WO2015062474A1 - 一种组通信信息通知方法及设备 - Google Patents

一种组通信信息通知方法及设备 Download PDF

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Publication number
WO2015062474A1
WO2015062474A1 PCT/CN2014/089680 CN2014089680W WO2015062474A1 WO 2015062474 A1 WO2015062474 A1 WO 2015062474A1 CN 2014089680 W CN2014089680 W CN 2014089680W WO 2015062474 A1 WO2015062474 A1 WO 2015062474A1
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WIPO (PCT)
Prior art keywords
serving cell
terminal
cell
mbsfn area
current serving
Prior art date
Application number
PCT/CN2014/089680
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English (en)
French (fr)
Inventor
赵亚利
张惠英
***
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电信科学技术研究院
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Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to EP14857645.7A priority Critical patent/EP3065426B1/en
Priority to US15/033,257 priority patent/US10075883B2/en
Publication of WO2015062474A1 publication Critical patent/WO2015062474A1/zh

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    • 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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • 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
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • 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
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a group communication information notification method and device.
  • Group communication means that the network provides data transmission to all terminals in the group at the same time in a fast and efficient manner.
  • LTE Long Term Evolution
  • the end-to-end transmission delay requirement of the group communication is 150 ms.
  • the network architecture is currently preferred to reuse the existing MBMS (Multimedia Broadcast Multicast Service). Business) architecture and some modifications to the existing MBMS network architecture to meet this latency requirement.
  • MBMS Multimedia Broadcast Multicast Service
  • the MBMS network architecture of the LTE system is shown in Figure 1.
  • the logical entities in the MBMS network architecture mainly include: MME (Mobility Management Entity), MBMS GW (MBMS Gateway, MBMS Gateway), and MCE (Multi-cell/multicast Coordination Entity).
  • eNB Evolved Node B, evolved base station
  • P-GW Packet Data Network Gateway
  • BM-SC Broadcast Multicast Service Center
  • the M3 interface provides session management related functions between the MME and the MCE;
  • the M2 interface provides session management and MBMS scheduling information between the MCE and the eNB;
  • the M1 interface provides MBMS service transmission between the MBMS GW and the eNB.
  • Group communication terminals can be divided into two categories according to different terminal roles in group communication:
  • a transmitting terminal a terminal authorized by the group communication server to send group communication data to the group communication server, and the uplink data between the sending terminal and the group communication server is transmitted by using a unicast mode;
  • Receiving terminal A terminal authorized by the group communication server to receive group communication data delivered by the group communication server, and the receiving terminal can receive group communication data from the network through unicast or multicast mode.
  • the embodiment of the present application provides a group communication information notification method and device, which are used to implement notification of group communication information based on the MBMS network architecture, and provide guarantee for meeting the requirements of group communication for service continuity.
  • a group communication information notification method includes:
  • the base station sends the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal according to the neighboring cell of the current serving cell of the terminal and the received MBSFN area information, where the terminal is the terminal served by the current serving cell.
  • the inter-base station exchanges the MBSFN area information of the respective serving cell, including: the base station establishes a request message through the interactive X2 interface, and exchanges the MBSFN area information of the respective serving cell; or The response message is established through the interaction X2 interface, and the MBSFN area information of the respective serving cell is exchanged.
  • the base station configures the update message through the base station to exchange the MBSFN area information of the respective serving cell.
  • the base station sends the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal according to the neighboring cell of the current serving cell of the terminal and the received MBSFN area information, including: The base station determines, according to the neighboring cell of the current serving cell of the terminal and the received MBSFN area information, that the MBSFN area to which the neighboring cell of the current serving cell of the terminal belongs is different from the MBSFN area to which the current serving cell of the terminal belongs, the current serving cell of the terminal The MBSFN area information of the neighboring cell is sent to the terminal.
  • the base station sends the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal according to the neighboring cell of the current serving cell of the terminal and the received MBSFN area information, where the terminal
  • the terminal serving the current serving cell includes: after receiving the MBSFN area information, the base station determines whether the terminal is interested in the group communication service or is performing a group communication service; if the base station determines the terminal to the group communication service sense If the interest or the group communication service is in progress, the MBSFN area information of the neighboring cell of the current serving cell of the terminal is sent to the terminal by using dedicated signaling.
  • the dedicated signaling includes: radio resource control signaling, media access control signaling, or L1 signaling.
  • the base station determines whether there is a terminal in the current serving cell that is interested in the group communication service or is performing a group communication service; if the base station determines that the current serving cell has a sense of group communication service
  • the terminal that is interested or is in the group communication service broadcasts the MBSFN area information of the neighboring cell of the current serving cell of the terminal in the current serving cell.
  • the MBSFN area information of the neighboring cell includes one or any combination of the following information:
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell, and an MBSFN area identifier to which the cell identifier belongs;
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell in all neighboring cells
  • a group communication information notification method includes:
  • the terminal determines, according to the received MBSFN area information, whether the target serving cell of the terminal and the current serving cell belong to the same MBSFN area.
  • the determining whether the target serving cell of the terminal and the current serving cell belong to the same MBSFN area includes:
  • the terminal When the terminal enters the current serving cell, it is determined whether the target serving cell and the current serving cell belong to the same MBSFN area, and the target serving cell is all neighboring cells of the current serving cell; or
  • the signal strength of the current serving cell of the terminal is smaller than the signal strength of the neighboring cell, determining whether the target serving cell and the current serving cell belong to the same MBSFN area, where the target serving cell meets the condition of cell handover or reselection.
  • the signal quality of all neighboring cells, or all neighboring cells satisfying the condition of cell handover or reselection is ranked as the first N neighboring cells after being ranked from strong to weak, N ⁇ 1; or
  • the target serving cell and the current serving cell belong to the same MBSFN area, where the target serving cell is All neighboring cells satisfying the condition of cell handover or reselection, or the signal quality of all neighboring cells satisfying the condition of cell handover or reselection, according to the top N neighboring cells sorted from strong to weak, N ⁇ 1.
  • the method further includes: the terminal acquiring the system of the target serving cell And obtaining information required to establish a unicast bearer or an MBMS bearer in the target serving cell according to the system information of the target serving cell.
  • the terminal acquires system information of the target serving cell, and acquires information required to establish a unicast bearer or an MBMS bearer in the target serving cell according to the system information of the target serving cell, including:
  • the terminal acquires system information of the target serving cell, acquires multicast control channel information in the system information, and determines whether there is a group that is interested or in progress in the MBSFN area to which the target serving cell belongs.
  • Communication service
  • the method further includes: establishing, by the terminal, the current serving cell The unicast bearer is switched to the target serving cell by unicast.
  • the handover to the target serving cell further includes: the terminal determining, according to the system information of the target serving cell and the multicast control channel information, whether the target serving cell provides the group communication service interested in the terminal by using an MBMS manner, if If yes, the MBMS receiving group communication service is used in the target serving cell, and the unicast bearer of the target serving cell is released.
  • the terminal receives the MBSFN area information of the neighboring cell of the current serving cell of the terminal, and the terminal includes: receiving, by the terminal, a broadcast message in the current serving cell of the terminal. And receiving, by the base station, the MBSFN area information of the neighboring cell of the current serving cell of the terminal, or the terminal receiving the MBSFN area information of the neighboring cell of the current serving cell of the terminal that is sent by the base station by receiving the dedicated signaling.
  • the MBSFN area information of the neighboring cell includes one or any combination of the following information:
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell, and an MBSFN area identifier to which the cell identifier belongs;
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell in all neighboring cells
  • a base station comprising:
  • a first interface module configured to exchange, with other base stations, MBSFN area information that the respective serving cell belongs to;
  • a second interface module configured to send MBSFN area information of a neighboring cell of the current serving cell of the terminal to the terminal according to the neighboring cell of the current serving cell of the terminal and the MBSFN area information received by the first interface module, where the terminal A terminal serving the current serving cell.
  • the first interface module is specifically configured to: establish an application message by interacting with the X2 interface, and interact with the MBSFN area information of the respective serving cell; or establish a response message by interacting with the X2 interface, and interact with the respective serving cell.
  • the MBSFN area information; or, by the base station configuration update message, the MBSFN area information to which the respective serving cell belongs is exchanged.
  • the first processing module is further included;
  • the first processing module is configured to determine, according to the neighboring cell of the current serving cell of the terminal, and the received MBSFN area information, the MBSFN area to which the neighboring cell of the current serving cell of the terminal belongs and the MBSFN area to which the current serving cell of the terminal belongs Whether they are the same;
  • the second interface module is specifically configured to: when the first processing module determines that the difference is different, send the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal.
  • the second processing module is further configured to: after the first interface module receives the MBSFN area information, determine whether the terminal is interested in or is in the group communication service. Performing a group communication service; the second interface module is specifically configured to: if the second processing module determines that the terminal is interested in a group communication service or is performing a group communication service, the terminal currently serving the cell by using dedicated signaling
  • the MBSFN area information of the neighboring cell is sent to the terminal.
  • the dedicated signaling includes: radio resource control signaling, media access control signaling, or L1 signaling.
  • the third processing module configured to determine, after the first interface module receives the MBSFN area information, whether the current serving cell is interested in the group communication service or is in the group.
  • the second interface module is specifically configured to: if the third processing module determines that the current serving cell has a terminal that is interested in the group communication service or is performing a group communication service, The current serving cell broadcasts MBSFN area information of the neighboring cell of the current serving cell of the terminal.
  • the MBSFN area information of the neighboring cell includes one or any combination of the following information:
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell, and an MBSFN area identifier to which the cell identifier belongs;
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell in all neighboring cells
  • a base station comprising:
  • the processor is configured to read a program in the memory, and perform the following process: interacting with other base stations to exchange MBSFN area information of the respective serving cell; and selecting, according to the neighboring cell of the current serving cell of the terminal, the MBSFN area information received by the first interface module Transmitting, by the transceiver, the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal, where the terminal is a terminal serving the current serving cell;
  • transceiver for receiving and transmitting data under the control of a processor
  • a memory that holds the data that the processor uses when performing operations.
  • the processor is specifically configured to read a program in the memory, and perform the following process: establishing a request message by interacting with the X2 interface, and interacting with the MBSFN area information of the respective serving cell; or The interaction X2 interface establishes a response message, and exchanges MBSFN area information that the respective serving cell belongs to; or, through the base station configuration update message, exchanges MBSFN area information that the respective serving cell belongs to.
  • the processor is further configured to read a program in the memory and perform the following process:
  • the MBSFN area information of the neighboring cell of the current serving cell of the terminal is sent to the terminal.
  • the processor is further configured to read a program in the memory, and perform the following process: after the first interface module receives the MBSFN area information, determine whether the terminal is interested in the group communication service or The group communication service is being performed; if the second processing module determines that the terminal is interested in the group communication service or is performing group communication service, the MBSFN area information of the neighboring cell of the current serving cell of the terminal is sent to the Said terminal.
  • the dedicated signaling includes: radio resource control signaling, media access control signaling, or L1 signaling.
  • the processor is further configured to read a program in the memory, and perform the following process: after the first interface module receives the MBSFN area information, determine whether the current serving cell is interested in or is in progress on the group communication service. a terminal of a group communication service; if the third processing module determines that the current serving cell has a terminal that is interested in the group communication service or is performing a group communication service, by broadcasting the current service of the terminal in the current serving cell MBSFN area information of the neighboring cell of the cell.
  • the MBSFN area information of the neighboring cell includes one or any combination of the following information:
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell, and an MBSFN area identifier to which the cell identifier belongs;
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell in all neighboring cells
  • a terminal comprising:
  • An interface module configured to receive MBSFN area information of a neighboring cell of the current serving cell of the terminal sent by the base station;
  • a determining module configured to determine, according to the MBSFN area information received by the interface module, whether the target serving cell of the terminal and the current serving cell belong to the same MBSFN area.
  • the determining module is specifically configured to: when the terminal enters the current serving cell, determine whether the target serving cell and the current serving cell belong to the same MBSFN area, and the target service The serving cell is all neighboring cells of the current serving cell; or
  • the signal strength of the current serving cell of the terminal is smaller than the signal strength of the neighboring cell, determining whether the target serving cell and the current serving cell belong to the same MBSFN area, where the target serving cell meets the condition of cell handover or reselection.
  • the signal quality of all neighboring cells, or all neighboring cells satisfying the condition of cell handover or reselection is ranked as the first N neighboring cells after being ranked from strong to weak, N ⁇ 1; or
  • the target serving cell and the current serving cell belong to the same MBSFN area, where the target serving cell is All neighboring cells satisfying the condition of cell handover or reselection, or the signal quality of all neighboring cells satisfying the condition of cell handover or reselection, according to the top N neighboring cells sorted from strong to weak, N ⁇ 1.
  • the method further includes an acquiring module, where the acquiring module is configured to acquire the target when the determining module determines that the target serving cell of the terminal and the current serving cell belong to different MBSFN areas.
  • the system information of the serving cell acquires information required to establish a unicast bearer or an MBMS bearer in the target serving cell according to the system information of the target serving cell.
  • the acquiring module is further configured to: after the terminal switches to the target serving cell, determine, according to the system information of the target serving cell and the multicast control channel information, whether the target serving cell provides the terminal sense by using an MBMS manner.
  • the group communication service of interest if any, uses the MBMS reception group communication service in the target serving cell by the bearer processing module, and releases the unicast bearer of the target serving cell.
  • the method further includes a bearer processing module, configured to establish a unicast bearer in the current serving cell when determining that the target serving cell of the terminal and the current serving cell belong to different MBSFN areas, and Switch to the target serving cell by unicast.
  • a bearer processing module configured to establish a unicast bearer in the current serving cell when determining that the target serving cell of the terminal and the current serving cell belong to different MBSFN areas, and Switch to the target serving cell by unicast.
  • the method further includes a bearer processing module
  • the acquiring module is specifically configured to acquire system information of the target serving cell, acquire multicast control channel information in the system information, and determine whether the terminal is interested in the MBSFN area to which the target serving cell belongs. Or an ongoing group communication service; if so, storing system information and multicast control channel information of the target serving cell, the system information and multicast control channel information being used for switching or reselecting at the terminal Performing MBMS reception when the target serving cell is described; if not, instructing the bearer processing module to establish a unicast bearer in the current serving cell, or instructing the bearer processing module to be in the target according to system information of the target serving cell The serving cell establishes a unicast bearer.
  • the interface module is specifically configured to: receive, by using a broadcast message in the current serving cell of the terminal, the MBSFN area information of the neighboring cell of the current serving cell of the terminal sent by the base station; or receive the dedicated signaling.
  • the MBSFN area information of the neighboring cell includes one or any combination of the following information:
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell, and an MBSFN area identifier to which the cell identifier belongs;
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell in all neighboring cells
  • a terminal comprising:
  • the processor is configured to: read a program in the memory, and perform the following operations: receiving, by the transceiver, MBSFN area information of a neighboring cell of the current serving cell of the terminal sent by the base station; determining, according to the MBSFN area information received by the interface module, Whether the target serving cell of the terminal and the current serving cell belong to the same MBSFN area;
  • transceiver for receiving and transmitting data under the control of a processor
  • a memory that holds the data that the processor uses when performing operations.
  • the processor is configured to read a program in the memory, and perform the following operations: when the terminal enters the current serving cell, determine whether the target serving cell and the current serving cell belong to the same An MBSFN area, where the target serving cell is all neighboring cells of the current serving cell; or
  • the signal strength of the current serving cell of the terminal is smaller than the signal strength of the neighboring cell, determining whether the target serving cell and the current serving cell belong to the same MBSFN area, where the target serving cell meets the condition of cell handover or reselection.
  • the signal quality of all neighboring cells, or all neighboring cells satisfying the condition of cell handover or reselection is ranked as the first N neighboring cells after being ranked from strong to weak, N ⁇ 1; or
  • the target serving cell and the current serving cell belong to the same MBSFN area, where the target serving cell is All neighboring cells satisfying the condition of cell handover or reselection, or the signal quality of all neighboring cells satisfying the condition of cell handover or reselection, according to the top N neighboring cells sorted from strong to weak, N ⁇ 1.
  • the processor is configured to read a program in the memory, and perform the following operations: when the determining module determines that the target serving cell of the terminal and the current serving cell belong to different MBSFN areas, Obtaining system information of the target serving cell, and acquiring information required to establish a unicast bearer or an MBMS bearer in the target serving cell according to the system information of the target serving cell.
  • the processor is configured to read a program in the memory, and perform the following operations: after the terminal switches to the target serving cell, determine, according to the system information of the target serving cell and the multicast control channel information, whether the target serving cell is The group communication service of the terminal is provided by the MBMS mode, and if yes, the MBMS is used to receive the group communication service in the target serving cell by using the bearer processing module, and the unicast bearer of the target serving cell is released.
  • the processor is configured to read a program in the memory, and perform the following operations: when determining that the target serving cell of the terminal and the current serving cell belong to different MBSFN areas, in the current The serving cell establishes a unicast bearer and switches to the target serving cell through unicast.
  • the processor is configured to read a program in the memory and perform the following operations:
  • Obtaining system information of the target serving cell acquiring multicast control channel information in the system information, and determining whether there is a group communication service that is interested or in progress in the MBSFN area to which the target serving cell belongs; And if yes, saving system information of the target serving cell and multicast control channel information, where the system information and multicast control channel information are used for performing MBMS reception when the terminal switches or reselects to the target serving cell And if not, instructing the bearer processing module to establish a unicast bearer in the current serving cell, or instructing the bearer processing module to establish a unicast bearer in the target serving cell according to system information of the target serving cell.
  • the processor is configured to read a program in the memory, and perform the following operations: receiving, by the base station, a broadcast message, and receiving, by the base station, MBSFN area information of a neighboring cell of the current serving cell of the terminal sent by the base station; or And receiving the MBSFN area information of the neighboring cell of the current serving cell of the terminal that is sent by the base station by receiving the dedicated signaling.
  • the MBSFN area information of the neighboring cell includes one or any combination of the following information:
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell, and an MBSFN area identifier to which the cell identifier belongs;
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell in all neighboring cells
  • the MBSFN area information that the respective serving cell belongs to is exchanged between the base stations, and the base station sends the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal, so that the terminal can switch in the cell or Before the reselection, the MBSFN area information of the neighboring cell of the current serving cell is obtained, which provides a guarantee for establishing unicast in the current serving cell or establishing a unicast or MBMS service bearer in the target serving cell in advance, thereby reducing the terminal moving between cells.
  • the interruption delay of the group communication service ensures the continuity of the group communication service.
  • FIG. 1 is a schematic diagram of an MBMS network architecture of an LTE system in the prior art
  • FIG. 2 is a schematic flowchart of processing on a base station side in a group communication information notification process according to an embodiment of the present application
  • FIG. 3 is a schematic flowchart of processing on a terminal side in a group communication information notification process according to an embodiment of the present disclosure
  • FIG. 4 is a signaling flowchart of a group communication information notification process according to an embodiment of the present application.
  • FIG. 5 is a second signaling flowchart of a group communication information notification process according to an embodiment of the present application.
  • 6A, 6B, 6C, and 6D are schematic structural diagrams of a base station according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • the prior art can utilize the existing MBMS network architecture to implement group communication, in some scenarios, for example, when the terminal moves out of the MBSFN area coverage, it may cause multicast and unicast or different multicast.
  • Switching or reselection when the terminal fails to receive the MBMS service in the target serving cell, establishes a unicast connection with the target serving cell or creates a new MBMS bearer, which leads to a multicast and unicast switching or reselection process or multicast in the group communication process.
  • the group communication service has a long interruption time, which cannot meet the requirements of group communication for business continuity.
  • the embodiment of the present application provides a group communication information notification scheme based on the network architecture of the existing LTE system, which provides guarantee for reducing the group communication interruption delay and ensuring the continuity of the group communication service.
  • the base station can exchange the MBSFNarea information of the respective serving cell through the X2 interface, and the base station notifies the terminal of the MBSFN area information related to the neighboring cell of the current serving cell of the terminal served by the base station. Further, the terminal may determine, according to the received MBSFN area information, whether the target serving cell to be moved in belongs to the same MBSFN area as the current serving cell. If it belongs to the same MBSFN area, the MBMS mode can continue to receive the group communication data. Otherwise, the system information of the target serving cell can be read in advance, and the target information is obtained while the current serving cell continues to use the MBMS receiving group communication data.
  • the serving cell establishes information required for unicast bearers or MBMS bearers.
  • the solution provided by the embodiment of the present application can enable the terminal to know in advance whether the target serving cell that is switched or reselected belongs to the same MBSFN area as the current serving cell, thereby determining whether the subsequent unicast transmission can be used to maintain MBMS reception or newly establish an MBMS bearer. In order to reduce the interruption time of the group communication service when the terminal moves between cells, the business continuity of the group communication is guaranteed.
  • FIG. 2 is a schematic diagram of a processing flow of a base station side in a group communication information notification process according to an embodiment of the present disclosure. As shown in the figure, the process may include:
  • Step 201 The base station exchanges MBSFN area information of the respective serving cell.
  • Step 202 The base station sends the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal according to the neighboring cell of the current serving cell of the terminal and the received MBSFN area information, where the terminal is the terminal served by the current serving cell. .
  • the base station may be configured according to the neighboring cell of the current serving cell of the terminal and the received MBSFN area for each terminal served by the serving cell. The information is used to determine the MBSFN area information of the neighboring cell of the current serving cell of the terminal, and the MBSFN area information of the neighboring cell of the current serving cell of the terminal is sent to the terminal for each terminal served by the serving cell.
  • the base station can exchange the MBSFN area information of the respective serving cell through the X2 interface.
  • the inter-base station may exchange the MBSFN area information of the respective serving cell according to the X2 interface in one of the following manners:
  • Manner 1 Interacting the X2 SETUP RESPONSE (X2 Interface Setup Request) message, and interacting with the MBSFN area information of the respective serving cell;
  • Manner 2 interacting with the XSF SETUP RESPONSE (X2 interface establishment response) message, and interacting with the MBSFN area information of the respective serving cell;
  • Manner 3 The MBSFN area information of the respective serving cell is exchanged through the initiated ENB CONFIGURATION UPDATE message.
  • the X2 interface is an inter-base station interface, and the X2 interface can implement interconnection between base stations, which is equivalent to an interface between a base station and a base station.
  • the X2 interface is divided into an X2 user plane and an X2 control plane.
  • the user plane of the X2 interface provides user data transmission between base stations.
  • the base stations can exchange their respective managed cell related information (Served CellInformation).
  • Served CellInformation managed cell related information
  • the MBMS-related information in the Served Cell Information based on the X2 interface interaction in the existing protocol is only MBSFN Subframe Info and MBMS Service Area Identity List.
  • the embodiment of the present application can carry the MBSFN area information of the serving cell by extending the Served Cell Information of the X2 interface.
  • Table 1 shows an extended Served Cell Information format.
  • the MBSFN Subframe Info information element and the MBMS Service Area Identity List information element related to the MBMS are existing information units, and the MBSFN area ID information element is an information unit added in the embodiment of the present application, and is used to carry the current service of the terminal.
  • the base station may also exchange the MBSFN area information of the respective serving cell through the newly defined message, or add a new information unit to the existing X2 interface-based message to carry the MBSFN area information of the serving cell.
  • the MBSFN area information of the neighboring cell sent by the base station may include one or more of the following information:
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell, and an MBSFN area identifier to which the cell identifier belongs;
  • a cell identifier of a neighboring cell that belongs to a different MBSFN area of the current serving cell in all neighboring cells
  • the base station may determine, according to the neighboring cell of the current serving cell of the terminal and the received MBSFN area information, that the MBSFN area to which the neighboring cell of the current serving cell of the terminal belongs and the MBSFN area to which the current serving cell of the terminal belongs are not At the same time, the MBSFN area information of the neighboring cell of the current serving cell of the terminal is sent to the terminal. If the MBSFN area to which the neighboring cell of the current serving cell belongs is the same as the MBSFN area to which the current serving cell of the terminal belongs, the MBSFN area information of the neighboring cell of the current serving cell of the terminal may not be sent to the terminal. In this way, the signaling overhead of the air interface can be saved.
  • the base station may first determine whether the terminal is interested in group communication or is performing group communication service.
  • the MBSFN area information of the neighboring cell of the current serving cell of the terminal is sent to the terminal only when it is judged that the terminal is interested in the group communication service or is performing the group communication service.
  • the base station may determine, according to the MBMS interest information reported by the terminal, whether the terminal is interested in the group communication service or is performing a group communication service, for example, if the terminal reports that the MBMS service on the frequency of the current serving cell is interested, the base station It can be judged that the terminal is interested in the group communication service.
  • the base station can also determine whether the terminal is interested in the group communication service or is performing the group communication service by using the counting result. For example, if the base station does not count 0 for a certain MBMS service, the terminal can determine that the terminal has the MBMS service. Interested or receiving.
  • the terminal may currently use the dedicated signaling (the MBSFN area information of the neighboring cell of the pre-terminal serving cell in the dedicated signaling)
  • the MBSFN area information of the neighboring cell of the serving cell is sent to the terminal.
  • the dedicated signaling used may be RRC (Radio Resource Control) signaling, MAC (Media Access Control) signaling, or L1 signaling.
  • the base station may determine whether there is interest in the group communication service or the group communication service in the current serving cell before transmitting the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal. And determining, by the terminal, the MBSFN area information of the neighboring cell of the current serving cell of the terminal by transmitting the MBSFN area information of the neighboring cell of the current serving cell of the current serving cell to the terminal.
  • a newly defined SIB System Information Block
  • an existing SIB may be introduced to carry the MBSFN area information.
  • the second and third preferred embodiments of step 202 above may be implemented in conjunction with the first preferred embodiment of step 202 above.
  • the terminal is interested in group communication or is performing group communication service, and the terminal currently serves the cell.
  • the MBSFN area to which the neighboring cell belongs is different from the MBSFN area to which the current serving cell belongs, the MBSFN area information of the neighboring cell of the current serving cell of the terminal is sent to the terminal.
  • the conditions of the second preferred embodiment are first determined, and the application is not limited.
  • step 202 If the first preferred implementation of step 202 is implemented in conjunction with the third preferred embodiment, then there is a terminal in the current serving cell that is interested in the group communication service or is in the group communication service, and the terminal is currently serving.
  • the MBSFN area to which the neighboring cell of the cell belongs is different from the MBSFN area to which the current serving cell of the terminal belongs, the MBSFN area information of the neighboring cell of the current serving cell of the terminal is sent to the terminal.
  • the conditions of the third preferred embodiment are first determined, and the present application is not limited thereto.
  • the MBSFN area information that the respective serving cell belongs to is exchanged between the base stations, and the base station transmits the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal, so that the terminal can switch in the cell or Before the selection, the MBSFN area information of the neighboring cell of the current serving cell is obtained, which provides guarantee for establishing unicast in the current serving cell or establishing unicast or MBMS service bearer in the target serving cell in advance, thereby reducing the time group of the terminal moving between cells.
  • the interruption of the communication service ensures the continuity of the communication service of the group.
  • the terminal After receiving the MBSFN area information of the neighboring cell of the current serving cell of the terminal sent by the base station, the terminal may further perform corresponding processing.
  • FIG. 3 is a schematic diagram of a process flow of a terminal side in a group communication information notification process according to an embodiment of the present disclosure. As shown in the figure, the process may include:
  • Step 301 The terminal receives the MBSFN area information of the neighboring cell of the current serving cell of the terminal that is sent by the base station.
  • the terminal may use the broadcast mode or the dedicated signaling mode to receive the MBSFN area information of the neighboring cell of the current serving cell of the terminal that is sent by the base station, and the specific implementation manner may be the same as that described above, and is not described in detail herein.
  • the specific content of the MBSFN area information of the neighboring cell of the current serving cell may be the same as that described above, and will not be described in detail herein.
  • Step 302 The terminal determines, according to the received MBSFN area information, whether the target serving cell of the terminal and the current serving cell belong to the same MBSFN area.
  • the terminal may determine that the target serving cell and the current serving cell belong to the same MBSFN area.
  • the following describes several trigger conditions used in the embodiments of the present application:
  • Trigger condition 1 When the terminal enters the current serving cell of the terminal, it begins to determine whether the target serving cell and the current serving cell belong to the same MBSFN area. In the triggering condition, the target serving cell is all neighboring cells of the current serving cell of the terminal.
  • Trigger condition 2 When the signal strength of the current serving cell of the terminal is smaller than the signal strength of the neighboring cell, it is determined whether the target serving cell and the current serving cell belong to the same MBSFN area. In the triggering condition, the target serving cell is all neighboring cells satisfying the cell handover condition or the cell reselection condition, or the signal quality in all neighboring cells satisfying the cell handover condition or the cell reselection condition is sorted from strong to weak.
  • the first N (N ⁇ 1) neighboring cells.
  • Trigger condition 3 When the signal of the current serving cell of the terminal is lower than the threshold 1 or the signal quality of the neighboring cell is higher than the threshold 2, it is determined whether the target serving cell and the current serving cell belong to the same MBSFN area.
  • the target serving cell is all neighboring cells satisfying the cell handover condition or the cell reselection condition, or the signal quality in all neighboring cells satisfying the cell handover condition or the cell reselection condition is sorted from strong to weak.
  • the processing overhead on the terminal can be reduced.
  • the above trigger condition 2 or trigger condition 3 it can be seen that only the terminal needs to switch or reselect to the target service. The above judgment is made only when the community is used.
  • the terminal may also determine the MBSFN area information of the neighboring cell of the current serving cell of the terminal that is sent by the base station.
  • the terminal may further acquire system information of the target serving cell, and obtain the system information according to the target serving cell.
  • the target serving cell establishes a bearer, or when the terminal switches or reselects the target serving cell, performs MBMS service as soon as possible according to the information to ensure continuity of the group communication service.
  • the terminal may obtain the system information of the target serving cell, obtain the MCCH (Multicast Channel Control Channel) information in the system information, and determine whether the terminal has a sense of the terminal in the MBSFN area to which the target serving cell belongs. Interest or ongoing group communication services (the method of judgment can be as described above). If yes, the system information and the MCCH information of the target serving cell are saved; otherwise, the unicast bearer is established in the current serving cell, or a unicast bearer is established in the target serving cell according to the system information of the target serving cell. Alternatively, the terminal first establishes a unicast bearer in the current serving cell, and then switches to the target serving cell in a unicast manner.
  • MCCH Multicast Channel Control Channel
  • the terminal may determine, according to the system information of the target serving cell and the MCCH information, whether the target serving cell provides the group communication service of interest by the MBMS mode, and if yes, may start in the target serving cell.
  • the MBMS receives and releases the unicast bearer with the target serving cell.
  • the MBSFN area information that the respective serving cell belongs to is exchanged between the base stations, and the base station transmits the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal, so that the terminal can switch in the cell or Before the selection, the MBSFN area information of the neighboring cell of the current serving cell is obtained, which provides a guarantee for establishing a unicast bearer in the current serving cell or establishing a unicast or MBMS service bearer in the target serving cell in advance, thereby reducing the terminal moving between cells.
  • the interruption delay of the group communication service ensures the continuity of the group communication service.
  • the process can include:
  • Step 401 The base station 1 and the base station 2 exchange the MBSFN area information of the respective serving cell through an X2 interface related process, such as X2 SETUP REQUEST, X2 SETUP RESPONSE or ENB CONFIGURATION UPDATE.
  • X2 interface related process such as X2 SETUP REQUEST, X2 SETUP RESPONSE or ENB CONFIGURATION UPDATE.
  • Step 402 The base station 1 broadcasts the MBSFN area information related to the neighboring cell of the serving cell in the terminal serving cell. Specifically, the base station may broadcast the neighboring cell of the serving cell in the terminal serving cell by introducing a new SIB. MBSFN area information.
  • the MBSFN area information of the neighboring cell of the serving cell is the same as that described above, and will not be described in detail herein.
  • the base station may notify the neighboring cell's MBSFN area information by broadcast only when the MBSFN area to which the neighboring cell belongs and the MBSFN area to which the current serving cell belongs.
  • Step 403 The terminal determines whether the target serving cell and the current serving cell belong to the same MBSFN area. There are a variety of triggering conditions for this step, as described above, and will not be described in detail herein.
  • step 404 if the terminal determines that the target serving cell and the current serving cell belong to the same MBSFN area, no additional operations may be performed. Further, if the terminal is currently performing group communication services, the terminal may continue to use the MBMS mode to receive the group. Communication data. If the terminal determines that the target serving cell and the current serving cell belong to different MBSFN areas, then optionally, step 404 may be performed.
  • Step 404 The terminal reads the target serving cell system information and/or the MCCH information in advance.
  • the terminal reads the MIB (Master Information Block) and/or the SIB of the target serving cell in advance. If the SIB13 can be read from the target serving cell, the MCCH of the target serving cell needs to be further read, and It is determined whether there is a group communication service in the MBSFN area to which the target serving cell belongs or is in progress. Further, the following processing may be performed according to the judgment result:
  • MIB Master Information Block
  • the terminal saves one or more of the MIB, SIB, and MCCH information of the target serving cell while maintaining the current MBMS reception, so as to switch or reselect the target.
  • the MBMS reception can be performed as soon as possible in the serving cell to ensure the business continuity of the group communication;
  • the terminal If there is no group communication service that is interested or in progress by the terminal, the terminal establishes a unicast bearer in the current serving cell in advance while maintaining the current MBMS reception, or establishes a unicast bearer in the target serving cell according to system information of the target serving cell.
  • the service interruption delay can meet the requirements of the group communication and ensure the continuity of the group communication service.
  • the terminal may determine, according to the TMGI (Temporary Mobile Group Identity), whether there is a group communication service that is interested or in progress in the MBSFN area to which the target serving cell belongs.
  • TMGI Temporal Mobile Group Identity
  • the base station determines whether there is a terminal in the current serving cell that is interested in the group communication service or is in the group communication service. Correspondingly, if it is determined that there is a terminal in the current serving cell that is interested in the group communication service or is in the group communication service, step 402 is performed; otherwise, the process may be ended.
  • the process can include:
  • Step 501 The base station interacts with the MBSFN area information of the respective serving cell.
  • the base station 1 and the base station 2 can exchange the MBSFN area information of the respective serving cell through an X2 interface related process, such as X2 SETUP REQUEST, X2 SETUP RESPONSE or ENB CONFIGURATION UPDATE.
  • Step 502 The base station determines whether the terminal is interested in the group communication service or is in the group communication service. If it is determined that the terminal is interested in the group communication service or is performing the group communication service, step 503 may be further performed. Otherwise, the process may be ended. In a specific implementation, the base station may determine, according to the MBMS interest information or the counting result reported by the terminal, whether the terminal is interested in the group communication service or is performing a group communication service.
  • Step 503 The base station notifies the terminal of the MBSFN area information of the neighboring cell of the serving cell by using dedicated signaling in the terminal serving cell.
  • the dedicated signaling used by the base station may be RRC signaling, MAC signaling, or L1 signaling.
  • the content of the MBSFN area information of the neighboring cell of the serving cell may be the same as described above, and will not be described in detail herein.
  • the base station can notify the MBSFN area information of the neighboring cell of the terminal through dedicated signaling only when the MBSFN area to which the neighboring cell belongs and the MBSFN area to which the current serving cell belongs.
  • Step 504 The terminal determines whether the target serving cell and the current serving cell belong to the same MBSFN area. There are a variety of triggering conditions for this step, as described above, and will not be described in detail herein.
  • the terminal may further perform step 505.
  • Step 505 The terminal reads the target serving cell system information and/or the MCCH information in advance.
  • the specific implementation of this step may be the same as step 404 in the process shown in FIG. 4, and will not be described in detail herein.
  • the embodiment of the present application further provides a base station.
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present application.
  • the base station can include:
  • the first interface module 601 is configured to exchange, with other base stations, MBSFN area information that the respective serving cell belongs to;
  • the second interface module 602 is configured to send, according to the neighboring cell of the current serving cell of the terminal and the MBSFN area information received by the first interface module, the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal, where The terminal is a terminal serving the current serving cell.
  • the first interface module 601 may establish a request message by using an X2 interface to exchange MBSFN area information of the respective serving cell; or, by using an interactive X2 interface, to establish a response message, and exchange MBSFN area information of the respective serving cell; or,
  • the base station configures an update message and exchanges MBSFN area information that the respective serving cell belongs to.
  • a first processing module 603 may also be included.
  • the first processing module 603 is configured to determine, according to the neighboring cell of the current serving cell of the terminal, and the received MBSFN area information, whether the MBSFN area to which the neighboring cell of the current serving cell of the terminal belongs and the MBSFN area to which the current serving cell of the terminal belongs the same.
  • the second interface module 602 may send the MBSFN area information of the neighboring cell of the current serving cell of the terminal to the terminal when the first processing module determines that the difference is different.
  • the second processing module 604 is further configured to determine, after the first interface module 601 receives the MBSFN area information, whether the terminal is interested in the group communication service or The group communication service is in progress, the terminal is a terminal serving the current serving cell; the second interface module 602 is specifically configured to: if the second processing module 604 determines that the terminal is interested in the group communication service or is performing a group communication service Then, the MBSFN area information of the neighboring cell of the current serving cell of the terminal is sent to the terminal by using dedicated signaling.
  • the dedicated signaling includes: RRC signaling, MAC signaling, or L1 signaling.
  • a third processing module 605 is further included.
  • the third processing module 605 is configured to determine, after the first interface module 601 receives the MBSFN area information, whether the current serving cell is interested in the group communication service. Or the terminal that is in the group communication service; the second interface module 602 is specifically configured to: if the third processing module determines that the current serving cell has a terminal that is interested in the group communication service or is performing a group communication service, The MBSFN area information of the neighboring cell of the current serving cell of the terminal is broadcasted by the current serving cell, and the MBSFN area information of the neighboring cell of the current serving cell of the terminal is sent to the terminal.
  • the content included in the MBSFN area information of the neighboring cell is the same as that described above, and details are not described herein again.
  • the embodiment of the present application further provides a base station.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present application.
  • the base station can include a processor 700, a transceiver 710, and a memory 720.
  • the processor 700 is configured to read a program in the memory 720, and perform the following process: interact with other base stations to access MBSFN area information of the respective serving cell; according to the neighboring cell of the current serving cell of the terminal and the MBSFN received by the first interface module.
  • the area information, the MBSFN area information of the neighboring cell of the current serving cell of the terminal is sent to the terminal by the transceiver 710, where the terminal is a terminal served by the current serving cell;
  • the transceiver 710 is configured to receive and transmit data under the control of the processor 700.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 700 and various circuits of memory represented by memory 720.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 710 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 can store data used by the processor 700 in performing operations.
  • the embodiment of the present application further provides a terminal.
  • FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • the terminal may include an interface module 801, a determining module 802, and may further include an obtaining module 803, and may further include a bearer processing module 804:
  • the interface module 801 is configured to receive, by the base station, the MBSFN area information of the multicast multicast single frequency network of the neighboring cell of the current serving cell of the terminal;
  • the determining module 802 is configured to determine, according to the MBSFN area information received by the interface module, whether the target serving cell of the terminal and the current serving cell belong to the same MBSFN area.
  • the determining module 802 may determine, when the terminal enters the current serving cell, whether the target serving cell and the current serving cell belong to the same MBSFN area, where the target serving cell is all the current serving cell a neighboring cell; or, when the signal strength of the current serving cell of the terminal is smaller than the signal strength of the neighboring cell, determining whether the target serving cell and the current serving cell belong to the same MBSFN area, and the target serving cell satisfies the cell handover Or all neighboring cells of the reselection condition, or the signal quality of all neighboring cells satisfying the cell handover or reselection condition according to the top N neighboring cells sorted from strong to weak, N ⁇ 1; or, when the terminal is currently If the signal of the serving cell is lower than the first threshold or the signal quality of the neighboring cell is higher than the second threshold, it is determined whether the target serving cell and the current serving cell belong to the same MBSFN area, and the target serving cell meets the cell handover or All neighboring cells of the selected condition, or signal quality in
  • the obtaining module 803 is configured to acquire system information of the target serving cell when the determining module 802 determines that the target serving cell of the terminal and the current serving cell belong to different MBSFN areas, according to the target serving cell.
  • the system information acquires information required to establish a unicast bearer or an MBMS bearer in the target serving cell.
  • the acquiring module 803 may acquire system information of the target serving cell, acquire multicast control channel information in the system information, and determine whether the terminal is interested in the MBSFN area to which the target serving cell belongs or An ongoing group communication service; if so, storing system information and multicast control channel information of the target serving cell, the system information and multicast control channel information being used to switch or reselect to the terminal Performing MBMS reception in the target serving cell; if not, instructing the bearer processing module to establish a unicast bearer in the current serving cell, or instructing the bearer processing module to serve the target service according to system information of the target serving cell The cell establishes a unicast bearer.
  • the acquiring module 803 may further determine, according to the system information of the target serving cell and the multicast control channel information, that the target serving cell provides the terminal interested in the MBMS manner after the terminal is handed over to the target serving cell.
  • the group communication service if any, uses the MBMS reception group communication service in the target serving cell by the bearer processing module, and releases the unicast bearer of the target serving cell.
  • the bearer processing module 804 may establish a unicast bearer in the current serving cell when the target serving cell of the terminal and the current serving cell belong to different MBSFN areas, and switch to the target service by using a unicast mode. Community.
  • the interface module 801 may receive the MBSFN area information of the neighboring cell of the current serving cell of the terminal sent by the base station by receiving a broadcast message in the current serving cell of the terminal; or receiving the dedicated signaling, and receiving the sending by the base station The MBSFN area information of the neighboring cell of the current serving cell of the terminal.
  • the content of the MBSFN area information of the neighboring cell may be the same as that described above, and details are not described herein again.
  • the embodiment of the present application further provides a terminal.
  • FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • the terminal can include a processor 900, a transceiver 910, and a memory 920.
  • the processor 900 is configured to read a program in the memory 920, and perform the following process: receiving, by the transceiver 910, MBSFN area information of a neighboring cell of the current serving cell of the terminal sent by the base station; and receiving, according to the MBSFN area, the interface module Determining, by the information, whether the target serving cell of the terminal and the current serving cell belong to the same MBSFN area;
  • the transceiver 910 is configured to receive and transmit data under the control of the processor 900.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 900 and various circuits of memory represented by memory 920.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 910 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 930 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 900 in performing operations.
  • the embodiment of the present application provides a method for reducing the delay of group communication data transmission based on the existing LTE system network architecture.
  • the method can reduce the interruption time of the group communication service when the terminal moves without changing the existing network architecture, thereby meeting the requirements of the group communication for business continuity.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

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Abstract

本申请公开了一种组通信信息通知方法及设备。本申请方法包括：基站间交互各自服务小区归属的多播组播单频网络MBSFN区域信息；基站根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，所述终端为所述当前服务小区服务的终端。采用本申请可以在基于MBMS网络架构实现组通信信息的通知，为满足组通信对业务连续性的要求提供保证。

Description

一种组通信信息通知方法及设备
本申请要求在2013年10月30日提交中国专利局、申请号为201310527009.3、发明名称为“一种组通信信息通知方法及设备”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
本申请涉及通信技术领域，尤其涉及一种组通信信息通知方法及设备。
背景技术
组通信就是网络以快速有效的方式同时向组内所有终端提供数据传输。对于LTE(Long Term Evolution，长期演进)***，组通信端到端传输时延要求为150ms，为了满足该时延要求，目前倾向于网络架构重用现有MBMS(Multimedia Broadcast Multicast Service，多媒体广播多播业务)架构，并在现有MBMS网络架构上进行一定修改以满足该时延要求。
LTE***的MBMS网络架构如图1所示。该MBMS网络架构中的逻辑实体主要包括：MME(Mobility Management Entity，移动管理实体)、MBMS GW(MBMS Gateway，MBMS网关)、MCE(Multi-cell/multicast Coordination Entity，多小区/多播协调实体)、eNB(Evolved Node B，演进型基站)、P-GW(Packet Data Network Gateway，分组数据网网关)、BM-SC(Broadcast Multicast Service Center，广播多播业务中心)。其中，M3接口在MME和MCE间提供会话(Session)管理相关功能；M2接口在MCE和eNB间提供会话管理、传递MBMS调度信息等功能；M1接口在MBMS GW和eNB之间提供MBMS业务传输。
根据组通信中终端角色的不同，可以将组通信终端划分为两类：
发送终端：被组通信服务器授权可以向组通信服务器发送组通信数据的终端，发送终端和组通信服务器之间的上行数据通过单播方式传输；
接收终端：被组通信服务器授权可以接收其下发的组通信数据的终端，接收终端可以通过单播或者多播方式从网络接收组通信数据。
目前利用LTE***支持公共安全组通信是一个比较迫切的需求，为了满足这个需求，一种解决方案就是利用现有的MBMS网络架构实现组通信的功能。但是目前还没有组通信的相关信息的通知方案，以解决终端移动到不同MBSFN(Multicast Broadcast Single Frequency Network，多播广播单频网络)区域或者移出MBSFN区域时如何满足组通信对业务连续性的要求。
发明内容
本申请实施例提供了一种组通信信息通知方法及设备，用以在基于MBMS网络架构实现组通信信息的通知，为满足组通信对业务连续性的要求提供保证。
一种组通信信息通知方法，包括：
基站间交互各自服务小区归属的MBSFN区域信息；
基站根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，所述终端为所述当前服务小区服务的终端。
根据上述组通信信息通知方法的实施例，所述基站间交互各自服务小区归属的MBSFN区域信息，包括：基站间通过交互X2接口建立请求消息，交互各自服务小区归属的MBSFN区域信息；或者，基站间通过交互X2接口建立响应消息，交互各自服务小区归属的MBSFN区域信息；或者，基站间通过基站配置更新消息，交互各自服务小区归属的MBSFN区域信息。
根据上述组通信信息通知方法的实施例，基站根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，包括：所述基站根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，判断所述终端当前服务小区的邻小区归属的MBSFN区域与所述终端当前服务小区归属的MBSFN区域不同时，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
根据上述任意组通信信息通知方法的实施例，基站根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，所述终端为所述当前服务小区服务的终端，包括：基站接收到MBSFN区域信息后判断所述终端是否对组通信业务感兴趣或正在进行组通信业务；若所述基站判断所述终端对组通信业务感兴趣或正在进行组通信业务，则通过专用信令将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。其中，所述专用信令包括：无线资源控制信令、媒体访问控制信令或L1信令。或者，基站接收到MBSFN区域信息后判断所述当前服务小区内是否有对组通信业务感兴趣或正在进行组通信业务的终端；若所述基站判断所述当前服务小区内有对组通信业务感兴趣或正在进行组通信业务的终端，则通过在所述当前服务小区广播所述终端当前服务小区的邻小区的MBSFN区域信息。
根据上述任意组通信信息通知方法的实施例，所述邻小区的MBSFN区域信息，包括以下信息之一或任意组合：
所有邻小区标识，以及所述所有邻小区标识各自归属的MBSFN区域标识；
所有邻小区标识，以及所述所有邻小区标识中的每个邻小区标识对应的指示信息，所述指示信息用于指示邻小区是否与所述当前服务小区归属相同的MBSFN区域；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识，以及所述小区标识归属的MBSFN区域标识；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识；
所有邻小区中与所述当前服务小区归属于相同MBSFN区域的邻小区的小区标识。
一种组通信信息通知方法，包括：
终端接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息；
所述终端根据接收到的MBSFN区域信息，确定所述终端的目标服务小区与所述当前服务小区是否归属于同一MBSFN区域。
根据上述组通信信息通知方法的实施例，所述判断所述终端的目标服务小区与所述当前服务小区是否属于同一MBSFN区域，包括：
当所述终端进入所述当前服务小区时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为所述当前服务小区的所有邻小区；或者，
当所述终端当前服务小区的信号强度小于邻小区的信号强度时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1；或者，
当所述终端当前服务小区的信号低于第一门限或者邻小区信号质量高于第二门限时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1。
根据上述任意组通信信息通知方法实施例，若所述终端判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域，则还包括：所述终端获取所述目标服务小区的***信息，根据所述目标服务小区的***信息获取在所述目标服务小区建立单播承载或MBMS承载所需的信息。
其中，所述终端获取所述目标服务小区的***信息，根据所述目标服务小区的***信息获取在所述目标服务小区建立单播承载或MBMS承载所需的信息，包括：
所述终端获取所述目标服务小区的***信息，获取所述***信息中的多播控制信道信息，并判断所述目标服务小区归属的MBSFN区域内是否有所述终端感兴趣或正在进行的组通信业务；
若有，则保存所述目标服务小区的***信息和多播控制信道信息，所述***信息和多播控制信道信息用于在所述终端切换或重选到所述目标服务小区时进行MBMS接收；
若无，则在所述当前服务小区建立单播承载，或者根据所述目标服务小区的***信息在所述目标服务小区建立单播承载。
根据上述任意组通信信息通知方法的实施例，若所述终端判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域，则还包括：所述终端在所述当前服务小区建立单播承载，并通过单播方式切换到目标服务小区。
其中，切换到目标服务小区后还包括：所述终端根据所述目标服务小区的***信息和多播控制信道信息，判断目标服务小区是否通过MBMS方式提供所述终端感兴趣的组通信业务，如果有，则在所述目标服务小区使用MBMS接收组通信业务，并释放所述目标服务小区的单播承载。
根据上述任意组通信信息通知方法的实施例，所述终端接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息，包括：所述终端通过在所述终端当前服务小区内接收广播消息，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息；或者，所述终端通过接收专用信令，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息。
根据上述任意组通信信息通知方法的实施例，所述邻小区的MBSFN区域信息，包括以下信息之一或任意组合：
所有邻小区标识，以及所述所有邻小区标识各自归属的MBSFN区域标识；
所有邻小区标识，以及所述所有邻小区标识中的每个邻小区标识对应的指示信息，所述指示信息用于指示邻小区是否与所述当前服务小区归属相同的MBSFN区域；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识，以及所述小区标识归属的MBSFN区域标识；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识；
所有邻小区中与所述当前服务小区归属于相同MBSFN区域的邻小区的小区标识。
一种基站，包括：
第一接口模块，用于与其它基站交互各自服务小区归属的MBSFN区域信息；
第二接口模块，用于根据终端当前服务小区的邻小区以及所述第一接口模块接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，所述终端为所述当前服务小区服务的终端。
根据上述基站的实施例，所述第一接口模块具体用于，通过交互X2接口建立请求消息，交互各自服务小区归属的MBSFN区域信息；或者，通过交互X2接口建立响应消息，交互各自服务小区归属的MBSFN区域信息；或者，通过基站配置更新消息，交互各自服务小区归属的MBSFN区域信息。
根据上述任意基站的实施例，还包括第一处理模块；
所述第一处理模块，用于根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，判断所述终端当前服务小区的邻小区归属的MBSFN区域与所述终端当前服务小区归属的MBSFN区域是否相同；
所述第二接口模块具体用于，在所述第一处理模块判断为不同时，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
根据上述任意基站的实施例，还包括第二处理模块；所述第二处理模块，用于在所述第一接口模块接收到MBSFN区域信息后判断所述终端是否对组通信业务感兴趣或正在进行组通信业务；所述第二接口模块具体用于，若所述第二处理模块判断所述终端对组通信业务感兴趣或正在进行组通信业务，则通过专用信令将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。其中，所述专用信令包括：无线资源控制信令、媒体访问控制信令或L1信令。或者，还包括第三处理模块；所述第三处理模块，用于在所述第一接口模块接收到MBSFN区域信息后判断所述当前服务小区内是否有对组通信业务感兴趣或正在进行组通信业务的终端；所述第二接口模块具体用于，若所述第三处理模块判断所述当前服务小区内有对组通信业务感兴趣或正在进行组通信业务的终端，则通过在所述当前服务小区广播所述终端当前服务小区的邻小区的MBSFN区域信息。
根据上述任意基站的实施例，所述邻小区的MBSFN区域信息，包括以下信息之一或任意组合：
所有邻小区标识，以及所述所有邻小区标识各自归属的MBSFN区域标识；
所有邻小区标识，以及所述所有邻小区标识中的每个邻小区标识对应的指示信息，所述指示信息用于指示邻小区是否与所述当前服务小区归属相同的MBSFN区域；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识，以及所述小区标识归属的MBSFN区域标识；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识；
所有邻小区中与所述当前服务小区归属于相同MBSFN区域的邻小区的小区标识。
一种基站，包括：
处理器，用于读取存储器中的程序，执行下列过程：与其它基站交互各自服务小区归属的MBSFN区域信息；根据终端当前服务小区的邻小区以及所述第一接口模块接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息通过收发机发送给所述终端，所述终端为所述当前服务小区服务的终端；
收发机，用于在处理器的控制下接收和发送数据；
存储器，用于保存处理器在执行操作时所使用的数据。
根据上述基站的实施例，处理器，具体用于读取存储器中的程序，执行下列过程：通过交互X2接口建立请求消息，交互各自服务小区归属的MBSFN区域信息；或者，通过 交互X2接口建立响应消息，交互各自服务小区归属的MBSFN区域信息；或者，通过基站配置更新消息，交互各自服务小区归属的MBSFN区域信息。
根据上述任意基站的实施例，处理器，还用于读取存储器中的程序，执行下列过程：
根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，判断所述终端当前服务小区的邻小区归属的MBSFN区域与所述终端当前服务小区归属的MBSFN区域是否相同；
在所述第一处理模块判断为不同时，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
根据上述任意基站的实施例，处理器，还用于读取存储器中的程序，执行下列过程：在所述第一接口模块接收到MBSFN区域信息后判断所述终端是否对组通信业务感兴趣或正在进行组通信业务；若所述第二处理模块判断所述终端对组通信业务感兴趣或正在进行组通信业务，则通过专用信令将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。其中，所述专用信令包括：无线资源控制信令、媒体访问控制信令或L1信令。或者，处理器，还用于读取存储器中的程序，执行下列过程：在所述第一接口模块接收到MBSFN区域信息后判断所述当前服务小区内是否有对组通信业务感兴趣或正在进行组通信业务的终端；若所述第三处理模块判断所述当前服务小区内有对组通信业务感兴趣或正在进行组通信业务的终端，则通过在所述当前服务小区广播所述终端当前服务小区的邻小区的MBSFN区域信息。
根据上述任意基站的实施例，所述邻小区的MBSFN区域信息，包括以下信息之一或任意组合：
所有邻小区标识，以及所述所有邻小区标识各自归属的MBSFN区域标识；
所有邻小区标识，以及所述所有邻小区标识中的每个邻小区标识对应的指示信息，所述指示信息用于指示邻小区是否与所述当前服务小区归属相同的MBSFN区域；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识，以及所述小区标识归属的MBSFN区域标识；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识；
所有邻小区中与所述当前服务小区归属于相同MBSFN区域的邻小区的小区标识。
一种终端，包括：
接口模块，用于接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息；
确定模块，用于根据所述接口模块接收到的MBSFN区域信息，确定所述终端的目标服务小区与所述当前服务小区是否归属于同一MBSFN区域。
根据上述终端的实施例，所述确定模块具体用于，当所述终端进入所述当前服务小区时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服 务小区为所述当前服务小区的所有邻小区；或者，
当所述终端当前服务小区的信号强度小于邻小区的信号强度时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1；或者，
当所述终端当前服务小区的信号低于第一门限或者邻小区信号质量高于第二门限时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1。
根据上述任意终端的实施例，还包括获取模块；所述获取模块，用于在所述确定模块判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域时，获取所述目标服务小区的***信息，根据所述目标服务小区的***信息获取在所述目标服务小区建立单播承载或MBMS承载所需的信息。
其中，所述获取模块还用于，在所述终端切换到目标服务小区后，根据所述目标服务小区的***信息和多播控制信道信息，判断目标服务小区是否通过MBMS方式提供所述终端感兴趣的组通信业务，如果有，则通过所述承载处理模块在所述目标服务小区使用MBMS接收组通信业务，并释放所述目标服务小区的单播承载。
根据上述任意终端的实施例，还包括承载处理模块，用于在判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域时，在所述当前服务小区建立单播承载，并通过单播方式切换到目标服务小区。
根据上述任意终端的实施例，还包括承载处理模块；
所述获取模块具体用于，获取所述目标服务小区的***信息，获取所述***信息中的多播控制信道信息，并判断所述目标服务小区归属的MBSFN区域内是否有所述终端感兴趣或正在进行的组通信业务；若有，则保存所述目标服务小区的***信息和多播控制信道信息，所述***信息和多播控制信道信息用于在所述终端切换或重选到所述目标服务小区时进行MBMS接收；若无，则指示所述承载处理模块在所述当前服务小区建立单播承载，或者指示所述承载处理模块根据所述目标服务小区的***信息在所述目标服务小区建立单播承载。
其中，所述接口模块具体用于，通过在所述终端当前服务小区内接收广播消息，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息；或者，通过接收专用信令，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息。
根据上述任意终端的实施例，所述邻小区的MBSFN区域信息，包括以下信息之一或任意组合：
所有邻小区标识，以及所述所有邻小区标识各自归属的MBSFN区域标识；
所有邻小区标识，以及所述所有邻小区标识中的每个邻小区标识对应的指示信息，所述指示信息用于指示邻小区是否与所述当前服务小区归属相同的MBSFN区域；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识，以及所述小区标识归属的MBSFN区域标识；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识；
所有邻小区中与所述当前服务小区归属于相同MBSFN区域的邻小区的小区标识。
一种终端，包括：
处理器，用于读取存储器中的程序，执行下列操作：通过收发器接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息；根据所述接口模块接收到的MBSFN区域信息，确定所述终端的目标服务小区与所述当前服务小区是否归属于同一MBSFN区域；
收发机，用于在处理器的控制下接收和发送数据；
存储器，用于保存处理器在执行操作时所使用的数据。
根据上述终端的实施例，处理器，用于读取存储器中的程序，执行下列操作：当所述终端进入所述当前服务小区时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为所述当前服务小区的所有邻小区；或者，
当所述终端当前服务小区的信号强度小于邻小区的信号强度时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1；或者，
当所述终端当前服务小区的信号低于第一门限或者邻小区信号质量高于第二门限时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1。
根据上述任意终端的实施例，处理器，用于读取存储器中的程序，执行下列操作：在所述确定模块判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域时，获取所述目标服务小区的***信息，根据所述目标服务小区的***信息获取在所述目标服务小区建立单播承载或MBMS承载所需的信息。
其中，处理器，用于读取存储器中的程序，执行下列操作：在所述终端切换到目标服务小区后，根据所述目标服务小区的***信息和多播控制信道信息，判断目标服务小区是否通过MBMS方式提供所述终端感兴趣的组通信业务，如果有，则通过所述承载处理模块在所述目标服务小区使用MBMS接收组通信业务，并释放所述目标服务小区的单播承载。
根据上述任意终端的实施例，处理器，用于读取存储器中的程序，执行下列操作：在判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域时，在所述当前服务小区建立单播承载，并通过单播方式切换到目标服务小区。
根据上述任意终端的实施例，处理器，用于读取存储器中的程序，执行下列操作：
获取所述目标服务小区的***信息，获取所述***信息中的多播控制信道信息，并判断所述目标服务小区归属的MBSFN区域内是否有所述终端感兴趣或正在进行的组通信业务；若有，则保存所述目标服务小区的***信息和多播控制信道信息，所述***信息和多播控制信道信息用于在所述终端切换或重选到所述目标服务小区时进行MBMS接收；若无，则指示所述承载处理模块在所述当前服务小区建立单播承载，或者指示所述承载处理模块根据所述目标服务小区的***信息在所述目标服务小区建立单播承载。
其中，处理器，用于读取存储器中的程序，执行下列操作：通过在所述终端当前服务小区内接收广播消息，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息；或者，通过接收专用信令，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息。
根据上述任意终端的实施例，所述邻小区的MBSFN区域信息，包括以下信息之一或任意组合：
所有邻小区标识，以及所述所有邻小区标识各自归属的MBSFN区域标识；
所有邻小区标识，以及所述所有邻小区标识中的每个邻小区标识对应的指示信息，所述指示信息用于指示邻小区是否与所述当前服务小区归属相同的MBSFN区域；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识，以及所述小区标识归属的MBSFN区域标识；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识；
所有邻小区中与所述当前服务小区归属于相同MBSFN区域的邻小区的小区标识。
本申请的上述实施例中，通过基站间交互各自服务小区归属的MBSFN区域信息，并由基站将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，从而使终端可以在小区切换或重选前获知当前服务小区的邻小区的MBSFN区域信息，为提前在当前服务小区建立单播或者提前在目标服务小区建立单播或MBMS业务承载提供了保证，进而可以降低终端在小区间移动时组通信业务的中断时延，保证组通信业务的连续性。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领 域的普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术中LTE***的MBMS网络架构示意图；
图2为本申请实施例提供的组通信信息通知过程中基站侧的处理流程示意图；
图3为本申请实施例提供的组通信信息通知过程中终端侧的处理流程示意图；
图4为本申请实施例提供的组通信信息通知过程的信令流程图之一；
图5为本申请实施例提供的组通信信息通知过程的信令流程图之二；
图6A、图6B图6C、图6D为本申请实施例提供的基站的结构示意图；
图7为本申请实施例提供的基站的结构示意图；
图8为本申请实施例提供的终端的结构示意图；
图9为本申请实施例提供的终端的结构示意图。
具体实施方式
现有技术虽然可以利用现有的MBMS网络架构来实现组通信，但在一些场景下，例如终端移动出MBSFN area(MBSFN区域)覆盖范围时，会导致多播与单播或者不同多播之间的切换或重选，当终端在目标服务小区接收MBMS业务失败后，与目标服务小区建立单播连接或者新建MBMS承载，这样导致组通信过程中多播与单播切换或重选过程或者多播与多播切换或重选过程中组通信业务中断时间较长，不能满足组通信对业务连续性的要求。
基于此，本申请实施例给出了一种基于现有LTE***网络架构的组通信信息通知方案，为降低组通信中断时延以及保证组通信业务连续性提供保障。
本申请实施例提供的方案中，基站间可通过X2接***互各自服务小区归属的MBSFNarea信息，基站将其所服务的终端的当前服务小区的邻小区相关的MBSFN area信息通知该终端。进一步的，终端可根据接收到的MBSFN area信息判断要移入的目标服务小区是否与当前服务小区属于同一个MBSFN area。如果属于同一个MBSFN area，则可继续使用MBMS方式接收组通信数据，否则，可以保持在当前服务小区继续使用MBMS接收组通信数据的前提下，预先读取目标服务小区的***信息，获取与目标服务小区建立单播承载或者MBMS承载所需的信息。
本申请实施例提供的方案，可以使终端可以提前获知切换或重选的目标服务小区是否与当前服务小区属于相同MBSFN area，从而确定后续采用单播传输还是可以保持MBMS接收或者新建立MBMS承载，以降低终端在小区间移动时组通信业务的中断时间，保证组通信的业务连续性。
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述，显然，所描述的实施例仅仅是本申请一部份实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
参见图2，为本申请实施例提供的组通信信息通知过程中基站侧的处理流程示意图，如图所示，该流程可包括：
步骤201：基站间交互各自服务小区归属的MBSFN area信息。
步骤202：基站根据终端当前服务小区的邻小区以及接收到的MBSFN area信息，将终端当前服务小区的邻小区的MBSFN area信息发送给所述终端，所述终端为所述当前服务小区服务的终端。具体实施时，基站可在接收到其它基站发送来的该其它基站的服务小区归属的MBSFN area信息后，针对服务小区服务的每个终端，根据终端当前服务小区的邻小区以及接收到的MBSFN area信息，确定出终端当前服务小区的邻小区的MBSFN area信息，并针对该服务小区服务的每个终端，将终端当前服务小区的邻小区的MBSFN area信息发送给终端。
上述步骤201中，基站间可通过X2接***互各自服务小区归属的MBSFN area信息。具体实施时，基站间可基于X2接口通过如下方式中的一种方式，交互各自服务小区归属的MBSFN area信息：
方式一：通过交互X2 SETUP RESPONSE(X2接口建立请求)消息，交互各自服务小区归属的MBSFN area信息；
方式二：通过交互X2 SETUP RESPONSE(X2接口建立响应)消息，交互各自服务小区归属的MBSFN area信息；
方式三：通过发起的ENB CONFIGURATION UPDATE(基站配置更新)消息，交互各自服务小区归属的MBSFN area信息。
X2接口为基站间接口，X2接口可实现基站之间的互连，相当于是基站与基站的接口。X2接口分为X2用户平面和X2控制平面，X2接口的用户平面提供基站之间的用户数据传输功能。通过X2接口相关过程，基站间可以交互各自管理的小区相关信息(Served CellInformation)。现有协议中基于X2接***互的Served Cell Information中与MBMS相关的信息只有MBSFN Subframe Info(MBSFN子帧信息)和MBMS Service Area Identity List(MBMS服务区域标识列表)。本申请实施例优选的，可通过扩展X2接***互的Served Cell Information，来携带服务小区归属的MBSFN area信息。表1示出了一种扩展后的Served Cell Information格式。
表1
Figure PCTCN2014089680-appb-000001
Figure PCTCN2014089680-appb-000002
表1中，与MBMS相关的MBSFN Subframe Info信息单元和MBMS Service Area Identity List信息单元为现有的信息单元，MBSFN area ID信息单元为本申请实施例增加的信息单元，用来承载终端当前的服务小区归属的MBSFN area信息。
需要说明的是，表1仅为一种示例，并不构成对本申请的限制。另外，基站间也可以通过新定义的消息来交互各自服务小区归属的MBSFN area信息，或者在现有基于X2接***互的消息中增加新的信息单元来承载服务小区归属的MBSFN area信息。
上述步骤202中，基站发送的所述邻小区的MBSFN area信息可以包括以下信息中的一种或多种：
所有邻小区标识，以及所述所有邻小区标识各自归属的MBSFN区域标识；
所有邻小区标识，以及所述所有邻小区标识中的每个邻小区标识对应的指示信息，所述指示信息用于指示邻小区是否与所述当前服务小区归属相同的MBSFN区域；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识，以及所述小区标识归属的MBSFN区域标识；
所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识；
所有邻小区中与所述当前服务小区归属于相同MBSFN区域的邻小区的小区标识。
上述步骤202中，优选的，基站可以根据终端当前服务小区的邻小区以及接收到的MBSFN area信息，判断该终端当前服务小区的邻小区归属的MBSFN area与该终端当前服务小区归属的MBSFN area不同时，才将该终端当前服务小区的邻小区的MBSFN area信息发送给该终端。如果该终端当前服务小区的邻小区归属的MBSFN area与该终端当前服务小区归属的MBSFN area相同，则可以不用向该终端发送该终端当前服务小区的邻小区的MBSFN area信息。采用这种方式可以节省空口的信令开销。
上述步骤202中，优选的，在基站将终端当前服务小区的邻小区的MBSFN area信息发送给该终端之前，可先判断所述终端是否对组通信感兴趣或正在进行组通信业务。只有在判断终端对组通信业务感兴趣或正在进行组通信业务的情况下，才将该终端当前服务小区的邻小区的MBSFN area信息发送给该终端。其中，基站可根据终端上报的MBMS interest信息来判断终端是否对组通信业务感兴趣或正在进行组通信业务，比如，如果有终端上报对当前服务小区的频点上的MBMS业务感兴趣，则基站可以判断该终端对组通信业务感兴趣。基站也可以通过counting(计数)结果来判断终端是否对组通信业务感兴趣或正在进行组通信业务，比如，如果基站针对某个MBMS业务counting结果不为0，则可以判断有终端对该MBMS业务感兴趣或者正在接收。
优选的，若基站判断终端对组通信业务感兴趣或正在进行组通信业务，则可以通过专用信令(该专用信令中携带该终端前服务小区的邻小区的MBSFN area信息)，将终端当前服务小区的邻小区的MBSFN area信息发送给该终端。所用的专用信令可以是RRC(Radio Resource Control，无线资源控制)信令、MAC(Media Access Control，媒体访问控制)信令或者L1信令。
上述步骤202中，优选的，基站也可以在将终端当前服务小区的邻小区的MBSFN area信息发送给该终端之前，判断当前服务小区内是否有对组通信业务感兴趣或正在进行组通信业务的终端，若判断有，则通过在所述当前服务小区广播终端当前服务小区的邻小区的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。具体实施时，为了广播该终端当前服务小区的邻小区的MBSFN area信息，可以引入新定义的SIB(System Information Block，***信息块)或者修改现有的SIB，以携带该MBSFN area信息。
应当指出的是，上述步骤202的第二种和第三种优选的实施方式，可以分别与上述步骤202的第一种优选的实施方式配合实施。具体的，如果步骤202的第一种优选的实施方式与第二种优选的实施方式配合实施，那么，在所述终端对组通信感兴趣或正在进行组通信业务，且该终端当前服务小区的邻小区归属的MBSFN area与该终端当前服务小区归属的MBSFN area不同时，才将该终端当前服务小区的邻小区的MBSFN area信息发送给该终端。至于先对第一种优选的实施方式的条件进行判断，还是先对第二种优选的实施方式的条件进行判断，本申请不作限定。如果步骤202的第一种优选的实施方式与第三种优选的实施方式配合实施，那么，在当前服务小区内有对组通信业务感兴趣或正在进行组通信业务的终端，且该终端当前服务小区的邻小区归属的MBSFN area与该终端当前服务小区归属的MBSFN area不同时，才将该终端当前服务小区的邻小区的MBSFN area信息发送给该终端。至于先对第一种优选的实施方式的条件进行判断，还是先对第三种优选的实施方式的条件进行判断，本申请不作限定。
通过以上流程可以看出，通过基站间交互各自服务小区归属的MBSFN区域信息，并由基站将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，从而使终端可以在小区切换或重选前获知当前服务小区的邻小区的MBSFN区域信息，为提前在当前服务小区建立单播或者提前在目标服务小区建立单播或MBMS业务承载提供了保证，进而可以降低终端在小区间移动时组通信业务的中断时延，保证组通信业务的连续性。
终端接收到基站发送的该终端当前服务小区的邻小区的MBSFN area信息后，可进一步进行相应处理。
参见图3，为本申请实施例提供的组通信信息通知过程中终端侧的处理流程示意图，如图所示，该流程可包括：
步骤301：终端接收基站发送的所述终端当前服务小区的邻小区的MBSFN area信息。其中，终端可采用广播方式或专用信令方式，接收基站发送的该终端当前服务小区的邻小区的MBSFN area信息，具体实现方式可同前所述，在此不再详述。所述当前服务小区的邻小区的MBSFN area信息的具体内容可同前所述，在此不再详述。
步骤302：所述终端根据接收到的MBSFN area信息，确定所述终端的目标服务小区与所述当前服务小区是否归属于同一MBSFN area。
在上述步骤301中，终端判断目标服务小区和当前服务小区是否属于同一个MBSFN area的触发条件可以有多种。下面举例说明本申请实施例所采用的几种触发条件：
触发条件1：当终端进入该终端当前服务小区时，即开始判断该目标服务小区与该当前服务小区是否属于同一MBSFN area。该触发条件下，所述目标服务小区为该终端当前服务小区的所有邻小区。
触发条件2：当终端当前服务小区的信号强度小于邻小区的信号强度时，开始判断该目标服务小区与该当前服务小区是否属于同一MBSFN area。该触发条件下，所述目标服务小区为满足小区切换条件或小区重选条件的所有邻小区，或者为满足小区切换条件或小区重选条件的所有邻小区中信号质量按照从强到弱排序后的前N(N≥1)个邻小区。其中，N的取值可根据实际情况和需要来设定，比如为了减少终端存储的数据量，可以取N＝1。
触发条件3：当终端当前服务小区的信号低于门限1或者邻小区信号质量高于门限2时，判断该目标服务小区与该当前服务小区是否属于同一MBSFN area。该触发条件下，所述目标服务小区为满足小区切换条件或小区重选条件的所有邻小区，或者为满足小区切换条件或小区重选条件的所有邻小区中信号质量按照从强到弱排序后的前N(N≥1)个邻小区。其中，门限1和门限2可由***设定，并通过网络侧设备(如基站)配置到终端上；N的取值可根据实际情况和需要来设定，比如为了减少终端存储的数据量，可以取N＝1。
采用上述触发条件的方式来启动终端的所述判断操作，可以减少终端上的处理开销。比如，根据上述触发条件2或触发条件3可以看出，只有在终端需要切换或重选到目标服 务小区时，才进行上述判断。
上述几种触发条件仅为示例，并不构成对本申请的限制。比如，终端也可以在接收到基站发送的该终端当前服务小区的邻小区的MBSFN area信息后即可进行判断。
在上述步骤302中，若终端判断该终端的目标服务小区与当前服务小区归属于不同的MBSFN area，则该终端可进一步的获取该目标服务小区的***信息，根据该目标服务小区的***信息获取在该目标服务小区建立单播承载或MBMS承载所需的信息，以便根据获取到的该信息(即在该目标服务小区建立单播承载或MBMS承载所需的信息)预先在该当前服务小区或者目标服务小区建立承载，或在该终端发生到该目标服务小区的切换或重选时，根据该信息尽快进行MBMS业务，以保证组通信业务的连续性。
具体实施时，终端可获取目标服务小区的***信息，获取该***信息中的MCCH(Multicast Channel Control Channel，多播控制信道)信息，并判断该目标服务小区归属的MBSFN area内是否有该终端感兴趣或正在进行的组通信业务(判断方式可同前所述)。若有，则保存该目标服务小区的***信息和MCCH信息；否则，在该当前服务小区建立单播承载，或者根据该目标服务小区的***信息在该目标服务小区建立单播承载。或者，终端先在当前服务小区建立单播承载，然后通过单播方式切换到目标服务小区。进一步的，切换到目标服务小区后，终端可根据目标服务小区的***信息和MCCH信息，判断目标服务小区是否通过MBMS方式提供其感兴趣的组通信业务，如果有，则可以开始在目标服务小区使用MBMS接收，并释放和目标服务小区的单播承载。
通过以上流程可以看出，通过基站间交互各自服务小区归属的MBSFN区域信息，并由基站将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，从而使终端可以在小区切换或重选前获知当前服务小区的邻小区的MBSFN区域信息，为提前在当前服务小区建立单播承载或者提前在目标服务小区建立单播或MBMS业务承载提供了保证，进而可以降低终端在小区间移动时组通信业务的中断时延，保证组通信业务的连续性。
为了更清楚的对本申请实施例提供的上述流程进行说明，下面以两个具体应用场景为例进行描述。
参见图4，为本申请实施例提供的一个应用场景下的组通信信息的通知过程。该场景下，终端1当前的服务基站为基站1，基站2与基站1之间可通过X2接口进行信息交互。如图所示，该流程可包括：
步骤401：基站1和基站2之间通过X2接口相关过程，比如X2 SETUP REQUEST、X2 SETUP RESPONSE或ENB CONFIGURATION UPDATE，交互各自服务小区归属的MBSFN area信息。
步骤402：基站1在终端服务小区内广播该服务小区的邻小区相关的MBSFN area信息。具体的，基站可通过引入新的SIB，在终端服务小区内广播该服务小区的邻小区相关 的MBSFN area信息。服务小区的邻小区的MBSFN area信息同前所述，在此不再详述。
优选的，基站可以只在有邻小区归属的MBSFN area和当前服务小区归属的MBSFN area不同时，才通过广播方式通知终端邻小区的MBSFN area信息。
步骤403：终端判断目标服务小区与当前服务小区是否属于同一MBSFN area。该步骤的触发条件有多种，具体同前所述，在此不再详述。
该步骤中，如果终端判断目标服务小区和当前服务小区均属于同一个MBSFN area，则可以不执行任何额外操作，进一步的，如果该终端当前正在进行组通信业务，则可继续使用MBMS方式接收组通信数据。如果终端判断目标服务小区和当前服务小区属于不同的MBSFN area，则可选的，可以进一步执行步骤404。
步骤404：终端预先读取目标服务小区***信息和/或MCCH信息。
该步骤中，终端预先读取目标服务小区的MIB(Master Information Block，主信息块)和/或SIB，如果从目标服务小区可以读取到SIB13，则需要进一步读取目标服务小区的MCCH，并判断目标服务小区归属的MBSFN area内是否有该终端感兴趣或正在进行的组通信业务。进一步的，可根据判断结果进行如下处理：
如果有终端感兴趣或正在进行的组通信业务，则该终端在维持当前MBMS接收的同时，保存目标服务小区的MIB、SIB、MCCH信息中的一种或多种，以便切换或重选到目标服务小区时可以尽快进行MBMS接收，保证组通信的业务连续性；
如果没有终端感兴趣或正在进行的组通信业务，则该终端在维持当前MBMS接收的同时，提前在当前服务小区建立单播承载，或者根据目标服务小区的***信息在目标服务小区建立单播承载，以保证该终端发生小区切换或重选时，业务中断时延能够满足组通信的要求，保证组通信业务的连续性。
其中，终端可根据TMGI(Temporary Mobile Group Identity，临时移动组标识)判断目标服务小区归属的MBSFN area内是否有该终端感兴趣或正在进行的组通信业务。
优选的，在步骤401和402之间还可包括以下步骤：基站判断当前服务小区内是否有对组通信业务感兴趣或正在进行组通信业务的终端。相应的，如果判断当前服务小区内有对组通信业务感兴趣或正在进行组通信业务的终端，则执行步骤402，否则可以结束本流程。
参见图5，为本申请实施例提供的另一个应用场景下的组通信信息的通知过程。该场景下，终端1当前的服务基站为基站1，基站2与基站1之间可通过X2接口进行信息交互。如图所示，该流程可包括：
步骤501：基站间交互各自的服务小区归属的MBSFN area信息。在该场景下，基站1和基站2之间可通过X2接口相关过程，比如X2 SETUP REQUEST、X2 SETUP RESPONSE或ENB CONFIGURATION UPDATE，交互各自服务小区归属的MBSFN area信息。
步骤502：基站判断终端是否对组通信业务感兴趣或者正在进行组通信业务，如果判断该终端对组通信业务感兴趣或者正在进行组通信业务，则可以进一步执行步骤503，否则可以结束本流程。具体实施时，基站可以根据终端上报的MBMS interest信息或者counting结果，判断该终端是否对组通信业务感兴趣或者正在进行组通信业务。
步骤503：基站在终端服务小区内通过专用信令，向该终端通知该服务小区的邻小区的MBSFN area信息。具体实施时，基站所使用的所述专用信令可以是RRC信令、MAC信令或者L1信令。服务小区的邻小区的MBSFN area信息所包含的内容可同前所述，在此不再详述。
优选的，基站可以只在有邻小区归属的MBSFN area和当前服务小区归属的MBSFN area不同时，才通过专用信令通知终端邻小区的MBSFN area信息。
步骤504：终端判断目标服务小区与当前服务小区是否属于同一MBSFN area。该步骤的触发条件有多种，具体同前所述，在此不再详述。
该步骤中，如果终端判断目标服务小区和当前服务小区均属于同一个MBSFN area，则可以不执行任何额外操作，进一步的，如果该终端当前正在进行组通信业务，则可继续使用MBMS方式接收组通信数据。如果终端判断目标服务小区和当前服务小区属于不同的MBSFN area，则可选的，可以进一步执行步骤505。
步骤505：终端预先读取目标服务小区***信息和/或MCCH信息。该步骤的具体实现可与图4所示流程中的步骤404相同，在此不再详述。
基于相同的技术构思，本申请实施例还提供了一种基站。
参见图6A，为本申请实施例提供的基站的结构示意图。该基站可包括：
第一接口模块601，用于与其它基站交互各自服务小区归属的MBSFN区域信息；
第二接口模块602，用于根据终端当前服务小区的邻小区以及所述第一接口模块接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，所述终端为所述当前服务小区服务的终端。
具体的，第一接口模块601可通过交互X2接口建立请求消息，交互各自服务小区归属的MBSFN区域信息；或者，通交互X2接口建立响应消息，交互各自服务小区归属的MBSFN区域信息；或者，通过基站配置更新消息，交互各自服务小区归属的MBSFN区域信息。
进一步的，如图6B所述，还可包括第一处理模块603。第一处理模块603，用于根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，判断所述终端当前服务小区的邻小区归属的MBSFN区域与所述终端当前服务小区归属的MBSFN区域是否相同。相应的，第二接口模块602可在所述第一处理模块判断为不同时，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
进一步的，如图6C所示，还可包括第二处理模块604；第二处理模块604，用于在第一接口模块601接收到MBSFN区域信息后判断所述终端是否对组通信业务感兴趣或正在进行组通信业务，所述终端为所述当前服务小区服务的终端；第二接口模块602具体用于：若第二处理模块604判断所述终端对组通信业务感兴趣或正在进行组通信业务，则通过专用信令将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
具体的，所述专用信令包括：RRC信令、MAC信令或L1信令。
如图6D所示，还可包括第三处理模块605；第三处理模块605，用于在第一接口模块601接收到MBSFN区域信息后判断所述当前服务小区内是否有对组通信业务感兴趣或正在进行组通信业务的终端；第二接口模块602具体用于：若所述第三处理模块判断所述当前服务小区内有对组通信业务感兴趣或正在进行组通信业务的终端，则通过在所述当前服务小区广播所述终端当前服务小区的邻小区的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
具体的，所述邻小区的MBSFN区域信息所包括的内容同前所述，在此不再赘述。
基于相同的技术构思，本申请实施例还提供了一种基站。
参见图7，为本申请实施例提供的基站的结构示意图。该基站可包括处理器700、收发机710和存储器720。
处理器700，用于读取存储器720中的程序，执行下列过程：与其它基站交互各自服务小区归属的MBSFN区域信息；根据终端当前服务小区的邻小区以及所述第一接口模块接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息通过收发机710发送给所述终端，所述终端为所述当前服务小区服务的终端；
收发机710，用于在处理器700的控制下接收和发送数据。
其中，在图7中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器700代表的一个或多个处理器和存储器720代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机710可以是多个元件，即包括发送机和收发机，提供用于在传输介质上与各种其他装置通信的单元。处理器700负责管理总线架构和通常的处理，存储器720可以存储处理器700在执行操作时所使用的数据。
基于相同的技术构思，本申请实施例还提供了一种终端。
参见图8，为本申请实施例提供的终端的结构示意图。该终端可包括接口模块801、确定模块802，还可包括获取模块803，还可包括承载处理模块804：
接口模块801，用于接收基站发送的所述终端当前服务小区的邻小区的多播组播单频网络MBSFN区域信息；
确定模块802，用于根据所述接口模块接收到的MBSFN区域信息，确定所述终端的目标服务小区与所述当前服务小区是否归属于同一MBSFN区域。
具体的，确定模块802可当所述终端进入所述当前服务小区时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为所述当前服务小区的所有邻小区；或者，当所述终端当前服务小区的信号强度小于邻小区的信号强度时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1；或者，当所述终端当前服务小区的信号低于第一门限或者邻小区信号质量高于第二门限时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1。
进一步的，获取模块803用于在确定模块802判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域时，获取所述目标服务小区的***信息，根据所述目标服务小区的***信息获取在所述目标服务小区建立单播承载或MBMS承载所需的信息。
进一步的，获取模块803可获取所述目标服务小区的***信息，获取所述***信息中的多播控制信道信息，并判断所述目标服务小区归属的MBSFN区域内是否有所述终端感兴趣或正在进行的组通信业务；若有，则保存所述目标服务小区的***信息和多播控制信道信息，所述***信息和多播控制信道信息用于在所述终端切换或重选到所述目标服务小区时进行MBMS接收；若无，则指示所述承载处理模块在所述当前服务小区建立单播承载，或者指示所述承载处理模块根据所述目标服务小区的***信息在所述目标服务小区建立单播承载。
进一步的，获取模块803还可在所述终端切换到目标服务小区后，根据所述目标服务小区的***信息和多播控制信道信息，判断目标服务小区是否通过MBMS方式提供所述终端感兴趣的组通信业务，如果有，则通过所述承载处理模块在所述目标服务小区使用MBMS接收组通信业务，并释放所述目标服务小区的单播承载。
进一步的，承载处理模块804可在判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域时，在所述当前服务小区建立单播承载，并通过单播方式切换到目标服务小区。
具体的，接口模块801可通过在所述终端当前服务小区内接收广播消息，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息；或者，通过接收专用信令，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息。
所述邻小区的MBSFN区域信息的内容可同前所述，在此不再赘述。
基于相同的技术构思，本申请实施例还提供了一种终端。
参见图9，为本申请实施例提供的终端的结构示意图。该终端可包括处理器900、收发机910和存储器920。
处理器900，用于读取存储器920中的程序，执行下列过程：通过收发器910接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息；根据所述接口模块接收到的MBSFN区域信息，确定所述终端的目标服务小区与所述当前服务小区是否归属于同一MBSFN区域；
收发机910，用于在处理器900的控制下接收和发送数据。
其中，在图9中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器900代表的一个或多个处理器和存储器920代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机910可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口930还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器900负责管理总线架构和通常的处理，存储器920可以存储处理器900在执行操作时所使用的数据。
综上所述，本申请实施例给出了一种基于现有LTE***网络架构，减小组通信数据传输时延的方法。通过该方法可以实现在不改变现有网络架构的情况下，降低终端移动时组通信业务的中断时间，从而满足组通信对业务连续性的要求。
本申请是参照根据本申请实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (30)

  1. 一种组通信信息通知方法，其特征在于，包括：
    基站间交互各自服务小区归属的多播组播单频网络MBSFN区域信息；
    基站根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，所述终端为所述当前服务小区服务的终端。
  2. 如权利要求1所述的方法，其特征在于，所述基站间交互各自服务小区归属的MBSFN区域信息，包括：
    基站间通过交互X2接口建立请求消息，交互各自服务小区归属的MBSFN区域信息；或者
    基站间通过交互X2接口建立响应消息，交互各自服务小区归属的MBSFN区域信息；或者
    基站间通过基站配置更新消息，交互各自服务小区归属的MBSFN区域信息。
  3. 如权利要求1所述的方法，其特征在于，基站根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，包括：
    所述基站根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，判断所述终端当前服务小区的邻小区归属的MBSFN区域与所述终端当前服务小区归属的MBSFN区域不同时，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
  4. 如权利要求1或3所述的方法，其特征在于，基站根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，所述终端为所述当前服务小区服务的终端，包括：
    基站接收到MBSFN区域信息后判断所述终端是否对组通信业务感兴趣或正在进行组通信业务，所述终端为所述当前服务小区服务的终端；
    若所述基站判断所述终端对组通信业务感兴趣或正在进行组通信业务，则通过专用信令将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
  5. 如权利要求4所述的方法，其特征在于，所述专用信令包括：无线资源控制RRC信令、媒体访问控制MAC信令或L1信令。
  6. 如权利要求1或3所述的方法，其特征在于，基站根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，所述终端为所述当前服务小区服务的终端，包括：
    基站接收到MBSFN区域信息后判断所述当前服务小区内是否有对组通信业务感兴趣或正在进行组通信业务的终端；
    若所述基站判断所述当前服务小区内有对组通信业务感兴趣或正在进行组通信业务的终端，则通过在所述当前服务小区广播所述终端当前服务小区的邻小区的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
  7. 如权利要求1-6中任一项所述的方法，其特征在于，所述邻小区的MBSFN区域信息，包括以下信息之一或任意组合：
    所有邻小区标识，以及所述所有邻小区标识各自归属的MBSFN区域标识；
    所有邻小区标识，以及所述所有邻小区标识中的每个邻小区标识对应的指示信息，所述指示信息用于指示邻小区是否与所述当前服务小区归属相同的MBSFN区域；
    所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识，以及所述小区标识归属的MBSFN区域标识；
    所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识；
    所有邻小区中与所述当前服务小区归属于相同MBSFN区域的邻小区的小区标识。
  8. 一种组通信信息通知方法，其特征在于，包括：
    终端接收基站发送的所述终端当前服务小区的邻小区的多播组播单频网络MBSFN区域信息；
    所述终端根据接收到的MBSFN区域信息，确定所述终端的目标服务小区与所述当前服务小区是否归属于同一MBSFN区域。
  9. 如权利要求8所述的方法，其特征在于，所述判断所述终端的目标服务小区与所述当前服务小区是否属于同一MBSFN区域，包括：
    当所述终端进入所述当前服务小区时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为所述当前服务小区的所有邻小区；或者
    当所述终端当前服务小区的信号强度小于邻小区的信号强度时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1；或者
    当所述终端当前服务小区的信号低于第一门限或者邻小区信号质量高于第二门限时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1。
  10. 如权利要求8所述的方法，其特征在于，若所述终端判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域，则还包括：
    所述终端获取所述目标服务小区的***信息，根据所述目标服务小区的***信息获取在所述目标服务小区建立单播承载或多媒体广播组播MBMS承载所需的信息。
  11. 如权利要求10所述的方法，其特征在于，所述终端获取所述目标服务小区的***信息，根据所述目标服务小区的***信息获取在所述目标服务小区建立单播承载或MBMS承载所需的信息，包括：
    所述终端获取所述目标服务小区的***信息，获取所述***信息中的多播控制信道MCCH信息，并判断所述目标服务小区归属的MBSFN区域内是否有所述终端感兴趣或正在进行的组通信业务；
    若有，则保存所述目标服务小区的***信息和MCCH信息，所述***信息和MCCH信息用于在所述终端切换或重选到所述目标服务小区时进行MBMS接收；
    若无，则在所述当前服务小区建立单播承载，或者根据所述目标服务小区的***信息在所述目标服务小区建立单播承载。
  12. 如权利要求8所述的方法，其特征在于，若所述终端判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域，则还包括：
    所述终端在所述当前服务小区建立单播承载，并通过单播方式切换到目标服务小区。
  13. 如权利要求11或12所述的方法，其特征在于，切换到目标服务小区后还包括：
    所述终端根据所述目标服务小区的***信息和MCCH信息，判断目标服务小区是否通过MBMS方式提供所述终端感兴趣的组通信业务，如果有，则在所述目标服务小区使用MBMS接收组通信业务，并释放所述目标服务小区的单播承载。
  14. 如权利要求8所述的方法，其特征在于，所述终端接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息，包括：
    所述终端通过在所述终端当前服务小区内接收广播消息，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息；或者
    所述终端通过接收专用信令，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息。
  15. 如权利要求8-14中任一项所述的方法，其特征在于，所述邻小区的MBSFN区域信息，包括以下信息之一或任意组合：
    所有邻小区标识，以及所述所有邻小区标识各自归属的MBSFN区域标识；
    所有邻小区标识，以及所述所有邻小区标识中的每个邻小区标识对应的指示信息，所述指示信息用于指示邻小区是否与所述当前服务小区归属相同的MBSFN区域；
    所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识，以及所述小区标识归属的MBSFN区域标识；
    所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识；
    所有邻小区中与所述当前服务小区归属于相同MBSFN区域的邻小区的小区标识。
  16. 一种基站，其特征在于，包括：
    第一接口模块，用于与其它基站交互各自服务小区归属的多播组播单频网络MBSFN区域信息；
    第二接口模块，用于根据终端当前服务小区的邻小区以及所述第一接口模块接收到的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端，所述终端为所述当前服务小区服务的终端。
  17. 如权利要求16所述的基站，其特征在于，所述第一接口模块具体用于，通过交互X2接口建立请求消息，交互各自服务小区归属的MBSFN区域信息；或者，通过交互X2接口建立响应消息，交互各自服务小区归属的MBSFN区域信息；或者，通过基站配置更新消息，交互各自服务小区归属的MBSFN区域信息。
  18. 如权利要求16所述的基站，其特征在于，还包括第一处理模块；
    所述第一处理模块，用于根据终端当前服务小区的邻小区以及接收到的MBSFN区域信息，判断所述终端当前服务小区的邻小区归属的MBSFN区域与所述终端当前服务小区归属的MBSFN区域是否相同；
    所述第二接口模块具体用于，在所述第一处理模块判断为不同时，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
  19. 如权利要求16或18所述的基站，其特征在于，还包括第二处理模块；
    所述第二处理模块，用于在所述第一接口模块接收到MBSFN区域信息后判断所述终端是否对组通信业务感兴趣或正在进行组通信业务，所述终端为所述当前服务小区服务的终端；
    所述第二接口模块具体用于，若所述第二处理模块判断所述终端对组通信业务感兴趣或正在进行组通信业务，则通过专用信令将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
  20. 如权利要求19所述的基站，其特征在于，所述专用信令包括：无线资源控制RRC信令、媒体访问控制MAC信令或L1信令。
  21. 如权利要求16或18所述的基站，其特征在于，还包括第三处理模块；
    所述第三处理模块，用于在所述第一接口模块接收到MBSFN区域信息后判断所述当前服务小区内是否有对组通信业务感兴趣或正在进行组通信业务的终端；
    所述第二接口模块具体用于，若所述第三处理模块判断所述当前服务小区内有对组通信业务感兴趣或正在进行组通信业务的终端，则通过在所述当前服务小区广播所述终端当前服务小区的邻小区的MBSFN区域信息，将终端当前服务小区的邻小区的MBSFN区域信息发送给所述终端。
  22. 如权利要求16-21中任一项所述的基站，其特征在于，所述邻小区的MBSFN区域信息，包括以下信息之一或任意组合：
    所有邻小区标识，以及所述所有邻小区标识各自归属的MBSFN区域标识；
    所有邻小区标识，以及所述所有邻小区标识中的每个邻小区标识对应的指示信息，所述指示信息用于指示邻小区是否与所述当前服务小区归属相同的MBSFN区域；
    所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识，以及所述小区标识归属的MBSFN区域标识；
    所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识；
    所有邻小区中与所述当前服务小区归属于相同MBSFN区域的邻小区的小区标识。
  23. 一种终端，其特征在于，包括：
    接口模块，用于接收基站发送的所述终端当前服务小区的邻小区的多播组播单频网络MBSFN区域信息；
    确定模块，用于根据所述接口模块接收到的MBSFN区域信息，确定所述终端的目标服务小区与所述当前服务小区是否归属于同一MBSFN区域。
  24. 如权利要求23所述的终端，其特征在于，所述确定模块具体用于，当所述终端进入所述当前服务小区时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为所述当前服务小区的所有邻小区；或者
    当所述终端当前服务小区的信号强度小于邻小区的信号强度时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1；或者
    当所述终端当前服务小区的信号低于第一门限或者邻小区信号质量高于第二门限时，判断所述目标服务小区与所述当前服务小区是否属于同一MBSFN区域，所述目标服务小区为满足小区切换或重选条件的所有邻小区，或者为满足小区切换或重选条件的所有邻小区中信号质量按照从强到弱排序后的前N个邻小区，N≥1。
  25. 如权利要求23所述的终端，其特征在于，还包括获取模块；
    所述获取模块，用于在所述确定模块判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域时，获取所述目标服务小区的***信息，根据所述目标服务小区的***信息获取在所述目标服务小区建立单播承载或多媒体广播组播MBMS承载所需的信息。
  26. 如权利要求25所述的终端，其特征在于，还包括承载处理模块；
    所述获取模块具体用于，获取所述目标服务小区的***信息，获取所述***信息中的多播控制信道MCCH信息，并判断所述目标服务小区归属的MBSFN区域内是否有所述终 端感兴趣或正在进行的组通信业务；若有，则保存所述目标服务小区的***信息和MCCH信息，所述***信息和MCCH信息用于在所述终端切换或重选到所述目标服务小区时进行MBMS接收；若无，则指示所述承载处理模块在所述当前服务小区建立单播承载，或者指示所述承载处理模块根据所述目标服务小区的***信息在所述目标服务小区建立单播承载。
  27. 如权利要求23所述的终端，其特征在于，还包括承载处理模块，用于在判断所述终端的目标服务小区与所述当前服务小区归属于不同MBSFN区域时，在所述当前服务小区建立单播承载，并通过单播方式切换到目标服务小区。
  28. 如权利要求26或27所述的终端，其特征在于，所述获取模块还用于，在所述终端切换到目标服务小区后，根据所述目标服务小区的***信息和MCCH信息，判断目标服务小区是否通过MBMS方式提供所述终端感兴趣的组通信业务，如果有，则通过所述承载处理模块在所述目标服务小区使用MBMS接收组通信业务，并释放所述目标服务小区的单播承载。
  29. 如权利要求23所述的终端，其特征在于，所述接口模块具体用于，通过在所述终端当前服务小区内接收广播消息，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息；或者，通过接收专用信令，接收基站发送的所述终端当前服务小区的邻小区的MBSFN区域信息。
  30. 如权利要求23-29中任一项所述的终端，其特征在于，所述邻小区的MBSFN区域信息，包括以下信息之一或任意组合：
    所有邻小区标识，以及所述所有邻小区标识各自归属的MBSFN区域标识；
    所有邻小区标识，以及所述所有邻小区标识中的每个邻小区标识对应的指示信息，所述指示信息用于指示邻小区是否与所述当前服务小区归属相同的MBSFN区域；
    所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识，以及所述小区标识归属的MBSFN区域标识；
    所有邻小区中与所述当前服务小区归属于不同MBSFN区域的邻小区的小区标识；
    所有邻小区中与所述当前服务小区归属于相同MBSFN区域的邻小区的小区标识。
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