSFN zone of MCCH channel, the configuration information of the MBMS business that sends in the carrying institute corresponding MBSFN zone, the configuration information of transmission MCCH in system message.
Fig. 2 is the method flow schematic diagram of multicast control channel distributing radio resource for the present invention, and as shown in Figure 2, this method comprises:
Step 201: comprise a plurality of MBSFN zone in the sub-district, network side judges whether a plurality of MBSFN zone that comprises in the described sub-district belongs to same MCE, if, execution in step 202: otherwise, execution in step 203.
What judge whether a plurality of MBSFN zone of comprising in the sub-district belong to same MCE here, can be the MCE of network side, the network element among the EPC etc.
MCE is a logic entity, can individualism, and perhaps the part as other network elements exists, as the part as eNB.
The a plurality of MBSFN zone that comprises in the sub-district (overlapping a plurality of MBSFN zone) is a static region, and promptly the MBSFN zone is to pass through O﹠amp; M (Operation ﹠amp; Management) semi-static configuration, in the professional process of transmitting of MBMS, the MBSFN zone remains unchanged, and described overlapping region can be to overlap or all overlapping.General, the MBSFN zone is distinguished by MBSFN ID, and MCE distinguishes by MCE ID.
Step 202: the MCE under described a plurality of MBSFN zone carries out Radio Resource to described a plurality of MBSFN zone and divides, and forwards step 204 to.
Step 203: described different MCE carries out Radio Resource to corresponding M BSFN zone through consultation and divides.
Concrete, when holding consultation between the MCE, if consult successfully, be corresponding M BSFN region allocation Radio Resource then according to negotiation result, if consult failure, can as the MME (Mobility Management Entity) among the EPC (Evolved Packet Core) Radio Resource be carried out in corresponding MBSFN zone and divide by other managed network element.
In the process that different MCE holds consultation, according to the concrete condition in overlapping MBSFN zone, negotiation can be adopted multiple mode, and final negotiation result can be the result who repeatedly consults.
Step 204:MCE sends to eNB under the sub-district with the Radio Resource dividing condition.
Here, the Radio Resource dividing condition generally comprises: resource informations such as the repetition period of carrying MCCH, the skew of radio frames, modification cycle, subframe position; Preferably, above-mentioned subframe refers to the MBSFN subframe.
Here, MCE generally sends to eNB by the M2 interface when eNB sends the indication of carrying the Radio Resource dividing condition, and the M2 interface is meant the chain of command interface between MCE and the eNB.ENB is that the signaling of MCCH distributing radio resource is generally indicated in system message, and preferred, described system message is a SIB13 message.
Step 205: described eNB is the corresponding MCCH distributing radio resource in described a plurality of MBSFN zone according to MCE to the dividing condition of Radio Resource.
It is pointed out that eNB in the above-mentioned steps also can be relaying (Relay) eNB, Home eNodeB (Home eNodeB, HeNB) etc.
What deserves to be mentioned is that said method mainly is the resource allocation methods at the MBMS control information, certainly, this method also can be used for the resource allocation of MBMS business datum, as the resource allocation at the MTCH of overlapping region.
The present invention also proposes a kind of system of multicast control channel distributing radio resource that is, comprising: MCE and eNB; Wherein,
Described MCE is used for comprising in the sub-district a plurality of MBSFN zone, and described a plurality of MBSFN zone is carried out Radio Resource to described a plurality of MBSFN zone and divided when all belonging to described MCE; And comprise a plurality of MBSFN zone in the sub-district, and described a plurality of MBSFN zone is divided by consulting that with other MCE Radio Resource is carried out in corresponding M BSFN zone when belonging to the different MCE that comprises described MCE; And be used for the Radio Resource dividing condition is sent to eNB under the described sub-district;
Described eNB, being used for according to MCE is the corresponding MCCH distributing radio resource in described a plurality of MBSFN zone to the dividing condition of Radio Resource.
The a plurality of MBSFN zone that comprises in the described sub-district is static region or semi-static zone.
Described MCE is divided into by consulting that with other MCE Radio Resource is carried out in corresponding M BSFN zone: described MCE and other MCE consult successfully, are corresponding M BSFN region allocation Radio Resource according to negotiation result then; Described MCE and other MCE consult failure, and then the managed network element by other carries out the Radio Resource division to corresponding MBSFN zone.
Described different MCE carries out Radio Resource to corresponding M BSFN zone through consultation and is divided into: described different MCE holds consultation by the network element among the block core EPC of evolution,
Network element among the described EPC is mobile management entity MME and/or multimedia broadcast multi-broadcasting business gateway MBMS GW and/or BroadCast MultiCast Service center BM-SC.
The Radio Resource dividing condition that the eNB of described MCE under described sub-district sends comprises: repetition period, the skew of radio frames, modification cycle, the subframe position of carrying MCCH.
Described MCE with the eNB that the Radio Resource dividing condition sends under the sub-district is: described MCE sends the control signaling of carrying the resource division situation by the M2 interface to eNB.
Described MCE also carries the information relevant with MCCH by the M2 interface to the control signaling that eNB sends, and the described information relevant with MCCH comprises one or more in the following information: the relevant Modulation and Coding Scheme of MBSFN sub-frame information, business and control information at correspondence relationship information, MBSFN area identification information, MCCH repetition period and the modification cycle of the size of MCCH message, business and MCCH, MCCH place.
This system also comprises UE,
Described eNB also is used for the resource allocation information at system message transmission MCCH;
Described UE is used for receiving system message on BCCH, and according to the resource allocation information of MCCH in the system message, receives required MCCH information in corresponding radio resource.
Be described in further detail below in conjunction with the enforcement of specific embodiment technical scheme.
Embodiment one
Present embodiment is described the situation of a plurality of MBSFN region overlappings among the identical MCE, be to comprise a plurality of MBSFN zone in the sub-district, and described a plurality of MBSFN zone belongs to same MCE, Fig. 3 is that the embodiment of the invention one is the method flow schematic diagram of MCCH distributing radio resource, as shown in Figure 3, this method comprises:
Step 301: a plurality of MBSFN zone that overlaps in the sub-district belongs to identical MCE.
Here, a plurality of MBSFN zone that overlaps belongs to identical MCE and refers to that promptly the corresponding MCE ID in MBSFN zone is identical.
Step 302: described MCE is a plurality of MBSFN area dividing Radio Resources in the sub-district, and sends control signaling to eNB by the M2 interface, in the control signaling, comprise among the eNB and transmit relevant resource allocation information with MBSFN, and other information relevant with MCCH.
Here, MCE is that a plurality of MBSFN area dividing Radio Resources in the sub-district refer to divide the Radio Resource among the eNB.
The described information relevant with MCCH comprises one or more of following information: the Modulation and Coding Scheme that correspondence relationship information, MBSFN area identification information (MBSFN ID), MCCH repetition period and the modification cycle of the size of MCCH message, business and MCCH, MBSFN sub-frame information, business and the control information at MCCH place are correlated with etc.
Step 303:eNB is the corresponding MCCH distributing radio resource in a plurality of MBSFN zone according to the control signaling of receiving.
Step 304:eNB sends the resource allocation information of MCCH in system message.
Described system message is a SIB13 message, and described MCCH and MBSFN zone are one to one, and (User Equipment UE) can judge corresponding M CCH according to the MBSFN ID in the system message to subscriber equipment.
Step 305:UE is receiving system message on BCCH, according to the resource allocation information of MCCH in the system message, receives required MCCH information in corresponding radio resource.
Described required MCCH information is meant the information on the MCCH that comprises the professional control information corresponding of MBMS that UE need receive.
As can be seen, under the situation of a plurality of MBSFN region overlappings that the technical scheme of embodiment one can be in identical MCE, be a plurality of MCCH allocation radio resources, UE reads corresponding M CCH as required, thereby avoided a plurality of MCCH resource allocation conflicts in the overlapping region, realized the fair and reasonable of MCCH resource distribution.
Embodiment two
Present embodiment is at a plurality of MBSFN region overlappings among the different MCE, and do not exist certain MCE zone to comprise the situation in other MCE zones fully, Fig. 4 is that the embodiment of the invention two is the method flow schematic diagram of MCCH distributing radio resource, and as shown in Figure 4, this method comprises:
Step 401: a plurality of MBSFN zone in the sub-district belongs to different MCE, and neither one MCE can comprise other MCE.
Fig. 5 is the distributed schematic diagrames of the embodiment of the invention two MCE, and 3 MCE are arranged among Fig. 5, and 3 MCE have the subregion to overlap, but neither one MCE can comprise other MCE.
Step 402: select a MCE as initial MCE, described MCE is corresponding MBSFN area dividing Radio Resource.
Here, initial MCE can be minimum or the highest or MCE at random of MCE ID sequence number of MCE ID sequence number, but is not limited to above-mentioned MCE.
General, considering that a plurality of MCE need hold consultation to allocation of radio resources, initial MCE can select at random.
Step 403: described MCE sends to other MCE with the Radio Resource dividing condition.
Other MCE are meant all MCE except that sending MCE, the wireless resource information of dividing can be by the transmission of control signaling, and described control letter signaling can include but not limited to following signaling: system message, MAC CE (control element), M2/M3 interface message, L1/2 layer configuration signal.
Need to prove generally there is not interface between the different MCE, the negotiation between the MCE need be controlled by the network element among the EPC, and the network element among the described EPC includes but not limited to: MME, MBMS GW or BM-SC.
Step 404: other MCE respond the Radio Resource dividing condition that MCE described in the step 403 sends, and judge whether to accept, if forward step 405 to; Otherwise, turn to step 409.
Step 405: described MCE sends control signaling to eNB by the M2 interface, comprises the situation of in the step 402 Radio Resource being divided in the control signaling.
The situation that Radio Resource is divided includes but not limited to: the MBSFN sub-frame information at MBSFN area I D information, MCCH repetition period and modification cycle, MCCH place etc.
The control signaling generally also comprises the information that other are relevant with MCCH, and the described information relevant with MCCH comprises one or more of following information: the Modulation and Coding Scheme that correspondence relationship information, MBSFN area identification information, MCCH repetition period and the modification cycle of the size of MCCH message, business and MCCH, MBSFN sub-frame information, business and the control information at MCCH place are correlated with etc.
Need to prove that MCE also can be refused by other MCE in the scheme that is divided according to system's setting, promptly divide under the situation of failure, do repeatedly to attempt,, forward step 409 again to if repeatedly all do not accepted by other MCE.
After step 406:eNB receives the control signaling of MCE, be the MCCH distributing radio resource according to the information of wherein carrying.
Step 407:eNB sends the resource allocation information of MCCH in system message.
Described system message is SIB 13 message, and described MCCH and MBSFN zone are one to one, and subscriber equipment (UE, User Equipment) can be judged corresponding M CCH according to the MBSFN ID in the system message.
Step 408:UE is receiving system message on BCCH, according to the configuration information of MCCH in the system message, receives required MCCH information in corresponding radio resource.
Step 409: judge whether to also have untreated MCE, if enter step 410; Otherwise, turn to step 411.
Described untreated MCE is meant the MCE that does not also carry out resource division, does not comprise the MCE of resource division failure.
410: need determining the MCE of processing, is corresponding MBSFN area dividing Radio Resource by described MCE, returns step 403 afterwards.
Here, other MCE that are untreated are followed successively by the Radio Resource that corresponding MBSFN area dividing is not assigned with as yet, and described can be according to following order successively, but is not limited to following order: according to the ascending order of MCE ID or descending or the selection at random of MCE ID.
Step 411: network side is the corresponding MCCH resource allocation in MBSFN zone among the MCE of all divide resource failures.
Here, described network side can be the network element among the EPC, as MME, described resource allocation can be a fixed allocation, as the surplus resources that can be used for MCCH among the eNB is averaged distribution, perhaps also can be distribution according to need, as distribute the resource of corresponding size according to the size of each MCCH information.
For helping to understand the negotiations process between the MCE in the foregoing description two, carry out applicating example below:
Fig. 6 is the embodiment of the invention two applicating example schematic diagrames, supposes to have three MCE, and selecting MCE1 is initial MCE, specifically comprises:
1, MCE1 requires distributes resource blocks R1, R2, and R3 sends indication information to MCE2 and MCE3;
2, MCE2 response MCE1 information: accept;
3, MCE3 response MCE1 information: accept;
4, MCE2 Resources allocation R4, R5 sends indication information to MCE1 and MCE3;
5, MCE3 Resources allocation R6 sends indication information to MCE1 and MCE2;
6, MCE1 response MCE2 information: accept R4, refusal R5;
7, MCE3 response MCE2 information: accept;
8, MCE2 response MCE3 information: accept;
9, MCE1 response MCE3 information: accept;
In the above-mentioned steps 6, MCE1 response MCE2 information: accept R4, refusal R5, MCE2 other resources of sub-distribution more then, as R4, R7, and send indication information to other MCE.
Embodiment three
Present embodiment is at a plurality of MBSFN region overlappings among the different MCE, and exist certain MCE zone to comprise the situation in other MCE zones fully, Fig. 7 is that the embodiment of the invention three is the method flow schematic diagram of MCCH distributing radio resource, and as shown in Figure 7, this method comprises:
Step 701: a plurality of MBSFN zone in the sub-district belongs to different MCE, and one of them MCE can comprise other MCE.
Fig. 8 is the distributed schematic diagrames of the embodiment of the invention three MCE, and 3 MCE are arranged among Fig. 8, and the scope maximum of MCE1 has wherein comprised the scope of MCE2 and MCE3.
Step 702: the MCE that selects scope maximum in the step 701 is as main MCE (master MCE), and master MCE is that the MCCH in the MBSFN zone of correspondence divides Radio Resource.
Described distributing radio resource is meant the Radio Resource that distributes eNB;
Step 703:master MCE sends control signaling to eNB by the M2 interface, comprises the dividing condition to Radio Resource in the control signaling.
Dividing condition to Radio Resource includes but not limited to: the MBSFN sub-frame information at MBSFN area I D information, MCCH repetition period and modification cycle, MCCH place etc.
General, described control signaling also comprises among the eNB transmits relevant resource allocation information and other information relevant with MCCH with MBSFN, and the described information relevant with MCCH comprises one or more of following information: the Modulation and Coding Scheme that correspondence relationship information, MBSFN area identification information, MCCH repetition period and the modification cycle of the size of MCCH message, business and MCCH, MBSFN sub-frame information, business and the control information at MCCH place are correlated with etc.
After step 704:eNB receives the control signaling of MCE, be the MCCH distributing radio resource according to the information of wherein carrying.
Step 705:eNB sends the resource allocation information of MCCH in system message.
Described system message is a SIB13 message; Described MCCH and MBSFN zone are one to one, and subscriber equipment (UE, User Equipment) is judged corresponding M CCH according to the MBSFN ID in the system message.
Step 706:UE is receiving system message on BCCH, according to the configuration information of MCCH in the system message, receives required MCCH information in corresponding radio resource.
Described required MCCH information is meant the information on the MCCH that comprises the professional control information corresponding of MBMS that UE need receive.
Step 707: judge whether other MCE in addition, if then turn to step 208, otherwise flow process finishes.
Step 708: other MCE are followed successively by corresponding MBSFN area dividing Radio Resource.
Described other MCE are meant all MCE except that master MCE; Described distributing radio resource successively is meant the Radio Resource that distributes eNB; Described Radio Resource is meant the surplus resources except that master MCE distributing radio resource; Described being meant successively according to following order, but be not limited to following order: according to other the ascending order of MCE ID, perhaps the descending of other MCE ID is perhaps selected in other MCE at random.
Step 709: other MCE send control signaling to eNB by the M2 interface, comprise the situation of dividing Radio Resource in the step 708 in the control signaling.
The situation of described division Radio Resource includes but not limited to: the MBSFN sub-frame information at MBSFN area I D information, MCCH repetition period and modification cycle, MCCH place etc.
Described control signaling comprises among the eNB transmits relevant resource allocation information with MBSFN, and other information relevant with MCCH; The described information relevant with MCCH comprises one or more of following information: the Modulation and Coding Scheme that correspondence relationship information, MBSFN area identification information, MCCH repetition period and the modification cycle of the size of MCCH message, business and MCCH, MBSFN sub-frame information, business and the control information at MCCH place are correlated with etc.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (16)
1. one kind is the method for multicast control channel distributing radio resource, it is characterized in that, this method comprises:
Comprise a plurality of multimedia broadcast multi-broadcasting business single frequency network MBSFN zone in the sub-district, and described a plurality of MBSFN zone belongs to same many sub-districts/multicast coordination entity MCE, and the MCE under then described a plurality of MBSFN zone carries out Radio Resource to described a plurality of MBSFN zone and divides; Comprise a plurality of MBSFN zone in the sub-district, and described a plurality of MBSFN zone belongs to different MCE, then described different MCE carries out Radio Resource to corresponding M BSFN zone through consultation and divides;
MCE sends to eNB under the described sub-district with the Radio Resource dividing condition, and described eNB is the corresponding multicast control channel MCCH distributing radio resource in described a plurality of MBSFN zone according to MCE to the dividing condition of Radio Resource.
2. method according to claim 1 is characterized in that, a plurality of MBSFN zone that comprises in the described sub-district is static region or semi-static zone.
3. method according to claim 1 is characterized in that, described different MCE carries out Radio Resource to corresponding M BSFN zone through consultation and is divided into: consulting between the MCE successfully, is corresponding M BSFN region allocation Radio Resource according to negotiation result then; Consult failure between the MCE, then the managed network element by other carries out the Radio Resource division to corresponding MBSFN zone.
4. according to each described method of claim 1 to 3, it is characterized in that described different MCE carries out Radio Resource to corresponding M BSFN zone through consultation and is divided into: described different MCE holds consultation by the network element among the block core EPC of evolution,
Network element among the described EPC is mobile management entity MME and/or multimedia broadcast multi-broadcasting business gateway MBMS GW and/or BroadCast MultiCast Service center BM-SC.
5. according to each described method of claim 1 to 3, it is characterized in that described Radio Resource dividing condition comprises: repetition period, the skew of radio frames, modification cycle, the subframe position of carrying MCCH.
6. according to each described method of claim 1 to 3, it is characterized in that described MCE with the eNB that the Radio Resource dividing condition sends under the sub-district is: described MCE sends the control signaling of carrying the resource division situation by the M2 interface to eNB.
7. method according to claim 6, it is characterized in that, described control signaling is also carried the information relevant with MCCH, and the described information relevant with MCCH comprises one or more in the following information: the relevant Modulation and Coding Scheme of MBSFN sub-frame information, business and control information at correspondence relationship information, MBSFN area identification information, MCCH repetition period and the modification cycle of the size of MCCH message, business and MCCH, MCCH place.
8. method according to claim 1 is characterized in that, after eNB was the corresponding MCCH distributing radio resource in described a plurality of MBSFN zone, this method also comprised:
ENB sends the resource allocation information of MCCH in system message;
UE is receiving system message on BCCH, and according to the resource allocation information of MCCH in the system message, receive required MCCH information in corresponding radio resource.
9. one kind is the system of multicast control channel distributing radio resource, it is characterized in that, this system comprises: MCE and eNB; Wherein,
Described MCE is used for comprising in the sub-district a plurality of MBSFN zone, and described a plurality of MBSFN zone is carried out Radio Resource to described a plurality of MBSFN zone and divided when all belonging to described MCE; And comprise a plurality of MBSFN zone in the sub-district, and described a plurality of MBSFN zone is divided by consulting that with other MCE Radio Resource is carried out in corresponding M BSFN zone when belonging to the different MCE that comprises described MCE; And be used for the Radio Resource dividing condition is sent to eNB under the described sub-district;
Described eNB, being used for according to MCE is the corresponding MCCH distributing radio resource in described a plurality of MBSFN zone to the dividing condition of Radio Resource.
10. system according to claim 9 is characterized in that, a plurality of MBSFN zone that comprises in the described sub-district is static region or semi-static zone.
11. system according to claim 9, it is characterized in that, described MCE is divided into by consulting that with other MCE Radio Resource is carried out in corresponding M BSFN zone: described MCE and other MCE consult successfully, are corresponding M BSFN region allocation Radio Resource according to negotiation result then; Described MCE and other MCE consult failure, and then the managed network element by other carries out the Radio Resource division to corresponding MBSFN zone.
12., it is characterized in that described different MCE carries out Radio Resource to corresponding M BSFN zone through consultation and is divided into according to each described system of claim 9 to 11: described different MCE holds consultation by the network element among the block core EPC of evolution,
Network element among the described EPC is mobile management entity MME and/or multimedia broadcast multi-broadcasting business gateway MBMS-GW and/or BroadCast MultiCast Service center BM-SC.
13., it is characterized in that the Radio Resource dividing condition that the eNB of described MCE under described sub-district sends comprises according to each described system of claim 9 to 11: repetition period, the skew of radio frames, modification cycle, the subframe position of carrying MCCH.
14., it is characterized in that described MCE with the eNB that the Radio Resource dividing condition sends under the sub-district is according to each described system of claim 9 to 11: described MCE sends the control signaling of carrying the resource division situation by the M2 interface to eNB.
15. system according to claim 14, it is characterized in that, described MCE also carries the information relevant with MCCH by the M2 interface to the control signaling that eNB sends, and the described information relevant with MCCH comprises one or more in the following information: the relevant Modulation and Coding Scheme of MBSFN sub-frame information, business and control information at correspondence relationship information, MBSFN area identification information, MCCH repetition period and the modification cycle of the size of MCCH message, business and MCCH, MCCH place.
16. system according to claim 9 is characterized in that, this system also comprises UE,
Described eNB also is used for the resource allocation information at system message transmission MCCH;
Described UE is used for receiving system message on BCCH, and according to the resource allocation information of MCCH in the system message, receives required MCCH information in corresponding radio resource.
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