CN102065373B - Method for configuring single frequency network area and system thereof - Google Patents

Abstract

The invention discloses a method for configuring a single frequency network area, which is used for realizing dynamic or semi-static configuration of the single frequency network area. The method comprises the following steps: a multicast coordination entity MCE transmits a fourth message for resource coordination to a multimedia broadcast multicast service (MBMS) wireless resource application entity in a periphery region of the single frequency network area; and the MBMS wireless resource application entity restrict to use the wireless resource which is the same as the single frequency network area according to the received fourth message for resource coordination. The invention also discloses a communication system, the MCE, the MBMS wireless resource application entity and user equipment.

Description

The method and system of configuring single-frequency network area

Technical field

The present invention relates to the communications field, particularly the method and system of configuring single-frequency network area.

Background technology

Along with the development of radio network technique, develop into Long Term Evolution (Long Term Evolution, LTE) system from universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS).LTE is the evolution standard based on the UMTS network that 3GPP organizes to set up.LTE has improved the transmittability of physical layer greatly, reduces the complexity of system.

Wherein, multimedia broadcasting and multicast services technology (Multimedia Broadcast/Multicast Service, MBMS) also are greatly improved.MBMS is introduced in the R6 of UMTS version first, utilizes the network of UMTS that the MBMS service is provided.MBMS refers to, by sharing a transmission link multimedia data broadcast or being multicasted to portable terminal.MBMS is divided into two kinds of mode of operations of broadcast and multicast.Wherein, broadcast mode refers to, with multi-medium data from a service source by unidirectional inner all subscriber equipmenies (User Equipment, UE) in broadcast service zone that send to.UE under this pattern need not registration can receive broadcast data, and this broadcast mode is save radio resources effectively, but can't guarantee the integrality of the data that UE receives.Multicast pattern and broadcast mode are very similar, but the UE that can receive multi-case data in the multicast pattern is only limited to registered UE that should business.When the UE that receives multi-case data in the residential quarter is very few, can further select the radio bearer mode of point-to-point (Point To Point, PTP) to send multi-case data, to reduce the interference to other Radio Link.

Under existing UMTS system, by the continuity of core net (Core Network, CN) control UE MBMS business when cell reselection or the cell update.

When radio network technique developed into the LTE system, MBMS also had been varied to enhanced multimedia broadcast and multicast services (Enhanced-MBMS, E-MBMS).Very large variation has occured in the framework of E-MBMS on the basis of MBMS, one of them is to have introduced single frequency network (Single frequency network, SFN) concept, it requires some continuous evolution base stations (Evolved Node B, eNB) in the identical time, same wireless resource with same frequency band sends identical content.The zone that these continuous eNB consist of is called as single-frequency network area (SFN area).

For the collocation method of SFN area, there is not at present clear and definite scheme.

Summary of the invention

The embodiment of the invention provides the method and system of configuration SFN area, is used for realizing the dynamic or semi-static configuration of SFN area.

A kind of method that disposes outer peripheral areas may further comprise the steps:

Multicast coordination entity (MCE) sends the 4th message that is used for resource coordination to the MBMS radio resource utilization entity in the outer peripheral areas of single-frequency network area; Described the 4th message for resource coordination comprises subcarrier information and/or the band information of described single-frequency network area;

Described MBMS radio resource utilization entity is according to the 4th message that is used for resource coordination of receiving, the Radio Resource identical with described single-frequency network area used in restriction.

A kind of method that disposes outer peripheral areas may further comprise the steps:

Multicast coordination entity (MCE) sends Indication message to the MBMS radio resource utilization entity that is in the single-frequency network area edge, and described Indication message comprises that needs add the sign of the MBMS radio resource utilization entity of outer peripheral areas;

The MBMS radio resource utilization entity at described edge sends the 4th message that is used for resource coordination according to described message to corresponding MBMS radio resource utilization entity, makes its restriction use the Radio Resource identical with described single-frequency network area; Perhaps

The MBMS radio resource utilization entity at described edge makes corresponding MBMS radio resource utilization physical constraints use the Radio Resource identical with described single-frequency network area according to described message trigger Inter-Cell Interference Coordination process.

A kind of subscriber equipment is known about the method for single-frequency network area position, be may further comprise the steps:

MBMS radio resource utilization entity knows that this entity is in the single-frequency network area edge;

MBMS radio resource utilization entity sends rim condition information to subscriber equipment.

A kind of subscriber equipment is known about the method for single-frequency network area position, be may further comprise the steps:

Subscriber equipment receives the rim condition information that MBMS radio resource utilization entity sends;

Subscriber equipment is known the MBMS radio resource utilization entity that belongs to the edge according to the rim condition information of receiving.

A kind of subscriber equipment is known about the method for single-frequency network area position, be may further comprise the steps:

MBMS radio resource utilization entity obtains the single-frequency network area relevant information of adjacent MBMS radio resource utilization entity by MCE or adjacent MBMS radio resource utilization entity, and this single-frequency network area relevant information is sent to subscriber equipment;

Described subscriber equipment analyzes the MBMS radio resource utilization entity that belongs to the edge according to the single-frequency network area relevant information of receiving.

A kind of MBMS radio resource utilization entity comprises:

Receiving element is used for receiving the message that MCE sends, and perhaps further receives the single-frequency network area relevant information that adjacent MBMS radio resource utilization entity sends;

Control unit is used for knowing that according to the message of described single-frequency network area relevant information or MCE transmission this entity is in the single-frequency network area edge, is set to rim condition with the single-frequency network area location status;

Transmitting element is used for sending rim condition information to subscriber equipment.

A kind of subscriber equipment comprises:

Receiving element be used for to receive the single-frequency network area location status information of this entity of the single-frequency network area relevant information of the adjacent MBMS radio resource utilization entity that ownership MBMS radio resource utilization entity sends or transmission;

Analytic unit is used for analyzing the MBMS radio resource utilization entity that belongs to the edge according to described single-frequency network area relevant information, perhaps knows the MBMS radio resource utilization entity that belongs to the edge according to the single-frequency network area location status information of described entity;

Transmitting element sends the second message that is used for request expansion single-frequency network area when being used for knowing the MBMS radio resource utilization entity that belongs to the edge.

Determine and control foundation, expansion and the contraction of SFN area in the present embodiment by the MCE of concrete management MBMS business, be conducive to unified management and the distribution of SFN area Radio Resource.

Present embodiment provides the method for dynamic or semi-static expansion SFN area, guarantees the continuity of UE MBMS business when mobile, makes UE receive the signal of enhancing, improves reception.

Present embodiment also provides the method for dynamic or semi-static contraction SFN area, can save Internet resources.

Present embodiment provides the various configurations guard method of area, the co-channel interference of minimizing and SFN area, the reception of raising UE.

Present embodiment provides the method for setting up and dispose SFN area, realizes the flexible configuration of SFN area.

The method that present embodiment provides MBMS radio resource utilization entity to know and notify this entity of UE to be in SFN area edge is convenient to dispose SFN area.

Description of drawings

Fig. 1 is the structural representation of communication system in the embodiment of the invention;

Fig. 2 is the structural representation of communication system among the UMTS in the embodiment of the invention;

Fig. 3 is the structural representation of communication system in the LTE system in the embodiment of the invention;

Fig. 4 is the structural representation of communication system when MCE and the same entity of eNB in the LTE system in the embodiment of the invention;

Fig. 5 is the structural representation of MCE in the embodiment of the invention;

Fig. 6 is the structural representation of eNB in the embodiment of the invention;

Fig. 7 is the structural representation of UE in the embodiment of the invention;

Fig. 8 is the method flow diagram of Dynamic Establishing SFN area in the embodiment of the invention;

Fig. 9 is according to the method flow diagram of configuration information dynamic-configuration SFN area in the embodiment of the invention;

Figure 10 is the main method flow chart of dynamic expansion SFN area in the embodiment of the invention;

Figure 11 is the concrete grammar flow chart of the first dynamic expansion SFN area in the embodiment of the invention;

Figure 12 is the concrete grammar flow chart of the second dynamic expansion SFN area in the embodiment of the invention;

Figure 13 is the eNB position view during dynamic expansion SFN area in the embodiment of the invention;

Figure 14 is the concrete grammar flow chart of the third dynamic expansion SFN area in the embodiment of the invention;

Figure 15 is the main method flow chart of Dynamic contraction SFN area in the embodiment of the invention;

Figure 16 is the concrete grammar flow chart of the first Dynamic contraction SFN area in the embodiment of the invention;

Figure 17 is the concrete grammar flow chart of the second Dynamic contraction SFN area in the embodiment of the invention;

Figure 18 is the eNB position view during Dynamic contraction SFN area in the embodiment of the invention;

Figure 19 is the concrete grammar flow chart of the third Dynamic contraction SFN area in the embodiment of the invention.

Embodiment

In order to realize the dynamic or semi-static configuration of SFN area, mainly control and determine dynamic or semi-static foundation, expansion and the contraction of SFN area in the present embodiment by MCE.Present embodiment describes as an example of Dynamic Establishing, expansion and contraction SFN area example, and the method for semi-static configuration SFN area can be with reference to the method for dynamic-configuration.

For configuration mode, generally include static state, semi-static and dynamic.For the configuration mode of SFN area, static configuration refers to that the eNB of SFN area inside fixes, and is determined by default configuration information.Dynamic-configuration refers to that the eNB of SFN area inside can be according to the movement of UE and dynamic the variation.Semi-static configuration is between dynamic and static state, also allows the variation of SFN area when allowing configuration, does not have strict difference between itself and the dynamic-configuration.

The reason that causes SFN area expansion or shrink has multiple, as a kind of be UE registration or to nullify MBMS professional, be that UE carries out MBMS radio resource utilization entity and switches such as another kind.Generally, because UE carries out that the zone is switched or the gravity treatment meeting causes the switching of MBMS radio resource utilization entity.

MBMS radio resource utilization entity comprises eNB, (the Radio Network Controller of the radio network controller among the UMTS among the LTE in the present embodiment, RNC) or the control RNC (CRNC) in high-speed packet access (High-Speed Packet Access Plus, HSPA+) system.

The zone comprises residential quarter or tracking area (Tracking area, TA) in the LTE system in the present embodiment, the residential quarter among the UMTS, Route Area (Routing area, RA) or lane place (Location area, LA).

Accordingly, area update message comprises cell update message (Cell Update) or tracing section updating message (the Tracking Area Update in the LTE system in the present embodiment, TAU), the cell update message among the UMTS, Routing Area Update message or location area updating message.

SFN area comprises the edge (abbreviation edge) of SFN area inside and the non-edge (being called for short non-edge) of SFN area inside.The edge refers to: be in the MBMS radio resource utilization entity among the SFN area, exist at least a MBMS radio resource utilization entity that is in SFN area outside to be adjacent, such MBMS radio resource utilization entity has consisted of the edge of SFN area.Non-edge refers to: be in the MBMS radio resource utilization entity among the SFN area, and its whole adjacent MBMS radio resource utilization entities all to be in SFN area inner, such MBMS radio resource utilization entity has consisted of the non-edge of SFN area.In the present embodiment, the MBMS radio resource utilization entity that is in the edge is called edge MBMS radio resource utilization entity, and the MBMS radio resource utilization entity that is in non-edge is called non-edge MBMS radio resource utilization entity.

Outer peripheral areas (guard area) refers in the zone beyond the SFN area, the zone that all MBMS radio resource utilization entities adjacent with SFN area consist of, and these MBMS radio resource utilization entities are adjacent MBMS radio resource utilization entities of edge MBMS radio resource utilization entity.In the present embodiment, the MBMS radio resource utilization entity of this intra-zone is called peripheral MBMS radio resource utilization entity.

Present embodiment provides the method for multiple Dynamic Establishing or configuration SFN area, method such as a kind of Dynamic Establishing SFN area is: MCE is configured the MBMS radio resource utilization entity of needs according to the result of each MBMS radio resource utilization entity statistics counting, it is professional to make it transmit at one time same MBMS with identical frequency band, sets up SFN area.Such as another kind of method be: MCE regularly is configured Dynamic Establishing, expansion and contraction SFN area to the MBMS radio resource utilization entity of appointment in the configuration information according to the configuration information of this locality.

Present embodiment provides the method for multiple dynamic expansion SFN area, such as first method is: MCE judges whether to expand SFN area according to the result of each MBMS radio resource utilization entity statistics (counting).Be that UE initiatively sends extended request message when finding to belong to edge MBMS radio resource utilization entity such as second method, MCE judges whether to expand SFN area according to this message.As the third method be UE carry out regional gravity treatment or zone switch after sending zone updating message initiatively, MCE judges whether to expand SFN area according to this message.

Present embodiment provides the method for multiple Dynamic contraction SFN area, such as a kind of method is: MCE judges whether to shrink SFN area according to the result of each MBMS radio resource utilization entity statistics.Such as another kind of method be: the message that initiatively sends according to UE judges whether to shrink SFN area.The message that UE initiatively sends is carried out the area update message that comprises source MBMS radio resource utilization entity that sends after MBMS radio resource utilization entity switches such as: UE.Such as another method be: according to UE initiatively send leave request message or de-registration request message judges whether to shrink SFN area.

The below mainly describes as an example of the LTE system example.In the LTE system of present embodiment, MBMS radio resource utilization entity refers to eNB, and the zone refers to the residential quarter, and the corresponding residential quarter of eNB is so the switching of eNB just can occur when UE carries out cell reselection or residential quarter switching.

Referring to Fig. 1, communication system comprises upstream node, MCE, eNB and the UE of eNB in the present embodiment.The upstream node of this eNB comprises mobile management entity (Mobile Management Entiey, MME), user entity (User Plane Entiey, UPE), broadcast multicast service center (broadcast multicast service center, BM-SC) and (Operation﹠amp of operation maintenance center; Maintenance Center, OMC) etc.For UMTS, this communication system comprises Serving GPRS Support Node (Serving GPRS Support Node, SGSN), Gateway GPRS Support Node (Gateway GPRS Support Node, GGSN), MCE, RNC and BM-SC, referring to shown in Figure 2, wherein, SGSN is corresponding to MME, GGSN is corresponding to UPE, and RNC is corresponding to eNB.The upstream node of eNB is used for the logic entity of data stream management for being used for MBMS user plane entity (UPE for MBMS, mUPE) in the present embodiment, the head compression of MBMS, and the distribution of MBMS content-data, and be the terminal point of synchronous protocol.MUPE is a logic entity, for example can be in UPE.

The upstream node of eNB is according to the message that joins request of described eNB or described MCE transmission, the eNB that needs is added single-frequency network area adds the contents distribution tree, and/or, according to the de-registration request message of described eNB or described MCE transmission, needs are left eNB deletion from the contents distribution tree of single-frequency network area.

MCE is a logic module, it can be an independently node, referring to shown in Figure 3, also can be in existing network entity, existing network entity such as MME/UPE, BM-SC, OMC or eNB etc., wherein, OMC can be connected with MCE, as shown in Figure 3, also can be connected with other entities such as MME, be connected to example with OMC and MCE in the present embodiment and describe.Be combined into the network structure of an entity referring to MCE shown in Figure 4 and eNB.In the present embodiment, describe as an isolated node as example take MCE.MCE control and distribute the MBMS Radio Resource according to the message that receives from eNB or local configuration information, determines to set up, expansion or shrink SFN area, and the extinction of SFN area can be thought the limit of shrinking.MCE need to make the eNB of SFN area inside professional with the same MBMS of the frequency band transmission of system at same time, make the eNB of SFN area inside add the contents distribution tree, and send information of radio resource allocation (comprising subcarrier information and/or band information) etc. to it.MCE can be directly or indirectly and eNB carry out alternately.Refer to that directly for example, MCE and MME belong to an entity, or when being isolated node and the eNB direct interaction.Refer to that indirectly for example, when MCE and BM-SC belonged to an entity, MCE and eNB need to be undertaken by MME alternately.

MCE can send to eNB with information of radio resource allocation by message or file, perhaps sends download address and file identification to eNB, and indication eNB downloads information of radio resource allocation.Carrying information of radio resource allocation take form of message in the present embodiment describes as example.

MCE also needs to make edge eNB to keep being prepared as the state of UE service, if when finding edge eNB at least one UE service, need expansion SFN area, guarantees the MBMS business continuance when UE moves.MCE still needs to make non-edge eNB to keep being at least the state of a UE service, if when finding that non-edge eNB and adjacent eNB thereof are no longer served for UE, needs to shrink SFN area, can save Internet resources.MCE sends corresponding message according to the attribute of judged result and SFN area to each eNB.MCE has SFN area location status information or the guard area location status information of eNB, SFN area location status information comprises edge and non-edge, also there is the UE quantity of having registered the MBMS business in each eNB coverage, and the sign of the adjacent eNB of each eNB.

ENB represents a plurality of eNB.ENB makes various responses and returns response message according to the message that MCE sends.The eNB of SFN area inside sends the MBMS business datum with the same wireless resource in the identical frequency band to the UE that has registered the MBMS business simultaneously.The eNB of guard area inside will limit or stop using the Radio Resource identical with SFN area.Can directly carry out alternately by X2 interface between adjacent two eNB, eNB can obtain the SFN area relevant information of adjacent eNB, comprise the information of radio resource allocation (comprising subcarrier information and/or frequency band) of SFN area location status information, SFN area sign and service identifiers, SFN area etc., can judge the position of adjacent eNB by SFN area relevant information, in SFN area edge, non-edge or outside (being that guard area is inner).ENB is interference coordination (Inter-cell interference considerations between triggering cell as required, ICIC) process or transmission resource coordination Indication message make the eNB of guard area inside will limit or stop using the Radio Resource identical with SFN area.When triggering the ICIC process, can be undertaken alternately by direct or indirect mode between two eNB.Wherein, the ICIC process comprises that expression is used for the mark of SFN transmission.

UE (comprises MBMS point-to-multipoint control channel (MBMS point-to-multipoint Control Channel by monitoring control channel, MCCH) or Broadcast Control Channel (Broadcast Control Channel, BCCH)) the SFN area relevant information of acquisition attributive eNB and adjacent eNB, it can be SFN area positional information, also can be other SFN area relevant information, UE analyzes SFN area positional information according to other SFN area relevant information.UE is known when belonging to edge eNB to MCE request expansion SFN area, perhaps after carrying out cell reselection or cell update, send cell update message to MCE, cell update message can comprise the sign of source eNB, and MCE can determine expansion and shrink SFN area according to cell update message.

Referring to Fig. 5, MCE comprises receiving element 501, determining means 502, determining unit 503, memory cell 504 and transmitting element 505 in the present embodiment.

Memory cell 504 has configuration information, SFN area relevant information, also had sign, SFN area or the guard area location status information of each eNB, the corresponding registration UE quantity of MBMS business and sign of adjacent eNB etc.Each memory cell can be the storage mediums such as floppy disk, hard disk and tape in the present embodiment.

The various message that receiving element 501 external entities send, in the present embodiment, receive extended request message, the message with statistics, cell update message, login request message and relevant response message that eNB sends, receive the configuration information that other node sends, other node comprises BM-SC, MME and OMC.

Determining means 502 determines to set up, expands or shrinks SFN area according to message or the configuration information in the memory cell 504 that eNB sends.

Determining unit 503 determines to need to add or leave the eNB of single-frequency network area according to the decision of determining means 502; Register to mUPE, in the present embodiment be, send the message that joins request to mUPE and (or claim MBMS registration request, the MBMS registration request), request will need the eNB that adds SFN area to add the contents distribution tree, and it is set up with the data surface carrying of mUPE and to its transmission information of radio resource allocation, make its other eNB with SFN area inside professional with the same MBMS of identical frequency band transmission at same time; And to mUPE transmission de-registration request message, eNB deletion from the contents distribution tree of SFN area is left needs in request, and sends the message relevant with resource coordination to it, it is limited use the frequency band identical with described single-frequency network area; The relevant information of storage in the updated stored unit 504.

503 indications send various indications and request message to eNB and mUPE to transmitting element 505 according to determining unit, comprise expansion Indication message, resource coordination Indication message, extended response message, cell update response message, the message that joins request and de-registration request message etc.

Referring to Fig. 6, eNB comprises receiving element 601, control unit 602, memory cell 603 and transmitting element 604 in the present embodiment.

Memory cell 603 has the sign of SFN area location status information and adjacent eNB etc.

Receiving element 601 receives extended request message, cell update message, login request message, de-registration request message that UE send, leaves request message and handover request message etc., and receive expansion Indication message that MCE sends, resource coordination Indication message, extended response message, cell update response message etc., further receive adjacent eNB and send SFN area location status information and SFN area relevant information etc.

Control unit 602 knows that according to the message of described single-frequency network area relevant information or MCE transmission this entity is in the single-frequency network area edge, and, the message that is used for active or sends according to MCE, statistics has been registered the UE quantity of MBMS business, indication transmitting element 604 sends the UE quantity of having registered the MBMS business to MCE, perhaps statistics has been registered the UE quantity of MBMS business and has been found that this quantity is greater than after 0, indication transmitting element 604 sends the expansion Indication message to adjacent eNB, and send information of radio resource allocation according to the indication of MCE to adjacent eNB, send the message that joins request to mUPE, request adds the contents distribution tree with adjacent eNB, sets up the data surface carrying with mUPE.

Transmitting element 604 sends various response messages according to the indication of control unit 602 to UE, sends SFN area location status information, SFN area relevant information by control channel, sends various message etc. to MCE.

Referring to Fig. 7, UE comprises receiving element 701, analytic unit 702, memory cell 703 and transmitting element 704 in the present embodiment.

The SFN area location status information of memory cell 703 store home eNB etc.

Receiving element 701 receives SFN area location status information, SFN area relevant information and the various response message that eNB sends.

Whether analytic unit 702 generates extended request message according to the information analysis that eNB sends; In the cell update message of carrying out generating after switch cell reselection or residential quarter with active eNB sign; Neighbor cell is measured, analyzed whether generate extended request message; And generate when needed login request message, nullify MBMS business request information etc.

Transmitting element 704 sends extended request message, cell update message, login request message, cancellation MBMS business request information and handover request message etc. according to the indication of analytic unit 702 to eNB.

Referring to Fig. 8, MCE is as follows according to the method flow of statistics Dynamic Establishing SFN area in the present embodiment:

Step 801:MCE sends the statistics instruction according to the configuration information of this locality to eNB, requires to have registered in the eNB statistics overlay area UE quantity of MBMS business.

Step 802:eNB carries out statistical operation after receiving the statistics instruction, and returns statistics to MCE.

The statistics instruction that MCE issues can also comprise cycle information, and eNB can report the UE quantity of having registered the MBMS business automatically according to cycle information later.

Whether step 803:MCE judges the statistics of receiving greater than 0, and request mUPE will add contents distribution tree (or claiming the MBMS multicast group) greater than the corresponding eNB of 0 statistics, set up the data surface carrying with mUPE.

Step 804:MCE sends information of radio resource allocation to eNB, makes the eNB of SFN area inside professional with the same MBMS of identical frequency band transmission at same time.

Step 805:MCE further sends SFN area relevant information to eNB, and this information can comprise SFN area location status information, and eNB is directly known and laid oneself open to SFN area edge or non-edge.

Perhaps MCE further sends the SFN area relevant information of its adjacent eNB to eNB, and the SFN area relevant information of eNB by adjacent eNB analyzes and lay oneself open to SFN area edge or non-edge.

Perhaps eNB and adjacent eNB are mutual, obtain the SFN area relevant information of adjacent eNB, and analyze and lay oneself open to SFN area edge or non-edge.

Step 806: edge eNB has registered the UE transmission SFN area location status information of MBMS business or the SFN area relevant information of transmission adjacent eNB in coverage, UE is known belonged to edge eNB, perhaps further know the SFN area location status information of adjacent eNB.

Referring to Fig. 9, MCE regularly is configured the eNB of appointment in the configuration information according to the configuration information of this locality in the present embodiment, realizes that the concrete grammar flow process of dynamic-configuration SFN area is as follows:

Step 901:MCE sets up SFN area according to the configuration information of this locality, eNB transmission wireless resource configuration in from the very first time to appointment, and send the message that joins request to mUPE, make the eNB of appointment add the contents distribution tree, and the data surface of foundation and mUPE carry.

MCE can repeatedly obtain configuration information from other node, and according to latest configuration information dynamic-configuration SFN area.

Step 902:MCE according to the configuration information of this locality at the second temporal extension SFN area, within this time, need the eNB that adds SFN area to send wireless resource configuration, and send the message that joins request to mUPE, request will need the eNB that adds SFN area to add the contents distribution tree, and the carrying of the data surface of foundation and mUPE.

Step 903:MCE shrinks SFN area according to the configuration information of this locality in the 3rd time, the eNB that leaves SFN area to the needs of appointment sends it and sends and remove radio-resource-configuration message, notify its termination that the MBMS business service is provided, and to mUPE transmission de-registration request message, eNB deletion from the contents distribution tree of SFN area is left needs in request.MCE can further send the resource coordination Indication message to the eNB that leaves, and makes its restriction use the frequency band identical with described single-frequency network area.

The second time can be identical with the 3rd time.

Referring to Figure 10: the main method flow process of MCE dynamic expansion SFN area is as follows in the present embodiment:

Step 1001:eNB sends message to MCE, comprises message, extended request message and cell update message with the UE quantity of having registered the MBMS business.

The message that step 1002:MCE sends according to eNB and with respect to the position of SFN area determines expansion SFN area, and determines to need to add the eNB of SFN area.The eNB that adds SFN area can be eNB and the part or all of adjacent eNB thereof that sends message.

Step 1003:MCE sends information of radio resource allocation to the eNB that needs add SFN area, and send the message that joins request to mUPE, request will need the eNB that adds SFN area to add the contents distribution tree, set up the data surface carrying with mUPE, make it transmit simultaneously same MBMS business with other eNB of SFN area inside with identical frequency band.

Referring to Figure 11, MCE is as follows according to the concrete grammar flow process of the as a result dynamic expansion SFN area of each eNB statistics counting in the present embodiment:

Step 1101:MCE sends with the message of adding up instruction to eNB according to the configuration information of this locality, requires to have registered in the eNB statistics overlay area UE quantity of MBMS business.

Step 1102:eNB carries out statistical operation after receiving the statistics instruction, and returns statistics to MCE.

The statistics instruction that MCE issues can also comprise cycle information, and eNB can report the UE quantity of having registered the MBMS business automatically according to cycle information.

Step 1103:MCE finds to be in statistics that the eNB of SFN area outside returns greater than determining expansion SFN area at 0 o'clock, send information of radio resource allocation to it, and send the message that joins request to mUPE, request should add the contents distribution tree by outside eNB, and the data surface carrying that makes this outside eNB foundation and mUPE, perhaps further send service identifiers, SFN area sign, modulation coding mode, the transmission mode of SFN, APN (Access Point Name, APN), Temporary Mobile Group Identity (Temporary Mobile Group Identity, TMGI), session identification (SESSION ID), MBMS data source address information and mUPE information etc.

Step 1104:MCE further adds SFN area with the adjacent eNB of the eNB of described outside.

Step 1105: the eNB that receives information of radio resource allocation returns response message to MCE.

MCE can send information of radio resource allocation to eNB, sends the message that joins request by the eNB that receives information of radio resource allocation to mUPE, and request adds the contents distribution tree, and the carrying of the data surface of foundation and mUPE.

When MCE does not receive the response message that eNB returns within the time of expection, can again send corresponding message.

The eNB (namely being in the eNB in the guard area after the renewal) that step 1106:MCE is in SFN area outside in the adjacent eNB of the eNB that adds SFN area sends the resource coordination Indication message, makes its restriction use the Radio Resource identical with SFN area.The resource coordination Indication message comprises the information of radio resource allocation of SFN area etc.Carry out this step and can reduce co-channel interference.

Perhaps, the eNB of MCE indication adding SFN area sends message to its adjacent peripheral eNB, makes the adjacent eNB restriction use the Radio Resource identical with SFN area.ENB is by the resource coordination Indication message or trigger the ICIC process, notifies its adjacent eNB restriction to use the Radio Resource identical with SFN area.ICIC comprises that expression is used for the mark of SFN transmission.

MCE behind the eNB that determine to need adds SFN area, can be first eNB in the guard area that is in after the renewal send the resource coordination Indication message, the eNB that adds SFN area to needs again sends information of radio resource allocation.Can before edge eNB MBMS transmission business, just limit or forbid like this Radio Resource that the eNB in the guard area uses, better reduce or avoid co-channel interference.

Present embodiment also provides a kind of implementation, in step 1101 to step 1104, the eNB that is in SFN area edge adds up the UE quantity of having registered the MBMS business in the overlay area, find that this quantity sent extended request message greater than 0 o'clock to MCE, edge eNB can be initiatively or the Indication message that sends according to MCE carry out statistical operation.MCE is according to receiving extended request message, and the part or all of adjacent eNB that is in SFN area outside in the adjacent eNB with this edge eNB adds SFN area, then continues step 1105.

Present embodiment provides a kind of implementation again, and to step 1103, it is outside to be in SFN area in step 1101, and when namely the eNB in the guard area received the registration request of UE transmission, it was professional to activate MBMS to the MCE request.After MCE receives request, to this eNB adding of major general SFN area, then continue step 1104.

Referring to Figure 12, MCE knows that according to UE the concrete grammar flow process of the extended request message dynamic expansion SFN area that sends when belonging to edge eNB is as follows in the present embodiment:

Step 1201:UE knows that by monitoring control channel attributive eNB is in SFN area edge.UE can be the SFN area location status information (being rim condition) that directly obtains eNB, perhaps obtains the SFN area relevant information of adjacent eNB, analyzes attributive eNB and is in SFN area edge.For example, in the SFN area relevant information of part adjacent eNB, do not comprise the service identifiers of this SFN area sign or UE registration, illustrate that described part adjacent eNB is outside at SFN area.

UE carries out knowing that attributive eNB is in SFN area edge after switch cell reselection or residential quarter, for example, referring to shown in Figure 13, shadow representation SFN area wherein, blank expression guard area.UE moves to eNB-1 from eNB-6.Perhaps, UE knows that attributive eNB is in SFN area edge after having registered the MBMS business.The below mainly moves to behind the eNB-1 as example take UE and describes.

Step 1202:UE measures neighbor cell, judges whether to exist the neighbor cell of coincidence measurement condition, if, then continue step 1203, otherwise termination process.Described measurement comprises Common Pilot Channel (Common Pilot Channel, CPICH) measurement, MBMS point multipoint message traffic channel (MBMS point-to-multipoint Traffic Channel, MTCH) measurement, error rate measurement, channel quality indication (Channel Quality Indication, CQI) measurement, load measure and priority measurement etc.

In the present embodiment, above-mentioned measuring condition is higher than UE and carries out cell reselection or the residential quarter measuring condition when switching, namely carry out before cell reselection or the residential quarter switching possible target eNB being added SFN area at UE, can guarantee the in the future MBMS business continuance when cell reselection or residential quarter switching of UE.

UE is execution in step 1202 not also, directly execution in step 1203.UE execution in step 1202 can the delayed delivery extended request message, namely postpones expansion SFN area, and can autotelic expansion SFN area, the saving Internet resources.

Step 1203:UE sends extended request message to eNB-1, and this extended request message comprises the sign of the eNB of coincidence measurement condition, and for example, the eNB of coincidence measurement condition has eNB-18 and eNB-2.

Step 1204:eNB-1 is transmitted to MCE with this extended request message.

Whether step 1205:MCE meets judgment condition according to the label detection eNB-18 in the extended request message and eNB-2, judgment condition comprises: whether exceed maximum SFN area, whether its load is less than default threshold value, whether belong to the eNB that allows to add SFN area in the local configuration information, whether do not belong to the eNB that forbids adding SFN area in the local configuration information.

If skips steps 1202, MCE can judge the adjacent eNB (being eNB-18, eNB-2 and eNB-16) of eNB-1.If MCE does not have the sign of the adjacent eNB of eNB-1, so, UE can comprise the sign of adjacent eNB in the extended request message of its transmission, comprise the sign into adjacent eNB when perhaps transmitting extended request message by eNB-1, and MCE judges identifying corresponding eNB.

Step 1206:MCE finds that eNB-18 and eNB-2 all meet judgment condition, so, MCE sends the expansion Indication message to eNB-18 and eNB-2, send information of radio resource allocation by this message, perhaps further comprise transmission mode, APN, TMGI, SESSION ID, MBMS data source address information and the mUPE information of service identifiers, single-frequency network area sign, modulation coding mode, SFN.

If eNB-18 and eNB-2 all do not meet judgment condition, then termination process.

Step 1207:eNB-18 and eNB-2 return expansion indication response message after receiving the expansion Indication message.

Step 1208:MCE sends extended response message to eNB-1.

Perhaps, in step 1206, MCE does not directly send the expansion Indication message to eNB-18 and eNB-2, and in step 1208, MCE sends the expansion Indication message by extended response message (also can be again to send Indication message) indication eNB-1 to eNB-18 and eNB-2, and this extended response message comprises the sign of eNB-18 and eNB-2.

Step 1209:eNB-1 sends extended response message to UE.

Step 1210:eNB-1 changes SFN area location status information into non-rim condition, and stops to send rim condition information to UE, also can further send non-rim condition information to UE.

ENB-1 also can change SFN area location status information into non-rim condition automatically after sending extended request message, if when not receiving extended response message within the time of expection, change SFN area location status information into rim condition again.

Step 1211:MCE sends the message that joins request to mUPE, and request mUPE adds the contents distribution tree with eNB-18 and eNB-2, and makes eNB-18 and eNB-2 set up data surface carrying with mUPE.

Perhaps send the message that joins request by the eNB-18 that receives the expansion Indication message and eNB-2 to mUPE, add the contents distribution tree, and the carrying of the data surface of foundation and mUPE.

Perhaps MCE is by extended response message (also can again send other Indication message), further indication eNB-1 sends the message that joins request to mUPE, request mUPE adds the contents distribution tree with eNB-18 and eNB-2, and makes the data surface carrying of eNB-18 and eNB-2 foundation and mUPE.

Step 1212:MCE sends the resource coordination Indication message to the eNB (being eNB-36, eNB-35, eNB-3 and eNB-33) that needs add guard area, by this message informing eNB-36, eNB-35, eNB-3 and eNB-33 restriction or ban use of the Radio Resource identical with SFN area, this resource coordination Indication message to comprise SFN area information of radio resource allocation and SFN area sign etc.

Perhaps, MCE sends the message relevant with resource coordination to eNB-36, eNB-35, eNB-3 and eNB-33 by expansion Indication message indication eNB-18 respectively with eNB-2.ENB-18 can or ban use of the Radio Resource identical with SFN area by resource coordination Indication message notice eNB-36, eNB-35, eNB-3 and eNB-33 restriction with eNB-2, perhaps by being used for ICIC notice eNB-36, eNB-35, eNB-3 and the eNB-33 of SFN transmission, this ICIC comprises the mark of sign SFN transmission.

Step 1213:eNB-36, eNB-35, eNB-3 and eNB-33 return the resource coordination response message to MCE.

In step 1202, the CPICH transmitting power that UE judges neighbor cell is during greater than the CPICH transmitting power of this residential quarter, the CPICH transmitting power of perhaps judging neighbor cell is greater than the CPICH transmitting power of this residential quarter and its difference during greater than default threshold value, the CPICH transmitting power of perhaps judging neighbor cell is during greater than default threshold value, and the sign of this adjacent eNB is added in the extended request message.

When perhaps the UE MTCH power of further judging neighbor cell is greater than the MTCH power of this residential quarter, the MTCH power of perhaps judging neighbor cell is greater than the MTCH power of this residential quarter and its difference during greater than default threshold value, the MTCH power of perhaps judging neighbor cell is during greater than default threshold value, and the sign of this adjacent eNB is added in the extended request message.

When perhaps the UE error rate of further judging neighbor cell is less than the error rate of this residential quarter, the error rate of perhaps judging neighbor cell is less than the error rate of this residential quarter and its difference during greater than default threshold value, the error rate of perhaps judging neighbor cell is during less than default threshold value, and the sign of this adjacent eNB is added in the extended request message.

When perhaps the UE CQI value of further judging neighbor cell is greater than the CQI value of this residential quarter, the CQI value of perhaps judging neighbor cell is greater than the CQI value of this residential quarter and its difference during greater than default threshold value, the CQI value of perhaps judging neighbor cell is during greater than default threshold value, and the sign of this adjacent eNB is added in the extended request message.

When perhaps the UE load measure value of further judging neighbor cell is less than the load measure value of this residential quarter, the load measure value of perhaps judging neighbor cell is less than the load measure value of this residential quarter and its difference during greater than default threshold value, the load measure value of perhaps judging neighbor cell is during less than default threshold value, and the sign of this adjacent eNB is added in the extended request message.

When perhaps the UE priority of further judging neighbor cell is higher than the priority of this residential quarter, when the priority of perhaps judging neighbor cell is higher than the priority of this residential quarter and its difference greater than default threshold value, when the priority of perhaps judging neighbor cell is higher than default threshold value, the sign of this adjacent eNB is added in the extended request message.

In step 1204, eNB-1 can judge whether first that other UE sends extended request message, perhaps judge whether expanding flow process (namely, this eNB-1 is carrying out the expansion flow process and is not changing SFN area location status into non-rim condition), if then abandon the extended request message that this UE sends, perhaps temporarily keep this extended request message, after the expansion flow process is successfully completed, abandon this extended request message, otherwise the extended request message that this UE is sent is transmitted to MCE.

In step 1205, MCE judges whether eNB-18 and eNB-2 have exceeded maximum single-frequency network area, determines that the eNB that does not exceed maximum single-frequency network area adds SFN area.

Perhaps MCE further judge eNB-18 and eNB-2 load whether less than default threshold value, determine to satisfy load and add SFN area less than the eNB of threshold value.

Perhaps MCE judges further whether eNB-18 and eNB-2 belong to the eNB that allows to add SFN area in the local configuration information, determines that the eNB that is put down in writing adds SFN area.

Perhaps MCE judges further whether eNB-18 and eNB-2 belong to the eNB that forbids adding SFN area in the local configuration information, determines that the eNB that is not put down in writing adds SFN area.

To step 1204, UE measures neighbor cell in step 1202, and sends measurement result by eNB-1 to MCE.After MCE analyzes measurement result, judge whether to exist the neighbor cell of coincidence measurement condition, if, then identify according to eNB corresponding to measurement result, corresponding eNB (such as eNB-18 and eNB-2) is added SFN area, and continue step 1205, otherwise termination process.

For example, the measurement result that MCE receives comprises eNB-2, CPICH transmission power level, and MCE compares CPICH transmission power level and the threshold value of presetting so, when finding the CPICH transmission power level greater than threshold value, selects eNB-2 is added SFN area.Perhaps measurement result comprises eNB-2, CPICH, 1, and what MCE discovery CPICH was corresponding so is 1, and expression UE has judged the CPICH transmitting power and met default condition, then selects eNB-2 is added SFN area.

Corresponding expansion Indication message, extended response message, resource coordination Indication message and the message that joins request that MCE sends to each eNB and mUPE respectively, and without strict sequencing.Wherein a kind of better mode is, MCE behind the eNB that determine to need adds SFN area, can be first eNB in the guard area that is in after the renewal send the resource coordination Indication message, the eNB that adds SFN area to needs again sends information of radio resource allocation.Can before edge eNB MBMS transmission business, just limit or forbid like this Radio Resource that the eNB in the guard area uses, better reduce or avoid co-channel interference.

Referring to Figure 14, MCE is as follows according to the concrete grammar flow process of the cell update message dynamic expansion SFN area of UE transmission in the present embodiment:

Step 1401: the UE behind cell reselection or the residential quarter handover success sends cell update message to attributive eNB-1.

Step 1402:eNB-1 is transmitted to MCE with cell update message.

Step 1403:eNB-1 sends the cell update response message to UE.

After step 1404:MCE receives cell update message, check whether the eNB-1 that sends cell update message is in SFN area edge, if, then continue step 1404, otherwise termination process.

The below still describes as an example of Figure 13 example, and MCE receives the cell update message that eNB-1 sends.

Whether the adjacent eNB (being eNB-18, eNB-2 and eNB-16) that is in SFN area outside in the adjacent eNB of step 1405:MCE detection eNB-1 meets judgment condition, judgment condition comprises: whether exceed maximum SFN area, whether its load is less than default threshold value, whether belong to the eNB that allows to add SFN area in the local configuration information, whether do not belong to the eNB that forbids adding SFN area in the local configuration information.

Step 1406:MCE finds that eNB-18, eNB-2 and eNB-16 all meet judgment condition, so, MCE sends the expansion Indication message to eNB-18, eNB-2 and eNB-16, sends transmission mode, APN, TMGI, SESSION ID, MBMS data source address information and the mUPE information of information of radio resource allocation and service identifiers, single-frequency network area sign, modulation coding mode, SFN by this message.

Step 1407:eNB-18, eNB-2 and eNB-16 receive that the expansion Indication message returns expansion indication response message.

Step 1408:MCE sends the cell update response message to eNB-1.

Step 1409:MCE sends the message that joins request to mUPE, and request adds the contents distribution tree with eNB-18, eNB-2 and eNB-16, and the carrying of the data surface of foundation and mUPE.

Perhaps send the message that joins request by the eNB-18, the eNB-2 that receive the expansion Indication message and eNB-16 to mUPE, request adds the contents distribution tree, and the carrying of the data surface of foundation and mUPE.

Perhaps MCE sends the message that joins request by cell update response message indication eNB-1 to mUPE, and request adds the contents distribution tree with eNB-18, eNB-2 and eNB-16, and the carrying of the data surface of foundation and mUPE.

Step 1410:MCE sends the resource coordination Indication message to the eNB (being eNB-36, eNB-35, eNB-3, eNB-33 and eNB-32) that needs add guard area, by this message informing eNB-36, eNB-35, eNB-3, eNB-33 and eNB-32 restriction or ban use of the Radio Resource identical with SFN area, this resource coordination Indication message to comprise SFN area information of radio resource allocation and SFN area sign etc.

Perhaps, MCE sends the message relevant with resource coordination to eNB-36, eNB-35, eNB-3, eNB-33 and eNB-32 by the indication of expansion Indication message eNB-18, eNB-2 respectively with eNB-16.ENB-18, eNB-2 can or ban use of the Radio Resource identical with SFN area by resource coordination Indication message notice eNB-36, eNB-35, eNB-3, eNB-33 and eNB-32 restriction with eNB-16, perhaps by being used for ICIC notice eNB-36, eNB-35, eNB-3, eNB-33 and the eNB-32 of SFN transmission, this ICIC comprises that sign is used for the mark of SFN transmission.

Step 1411:eNB-36, eNB-35, eNB-3, eNB-33 and eNB-32 return the resource coordination response message to MCE.

Said method is the method for dynamic expansion SFN area, after cell reselection or residential quarter occur and switch in UE or UE know and belong to edge eNB expansion SFN area, guarantee the continuity of MBMS business when UE moves, and one extension can satisfy the expansion demand of a plurality of UE simultaneously.Accordingly, expansion all is accompanied by contraction usually, and the below introduces the method for Dynamic contraction SFN area, can save Internet resources.

Referring to Figure 15, the main method flow process of MCE Dynamic contraction SFN area is as follows in the present embodiment:

ENB in the step 1501:SFN area sends message, these related news comprise with statistics registered the UE quantity of MBMS business message, cell update message, leave request message and de-registration request message.

The message that step 1502:MCE sends according to the eNB in the SFN area determines to shrink SFN area, and determines to leave the eNB of SFN area.

Step 1503:MCE sends de-registration request message to mUPE, and eNB deletion from the contents distribution tree of SFN area is left needs in request, and shrinks indication request message to this eNB transmission, notifies it to stop the transmission of MBMS business.

Step 1504:MCE further sends the resource coordination Indication message to the eNB that partly or entirely leaves, and makes its restriction use frequency band or the subcarrier identical with described SFN area.

The message relevant with resource coordination and contraction indication request message can be a piece of news.

Referring to Figure 16, MCE is as follows according to the concrete grammar flow process of the as a result Dynamic contraction SFN area of each eNB statistics in the present embodiment:

Step 1601:MCE sends with the message of adding up instruction to the eNB in the SFN area, requires to have registered in the eNB statistics overlay area UE quantity of MBMS business.

Step 1602:eNB carries out statistical operation after receiving the statistics instruction, and returns statistics to MCE.

The statistics instruction that MCE issues can also comprise cycle information, and eNB can report the UE quantity of having registered the MBMS business automatically according to cycle information.

It is 0 o'clock that step 1603:MCE finds to be in the statistics that eNB returns, and determines to shrink SFN area.

It is whether the statistics that whole neighboring edge eNB of 0 eNB return is 0 that step 1604:MCE further determines to return statistics, and in judged result when being, determine that at least this eNB need to leave SFN area.

Step 1605:MCE notifies it to be in SFN area edge to the message of the eNB transmission that becomes the edge from non-edge with SFN area location status information.

Perhaps skip this step, eNB goes out oneself to be in SFN area edge by being adjacent the eNB interaction analysis.

The information updating of step 1606:SFN area location status is the eNB at edge begins to have registered the MBMS business in coverage by control channel UE transmission rim condition information, perhaps send the SFN area relevant information of adjacent eNB, UE is known oneself be in SFN area edge.

Step 1607:MCE sends contraction indication request message to the eNB that needs leave SFN area, perhaps further leaves the eNB transmission resource coordination Indication message of SFN area to part or all of needs.

Perhaps, MCE sends to the eNB that is adjacent and need to leaves SFN area by Indication message indication edge eNB and shrinks indication request message, perhaps sends the resource coordination Indication message to it, or triggers the ICIC process.This Indication message comprises the sign of the eNB that need to leave SFN area.

Step 1608:MCE sends releasing resource coordination message to the eNB that needs leave guard area, makes its releasing to the restriction of the Radio Resource identical with SFN area.

Step 1609: the eNB that receives each message sends corresponding response message to MCE.

Step 1610:MCE sends de-registration request message to mUPE, and eNB deletion from the contents distribution tree of SFN area is left needs in request, and the carrying of the data surface of cancellation and mUPE.

Perhaps, receive that the eNB that shrinks indication request message sends de-registration request message to mUPE, the contents distribution tree is left in request, and the carrying of the data surface of cancellation and mUPE.

Perhaps, described non-edge eNB sends de-registration request message according to the indication of MCE to mUPE, and request will be received eNB deletion from the contents distribution tree of shrinking indication request message, and the carrying of the data surface of cancellation and mUPE.

Above-mentioned steps 1607 to 1610 is without strict sequencing.

Referring to Figure 17, MCE is as follows according to the concrete grammar flow process that UE carries out the rear area update message Dynamic contraction SFN area that comprises source MBMS radio resource utilization entity that sends of MBMS radio resource utilization entity switching in the present embodiment:

Step 1701: the UE that finishes cell reselection or cell update sends cell update message to eNB, for example, referring to shown in Figure 180, UE moves to eNB-6 from eNB-1, UE sends cell update message to eNB-6, and this cell update message comprises the sign of eNB-1 and the sign of eNB-6.

The UE and the interactive information between the MCE that are in state of activation can merge with other upstream or downstream message.

Step 1702:eNB-6 is transmitted to MCE with cell update message.

Step 1703:MCE compares the sign of source eNB and the sign of target eNB, if comparative result is consistent, process ends then, otherwise, sign according to the source eNB in the cell update message (being eNB-1), the registration that the eNB-1 that will have is corresponding the UE quantity of MBMS business subtract 1, and according to the sign of the target eNB in the cell update message (being eNB-6), the registration that the eNB-6 that will have is corresponding the UE quantity of MBMS business add 1.

Step 1704:MCE judges whether the quantity obtain is 0, if be not 0, and process ends then, otherwise, detect further in the adjacent eNB of eNB-1 whether edge eNB is arranged, if having, then continue step 1705, otherwise process ends.Wherein, eNB-6 may become from the edge non-edge.

Step 1705:MCE notifies it to be in SFN area edge to the message of eNB-1 transmission with SFN area location status information.

Perhaps skip this step, eNB-1 goes out oneself to be in SFN area edge by being adjacent the eNB interaction analysis.

Step 1706:eNB-1 sends rim condition information by control channel begins to have registered the MBMS business in coverage UE, perhaps sends the SFN area relevant information of adjacent eNB, UE is known oneself be in SFN area edge.

Step 1707: receive that the eNB-1 with the message of SFN area location status information returns response message to MCE.

Step 1708:MCE sends to edge eNB (being eNB-18, eNB-2 and eNB-16) and shrinks indication request message, make it stop the professional transmission of MBMS, perhaps further send the resource coordination Indication message, make its restriction or ban use of the Radio Resource identical with SFN area.MCE is by whether nothing but judging in its whole adjacent eNB of eNB at edge edge eNB, if then definite its need to leave SFN area.

Perhaps, MCE sends releasing radio-resource-configuration message by message (perhaps again sending Indication message) the indication eNB-1 with SFN area location status information to eNB-18, eNB-2 and eNB-16, perhaps further sends the resource coordination Indication message or is used for the ICIC that SFN transmits.The sign that should comprise with the message of SFN area location status information eNB-18, eNB-2 and eNB-16.

Step 1709: receive that eNB-18, the eNB-2 and the eNB-16 that shrink indication request message return contraction indication response message to MCE.

Step 1710:MCE sends releasing resource coordination message to the eNB (being eNB-36, eNB-35, eNB-3, eNB-33 and eNB-32) that needs leave guard area, notifies it can stop limiting or banning use of the Radio Resource identical with SFN area.

Step 1711: receive that eNB-36, the eNB-35, eNB-3, eNB-33 and the eNB-32 that remove resource coordination message return response message to MCE.

Step 1712:MCE sends de-registration request message to mUPE, and request is with eNB-18, eNB-2 and eNB-16 deletion from the contents distribution tree, and the carrying of the data surface of cancellation and mUPE.

Perhaps, eNB-18, eNB-2 and eNB-16 send de-registration request message to mUPE, and the contents distribution tree is left in request, and the carrying of the data surface of cancellation and mUPE.

Perhaps, eNB-1 sends de-registration request message according to the indication of MCE to mUPE, and request is with eNB-18, eNB-2 and eNB-16 deletion from the contents distribution tree, and the carrying of the data surface of cancellation and mUPE.

Referring to Figure 19, MCE is as follows according to the concrete grammar flow process of leaving request message or cancellation MBMS business request information Dynamic contraction SFN area that UE initiatively sends in the present embodiment:

Step 1901:UE sends to eNB (being the eNB-1 among Figure 18) and leaves request message or nullify the MBMS business request information.

Step 1902:eNB-1 will leave request message or nullify the MBMS business request information and be transmitted to MCE.

Step 1903:MCE has left request message or nullified the registration that eNB-1 is corresponding of MBMS business request information the MBMS business according to this UE quantity subtracts 1.

Step 1904:MCE judges whether the quantity that obtains is 0, if be not 0, process ends then, otherwise, detect further in the adjacent eNB of eNB-1 whether edge eNB is arranged, if have, then continue step 1905, otherwise, to the message of eNB-1 transmission with SFN area location status information, notify it to be in SFN area edge, perhaps direct termination process.

Step 1905:MCE notifies it to be in SFN area edge to the message of eNB-1 transmission with SFN area location status information.

Perhaps skip this step, eNB-1 goes out oneself to be in SFN area edge by being adjacent the eNB interaction analysis.

Step 1906:eNB-1 sends rim condition information by control channel begins to have registered the MBMS business in coverage UE, perhaps sends the SFN area relevant information of adjacent eNB, UE is known oneself be in SFN area edge.

Step 1907: receive that the eNB-1 with the message of SFN area location status information returns response message to MCE.

Step 1908:MCE sends to edge eNB (being eNB-18, eNB-2 and eNB-16) and shrinks indication request message, make it stop the professional transmission of MBMS, perhaps further send the resource coordination Indication message, make its restriction or ban use of the Radio Resource identical with SFN area.

Perhaps, MCE passes through to send releasing radio-resource-configuration message with the message indication eNB-1 of SFN area location status information to eNB-18, eNB-2 and eNB-16, perhaps further sends the resource coordination Indication message or is used for the ICIC that SFN transmits.The sign that should comprise with the message of SFN area location status information eNB-18, eNB-2 and eNB-16.

Step 1909: receive that eNB-18, the eNB-2 and the eNB-16 that shrink indication request message return contraction indication response message to MCE.

Step 1910:MCE sends releasing resource coordination message to the eNB (being eNB-36, eNB-35, eNB-3, eNB-33 and eNB-32) that needs leave guard area, notifies it can stop limiting or banning use of the Radio Resource identical with SFN area.

Step 1911: receive that eNB-36, the eNB-35, eNB-3, eNB-33 and the eNB-32 that remove resource coordination message return response message to MCE.

Step 1912:MCE sends de-registration request message to mUPE, and request is with eNB-18, eNB-2 and eNB-16 deletion from the contents distribution tree, and the carrying of the data surface of cancellation and mUPE.

Perhaps, eNB-18, eNB-2 and eNB-16 send de-registration request message to mUPE, and the contents distribution tree is left in request, and the carrying of the data surface of cancellation and mUPE.

Perhaps, eNB-1 sends de-registration request message according to the indication of MCE to mUPE, and request is with eNB-18, eNB-2 and eNB-16 deletion from the contents distribution tree, and the carrying of the data surface of cancellation and mUPE.

Above-described embodiment is to describe as an example of the corresponding residential quarter of eNB example, expansion and the granularity of shrinking namely be cell-level also be the eNB level.ENB also can corresponding a plurality of residential quarters, and when expansion or the granularity of shrinking are the eNB level, i.e. expansion or when shrinking all residential quarters in the eNB coverage is set up, expansion or shrink the method that the method for SFN area is introduced with above-mentioned embodiment.

Basic skills when the below's introduction expansion or the granularity of shrinking are cell-level.MCE has had registration corresponding to sign, each residential quarter of a plurality of residential quarters corresponding to each eNB the UE quantity of MBMS business and SFN area location status information etc.ENB has had registration corresponding to sign, each residential quarter of a plurality of residential quarters in the coverage UE quantity of MBMS business and SFN area location status information etc.MCE according to registration corresponding to each residential quarter the UE quantity of MBMS business determine to set up, expansion and shrink SFN area.

In the situation of setting up SFN area, eNB after carrying out statistical operation, the registration that each residential quarter is corresponding the UE quantity of MBMS business send to MCE.MCE is known when the UE of MBMS business has been registered in existence in the residential quarter, just corresponding eNB sends information of radio resource allocation to this residential quarter, with request mUPE this eNB is added the contents distribution tree, but only this residential quarter is added SFN area, perhaps further its neighbor cell is also added SFN area.

In the situation of expansion SFN area, MCE know registration that edge cell reports the UE quantity of MBMS business determined expansion SFN area greater than 0 o'clock, determine expansion SFN area when perhaps receiving extended request message or the cell update message that the UE that is in edge cell sends or receiving the extended request message that the eNB that edge cell should be arranged is sent.MCE will add SFN area with the adjacent of edge cell and the part or all of residential quarter that is in SFN area outside, and to corresponding eNB transmission information of radio resource allocation, when if residential quarter corresponding to this eNB all is in SFN area outside before expansion SFN area, further request mUPE adds the contents distribution tree with this eNB, perhaps indicates eNB to add the contents distribution tree to the mUPE request.

The UE that the eNB that edge cell should be arranged is begun in the edge cell sends rim condition information.UE sends extended request message when laying oneself open to edge cell knowing, same, eNB at least one residential quarter in knowing coverage is to send extended request message when having the UE that has registered the MBMS business in edge cell and the edge cell, the sign that can comprise neighbor cell in this extended request message perhaps further comprises the sign of the eNB of neighbor cell ownership.MCE only need expand the residential quarter adjacent with edge cell.Wherein, the eNB of ownership can carry out alternately with adjacent eNB, thereby directly obtains the sign of adjacent eNB, and UE can know whether neighbor cell belongs to adjacent eNB and obtain the sign of adjacent eNB by the eNB of ownership.

After UE carries out cell reselection or residential quarter switching, send cell update message, MCE can subtract 1 and add 1 with the corresponding UE quantity of having registered the MBMS business in corresponding residential quarter according to the cell-of-origin in cell update message sign and Target Cell Identifier, determines expansion or contraction SFN area according to UE quantity corresponding to each residential quarter after upgrading.

In the situation of shrinking SFN area, MCE find registration that each residential quarter in the SFN area of eNB statistics is corresponding the UE quantity of MBMS business exist for 0 as a result the time, determine to shrink SFN area, and determine that according to UE quantity corresponding to each residential quarter needs leave the residential quarter of SFN area.Perhaps, MCE subtracts 1 and add 1 according to the cell update message received with the corresponding UE quantity of having registered the MBMS business in corresponding residential quarter, and the quantity after obtaining upgrading, determine that according to UE quantity corresponding to each residential quarter needs leave the residential quarter of SFN area, and after further determining to leave in the corresponding eNB coverage in residential quarter of SFN area all and all leaving SFN area zone, with this eNB deletion from the contents distribution tree.

ENB can be professional to part cell transmission MBMS, limits simultaneously or forbid the use of the Radio Resource of part residential quarter, can save Internet resources and minimizing or avoid co-channel interference.

Determine and control foundation, expansion and the contraction of SFN area in the present embodiment by the MCE of concrete management MBMS business, be conducive to unified management and the distribution of SFN area Radio Resource.Present embodiment provides the method for multiple dynamic or semi-static expansion SFN area, guarantees the continuity of UE MBMS business when mobile, and the method for the expansion SFN area that has ready conditions is provided, at the successional Internet resources of saving simultaneously that guarantee the MBMS business.Present embodiment also provides the method for multiple dynamic or semi-static contraction SFN area, can save Internet resources.Simultaneously, present embodiment provides the various configurations guard method of area, and the co-channel interference of minimizing and SFN area improves the MBMS service transmission quality.And present embodiment provides the method for multiple foundation and configuration SFN area, realizes the flexible configuration of SFN area.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (1)

1. a method that disposes outer peripheral areas is characterized in that, may further comprise the steps:

Multicast coordination entity MCE sends Indication message to the MBMS radio resource utilization entity that is in the single-frequency network area edge, and described Indication message comprises that needs add the sign of the MBMS radio resource utilization entity of outer peripheral areas;

The MBMS radio resource utilization entity at described edge sends the 4th message that is used for resource coordination according to described message to corresponding MBMS radio resource utilization entity, makes its restriction use the Radio Resource identical with described single-frequency network area; Perhaps

The MBMS radio resource utilization entity at described edge makes corresponding MBMS radio resource utilization physical constraints use the Radio Resource identical with described single-frequency network area according to described message trigger Inter-Cell Interference Coordination process.

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