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WO2012113199A1 - Procédé et système permettant à un élément de réseau d'obtenir des informations d'état de réception d'un élément d'utilisateur - Google Patents

Procédé et système permettant à un élément de réseau d'obtenir des informations d'état de réception d'un élément d'utilisateur Download PDF

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Publication number
WO2012113199A1
WO2012113199A1 PCT/CN2011/077497 CN2011077497W WO2012113199A1 WO 2012113199 A1 WO2012113199 A1 WO 2012113199A1 CN 2011077497 W CN2011077497 W CN 2011077497W WO 2012113199 A1 WO2012113199 A1 WO 2012113199A1
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WO
WIPO (PCT)
Prior art keywords
mbms
network element
receiving
status information
target cell
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2011/077497
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English (en)
Chinese (zh)
Inventor
杜晓
王斌
苟伟
马子江
许辉
赵斌
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ZTE Corp
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ZTE Corp
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
Application filed by ZTE Corp filed Critical ZTE Corp
Publication of WO2012113199A1 publication Critical patent/WO2012113199A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0007—Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H04W36/0044—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information of quality context information

Definitions

  • the present invention relates to the field of mobile multimedia communications, and in particular, to a method and system for a network element to acquire reception status information of a user equipment. Background technique
  • the 3rd Generation Partnership Project 3rd Generation Partnership Project proposes Multimedia Broadcast Multicast Service (MBMS), which is a data source from multiple sources to multiple targets.
  • MBMS Multimedia Broadcast Multicast Service
  • the technology for transmitting data by the mobile terminal realizes the sharing of network resources (including the core network and the access network), and improves the utilization of network resources (especially air interface resources).
  • MBMS defined by 3GPP can not only realize plain text low-rate message broadcast and multicast, but also enable high-speed multimedia service broadcast and multicast, providing a variety of rich video, audio and multimedia services, which undoubtedly conforms to future mobile
  • the trend of data development provides a better business prospect for the development of 3G.
  • MBMS technology has been introduced in the R9 version of LTE and has been implemented in the R10 version. Strong.
  • the control plane and the user plane of the MBMS in LTE are separated, the control plane transmits the control signaling of the MBMS, and the user plane transmits the data of the MBMS.
  • the evolved base station (eNB, evolved Node B) (hereinafter referred to as the base station) transmits the MBMS control information to the user equipment (UE, User Equipment) through the Broadcast Control Channel (BCCH, Broadcast Control Channel), and the UE according to the MBMS control information received from the BCCH in the MBMS
  • the configuration information of the MBMS is received on the control channel (MCCH, Multicast Control Channel), and then the UE can read the MBMS sent by the base station from the MBMS Traffic Channel (MTCH) according to the MBMS configuration information on the MCCH.
  • the MCCH and MTCH are finally multiplexed onto a Multicast Channel (MCH, Multicast Channel) for point-to-multipoint (PTM) transmission.
  • the scheduling period of the MCH is at least 80 ms, and is transmitted in the form of an MBMS Single Frequency Network (MBSFN) subframe.
  • the UE or the terminal that receives the MBMS may be in two states, one state is a Radio Resource Control (RRC) connection state (referred to as a connected state), and the other is an RRC idle state (referred to as an idle state).
  • RRC Radio Resource Control
  • the UE receives the unicast service the UE is in the connected state, and the UE in the idle state does not establish an RRC connection with the network side, and the UE in the connected state establishes an RRC connection with the network side.
  • the base station will configure a measurement gap for the UE, the measurement interval is 6ms in length and the period is 80ms.
  • FIG. 1 is a measurement interval in the prior art. Schematic diagram of the distribution of MBSFN subframes, as shown in FIG. 1, the shaded hatching indicates MBSFN radio frames, the grid shading indicates MBSFN radio subframes, and radio frame 2 and radio frame 4 are MBSFN radio frames, where, in radio frame #2 A total of 10 subframes from 0 to 9 are included, and subframe 1, subframe 3, subframe 5, and subframe 6 are MBSFN subframes for transmitting MBMS services.
  • the measurement interval may be configured to the radio frame for transmitting the MBMS.
  • the base station will have subframe 0 After a total of 6 subframes are allocated to the measurement interval of the UE, the UE cannot receive the MBMS on the subframe 1, the subframe 3, and the subframe 5.
  • the default measurement interval has a higher priority than the MBMS, because the base station First make sure that the unicast service is not affected). Therefore, the base station must know the reception status of the MBMS of the UE, and ensure that the UE receives the MBMS in the measurement interval, and avoid conflicts between the two.
  • the handover of the UE in the connected state is controlled by the base station.
  • the current handover principle is: The base station controls the UE measurement, and then comprehensively considers the signal quality and service load of the neighboring cell according to the measurement result of the UE, and switches the UE to a suitable cell.
  • the base station does not know the UE's reception status to the MBMS. Therefore, the cell selected by the base station for the UE may not be able to provide the MBMS that the UE is receiving.
  • the UE When the UE is handed over by the base station to a cell that cannot provide MBMS, the UE will not be able to continue receiving the MBMS. Therefore, the continuity of the UE receiving the MBMS cannot be guaranteed, and the UE user experience will be greatly affected.
  • the base station does not know the current MBMS reception status of the UE, and may configure the measurement interval on the subframe in which the MBMS service is being sent, so that the UE receives the The MBMS is interrupted.
  • the base station does not know the current MBMS reception status of the UE, and cannot ensure that the UE that is receiving the MBMS preferentially switches to the cell that is transmitting the service, so that the UE The continuity of receiving MBMS is not well guaranteed.
  • the base station can know the current MBMS reception status information of the UE as soon as possible, so that when the measurement interval is configured for the UE and the target cell is determined, the UE can currently receive the reception.
  • MBMS try to ensure continuous reception of the MBMS by the UE to improve the continuity of the MBMS and the user experience of the UE. Summary of the invention
  • the main purpose of the present invention is to provide a method and system for a network element to obtain receiving status information of a user equipment, and the network element can know in a timely manner that the cell controlled by the network is in a connected state.
  • the current MBMS reception status information of the UE is to provide a method and system for a network element to obtain receiving status information of a user equipment, and the network element can know in a timely manner that the cell controlled by the network is in a connected state.
  • the present invention provides a method for a network element to obtain receiving status information of a user equipment, where the method includes:
  • the user equipment When the user equipment (UE) starts to switch to the target cell, it sends the current status information of the multimedia broadcast multicast service (MBMS) to the network element of the target cell;
  • MBMS multimedia broadcast multicast service
  • the network element of the source cell sends the current MBMS reception status information of the UE to the network element of the target cell.
  • the UE is a UE that has an MBMS receiving capability and/or is receiving an MBMS or is interested in receiving an MBMS and is in a Radio Resource Control Protocol (RRC) connected state.
  • RRC Radio Resource Control Protocol
  • the current MBMS reception status information of the UE is information of an MBMS that the UE is currently receiving or interested in receiving;
  • the MBMS information that the UE is currently receiving or interested in receiving includes whether the current UE is receiving the MBMS, and/or the MBMS being received, and/or the MBSFN area of the MBMS, and/or the configuration information of the transmitted MBMS.
  • the network element that sends the current MBMS reception status information to the target cell is:
  • the UE uses the message to send the current MBMS reception status information to the network element of the target cell.
  • the message is an RRC Connection Reconfiguration Complete message or an RRC Connection Reestablishment Request message or an RRC Connection Reestablishment Complete message or a new RRC message.
  • the network element of the source cell sends the current MBMS receiving status information of the UE to the target cell:
  • the NE of the source cell passes the message on the X2 interface or uses the forwarding mode to forward the current UE.
  • the receiving status information of the MBMS is sent to the network element of the target cell.
  • the message on the X2 interface is a handover request message, or an establishment request message of the X2 interface, a base station configuration update message, or a mobility change request message, or an MBMS service reception status report message;
  • the forwarding mode is that the network element of the source cell sends the message of the current MBMS receiving status information of the UE to the mobility management node (MME) through the S1 interface, and then forwarded by the MME to the S1 interface between the target network element and the target network element.
  • MME mobility management node
  • the network element of the target cell, or the network element of the source cell sends a message carrying the current MBMS receiving status information of the UE to other neighboring network elements through the X2 interface, and then the neighboring network element sends the message through the X2 interface.
  • the network element of the target cell or the network element of the source cell, sends a message carrying the current MBMS reception status information of the UE to the multi-cell/multicast cooperative entity (MCE) through the M2 interface, and then the MCE forwards the message to the target cell network.
  • MCE multi-cell/multicast cooperative entity
  • the present invention further provides a system for a network element to obtain the receiving status information of the user equipment, where the system includes: a UE, a network element of the target cell, where
  • the UE when it is used to start the handover to the target cell, sends the current MBMS reception status information to the network element of the target cell;
  • the network element of the target cell is configured to receive the current MBMS receiving status information sent by the UE.
  • the UE is a UE that has an MBMS receiving capability and/or is receiving an MBMS or is interested in receiving an MBMS and is in an RRC connected state;
  • the current MBMS reception status information of the UE is information of an MBMS that the UE is currently receiving or interested in receiving;
  • the information of the MBMS that the UE is currently receiving or interested in receiving includes whether the current UE is receiving the MBMS, and/or the MBMS being received, and/or the MBSFN area of the MBMS, and/or the configuration information of the transmitted MBMS.
  • the present invention further provides a system for acquiring, by a network element, the receiving status information of the user equipment, where the system includes: a network element of the source cell, and a network element of the target cell;
  • the network element of the source cell is used to send the current MBMS reception status information of the UE to the network element of the target cell when the UE starts to switch to the target cell.
  • the network element of the target cell is configured to receive the current MBMS receiving status information sent by the network element of the source cell.
  • the UE is a UE that has an MBMS receiving capability and/or is receiving an MBMS or is interested in receiving an MBMS and is in an RRC connected state;
  • the current MBMS reception status information of the UE is information of an MBMS that the UE is currently receiving or interested in receiving;
  • the MBMS information that the UE is currently receiving or interested in receiving includes whether the current UE is receiving the MBMS, and/or the MBMS being received, and/or the MBSFN area of the MBMS, and/or the configuration information of the transmitted MBMS.
  • the method and system for acquiring the receiving status information of the user equipment by the network element provided by the present invention, when the UE starts to switch to the target cell, the current MBMS receiving status information is sent to the network element of the target cell; or the UE starts from the source cell.
  • the network element of the source cell sends the current MBMS reception status information of the UE to the network element of the target cell, and the network element can timely know the current MBMS reception status information of the UE in the connected state in the cell controlled by itself.
  • the network element of the UE or the source cell reports the MBMS information that the UE is receiving or interested in receiving, by the network element of the target cell, so that the network element of the target cell obtains the current MBMS of the UE.
  • the UE may be preferentially selected to maintain the continuity of the service, and the measurement interval may be configured on the non-MBMS service frame according to the current MBMS reception status information of the UE, thereby avoiding the UE.
  • the measurement interval conflicts with the reception of the MBMS, so that the UE can be avoided.
  • the interruption of the received MBMS thereby improving the continuity of the UE receiving service, and bringing a good user experience.
  • 1 is a schematic diagram of distribution of measurement intervals and MBSFN subframes in the prior art
  • Embodiment 2 is a schematic flowchart of Embodiment 1 of a method for implementing a network element to obtain receiving status information of a user equipment according to the present invention
  • Embodiment 3 is a schematic flowchart of Embodiment 2 of a method for implementing a method for a network element to acquire receiving status information of a user equipment according to the present invention
  • FIG. 4 is a schematic structural diagram of a system for acquiring a receiving status information of a user equipment by a network element according to the present invention
  • FIG. 5 is a schematic structural diagram of a system for acquiring a receiving status information of a user equipment by the network element of the present invention.
  • the basic idea of the present invention is: when the UE starts to switch to the target cell, the current MBMS reception status information is sent to the network element of the target cell; or when the UE starts to switch to the target cell, the source cell's network element will The current MBMS reception status information of the UE is sent to the network element of the target cell.
  • FIG. 2 is a schematic flowchart of the first embodiment of the method for the network element to obtain the receiving status information of the user equipment, as shown in FIG. Includes the following steps:
  • Step 201 The UE starts to switch to the target cell.
  • the UE refers to a UE that has an MBMS receiving capability and/or is receiving an MBMS or is interested in receiving an MBMS, and is in an RRC connected state.
  • the target cell refers to a new cell where the UE is switched. The UE starts to switch to the target cell, which means that the network element of the target cell sends a measurement control command for handover to the UE, and the preparation process of starting the handover; the target cell
  • the network element refers to a network element that controls the target cell after the UE is switched, and is also referred to as a target network element, such as a base station.
  • the UE starts to handover to the target cell, including the UE switching from the source cell to the target cell, or the UE accessing the cell for the first time (for convenience of description, the cell is also referred to as the target cell in this case);
  • the first time the UE searches for and accesses the target cell the UE synchronizes with the target network element for the first time and reports its own receiving status information, for example, when the UE is turned off, the mobile device is turned on, the UE is powered on, or the UE enters the target without the signal.
  • the cell, and receiving the system broadcast message in the target cell for the first time also needs to report its MBMS reception status information to the target network element.
  • Step 202 The UE sends the current MBMS receiving status information to the network element of the target cell.
  • the UE sends the current MBMS reception status information to the target network element by using a message, where the message is an existing RRC message, for example, an RRC Connection Recon figuration Complete message or an RRC connection re-establishment.
  • Requesting RRC Connection Reestablishment Request
  • RRC Connection Reestablishment Complete RRC Connection Reestablishment Complete
  • the message is a new RRC message
  • the UE uses the foregoing message to carry the receiving status information of the UE; After the message sent by the UE, determining whether to send the feedback information according to the type of the message, if the UE does not receive the feedback information, the message may be resent;
  • the current MBMS reception status information of the UE is sent to the target network element as a new information element (IE, Information Element) in the existing RRC message, and the current MBMS reception status information of the UE.
  • IE Information Element
  • the information about the MBMS that the UE is currently receiving or interested in receiving when the message is a new RRC message, the newly added RRC message is only used to carry the current MBMS receiving status information of the UE; the UE is currently receiving or interested.
  • the received MBMS information refers to whether the current UE is receiving the MBMS, and/or the MBMS being received, and/or the MBSFN area i of the MBMS, and/or the configuration information of the transmitted MBMS, etc.; for example, the UE is currently receiving Or the information of the MBMS that is of interest to receive may include One or more of the following information: MBMS Service ID, MBMS Session ID, MBSFN area ID, MBSFN Area Configuration, MBMS point-to-multipoint Wireless carrier configuration (MBMS PTM radio bearer configuration);
  • the target network element refers to the network element where the cell currently camped by the UE is located, for example, when the UE is powered off, moves to the target cell, then powers on again, and camps on the target cell.
  • the MME saves the context information of the UE for the first time. If the UE is receiving the MBMS or is interested in receiving the MBMS, the UE may also report its own receiving status information.
  • the target network element stores the received receiving status information, which is used as the reference information used by the target network element to switch or configure the measurement interval for the UE next time.
  • the target network element controls the UE to switch to the new cell, it first queries the UE to receive the current receiving. Or the information about the received MBMS, according to the information, try to control the UE to switch to the cell that can continue to provide the MBMS, or when the target network element configures the measurement interval for the UE, the measurement interval can be configured in the non-MBMS as much as possible.
  • the UE's measurement interval is avoided to collide with the MBMS that the UE is currently receiving or interested in receiving, so as to improve the UE's ability to continuously receive services.
  • the UE reports the MBMS information that is being received or is of interest to the target network element, so that the target network element obtains the current MBMS reception status information of the UE, and thus
  • the UE may preferentially select a cell that can maintain service continuity in a handover process; and when the cell is configured with the measurement interval, the measurement interval may be configured in a non-MBMS service frame according to the current MBMS reception status information of the UE.
  • the collision between the measurement interval of the UE and the reception of the MBMS is avoided.
  • the interruption of the MBMS that the UE is receiving can be avoided by the method provided in this embodiment, so as to improve the continuity of the UE receiving service and bring the user the continuity. Good experience.
  • FIG. 3 is a schematic diagram of a method for implementing a network element to obtain receiving status information of a user equipment according to the present invention
  • Step 301 The UE starts to switch from the source cell to the target cell.
  • the UE refers to a UE that has an MBMS receiving capability and/or is receiving an MBMS or is interested in receiving an MBMS, and is in an RRC connected state;
  • the source cell refers to a cell in which the UE is before the handover, and the target cell Refers to the new cell where the UE is switched after the UE is switched.
  • the UE starts to switch to the target cell from the source cell.
  • the base station of the source cell sends a measurement control command to the UE to control the UE to switch to the target cell.
  • the triggering condition for example, the signal quality of the base station of the source cell is lower than a certain level, or the signal quality of the base station of the source cell is lower than the signal quality of the base station of the neighboring cell.
  • Step 302 The network element of the source cell sends the current MBMS receiving status information of the UE to the network element of the target cell.
  • the network element of the source cell sends the current MBMS reception status information of the UE to the network element of the target cell by using the message on the X2 interface or by using the forwarding mode.
  • the source cell that is, the source network element, refers to the UE handover.
  • the network element of the cell in the previous cell such as a base station (eNB), a Mobility Management Entity (MME), or a multi-cell/Multicast Coordination Entity (MCE), the network element of the target cell
  • the target network element refers to the network element of the target cell after the UE is switched, such as a base station (eNB), an MME, or an MCE;
  • the current MBMS reception status information of the UE is a newly added IE, specifically the information of the MBMS that the UE is currently receiving or interested in receiving; the MBMS information that the UE is currently receiving or interested in receiving refers to whether the current UE is receiving the MBMS.
  • the information of the MBMS that the UE is currently receiving or interested in receiving may include one of the following information: Or multiple: MBMS Service ID, MBMS session ID, MBSFN area ID, MBSFN Area Configuration, MBMS point-to-multipoint radio bearer configuration (MBMS) PTM radio Bearer configuration )
  • the message on the X2 interface may be an existing message or a new message, where the existing message may be a Handover Request message, or an Setup Request message of the X2 interface, or a base station configuration update (eNB Configuration) Update) message, or Mobility Change Reques message, etc.; the new message may be an MBMS Service Reception Status Report message; the target network element may determine whether the message is received according to the type of the received message Give feedback;
  • the existing message may be a Handover Request message, or an Setup Request message of the X2 interface, or a base station configuration update (eNB Configuration) Update) message, or Mobility Change Reques message, etc.
  • the new message may be an MBMS Service Reception Status Report message
  • the target network element may determine whether the message is received according to the type of the received message Give feedback;
  • the source NE sends the message to the target NE through the X2 interface.
  • the message can be sent to the destination network through forwarding.
  • the forwarding mode is that the source network element sends the message of the current MBMS receiving status information of the UE to the MME through the S1 interface, and then forwards the message to the target network element, or source, by the MME through the S1 interface with the target network element.
  • the network element sends the message carrying the current MBMS receiving status information of the UE to other neighboring network elements through the X2 interface, and then the neighboring network element sends the message to the target network element through the X2 interface, or the source network element also
  • the message carrying the current MBMS receiving status information of the UE may be sent to the MCE through the M2 interface, and then forwarded by the MCE to the target network element; where the source network element and the target network element are respectively the MME and/or the MCE,
  • the message is transmitted between the MME and the MME, and/or between the MCE and the MCE, and/or between the MME and the MCE; in addition to the existing message using the above interface, the message carrying the current MBMS reception status information of the UE New messages can be utilized.
  • the new messages are new messages on some interfaces involved in the forwarding mode, such as messages on the S1 interface, or messages on the X2 interface of multiple adjacent network elements, or M2. a message on the interface or the M3 interface; the target network element stores the received status information of the current MBMS of the UE, and notifies the source network element to release information related to the UE; when the target network element needs to control the UE to switch to the new The network element first queries the MBMS receiving status information stored by the UE, and then selects the target network element for the UE according to the receiving status information, and ensures that the MBMS that the UE is receiving is not interrupted; In addition, when the target network element configures the measurement interval for the UE, the measurement interval can be configured as far as possible.
  • the MBMS is on the service frame to ensure that the MBMS being received by the UE is not interrupted.
  • the source network element notifies the target network element of the information of the MBMS that the UE is currently receiving or interested to receive through the X2 interface or the forwarding mode, so that the target network element can obtain the current MBMS of the UE.
  • the receiving status information may be used to preferentially select a target network element that can maintain service continuity for the UE in the next handover.
  • the target network element may configure the measurement interval for the UE according to the current MBMS receiving status information of the UE.
  • the measurement interval is configured on a non-MBMS service frame to avoid collision between the measurement interval of the UE and the reception of the MBMS.
  • the present invention further provides a system for acquiring a receiving status information of a user equipment by using a network element
  • FIG. 4 is a schematic structural diagram of a system for acquiring a receiving status information of a user equipment by the network element of the present invention, which is the method of the first embodiment.
  • the system includes: a UE 41, a network element 42 of a target cell, where
  • the UE 41 is configured to send its current MBMS receiving status information to the network element 42 of the target cell when it starts to switch to the target cell;
  • the network element 42 of the target cell is configured to receive the current MBMS reception status information sent by the UE 41.
  • the UE 41 is a UE that has an MBMS receiving capability and/or is receiving an MBMS or is interested in receiving an MBMS and is in an RRC connected state;
  • the receiving status information of the current MBMS of the UE 41 is information of the MBMS that the UE is currently receiving or interested in receiving;
  • the information of the MBMS that the UE 41 is currently receiving or interested in receiving includes whether the current UE is receiving the MBMS, and/or the MBMS being received, and/or the MBSFN area in which the MBMS is transmitted, and/or the configuration information of the transmitted MBMS.
  • the network element 42 that sends the current MBMS reception status information to the target cell is: when the UE 41 is switched from the source cell to the target cell, or when the UE 41 first accesses the target cell.
  • the UE 41 uses the message to send its current MBMS reception status information to the network element 42 of the target cell;
  • the message is an RRC Connection Reconfiguration Complete message or an RRC Connection Reestablishment Request message or
  • the RRC connection reestablishment completion message or a new RRC message is a new RRC message.
  • FIG. 5 is a schematic structural diagram of a system for acquiring a receiving status information of a user equipment by a network element of the present invention, and is a system corresponding to the method of the second embodiment.
  • the system includes: a network element 51 of a source cell, and a target cell.
  • Network element 52 wherein
  • the network element 51 of the source cell is used to send the current MBMS reception status information of the UE to the network element 52 of the target cell when the UE starts to switch to the target cell.
  • the network element 52 of the target cell is configured to receive the current MBMS receiving status information sent by the network element 51 of the source cell.
  • the UE is a UE that has an MBMS receiving capability and/or is receiving an MBMS or is interested in receiving an MBMS and is in an RRC connected state;
  • the current MBMS reception status information of the UE is information of an MBMS that the UE is currently receiving or interested in receiving;
  • the MBMS information that the UE is currently receiving or interested in receiving includes whether the current UE is receiving the MBMS, and/or the MBMS being received, and/or the MBSFN area of the MBMS, and/or the configuration information of the transmitted MBMS.
  • the network element 51 of the source cell sends the current MBMS reception status information of the UE to the network element 52 of the target cell.
  • the network element 51 of the source cell passes the message on the X2 interface or uses the forwarding mode to forward the current MBMS of the UE.
  • the reception status information is sent to the network element 52 of the target cell.
  • the message on the X2 interface is a handover request message, an establishment request message of the X2 interface, a base station configuration update message, a mobility change request message, and an MBMS service reception status report message;
  • the forwarding mode is that the network element of the source cell sends the message of the current MBMS receiving status information of the UE to the MME through the S1 interface, and then the MME forwards the message to the target cell through the S1 interface with the target network element.
  • the NE, or the network element of the source cell sends the message of the current MBMS receiving status information of the UE to the other neighboring network element through the X2 interface, and then the neighboring network element sends the message to the target cell through the X2 interface.
  • the network element, or the network element of the source cell sends a message carrying the current MBMS receiving status information of the UE to the MCE through the M2 interface, and then the MCE forwards the message to the network element of the target cell.

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé permettant à un élément de réseau d'obtenir des informations d'état de réception d'un élément d'utilisateur. Le procédé comprend les étapes suivantes : lors du début d'un transfert intercellulaire vers une cellule cible, un élément d'utilisateur (UE, User Element) envoie ses informations d'état de réception courantes concernant un service de Diffusion-Multidiffusion Multimédia (MBMS, Multimedia Broadcast Multicast Service) à un élément de réseau de la cellule cible ; ou, lorsque l'UE commence à effectuer un transfert intercellulaire vers une cellule cible depuis une cellule source, un élément de réseau de la cellule source envoie des informations d'état de réception courantes du service MBMS de l'UE à un élément de réseau de la cellule cible. L'invention concerne également un système permettant à un élément de réseau d'obtenir des informations d'état de réception d'un élément d'utilisateur. Conformément aux solutions de la présente invention, l'élément de réseau peut obtenir en temps utile les informations d'état de réception courantes du service MBMS de l'UE se trouvant dans un état connecté et situé dans la cellule commandée par l'élément de réseau.
PCT/CN2011/077497 2011-02-24 2011-07-22 Procédé et système permettant à un élément de réseau d'obtenir des informations d'état de réception d'un élément d'utilisateur Ceased WO2012113199A1 (fr)

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CN102761829B (zh) * 2011-04-26 2017-09-12 上海无线通信研究中心 一种在X2接口上保障eMBMS服务连续性的方法
GB2522665A (en) 2014-01-31 2015-08-05 Nec Corp Communication system
CN104918277B (zh) * 2014-03-14 2018-07-03 电信科学技术研究院 一种进行频点配置和数据传输的方法、设备及系统
CN106341848B (zh) * 2015-07-07 2019-12-13 电信科学技术研究院 一种切换方法及装置
CN109429188A (zh) * 2017-08-21 2019-03-05 成都鼎桥通信技术有限公司 基于Btrunc的集群用户测量GAP规避方法及设备
CN113810956B (zh) * 2020-06-11 2023-03-31 维沃移动通信有限公司 切换多播业务的方法及设备
CN114079870B (zh) * 2020-08-13 2023-06-02 华为技术有限公司 通信方法及装置

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