WO2011015137A1 - 载波选择方法、用户设备、接入网基站设备和通信系统 - Google Patents

载波选择方法、用户设备、接入网基站设备和通信系统 Download PDF

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Publication number
WO2011015137A1
WO2011015137A1 PCT/CN2010/075687 CN2010075687W WO2011015137A1 WO 2011015137 A1 WO2011015137 A1 WO 2011015137A1 CN 2010075687 W CN2010075687 W CN 2010075687W WO 2011015137 A1 WO2011015137 A1 WO 2011015137A1
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Prior art keywords
broadcast multicast
multimedia broadcast
user equipment
multicast service
carrier
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PCT/CN2010/075687
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English (en)
French (fr)
Inventor
陈芳
刘亚林
叶枫
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华为技术有限公司
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Publication of WO2011015137A1 publication Critical patent/WO2011015137A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0007Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/30Resource management for broadcast services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point

Definitions

  • Carrier selection method, user equipment, access network base station equipment and communication system The application is filed on August 4, 2009, and the application number is 200910090421.7, and the invention name is "carrier selection method, user equipment, access network base station".
  • the priority of the Chinese patent application of the device and the communication system is hereby incorporated by reference in its entirety.
  • the present invention relates to communication technologies, and in particular, to a carrier selection method, a user equipment, an access network base station apparatus, and a communication system. Background technique
  • Third-generation mobile communications can provide higher data rate services than second-generation mobile communications, thereby supporting a variety of services, such as video telephony, picture downloads, high-speed browsing of Internet networks, and the like.
  • One type of service can simultaneously send data to user terminals that subscribe to the service in the wireless network, such as: weather forecast, news clips, sports competition highlights, and so on.
  • the third generation mobile communication proposed Multimedia Broadcast Multicast Service (hereinafter referred to as MBMS).
  • a cell in LTE supports only one carrier, and all MBMS services are distributed on the carrier.
  • User equipment in the connected state (User Equipment) The following is abbreviated: UE)
  • UE User Equipment
  • a source evolved base station Evolved Node B, e.g., eNodeB
  • eNodeB evolved Node B
  • the control signaling and data transmission of the X2 interface need to be switched.
  • the source eNodeB sends a measurement control message to the UE, where the neighboring cell list is included, and each cell in the neighboring cell list corresponds to one carrier, and the UE sends the measurement result to the source eNodeB, and the measurement result includes each phase. Information such as the signal strength of the neighboring cell.
  • the source eNodeB decides whether to perform handover based on the measurement result. If the handover is made, the source eNodeB selects a suitable cell (carrier) for the UE to switch.
  • LTE-A enhanced LTE
  • LTE-A LTE Advanced, hereinafter referred to as LTE-A
  • LTE-A enhanced LTE
  • the UE in the connected state performs handover, the UE that is performing the MBMS service is switched to a carrier that does not support the MBMS service, or Switching to the carrier that does not support the ongoing MBMS service causes the MBMS service of the UE to be interrupted, affecting the user experience.
  • An embodiment of the present invention provides a carrier selection method, a user equipment, an access network base station device, and a communication system, to implement an MBC for an UE when an inter-cell handover is performed by a UE that is using an MBMS service.
  • the continuity of the service, and the UE that will perform the MBMS service is migrated to the appropriate carrier.
  • the embodiment of the invention provides a carrier selection method, including:
  • the embodiment of the invention further provides a carrier selection method, including:
  • An embodiment of the present invention further provides an access network base station device, including:
  • a first acquiring module configured to acquire multimedia broadcast multicast service information of the user equipment
  • a second acquiring module configured to acquire multimedia broadcast multicast service distribution information of a neighboring cell carrier
  • a selecting module configured to: according to the multimedia broadcast multicast service information of the user equipment, and the multimedia broadcast multicast of the adjacent cell carrier Service distribution information, select the carrier of the target cell.
  • the embodiment of the invention further provides a user equipment, including:
  • a first sending module configured to send the multimedia broadcast multicast service information of the user equipment to the And accessing the base station, so that the access network base station selects a carrier of the target cell according to the multimedia broadcast multicast service information and the multimedia broadcast multicast service distribution information of the neighboring cell carrier.
  • the embodiment of the present invention further provides a communication system, including a user equipment and an access network base station device, where the user equipment is configured to send multimedia broadcast multicast service information of the user equipment to the access network base station equipment;
  • the access network base station device is configured to acquire the multimedia broadcast multicast service information of the user equipment, obtain the multimedia broadcast multicast service distribution information of the neighboring cell carrier, and use the multimedia broadcast multicast service information and the location of the user equipment.
  • the multimedia broadcast multicast service distribution information of the adjacent cell carrier is selected, and the carrier of the target cell is selected.
  • the UE sends the MBMS service information to the access network base station, and the access network base station selects the carrier of the appropriate target cell for the UE according to the MBMS service information and the MBMS service distribution information, thereby implementing the MBMS service being used.
  • the UE selects an appropriate carrier to ensure the continuity of the MBMS service, and also migrates the UE to perform the MBMS service to the appropriate carrier.
  • FIG. 1 is a schematic structural diagram of a network structure of an evolved global radio access network multicast broadcast service in an application scenario of a first embodiment of a carrier selection method according to the present invention
  • FIG. 2 is a schematic flowchart of a first embodiment of a carrier selection method according to the present invention
  • FIG. 3 is a schematic flow chart of a second embodiment of a carrier selection method according to the present invention.
  • FIG. 4 is a schematic structural diagram of a first embodiment of a UE according to the present invention.
  • FIG. 5 is a schematic structural diagram of a first embodiment of an access network base station device according to the present invention.
  • FIG. 6 is a schematic structural diagram of a second embodiment of an access network base station device according to the present invention.
  • FIG. 7 is a schematic structural diagram of an embodiment of an inventive communication system. detailed description The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments.
  • FIG. 1 a schematic diagram of a network structure of an Evolved Universal Terrestrial Radio Access Network (EUTRAN) multicast broadcast service in an application scenario of the first embodiment of the carrier selection method of the present invention, where The solid line indicates the user data interface, and the dotted line indicates the control interface.
  • the Broadcast Multicast-Service Center Content Provider (hereinafter referred to as BM-SC CP) is a wireless network structure that supports broadcast multicast services.
  • the -SC is connected to the broadcast multicast service gateway (MBMS Gateway, hereinafter referred to as MBMS GW) through the SGmb interface or the SGi-mb interface.
  • MBMS Gateway broadcast multicast service gateway
  • the MBMS GW is connected to the evolved base station (Evolved NodeB, hereinafter referred to as eNB) through the user data interface M1.
  • the MCE is connected to the eNB through the control interface M2, and the eNB is connected to the neighboring eNB through the control interface X2.
  • the control interface M3 is connected to the Multi-cell/Multicast Coordination Entity (MCE).
  • MCE is a logical entity and does not exclude the entity from being part of other network elements.
  • the entity allocates resources to all participating eNBs in the MBSFN transmission. Not only the allocation of time-frequency resources, but also the details of the wireless configuration, such as modulation and coding schemes.
  • the MCE only involves MBMS session control signaling, and there is no MCE-UE interaction signaling.
  • the MBMS GW is a logical entity. It does not exclude that the entity is part of other network elements.
  • the entity is between the BMSC and the eNB.
  • the primary function is to use the SYNC protocol to send/broadcast MBMS packets to the eNBs transmitting the traffic, and transmit them using the IP multicast protocol.
  • Control Interface M3 defines an application protocol to complete the start and end of the MBMS session.
  • the signaling transport protocol is SCTP.
  • the M2 interface defines an application protocol, including at least the wireless configuration data when MBSFN is transmitted, and the signaling transmission protocol used is SCTP.
  • User Interface Interface The M1 interface is a pure user data interface.
  • An IP multicast network may be set in the EUTRAN, as shown by the dotted line in the figure, to implement the MBMS service, and the IP multicast network is connected to the MBMS GW and each eNB through the user data interface M1.
  • FIG. 2 it is a schematic flowchart of a first embodiment of a carrier selection method according to the present invention, which may include, for example, Next steps:
  • Step 21 The UE sends its MBMS service information to the access network base station.
  • Step 22 The access network base station selects a carrier of the target cell or the target cell according to the MBMS service distribution information of the neighboring cell carrier and the MBMS service information.
  • one cell includes one carrier, so the access network base station needs to select a target cell, and then the mobile terminal is switched to the carrier of the selected target cell.
  • one cell includes at least two carriers, so the access network base station needs to select the carrier of the target cell, and then the mobile terminal is switched to the carrier of the selected target cell.
  • the UE may send its MBMS service information to the access network base station by:
  • Control element Control Element, hereinafter referred to as CE
  • MAC Media Access Control
  • a CE of the MAC layer is newly set, and the CE carries the status information of the MBMS service that the UE is performing or the information of the MBMS service that the UE is going to perform.
  • the downlink logical channel number of the newly set MAC CE may occupy any logical channel number in the MAC CE reserved field. As shown in Table 1, it is a specific example of the MAC CE downlink logical channel number, where 01011-11001 is the reserved logical channel number.
  • 01011 can be set as the MBMS services report channel:
  • Table 2 Downstream logical channel number of the newly set MAC CE UE
  • the MAC CE is sent to the access network base station.
  • the access network base station After receiving the MAC CE, the access network base station can monitor the MBMS service information of the UE in real time. Mode 2, measurement report
  • the UE receives a measurement control message (Measurement Control) sent by the access network base station, where the measurement control message includes a neighbor cell list, and measures signal strengths of neighboring cells in the neighbor cell list.
  • the UE accesses the access network base station.
  • the measurement report is sent, and the MBMS service information of the UE and the signal strength of the neighboring cell may be carried in the measurement report.
  • the UE not only sends a measurement report to the access network base station after receiving the measurement control message, but also periodically reports the measurement report to the access network base station according to the set period, and can notify the access network base station UE of the MBMS in real time. Industry ⁇ .
  • the access network base station receives the measurement report, so that the MBMS service information of the UE can be monitored in real time.
  • RRC Radio Resource Control
  • the UE may also carry its MBMS service information to the access network base station through RRC signaling.
  • RRC connection setup message or RRC connection reconfiguration message When the UE establishes an RRC connection with the access network base station, the UE sends an RRC connection setup message to the access network base station, where the RRC connection setup message may carry the MBMS service information of the UE; And receiving, by the access network base station, the RRC connection reconfiguration message sent by the access network base station, and sending an RRC connection reconfiguration response message to the access network base station, where the RRC connection reconfiguration response message includes the MBMS of the UE.
  • Business information When the UE establishes an RRC connection with the access network base station, the UE sends an RRC connection setup message to the access network base station, where the RRC connection setup message may carry the MBMS service information of the UE; And receiving, by the access network base station, the RRC connection reconfiguration message sent by the access network base station, and sending an RRC connection reconfiguration response message to the access network base station, where the RRC connection reconfiguration response message includes the MBMS of the UE.
  • the UE may change when the status information of its ongoing MBMS service changes (for example, when the UE starts a new MBMS service, or when the UE stops performing an MBMS service) or When the MBMS service is performed, an RRC signaling is reconstructed and sent to the access network base station, where the RRC signaling can carry the MBMS service information of the UE, and the access network base station receives the RRC signaling, so that the MBMS service of the UE can be monitored in real time. information.
  • the MBMS service information may include status information of the MBMS service that the UE is conducting or information about the MBMS service to be performed.
  • the UE may set priorities for different MBMS services, and the MBMS service information may also include the priorities.
  • the UE sends the MBMS service information to the access network base station, and the access network base station selects the carrier of the appropriate target cell for the UE according to the MBMS service information, so as to implement the inter-cell handover when the UE that is using the MBMS service performs the inter-cell handover.
  • the appropriate carrier is selected for the UE to ensure continuity of the MBMS service, and the UE to perform the MBMS service can also be migrated to the appropriate carrier.
  • a schematic flowchart of a second embodiment of a carrier selection method according to the present invention may include the following steps:
  • Step 31 The access network base station acquires MBMS service information of the UE.
  • the MBMS service information of the UE may include status information of the MBMS service that the UE is performing or information about the MBMS service to be performed.
  • Step 32 The access network base station acquires MBMS service distribution information of the neighboring cell carrier.
  • the MBMS service distribution information of the neighboring cell carrier includes carrier information of the neighboring cell and information of the MBMS service provided by the carrier of the neighboring cell;
  • Step 33 The access network base station selects a carrier of the target cell according to the MBMS service information of the UE and the MBMS service distribution information of the neighboring cell carrier.
  • the access network base station can receive the UE sent by the UE in the following three manners.
  • MBMS business information :
  • Mode 1 When the status of the MBMS service being performed by the UE changes or the MBMS service is to be performed, the access network base station receives the MAC CE sent by the UE, and the MAC CE includes the MBMS service information of the UE.
  • the access network base station sends a measurement control message to the UE, where the measurement control message includes a neighboring cell list, and the neighboring cell list includes a neighboring cell, and receives a measurement report sent by the UE, where the measurement report includes the UE measurement.
  • the signal strength of the neighboring cell and the multimedia broadcast multicast service information of the user equipment is not limited to, but not limited to, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi Protectet Radio Service
  • the access network base station receives the measurement report sent by the user equipment according to the set period. For details, refer to the method 2 in the previous embodiment, and details are not described herein again.
  • the access network base station can obtain the MBMS service distribution information of the neighboring cell carrier by:
  • the access network base station When the access network base station establishes a connection with the adjacent access network base station, it informs each other of the MBMS service distribution information of different carriers on the cell under each access network base station. Since the MBMS service distributed on different carriers will be configured in the initial stage of the deployment, the MBMS service distribution information will change unless a new MBMS service is added. Therefore, the MBMS service distribution information on different carriers is almost static.
  • Mode 2 dynamic notification If the MBMS service distribution information of the access network base station changes, for example: an MBMS service is added to a certain carrier of the access network base station, and the access network base station passes an X2 interface (between the access network base stations) The interface of the signaling plane notifies all neighboring access network base stations of the changed MBMS service distribution information of the access network base station.
  • the carrier of the neighboring cell is selected as the carrier of the target cell.
  • the ingress network base station switches the UE to the carrier R of the cell B. If the carrier R of the cell A and the cell B provide the ongoing MBMS service of the UE, the access network base station compares the signal strengths of the multiple neighboring cells, and switches the UE to the carrier R of the cell A or the cell B with stronger signal strength. .
  • the MBMS service information of the UE may further include at least two MBMS services that the UE is performing or a priority of at least two MBMS services to be performed.
  • the access network base station selects a carrier of a neighboring cell that provides a higher priority MBMS service as a carrier of the target cell.
  • each neighboring cell has one carrier, providing one MBMS service, and the UE is performing or will perform two MBMS services, and the access network base station selects a carrier of a neighboring cell that provides a higher priority MBMS service as Carrier of the target cell.
  • the access network base station may further select, as the carrier of the target cell, a carrier with a smaller load among the carriers of the neighboring cells of the MBMS service that the UE is performing or is about to perform.
  • the access network base station receives the MBMS service information sent by the UE, and selects a suitable target cell carrier for the UE according to the MBMS service information and the MBMS service distribution information, so as to implement the inter-cell handover when the UE that is using the MBMS service performs inter-cell handover.
  • the appropriate carrier is selected for the UE to ensure continuity of the MBMS service, and the UE to perform the MBMS service can also be migrated to the appropriate carrier.
  • one neighboring cell may correspond to at least two carriers, and may be applied to an LTE-A network, or one neighboring cell may correspond to one carrier, and is applicable to an LTE/SAE network.
  • FIG. 4 it is a schematic structural diagram of a first embodiment of a UE according to the present invention, which may include a first sending module.
  • the first sending module 41 is configured to send the MBMS service information of the UE to the access network base station, so that the access network base station selects the carrier of the target cell according to the MBMS service information.
  • the first sending module 41 sends the MBMS service information of the UE to the access network base station, so that the access network base station selects the carrier of the target cell according to the MBMS service information, so that the UE that is using the MBMS service performs the cell.
  • the appropriate carrier is selected for the UE to ensure the continuity of the MBMS service, and the UE to perform the MBMS service can also be migrated to the appropriate carrier.
  • the first sending module 41 may include a first sending submodule 411, configured to send a MAC CE to the access network base station when the status of the ongoing MBMS service of the UE changes or the MBMS service is to be performed.
  • the MAC CE includes the MBMS service information of the UE.
  • a CE of the MAC layer is newly set, and the CE carries the status information of the ongoing MBMS service of the UE or the information of the MBMS service to be performed by the UE.
  • the downlink logical channel number of the newly set MAC CE may occupy any logical channel number in the MAC CE reserved field.
  • the first sending module 41 of the embodiment may further include a second sending submodule 412, configured to receive a measurement control message sent by the access network base station, and send a measurement report to the access network base station, where the measurement report includes the MBMS service information of the UE. .
  • the neighboring cell list may be included in the measurement control message.
  • the second sending sub-module 412 can not only report the measurement report after receiving the measurement control message, but also report the measurement report according to the set period, so that the MBMS service information of the access network base station can be notified in real time, so as to facilitate access.
  • the network base station can monitor the MBMS service information of the UE in real time.
  • the first sending module 41 may further include a third sending submodule 413, configured to send an RRC connection setup message to the access network base station when the UE establishes an RRC connection with the access network base station, where the RRC connection is established.
  • the message includes the MBMS industry of the UE.
  • the first sending module 41 may further include a fourth sending submodule 414, configured to receive an RRC connection reconfiguration message sent by the access network base station when the access network base station detects that the UE is handed over, The network access base station sends an RRC connection reconfiguration response message, where the RRC connection reconfiguration response message includes the MBMS service information of the UE.
  • the first sending module 41 may further include a fifth sending submodule 415, configured to construct RRC signaling when the state of the MBMS service that is being performed by the UE changes or the MBMS service is to be performed.
  • the MBMS service information of the UE is included, and the RRC signaling is sent to the access network base station.
  • the MBMS service information of the UE may include information about the MBMS service that the UE is performing or information about the MBMS service that is to be performed.
  • the MBMS service distribution information of the neighboring cell carrier may include carrier information of the neighboring cell and information of the MBMS service corresponding to the carrier of the neighboring cell.
  • the implementation may further include a priority setting module 42, configured to set a priority for the at least two MBMS services when the UE performs at least two MBMS services or performs at least two MBMS services; The priority is also included in the MBMS service information of the UE sent by the sending module 41.
  • a priority setting module 42 configured to set a priority for the at least two MBMS services when the UE performs at least two MBMS services or performs at least two MBMS services.
  • the priority is also included in the MBMS service information of the UE sent by the sending module 41.
  • the first sending module 41 sends the MBMS service information to the access network base station, so that the access network base station selects the carrier of the target cell according to the MBMS service information and the MBMS service distribution information of the neighboring cell carrier, thereby implementing
  • the appropriate carrier is selected for the UE to ensure the continuity of the MBMS service, and the UE to perform the MBMS service may also be migrated to the appropriate carrier.
  • one neighboring cell may correspond to at least two carriers, and may be used for an LTE-A network, or one neighboring cell may also correspond to one carrier, and is applicable to an LTE/SAE network.
  • FIG. 5 it is a schematic structural diagram of a first embodiment of an access network base station device according to the present invention, which may include a first obtaining module 81, a second obtaining module 82, and a selecting module 83.
  • the first obtaining module 81 is configured to acquire MBMS service information of the UE.
  • the second obtaining module 82 is configured to obtain MBMS service distribution information of the neighboring cell carrier.
  • the selecting module 83 is configured to select a carrier of the target cell according to the MBMS service information of the UE and the MBMS service distribution information of the neighboring cell carrier.
  • the first acquiring module 81 receives the MBMS service information of the UE that is sent by the UE
  • the second acquiring module 82 acquires the MBMS service distribution information of the neighboring cell carrier
  • the selection module 83 obtains the MBMS of the UE according to the first acquiring module 81.
  • the service information and the MBMS service distribution information of the neighboring cell carrier acquired by the second obtaining module 82 are used to select a carrier of the target cell, so that when the UE that is using the MBMS service performs inter-cell handover, an appropriate carrier is selected for the UE to ensure The continuity of the MBMS service, and the UE to be MBMS service can also be migrated to a suitable carrier.
  • FIG. 6 is a schematic structural diagram of a second embodiment of an access network base station device according to the present invention.
  • the first obtaining module 81 may include a first obtaining submodule 811.
  • the first obtaining sub-module 811 is configured to receive the MAC CE sent by the UE when the status of the MBMS service being used by the UE changes or the MBMS service is to be performed, where the MAC CE includes the MBMS service information of the UE.
  • the downlink logical channel number of the MAC CE may occupy any one of the logical channel numbers in the MAC CE reserved field.
  • the first obtaining module 81 may further include a second obtaining sub-module 812, configured to send a measurement control message to the UE, and receive a measurement report sent by the UE, where the measurement report includes the MBMS service information of the UE and the neighboring cell. The signal strength of neighboring cells in the list.
  • the second obtaining submodule 812 can also receive the measurement report sent by the UE according to the set period.
  • the first obtaining module 81 may further include a third obtaining sub-module 813, configured to: when the UE establishes an RRC connection with the access network base station, receive an RRC connection setup message sent by the UE, where the RRC connection setup message is The MBMS service information of the UE is included.
  • a third obtaining sub-module 813 configured to: when the UE establishes an RRC connection with the access network base station, receive an RRC connection setup message sent by the UE, where the RRC connection setup message is The MBMS service information of the UE is included.
  • the first obtaining module 81 may further include a fourth obtaining submodule 814, configured to be connected.
  • the network access base station When receiving the handover of the UE, the network access base station sends an RRC connection reconfiguration message to the UE, and receives an RRC connection reconfiguration response message sent by the UE, where the RRC connection reconfiguration response message includes the MBMS service information of the UE.
  • the first obtaining module 81 may further include a fifth obtaining submodule 815, configured to receive RRC signaling sent by the UE when the status of the MBMS service that is being performed by the UE changes or the MBMS service is to be performed, the RRC The signaling includes MBMS service information of the UE.
  • the second obtaining module 82 may include a first interface unit 821, configured to receive neighbors sent by neighboring access network base stations when the access network base station establishes a connection with a neighboring access network base station.
  • MBMS service distribution information of the cell carrier may include a first interface unit 821, configured to receive neighbors sent by neighboring access network base stations when the access network base station establishes a connection with a neighboring access network base station.
  • the second obtaining module 82 may further include a second interface unit 822, configured to receive the X2 interface signaling sent by the neighboring access network base station when the MBMS service distribution information of the neighboring cell carrier changes.
  • the message includes the changed MBMS service distribution information of the neighboring cell in the X2 interface signaling plane message.
  • the MBMS service information of the UE may include information about the MBMS service that the UE is performing or information about the MBMS service that is to be performed.
  • the MBMS service distribution information of the neighboring cell carrier includes carrier information of the neighboring cell and information of the MBMS service provided by the carrier of the neighboring cell.
  • the selection module 83 is further configured to select the carrier of the neighboring cell as the carrier of the target cell when the MBMS service provided by the neighboring cell includes the MBMS service or the MBMS service to be performed by the UE.
  • the MBMS service information of the UE may further include the priority of the at least two MBMS services, and at this time, the selecting module 83 further A carrier for selecting a neighboring cell that provides a higher priority MBMS service is used as a carrier of the target cell.
  • the selection Module 83 selects carrier R of cell B as the carrier of the target cell. If the community Both the carrier R of the A and the cell B provide the ongoing MBMS service of the UE, and the selection module 83 selects the carrier R of the cell A with the stronger signal strength or the carrier R of the cell B as the carrier of the target cell.
  • the selection module 83 may also select, as the carrier of the target cell, a carrier with a smaller load in the carrier of the neighboring cell of the MBMS service or the MBMS service to be performed by the UE.
  • the first obtaining module 81 acquires the MBMS service information of the UE
  • the second obtaining module 82 acquires the MBMS service distribution information of the neighboring cell carrier
  • the selection module 83 obtains the MBMS service information and the first received by the first acquiring module 81.
  • the selecting module 83 may further select a carrier that provides the MBMS service of the UE or the carrier of the neighboring cell of the MBMS service to be performed.
  • a small carrier is used as the carrier of the target cell, so that when the UE that is using the MBMS service performs the inter-cell handover, the appropriate carrier is selected for the UE to ensure the continuity of the MBMS service, and the UE to perform the MBMS service may also be migrated to On the appropriate carrier, thereby implementing the UE that is using the MBMS service.
  • the UE selecting the appropriate carrier to ensure the continuity of MBMS business, but also can be a UE to the MBMS service move to a suitable carrier.
  • one neighboring cell may correspond to at least two carriers, and may be applicable to an LTE-A network, or may be a neighboring cell or a carrier, and is applicable to LTE/ SAE network.
  • a schematic structural diagram of an embodiment of a communication system of the present invention may include a UE 101 and an access network base station device 102.
  • the UE 101 sends the MBMS service information of the UE 101 to the access network base station device 102, and the access network base station device 102 receives the MBMS service information of the UE 101 sent by the UE 101, and obtains the MBMS service distribution information of the neighboring cell carrier, according to MBMS service distribution information of neighboring cell carriers and UE 101
  • the MBMS service information selects the carrier of the target cell, so that when the UE that is using the MBMS service performs the inter-cell handover, the appropriate carrier is selected for the UE to ensure the continuity of the MBMS service, and the UE to perform the MBMS service may also be migrated to On the appropriate carrier, when the UE that is using the MBMS service performs the inter-cell handover, the appropriate carrier is selected for the UE to ensure the continuity of the MBMS service, and the UE to perform the MBMS service can also be migrated to the appropriate carrier. .
  • the UE 101 may include any of the foregoing UE embodiments.
  • the access network base station device 102 may include any of the foregoing access network base station device embodiments, and details are not described herein.

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Description

载波选择方法、 用户设备、 接入网基站设备和通信系统 本申请要求于 2009年 8月 4日提交中国专利局、 申请号为 200910090421.7, 发明名称为"载波选择方法、用户设备、接入网基站设备和通信系统 "的中国专利 申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信技术, 尤其涉及一种载波选择方法、 用户设备、 接入网基 站设备和通信系统。 背景技术
第三代移动通信可以提供比第二代移动通信更高数据速率的服务, 从而支 持多种业务, 例如: 视频电话、 图片下载、 高速浏览 Internet网络等。 其中一类 业务可以同时给无线网络中订阅了该业务的用户终端发送数据, 例如: 天气预 报、 新闻短片、 体育比赛集锦等等。 利用该业务同时发送的特点, 第三代移动 通信提出了多媒体广播组播业务 ( Multimedia Broadcast Multicast Service, 以下 筒称: MBMS )。
在采用 MBMS业务的长期演进网络( Long Term Evolution, 以下简称: LTE ) 中, LTE的一个小区只支持一个载波, 所有的 MBMS业务都分布在该载波上, 当 处于连接状态的用户设备 ( User Equipment, 以下简称: UE )从一个源演进基站 ( Evolved Node B, 以下筒称: eNodeB ) 的控制区域进入目标 eNodeB的控制区 域时,需要进行 X2接口的控制信令和数据发送的切换。在切换过程中,源 eNodeB 会向 UE发送测量控制消息, 其中包括相邻小区列表, 相邻小区列表中的每个小 区对应一个载波, UE将测量结果上 给源 eNodeB, 该测量结果包括各个相邻小 区的信号强度等信息。 源 eNodeB根据该测量结果决定是否进行切换。 如果进行 切换 , 源 eNodeB为 UE选择合适的小区 (载波)进行切换。
但是在增强的 LTE ( LTE Advanced , 以下简称: LTE-A ) 中, 一个小区可以 同时支持多个载波, 存在不同的 MBMS业务分布在不同的载波上的情况, 当处 于连接状态的 UE进行切换时,会把正在进行 MBMS业务的 UE切换到一个不支持 MBMS业务的载波上, 或者切换到不支持该正在进行的 MBMS业务的载波上, 从而导致 UE的 MBMS业务被中断, 影响用户的体验。 发明内容
本发明实施例提供一种载波选择方法、 用户设备、 接入网基站设备和通信 系统 , 用以实现在正在使用 MBMS业务的 UE进行小区间切换时 , 为该 UE选择适 当的载波, 以保证 MBMS业务的连续性, 同时将要进行 MBMS业务的 UE迁移到 合适的载波上。
本发明实施例提供了一种载波选择方法, 包括:
获取用户设备的多媒体广播组播业务信息;
获取相邻小区载波的多媒体广播组播业务分布信息;
根据所述用户设备的多媒体广播组播业务信息和所述相邻小区载波的多媒 体广播组播业务分布信息, 选择目标小区的载波。
本发明实施例还提供了一种载波选择方法, 包括:
将用户设备的多媒体广播组播业务信息发送给接入网基站, 以便于所述接 入网基站根据所述多媒体广播组播业务信息和相邻小区载波的多媒体广播组播 业务分布信息选择目标小区的载波。
本发明实施例还提供了一种接入网基站设备, 包括:
第一获取模块 , 用于获取用户设备的多媒体广播组播业务信息;
第二获取模块, 用于获取相邻小区载波的多媒体广播组播业务分布信息; 选择模块, 用于根据所述用户设备的多媒体广播组播业务信息和所述相邻 小区载波的多媒体广播组播业务分布信息, 选择目标小区的载波。
本发明实施例还提供了一种用户设备, 包括:
第一发送模块, 用于将所述用户设备的多媒体广播组播业务信息发送给接 入网基站, 以便于所述接入网基站根据所述多媒体广播组播业务信息和相邻小 区载波的多媒体广播组播业务分布信息选择目标小区的载波。
本发明实施例还提供了一种通信系统, 包括用户设备和接入网基站设备; 所述用户设备用于将所述用户设备的多媒体广播组播业务信息发送给所述 接入网基站设备;
所述接入网基站设备用于获取所述用户设备的多媒体广播组播业务信息, 获取相邻小区载波的多媒体广播组播业务分布信息, 根据所述用户设备的多媒 体广播组播业务信息和所述相邻小区载波的多媒体广播组播业务分布信息, 选 择目标小区的载波。
在本发明实施例中, UE将 MBMS业务信息发送给接入网基站, 接入网基站 根据该 MBMS业务信息以及 MBMS业务分布信息为 UE选择合适的目标小区的载 波, 从而实现正在使用 MBMS业务的 UE进行小区间切换时 , 为该 UE选择适当的 载波, 以保证 MBMS业务的连续性, 同时也可以将要进行 MBMS业务的 UE迁移 到合适的载波上。 附图说明
图 1 为本发明载波选择方法第一实施例的应用场景中演进的全球无线接入 网络组播广播业务组网结构示意图;
图 2为本发明载波选择方法第一实施例的流程示意图;
图 3为本发明载波选择方法第二实施例的流程示意图;
图 4为本发明 UE第一实施例的结构示意图;
图 5为本发明接入网基站设备第一实施例的结构示意图;
图 6为本发明接入网基站设备第二实施例的结构示意图;
图 7为发明通信系统实施例的结构示意图。 具体实施方式 下面通过附图和实施例, 对本发明的技术方案做进一步的详细描述。
如图 1 所示, 为本发明载波选择方法第一实施例的应用场景中演进的全球 无线接入网络 ( Evolved Universal Terrestrial Radio Access Network , 简称: EUTRAN )组播广播业务组网结构示意图, 其中, 实线表示用户数据接口, 虚 线表示控制接口, 广播 /组播业务服务器内容提供商( Broadcast Multicast-Service Center Content Provider, 以下简称: BM-SC CP )为支持广播组播业务的无线网 络结构, BM-SC通过 SGmb接口或 SGi-mb接口与广播组播业务网关( MBMS Gateway, 以下筒称: MBMS GW )相连, MBMS GW通过用户数据接口 Ml和 演进的基站(Evolved NodeB, 以下简称: eNB )相连, 通过控制接口 M3与多 小区多播协调实体( Multi-cell/multicast Coordination Entity , 以下简称: MCE ) 相连, MCE通过控制接口 M2与 eNB相连, eNB通过控制接口 X2与相邻的 eNB 连接。 其中, MCE是一个逻辑实体, 不排除该实体是其他网元的一部分, 该实 体在 MBSFN传输中给所有参与的 eNB分配资源。 不仅分配时频资源, 还包括 确定无线配置的细节,比如调制和编码方案。 MCE仅涉及 MBMS会话控制信令, 不存在 MCE-UE交互信令。 MBMS GW是一个逻辑实体, 不排除该实体是其他 网元的一部分, 该实体在 BMSC和 eNB之间, 首要功能是使用 SYNC协议给传 输业务的 eNB发送 /广播 MBMS包, 使用 IP组播协议传输 MBMS用户面数据。 控制接口 M3会定义一个应用协议, 完成 MBMS会话开始和结束的功能, 信令 传输协议为 SCTP。 M2接口会定义一个应用协议, 至少包括 MBSFN传输时的 无线配置数据, 其所采用的信令传输协议为 SCTP。 用户面接口 Ml接口为纯用 户数据接口。
可以在该 EUTRAN中设置一 IP多播网, 如图中虚线框所示部分, 以实现 MBMS业务, IP多播网分别通过用户数据接口 Ml与 MBMS GW和各个 eNB 连接。
载波选择方法第一实施例
如图 2所示, 为本发明载波选择方法第一实施例的流程示意图, 可以包括如 下步驟:
步骤 21、 UE将其 MBMS业务信息发送给接入网基站;
步驟 22、 接入网基站根据相邻小区载波的 MBMS业务分布信息和 MBMS业 务信息选择目标小区或目标小区的载波。
对于 LTE网络,一个小区包括一个载波,所以接入网基站需要选择目标小区, 然后将移动个终端接换到该选择的目标小区的载波上即可。对于 LTE-A网络, 一 个小区包括至少两个载波, 所以接入网基站需要选择目标小区的载波, 然后将 移动终端接换到选择的目标小区的载波上。
在本实施例步驟 21中 , UE可以通过如下方式将其 MBMS业务信息发送给接 入网基站:
方式 1、 媒体访问控制(Media Access Control, 以下简称: MAC )层的控制 元素 ( Control Element, 以下简称: CE )。
新设置一个 MAC层的 CE , 在该 CE中携带 UE正在进行的 MBMS业务的状态 信息或 UE将要进行的 MBMS业务的信息。 该新设置的 MAC CE的下行逻辑信道 号可以占用 MAC CE保留字段中任意一个逻辑信道号。 如表 1所示, 为 MAC CE 下行逻辑信道号的一具体实例, 其中 01011-11001为保留的逻辑信道编号。
MAC CE的下行逻辑信道号
Figure imgf000007_0001
如表 2所示, 为新设置的 MAC CE的下行逻辑信道号, 可以设置 01011为 MBMS services report 辑信道:
表 2 新设置的 MAC CE的下行逻辑信道号 UE
Figure imgf000008_0001
开始进行一 个新的 MBMS业务的时候,或 UE停止进行一个 MBMS业务的时候 )或将要进 行 MBMS业务的时候发送 MAC CE到接入网基站。
接入网基站接收该 MAC CE后, 能够实时地监控 UE的 MBMS业务信息。 方式 2、 测量报告
UE接收接入网基站发送的测量控制消息( Measurement control ), 该测量控 制消息中包括相邻小区列表, 测量相邻小区列表中的相邻小区的信号强度, 完 成测量后 , 向接入网基站发送测量报告 ( Measurement report ), 在该测量报告中 可以携带 UE的 MBMS业务信息和相邻小区的信号强度。另夕卜, UE不仅在收到 测量控制消息后向接入网基站发送测量报告, 还会按照设定周期周期性地向接 入网基站测量报告, 可以实时地通知接入网基站 UE的 MBMS业^言息。 接入 网基站接收该测量报告, 从而能够实时地监控 UE的 MBMS业务信息。
方式 3、 RRC ( Radio Resource Control , 以下简称: RRC )信令
UE也可以通过 RRC信令携带其 MBMS业务信息发送到接入网基站。
( a ) RRC连接建立消息或 RRC连接重配置消息: UE与接入网基站建立 RRC 连接时, 发送 RRC连接建立消息到接入网基站, 该 RRC连接建立消息中可以携 带 UE的 MBMS业务信息; 当接入网基站监测到 UE发生切换时, 接收接入网基站 发送的 RRC连接重配置消息, 向接入网基站发送 RRC连接重配置响应消息, 该 RRC连接重配置响应消息中包括 UE的 MBMS业务信息。 ( b )新构建一条 RRC信令: UE可以在其正在进行的 MBMS业务的状态信 息发生改变时(例如: UE开始进行一个新的 MBMS业务的时候, 或 UE停止进 行一个 MBMS业务时)或将要进行 MBMS业务时, 重新构建一条 RRC信令并 发送到接入网基站, RRC信令中可以携带 UE的 MBMS业务信息, 接入网基站 接收该 RRC信令, 从而能够实时地监控 UE的 MBMS业务信息。
在本实施中 , MBMS业务信息可以包括 UE正在进行的 MBMS业务的状态 信息或将要进行的 MBMS业务的信息。
在本实施例中 ,如果 UE正在进行至少两个 MBMS业务或将要进行至少两个 MBMS业务时, UE可以为不同的 MBMS业务设定优先级,该 MBMS业务信息 中还可以包括该优先级。
在本实施例中, UE将 MBMS业务信息发送给接入网基站, 接入网基站根据 该 MBMS业务信息为 UE选择合适的目标小区的载波, 从而实现正在使用 MBMS 业务的 UE进行小区间切换时, 为该 UE选择适当的载波, 以保证 MBMS业务的连 续性, 同时也可以将要进行 MBMS业务的 UE迁移到合适的载波上。
载波选择方法第二实施例
如图 3所示, 为本发明载波选择方法第二实施例的流程示意图, 可以包括如 下步骤:
步驟 31、 接入网基站获取 UE的 MBMS业务信息;
在本实施例中 , UE的 MBMS业务信息可以包括 UE正在进行的 MBMS业务的 状态信息或将要进行的 MBMS业务的信息。
步驟 32、 接入网基站获取相邻小区载波的 MBMS业务分布信息;
具体地, 该相邻小区载波的 MBMS业务分布信息包括相邻小区的载波信息 以及相邻小区的载波提供的 MBMS业务的信息;
步骤 33、 接入网基站根据 UE的 MBMS业务信息和相邻小区载波的 MBMS业 务分布信息, 选择目标小区的载波。
在本实例步骤 32中 ,接入网基站可以通过如下三种方式接收 UE发送的 UE的 MBMS业务信息:
方式 1:当 UE正在进行的 MBMS业务的状态发生变化或将要进行 MBMS业务 时, 接入网基站接收 UE发送的 MAC CE, 该 MAC CE中包括 UE的 MBMS业务信 息。
具体参见上一实施例方式 1 , 在此不再赘述。
方式 2:接入网基站向 UE发送测量控制消息,该测量控制消息中包括相邻小 区列表, 相邻小区列表中包括相邻小区, 接收 UE发送的测量报告, 该测量报告 中包括 UE测量的相邻小区的信号强度和用户设备的多媒体广播组播业务信息。
另外, 接入网基站接收用户设备按照设定周期发送的测量报告。 具体参见 上一实施例方式 2, 在此不再赘述。
方式 3:
( a ) 当 UE与接入网基站建立 RRC连接时, 接收 UE发送的 RRC连接建立消 息, 该 RRC连接建立消息中包括 UE的 MBMS业务信息, 当接入网基站监测到 UE 发生切换时, 向 UE发送 RRC连接重配置消息, 接收 UE发送的 RRC连接重配置响 应消息 , 该 RRC连接重配置响应消息中包括 UE的 MBMS业务信息;
( b ) 当 UE正在进行的 MBMS业务的状态发生变化或将要进行 MBMS业务 时, 接收 UE发送的 RRC信令, 该 RRC信令中包括 UE的 MBMS业务信息。
具体参见上一实施例中方式 3, 在此不再赘述。
在本实施例步驟 32中, 接入网基站可以通过如下方式获取相邻小区载波的 MBMS业务分布信息:
方式 1、 静态配置
当接入网基站与相邻的接入网基站建立连接时 , 相互告知每个接入网基站下 的小区上不同载波的 MBMS业务分布信息。 由于在布网初期会配置分布在不同 载波上的 MBMS业务, 除非增加了新的 MBMS业务, MBMS业务分布信息才 会有所改变, 所以不同载波上的 MBMS业务分布信息几乎是静态的。
方式 2、 动态通知 如果接入网基站的 MBMS业务分布信息发生改变, 例如: 在接入网基站的 某个载波上新增了一个 MBMS业务等, 该接入网基站通过一条 X2接口 (接入网 基站之间的接口)信令面的消息将该接入网基站的变化后的 MBMS业务分布信 息通知所有相邻的接入网基站。
在本实施例步驟 33中, 当相邻小区的载波提供的 MBMS业务包括 UE正在进 行的 MBMS业务或将要进行的 MBMS业务时, 选择该相邻小区的载波作为目标 小区的载波。
具体地, 当多个相邻小区的信号强度满足切换条件的情况下, 例如: 小区 A 和小区 B的信号强度都满足切换条件, 如果只有小区 B的载波 R提供 UE正在进行 的 MBMS业务, 接入网基站把 UE切换到小区 B的载波 R上。 如果小区 A和小区 B 的载波 R都提供 UE正在进行的 MBMS业务, 接入网基站比较多个相邻小区的信 号强度, 将 UE切换到信号强度较强的小区 A或小区 B的载波 R上。
当 UE正在进行至少两个 MBMS业务或将要进行至少两个 MBMS业务时 , UE 的 MBMS业务信息中还可以包括 UE正在进行的至少两个 MBMS业务或将要进行 至少两个 MBMS业务的优先级,此时,接入网基站选择提供优先级较高的 MBMS 业务的相邻小区的载波作为目标小区的载波。 具体地例如: 各相邻小区有一个 载波, 提供 1个 MBMS业务, 而 UE正在进行或将要进行 2个 MBMS业务, 接入网 基站选择提供优先级较高的 MBMS业务的相邻小区的载波作为目标小区的载 波。
在本实例中 , 接入网基站还可以选择提供 UE正在进行或将要进行的 MBMS 业务的相邻小区的载波中负载较小的载波作为目标小区的载波。
在本实施例中, 接入网基站接收 UE发送的 MBMS业务信息, 根据该 MBMS 业务信息以及 MBMS业务分布信息为 UE选择合适的目标小区载波, 从而实现正 在使用 MBMS业务的 UE进行小区间切换时, 为该 UE选择适当的载波, 以保证 MBMS业务的连续性, 同时也可以将要进行 MBMS业务的 UE迁移到合适的载波 上。 上述各个实施中, 一个相邻小区可以对应至少两个载波, 此时适用于 LTE-A 网络, 也可以一个相邻小区对应一个载波, 此时适用于 LTE/SAE网络。
UE第一实施例
如图 4所示, 为本发明 UE第一实施例的结构示意图,可以包括第一发送模块
41。
其中, 第一发送模块 41用于将 UE的 MBMS业务信息发送给接入网基站, 以 便于于接入网基站根据该 MBMS业务信息选择目标小区的载波。
在本实施例中,第一发送模块 41将 UE的 MBMS业务信息发送给接入网基站, 以便于接入网基站根据 MBMS业务信息选择目标小区的载波, 从而实现正在使 用 MBMS业务的 UE进行小区间切换时 , 为该 UE选择适当的载波, 以保证 MBMS 业务的连续性, 同时也可以将要进行 MBMS业务的 UE迁移到合适的载波上。
在本实施例中, 第一发送模块 41可以包括第一发送子模块 411 , 用于当 UE 正在进行的 MBMS业务的状态发生变化或将要进行 MBMS业务时 , 向接入网基 站发送 MAC CE, 该 MAC CE中包括 UE的 MBMS业务信息。
具体地, 新设置一个 MAC层的 CE, 在该 CE中携带 UE正在进行的 MBMS业 务的状态信息或 UE将要进行的 MBMS业务的信息。 该新设置的 MAC CE的下行 逻辑信道号可以占用 MAC CE保留字段中任意一个逻辑信道号。
本实施例第一发送模块 41还可以包括第二发送子模块 412, 用于接收接入网 基站发送的测量控制消息, 向接入网基站发送测量报告, 该测量报告中包括 UE 的 MBMS业务信息。 具体地, 该测量控制消息中可以包括相邻小区列表。
另外, 第二发送子模块 412不仅可以在收到测量控制消息后上报该测量报 告, 还可以按照设定周期上报测量报告, 从而可以实时地通知接入网基站的 MBMS业务信息 , 以便于接入网基站能够实时地监控 UE的 MBMS业务信息。
在本实施例中, 第一发送模块 41还可以包括第三发送子模块 413,用于当 UE 与接入网基站建立 RRC连接时, 向接入网基站发送 RRC连接建立消息, 该 RRC 连接建立消息中包括 UE的 MBMS业^言息。 在本实施例中, 第一发送模块 41还可以包括第四发送子模块 414, 用于当接 入网基站监测到 UE发生切换时, 接收接入网基站发送的 RRC连接重配置消息, 向接入网基站发送 RRC连接重配置响应消息 , 该 RRC连接重配置响应消息中包 括 UE的 MBMS业务信息。
在本实施例中, 第一发送模块 41还可以包括第五发送子模块 415,用于当 UE 正在进行的 MBMS业务的状态发生变化或将要进行 MBMS业务时, 构建 RRC信 令, 该 RRC信令中包括 UE的 MBMS业务信息, 向接入网基站发送该 RRC信令。
在本实施例中 , UE的 MBMS业务信息中可以包括 UE正在进行的 MBMS业务 的信息或将要进行的 MBMS业务的信息。 相邻小区载波的 MBMS业务分布信息 可以包括相邻小区的载波信息以及与相邻小区的载波对应的 MBMS业务的信 息。
本实施还可以包括优先级设定模块 42, 用于当 UE正在进行至少两个 MBMS 业务或夺要进行至少两个 MBMS业务时 , 为该至少两个 MBMS业务设定优先级; 此时, 第一发送模块 41发送的 UE的 MBMS业务信息中还包括该优先级。
在本实施例中, 第一发送模块 41向接入网基站发送 MBMS业务信息, 以便 于接入网基站根据 MBMS业务信息和相邻小区载波的 MBMS业务分布信息选择 目标小区的载波, 从而实现正在使用 MBMS业务的 UE进行小区间切换时, 为该 UE选择适当的载波, 以保证 MBMS业务的连续性, 同时也可以将要进行 MBMS 业务的 UE迁移到合适的载波上。
上述 UE提供的各个实施中, 一个相邻小区可以对应至少两个载波, 此时适 用于 LTE-A网络, 也可以一个相邻小区也可以对应一个载波, 此时适用于 LTE/SAE网络。
接入网基站设备第一实施例
如图 5所示, 为本发明接入网基站设备第一实施例的结构示意图, 可以包括 第一获取模块 81、 第二获取模块 82和选择模块 83。
其中, 第一获取模块 81用于获取 UE的 MBMS业务信息。 第二获取模块 82用于获取相邻小区载波的 MBMS业务分布信息。 选择模块 83用于根据 UE的 MBMS业务信息和相邻小区载波的 MBMS业务分 布信息, 选择目标小区的载波。
在本实施中, 第一获取模块 81接收 UE发送的 UE的 MBMS业务信息, 第二获 取模块 82获取相邻小区载波的 MBMS业务分布信息, 选择模块 83根据第一获取 模块 81获取的 UE的 MBMS业务信息和第二获取模块 82获取的相邻小区载波的 MBMS业务分布信息, 选择目标小区的载波, 从而实现正在使用 MBMS业务的 UE进行小区间切换时, 为该 UE选择适当的载波, 以保证 MBMS业务的连续性, 同时也可以将要进行 MBMS业务的 UE迁移到合适的载波上。
接入网基站设备第二实施例
如图 6所示, 为本发明接入网基站设备第二实施例的结构示意图, 在图 5所 示结构示意图的基础上, 第一获取模块 81可以包括第一获取子模块 811。
第一获取子模块 811用于当 UE正在使用的 MBMS业务的状态发生变化或将 要进行 MBMS业务时, 接收 UE发送的 MAC CE, 该 MAC CE中包括 UE的 MBMS 业务信息。
具体地, 该 MAC CE的下行逻辑信道号可以占用 MAC CE保留字段中任意一 个逻辑信道号。
在本实施例中, 第一获取模块 81还可以包括第二获取子模块 812,用于向 UE 发送测量控制消息, 接收 UE发送的测量报告, 测量报告中包括 UE的 MBMS业务 信息和相邻小区列表中的相邻小区的信号强度。
在本实施例中,第二获取子模块 812还可以接收 UE按照设定周期发送的测量 报告。
在本实施例中, 第一获取模块 81还可以包括第三获取子模块 813,用于当 UE 与接入网基站建立 RRC连接时, 接收 UE发送的 RRC连接建立消息, 该 RRC连接 建立消息中包括 UE的 MBMS业务信息。
在本实施例中, 第一获取模块 81还可以包括第四获取子模块 814, 用于当接 入网基站监测到 UE发生切换时, 向 UE发送 RRC连接重配置消息, 接收 UE发送 的 RRC连接重配置响应消息, 该 RRC连接重配置响应消息中包括 UE的 MBMS业 务信息。
在本实例中, 第一获取模块 81还可以包括第五获取子模块 815, 用于当 UE 正在进行的 MBMS业务的状态发生变化或将要进行 MBMS业务时, 接收 UE发送 的 RRC信令, 该 RRC信令中包括 UE的 MBMS业务信息。
在本实施例中, 第二获取模块 82可以包括第一接口单元 821 , 用于当接入网 基站与相邻的接入网基站建立连接时, 接收相邻的接入网基站发送的相邻小区 载波的 MBMS业务分布信息。
在本实施例中, 第二获取模块 82还可以包括第二接口单元 822, 用于当相邻 小区载波的 MBMS业务分布信息发生变化时, 接收相邻的接入网基站发送的 X2 接口信令面消息 , 该 X2接口信令面消息中包括相邻小区的变化后的 MBMS业务 分布信息。
在本实施例中 , UE的 MBMS业务信息中可以包括 UE正在进行的 MBMS业务 的信息或将要进行的 MBMS业务的信息。 相邻小区载波的 MBMS业务分布信息 包括相邻小区的载波信息以及相邻小区的载波提供的 MBMS业务的信息。
在上一实例的基础上, 选择模块 83还用于当相邻小区提供的 MBMS业务包 括 UE正在进行的 MBMS业务或将要进行的 MBMS业务时 , 选择该相邻小区的载 波作为目标小区的载波。
在本实施中, 当 UE正在进行至少两个 MBMS业务或将要进行至少两个 MBMS业务时, UE的 MBMS业务信息中还可以包括该至少两个 MBMS业务的优 先级, 此时, 选择模块 83还用于选择提供优先级较高的 MBMS业务的相邻小区 的载波作为目标小区的载波。
具体地, 当多个相邻小区的信号强度满足切换条件的情况下, 例如: 小区 A 和小区 B的信号强度都满足切换条件, 如果只有小区 B的载波 R提供 UE正在进行 的 MBMS业务, 选择模块 83选择小区 B的载波 R作为目标小区的载波。 如果小区 A和小区 B的载波 R都提供 UE正在进行的 MBMS业务, 选择模块 83选择信号强度 较强的小区 A的载波 R或小区 B的载波 R作为目标小区的载波。
在本实施例中 , 选择模块 83还可以选择提供 UE正在进行的 MBMS业务或将 要进行的 MBMS业务的相邻小区的载波中负载较小的载波作为目标小区的载 波。
在本实施例中, 第一获取模块 81获取 UE的 MBMS业务信息, 第二获取模块 82获取相邻小区载波的 MBMS业务分布信息, 选择模块 83根据第一获取模块 81 接收的 MBMS业务信息和第二获取模块 82获取的相邻小区载波的 MBMS业务分 布信息, 选择目标小区的载波, 当 MBMS业务信息中包括 UE正在进行的至少两 个 MBMS业务或将要进行的至少两个 MBMS业务时, 选择模块 83选择提供优先 级较高的 MBMS业务的相邻小区的载波作为目标小区的载波, 选择模块 83还可 以选择提供 UE正在进行的 MBMS业务或将要进行的 MBMS业务的相邻小区的载 波中负载较小的载波作为目标小区的载波, 从而实现正在使用 MBMS业务的 UE 进行小区间切换时, 为该 UE选择适当的载波, 以保证 MBMS业务的连续性, 同 时也可以将要进行 MBMS业务的 UE迁移到合适的载波上, 从而实现正在使用 MBMS业务的 UE进行小区间切换时, 为该 UE选择适当的载波, 以保证 MBMS业 务的连续性, 同时也可以将要进行 MBMS业务的 UE迁移到合适的载波上。
上述接入网基站设备提供的各个实施中, 一个相邻小区可以对应至少两个 载波, 此时适用于 LTE-A网络, 也可以一个相邻小区也可以对应一个载波, 此时 适用于 LTE/SAE网络。
通信系统实施例
如图 7所示, 为发明通信系统实施例的结构示意图, 可以包括 UE 101和接入 网基站设备 102。
其中, UE 101将 UE 101的 MBMS业务信息发送给接入网基站设备 102, 接入 网基站设备 102接收 UE 101发送的 UE 101的 MBMS业务信息,获取相邻小区载波 的 MBMS业务分布信息, 根据相邻小区载波的 MBMS业务分布信息和 UE 101的 MBMS业务信息选择目标小区的载波, 从而实现正在使用 MBMS业务的 UE进行 小区间切换时, 为该 UE选择适当的载波, 以保证 MBMS业务的连续性, 同时也 可以将要进行 MBMS业务的 UE迁移到合适的载波上, 从而实现正在使用 MBMS 业务的 UE进行小区间切换时, 为该 UE选择适当的载波, 以保证 MBMS业务的连 续性, 同时也可以将要进行 MBMS业务的 UE迁移到合适的载波上。
需要说明的是, UE 101可以包括前述 UE实施例的任一模块, 接入网基站设 备 102可以包括前述接入网基站设备实施例的任一模块, 在此不再赘述。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案而非限制, 尽 管参照较佳实施例对本发明进行了详细说明, 本领域的普通技术人员应当理解, 可以对本发明的技术方案进行修改或者等同替换, 而不脱离本发明技术方案的 精神和范围。

Claims

权利 要求 书
1、 一种载波选择方法, 其特征在于, 包括:
获取用户设备的多媒体广播组播业 ^言息;
获取相邻小区载波的多媒体广播组播业务分布信息;
根据所述用户设备的多媒体广播组播业务信息和所述相邻小区载波的多媒 体广播组播业务分布信息, 选择目标小区的载波。
2、 根据权利要求 1所述的方法, 其特征在于, 所述获取用户设备的多媒体 广播组播业务信息包括:
接收所述用户设备在正在进行的多媒体广播组播业务的状态发生变化或将 要进行多媒体广播组播业务时发送的媒体访问控制元素, 所述媒体访问控制元 素中包括所述用户设备的多媒体广播组播业务信息; 或
向所述用户设备发送测量控制消息 , 接收所述用户设备发送的测量报告 , 所述测量报告中包括用户设备的多媒体广播组播业务信息; 或
接收所述用户设备在正在进行的多媒体广播组播业务的状态发生变化或将 要进行多媒体广播组播业务时发送的无线资源控制信令, 所述无线资源控制信 令中包括所述用户设备的多媒体广播组播业务信息; 或
接收所述用户设备在与接入网基站建立无线资源控制连接时发送的无线资 源控制连接建立消息, 所述无线资源控制连接建立消息中包括所述用户设备的 多媒体广播组播业务信息; 或
当监测到所述用户设备发生切换时, 向所述用户设备发送无线资源控制连 接重配置消息, 接收所述用户设备发送的无线资源控制连接重配置响应消息, 所述无线资源控制连接重配置响应消息中包括所述用户设备的多媒体广播组播 业务信息。
3、 根据权利要求 1所述的方法, 其特征在于, 所述获取相邻小区载波的多 媒体广播组播业务分布信息包括:
接收相邻的接入网基站在与接入网基站建立连接时发送的所述相邻小区载 波的多媒体广播组播业务分布信息; 或
接收相邻的接入网基站在所述相邻小区载波的多媒体广播组播业务分布信 息发生变化时发送的 X2接口信令面消息, 所述 X2接口信令面消息中包括变化后 的相邻小区载波的多媒体广播组播业务分布信息。
4、 根据权利要求 1所述的方法, 其特征在于, 所述多媒体广播组播业务信 息包括所述用户设备正在进行的多媒体广播组播业务的信息或将要进行的多媒 体广播组播业务的信息;
所述多媒体广播组播业务分布信息包括所述相邻小区的载波信息以及所述 相邻小区的载波提供的多媒体广播组播业务的信息。
5、 根据权利要求 4所述的方法, 其特征在于, 所述根据所述用户设备的多 媒体广播组播业务信息和所述相邻小区载波的多媒体广播组播业务分布信息, 选择目标小区的载波包括:
当所述相邻小区的载波提供的多媒体广播组播业务包括所述用户设备正在 进行的多媒体广播组播业务或将要进行的多媒体广播组播业务时 , 选择所述相 邻小区的载波作为所述目标小区的载波。
6、 根据权利要求 5所述的方法, 其特征在于, 所述用户设备的多媒体广播 組播业务信息中还包括所述用户设备正在进行的至少两个多媒体广播組播业务 的优先级或将要进行的至少两个多媒体广播组播业务的优先级;
所述选择所述相邻小区的载波作为所述目标小区的载波包括: 选择提供优 先级较高的多媒体广播组播业务的相邻小区的载波作为所述目标小区的载波。
7、 根据权利要求 5所述的方法, 其特征在于, 所述选择所述相邻小区的载 波作为所述目标小区的载波包括: 选择所述相邻小区的载波中负载较小的载波 作为所述目标小区的载波。
8、 一种载波选择方法, 其特征在于, 包括:
将用户设备的多媒体广播组播业务信息发送给接入网基站, 以便于所述接 入网基站根据所述多媒体广播组播业务信息和相邻小区载波的多媒体广播组播 业务分布信息选择目标小区的载波。
9、 根据权利要求 8所述的方法, 其特征在于, 所述将用户设备的多媒体广 播组播业务信息发送给接入网基站包括:
当所述用户设备正在进行的多媒体广播组播业务的状态发生变化或将要进 行多媒体广播组播业务时, 向所述接入网基站发送媒体访问控制元素, 所述访 问控制元素中包括所述用户设备的多媒体广播組播业务信息; 或
接收所述接入网基站发送的测量控制消息 , 向所述接入网基站发送测量报 告, 所述测量报告中包括所述用户设备的多媒体广播组播业^言息; 或
当所述用户设备正在进行的多媒体广播组播业务的状态发生变化或将要进 行多媒体广播组播业务时, 构建无线资源控制信令, 向所述接入网基站发送所 述无线资源控制信令, 所述无线资源控制信令中包括所述用户设备的多媒体广 播组播业务信息; 或
当所述用户设备与所述接入网基站建立无线资源控制连接时, 向所述接入 网基站发送无线资源控制连接建立消息, 所述连接建立消息中包括所述用户设 备的多媒体广播组播业务信息; 或
接收所述接入网基站监测到所述用户设备发生切换时发送的无线资源控制 连接重配置消息, 向所述接入网基站发送无线资源控制连接重配置响应消息, 所述无线资源控制连接重配置响应消息中包括所述用户设备的多媒体广播组播 业务信息。
10、 根据权利要求 8或 9所述的方法, 其特征在于, 所述用户设备的多媒体 广播组播业务信息中包括所述用户设备正在进行的多媒体广播组播业务的信息 或将要进行的多媒体广播组播业务的信息。
11、 根据权利要求 10所述的方法, 其特征在于, 所述用户设备的多媒体广 播组播业务信息中还包括所述用户设备正在进行的至少两个多媒体广播组播业 务的优先级或将要进行的至少两个多媒体广播组播业务的优先级。
12、 一种接入网基站设备, 其特征在于, 包括: 第一获取模块, 用于获取用户设备的多媒体广播组播业务信息; 第二获取模块, 用于获取相邻小区载波的多媒体广播组播业务分布信息; 选择模块 , 用于根据所述用户设备的多媒体广播组播业务信息和所述相邻 小区载波的多媒体广播组播业务分布信息, 选择目标小区的载波。
13、 根据权利要求 12所述的设备, 其特征在于, 所述第一获取模块包括: 第一获取子模块, 用于接收所述用户设备在正在进行的多媒体广播组播业 务的状态发生变化或将要进行多媒体广播组播业务时发送的媒体访问控制元 素, 所述媒体访问控制元素中包括所述用户设备的多媒体广播组播业务信息; 或
第二获取子模块, 用于向所述用户设备发送测量控制消息, 接收所述用户 设备发送的测量报告, 所述测量报告中包括所述用户设备的多媒体广播组播业 务信息; 或
第三获取子模块, 用于接收所述用户设备在与接入网基站建立无线资源控 制连接时发送的无线资源控制连接建立消息, 所述连接建立消息中包括所述用 户设备的多媒体广播组播业^言息; 或
第四获取子模块, 用于当监测到所述用户设备发生切换时, 向所述用户设 备发送无线资源控制连接重配置消息, 接收所述用户设备发送的无线资源控制 连接重配置响应消息, 所述无线资源控制连接重配置响应消息中包括所述用户 设备的多媒体广播组播业务信息; 或
第五获取子模块 , 用于接收所述用户设备在正在进行的多媒体广播组播业 务的状态发生变化或将要进行多媒体广播组播业务时发送的无线资源控制信 令, 所述无线资源控制信令中包括所述用户设备的多媒体广播组播业^言息。
14、 根据权利要求 12所述的设备, 其特征在于, 所述第二获取模块包括: 第一接口单元 , 用于接收相邻的接入网基站与所述接入网基站建立连接时 发送的所述相邻小区载波的多媒体广播组播业务分布信息; 或
第二接口单元, 用于接收相邻的接入网基站在所述相邻小区载波的多媒体 广播组播业务分布信息发生变化时发送的 X2接口信令面消息, 所述 X2接口信令 面消息中包括变化后的相邻小区载波的多媒体广播组播业务分布信息。
15、 根据权利要求 12所述的设备, 其特征在于, 所述多媒体广播组播业务 信息包括所述用户设备正在进行的多媒体广播组播业务的信息或将要进行的多 媒体广播组播业务的信息;
所述多媒体广播组播业务分布信息包括所述相邻小区的载波信息以及所述 相邻小区的载波提供的多媒体广播组播业务的信息。
16、 根据权利要求 12所述的设备, 其特征在于, 所述选择模块还用于当所 述相邻小区的载波提供的多媒体广播组播业务包括所述用户设备正在进行的多 媒体广播组播业务或将要进行的多媒体广播组播业务时, 选择所述相邻小区的 载波作为所述目标小区的载波。
17、 根据权利要求 12所述的设备, 其特征在于, 所述用户设备的多媒体广 播组播业务信息中还包括所述用户设备正在进行的至少两个多媒体广播组播业 务或将要进行的至少两个多媒体广播组播业务的优先级;
所述选择模块还用于选择提供优先级较高的多媒体广播组播业务的相邻小 区的载波作为所述目标小区的载波。
18、 根据权利要求 12所述的设备, 其特征在于, 所述选择模块还用于当所 述相邻小区的载波提供的多媒体广播组播业务包括所述用户设备正在进行的多 媒体广播组播业务或将要进行的多媒体广播组播业务时, 选择所述相邻小区的 载波中负载较小的载波作为所述目标小区的载波。
19、 一种用户设备, 其特征在于, 包括:
第一发送模块, 用于将所述用户设备的多媒体广播组播业务信息发送给接 入网基站, 以便于所述接入网基站根据所述多媒体广播组播业务信息和相邻小 区载波的多媒体广播组播业务分布信息选择目标小区的载波。
20、 根据权利要求 19所述的用户设备, 其特征在于, 所述第一发送模块包 括: 第一发送子模块, 用于当所述用户设备正在进行的多媒体广播组播业务的 状态发生变化或将要进行多媒体广播组播业务时 , 向所述接入网基站发送媒体 访问控制元素, 所述媒体访问控制元素的保留字段中包括所述用户设备的多媒 体广播组播业务信息; 或
第二发送子模块, 用于接收所述接入网基站发送的测量控制消息, 向所述 接入网基站发送测量报告, 所述测量报告中包括所述用户设备的多媒体广播组 播业务信息; 或
第三发送子模块, 用于当所述用户设备与所述接入网基站建立无线资源控 制连接时, 向所述接入网基站发送无线资源控制连接建立消息, 所述连接建立 消息中包括所述用户设备的多媒体广播组播业务信息; 或
第四发送子模块 , 用于接收所述接入网基站检测到所述用户设备发生切换 时发送的无线资源控制连接重配置消息, 向所述接入网基站发送无线资源控制 连接重配置响应消息, 所述无线资源控制连接重配置响应消息中包括所述用户 设备的多媒体广播组播业务信息; 或
第五发送子模块, 用于当所述用户设备正在进行的所述多媒体广播组播业 务的状态发生变化或将要进行多媒体广播组播业务时, 构建无线资源控制信令, 所述无线资源控制信令中包括所述用户设备的多媒体广播組播业务信息, 向所 述接入网基站发送所述无线资源控制信令。
21、 根据权利要求 19或 20所述的用户设备, 其特征在于, 所述用户设备的 多媒体广播组播业务信息中包括所述用户设备正在进行的多媒体广播组播业务 的信息或将要进行的多媒体广播组播业务的信息。
22、 根据权利要求 19或 20所述的用户设备, 其特征在于, 还包括: 优先级设定模块, 用于当所述用户设备正在进行至少两个多媒体广播组播 业务或所述用户设备将要进行至少两个多媒体广播组播业务时, 为所述至少两 个多媒体广播组播业务设定优先级;
所述用户设备的多媒体广播组播业务信息中还包括所述优先级。
23、 一种通信系统, 其特征在于, 包括用户设备和接入网基站设备; 所述用户设备用于将所述用户设备的多媒体广播组播业务信息发送给所述 接入网基站设备;
所述接入网基站设备用于获取所述用户设备的多媒体广播组播业务信息, 获取相邻小区载波的多媒体广播组播业务分布信息, 根据所述用户设备的多媒 体广播组播业务信息和所述相邻小区载波的多媒体广播组播业务分布信息, 选 择目标小区的载波。
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