WO2012000332A1 - Mbms中用户设备发送计数响应的实现方法和系统 - Google Patents

Mbms中用户设备发送计数响应的实现方法和系统 Download PDF

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Publication number
WO2012000332A1
WO2012000332A1 PCT/CN2011/072132 CN2011072132W WO2012000332A1 WO 2012000332 A1 WO2012000332 A1 WO 2012000332A1 CN 2011072132 W CN2011072132 W CN 2011072132W WO 2012000332 A1 WO2012000332 A1 WO 2012000332A1
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WIPO (PCT)
Prior art keywords
feedback
network side
mbsfn
response
rrc
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PCT/CN2011/072132
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English (en)
French (fr)
Inventor
许辉
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201010212986.0A external-priority patent/CN101883327B/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/700,666 priority Critical patent/US8879459B2/en
Priority to EP11800077.7A priority patent/EP2568725B1/en
Publication of WO2012000332A1 publication Critical patent/WO2012000332A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the invention relates to a service information reporting technology of a user equipment (UE, User Equipment) in a multimedia broadcast multicast service (MBMS) system, and particularly relates to a method for implementing a user equipment sending a count response in an MBMS And system.
  • UE User Equipment
  • MBMS multimedia broadcast multicast service
  • the 3rd Generation Partnership Project proposes an MBMS service, which is a technology for transmitting data from one data source to multiple target mobile terminals.
  • the sharing of resources improves the utilization of network resources, especially air interface resources.
  • the UE In the Long Term Evolution (LTE) system, the UE (or terminal) is notified that a certain MBMS service is about to change. These changes may be session start, service bearer update, or session stop.
  • the downlink control information (DCI, Downlink Control Information) and the MBMS-Radio Network Temporary Identifier (M-RNTI) may be sent on the Physical Downlink Control Channel (PDCCH).
  • the UE further reads a specific multicast control channel (MCCH, Multicast Control CHannel) message according to the related information in the DCI, which is called an MCCH notification mechanism.
  • the MCCH will send specific service configuration parameters, such as service ID, RLC (Radio Link Control), Media Access Control (MAC), and physical layer configuration parameters.
  • MBMS has two bearer modes: broadcast mode and enhanced broadcast mode. Since there is no multicast mode, the network side is not able to know which MBMS services the UE receives/or is interested in receiving. Enhanced broadcasts are between broadcast and multicast, absorbing the advantages of simple processes in broadcasting and resource optimization in multicast.
  • BM-SC Broadcast Multicast Service Center
  • BM-SC Broadcast Multicast Service Center
  • Enhanced broadcast is an optimization and extension of broadcast. For example, in an access network, enhanced broadcast does not send data to cells that do not receive users.
  • the network side needs to obtain the receiving status information of the UE, such as the number of UEs that are receiving a given MBMS service. Information, therefore, a mechanism is needed for triggering the UE to report information about its own receiving status.
  • SFN System Frame Number
  • the MBMS system introduces a counting process.
  • the Counting process refers to the process of receiving an MBMS service session or during the process of the session (also called recounting).
  • the network side collects the number of users in the cell and is interested in receiving an MBMS service to confirm whether to use MBSFN transmission. the way.
  • the receiving of the MBMS service is interested in: the UE is ready to receive the MBMS service transmitted by the MBSFN, and the UE listens to the MCCH notification message.
  • the identifier and access probability of the MBMS service are added to the access information of the MCCH. The reason why the access probability is used is because all users do not need to establish a connection for feedback, as long as the number of feedbacks may reach the threshold, otherwise the idle (Idle) state will be more users. Causes upstream congestion. Summary of the invention
  • the 3GPP RellO MBMS needs to activate or deactivate the MBSFN transmission mode, which is based on the UE count response, but the prior art specification does not have one.
  • a method for implementing a UE to send a count response that is, the UE does not know when to send the reception status information and related information of which count responses are transmitted.
  • the main purpose of the present invention is to provide a method and a system for implementing a UE to send a count response in an MBMS.
  • the UE reports the count response to the network side according to the solution, and implements an MBSFN transmission mode for the network side to activate or deactivate the MBMS service. Requirements.
  • a method for implementing a count response of a user equipment UE in a multimedia broadcast multicast service MBMS comprising: setting a trigger condition for feedback by a UE, the UE sending a count response to the network side according to the trigger condition, and the network side according to the count of the UE
  • the response counts the number of UEs, and activates or deactivates the multicast broadcast single frequency network MBSFN transmission according to the statistical result.
  • the triggering condition includes at least one of the following: periodic feedback, event triggering feedback, and the network side sending a feedback request indication.
  • the feedback period of the periodic feedback is less than the duration of the service session.
  • the events triggering the feedback include: session start, session end, bearer change, cell update, cell handover.
  • the feedback request indicates that the MAC signaling bearer is controlled by radio resource control RRC signaling or media access.
  • the counting response is carried in: RRC connection request information, or RRC connection reconfiguration is completed.
  • RRC connection request information or RRC connection reconfiguration is completed.
  • RRC connection reestablishment request information or RRC connection reestablishment completion information
  • RRC connection setup complete information, or cell update information, or random access request information, or measurement report, or media access control control
  • cell update information or random access request information, or measurement report, or media access control control
  • media access control control In the particle MAC CE message, or in dedicated signaling.
  • An implementation system for sending a count response of a user equipment in an MBMS including:
  • the UE is configured to send, to the network side, a counting port according to a trigger condition of the set UE feedback count response;
  • the network side is configured to perform statistics on the number of UEs according to the UE count response, and activate or deactivate the MBSFN transmission according to the statistical result.
  • the UE includes: a triggering unit, configured to trigger a UE to send a counting response according to a feedback period, or a triggering event, or a feedback request, and a feedback unit, configured to send a counting response.
  • a triggering unit configured to trigger a UE to send a counting response according to a feedback period, or a triggering event, or a feedback request
  • a feedback unit configured to send a counting response.
  • the network side includes: a statistics unit, configured to perform statistics on the number of UEs according to the UE count response; and an operation unit, configured to activate or deactivate the MBSFN transmission according to the statistical result.
  • the network side further includes: a bearer unit, configured to carry a feedback period, or a trigger event, or a feedback request indication on an RRC message or a MAC message; and a sending unit, configured to send an RRC message or a MAC message;
  • the UE further includes: a receiving unit, configured to receive an RRC message or a MAC message.
  • the statistic unit includes at least one base station eNB and one multi-cell/multicast coordination entity (MCE), and the operation unit includes an MCE, where the eNB is configured to perform statistics on the number of UEs according to the UE count response, and report the statistical result.
  • MCE multi-cell/multicast coordination entity
  • the above counting response includes at least one of the following information: UE status, MBSFN area identification ID, notification indication notification indicator, MBMS service ID, UE ID, physical multicast channel PMCH ID, session session ID, logical channel identifier LCID, service List index, Feedback cycle, trigger event.
  • the UE status includes: receiving, receiving, stopping receiving, receiving bearer change, cell update, and cell handover.
  • the MBSFN transmission is activated as described above, including: transmitting the MBMS service in the MBSFN area in the MBSFN area; and deactivating the MBSFN transmission, including: stopping the MBSFN mode to transmit the MBMS service in the MBSFN area.
  • the network side indicates that the UE reports a count response or the UE actively sends a count response.
  • the invention can enable the UE to send a count response according to the feedback trigger condition under the condition of multiple MCCHs, and realize the correct statistics of the number of UEs on the network side, and meet the requirement of activating or deactivating the MBSFN transmission mode.
  • FIG. 2 is a schematic flow chart of periodically transmitting a count response in the present invention
  • FIG. 3 is a schematic diagram of an event triggering uplink feedback process in the present invention.
  • FIG. 4 is a schematic flowchart of a network side trigger feedback embodiment 3/4 according to the present invention.
  • FIG. 5 is a schematic diagram of uplink feedback of a RRC IDLE state UE according to the present invention.
  • FIG. 6 is a schematic diagram showing the structure of a system for implementing a count response of a UE in an MBMS according to the present invention. detailed description
  • the application scenario of the present invention is: the cell where the UE is located belongs to one or more MBSFN areas, and each MBSFN area corresponds to one MCCH, and the network side needs to determine according to the information of the UE receiving status. No Activate/deactivate MBSFN transmission.
  • the present invention is directed to a triggering process for responding to a feedback response of a UE in an MBMS, a period in which the network side sends an uplink feedback, or a triggering event, or a feedback request indication, and the UE sends a counting response to the network side according to the triggering condition, and the network side responds to the UE according to the counting response.
  • the number is counted, and the requirements for activating or deactivating the MBSFN transmission mode are implemented according to the statistical result.
  • the method for implementing the sending response of the UE in the MBMS of the present invention includes the following steps:
  • Step 1 setting a trigger condition of the UE feedback count response
  • Step 2 The UE sends a count response to the network side according to the trigger condition.
  • Step 3 The network side performs statistics on the number of UEs according to the UE count response.
  • the network side includes an eNB and a Multi-cell/Multicast Coordination Entity (MCE), where the MCE is a logical entity, and the MCE may exist separately or exist as part of other network elements, such as an eNB.
  • MCE Multi-cell/Multicast Coordination Entity
  • the network side may also be a relay, or a home base station (HeNB, Home eNodeB) or the like.
  • the triggering condition includes at least one of the following: a periodic trigger, an event trigger, and a network side trigger.
  • the period may be selected by the UE itself, or the network side may indicate by an RRC message or a MAC message.
  • the period selected by the UE itself may be one or more MCCH modification periods or a Multicast CHannel (MCH) scheduling period.
  • MCH Multicast CHannel
  • the period is generally less than the duration of the service session.
  • the event may be: a session start, or a session end, or bearer change, or cell update, or cell handover.
  • the network side triggering may be that the network side indicates that the UE sends a count response by using an RRC message or a MAC message.
  • the RRC message may be an MCCH message or a system message
  • the MAC message may be a MAC Control Particle (CE) message.
  • CE MAC Control Particle
  • the UE may be in an RRC idle state (RRC IDLE state), or RRC connected state (RRC CON ECTED state);
  • the count response sent by the UE includes but is not limited to one or more of the following contents: UE status, MBSFN area identifier (ID), notification indicator, MBMS service ID, UE ID, physical multicast channel (PMCH, Physical Multicast Channel ) ID, session ID, logical channel ID (LCID, Logical Channel ID), service list index, feedback period, trigger event.
  • the foregoing UE states include: receiving, receiving, stopping receiving, cell updating, and cell switching.
  • step 2 if the UE is in the RRC idle state (RRC-IDLE state, referred to as Idle state), the UE first initiates a random access procedure, and sends an RRC connection setup request, and additionally sends a send count response in the RRC connection setup request information. For example, setting the RRC connection establishment cause to MBMS reception;
  • step 2 if the UE is in the RRC connection state (the RRC-CONNECTED state, referred to as the Connected state), the UE adds a count response in the RRC connection reconfiguration complete information, such as setting the RRC connection reconfiguration reason to MBMS reception;
  • the network side statistics on the number of UEs according to the UE count response refers to obtaining the number of UEs that are receiving the MBMS service and/or the MBMS service receiving the MBMS service according to the UE count response; if the probability factor is used in the feedback process
  • the network side can obtain the UE quantity information in the MBSFN area according to the UE count response and the probability factor.
  • the foregoing UE includes a UE that is receiving an MBMS service and/or is interested in receiving an MBMS service; the counting response sent by the UE is generally small, so that the existing RRC signaling or MAC CE signaling or dedicated signaling information may be used.
  • the RRC signaling includes one or more of the following signaling: RRC connection request information, RRC connection reconfiguration complete information, RRC connection reestablishment request information, RRC connection reestablishment completion information, RRC connection establishment Complete information, cell update information, random access request information, measurement report.
  • the network side sends the feedback request indication information on the MCCH or the system message, which may be a single RRC message (message) or an information element (IE, Info. Element).
  • the application scenario of this example is that the UE periodically initiates a feedback process, and the period is selected by the UE itself.
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of a method for periodically initiating feedback by a UE according to the present invention. As shown in FIG. 2, the method for periodic feedback of a UE in this example includes the following steps:
  • Step 101 The UE selects a feedback period, and in each feedback period, the UE sends a count response to the network side.
  • the feedback period may be a period that has been defined in the specification.
  • the period may be: one or more MCCH modification periods, or one or more multicast channel scheduling periods (MSP, MCH Scheduling Period); different
  • MSP multicast channel scheduling periods
  • the UE may select the same or different feedback period; in order to reduce the number of UEs that initiate the feedback at the same time, the UE may randomly select the time at which the count response is sent during the feedback period; preferably, each UE sends in each feedback period The response is counted once. If the network side receives multiple count responses of the same UE within one feedback period, it only counts once.
  • the feedback period is generally less than the duration of the service session
  • the UE may be in an RRC connected state or an RRC idle state;
  • the network side generally includes an eNB and an MCE.
  • the count response is generally sent through RRC signaling or MAC CE signaling; if the UE is scheduled in one feedback period, the UE sends a count response, otherwise the UE passes the scheduling request (SR, Schedule Request) Or the Buffer Status Report (BSR, Buffer Status Report) requests the uplink resource to send a count response.
  • SR scheduling request
  • BSR Buffer Status Report
  • the RRC signaling includes one or more of the following: RRC connection request information, RRC Connection Reconfiguration Complete Information, RRC Connection Reestablishment Request Information, RRC Connection Reestablishment Complete Information, RRC Connection Setup Complete Information, Cell Update Information, Random Access Request Information, Measurement Report, Dedicated RRC Signaling, MAC CE Message.
  • the UE in the RRC idle state generally sends a count response through the random access procedure, such as carrying the UE count response through the RRC connection request message in message 3 (Msg3);
  • FIG. 3 shows a feedback diagram of the RRC Idle UE.
  • a part of the random access preamble (Preamble) sequence may be reserved to the MBMS UE, or the MBMS UE may be allocated a random access resource different from the unicast UE.
  • the counting response includes one or more of the following information: UE status, MBSFN area ID, notification indication, MBMS service ID, UE ID, PMCH ID, session ID, LCID, service list index, feedback period, trigger event.
  • the foregoing UE states include: receiving, receiving, stopping receiving, cell updating, and cell switching.
  • Step 102 The network side performs statistics on the number of UEs according to the UE count response.
  • the network side performs statistics according to the UE count response in a period of time
  • the network side does not receive the UE count response, and the network side considers that the UE stops receiving or is not interested in receiving the MBMS service.
  • the network side receives multiple count responses of the same UE, and the network The side can be counted only once;
  • the network side counts and counts according to the count response, and adjusts the MBSFN transmission according to the statistical result
  • the MBSFN adjustment refers to that the network side activates or deactivates the MBSFN transmission; the activated MBSFN transmission refers to the MBSFN transmission in the MBSFN area, and the deactivated MBSFN transmission refers to stopping the use in the MBSFN area.
  • the MBSFN mode transmits MBMS services.
  • the deactivation of the MBSFN transmission generally requires the UE to be notified in advance, and generally does not affect the existing service session process.
  • the eNB When the network side includes at least one eNB and one MCE, the eNB responds according to the UE count response. The number of UEs is counted, and the statistics are reported to the MCE. The MCE summarizes the statistics reported by the eNB and activates or deactivates the MBSFN transmission according to the aggregated statistics.
  • the UE entering the Connected state can be returned to the Idle state through RRC signaling, or other high layer signaling, or dedicated signaling.
  • the first embodiment is a periodic feedback process initiated by the UE. As long as the session duration of the service is not less than the feedback period, the process can perform correct statistics on the UE receiving state, and the implementation is simple.
  • the scenario in this example is that the UE sends an uplink count response when a specific event occurs.
  • the method for implementing the count response sent by the UE in this example includes the following steps:
  • Step 201 The UE selects an event that triggers a feedback count response. When the trigger event occurs, the UE sends a count response to the network side.
  • the triggering event includes at least one of the following: a session start, a session end, a bearer change, a cell update, and a cell handover;
  • the UE may be in an RRC connected state or an RRC idle state;
  • the network side generally includes an eNB and an MCE.
  • the counting response is sent by RRC signaling or MAC CE signaling.
  • the triggering event occurs, if the UE has uplink available resources, the UE sends a count response, otherwise the UE requests the uplink resource through the SR or the BSR. Used to send a count response.
  • the RRC signaling includes one or more of the following: RRC connection request information, RRC connection reconfiguration complete information, RRC connection reestablishment request information, RRC connection reestablishment completion information, RRC connection setup complete information, cell update information, Random access request information, measurement report, dedicated RRC signaling, MAC CE message.
  • the UE in the RRC idle state generally sends a count response through the random access procedure, such as carrying the UE count response through the RRC connection request information in the message 3;
  • a part of the random access preamble sequence may be reserved to the MBMS UE, or the MBMS UE may be allocated a random access resource different from the unicast UE.
  • the counting response includes one or more of the following information: UE status, MBSFN area ID, notification indication, MBMS service ID, UE ID, PMCH ID, session ID, LCID, service list index, feedback period, trigger event.
  • the foregoing UE states include: receiving, receiving, stopping receiving, cell updating, and cell switching.
  • Step 202 The network side performs statistics on the number of UEs according to the UE count response.
  • the network side performs statistics according to the UE count response in a period of time; the period of time is generally set by the network side according to requirements;
  • the network side may only count once;
  • the network side counts and counts according to the count response, and adjusts the MBSFN transmission according to the statistical result
  • the MBSFN adjustment refers to that the network side activates or deactivates the MBSFN transmission; the activated MBSFN transmission refers to the MBSFN transmission in the MBSFN area, and the deactivated MBSFN transmission refers to stopping the use in the MBSFN area.
  • the MBSFN mode transmits MBMS services.
  • the deactivation of the MBSFN transmission generally requires the UE to be notified in advance, and generally does not affect the existing service session process.
  • the UE entering the Connected state can be returned to the Idle state through RRC signaling, or other high layer signaling, or dedicated signaling.
  • the second embodiment is an event triggering feedback process initiated by the UE, which can perform real-time correct statistics on the UE receiving status, and is simple to implement.
  • the scenario of the present example is that the network side sends a feedback request indication, and the UE sends a count response according to the foregoing indication.
  • the method for implementing the UE feedback response response by the network side of the present example includes Next steps:
  • Step 301 The network side sends a feedback request indication to the UE by using an RRC message or a MAC CE message.
  • the RRC message may be an MCCH message or a system message; the RRC message may be a single RRC message or an IE;
  • the feedback request indication generally includes an MBMS service ID, or an MBMS session ID, or bitmap information indicating an MBMS session; in order to reduce the number of UEs that are simultaneously fed back, the feedback request indication generally further includes a probability factor.
  • the UE may be in an RRC connected state or an RRC idle state; for the RRC connected state UE and the RRC idle state UE, the above probability factors are generally set to different values respectively.
  • the network side generally includes an eNB and an MCE.
  • Step 302 The UE sends a count response to the network side according to the feedback request indication.
  • the UE obtains the feedback request indication by reading the RRC message or the MAC CE message.
  • the UE may directly obtain the feedback request indication.
  • the UE generally needs a corresponding mechanism to monitor the feedback request indication, such as Monitor MCCH notification information or paging information.
  • the counting response is sent by RRC signaling or MAC CE signaling.
  • the UE sends a count response, otherwise the UE requests through the SR or BSR.
  • the uplink resource is used to send a count response.
  • the RRC signaling includes one or more of the following: RRC connection request information, RRC connection reconfiguration complete information, RRC connection reestablishment request information, RRC connection reestablishment completion information, RRC connection setup complete information, cell update information, Random access request information, measurement report, dedicated RRC signaling, MAC CE message.
  • the UE in the RRC idle state generally sends a count response through the random access procedure, such as carrying the UE count response through the RRC connection request information in the message 3;
  • a part of the random access preamble sequence may be reserved to the MBMS UE, or the MBMS UE may be allocated a random access resource different from the unicast UE.
  • the counting response includes one or more of the following information: UE status, MBSFN area ID, notification indication, MBMS service ID, UE ID, PMCH ID, session ID, LCID, service list index, feedback period, trigger event.
  • the foregoing UE states include: receiving, receiving, stopping receiving, cell updating, and cell switching.
  • Step 303 The network side performs statistics on the number of UEs according to the UE count response.
  • the network side performs statistics according to the UE count response in a period of time; the period of time is generally set by the network side according to requirements;
  • the network side may only count once;
  • the network side performs statistics on the number of UEs according to the counting response, and adjusts the MBSFN transmission according to the statistical result;
  • the MBSFN adjustment refers to that the network side activates or deactivates the MBSFN transmission; the activated MBSFN transmission refers to the MBSFN transmission in the MBSFN area, and the deactivated MBSFN transmission refers to stopping the use in the MBSFN area.
  • the MBSFN mode transmits MBMS services.
  • the deactivation of the MBSFN transmission generally requires the UE to be notified in advance, and generally does not affect the existing service session process.
  • the UE entering the Connected state can be returned to the Idle state through RRC signaling, or other high layer signaling, or dedicated signaling.
  • the third embodiment is a feedback process initiated by the network side, and the process can collect statistics on the UE receiving state according to requirements, but the implementation is complicated.
  • the scenario of the present example is that the network side sends a feedback request indication, and the UE sends a count response according to the foregoing indication.
  • the method for implementing the UE feedback response response by the network side of the present example includes Next steps:
  • Step 401 The network side sends a feedback request indication to the UE by using an RRC message or a MAC CE message.
  • the RRC message may be an MCCH message or a system message; the RRC message may be a single RRC message or an IE;
  • the feedback request indication generally includes an MBMS service ID, or an MBMS session ID, or bit mapping information indicating an MBMS session, and a feedback period or a feedback triggering event; in order to reduce the number of UEs that are simultaneously fed back, the feedback request indication generally further includes a probability factor.
  • the UE may be in an RRC connected state or an RRC idle state; for the RRC connected state UE and the RRC idle state UE, the above probability factors are generally set to different values respectively.
  • the network side generally includes an eNB and an MCE.
  • Step 402 The UE sends a count response to the network side according to the feedback request indication.
  • the UE obtains the feedback request indication by reading the RRC message or the MAC CE message.
  • the UE may directly obtain the feedback request indication.
  • the UE generally needs a corresponding mechanism to monitor the feedback request indication, such as Monitor MCCH notification information or paging information.
  • the counting response is sent by RRC signaling or MAC CE signaling.
  • the UE sends a count response, otherwise the UE requests through the SR or BSR.
  • the uplink resource is used to send a count response.
  • the RRC signaling includes one or more of the following: RRC connection request information, RRC connection reconfiguration complete information, RRC connection reestablishment request information, RRC connection reestablishment completion information, RRC connection setup complete information, cell update information, Random access request information, measurement report, dedicated RRC signaling, MAC CE message.
  • the UE in the RRC idle state generally sends a count response through the random access procedure, such as carrying the UE count response through the RRC connection request information in the message 3;
  • a part of the random access preamble sequence may be reserved to the MBMS UE, or the MBMS UE may be allocated a random access resource different from the unicast UE.
  • the UE After the UE sends the count response for the first time, the UE generally performs periodic feedback or event trigger feedback to the network side according to the feedback period or the feedback trigger event.
  • the counting response includes one or more of the following information: UE status, MBSFN area ID, notification indication, MBMS service ID, UE ID, PMCH ID, session ID, LCID, service list index, feedback period, trigger event.
  • the foregoing UE states include: receiving, receiving, stopping receiving, cell updating, and cell switching.
  • Step 403 The network side performs statistics on the number of UEs according to the UE count response.
  • the network side performs statistics according to the UE count response in a period of time; the time period is generally set by the network side according to requirements; if the feedback period is set, the period of time is generally not less than the feedback period, and the feedback period is generally smaller than the service session duration. Time
  • the network side may only count once;
  • the network side counts and counts according to the count response, and adjusts the MBSFN transmission according to the statistical result
  • the MBSFN adjustment refers to that the network side activates or deactivates the MBSFN transmission; the activated MBSFN transmission refers to the MBSFN transmission in the MBSFN area, and the deactivated MBSFN transmission refers to stopping the use in the MBSFN area.
  • the MBSFN mode transmits MBMS services.
  • the deactivation of the MBSFN transmission generally requires the UE to be notified in advance, and generally does not affect the existing service session process.
  • the UE entering the Connected state can be returned to the Idle state through RRC signaling, or other high layer signaling, or dedicated signaling.
  • the fourth embodiment is a feedback process initiated by the network side.
  • the difference between the embodiment and the embodiment 3 is that after the UE sends the count response for the first time, it needs to continue to advance according to the feedback period or the feedback trigger event.
  • Line feedback the network side can control the feedback process, but the implementation is more complicated.
  • the system for transmitting the count response of the UE in the MBMS of the present invention includes the UE and the network side, where the UE is configured to send a count response to the network side according to the trigger condition of the set UE feedback count response; the network side is configured to respond to the UE according to the UE count response.
  • the number is counted and the MBSFN transmission is activated or deactivated based on the statistics.
  • the UE may include a trigger unit 62 and a feedback unit 64, as shown in FIG. 6, where the trigger unit 62 is configured to trigger a UE to send a count response according to a feedback period, or a feedback request indication; the feedback unit 64 is configured to send Count the response.
  • the network side may include: a statistics unit 65 and an operation unit 66.
  • the statistics unit 65 is configured to count the number of UEs according to the UE count response; and the operation unit 66 is configured to activate or deactivate the MBSFN transmission according to the statistical result.
  • the statistical unit 65 includes at least one eNB and one MCE; the operating unit 66 includes an MCE.
  • the eNB is configured to perform statistics on the number of UEs according to the UE count response, and send the statistics to the MCE.
  • the MCE is used to summarize the statistics of the eNB and activate or deactivate the MBSFN transmission according to the aggregated statistics.
  • the network side may further include a bearer unit 60 and a sending unit 61, as shown in FIG. 6, where the bearer unit 60 is configured to carry a feedback period, or a triggering event, or a feedback request indication on an RRC message or a MAC message;
  • the RRC message may be an MCCH message or a system message, and the MAC message may be a MAC CE message;
  • the sending unit 61 is configured to send an RRC message or a MAC message.
  • the UE may further include: a receiving unit 63, configured to receive an RRC message or a MAC message.
  • a receiving unit 63 configured to receive an RRC message or a MAC message.
  • the UE or the network side in the implementation system of the UE that sends the count response in the MBMS of the present invention may further include: a configuration unit, configured to configure a trigger condition for performing uplink feedback.

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Abstract

本发明公开了一种MBMS（多媒体广播多播业务）中UE（用户设备）发送计数响应的实现方法和系统，其中方法包括：在一定的周期内或者触发事件发生时，UE主动发起反馈过程，或者网络侧向UE发送反馈请求指示，UE根据上述指示向网络侧发送计数响应，网络侧根据UE计数响应对UE数量进行统计。根据本发明提供的方案，能使UE在多个MCCH的条件下根据反馈触发条件发送计数响应，实现网络侧对UE数量的正确统计，满足网络侧激活或者去激活MBSFN传输方式的要求。

Description

MBMS中用户设备发送计数响应的实现方法和系统 技术领域
本发明涉及多媒体广播多播业务多媒体广播多播业务 （ MBMS , Multimedia Broadcast Multicast Service ) 系统中用户设备 （ UE , User Equipment )业务信息上报技术，尤其涉及一种 MBMS中用户设备发送计数 响应的实现方法及系统。 背景技术
为了有效地利用移动网络资源， 第三代合作伙伴计划 （3GPP , 3rd Generation Partnership Project )提出了 MBMS业务， 该 MBMS业务是一种 从一个数据源向多个目标移动终端传送数据的技术， 实现了网络（包括核 心网和接入网） 资源的共享， 提高了网络资源尤其是空中接口资源的利用 率。
在长期演进 ( LTE, Long Term Evolution ) 系统中， 通知 UE (或称终 端）关于某个 MBMS业务将要发生变化，这些变化可以是会话开始（ session start ), 业务承载更新或会话停止（session stop )等， 可以先在物理下行控 制信道（ PDCCH, Physical Downlink Control Channel )上发送下行控制信息 ( DCI , Downlink Control Information ) 和 MBMS 无线网络临时标志符 ( M-RNTI, MBMS-Radio Network Temporary Identifier )。 UE根据 DCI中 的相关信息进一步去读取具体的多播控制信道（MCCH, Multicast Control CHannel ) 消息， 这称为 MCCH通知 ( notification )机制。 MCCH上将发 送具体的业务配置参数，如业务 ID、业务的无线链路控制 ( RLC, Radio Link Control ), 媒体访问控制 （MAC, Media Access Control ), 物理层配置参数 等。 在 LTE系统中， MBMS 有两种承载模式：广播模式和增强型广播模式。 由于没有多播模式， 因此网络侧并不能够获知 UE接收 /或者感兴趣接收哪 些 MBMS 业务。增强广播介于广播和多播之间， 吸收了广播中流程简单和 多播中资源优化的优点。 在使用 MBMS增强广播承载时， 只需要在应用层 上通过加入 /离开过程就可以实现从 UE 到广播组播业务中心 （BM-SC , Broadcast Multicast - Service Center ) 的注册 /注销， 无需在承载网络层进行 信令交互和信息存储。 增强广播是对广播的一种优化和扩展， 如在接入网， 增强广播不会向那些没有接收用户的小区发送数据。 对于增强型模式的 MBMS 业务， 在配置系统帧号（SFN, System Frame Number )和分配资源 时需要考虑接收 MBMS业务的 UE状态和数量，这样就需要接收 /或者感兴 趣接收 MBMS业务的 UE进行信息反馈，这称之为 MBMS的上行反馈。 3GPP RellO MBMS 为了激活 /去激活多媒体广播多播业务单频网 （MBSFN , Multimedia Broadcast multicast service Single Frequency Network )传输方式, 网络侧需要得到 UE的接收状态信息， 如正在接收给定 MBMS业务的 UE 数量信息， 因此需要一种机制用于触发 UE上报自身接收状态的信息。
为了使网络侧能够得到各个小区内有 MBMS 业务需求的用户数， MBMS 系统引入了计数（ counting )过程。
Counting过程是指一个 MBMS业务 Session开始时， 或者在 Session 进行过程中 （也称为 recounting ), 网络侧统计小区内接收和感兴趣接收某 MBMS业务用户数的过程， 用以确认是否釆用 MBSFN传输方式。 感兴趣 接收 MBMS业务是指： UE准备接收 MBSFN传输的 MBMS业务， UE监 听 MCCH通知消息。 网络侧准备发起计数 /重新计数过程时， 在 MCCH的 接入信息 （access info ) 中加入 MBMS业务的标识和接入概率。 之所以要 使用接入概率， 是因为并不需要所有的用户都建立连接进行反馈， 只要反 馈的数量可能达到门限就可以， 否则空闲 （Idle )状态用户比较多的时候会 引起上行拥塞。 发明内容
在对现有技术的研究和实践过程中， 发明人发现现有技术存在以下问 题： 3GPP RellO MBMS需要激活或者去激活 MBSFN传输方式的方法， 是 基于 UE计数响应的 ,但现有技术规范没有一种实现 UE发送计数响应的方 法， 即 UE 不知道何时发送接收状态信息以及发送哪些计数响应的相关信 息。
为了实现对 UE接收状态的统计，需要设计一种 UE进行上行反馈的实 现方案。
有鉴于此， 本发明的主要目的在于提供一种 MBMS中 UE发送计数响 应的实现方法及系统， UE根据所述方案将计数响应上报网络侧， 实现网络 侧激活或者去激活 MBMS业务的 MBSFN传输方式的要求。
为解决上述技术问题， 本发明的技术方案是这样实现的：
一种多媒体广播多播业务 MBMS中用户设备 UE发送计数响应的实现 方法， 包括： 设定 UE反馈的触发条件， UE根据所述触发条件向网络侧发 送计数响应， 网络侧根据 UE的所述计数响应对 UE数量进行统计， 并根据 统计结果激活或者去激活多播广播单频网 MBSFN传输。
所述触发条件包含以下至少一种： 周期性反馈， 事件触发反馈， 网络 侧发送反馈请求指示。
所述周期性反馈的反馈周期小于业务会话持续时间。
触发反馈的所述事件包含： 会话开始， 会话结束， 承载变更， 小区更 新， 小区切换。
所述反馈请求指示通过无线资源控制 RRC 信令或者媒体接入控制 MAC信令承载。
所述计数响应承载于： RRC连接请求信息中， 或者 RRC连接重配置完 成信息中， 或者 RRC连接重建请求信息， 或者 RRC连接重建完成信息， 或者 RRC连接建立完成信息， 或者小区更新信息中， 或者随机接入请求信 息中， 或者测量报告中， 或者媒体接入控制控制粒子 MAC CE消息中， 或 者专用信令中。
一种 MBMS中用户设备发送计数响应的实现系统， 包括：
UE, 用于根据设定的 UE反馈计数响应的触发条件向网络侧发送计数 口向应；
网络侧， 用于根据 UE计数响应对 UE数量进行统计， 并根据统计结果 激活或者去激活 MBSFN传输。
所述 UE包括： 触发单元， 用于根据反馈周期， 或者触发事件， 或者反 馈请求指示触发 UE发送计数响应； 反馈单元， 用于发送计数响应。
所述网络侧包括： 统计单元， 用于根据 UE计数响应对 UE数量进行统 计； 操作单元， 用于根据统计结果激活或者去激活 MBSFN传输。
所述网络侧进一步包括： 承载单元， 用于将反馈周期、 或者触发事件、 或者反馈请求指示承载于 RRC消息或者 MAC消息上； 发送单元， 用于发 送 RRC消息或 MAC消息；
所述 UE还包括： 接收单元， 用于接收 RRC消息或 MAC消息。
所述统计单元包括至少一个基站 eNB 和一个多小区 /多播协调实体 MCE, 所述操作单元包括一个 MCE, 其中， 所述 eNB, 用于根据 UE计数 响应对 UE数量进行统计，将统计结果上报给 MCE;所述 MCE,用于将 eNB 上报的统计结果进行汇总， 根据汇总的统计结果激活或者去激活 MBSFN 传输。
以上所述计数响应包含以下信息的至少一种： UE状态， MBSFN区域 标识 ID, 通知指示 notification indicator, MBMS业务 ID, UE ID, 物理多 播信道 PMCH ID, 会话 session ID, 逻辑信道标识 LCID , 业务列表索引， 反馈周期， 触发事件。
所述 UE状态包括：感兴趣接收，正在接收，停止接收，接收承载变更， 小区更新， 小区切换。
以上所述激活 MBSFN传输， 包括： 在 MBSFN区域中釆用 MBSFN方 式传输 MBMS业务； 所述去激活 MBSFN传输， 包括： 在 MBSFN区域中 停止釆用 MBSFN方式传输 MBMS业务。
本发明中， 网络侧指示 UE上报计数响应或者 UE主动发送计数响应。 本发明能使在多个 MCCH的条件下，根据反馈触发条件 UE发送计数响应， 实现网络侧对 UE数量的正确统计，满足激活或者去激活 MBSFN传输方式 的需求。 附图说明
图 1为本发明中上行反馈的实现方法流程示意图；
图 2为本发明中周期性发送计数响应的流程示意图；
图 3为本发明中事件触发上行反馈流程示意图；
图 4为本发明中网络侧触发反馈实施例三 /四的流程示意图；
图 5为本发明中 RRC IDLE态 UE的上行反馈的示意图；
图 6为本发明 MBMS中 UE发送计数响应的实现系统的组成结构示意 图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚明白， 以下举实施例并 参照附图， 对本发明进一步详细说明。
下面将结合附图和实施例对本发明进行详细描述。
本发明应用场景为： UE所在小区属于一个或多个 MBSFN区域， 每个 MBSFN区域对应一条 MCCH, 网络侧需要根据 UE接收状态的信息决定是 否激活 /去激活 MBSFN传输。
本发明针对 MBMS中对 UE反馈计数响应的触发过程， 网络侧发送上 行反馈的周期、 或者触发事件、 或者反馈请求指示， UE根据触发条件， 向 网络侧发送计数响应， 网络侧根据计数响应对 UE数量进行统计，根据统计 结果实现激活或者去激活 MBSFN传输方式的需求。
概括地，本发明 MBMS中 UE发送计数响应的实现方法，如图 1所示， 包括以下步骤：
步骤 1 , 设定 UE反馈计数响应的触发条件；
步骤 2, UE根据触发条件向网络侧发送计数响应；
步骤 3 , 网络侧根据 UE计数响应对 UE数量进行统计。
上述网络侧包括 eNB 和多 小 区 /多播协调实体 （ MCE , Multi-cell/Multicast Coordination Entity ); 其中， MCE为逻辑实体， MCE可 以单独存在， 或者作为其他网元的一部分存在， 如作为 eNB的一部分； 上 面步骤中 UE是指具有 MBMS接收能力的终端设备。 网络侧也可以是中继 ( Relay )、 或者家庭基站（HeNB, Home eNodeB )等。
上述步骤 1 中， 所述触发条件包括以下至少一种： 周期性触发， 事件 触发， 网络侧触发。 所述周期可以由 UE 自己选定， 或者网络侧通过 RRC 消息或者 MAC消息指示。 优选的， UE自己选定的周期可以是一个或多个 MCCH修改周期或者多播信道（MCH, Multicast CHannel )调度周期。 优 选的， 所述周期一般小于业务会话持续时间。 所述事件可以是： 会话开始， 或会话结束， 或承载变更， 或小区更新， 或小区切换。 所述网络侧触发可 以是网络侧通过 RRC消息或者 MAC消息指示 UE发送计数响应，优选的， 所述 RRC消息可以是 MCCH消息或者系统消息， 所述 MAC消息可以是 MAC控制粒子 （CE ) 消息。
上述步骤 2中， UE可以处于 RRC空闲态 （RRC IDLE状态）， 或者 RRC连接态 （ RRC CON ECTED状态）；
UE发送的计数响应包含但不限于以下的内容的一种或多种： UE状态， MBSFN区域标识（ ID ), 通知指示（ notification indicator ), MBMS业务 ID, UE ID,物理多播信道（ PMCH, Physical Multicast Channel )ID,会话（ session ) ID,逻辑信道标识（LCID , Logical Channel ID ), 业务列表索引，反馈周期， 触发事件。
上述 UE状态包括： 感兴趣接收， 正在接收， 停止接收， 小区更新， 小 区切换。
步骤 2中， UE如果在 RRC空闲态 （ RRC— IDLE状态， 简称 Idle态）， 则 UE首先发起随即接入过程，并发送 RRC连接建立请求， 同时在 RRC连 接建立请求信息中附加发送计数响应， 例如将 RRC 连接建立原因设置为 MBMS reception;
步骤 2中， UE如果处于 RRC连接态（ RRC— CONNECTED状态 , 简称 Connected态）， 则 UE在 RRC连接重配置完成信息中附加计数响应， 如将 RRC连接重配置原因设为 MBMS reception;
上述步骤 3中，网络侧根据 UE计数响应对 UE数量进行统计是指根据 UE计数响应得到正在接收 MBMS业务和 /或感兴趣接收 MBMS业务的 UE 数量信息； 如果在反馈过程中釆用了概率因子的设计， 则网络侧根据 UE 计数响应和概率因子可以得到 MBSFN区域中的 UE数量信息。
上述 UE包括正在接收 MBMS业务和 /或感兴趣接收 MBMS业务的 UE; 所述 UE发送的计数响应一般数据量较少， 因此可以在现有的 RRC信 令或 MAC CE信令或专用信令信息中携带发送，所述现有的 RRC信令包括 以下信令的一种或几种： RRC连接请求信息， RRC连接重配置完成信息， RRC连接重建请求信息， RRC连接重建完成信息， RRC连接建立完成信息， 小区更新信息， 随机接入请求信息， 测量报告。 网络侧在 MCCH或者系统消息上发送反馈请求指示信息可以是一条单 独的 RRC消息 （ message ), 或者是一条信息元 ( IE, Info. Element )。
以下， 通过具体实施例， 进一步阐明本发明技术方案的实质。
实施例一
本示例的应用场景是 UE周期性发起反馈过程，所述周期由 UE自己选 定。
图 2是本发明 UE周期性发起反馈的方法实施例一的流程示意图，如图 2所示， 本示例 UE周期性反馈的方法包括以下步骤：
步骤 101 , UE选定一个反馈周期， 在每个反馈周期内， UE向网络侧 发送计数响应；
所述反馈周期可以是规范中已经定义的周期， 优选的， 所述周期可以 是：一个或多个 MCCH修改周期，或者一个或多个多播信道调度周期（ MSP, MCH Scheduling Period ); 不同的 UE可以选择相同或不同的反馈周期； 为 了减少同时发起反馈的 UE数量， 在所述反馈周期内， UE可以随机选择发 送计数响应的时刻； 优选的， 在每个反馈周期内， 每个 UE发送一次计数响 应，如果网络侧在一个反馈周期内收到相同 UE的多个计数响应， 则只统计 一次。
所述反馈周期一般小于业务会话持续时间；
所述 UE可以是 RRC连接态或者 RRC空闲态；
所述网络侧一般包括 eNB和 MCE。
对于处于 RRC连接态的 UE,—般通过 RRC信令或者 MAC CE信令发 送计数响应； 如果在一个反馈周期内 UE被调度， 则 UE发送计数响应， 否 则 UE通过调度请求（ SR, Schedule Request )或者緩存状态报告 ( BSR, Buffer Status Report )请求上行资源用于发送计数响应。
优选的， 所述 RRC信令包括以下一种或几种： RRC连接请求信息， RRC连接重配置完成信息， RRC连接重建请求信息， RRC连接重建完成信 息， RRC连接建立完成信息， 小区更新信息， 随机接入请求信息， 测量报 告， 专用 RRC信令 , MAC CE消息。
处于 RRC空闲态的 UE, —般通过随机接入过程发送计数响应， 如在 消息 3 ( Msg3 ) 中通过 RRC连接请求信息携带 UE计数响应； 图 3给出了 RRC Idle UE的反馈示意图。 为了减少随机接入过程的冲突， 可以将一部分 随机接入前导（ Preamble )序列预约给 MBMS UE, 或者为 MBMS UE分配 与单播 UE不同的随机接入资源。
所述计数响应包括以下信息的一种或多种： UE状态， MBSFN区域 ID, 通知指示， MBMS业务 ID, UE ID, PMCH ID , 会话 ID , LCID, 业务列 表索引，反馈周期，触发事件。上述 UE状态包括： 感兴趣接收，正在接收， 停止接收， 小区更新， 小区切换。
步骤 102, 网络侧根据 UE计数响应对 UE数量进行统计；
网络侧根据一段时间内的 UE计数响应进行统计；
在上述一段时间内， 网络侧没有收到 UE计数响应， 则网络侧认为该 UE停止接收或不感兴趣接收 MBMS业务； 在上述一段时间内 , 网络侧收 到相同 UE的多个计数响应， 则网络侧可以只统计一次；
网络侧根据计数响应进行计数统计，并根据统计结果对 MBSFN传输进 行调整；
所述对 MBSFN调整是指网络侧激活或者去激活 MBSFN传输；所述激 活 MBSFN传输是指在 MBSFN区域中釆用 MBSFN方式传输 MBMS业务， 所述去激活 MBSFN传输是指在 MBSFN区域中停止釆用 MBSFN方式传输 MBMS业务。 所述去激活 MBSFN传输一般需要提前通知 UE, 而且一般不 能影响现有的业务会话过程。
网络侧包括至少一个 eNB和一个 MCE时， eNB根据 UE计数响应对 UE数量进行统计， 将统计结果上报给 MCE; MCE将 eNB上报的统计结果 进行汇总， 根据汇总的统计结果激活或者去激活 MBSFN传输。
对于 Idle态 UE反馈结束后，可以通过 RRC信令、或者其它高层信令、 或者专用信令将进入 Connected态的 UE转回 Idle态；
实施例一是 UE主动发起的周期性反馈过程，只要业务的会话持续时间 不小于反馈周期，该过程可以对 UE接收状态进行正确的统计， 而且实现简 单。
实施例二
本示例的场景是 UE在具体事件发生时发送上行计数响应，如图 4所示， 本示例 UE发送计数响应的实现方法包括以下步骤：
步骤 201 , UE选定触发反馈计数响应的事件， 当触发事件发生时， UE 向网络侧发送计数响应；
所述触发事件包括以下至少一种： 会话开始， 会话结束， 承载变更， 小区更新， 小区切换；
所述 UE可以是 RRC连接态或者 RRC空闲态；
所述网络侧一般包括 eNB和 MCE。
对于处于 RRC连接态的 UE,—般通过 RRC信令或者 MAC CE信令发 送计数响应； 触发事件出现时， 如果 UE有上行可用资源， 则 UE发送计数 响应， 否则 UE通过 SR或者 BSR请求上行资源用于发送计数响应。
优选的， 所述 RRC信令包括以下一种或几种： RRC连接请求信息， RRC连接重配置完成信息， RRC连接重建请求信息， RRC连接重建完成信 息， RRC连接建立完成信息， 小区更新信息， 随机接入请求信息， 测量报 告， 专用 RRC信令 , MAC CE消息。
处于 RRC空闲态的 UE, —般通过随机接入过程发送计数响应， 如在 消息 3中通过 RRC连接请求信息携带 UE计数响应； 为了减少随机接入过 程的冲突， 可以将一部分随机接入前导序列预约给 MBMS UE , 或者为 MBMS UE分配与单播 UE不同的随机接入资源。
所述计数响应包括以下信息的一种或多种： UE状态， MBSFN区域 ID, 通知指示， MBMS业务 ID, UE ID, PMCH ID , 会话 ID , LCID, 业务列 表索引，反馈周期，触发事件。上述 UE状态包括： 感兴趣接收，正在接收， 停止接收， 小区更新， 小区切换。
步骤 202 , 网络侧根据 UE计数响应对 UE数量进行统计；
网络侧根据一段时间内的 UE计数响应进行统计；所述一段时间一般由 网络侧根据需要设定；
在上述一段时间内，如果网络侧收到相同 UE的多个计数响应，则网络 侧可以只统计一次；
网络侧根据计数响应进行计数统计，并根据统计结果对 MBSFN传输进 行调整；
所述对 MBSFN调整是指网络侧激活或者去激活 MBSFN传输；所述激 活 MBSFN传输是指在 MBSFN区域中釆用 MBSFN方式传输 MBMS业务， 所述去激活 MBSFN传输是指在 MBSFN区域中停止釆用 MBSFN方式传输 MBMS业务。 所述去激活 MBSFN传输一般需要提前通知 UE, 而且一般不 能影响现有的业务会话过程。
对于 Idle态 UE反馈结束后，可以通过 RRC信令、或者其它高层信令、 或者专用信令将进入 Connected态的 UE转回 Idle态；
实施例二是 UE主动发起的事件触发反馈过程，该过程可以对 UE接收 状态进行实时正确的统计， 而且实现简单。
实施例三
本示例的场景是网络侧发送反馈请求指示， UE根据上述指示发送计数 响应，如图 5所示，本示例网络侧请求 UE反馈计数响应的实现方法包括以 下步骤：
步骤 301 , 网络侧通过 RRC消息或者 MAC CE消息向 UE发送反馈请 求指示；
优选的， 所述 RRC消息可以是 MCCH消息或系统消息； 所述 RRC消 息可以是一条单独的 RRC message或者一条 IE;
所述反馈请求指示一般包括 MBMS业务 ID、 或者 MBMS会话 ID、 或 者指示 MBMS会话的位映射（ bitmap )信息； 为了减少同时反馈的 UE数 量， 反馈请求指示一般还包括概率因子。
所述 UE可以是 RRC连接态或者 RRC空闲态； 针对 RRC连接态 UE 和 RRC空闲态 UE, 上述概率因子一般分别设置为不同的数值。
所述网络侧一般包括 eNB和 MCE。
步骤 302, 根据反馈请求指示， UE向网络侧发送计数响应；
UE通过读取 RRC消息或 MAC CE消息获取反馈请求指示； 对于已经 开始的 MBMS业务，UE可以直接获取反馈请求指示；对于未开始的 MBMS 业务， UE—般需要相应的机制监听反馈请求指示， 如监听 MCCH通知信 息或寻呼信息。
对于处于 RRC连接态的 UE,—般通过 RRC信令或者 MAC CE信令发 送计数响应； 接收到反馈请求指示时， 如果 UE有上行可用资源， 则 UE发 送计数响应， 否则 UE通过 SR或者 BSR请求上行资源用于发送计数响应。
优选的， 所述 RRC信令包括以下一种或几种： RRC连接请求信息， RRC连接重配置完成信息， RRC连接重建请求信息， RRC连接重建完成信 息， RRC连接建立完成信息， 小区更新信息， 随机接入请求信息， 测量报 告， 专用 RRC信令 , MAC CE消息。
处于 RRC空闲态的 UE, —般通过随机接入过程发送计数响应， 如在 消息 3中通过 RRC连接请求信息携带 UE计数响应； 为了减少随机接入过 程的冲突， 可以将一部分随机接入前导序列预约给 MBMS UE , 或者为 MBMS UE分配与单播 UE不同的随机接入资源。
所述计数响应包括以下信息的一种或多种： UE状态， MBSFN区域 ID, 通知指示， MBMS业务 ID, UE ID, PMCH ID , 会话 ID , LCID, 业务列 表索引，反馈周期，触发事件。上述 UE状态包括： 感兴趣接收，正在接收， 停止接收， 小区更新， 小区切换。
步骤 303 , 网络侧根据 UE计数响应对 UE数量进行统计；
网络侧根据一段时间内的 UE计数响应进行统计；所述一段时间一般由 网络侧根据需要设定；
在上述一段时间内，如果网络侧收到相同 UE的多个计数响应，则网络 侧可以只统计一次；
网络侧根据计数响应对 UE数量进行统计， 并根据统计结果对 MBSFN 传输进行调整；
所述对 MBSFN调整是指网络侧激活或者去激活 MBSFN传输；所述激 活 MBSFN传输是指在 MBSFN区域中釆用 MBSFN方式传输 MBMS业务， 所述去激活 MBSFN传输是指在 MBSFN区域中停止釆用 MBSFN方式传输 MBMS业务。 所述去激活 MBSFN传输一般需要提前通知 UE, 而且一般不 能影响现有的业务会话过程。
对于 Idle态 UE反馈结束后，可以通过 RRC信令、或者其它高层信令、 或者专用信令将进入 Connected态的 UE转回 Idle态；
实施例三是网络侧发起的反馈过程，该过程可以根据需要对 UE接收状 态进行统计， 但实现较为复杂。
实施例四
本示例的场景是网络侧发送反馈请求指示， UE根据上述指示发送计数 响应，如图 5所示，本示例网络侧请求 UE反馈计数响应的实现方法包括以 下步骤：
步骤 401 , 网络侧通过 RRC消息或者 MAC CE消息向 UE发送反馈请 求指示；
优选的， 所述 RRC消息可以是 MCCH消息或系统消息； 所述 RRC消 息可以是一条单独的 RRC message或者一条 IE;
所述反馈请求指示一般包括 MBMS业务 ID、 或者 MBMS会话 ID、 或 者指示 MBMS会话的位映射信息， 以及反馈周期或反馈触发事件； 为了减 少同时反馈的 UE数量， 反馈请求指示一般还包括概率因子。
所述 UE可以是 RRC连接态或者 RRC空闲态； 针对 RRC连接态 UE 和 RRC空闲态 UE, 上述概率因子一般分别设置为不同的数值。
所述网络侧一般包括 eNB和 MCE。
步骤 402, 根据反馈请求指示， UE向网络侧发送计数响应；
UE通过读取 RRC消息或 MAC CE消息获取反馈请求指示； 对于已经 开始的 MBMS业务，UE可以直接获取反馈请求指示；对于未开始的 MBMS 业务， UE—般需要相应的机制监听反馈请求指示， 如监听 MCCH通知信 息或寻呼信息。
对于处于 RRC连接态的 UE,—般通过 RRC信令或者 MAC CE信令发 送计数响应； 接收到反馈请求指示时， 如果 UE有上行可用资源， 则 UE发 送计数响应， 否则 UE通过 SR或者 BSR请求上行资源用于发送计数响应。
优选的， 所述 RRC信令包括以下一种或几种： RRC连接请求信息， RRC连接重配置完成信息， RRC连接重建请求信息， RRC连接重建完成信 息， RRC连接建立完成信息， 小区更新信息， 随机接入请求信息， 测量报 告， 专用 RRC信令 , MAC CE消息。
处于 RRC空闲态的 UE, —般通过随机接入过程发送计数响应， 如在 消息 3中通过 RRC连接请求信息携带 UE计数响应； 为了减少随机接入过 程的冲突， 可以将一部分随机接入前导序列预约给 MBMS UE , 或者为 MBMS UE分配与单播 UE不同的随机接入资源。
所述 UE在首次发送计数响应后 ,一般根据反馈周期或者反馈触发事件 向网络侧进行周期性反馈或者事件触发反馈。
所述计数响应包括以下信息的一种或多种： UE状态， MBSFN区域 ID, 通知指示， MBMS业务 ID, UE ID, PMCH ID , 会话 ID , LCID, 业务列 表索引，反馈周期，触发事件。上述 UE状态包括： 感兴趣接收，正在接收， 停止接收， 小区更新， 小区切换。
步骤 403 , 网络侧根据 UE计数响应对 UE数量进行统计；
网络侧根据一段时间内的 UE计数响应进行统计；所述一段时间一般由 网络侧根据需要设定； 如果设定了反馈周期， 所述一段时间一般不小于反 馈周期， 反馈周期一般小于业务会话持续时间；
在上述一段时间内，如果网络侧收到相同 UE的多个计数响应，则网络 侧可以只统计一次；
网络侧根据计数响应进行计数统计，并根据统计结果对 MBSFN传输进 行调整；
所述对 MBSFN调整是指网络侧激活或者去激活 MBSFN传输；所述激 活 MBSFN传输是指在 MBSFN区域中釆用 MBSFN方式传输 MBMS业务， 所述去激活 MBSFN传输是指在 MBSFN区域中停止釆用 MBSFN方式传输 MBMS业务。 所述去激活 MBSFN传输一般需要提前通知 UE, 而且一般不 能影响现有的业务会话过程。
对于 Idle态 UE反馈结束后，可以通过 RRC信令、或者其它高层信令、 或者专用信令将进入 Connected态的 UE转回 Idle态；
实施例四是网络侧发起的反馈过程， 该实施例不同于实施例 3 的地方 是， UE首次发送计数响应后， 需要根据反馈周期或者反馈触发事件继续进 行反馈， 网络侧可以控制反馈过程， 但实现较为复杂。
本发明 MBMS中 UE发送计数响应的实现系统包括 UE和网络侧 , 其 中， UE用于根据设定的 UE反馈计数响应的触发条件向网络侧发送计数响 应； 网络侧用于根据 UE计数响应对 UE数量进行统计， 并根据统计结果激 活或者去激活 MBSFN传输。
其中， UE可以包括触发单元 62和反馈单元 64, 如图 6所示， 其中， 触发单元 62 用于根据反馈周期， 或者触发事件， 或者反馈请求指示触发 UE发送计数响应； 反馈单元 64用于发送计数响应。
网络侧可以包括： 统计单元 65和操作单元 66, 统计单元 65用于根据 UE计数响应对 UE数量进行统计； 操作单元 66用于根据统计结果激活或 者去激活 MBSFN传输。所述统计单元 65包括至少一个 eNB和一个 MCE; 所述操作单元 66包括一个 MCE。 eNB用于根据 UE计数响应对 UE数量进 行统计， 将统计结果上 ^艮给 MCE; MCE用于将 eNB上 ^艮的统计结果进行 汇总， 根据汇总的统计结果激活或者去激活 MBSFN传输。
网络侧还可以包括承载单元 60和发送单元 61 , 如图 6所示， 其中， 承载单元 60, 用于将反馈周期、 或者触发事件、 或者反馈请求指示承 载于 RRC消息或者 MAC消息上； 其中 , 所述 RRC消息可以是 MCCH消 息或者系统消息 , 所述 MAC消息可以是 MAC CE消息；
发送单元 61 , 用于发送 RRC消息或 MAC消息；
UE还可以包括： 接收单元 63 , 用于接收 RRC消息或 MAC消息。 如图 6所示， 本发明 MBMS中 UE发送计数响应的实现系统中的 UE 或网络侧还可以包括： 配置单元， 用于配置进行上行反馈的触发条件。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、一种多媒体广播多播业务 MBMS中用户设备 UE发送计数响应的实 现方法， 其特征在于， 包括：
设定 UE反馈的触发条件， UE根据所述触发条件向网络侧发送计数响 应， 网络侧根据 UE的所述计数响应对 UE数量进行统计， 并根据统计结果 激活或者去激活多媒体广播多播业务单频网 MBSFN传输。
2、 根据权利要求 1所述的方法， 其特征在于， 所述触发条件包含以下 至少一种： 周期性反馈， 事件触发反馈， 网络侧发送反馈请求指示。
3、 根据权利要求 2所述的方法， 其特征在于， 所述周期性反馈的反馈 周期小于业务会话持续时间。
4、 根据权利要求 2所述的方法， 其特征在于， 触发反馈的所述事件包 含： 会话开始， 会话结束， 承载变更， 小区更新， 小区切换。
5、 根据权利要求 2所述的方法， 其特征在于， 所述反馈请求指示通过 无线资源控制 RRC信令或者媒体接入控制 MAC信令承载。
6、 根据权利要求 1至 5任一项所述的方法， 其特征在于， 所述计数响 应包含以下信息的至少一种： UE状态， MBSFN 区域标识 ID , 通知指示 notification indicator, MBMS业务 ID , UE ID, 物理多播信道 PMCH ID, 会话 session ID, 逻辑信道标识 LCID , 业务列表索引， 反馈周期， 触发事 件。
7、 根据权利要求 6所述的方法， 其特征在于， 所述 UE状态包括： 感 兴趣接收， 正在接收， 停止接收， 接收承载变更， 小区更新， 小区切换。
8、 根据权利要求 6所述的方法， 其特征在于， 所述计数响应承载于： RRC连接请求信息中， 或者 RRC连接重配置完成信息中， 或者 RRC连接 重建请求信息， 或者 RRC连接重建完成信息， 或者 RRC连接建立完成信 息， 或者小区更新信息中， 或者随机接入请求信息中， 或者测量报告中， 或者媒体接入控制控制粒子 MAC CE消息中， 或者专用信令中。
9、 根据权利要求 1至 5任一项所述的方法， 其特征在于，
所述激活 MBSFN传输， 包括： 在 MBSFN区域中釆用 MBSFN方式传 输 MBMS业务；
所述去激活 MBSFN传输， 包括： 在 MBSFN区域中停止釆用 MBSFN 方式传输 MBMS业务。
10、 一种 MBMS中用户设备发送计数响应的实现系统， 其特征在于， 所述系统包括：
UE, 用于根据设定的 UE反馈计数响应的触发条件向网络侧发送计数 口向应；
网络侧， 用于根据 UE计数响应对 UE数量进行统计， 并根据统计结果 激活或者去激活 MBSFN传输。
11、 根据权利要求 10所述的系统， 其特征在于， 所述 UE包括： 触发单元， 用于根据反馈周期， 或者触发事件， 或者反馈请求指示触 发 UE发送计数响应；
反馈单元， 用于发送计数响应。
12、 根据权利要求 10或 11所述的系统， 其特征在于， 所述网络侧包 括：
统计单元， 用于根据 UE计数响应对 UE数量进行统计；
操作单元， 用于根据统计结果激活或者去激活 MBSFN传输。
13、 根据权利要求 12所述的系统， 其特征在于，
所述网络侧进一步包括：
承载单元， 用于将反馈周期、 或者触发事件、 或者反馈请求指示承载 于 RRC消息或者 MAC消息上；
发送单元， 用于发送 RRC消息或 MAC消息； 所述 UE还包括： 接收单元 , 用于接收 RRC消息或 MAC消息。
14、 根据权利要求 12所述的系统， 其特征在于， 所述统计单元包括至 少一个基站 eNB和一个多小区 /多播协调实体 MCE, 所述操作单元包括一 个 MCE, 其中，
所述 eNB, 用于根据 UE计数响应对 UE数量进行统计， 将统计结果上 报给 MCE;
所述 MCE, 用于将 eNB上报的统计结果进行汇总，根据汇总的统计结 果激活或者去激活 MBSFN传输。
15、 根据权利要求 10或 11所述的系统， 其特征在于， 所述计数响应 包含以下信息的至少一种： UE状态， MBSFN区域 ID , 通知指示， MBMS 业务 ID, UE ID, PMCH ID , 会话， LCID, 业务列表索引， 反馈周期， 触 发事件。
16、 根据权利要求 10或 11所述的系统， 其特征在于，
所述激活 MBSFN传输， 包括： 在 MBSFN区域中釆用 MBSFN方式传 输 MBMS业务；
所述去激活 MBSFN传输， 包括： 在 MBSFN区域中停止釆用 MBSFN 方式传输 MBMS业务。
PCT/CN2011/072132 2010-06-29 2011-03-24 Mbms中用户设备发送计数响应的实现方法和系统 WO2012000332A1 (zh)

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