WO2017166900A1 - Procédés de réception de service de multidiffusion/diffusion multimédia, et terminal, station de base et support de stockage - Google Patents

Procédés de réception de service de multidiffusion/diffusion multimédia, et terminal, station de base et support de stockage Download PDF

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Publication number
WO2017166900A1
WO2017166900A1 PCT/CN2017/070913 CN2017070913W WO2017166900A1 WO 2017166900 A1 WO2017166900 A1 WO 2017166900A1 CN 2017070913 W CN2017070913 W CN 2017070913W WO 2017166900 A1 WO2017166900 A1 WO 2017166900A1
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Prior art keywords
mbms
control information
area
service
neighboring
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PCT/CN2017/070913
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English (en)
Chinese (zh)
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许辉
马子江
吕永
卢忱
王亚英
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中兴通讯股份有限公司
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Publication of WO2017166900A1 publication Critical patent/WO2017166900A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

Definitions

  • the present invention relates to the field of communications, and in particular to a method for receiving a multimedia broadcast multicast service, a terminal, a base station, and a storage medium.
  • the technologies to improve vehicle safety are mainly divided into passive safety technology and active safety technology.
  • Passive safety technology is used to protect people inside and outside the vehicle after accidents.
  • Active safety technology is used to prevent and reduce accidents in vehicles and avoid injuries.
  • Active safety technology is the focus of modern vehicle safety technology development. And trends.
  • the communication-based collision warning system realizes real-time information interaction between the vehicle, the vehicle and the roadside infrastructure by using advanced wireless communication technology and a new generation of information processing technology, and informs each other of the current state (including the position and speed of the vehicle). Acceleration, driving route) and learned road environment information, collaboratively aware of road hazard conditions, timely providing a variety of collision warning information to prevent road traffic safety accidents, and become a new way for countries to solve road traffic safety problems. .
  • V2X Vehicle to Everything
  • V2X Provides vehicle information through sensors, vehicle terminals and electronic tags mounted on vehicles.
  • Vehicles and vehicles (V2V) and vehicles are used by various communication technologies.
  • V2P Vehicle to Pedestrian
  • V2I Vehicle to Infrastructure
  • LTE Long Time Evolution
  • the roadside communication unit RSU (Road Side Unit) can receive the vehicle request, ensure the vehicle accesses the Internet, and has the function of a gateway; in addition, it also has the functions of data calculation, storage and forwarding.
  • DSRC Dedicated Short Range Communication
  • LTE Long Term Evolution
  • 802.11P is responsible for physical layer
  • MAC Medium Access Control technology
  • 1609 is responsible for the upper specification.
  • LTE-based V2X technology has just begun to be discussed and there are no standards.
  • the LTE V2X technology discussed by the 3GPP in the related art includes: the RSU can be implemented by a stationary UE or an eNB, and the V2V/V2I/V2P may be implemented by using a PC5 interface or a Uu interface, where the PC5 interface refers to an air interface of the device to the device D2D, and the Uu interface Refers to the air interface of the UE to the eNB.
  • FIG. 1 is an architecture diagram of transmitting V2X services through the Uu interface in the related art.
  • the system architecture for transmitting V2X services through the Uu interface is shown in FIG. 1 , where E-UTRAN is in the LTE network. Base station.
  • the 3rd Generation Partnership Project (3GPP) proposes a Multimedia Broadcast Multicast Service (MBMS), which is a data source.
  • MBMS Multimedia Broadcast Multicast Service
  • the technology of transmitting data by multiple target terminals realizes sharing of resources of the network (including the core network and the access network), and improves the utilization of network resources (especially air interface resources).
  • 3GPP proposes a research topic of single-cell MBMS in LTE-A of R13, in which a single-cell MBMS service is transmitted on a physical downlink shared channel PDSCH.
  • Adoption of MBMS services in 3GPP networks The Temporary Mobile Group Identity (TMGI) is allocated by the Broadcast Multicast-Service Centre (BM-SC).
  • BM-SC Broadcast Multicast-Service Centre
  • the application server notifies the UE of relevant service description information through application layer signaling: such as TMGI, service start time, and the like.
  • SC-PTM Single Cell-Point To Multipoint
  • PDSCH Physical Downlink Shared Channel
  • MBSFN Multimedia Broadcast Single Frequency Network
  • the access network is determined by the Multicell/Multicast Coordination Entity (MCE).
  • MBSFN or SC-PTM sends broadcast services on the air interface.
  • the traffic safety service generally targets multiple vehicles in a certain area.
  • the downlink transmission using broadcast is an efficient means. According to the simulation evaluation, it is difficult to meet the capacity requirements of the V2X service by using unicast transmission.
  • the effective area of a specific V2X service is generally small, and the MBSFN area to be divided when transmitting in the MBSFN mode is generally small, such as 7 cells or smaller.
  • High-speed movement of vehicles that transmit V2X services may change the MBSFN area or cell frequently.
  • the vehicle (or UE) enters the new MBSFN area, it needs to read the SIB13, the Multicast Control Channel (MCCH), and the Multicast Channel (MCH) scheduling information (MCH Scheduling Information, For example, MSI), obtain the configuration information of the required V2X service, and then read the required V2X service.
  • FIG. 2 is a schematic diagram of the VMS system based on the MBMS in the related art, where each module or device passes the interface.
  • Information communication and interaction including: Uu, S1-MME, M3, S6a, M1, S-11, Sm, S1-u, SGimb, SGmb, Rx, SG, VC1, MB2-C (control plane), VMB2- U (user plane), each of the above interfaces is an interface type common to the field, and details are not described herein again.
  • the system architecture for transmitting V2X services using MBMS is shown in Figure 2.
  • the delay requirement is within 100ms.
  • 3GPP uses MBMS to carry broadcast V2X services.
  • the UE changes the broadcast area due to mobility, the existing MBMS Business receiving process cannot be guaranteed
  • the 100 ms delay requirement may cause the V2X service to fail to receive.
  • the embodiment of the invention provides a method for receiving a multimedia broadcast multicast service, a terminal, a base station, and a storage medium, so as to at least solve the problem that the delay of receiving the MBMS service when the UE moves in the related art is too large.
  • a method for receiving a multimedia broadcast multicast service including: acquiring MBMS control information of a MBMS area of a neighboring multimedia broadcast multicast service of a terminal camped cell; and according to the MBMS control information Receive MBMS services of adjacent MBMS areas.
  • the camped cell belongs to one or more MBMS areas, and/or the neighbor MBMS area includes one or more MBMS areas.
  • the MBMS area uses the multimedia broadcast single frequency network MBSFN mode and/or the single cell point-to-multipoint SC-PTM mode to send the MBMS service.
  • the camped cell is a cell that sends an MBMS service in a unicast mode.
  • the adjacent MBMS area is adjacent to one or more MBMS areas covered by the resident cell.
  • the MBMS control information of the neighboring MBMS area of the camped cell of the terminal includes at least one of: acquiring the MBMS control information from the system information block SIB of the camping cell; Obtaining the MBMS control information in an MBSFN area configuration message of the cell; obtaining the MBMS control information by using dedicated signaling.
  • the method further includes: reading the required MBMS service in the camping cell.
  • the MBMS service required for reading in the camping cell includes: reading at least one of the following parameter information of the neighboring MBMS area in the camping cell: multicast control channel MCCH information, multicast Information scheduling information MSI, single cell multicast control channel SC-MCCH information; reading required multicast traffic channel MTCH or single cell multicast traffic channel SC-MTCH service data according to the parameter information; wherein, the required The MBMS service is an MBMS service that the terminal is receiving or waiting to receive.
  • receiving the MBMS service of the neighboring MBMS area according to the MBMS control information includes: determining whether the MBMS service content or the SC-PTM service content of the adjacent MBMS area includes the required MBMS service; When yes, the required MBMS service is received according to the MBMS control information.
  • the method further includes: performing required MBMS services received in the adjacent MBMS area and required to be read in the resident cell The MBMS services are merged or discarded.
  • the MBMS control information of the neighboring MBMS area is obtained by at least one of the following manners: receiving control information of a neighboring MBMS area provided by the multi-cell/multicast cooperative entity MCE for the camping cell; Control information of a neighboring MBMS area acquired by the base station eNB of the camping cell and the eNB of the neighboring MBMS area through the X2 interface; and the eNB acquiring the neighboring MBMS area to the terminal by using radio resource control RRC signaling Control information of the transmitted adjacent MBMS area.
  • the camped cell is an edge cell serving the terminal between adjacent MBMS areas.
  • the MBMS control information includes at least one of the following: a system message block SIB13, an SIB15, an SIB20, and a multicast control channel MCCH information.
  • a method for receiving another multimedia broadcast multicast service including: acquiring an MBMS control message of a neighboring MBMS area of a cell under the control of a base station And transmitting, by the base station, the MBMS control information to the terminal, where the MBMS control information is used to provide configuration information for the terminal to receive the MBMS service of the neighboring MBMS area.
  • the MBMS control information of the neighboring MBMS area of the camping cell is acquired in at least one of the following: when receiving the request for requesting the MBMS control information of the neighboring MBMS area; When the MBMS region where the MBMS region is switched; when the MBMS control information of the neighboring MBMS region changes; when the MBMS control information of the neighboring MBMS region is periodically transmitted by the camping cell; When the MBMS control information of the MBMS area is indicated.
  • a terminal for receiving a multimedia broadcast multicast service including: an obtaining module configured to acquire MBMS control of a MBMS area of a neighboring multimedia broadcast multicast service of a terminal camped cell
  • the receiving module is configured to receive the MBMS service of the adjacent MBMS area according to the MBMS control information.
  • a base station including: an obtaining module, configured to acquire MBMS control information of a neighboring MBMS area of a cell under the control of the base station; and a sending module configured to be in a cell under the jurisdiction of the base station Sending the MBMS control information to the terminal, where the MBMS control information is used to provide configuration information for the terminal to receive the MBMS service of the MBMS area.
  • the acquiring module acquires MBMS control information of a neighboring MBMS area of a cell managed by the base station: when receiving a request for requesting MBMS control information of a neighboring MBMS area When the switching occurs in the MBMS area where the terminal is located; when the MBMS control information of the neighboring MBMS area changes; the MBMS control information of the neighboring MBMS area is periodically transmitted by the camping cell; When indicating an indication of receiving MBMS control information of the neighboring MBMS area.
  • a storage medium which is an embodiment of the present invention.
  • the provided computer storage medium stores a computer program for performing the above-described receiving method of the multimedia broadcast multicast service.
  • the technical solution of the embodiment of the present invention is to obtain MBMS control information of an MBMS area of a neighboring multimedia broadcast multicast service of a terminal camped cell, and receive an MBMS service of an adjacent MBMS area according to the MBMS control information, by using an adjacent MBMS area.
  • Receiving the MBMS service can avoid the extra delay of receiving the MBMS service when the UE moves to the adjacent MBMS area, and solves the problem that the delay of receiving the MBMS service when the UE moves in the related art is too large, thereby achieving the reduction of the MBMS service.
  • the effect of transmission delay is to obtain MBMS control information of an MBMS area of a neighboring multimedia broadcast multicast service of a terminal camped cell, and receive an MBMS service of an adjacent MBMS area according to the MBMS control information, by using an adjacent MBMS area.
  • FIG. 1 is a structural diagram of transmitting a V2X service through a Uu port in the related art
  • FIG. 2 is a schematic diagram of a VMS system based on MBMS in the related art
  • FIG. 3 is a flowchart of a method for receiving a multimedia broadcast multicast service according to an embodiment of the present invention
  • FIG. 4 is a flowchart of another method for receiving a multimedia broadcast multicast service according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a receiving apparatus for a multimedia broadcast multicast service according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of another apparatus for receiving a multimedia broadcast multicast service according to an embodiment of the present invention.
  • Figure 8 is a flow chart showing an example 2 according to the present invention.
  • Example 9 is a schematic flow chart of Example 3 according to the present invention.
  • Figure 10 is a flow chart showing an example 4 of the present invention.
  • FIG. 11 is a schematic diagram of a system architecture in accordance with an embodiment of the present invention.
  • FIG. 3 is a flowchart of a method for receiving a multimedia broadcast multicast service according to an embodiment of the present invention, as shown in FIG. The process includes the following steps:
  • Step S302 Obtain MBMS control information of an MBMS area of a neighboring multimedia broadcast multicast service of a terminal camped cell.
  • Step S304 receiving an MBMS service of an adjacent MBMS area according to the MBMS control information.
  • the MBMS control information of the MBMS area of the adjacent multimedia broadcast multicast service of the terminal camped cell is obtained; the MBMS service of the adjacent MBMS area is received according to the MBMS control information, and the MBMS service can be avoided by receiving the MBMS service in the adjacent MBMS area. Because the UE moves to the adjacent MBMS area, the additional delay of receiving the MBMS service is solved, which solves the problem that the delay of receiving the MBMS service when the UE moves is too large in the related art, thereby achieving the effect of reducing the transmission delay of the MBMS service.
  • the MBMS control information may be, but is not limited to, a System Information Block (SIB), an SIB15, an SIB20, or a Multicast Control Channel (MCCH) information.
  • SIB System Information Block
  • MCCH Multicast Control Channel
  • the current cell where the terminal UE is located may belong to one or more MBMS areas, where each MBMS area may send MBMS in MBSFN mode.
  • each MBMS area may send MBMS in MBSFN mode.
  • SC-PTM SC-PTM to send MBMS services.
  • the current cell where the UE is located may not belong to any MBMS area, that is, the cell sends the MBMS service in a unicast mode, such as a V2X service.
  • the neighboring MBMS area refers to an MBMS area that is different from the cell in which the UE is located, that is, the neighboring MBMS area is different from the MBMS area of the cell in which the UE is located.
  • the MBMS control information of the neighboring MBMS area is obtained.
  • the information may be obtained by the UE in the following manner: the UE reads the SIB of the current cell, the control information of the current MBMS area, and obtains the control information by using dedicated signaling.
  • the UE may read the MBMS service of the neighboring MBMS area in the current cell.
  • the embodiment may further include:
  • the UE reads the MCCH content (or SC-MCCH) of the neighboring MBMS area, if its content includes that it is receiving or interested in receiving one or some MBMS services;
  • the UE further reads an MBMS Traffic Channel (MTCH, or SC-MTCH) of the neighboring MBMS area, thereby obtaining content that it is receiving or interested in receiving one or some MBMS services, the interested service content. Can be receiving or waiting to be received;
  • MTCH MBMS Traffic Channel
  • SC-MTCH MBMS Traffic Channel
  • the UE is in the current cell, if the content of the MBMS service is being received, the UE also obtains the content of the same MBMS service in the neighboring MBMS area, and the UE may perform processing, such as merging or discarding, as needed.
  • FIG. 4 is a flowchart of a method for receiving a multimedia broadcast multicast service according to an embodiment of the present invention. As shown in 4, the process includes the following steps:
  • S404 Send MBMS control information to the terminal in a cell managed by the base station;
  • the MBMS control information is used to provide configuration information for the terminal to receive the MBMS service of the MBMS area.
  • the MBMS control information of the neighboring MBMS area of the cell under the control of the base station may be acquired, but not limited to:
  • the MBMS control information of the neighboring MBMS area is periodically transmitted by the camping cell.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods of various embodiments of the present invention.
  • a terminal for receiving a multimedia broadcast multicast service is also provided.
  • the device is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 5 is a diagram of a terminal for receiving a multimedia broadcast multicast service according to an embodiment of the present invention.
  • the apparatus includes: an obtaining module 50 configured to acquire MBMS control information of an MBMS area of a neighboring multimedia broadcast multicast service of a terminal camped cell; and a receiving module 52 configured to receive according to MBMS control information.
  • MBMS service in the adjacent MBMS area.
  • FIG. 6 is a structural block diagram of a receiving apparatus of a multimedia broadcast multicast service according to an embodiment of the present invention, which may be configured on a network side device, such as a base station.
  • the apparatus includes: an obtaining module 60 configured to acquire a base station.
  • the sending module 62 is configured to send the MBMS control information to the terminal in the cell managed by the base station; wherein the MBMS control information is used to provide configuration information for the terminal to receive the MBMS service of the MBMS area.
  • the obtaining, by the acquiring module 60, the MBMS control information of the neighboring MBMS area of the cell under the control of the base station includes:
  • the MBMS control information of the neighboring MBMS area is periodically sent by the camping cell;
  • the device included in this embodiment includes: a terminal device, and an access network device.
  • the terminal device includes the following: an in-vehicle unit OBU, a roadside unit RSU, and a user equipment UE (if there is no special description, the UE appearing in this embodiment represents one or more of the foregoing terminal devices), and the terminal device acquires a neighboring broadcast area ( Configuration information of the MBSFN area or the SC-PTM cell, and obtaining the required V2X service according to the configuration information;
  • the access network device may include an eNB, an MCE.
  • the eNB is responsible for the air interface signaling of the V2X service and the signaling between the MCE and the MCE, and receiving/transmitting the V2X service in the air interface;
  • the MCE is responsible for configuring the radio resource of the V2X service and determining the MBMS transmission mode (MBSFN or SC-PTM).
  • the MCE may also be responsible for sending neighboring WTRUs to the eNB through the M2 interface. Control information of the broadcast area, the eNB broadcasts control information of the received adjacent broadcast area on the air interface.
  • This embodiment also describes a method for reducing broadcast delay by using the above apparatus, including:
  • Embodiment 1 The MCE transmits control information of a neighboring broadcast area to an eNB through an M2 interface, and the eNB broadcasts control information of the received adjacent broadcast area through an air interface.
  • An MCE is responsible for the radio resource configuration of one or more adjacent MBSFN areas. To avoid interference between adjacent MBSFN areas, the MCE deploys services in the adjacent MBSFN area to different MBSFN resources (may be different MBSFN wireless). Frames can also be different MBSFN subframes).
  • the adjacent MBSFN area refers to the area where there is no overlapping area between the MBSFN areas, and the cells in the edge of the MBSFN area are adjacent; in order to reduce the control plane delay of the adjacent MBSFN area, the adjacent area may be adjacent.
  • the overlapping area is deployed between the MBSFN areas, and the configuration information of multiple MBSFN areas is transmitted in the overlapping cell (of course, V2X service data of multiple MBSFN areas is also transmitted), such as SIB13, MCCH message, MSI (MCH Scheduling Infomation) and the like.
  • Step 1 The eNB obtains configuration information of the neighboring MBSFN area, and the MCE sends configuration information including the adjacent MBSFN area to the eNB.
  • Solution 1 The MCE sends an M2 SETUP RESPONSE message to the eNB, and the MCH SETUP RESPONSE message includes the “MCCH related BCCH Configuration data per MBSFN area” cell, that is, the content of the SIB13; and considers the macro diversity effect of the MBSFN transmission, the UE in the edge cell of the MBSFN area Information about neighboring MBSFN areas may be received, for example, MCCH and MTCH signals to adjacent MBSFN area may be introduced (note: although it can be received, but cannot be decoded correctly, because the UE does not know the resource location of the specific information), except for SIB13.
  • the UE needs to obtain the information of the adjacent broadcast area, and first needs to obtain the SIB13 information of the adjacent MBSFN area, according to the above description.
  • the SIB13 content is determined by the MCE and sent to the eNB, so the MCE may send the SIB13 information of the adjacent MBSFN area to the current eNB;
  • the MCE only needs to send the specific V2X service in each MBSFN area (through the TMGI identifier), and the MCE only needs to send the SIB13 of the adjacent MBSFN area for the V2X service that is being or is about to start in the current MBSFN area. It may be defined that when the same V2X service exists in the adjacent MBSFN area, the MCE sends the corresponding SIB13, otherwise it does not need to be sent.
  • the MCE may send the SIB13 related information only in the edge cell when transmitting the SIB13 information of the neighboring MBSFN area to the eNB, and the eNB receives the SIB13 related information of the adjacent area, only in the MBSFN area.
  • the edge cell sends; the UE receives the SIB13 information of the neighboring area, and can determine that the UE is in the edge cell of the MBSFN area.
  • Solution 2 The MCE sends the MBS scheduling information (SCHEDULING INFORMATION) to the eNB, where the MCCH information of the adjacent MBSFN area is included.
  • MBS scheduling information (SCHEDULING INFORMATION)
  • the MCE Since the MCE knows the specific V2X service in each MBSFN area (through the TMGI identity), the MCE only needs to send the MBMS SCHEDULING INFORMATION of the adjacent MBSFN area for the V2X service that is being or is about to start in the current MBSFN area, that is, in the adjacent MBSFN. When the same V2X service exists in the area, the MCE sends the corresponding MBMS SCHEDULING INFORMATION, otherwise it does not need to be sent.
  • the MCE sends a trigger strip of the adjacent MBSFN area control information to the eNB.
  • the device includes at least one of the following: the eNB requests that the control information of the neighboring MBSFN area changes, and the other network element indicates or periodically sends the indication, such as a Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • Step 2 The eNB broadcasts control information of the adjacent MBSFN area on the air interface.
  • the eNB has two implementation schemes:
  • Solution 1 The eNB receives the M2 SETUP RESPONSE message including the MCCH related BCCH Configuration data per MBSFN area of the adjacent MBSFN area, that is, the SIB13 information, and the eNB broadcasts the SIB13 of the adjacent MBSFN area in the current cell. ,
  • the eNB may send the SIB13 of the adjacent MBSFN area in the SIB13 of the current cell,
  • the eNB adds the SIB13 of the adjacent MBSFN area in the current MBSFNAreaConfiguration message, such as adding the SIB13 information including the adjacent MBSFN area for each TMGI,
  • the eNB sends the SIB13 information of the neighboring area through the dedicated RRC signaling.
  • the dedicated RRC signaling refers to the unicast RRC signaling sent by the eNB to the UE when the UE is in the RRC-Connected mode.
  • the eNB receives the MBMS SCHEDULING INFORMATION of the adjacent MBSFN area from the M2, that is, the MBSFNAreaConfiguration information, and the eNB may send the air interface in the air interface by using the following three methods: 1) sending through the SIB13; or 2) transmitting through the MBSFNAreaConfiguration; or 3) Transmission by dedicated RRC signaling.
  • Step 3 The UE receives control information of the adjacent MBSFN area and further receives the required V2X service.
  • the UE adopts the following different processing methods according to different control information received:
  • the UE receives the SIB13 of the neighboring MBSFN area: the UE moves to the edge cell of the MBSFN area, and the UE further receives the required MCCH information, MSI, and V2X service data according to the received SIB13, that is, the UE in the edge cell can receive Two or more MBSFN area transmissions
  • the UE application layer may discard the received repeated service data as needed.
  • the UE may continue to receive the required V2X service data, and during the mobile process. Keep V2X business uninterrupted.
  • the UE receives the MBSFNAreaConfiguration of the neighboring MBSFN area: the UE moves to the edge cell of the MBSFN area, and the UE further receives the required MSI and V2X service data according to the received MBSFNAreaConfiguration, that is, the UE in the edge cell can receive two or
  • the UE receives the dedicated signaling: the UE moves to the MBSFN area edge cell, and the UE may include the SIB13, MBSFNAreaConfiguration or MSI of the adjacent MBSFN area according to the content of the dedicated signaling, when the UE moves to another MBSFN area.
  • the UE can continue to receive the required V2X service data.
  • the MSI of the adjacent MBSFN area refers to a mapping relationship between the TMGI and the V2X service (TMGI) and the LCID (Logical Channel Identifier) corresponding to the V2X service in the current MBSFN area.
  • the MCCH information and the MBSFNAreaConfiguration information belong to the same concept.
  • Embodiment 2 The eNB exchanges control information of the adjacent broadcast area through the X2 port, and the eNB broadcasts control information of the adjacent area in the air interface.
  • eNB1 is located in MBSFN area1
  • eNB2 is located in MBSFN area2
  • MBSFN area1 and MBSFN area2 are adjacent.
  • the eNBs 1 and 2 are configured to exchange the MBSFN area control information through the X2 interface, and the UE may request, switch, and change the control information of the adjacent MBSFN area, and other network sections. Points (such as MCE, or MME, etc.) indicate or periodically interact.
  • the control information of the interaction between the eNBs 1, 2 includes at least one of the following: SIB13, MCCH information, MSI. It should be noted that if the interactive content is an MSI, it is assumed that the same V2X service exists in the adjacent MBSFN area, and the UE is known. The mapping relationship between the TMGI corresponding to the service and the same V2X service (TMGI) and LCID.
  • the eNB After acquiring the control information of the neighboring MBSFN area, the eNB sends the information to the UE in the local area, such as by using the SIB13, the MCCH information, or the dedicated RRC signaling;
  • the UE After receiving the control information of the neighboring MBSFN area, the UE obtains the required V2X service data according to the requirement (such as the UE moves to the adjacent MBSFN area), and the V2X service being received is not interrupted during the UE mobile process.
  • Embodiment 3 The terminal requests control information of a neighboring broadcast area, and acquires required service data according to the obtained control information.
  • the implementation process includes:
  • Step 1 The UE requests control information of a neighboring broadcast area
  • the UE requests control information of the adjacent area in at least one of the following manners:
  • the access layer AS requests, for example, the UE sends RRC signaling to the eNB, and requests the required control information in the RRC signaling, for example, the UE indicates the required control information to the eNB through the MBMSInterestIndication;
  • the eNB may obtain control information of the adjacent area by using at least one of the following methods:
  • the non-access stratum NAS requests the UE to send NAS signaling, such as attachRequest, TAU, serviceRequest, and other NAS signaling to the MME (Mobility Management Entity), and instruct the required control information in the NAS signaling;
  • NAS signaling such as attachRequest, TAU, serviceRequest, and other NAS signaling
  • MME Mobility Management Entity
  • the MME After receiving the request, the MME obtains the required control information by using at least one of the following methods:
  • Application layer/service layer request the UE sends a request to the application server AS through application layer signaling, and indicates the required control information in the request.
  • the AS forwards the request to the MCE and/or the eNB over the 3GPP network.
  • Step 2 The UE receives the required neighboring area control information
  • the UE can obtain the required control information by using at least one of the following methods:
  • the third step the UE receives the required V2X service data according to the adjacent area control information.
  • the UE moves to the adjacent MBSFN area and receives the required V2X service data according to the acquired control information.
  • Embodiment point 4 modifying the MBMS-related periodic configuration parameters
  • the minimum MCCH Repetition period 320ms can be reduced to 10ms
  • the MBMS bearer corresponding to the V2X service has been established in the adjacent MBSFN area, and the maximum time for the UE to move to the adjacent MBSFN area to obtain the required V2X service is:
  • reducing the above cycle parameters may increase the air interface load.
  • the present embodiment is described by taking an MBSFN area as an example.
  • the method in this embodiment can also be applied to other broadcast areas, such as SC-PTM (Single Cell-Point To Multipoint), CBS (Cell Broadcast Service), and the like.
  • SC-PTM Single Cell-Point To Multipoint
  • CBS Cell Broadcast Service
  • the broadcast area if used in other broadcast areas, the corresponding control information needs to be modified accordingly.
  • the MCCH information is SC-MCCH information in the SC-PTM
  • the SIB13 corresponds to the SIB20 in the SC-PTM.
  • the method of this embodiment The application is not limited to SIB13 or SIB20, but also SIB15 or a new SIB.
  • the car network V2X service is taken as an example for description.
  • the method in this embodiment can also be applied to other types of broadcast services, such as digital video, Machine Type Communication (MTC), and Public Safety (PS) communication. , Cluster MCPTT (Mission Critical Push To Talk).
  • the MCE sends the SIB13 related information of the adjacent MBSFN area to the eNB.
  • FIG. 7 is a schematic flowchart of the first example of the present invention. As shown in FIG. 7, the method includes:
  • Step S701 The MCE sends the SIB13 related information of the adjacent MBSFN area to the eNB.
  • the MCE sends an M2SETUP RESPONSE message to the eNB, and the MCH SETUP RESPONSE message includes an "MCCH related BCCH Configuration data per MBSFN area" cell, that is, the content of the SIB13;
  • the MCE knows the specific V2X service in each MBSFN area (through the TMGI identity)
  • the MCE only needs to send the SIB13 of the adjacent MBSFN area for the V2X service that is being or is about to start in the current MBSFN area, that is, in the phase.
  • the MCE sends the corresponding SIB13, otherwise it does not need to be sent.
  • the triggering step S701 includes at least one of the following reasons:
  • the MCE receives the "M2SETUP REQUEST" message sent by the eNB, and the message includes: an MBMS Service Area List cell, where the required adjacent MBSFN area ID can be included in the cell.
  • the MCE includes the SIB13 related information of the adjacent MBSFN area in the M2SETUP RESPONSE.
  • the control information of the adjacent MBSFN area changes.
  • the MCE sends SIB13 related information through the M2 interface.
  • Step S702 The eNB sends the SIB13 information of the adjacent MBSFN area through the air interface.
  • the eNB sends the SIB13 information in at least one of the following ways:
  • SIB13 that is, the eNB transmits the SIB13 information of the neighboring MBSFN area through the SIB13 of the current cell.
  • a field may be added: areaOverlap BOOLEAN. When the value is true, it is represented as an overlapping area, otherwise it is an adjacent area. .
  • the eNB preferably transmits the control information of the adjacent MBSFN area only in the edge cell of the MBSFN area.
  • the MCCH information that is, the SIB13 information of the adjacent MBSFN area is transmitted by the MBSFNAreaConfiguration, the MBSFN-AreaInfoList cell is added to the MBSFNAreaConfiguration, and the SIB13 information of the one or more adjacent MBSFN areas is included in the MBSFN-AreaInfoList cell.
  • the eNB sends the SIB13 information of the adjacent MBSFN area, such as RRCConnectionReconfiguration signaling, to the UE through dedicated RRC signaling.
  • Step S703 The UE acquires SIB13 information of the adjacent MBSFN area.
  • the UE acquires SIB13 information of the neighboring MBSFN area in at least one of the following manners: SIB13, MCCH information or dedicated RRC signaling.
  • the UE moves to the edge cell of the MBSFN area, acquires the MCCH information of the neighboring MBSFN area according to the SIB13 information of the neighboring MBSFN area, and determines the configuration information of the required V2X service from the MCCH information of the adjacent MBSFN area.
  • Step S704 The UE receives the required V2X service data.
  • the UE moves to the adjacent MBSFN area, acquires the MSI according to the configuration information of the required V2X service, and receives the required V2X service data according to the MSI.
  • the MCE sends the MCCH information of the adjacent MBSFN area to the eNB.
  • FIG. 8 is a schematic flowchart of the second embodiment of the present invention. As shown in FIG. 8, the method includes:
  • Step S801 The MCE sends an MBMS SCHEDULING INFORMATION to the eNB, where the MCCH information of the adjacent MBSFN area is included.
  • the MCE since the MCE knows the specific V2X service in each MBSFN area (through the TMGI identity), the MCE only needs to send the MBMS SCHEDULING INFORMATION of the adjacent MBSFN area for the V2X service that is being or is about to start in the current MBSFN area, that is, When the same V2X service exists in the adjacent MBSFN area, the MCE sends the corresponding MBMS SCHEDULING INFORMATION, otherwise it does not need to be sent.
  • the triggering condition for the MCE to send the neighboring MBSFN area configuration information to the eNB includes at least one of the following: the eNB requests that the control information of the neighboring MBSFN area changes, and other network elements (such as the MME) indicate or periodically transmit.
  • Step S802 The eNB sends the MCCH information of the adjacent MBSFN area through the air interface.
  • the eNB sends the MCCH information in at least one of the following ways:
  • SIB13 that is, the eNB transmits MCCH information of the adjacent MBSFN area through the SIB13 of the current cell.
  • the eNB preferably transmits the control information of the adjacent MBSFN area only in the edge cell of the MBSFN area.
  • the MCCH information that is, the MCCH information of the neighboring MBSFN area is transmitted through the MBSFNAreaConfiguration.
  • the configuration information of the same V2X service in the adjacent MBSFN area can be added in the MBMS-SessionInfo and the PMCH-Config in the MBSFNAreaConfiguration.
  • the UE is in RRC-Connected mode, and the eNB sends MCCH information of the adjacent MBSFN area, such as RRCConnectionReconfiguration signaling, to the UE through dedicated RRC signaling.
  • MCCH information of the adjacent MBSFN area such as RRCConnectionReconfiguration signaling
  • Step S803 The UE acquires MCCH information of the adjacent MBSFN area.
  • the UE acquires MCCH information of the neighboring MBSFN area in at least one of the following manners: SIB13, MCCH information, or dedicated RRC signaling.
  • the UE moves to the edge cell of the MBSFN area, and determines the configuration information of the required V2X service according to the MCCH information of the adjacent MBSFN area.
  • Step S804 The UE acquires the required V2X service data.
  • the UE moves to the adjacent MBSFN area, acquires the MSI according to the configuration information of the required V2X service, and receives the required V2X service data according to the MSI.
  • the eNB exchanges control information of the adjacent MBSFN area through the X2 port.
  • FIG. 9 is a schematic flowchart of the third example of the present invention. As shown in FIG. 9, the method includes:
  • Step S901 The eNB exchanges adjacent MBSFN area control information through the X2 port.
  • eNB1 is located in MBSFN area1
  • eNB2 is located in MBSFN area2
  • MBSFN area1 and MBSFN area2 are adjacent.
  • the eNBs 1 and 2 are configured to exchange the MBSFN area control information through the X2 interface, including at least one of the following: the UE requests the eNB to perform handover, and the control information of the adjacent MBSFN area changes, and other network nodes (such as MCE, or MME, etc.) indicate Or interact periodically.
  • the UE requests the eNB to perform handover
  • the control information of the adjacent MBSFN area changes and other network nodes (such as MCE, or MME, etc.) indicate Or interact periodically.
  • the control information of the interaction between the eNBs 1, 2 includes at least one of the following: SIB13, MCCH information, MSI. It should be noted that if the interactive content is an MSI, it is assumed that the same V2X service exists in the adjacent MBSFN area, and the UE is known. The mapping relationship between the TMGI corresponding to the service and the same V2X service (TMGI) and LCID.
  • Step S902 After acquiring the control information of the neighboring MBSFN area, the eNB sends the information to the UE in the local area, such as by using the SIB13, the MCCH information, or the dedicated RRC signaling.
  • the eNB preferably transmits the control information of the adjacent MBSFN area only in the edge cell of the MBSFN area.
  • the eNB when the eNB determines that there is a V2X service in the neighboring MBSFN area that is the same as the current MBSFN area, the eNB sends the control information of the neighboring MBSFN area through the air interface. Otherwise, the eNB does not send the control information.
  • Step S903 After receiving the control information of the neighboring MBSFN area, the UE acquires the required V2X service data according to the requirement (such as the UE moves to the adjacent MBSFN area), and the V2X service being received is not in the process of the UE moving. Interrupted.
  • FIG. 10 is a schematic flowchart of the fourth embodiment of the present invention. As shown in FIG. 10, the method includes:
  • Step S1001 The UE requests control information of a neighboring broadcast area.
  • the UE requests control information of the adjacent area in at least one of the following manners:
  • the access layer AS requests, for example, the UE sends RRC signaling to the eNB, and requests the required control information in the RRC signaling, for example, the UE indicates the required control information to the eNB through the MBMS InterestIndication;
  • the eNB may obtain control information of the adjacent area by using at least one of the following methods:
  • NAS signaling such as attachRequest, TAU, serviceRequest, and other NAS signaling to the MME (Mobility Management Entity), and indicates required control information in the NAS signaling;
  • the MME After receiving the request, the MME obtains the required control information by using at least one of the following methods:
  • Application layer/service layer request the UE sends a request to the application server AS through application layer signaling, and indicates the required control information in the request.
  • the AS forwards the request to the MCE and/or the eNB over the 3GPP network.
  • Step S1002 The UE receives required neighboring area control information
  • the UE can obtain the required control information by using at least one of the following methods:
  • Step S1003 The UE receives the required V2X service data according to the adjacent area control information.
  • the UE moves to the adjacent MBSFN area and receives the required V2X service data according to the acquired control information.
  • the V2X service received by the UE is not interrupted.
  • FIG. 11 is a schematic diagram of a system architecture according to an embodiment of the present invention.
  • the system includes: a radio access network device 501 and a terminal 502; and a radio access network.
  • the device 501 includes a base station module 5011 and an MCE module 5012.
  • the terminal 502 includes a terminal receiving module 5021, a processing module 5022, and a sending module 5023.
  • the terminal receiving module 5021 is configured to receive adjacent MBSFN area control information sent by the base station module 5011 through an air interface.
  • the processing module 5022 is configured to determine the required V2X service configuration information according to the received neighboring MBSFN area control information; the sending module 5023 of the terminal 502 is configured to send the request message of the adjacent MBSFN area control information to the base station module 5011.
  • the base station module 5011 is configured to transmit and receive adjacent MBSFN area control information, receive the request of the terminal 502, and send the adjacent MBSFN area control information to the terminal 502.
  • the MCE module 5012 is configured to send the adjacent MBSFN area control information to the base station module 5011, and is further configured to The request message sent by the base station module 5011 is received.
  • the same vehicle network V2X service is deployed in two adjacent MBSFN areas in combination with a specific application scenario.
  • Two MBSFN areas are configured with radio resources through one MCE, eNB1 is located in MBSFN area1, and eNB2 is located in MBSFN area2.
  • the UE is located in the MBSFN area1, and receives the required V2X service 1 through the eNB1;
  • the MCE sends the control information of the MBSFN area 2 to the eNB1, or the eNB1 acquires the control information of the MBSFN area2 through the X2 interface;
  • the eNB 1 transmits control information of the MBSFN area 2.
  • the UE moves to the edge cell of the MBSFN area1;
  • the UE receives the configuration information of the V2X service 1 in the MBSFN area 2;
  • the UE moves to the MBSFN area 2, and the UE continues to receive the required V2X service 1.
  • the time delay of the MBSFN transmission can be reduced, the service continuity of the UE moving between different MBSFN areas can be ensured, and the V2X service can be transmitted by using the MBSFN mode.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store a receiving method for performing the multimedia broadcast multicast service of the embodiment of the present invention, specifically, the program code that performs the following steps:
  • S2 Receive MBMS services of adjacent MBMS areas according to MBMS control information.
  • the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • a mobile hard disk e.g., a hard disk
  • magnetic memory e.g., a hard disk
  • the processor performs, according to the stored program code in the storage medium, the MBMS control information of acquiring the MBMS area of the adjacent multimedia broadcast multicast service of the terminal camped cell;
  • the processor performs the MBMS service of receiving the adjacent MBMS area according to the MBMS control information according to the stored program code in the storage medium.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. Execution shown or described The steps are either made into individual integrated circuit modules, or a plurality of modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
  • the technical solution of the embodiment of the present invention is to obtain MBMS control information of an MBMS area of a neighboring multimedia broadcast multicast service of a terminal camped cell, and receive an MBMS service of an adjacent MBMS area according to the MBMS control information, by using an adjacent MBMS area.
  • Receiving the MBMS service can avoid the extra delay of receiving the MBMS service when the UE moves to the adjacent MBMS area, and solves the problem that the delay of receiving the MBMS service when the UE moves in the related art is too large, thereby achieving the reduction of the MBMS service.
  • the effect of transmission delay is to obtain MBMS control information of an MBMS area of a neighboring multimedia broadcast multicast service of a terminal camped cell, and receive an MBMS service of an adjacent MBMS area according to the MBMS control information, by using an adjacent MBMS area.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de réception de service de multidiffusion/diffusion multimédia, et un terminal, une station de base et un support de stockage, le procédé consistant : à acquérir des informations de commande MBMS concernant une région MBMS de service multidiffusion de diffusion multimédia adjacente à une cellule résidente de terminal, puis à recevoir un service MBMS de la région MBMS adjacente conformément aux informations de commande MBMS. Au moyen de la présente invention, le problème dans l'état de la technique d'un délai de temporisation trop long pour recevoir un service MBMS pendant le mouvement d'un UE est résolu, ce qui permet d'obtenir l'effet de raccourcissement du délai du service MBMS.
PCT/CN2017/070913 2016-03-31 2017-01-11 Procédés de réception de service de multidiffusion/diffusion multimédia, et terminal, station de base et support de stockage WO2017166900A1 (fr)

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