WO2022017190A1 - 信息传输方法、装置、相关设备及存储介质 - Google Patents

信息传输方法、装置、相关设备及存储介质 Download PDF

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Publication number
WO2022017190A1
WO2022017190A1 PCT/CN2021/105238 CN2021105238W WO2022017190A1 WO 2022017190 A1 WO2022017190 A1 WO 2022017190A1 CN 2021105238 W CN2021105238 W CN 2021105238W WO 2022017190 A1 WO2022017190 A1 WO 2022017190A1
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WIPO (PCT)
Prior art keywords
multicast
base station
broadcast service
core network
dedicated channel
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PCT/CN2021/105238
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English (en)
French (fr)
Inventor
刘潇蔓
谢芳
李男
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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Publication of WO2022017190A1 publication Critical patent/WO2022017190A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0007—Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/165—Performing reselection for specific purposes for reducing network power consumption

Definitions

  • the present application relates to the field of wireless communication, and in particular, to an information transmission method, apparatus, related equipment and storage medium.
  • MBMS Multimedia Broadcast Multicast Service
  • MBMS technology is a technology for transmitting data from one data source to multiple target terminals.
  • the sharing of resources of the network (electrical signal or optical signal) and the access network) improves the utilization of network resources, especially air interface resources.
  • the MBMS technology does not support cell switching of multicast or broadcast services.
  • the embodiments of the present application provide an information transmission method, an apparatus, a related device, and a storage medium.
  • the embodiment of the present application provides an information transmission method, which is applied to core network equipment, including:
  • the multicast or broadcast service end identifier is sent to the source base station through the dedicated channel of the terminal established with the source base station.
  • the sent multicast or broadcast service end identifier is used for the target base station to determine the opportunity to receive the multicast or broadcast service data from the core network device.
  • the dedicated channel is established during cell handover preparation or execution or completion
  • the dedicated channel is established when a multicast or broadcast session corresponding to the multicast or broadcast service is established.
  • the dedicated channel is triggered and established by one of the following devices:
  • the method further includes:
  • the first indication information sent by the source base station is received to trigger the establishment of the dedicated channel; the first indication information is used to instruct the establishment of the dedicated channel.
  • the method when the dedicated channel is triggered to be established by the target base station, the method further includes:
  • the second indication information sent by the target base station is received to trigger the establishment of the dedicated channel; the second indication information is used to instruct the establishment of the dedicated channel.
  • the method further includes:
  • a path switching request sent by the target base station is received to trigger establishment of the dedicated channel; the path switching request is used for requesting to acquire data of the multicast or broadcast service from the core network device.
  • the method when the dedicated channel is established when a multicast session corresponding to the multicast or broadcast service is established, the method further includes:
  • the dedicated channel has a binding relationship with at least one of the following related information of the multicast or broadcast service:
  • QoS flow Quality of service flow identification
  • PDU session Data protocol unit session identification
  • the method also includes:
  • the determining that the terminal that performs the multicast or broadcast service performs cell handover includes:
  • a path switching request sent by the target base station is received; the path switching request is configured to request to acquire the data of the multicast or broadcast service from the core network device.
  • the method also includes:
  • the third indication information is configured to indicate the release of resources of the dedicated channel
  • the resources of the dedicated channel are released.
  • the sending of the multicast or broadcast service end identifier to the source base station includes:
  • the embodiment of the present application also provides an information transmission method, which is applied to the source base station, including:
  • the received multicast or broadcast service end identifier is sent to the target base station; wherein, the terminal receives the multicast or broadcast service and performs handover.
  • the multicast or broadcast service end identifier sent by the core network device is received through the dedicated channel of the terminal established with the core network.
  • the sent multicast or broadcast service end identifier is used for the target base station to determine the opportunity to receive the multicast or broadcast service data from the core network device.
  • the dedicated channel is established during cell handover preparation or execution or completion
  • the dedicated channel is established when a multicast or broadcast session corresponding to the multicast or broadcast service is established.
  • the dedicated channel is triggered and established by one of the following devices:
  • the method further includes:
  • the dedicated channel has a binding relationship with at least one of the following related information of the multicast or broadcast service:
  • the embodiment of the present application also provides an information transmission method, which is applied to a target base station, including:
  • the multicast or broadcast service end identifier sent by the source base station is received by the source base station through the terminal shared channel established with the core network device.
  • the received multicast or broadcast service end identifier is used for the target base station to determine the opportunity to receive the multicast or broadcast service data from the core network device.
  • the dedicated channel is established during cell handover preparation or execution or completion
  • the dedicated channel is established when a multicast session corresponding to the multicast or broadcast service is established.
  • the dedicated channel is triggered and established by one of the following devices:
  • the method when the dedicated channel is triggered to be established by the target base station, the method further includes:
  • the dedicated channel has a binding relationship with at least one of the following related information of the multicast or broadcast service:
  • the method also includes:
  • the third indication information is used to instruct to release the resources of the dedicated channel.
  • the sending the third indication information to the core network device includes:
  • the multicast or broadcast service data is received from the core network, and third indication information is sent to the core network device.
  • the multicast or broadcast service end identifier sent by the receiving source base station includes:
  • the embodiment of the present application also provides an information transmission device, including:
  • the first transmission unit is configured to send a multicast or broadcast service end identifier to the source base station; wherein the terminal receives the multicast or broadcast service and performs handover.
  • the embodiment of the present application also provides an information transmission device, including:
  • the second transmission unit is configured to receive the multicast or broadcast service end identifier sent by the core network device; and send the received multicast or broadcast service end identifier to the target base station; wherein, the terminal receives the multicast or broadcast service and performs switch.
  • the embodiment of the present application also provides an information transmission device, including:
  • the third transmission unit is configured to receive the multicast or broadcast service end identifier sent by the source base station; wherein, the terminal receives the multicast or broadcast service and performs handover.
  • the embodiment of the present application also provides a core network device, including: a first processor and a first communication interface; wherein,
  • the first communication interface is configured to send a multicast or broadcast service end identifier to the source base station; wherein the terminal receives the multicast or broadcast service and performs handover.
  • the embodiment of the present application further provides a source base station, including: a second processor and a second communication interface; wherein,
  • the second communication interface is configured to receive the multicast or broadcast service end identifier sent by the core network device; and send the received multicast or broadcast service end identifier to the target base station; wherein the terminal receives the multicast or broadcast service and switch.
  • the embodiment of the present application also provides a target base station, including: a third processor and a third communication interface; wherein,
  • the third communication interface is configured to receive the multicast or broadcast service end identifier sent by the source base station; its terminal receives the multicast or broadcast service and performs handover.
  • Embodiments of the present application further provide a core network device, including: a first processor and a first memory configured to store a computer program that can be run on the processor,
  • the first processor is configured to execute the steps of any method on the core network device side when running the computer program.
  • Embodiments of the present application further provide a source base station, including: a second processor and a second memory configured to store a computer program that can be executed on the processor,
  • the second processor is configured to execute the steps of any method on the source base station side when running the computer program.
  • Embodiments of the present application further provide a target base station, including: a third processor and a third memory configured to store a computer program that can be executed on the processor,
  • the third processor is configured to execute the steps of any of the above-mentioned methods on the target base station side when running the computer program.
  • Embodiments of the present application further provide a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of any method on the core network device side, or implements any method on the source base station side. steps, or steps of implementing any method on the side of the target base station.
  • the core network equipment sends a multicast or broadcast service end identifier to the source base station; wherein, the terminal receives the multicast or broadcast service and performs switching;
  • the source base station After receiving the multicast or broadcast service end identifier sent by the core network device, the source base station sends the received multicast or broadcast service end identifier to the target base station, and transmits the multicast or broadcast service end identifier, Therefore, the target base station can know the end identifier of the multicast or broadcast service, that is, the opportunity to receive the multicast or broadcast service data from the core network equipment, so as to realize the continuous and orderly transmission of the multicast or broadcast service by the target base station, which ensures the Continuity of multicast or broadcast services.
  • FIG. 1 is a schematic flowchart of a method for information transmission according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of another method for information transmission according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a third information transmission method according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a fourth information transmission method according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a terminal receiving a multicast or broadcast service according to an application embodiment of the present application
  • FIG. 6 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a second information transmission apparatus according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a third information transmission apparatus according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a core network device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a source base station according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a target base station according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of an information transmission system according to an embodiment of the present application.
  • the use scenarios of MBMS technology are mainly radio and television, public safety and other business scenarios. Therefore, the core idea of the MBMS solution is to pre-define the business itself as a broadcast business, in order to ensure coverage in the network. It is divided into multiple broadcast areas, broadcasts in these areas, and informs the terminal of the specific location of these broadcast services and the Temporary Mobile Group Identifier (TMGI), and the terminal actively goes to the corresponding location to obtain the corresponding broadcast according to its own subscription. content. Specifically, on the air interface, two transmission modes are supported, one is a multicast broadcast single frequency network (MBSFN) mode, and the other is a single cell point-to-multipoint (SC-PTM) mode.
  • MBSFN multicast broadcast single frequency network
  • SC-PTM single cell point-to-multipoint
  • MBMS technology is mainly oriented to predefined services such as broadcasting, and the multicast or broadcast area is pre-planned, and does not consider the problem of service continuity, and does not support multicast or broadcast services. Switch process.
  • the multicast or broadcast service end identifier is transmitted through a transmission channel dedicated to the switching terminal established between the source base station and the core network equipment, so that the target base station can learn about the multicast Or the broadcast service end identifier, that is, the timing of receiving multicast or broadcast service data from the core network device is known, so as to realize the continuous and orderly transmission of the multicast or broadcast service by the target base station.
  • An embodiment of the present application provides an information transmission method, which is applied to core network equipment. As shown in FIG. 1 , the method includes:
  • Step 100 determine that the terminal receiving the multicast or broadcast service performs cell handover
  • Step 101 Send a multicast or broadcast service end identifier to the source base station.
  • a multicast or broadcast transmission channel for transmitting the multicast or broadcast service data is further established between the core network device and the source base station.
  • the sent multicast or broadcast service end identifier is used for the target base station to determine the opportunity to receive the multicast or broadcast service data from the core network device.
  • the multicast or broadcast service is received by the switching terminal, that is, the terminal receives the multicast or broadcast service and performs switching (cell switching); of course, in practical applications, the multicast or broadcast service may also be It will be received by other terminals, that is, the multicast or broadcast service is received by at least the switched terminal.
  • the core network device may send a multicast or broadcast service end identifier to the source base station through the dedicated channel of the terminal established with the source base station.
  • the dedicated channel may also be called a dedicated (in English can be expressed as specific) channel, may also be called a dedicated transmission channel, may also be called a dedicated transmission channel, and may also be called a unicast channel or a unicast transmission channel. This is not limited in the application embodiment, as long as the function of the dedicated channel is implemented.
  • step 100 during the handover process, the target base station will send a path switching request to the core network device to request the downlink data transmission path to be switched to the target base station, that is, at this time, the core The network device will know that the terminal performs cell handover.
  • the core network device receives the path switching request sent by the target base station, that is, determines to receive the terminal to perform cell switching; the path switching request is used to request the core network device from the Acquire data of the multicast or broadcast service.
  • the dedicated channel can be established during the cell handover process (including the handover preparation, handover execution, and handover completion processes), that is, the dedicated channel is established during the cell handover process.
  • the shared channel is established when needed, that is, the shared channel is established on demand, so that the implementation is flexible and will not cause waste of resources.
  • the handover preparation process may include: the terminal receives multicast or broadcast service data, performs measurement reporting, the source base station makes a handover decision, and the source base station and the target base station exchange information to determine cell handover.
  • the handover execution process may include: the terminal receives the handover command to start the handover, synchronizes to the new cell, and converts relevant information (serial number status (SN status in English), data (expressed as data in English, including locally cached and received from the core network). new data)) to the target base station, so that the target base station caches the information and other steps.
  • relevant information serial number status (SN status in English)
  • data expressed as data in English, including locally cached and received from the core network). new data
  • the handover completion process may include: the terminal completes the cell handover, the target base station sends a path switch request to the core network, and subsequent steps.
  • the dedicated channel can also be established when the multicast or broadcast session is established, that is, the dedicated channel is established when the multicast or broadcast session corresponding to the multicast or broadcast service is established.
  • the shared channel is established when the terminal starts to receive the multicast or broadcast service, so that it can be always available.
  • the establishment of the dedicated channel may be triggered by the source base station; specifically, the source base station may send an indication message (sent during cell handover) to the core network device to instruct the establishment of the dedicated channel. share the channel.
  • the method may further include:
  • the first indication information sent by the source base station is received to trigger the establishment of the dedicated channel; the first indication information is used to instruct the establishment of the dedicated channel.
  • the dedicated channel may also be triggered by the target base station to establish the dedicated channel; specifically, the target base station may send an indication message (sent during the cell handover) to the core network device to indicate The exclusive channel is established.
  • the method may further include:
  • the second indication information sent by the target base station is received to trigger the establishment of the dedicated channel; the second indication information is used to instruct the establishment of the dedicated channel.
  • the dedicated channel may also be triggered by the core network device to establish the dedicated channel; specifically, the core network device may, after receiving the path switching request sent by the target base station (during the cell switching process), Trigger establishment of the dedicated channel.
  • the method may further include:
  • a path switching request sent by the target base station is received to trigger establishment of the dedicated channel; the path switching request is used for requesting to acquire data of the multicast or broadcast service from the core network device.
  • the establishment of the shared channel may be triggered when the terminal applies for the multicast or broadcast service.
  • the method may further include:
  • the multicast or broadcast transmission channel can be characterized by a PDU session dedicated to multicast or broadcast service, or can be characterized by QoS flow in a PDU session dedicated to multicast or broadcast service, or a base station (
  • GTP general wireless packet service tunneling protocol
  • N3tunnel tunnel in English
  • the multicast service in the PDU session Characterized by a separate QoS flow.
  • the dedicated channel has a binding relationship with at least one of the following related information of the multicast or broadcast service:
  • the transmission tunnel refers to a GTP tunnel, and may specifically be an N3tunnel.
  • the core network device may include a user plane function (UPF) entity or SMF.
  • UPF user plane function
  • SMF user plane function
  • multiple core network devices such as AMF, SMF, UPF are required to exchange information.
  • the core network device When the core network device determines that the terminal performs cell handover, it will send the multicast or broadcast service end marker (which can be expressed as end marker in English) to the source base station through the dedicated channel; specifically, One or more packets representing the end of a multicast or broadcast service can be sent, so that the target base station can know that the data packets sent by the source base station have ended, and then need to obtain the multicast or broadcast from the core network device. business data package.
  • the multicast or broadcast service end marker which can be expressed as end marker in English
  • the target base station when the target base station receives the multicast or broadcast service end identifier and obtains the multicast or broadcast service data from the core network device, the terminal has achieved cell handover at this time, and To ensure the continuity of multicast or broadcast services, the target base station can notify the core network device to release the resources of the dedicated channel to save resources.
  • the method may further include:
  • the third indication information is used to instruct to release the resources of the dedicated channel
  • the resources of the dedicated channel are released.
  • the embodiment of the present application also provides an information transmission method, which is applied to the source base station.
  • the method includes:
  • Step 200 determine that the terminal receiving the multicast or broadcast service performs cell handover
  • Step 201 Receive a multicast or broadcast service end identifier sent by a core network device
  • Step 202 Send the received multicast or broadcast service end identifier to the target base station.
  • the terminal receives the multicast or broadcast service and switches.
  • the sent multicast or broadcast service end identifier is used for the target base station to determine the opportunity to receive the multicast or broadcast service data from the core network device; there is also an established relationship between the core network device and the source base station.
  • a multicast or broadcast transmission channel for transmitting the multicast or broadcast service data is used for the target base station to determine the opportunity to receive the multicast or broadcast service data from the core network device; there is also an established relationship between the core network device and the source base station.
  • step 200 after the source base station receives the handover request confirmation sent by the target base station, it is determined that the terminal performs cell handover.
  • the source base station receives the multicast or broadcast service end identifier sent by the core network device through the dedicated channel of the terminal established with the core network.
  • the method may further include:
  • receiving one or more packets representing the multicast or broadcast service end identifier sent by the core network device receiving one or more packets representing the multicast or broadcast service end identifier sent by the core network device;
  • step 202 after the source base station receives the multicast or broadcast service end identifier sent by the core network device, it may not immediately send it to the target base station, for example, after forwarding the locally cached data to the target base station. Then send it to the target base station.
  • the embodiment of the present application also provides an information transmission method, which is applied to a target base station.
  • the method includes:
  • Step 300 Determine that the terminal receiving the multicast or broadcast service performs cell handover
  • Step 301 Receive a multicast or broadcast service end identifier sent by the source base station.
  • the received multicast or broadcast service end identifier is used for the target base station to determine the opportunity to receive the multicast or broadcast service data from the core network device.
  • a multicast transmission channel for transmitting the multicast or broadcast service data is also established between the core network device and the source base station; the multicast or broadcast service end identifier sent by the source base station is the source base station Received through the terminal shared channel established with the core network device.
  • step 300 when the target receiving station receives the handover request sent by the source base station and completes the access control operation by itself, it is determined that the terminal performs cell handover.
  • the method may further include:
  • the target base station may receive one or more packets representing the end identifier of a multicast or broadcast service sent by the source base station.
  • the method may further include:
  • the third indication information is used to instruct to release the resources of the dedicated channel.
  • the resources of the shared channel may be released on the premise that the service is continuous. Therefore, the target base station may send third indication information to the core network device after receiving the multicast or broadcast service end identifier.
  • the target base station receives the multicast or broadcast service end identifier sent by the source base station, and sends third indication information to the core network device.
  • the target base station may also send third indication information to the core network device after receiving the multicast or broadcast service data sent by the core network device.
  • the target base station receives the multicast or broadcast service data from the core network, and sends third indication information to the core network device.
  • the embodiment of the present application also provides an information transmission method, as shown in FIG. 4 , the method includes:
  • Step 401 The core network device sends a multicast or broadcast service end identifier to the source base station; wherein, the terminal receives the multicast or broadcast service and performs handover;
  • Step 402 After receiving the multicast or broadcast service end identifier sent by the core network device, the source base station sends the received multicast or broadcast service end identifier to the target base station;
  • Step 403 The target base station receives the multicast or broadcast service end identifier sent by the source base station.
  • a core network device sends a multicast or broadcast service end identifier to a source base station; wherein, the terminal receives the multicast or broadcast service and performs handover; and the source base station receives the core
  • the received multicast or broadcast service end identifier is sent to the target base station, and the multicast or broadcast service end identifier is transmitted, so that the target base station can know the multicast or broadcast service end identifier.
  • the service end identifier is to know the timing of receiving multicast or broadcast service data from the core network equipment, so as to realize the continuous and orderly transmission of the multicast or broadcast service by the target base station, and ensure the continuity of the multicast or broadcast service.
  • a dedicated transmission channel for UE (receiving multicast or broadcast services) between the source base station and the UPF is established, so that the target base station can know the end marker of the specific handover UE, and the target base station can continuously and orderly for data of sending.
  • the core network element triggers the establishment of a UE-specific transmission channel between the source base station and the core network element during the handover process.
  • Step 1 The UE requests a multicast or broadcast service, that is, sends a multicast or broadcast service application to the core network. After the core network side identifies the multicast or broadcast service applied for by the UE, it establishes the corresponding PDUs required for multicast transmission for the UE session, QoS flow, transmission tunnel, etc., that is, to establish a multicast transmission channel for the UE.
  • Step 2 in the process of receiving the multicast or broadcast service, the UE performs measurement and reports the measurement result according to the configuration on the network side;
  • Step 3 the source base station decides to switch the UE to the target base station, and the source base station sends a handover request to the target base station;
  • the source base station may decide to switch the UE to the target base station for many reasons. For example, the source base station may decide to switch the UE to the target base station according to the measurement result reported by the UE or radio resource management (RRM) information. , or the network may decide to switch the UE to the target base station when the network decides to perform load balancing.
  • RRM radio resource management
  • the handover request carries at least one of the following information: target cell (target cell) ID, UE's cell radio network temporary identifier (C-RNTI), group radio network temporary identifier (G-RNTI), multicast or broadcast Service-related PDU session information (which can also be understood as an identity), QoS flow information, transmission tunnel information, multicast or broadcast identity (indicating that the service is a multicast or broadcast service), etc.
  • target cell target cell
  • C-RNTI UE's cell radio network temporary identifier
  • G-RNTI group radio network temporary identifier
  • multicast or broadcast Service-related PDU session information which can also be understood as an identity
  • QoS flow information which can also be understood as an identity
  • transmission tunnel information indicating that the service is a multicast or broadcast service
  • multicast or broadcast identity indicating that the service is a multicast or broadcast service
  • Step 4 The target base station performs access control on the UE, and if it is accepted, the source base station is notified, and then the source base station sends a handover command to the UE port;
  • Step 5 The source base station performs serial number status transfer (SN status transfer in English) to the target base station, and data forwarding (data forwarding in English);
  • Step 6 The UE detaches from the source base station (expressed as detach in English), and accesses the target base station;
  • the UE accesses the target base station through a random access channel (RACH).
  • RACH random access channel
  • Step 7 The target base station forwards the data packet sent by the source base station to the UE;
  • Step 8 the target base station initiates a path switch (in English can be expressed as a path switch) request to the core network (such as an access and mobility management function (AMF)) to switch the downlink data transmission path to the target base station;
  • a path switch in English can be expressed as a path switch
  • the core network such as an access and mobility management function (AMF)
  • the request may carry a multicast or broadcast service identifier, or a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.), and UE information.
  • a multicast or broadcast service identifier or a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.)
  • UE information may carry a multicast or broadcast service identifier, or a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.), and UE information.
  • Step 9 When the core network element (such as one of AMF, Session Management Function (SMF) and UPF) directly or indirectly receives the path switching request from the target base station, establishes a link between the source base station and the core network for the handed UE.
  • the unicast transmission channel that is, the exclusive transmission channel;
  • the unicast transmission channel can be characterized by the unicast QoS flow.
  • the two QoS flows may belong to the same or different PDU sessions.
  • Two QoS flows may share the same or use different transport tunnels.
  • the unicast transmission channel can also be represented by other information.
  • the unicast transmission channel may also refer to a separate PDU session, or a separate transmission tunnel. Either way, the newly established unicast transmission channel is associated with multicast or At least one of the following information of the broadcast service has a certain binding relationship:
  • step 7 and step 8 may be in no particular order.
  • AMF when AMF receives a path switching request, AMF sends a corresponding PDU session establishment request to SMF, and then SMF feeds back the relevant context to AMF as a response identifier; then SMF establishes a unicast transmission channel.
  • the SMF When the SMF receives a path switching request, the SMF directly establishes a unicast transmission channel.
  • the UPF When the UPF receives the path switching request, the UPF instructs the SMF to establish a unicast transmission channel; the SMF establishes the unicast transmission channel after receiving the instruction.
  • Step 10 UPF sends multiple end marker packets to the source base station through the established unicast transmission channel, and the source base station forwards the received multiple end marker packets to the target base station;
  • Step 11 After receiving the end marker, the target base station receives the data packets of multicast or broadcast service from UPF;
  • Step 12 The target base station receives the path switching confirmation of the AMF, and notifies the source base station to release the UE context.
  • the target base station after receiving the end marker or directly receiving the data packet from the UPF, the target base station can send indication information (ie, the third indication information) to the core network, and the core network releases the unicast between the source base station and the core network. transmission channel.
  • indication information ie, the third indication information
  • the source base station triggers the establishment of a UE-specific transmission channel between the source base station and the core network element during the handover process.
  • Step 1 The UE requests a multicast or broadcast service, that is, sends a multicast or broadcast service application to the core network. After the core network side identifies the multicast or broadcast service applied for by the UE, it establishes the corresponding PDUs required for multicast transmission for the UE session, QoS flow, transmission tunnel, etc., that is, to establish a multicast transmission channel for the UE.
  • Step 2 In the process of receiving the multicast or broadcast service, the UE performs measurement and reports the measurement result according to the configuration on the network side;
  • Step 3 the source base station decides to switch the UE to the target base station, and the source base station sends a handover request to the target base station;
  • the source base station may decide to switch the UE to the target base station for many reasons. For example, the source base station may decide to switch the UE to the target base station according to the measurement result or RRM information reported by the UE, or the network may decide to switch the UE to the target base station. When doing load balancing, it is decided to switch the UE to the target base station, etc.
  • the handover request carries at least one of the following information: target cell ID, UE's C-RNTI, G-RNTI, multicast or broadcast service-related PDU session information (can also be understood as identification), QoS flow information, transmission Tunnel information, multicast or broadcast identification (indicating that the service is a multicast or broadcast service), etc.
  • Step 4 The target base station performs access control on the UE, and if it is accepted, the source base station is notified, and then the source base station sends a handover command to the UE;
  • Step 5 The source base station sends corresponding indication information, that is, the first indication information, to the core network element (which may be one of AMF, SMF and UPF), which is used to instruct the establishment of a unicast transmission channel between the source base station and the core network, That is, the exclusive transmission channel;
  • the core network element which may be one of AMF, SMF and UPF
  • the source base station sends indication information to the AMF, and after receiving the indication information, the AMF instructs the UPF to establish a channel with the source base station, or the source base station directly instructs the UPF.
  • the indication information sent by the source base station to the core network element should at least include QoS flow information of multicast or broadcast services (such as QoS flow identifier (QFI)) and UE identification information, and may also include other multicast transmission channels Information, such as one or more of the corresponding PDU session identifier and tunnel information (N3/N9 tunnel) identifier.
  • QFI QoS flow identifier
  • a unicast transmission channel can be characterized by a unicast QoS flow.
  • the two QoS flows may belong to the same or different PDU sessions, and the two QoS flows may belong to the same or different PDU sessions. Flows may share the same or different transport tunnels.
  • the unicast transmission channel can also be represented by other information.
  • the unicast transmission channel may also refer to a separate PDU session, or a separate transmission tunnel. Either way, the newly established unicast transmission channel is associated with multicast or At least one of the following information of the broadcast service has a certain binding relationship:
  • this step may also occur after the source base station decides to handover the UE (possibly before or after sending a handover request to the target base station), or after the target base station decides the UE to be handed over (possibly after the source base station decides to handover the UE).
  • the base station feeds back the handover confirmation before or after).
  • the process of establishing the unicast transmission channel may be parallel to the subsequent steps.
  • Step 6 The source base station transmits the serial number status to the target base station, and forwards the data
  • Step 7 The UE detaches from the source base station (expressed as detach in English), and accesses the target base station;
  • the UE accesses the target base station through the RACH.
  • Step 8 The target base station forwards the data packet sent by the source base station to the UE;
  • Step 9 the target base station initiates a path switching request to the core network (such as AMF) to switch the downlink data transmission path to the target base station;
  • the core network such as AMF
  • the request may carry a multicast or broadcast service identifier, or a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.), and UE information.
  • a multicast or broadcast service identifier or a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.)
  • UE information may carry a multicast or broadcast service identifier, or a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.), and UE information.
  • Step 10 UPF sends multiple end marker packets to the source base station through the established unicast transmission channel, and the source base station forwards the received multiple end marker packets to the target base station;
  • Step 11 After receiving the end marker, the target base station receives the data packets of multicast or broadcast service from UPF;
  • Step 12 The target base station receives the path switching confirmation of the AMF, and notifies the source base station to release the UE context.
  • the target base station after receiving the end marker or directly receiving the data packet from the UPF, the target base station can send indication information (ie, the third indication information) to the core network, and the core network releases the unicast between the source base station and the core network. transmission channel.
  • indication information ie, the third indication information
  • the target base station triggers the establishment of a UE-specific transmission channel between the source base station and the core network element during the handover process.
  • Step 1 The UE requests a multicast or broadcast service, that is, sends a multicast or broadcast service application to the core network. After the core network side identifies the multicast or broadcast service applied for by the UE, it establishes the corresponding PDUs required for multicast transmission for the UE session, QoS flow, transmission tunnel, etc., that is, to establish a multicast transmission channel for the UE.
  • Step 2 In the process of receiving the multicast or broadcast service, the UE performs measurement and reports the measurement result according to the configuration on the network side;
  • Step 3 the source base station decides to switch the UE to the target base station, and the source base station sends a handover request to the target base station;
  • the source base station may decide to switch the UE to the target base station for many reasons. For example, the source base station may decide to switch the UE to the target base station according to the measurement result or RRM information reported by the UE, or the network may decide to switch the UE to the target base station. When doing load balancing, it is decided to switch the UE to the target base station, etc.
  • the handover request carries at least one of the following information: target cell ID, UE's C-RNTI, G-RNTI, multicast or broadcast service-related PDU session information (can also be understood as an identifier), QoS flow information, transmission Tunnel information, multicast or broadcast identification (indicating that the service is a multicast or broadcast service), etc.
  • Step 4 The target base station performs access control on the UE, and if it is accepted, the source base station is notified, and then the source base station sends a handover command to the UE;
  • Step 5 the source base station transmits the serial number status to the target base station and forwards the data
  • Step 6 The source base station sends corresponding indication information, that is, the second indication information, to the core network element (which may be one of AMF, SMF and UPF), which is used to instruct the establishment of a unicast transmission channel between the source base station and the core network, That is, the exclusive transmission channel;
  • the core network element which may be one of AMF, SMF and UPF
  • the target base station sends indication information to the AMF, and after receiving the indication information, the AMF instructs the UPF to establish a channel with the source base station, or the target base station directly instructs the UPF.
  • the indication information sent by the target base station to the core network element should at least include the QoS flow information (such as QFI) of the multicast or broadcast service, and the UE identification information, and may also include other multicast transmission channel information, such as the corresponding PDU.
  • QoS flow information such as QFI
  • UE identification information may also include other multicast transmission channel information, such as the corresponding PDU.
  • session identifier and tunnel information N3/N9 tunnel
  • a unicast transmission channel can be characterized by a unicast QoS flow.
  • the two QoS flows may belong to the same or different PDU sessions, and the two QoS flows may belong to the same or different PDU sessions.
  • Flows can share the same transport tunnel or use different transport tunnels. It can also be characterized by other information, for example, the unicast transmission channel may also refer to a separate PDU session, or a separate transmission tunnel, etc. Either way, the newly established unicast transmission channel is related to the following of multicast or broadcast services. At least one of the messages has a certain binding relationship:
  • this step may also occur after the target base station receives the handover request from the source base station (it may be before or after sending the handover request to the target base station), or it may also occur after the target base station receives the sequence number status sent by the source base station. and after forwarding the data.
  • the process of establishing the unicast transmission channel may be parallel to the subsequent steps.
  • Step 7 The UE detaches from the source base station and accesses the target base station;
  • the UE accesses the target base station through the RACH.
  • Step 8 The target base station forwards the data packet sent by the source base station to the UE;
  • Step 9 the target base station initiates a path switching request to the core network (such as AMF) to switch the downlink data transmission path to the target base station;
  • the core network such as AMF
  • the request may carry a multicast or broadcast service identifier or a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.), and UE information.
  • QoS flow a multicast or broadcast service identifier or a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.)
  • UE information a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.), and UE information.
  • Step 10 UPF sends multiple end marker packets to the source base station through the established unicast transmission channel, and the source base station forwards the received multiple end marker packets to the target base station;
  • Step 11 After receiving the end marker, the target base station receives the data packets of multicast or broadcast service from UPF;
  • Step 12 The target base station receives the path switching confirmation of the AMF, and notifies the source base station to release the UE context.
  • the target base station after receiving the end marker packet or directly receiving the data packet from the UPF, the target base station can send indication information (ie, the third indication information) to the core network, and the core network releases the single link between the source base station and the core network. broadcast transmission channel.
  • indication information ie, the third indication information
  • the process for the UE to receive multicast or broadcast services mainly includes:
  • Step 501 perform multicast advertisement (expressed as Multicast Announcement in English), so that UE can select multicast or broadcast service;
  • Step 502 After the UE selects the multicast or broadcast service, it performs registration, that is, applies for the multicast or broadcast service, and establishes a PDU session;
  • Step 503 UE joins multicast or broadcast service
  • Step 504 establish a tunnel between the base station (radio access network (RAN) side) and the core network to obtain the binding relationship between the UE and the multicast or broadcast service;
  • RAN radio access network
  • steps 501 to 504 are equivalent to step 1 in the first to third application embodiments.
  • Step 505 Perform multicast or broadcast service data transmission
  • the transmission mode may be a point-to-point (PTP) mode or a point-to-multiple (PTM) mode.
  • PTP point-to-point
  • PTM point-to-multiple
  • Step 506 the UE performs measurement reporting
  • Step 507 The source base station decides to handover the UE to the target base station;
  • Step 508 Established in the handover process, the source base station realizes data forwarding, and establishes a unicast transmission channel;
  • Step 509 UPF sends the end marker packet to the source base station through the unicast transmission channel, and then the source base station sends the received end marker packet to the target base station;
  • Step 510 After receiving the end marker packet, the target base station receives the data of the multicast or broadcast service from the UPF.
  • the establishment of a UE-specific unicast transmission channel is triggered in the handover process of the UE, and is established only when needed, in a flexible and dynamic manner, and established on demand.
  • the method of establishing a unicast transmission channel triggered by the core network does not need to add additional signaling interaction. Since the RAN side triggers the establishment of the unicast transmission channel, since it is required, the unicast transmission channel can be established as soon as possible during implementation to avoid increasing the handover delay due to the establishment of the transmission channel.
  • a UE-specific transmission channel between the source base station and the core network element is simultaneously established.
  • Step 1 The UE requests a multicast or broadcast service, that is, sends a multicast or broadcast service application to the core network.
  • the core network side After the core network side identifies the multicast or broadcast service applied for by the UE, it establishes the corresponding PDUs required for multicast transmission for the UE session, QoS flow, transmission tunnel, etc., that is, to establish a multicast transmission channel for the UE; at the same time, to establish a unicast transmission communication between the source base station and the core network element, that is, to share the transmission channel;
  • unicast and multicast or broadcast services establish a QoS flow respectively, that is, unicast transmission channels can be characterized by unicast QoS flow, multicast or broadcast service QoS flow is shared by multiple UEs, and unicast QoS flow is dedicated to UE , there is a certain binding relationship between the QoS flow of the multicast or broadcast service and the unicast QoS flow.
  • the two QoS flows may belong to the same or different PDU sessions, and the two QoS flows may share the same or use different transmission tunnels (such as N3 tunnels).
  • the network can also configure whether the unicast QoS flow is used for data transmission of other unicast services.
  • the unicast transmission channel can also be characterized by other information, for example, it may refer to a single PDU session, or a single transmission tunnel, etc. Either way, the newly established unicast transmission channel and the following information of multicast or broadcast services At least one of them has a certain binding relationship:
  • Step 2 In the process of receiving the multicast or broadcast service, the UE performs measurement and reports the measurement result according to the configuration on the network side;
  • Step 3 the source base station decides to switch the UE to the target base station, and the source base station sends a handover request to the target base station;
  • the source base station may decide to switch the UE to the target base station for many reasons. For example, the source base station may decide to switch the UE to the target base station according to the measurement result or RRM information reported by the UE, or the network may decide to switch the UE to the target base station. When doing load balancing, it is decided to switch the UE to the target base station, etc.
  • the handover request carries at least one of the following information: target cell ID, UE's C-RNTI, G-RNTI, multicast or broadcast service-related PDU session information (can also be understood as an identifier), QoS flow information, transmission Tunnel information, multicast or broadcast identification (indicating that the service is a multicast or broadcast service), etc.
  • Step 4 The target base station performs access control on the UE, and if it is accepted, the source base station is notified, and then the source base station sends a handover command to the UE;
  • Step 5 the source base station transmits the serial number status to the target base station and forwards the data
  • Step 6 The UE detaches from the source base station and accesses the target base station;
  • the UE accesses the target base station through the RACH.
  • Step 7 The target base station forwards the data packet sent by the source base station to the UE;
  • Step 8 the target base station initiates a path switching request to the core network (such as AMF) to switch the downlink data transmission path to the target base station;
  • the core network such as AMF
  • the request may carry a multicast or broadcast service identifier, or a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.), and UE information.
  • a multicast or broadcast service identifier or a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.)
  • UE information may carry a multicast or broadcast service identifier, or a multicast transmission identifier (QoS flow, PDU Session, or tunnel information, etc.), and UE information.
  • Step 9 UPF sends multiple end marker packets to the source base station through the established unicast transmission channel, and the source base station forwards the received multiple end marker packets to the target base station;
  • Step 10 After receiving the end marker, the target base station receives the data packet of multicast or broadcast service from UPF;
  • Step 11 The target base station receives the path switching confirmation of the AMF, and notifies the source base station to release the UE context.
  • the target base station after receiving the end marker packet or directly receiving the data packet from the UPF, the target base station can send indication information (ie, the third indication information) to the core network, and the core network releases the single link between the source base station and the core network. broadcast transmission channel.
  • indication information ie, the third indication information
  • the corresponding unicast transmission channel is established when the UE starts to receive the multicast or broadcast service, so that it can be always available.
  • the establishment process of the unicast transmission channel can be implemented in the following manner:
  • SMF will interact with the unified data management platform (UDM) to complete the registration of related PDU sessions and obtain necessary data); then, SMF will perform PCF selection and N4 session establishment (interacting with UPF); finally, SMF sends N1,
  • the N2 message (Namf_Communication_N1N2MessageTransfer) is sent to the AMF, which contains the information sent to the UE (such as the QoS rule of the UE (used when classifying uplink data), the IP allocated to the UE, etc.), and the information that needs to be provided to the base station.
  • UPF tunnel address and tunnel endpoint identifier (TEID) realize the opening of N3 tunnel, and establish QoS flow (or realize binding with PDU session).
  • the network-triggered PDU session modification process in the related art may be adopted.
  • the solution of the embodiment of the present application sends the end marker packet for switching the multicast or broadcast service of the UE through the unicast channel between the core network and the RAN (source base station) side, so that the target base station can know the Multicast or broadcast service end identifier, that is, to know the timing of receiving multicast or broadcast service data from core network equipment, so as to realize the continuous and orderly transmission of multicast or broadcast service by the target base station, and realize the UE receiving multicast service.
  • the embodiment of the present application further provides an information transmission device, which is set in the core network device. As shown in FIG. 6 , the device includes:
  • the first transmission unit 602 is configured to send a multicast or broadcast service end identifier to the source base station; the sent multicast or broadcast service end identifier is used for the target base station to determine to receive the multicast or broadcast service data from the core network device The timing of the transmission; wherein, a multicast or broadcast transmission channel for transmitting the multicast or broadcast service data is also established between the core network device and the source base station; the multicast or broadcast service is received by the switched terminal, That is, the terminal receives the multicast or broadcast service and switches.
  • the device may further include:
  • the first determining unit 601 is configured to determine that a terminal receiving a multicast or broadcast service performs cell handover.
  • the first transmission unit 602 is configured as:
  • the first transmission unit 602 is further configured to:
  • the first indication information sent by the source base station is received to trigger establishment of the dedicated channel; the first indication information is used to instruct the establishment of the dedicated channel. the dedicated channel.
  • the first transmission unit 602 is further configured to:
  • the target base station In the case that the establishment of the dedicated channel is triggered by the target base station, receive second indication information sent by the target base station to trigger establishment of the dedicated channel; the second indication information is used to instruct the establishment of the dedicated channel. the dedicated channel.
  • the first transmission unit 602 is further configured to:
  • the core network device In the case that the establishment of the dedicated channel is triggered by the core network device, receive a path switching request sent by the target base station to trigger establishment of the dedicated channel; the path switching request is used to request The core network device acquires the data of the multicast or broadcast service.
  • the first transmission unit 602 is further configured to:
  • the dedicated channel When the dedicated channel is established when a multicast session corresponding to the multicast or broadcast service is established, receive the multicast or broadcast service application sent by the terminal to trigger establishment of the dedicated channel .
  • the first determining unit 601 is configured to:
  • a path switching request sent by the target base station is received; the path switching request is used for requesting to acquire the data of the multicast or broadcast service from the core network device.
  • the device may further comprise: a releasing unit; wherein,
  • the first transmission unit 602 is further configured to:
  • the third indication information is used to instruct to release the resources of the dedicated channel
  • the releasing unit is configured to release the resources of the dedicated channel based on the third indication information.
  • the first transmission unit 602 is configured as:
  • the first determining unit 601 and the releasing unit may be implemented by a processor in the information transmission device; the first transmission unit 602 may be implemented by a communication interface in the information transmission device.
  • the embodiment of the present application further provides an information transmission apparatus, which is set on the source base station.
  • the apparatus includes:
  • the second transmission unit 702 is configured to receive the multicast or broadcast service end identifier sent by the core network equipment; and send the received multicast or broadcast service end identifier to the target base station; the sent multicast or broadcast service end identifier is used for for the target base station to determine the opportunity to receive the multicast or broadcast service data from the core network device; wherein, a transmission of the multicast or broadcast service is also established between the core network device and the source base station.
  • the multicast or broadcast transmission channel of data; the multicast or broadcast service is received by the switching terminal, that is, the terminal receives the multicast or broadcast service and switches.
  • the device may further include:
  • the second determining unit 701 is configured to determine that a terminal receiving a multicast or broadcast service performs cell handover.
  • the second transmission unit 702 is configured to receive the multicast or broadcast service end identifier sent by the core network device through the dedicated channel of the terminal established with the core network.
  • the second transmission unit 702 is further configured to:
  • first indication information is sent to the core network device to trigger establishment of the dedicated channel; the first indication information is used to instruct the establishment of the dedicated channel share the channel.
  • the second transmission unit 702 is configured as:
  • the second determining unit 701 and the releasing unit may be implemented by a processor in the information transmission device; the second transmission unit 702 may be implemented by a communication interface in the information transmission device.
  • the embodiment of the present application further provides an information transmission apparatus, which is set on the target base station.
  • the apparatus includes:
  • the third transmission unit 802 is configured to receive the multicast or broadcast service end identifier sent by the source base station; the received multicast or broadcast service end identifier is used for the target base station to determine whether to receive the multicast or broadcast service from the core network device.
  • Opportunity to broadcast service data wherein, a multicast transmission channel for transmitting the multicast or broadcast service data is also established between the core network device and the source base station; the multicast or broadcast service is received by the switched terminal , that is, the terminal receives the multicast or broadcast service and performs handover; the multicast or broadcast service end identifier sent by the source base station is received from the core network device.
  • the device may further include:
  • the third determining unit 801 is configured to determine that a terminal receiving a multicast or broadcast service performs cell handover.
  • the third transmission unit 802 is further configured to:
  • second indication information is sent to the core network device to trigger establishment of the dedicated channel; the second indication information is used to instruct the establishment of the dedicated channel share the channel.
  • the third transmission unit 802 is further configured to:
  • the third indication information is used to instruct to release the resources of the dedicated channel.
  • the third transmission unit 802 is configured as:
  • the multicast or broadcast service data is received from the core network, and third indication information is sent to the core network device.
  • the third transmission unit 802 is configured as:
  • the third determining unit 801 and the releasing unit may be implemented by a processor in the information transmission device; the third transmission unit 802 may be implemented by a communication interface in the information transmission device.
  • the information transmission device provided in the above embodiment performs information transmission
  • only the division of the above-mentioned program modules is used as an example for illustration.
  • the above-mentioned processing can be allocated according to needs. That is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above.
  • the information transmission apparatus and the information transmission method embodiments provided by the above embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiments, which will not be repeated here.
  • the embodiments of the present application further provide a core network device.
  • the core network device 900 includes:
  • a first communication interface 901 capable of performing information exchange with the source base station and the target base station;
  • the first processor 902 is connected to the first communication interface 901 to realize information exchange with the source base station and the target base station, and is configured to execute the method provided by one or more technical solutions on the core network device side when running a computer program .
  • the computer program is stored on the first memory 903 .
  • the first communication interface 901 is configured to send a multicast or broadcast service end identifier to the source base station; the sent multicast or broadcast service end identifier is used for the target base station to determine to receive the multicast or broadcast service end identifier from the core network device. the opportunity to broadcast or broadcast service data; wherein, a multicast or broadcast transmission channel for transmitting the multicast or broadcast service data is also established between the core network device and the source base station; the multicast or broadcast service is The switching terminal receives, that is, the terminal receives the multicast or broadcast service and performs switching.
  • the first processor 902 is configured to determine that a terminal receiving a multicast or broadcast service performs cell handover.
  • the first communication interface 901 is configured as:
  • the first communication interface 901 is further configured as:
  • the first indication information sent by the source base station is received to trigger establishment of the dedicated channel; the first indication information is used to instruct the establishment of the dedicated channel. the dedicated channel.
  • the first communication interface 901 is further configured as:
  • the target base station In the case that the establishment of the dedicated channel is triggered by the target base station, receive second indication information sent by the target base station to trigger establishment of the dedicated channel; the second indication information is used to instruct the establishment of the dedicated channel. the dedicated channel.
  • the first communication interface 901 is further configured as:
  • the core network device In the case that the establishment of the dedicated channel is triggered by the core network device, receive a path switching request sent by the target base station to trigger establishment of the dedicated channel; the path switching request is used to request The core network device acquires the data of the multicast or broadcast service.
  • the first communication interface 901 is further configured as:
  • the dedicated channel When the dedicated channel is established when a multicast session corresponding to the multicast or broadcast service is established, receive the multicast or broadcast service application sent by the terminal to trigger establishment of the dedicated channel .
  • the first processor 902 is configured to:
  • a path switching request sent by the target base station is received; the path switching request is used to request to acquire the data of the multicast or broadcast service from the core network device.
  • the device may further comprise: a releasing unit; wherein,
  • the first communication interface 901 is further configured as:
  • the third indication information is used to instruct to release the resources of the dedicated channel
  • the releasing unit is configured to release the resources of the dedicated channel based on the third indication information.
  • the first communication interface 901 is configured as:
  • bus system 904 is configured to enable connection communication between these components.
  • the bus system 904 also includes a power bus, a control bus and a status signal bus.
  • the various buses are labeled as bus system 904 in FIG. 9 .
  • the first memory 903 in this embodiment of the present application is configured to store various types of data to support the operation of the core network device 900 .
  • Examples of such data include: any computer program used to operate on core network equipment 900 .
  • the methods disclosed in the above embodiments of the present application may be applied to the first processor 902 or implemented by the first processor 902 .
  • the first processor 902 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the first processor 902 or an instruction in the form of software.
  • the above-mentioned first processor 902 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the first processor 902 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of this application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the first memory 903, and the first processor 902 reads the information in the first memory 903, and completes the steps of the foregoing method in combination with its hardware.
  • the core network device 900 may be configured by one or more Application Specific Integrated Circuits (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), Field Programmable Gate Array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other An electronic component implementation is configured to perform the aforementioned method.
  • ASIC Application Specific Integrated Circuit
  • DSP Programmable Logic Device
  • PLD Programmable Logic Device
  • CPLD Complex Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • MCU microcontroller
  • Microcontroller Micro Controller Unit
  • Microprocessor Microprocessor
  • the embodiment of the present application further provides a source base station.
  • the source base station 1000 includes:
  • the second communication interface 1001 is capable of information exchange with the core network device and the target base station;
  • the second processor 1002 is connected to the second communication interface 1001 to realize information exchange with the core network equipment and the target base station, and is configured to execute the method provided by one or more technical solutions on the source base station side when running the computer program .
  • the computer program is stored on the second memory 1003 .
  • the second communication interface 1001 is configured to receive a multicast or broadcast service end identifier sent by a core network device; and to send the received multicast or broadcast service end identifier to the target base station; the sent multicast or broadcast service end identifier
  • the broadcast service end identifier is used for the target base station to determine the opportunity to receive the multicast or broadcast service data from the core network device; wherein, the core network device and the source base station are also established to transmit the A multicast or broadcast transmission channel for multicast or broadcast service data; the multicast or broadcast service is received by the switching terminal, that is, the terminal receives the multicast or broadcast service and performs switching.
  • the second processor 1002 is configured to determine that a terminal receiving a multicast or broadcast service performs cell handover.
  • the second communication interface 1001 is configured to receive a multicast or broadcast service end identifier sent by a core network device through a dedicated channel of the terminal established with the core network.
  • the second communication interface 1001 is further configured as:
  • first indication information is sent to the core network device to trigger establishment of the dedicated channel; the first indication information is used to instruct the establishment of the dedicated channel share the channel.
  • the second communication interface 1001 is configured as:
  • bus system 1004 is configured to enable connection communication between these components.
  • bus system 1004 also includes a power bus, a control bus, and a status signal bus.
  • the various buses are labeled as bus system 1004 in FIG. 10 .
  • the second memory 1003 in this embodiment of the present application is configured to store various types of data to support the operation of the source base station 1000 .
  • Examples of such data include: any computer program for operation on the source base station 1000.
  • the methods disclosed in the above embodiments of the present application may be applied to the second processor 1002 or implemented by the second processor 1002 .
  • the second processor 1002 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the second processor 1002 or an instruction in the form of software.
  • the above-mentioned second processor 1002 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the second processor 1002 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of this application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the methods disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the second memory 1003, the second processor 1002 reads the information in the second memory 1003, and completes the steps of the foregoing method in combination with its hardware.
  • the source base station 1000 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, Microprocessors, or other electronic components configured to perform the aforementioned methods.
  • the embodiment of the present application further provides a target base station.
  • the target base station 1100 includes:
  • the third communication interface 1101 is capable of information exchange with the source base station and core network equipment
  • the third processor 1102 is connected to the third communication interface 1101 to realize information exchange with the source base station and core network equipment, and is configured to execute the method provided by one or more technical solutions on the target base station side when running the computer program . And the computer program is stored on the third memory 1103 .
  • the third communication interface 1101 is configured to receive the multicast or broadcast service end identifier sent by the source base station; the received multicast or broadcast service end identifier is used for the target base station to determine to receive from the core network device the opportunity of the multicast or broadcast service data; wherein, a multicast transmission channel for transmitting the multicast or broadcast service data is also established between the core network device and the source base station; the multicast or broadcast service The terminal to be switched receives, that is, the terminal receives the multicast or broadcast service and performs switching; the multicast or broadcast service end identifier sent by the source base station is received from the core network device.
  • the third processor 1102 is configured to determine that a terminal receiving a multicast or broadcast service performs cell handover.
  • the third communication interface 1101 is further configured as:
  • second indication information is sent to the core network device to trigger establishment of the dedicated channel; the second indication information is used to instruct the establishment of the dedicated channel share the channel.
  • the third communication interface 1101 is further configured as:
  • the third indication information is used to instruct to release the resources of the dedicated channel.
  • the third communication interface 1101 is configured as:
  • the multicast or broadcast service data is received from the core network, and third indication information is sent to the core network device.
  • the third communication interface 1101 is configured as:
  • bus system 1104 is configured to enable connection communication between these components.
  • bus system 1104 also includes a power bus, a control bus, and a status signal bus.
  • the various buses are labeled as bus system 1104 in FIG. 11 .
  • the third memory 1103 in this embodiment of the present application is configured to store various types of data to support the operation of the target base station 1100 .
  • Examples of such data include: any computer program used to operate on the target base station 1100 .
  • the methods disclosed in the above embodiments of the present application may be applied to the third processor 1102 or implemented by the third processor 1102 .
  • the third processor 1102 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the third processor 1102 or an instruction in the form of software.
  • the above-mentioned third processor 1102 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the third processor 1102 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of this application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the third memory 1103, and the third processor 1102 reads the information in the third memory 1103, and completes the steps of the foregoing method in combination with its hardware.
  • the target base station 1100 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, Microprocessors, or other electronic components configured to perform the aforementioned methods.
  • the memories may be volatile memories or non-volatile memories, and may also include volatile and non-volatile memories both.
  • the non-volatile memory may be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-only memory) Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory (Flash Memory), Magnetic Surface Memory , CD-ROM, or CD-ROM (Compact Disc Read-Only Memory); magnetic surface memory can be disk memory or tape memory.
  • RAM Random Access Memory
  • SRAM Static Random Access Memory
  • SSRAM Synchronous Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Type Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Link Dynamic Random Access Memory
  • DRRAM Direct Rambus Random Access Memory
  • DRRAM Direct Rambus Random Access Memory
  • the embodiment of the present application further provides an information transmission system, as shown in FIG. 12 , the system includes: a source base station 1201 , a core network device 1202 and a target base station 1203 .
  • an embodiment of the present application further provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 903 for storing a computer program, and the above-mentioned computer program can be stored by a core network device.
  • a storage medium that is, a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 903 for storing a computer program, and the above-mentioned computer program can be stored by a core network device.
  • the 900 is executed by the first processor 902 to complete the steps of the aforementioned method on the device side of the core network; another example includes a second memory 1003 that stores computer programs, and the above computer programs can be executed by the second processor 1002 of the source base station 1000 to complete
  • the steps of the source base station side method include a third memory 1103 storing a computer program, the computer program can be executed by the third processor 1102 of the target base station 1100 to complete the steps of the target base station side method.
  • the computer-readable storage medium may be memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.

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Abstract

本申请公开了一种信息传输方法、装置、核心网设备、源基站、目标基站及存储介质。其中，方法包括：核心网设备向源基站发送多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换。

Description

信息传输方法、装置、相关设备及存储介质
相关申请的交叉引用
本申请基于申请号为202010700463.4、申请日为2020年07月20日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及无线通信领域，尤其涉及一种信息传输方法、装置、相关设备及存储介质。
背景技术
为有效利用移动网络资源，提出了多媒体广播多播业务(MBMS)技术，MBMS技术是一种从一个数据源向多个目标终端传输数据的技术，实现了网络(包括核心网，传输网(传输电信号或光信号的网络)和接入网)资源的共享，提高了网络资源，尤其是空口资源利用率。
然而，相关技术中，MBMS技术不支持多播或广播业务的小区切换。
发明内容
为解决现相关技术问题，本申请实施例提供一种信息传输方法、装置、相关设备及存储介质。
本申请实施例的技术方案是这样实现的：
本申请实施例提供了一种信息传输方法，应用于核心网设备，包括：
向源基站发送多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换。
上述方案中，通过与所述源基站建立的所述终端的专享通道向所述源基站发送多播或广播业务结束标识。
上述方案中，发送的多播或广播业务结束标识用于供目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机。
上述方案中，所述专享通道是在小区切换准备或执行或完成过程中建立的；
或者，
所述专享通道是在所述多播或广播业务对应的多播或广播会话建立时 建立的。
上述方案中，所述专享通道是由以下设备之一触发建立的：
所述源基站；
所述目标基站；
所述核心网设备。
上述方案中，在所述专享通道是由所述源基站触发建立的情况下，所述方法还包括：
接收所述源基站发送的第一指示信息，以触发建立所述专享通道；所述第一指示信息用于指示建立所述专享通道。
上述方案中，在所述专享通道是由所述目标基站触发建立的情况下，所述方法还包括：
接收所述目标基站发送的第二指示信息，以触发建立所述专享通道；所述第二指示信息用于指示建立所述专享通道。
上述方案中，在所述专享通道是由所述核心网设备触发建立的情况下，所述方法还包括：
接收所述目标基站发送的路径切换请求，以触发建立所述专享通道；所述路径切换请求用于请求从所述核心网设备获取所述多播或广播业务的数据。
上述方案中，在所述专享通道是在所述多播或广播业务对应的多播会话建立时建立的情况下，所述方法还包括：
接收所述终端发送的所述多播或广播业务申请，以触发建立所述专享通道。
上述方案中，所述专享通道与所述多播或广播业务的以下相关信息至少之一具有绑定关系：
服务质量流(QoS flow)标识；
数据协议单元会话(PDU session)标识；
传输隧道标识。
上述方案中，所述方法还包括：
确定接收所述多播或广播业务的终端进行小区切换。
上述方案中，所述确定进行多播或广播业务的终端进行小区切换，包括：
接收到所述目标基站发送的路径切换请求；所述路径切换请求配置为请求从所述核心网设备获取所述多播或广播业务的数据。
上述方案中，所述方法还包括：
接收所述目标基站发送的第三指示信息；所述第三指示信息配置为指示释放所述专享通道的资源；
基于所述第三指示信息，释放所述专享通道的资源。
上述方案中，所述向所述源基站发送多播或广播业务结束标识，包括：
向所述源基站发送一个或多个表征多播或广播业务结束标识的包。
本申请实施例还提供了一种信息传输方法，应用于源基站，包括：
接收核心网设备发送的多播或广播业务结束标识；
将接收的多播或广播业务结束标识发送至目标基站；其中，终端接收所述多播或广播业务且进行切换。
上述方案中，通过与核心网建立的所述终端的专享通道接收核心网设备发送的多播或广播业务结束标识。
上述方案中，发送的多播或广播业务结束标识用于供所述目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机。
上述方案中，所述专享通道是在小区切换准备或执行或完成过程中建立的；
或者，
所述专享通道是在所述多播或广播业务对应的多播或广播会话建立时建立的。
上述方案中，所述专享通道是由以下设备之一触发建立的：
所述源基站；
所述目标基站；
所述核心网设备。
上述方案中，在所述专享通道是由所述源基站触发建立的情况下，所述方法还包括：
向核心网设备发送第一指示信息，以触发建立所述专享通道；所述第一指示信息用于指示建立所述专享通道。
上述方案中，所述专享通道与所述多播或广播业务的以下相关信息至少之一具有绑定关系：
QoS flow标识；
PDU session标识；
传输隧道标识。
上述方案中，接收核心网设备发送的一个或多个表征多播或广播业务结束标识的包；
将接收的一个或多个表征多播或广播业务结束标识的包发送至所述目标基站。
本申请实施例还提供了一种信息传输方法，应用于目标基站，包括：
接收源基站发送的多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换。
上述方案中，所述源基站发送的多播或广播业务结束标识是所述源基站通过与核心网设备建立的所述终端共享通道接收的。
上述方案中，接收的多播或广播业务结束标识用于供所述目标基站确定从核心网设备接收所述多播或广播业务数据的时机。
上述方案中，所述专享通道是在小区切换准备或执行或完成过程中建立的；
或者，
所述专享通道是在所述多播或广播业务对应的多播会话建立时建立的。
上述方案中，所述专享通道是由以下设备之一触发建立的：
所述源基站；
所述目标基站；
所述核心网设备。
上述方案中，在所述专享通道是由所述目标基站触发建立的情况下，所述方法还包括：
向核心网设备发送第二指示信息，以触发建立所述专享通道；所述第二指示信息用于指示建立所述专享通道。
上述方案中，所述专享通道与所述多播或广播业务的以下相关信息至少之一具有绑定关系：
QoS flow标识；
PDU session标识；
传输隧道标识。
上述方案中，所述方法还包括：
向所述核心网设备发送第三指示信息；所述第三指示信息用于指示释放所述专享通道的资源。
上述方案中，所述向所述核心网设备发送第三指示信息，包括：
接收到所述源基站发送的多播或广播业务结束标识，向所述核心网设备发送第三指示信息；
或者，
从所述核心网接收到所述多播或广播业务数据，向所述核心网设备发送第三指示信息。
上述方案中，所述接收源基站发送的多播或广播业务结束标识，包括：
接收所述源基站发送的一个或多个表征多播或广播业务结束标识的包。
本申请实施例还提供了一种信息传输装置，包括：
第一传输单元，配置为向源基站发送多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换。
本申请实施例还提供了一种信息传输装置，包括：
第二传输单元，配置为接收核心网设备发送的多播或广播业务结束标识；以及将接收的多播或广播业务结束标识发送至目标基站；其中，终端接收所述多播或广播业务且进行切换。
本申请实施例还提供了一种信息传输装置，包括：
第三传输单元，配置为接收源基站发送的多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换。
本申请实施例还提供了一种核心网设备，包括：第一处理器及第一通信接口；其中，
所述第一通信接口，配置为向源基站发送多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换。
本申请实施例还提供了一种源基站，包括：第二处理器及第二通信接口；其中，
所述第二通信接口，配置为接收核心网设备发送的多播或广播业务结束标识；以及将接收的多播或广播业务结束标识发送至目标基站；其中，终端接收所述多播或广播业务且进行切换。
本申请实施例还提供了一种目标基站，包括：第三处理器及第三通信接口；其中，
所述第三通信接口，配置为接收源基站发送的多播或广播业务结束标识；其终端接收所述多播或广播业务且进行切换。
本申请实施例还提供了一种核心网设备，包括：第一处理器和配置为存储能够在处理器上运行的计算机程序的第一存储器，
其中，所述第一处理器配置为运行所述计算机程序时，执行上述核心网设备侧任一方法的步骤。
本申请实施例还提供了一种源基站，包括：第二处理器和配置为存储能够在处理器上运行的计算机程序的第二存储器，
其中，所述第二处理器配置为运行所述计算机程序时，执行上述源基站侧任一方法的步骤。
本申请实施例还提供了一种目标基站，包括：第三处理器和配置为存储能够在处理器上运行的计算机程序的第三存储器，
其中，所述第三处理器配置为运行所述计算机程序时，执行上述目标基站侧任一方法的步骤。
本申请实施例还提供了一种存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现上述核心网设备侧任一方法的步骤，或者实现上述源基站侧任一方法的步骤，或者实现上述目标基站侧任一方法的步骤。
本申请实施例提供的信息传输方法、装置、相关设备及存储介质，核心网设备向所述源基站发送多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换；而所述源基站接收到所述核心网设备发送的多播或广播业务结束标识后，将接收的多播或广播业务结束标识发送至所述目标基站，通过传输多播或广播业务结束标识，从而使得目标基站能够获知多播或广播业务结束标识，即获知从核心网设备接收多播或广播业务数据的时机，进而实现目标基站对多播或广播业务的连续、有序的发送， 保证了多播或广播业务的连续性。
附图说明
图1为本申请实施例一种信息传输的方法流程示意图；
图2为本申请实施例另一种信息传输的方法流程示意图；
图3为本申请实施例第三种信息传输的方法流程示意图；
图4为本申请实施例第四种信息传输的方法流程示意图；
图5为本申请应用实施例终端接收多播或广播业务的流程示意图；
图6为本申请实施例一种信息传输装置结构示意图；
图7为本申请实施例第二种信息传输装置结构示意图；
图8为本申请实施例第三种信息传输装置结构示意图；
图9为本申请实施例核心网设备结构示意图；
图10为本申请实施例源基站结构示意图；
图11为本申请实施例目标基站结构示意图；
图12为本申请实施例信息传输系统结构示意图。
具体实施方式
下面结合附图及实施例对本申请再作进一步详细的描述。
在第四代移动通信技术(4G)系统中，MBMS技术的使用场景主要是广播电视，公共安全等业务场景，因此MBMS方案的核心思想是将业务本身预定义为广播业务，为了保证覆盖在网络中划分为多个广播区域，在这些区域进行广播，并将这些广播业务具体发送的位置和临时移动组标识(TMGI)告知终端，终端根据自身订阅的情况主动地去对应的位置获取相应的广播内容。具体地，在空口上，支持两种传输方式，一种是多播广播单频网(MBSFN)方式，一种是单小区点对多点(SC-PTM)方式。
从上面的描述可以看出，相关技术中，MBMS技术主要面向的是广播等预定义业务，多播或广播区域是预先规划的，并不考虑业务连续性问题，也不支持多播或广播业务切换流程。
另一方面，第五代移动通信技术(5G)系统中，需要考虑多播或广播业务中，当终端在移动过程中如何保证业务的连续性。因此，当接收多播或广播业务的用户设备(UE)移动到非多播或广播区域时，如何保证源基站下其他接收多播或广播业务的终端继续接收多播或广播业务，而切换的UE能够有序、无丢失、无重复的在目标基站接收该多播或广播业务的数据，是目前亟待解决的问题。
基于此，在本申请的各种实施例中，通过源基站和核心网设备之间建立的切换终端专享的传输通道，来传输多播或广播业务结束标识，从而使得目标基站能够获知多播或广播业务结束标识，即获知从核心网设备接收 多播或广播业务数据的时机，进而实现目标基站对多播或广播业务的连续、有序的发送。
本申请实施例提供一种信息传输方法，应用于核心网设备，如图1所示，该方法包括：
步骤100：确定接收多播或广播业务的终端进行小区切换；
步骤101：向源基站发送多播或广播业务结束标识。
其中，所述核心网设备与所述源基站之间还建立有传输所述多播或广播业务数据的多播或广播传输通道。
发送的多播或广播业务结束标识用于供目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机。
这里，所述多播或广播业务被切换的终端接收，即所述终端接收所述多播或广播业务且进行切换(小区切换)；当然，实际应用时，所述多播或广播业务还可能会被其他终端接收，也就是说，所述多播或广播业务至少被切换的终端接收。
在一实施例中，步骤101中，所述核心网设备可以通过与源基站建立的所述终端的专享通道向所述源基站发送多播或广播业务结束标识。
所述专享通道也可以称为专用(英文可以表达为specific)通道，也可以称为专享传输通道，也可以称为专用传输通道，还可以称为单播通道或单播传输通道，本申请实施例对此不作限定，只要实现所述专享通道的功能即可。
实际应用时，在步骤100中，在切换过程中，所述目标基站会向所述核心网设备发送路径切换请求，以请求下行数据传输路径切换至所述目标基站，即此时，所述核心网设备就会获知所述终端进行小区切换。
基于此，在一实施例中，所述核心网设备接收到所述目标基站发送的路径切换请求，即确定接收所述终端进行小区切换；所述路径切换请求用于请求从所述核心网设备获取所述多播或广播业务的数据。
实际应用时，由于终端需要进行小区切换，所以可以在小区切换过程(包括切换准备、切换执行和切换完成过程)中建立所述专享通道，即所述专享通道是在小区切换过程中建立的，在需要时建立所述共享通道，即按需建立所述共享通道，如此，实现方式灵活，不会造成资源浪费。
其中，实际应用时，切换准备过程可以包括：终端接收多播或广播业务数据、进行测量上报、源基站进行切换决策、源基站与目标基站进行信息交互以确定进行小区切换等步骤。
切换执行过程可以包括：终端收到切换命令开始切换、同步到新小区、将相关信息(序列号状态(英文表达SN status)，数据(英文表达为data，包含本地缓存的和从核心网接收的新数据))发送给目标基站，以便目标基站缓存这些信息等步骤。
切换完成过程可以包括：终端完成小区切换、目标基站向核心网发送 路径切换请求及后续步骤。
当然也可以在建立多播或广播会话时，就建立所述专享通道，即所述专享通道是在所述多播或广播业务对应的多播或广播会话建立时建立的，由于是在终端开始接收所述多播或广播业务时就建立了所述共享通道，所以能够确保时时可用。
其中，可以由所述源基站触发建立所述专享通道；具体地，所述源基站可以向所述核心网设备发送一个指示信息(在小区切换过程中发送)，用于指示建立所述专享通道。
基于此，在一实施例中，在所述专享通道是由所述源基站触发建立的情况下，该方法还可以包括：
接收所述源基站发送的第一指示信息，以触发建立所述专享通道；所述第一指示信息用于指示建立所述专享通道。
所述专享通道也可以由所述目标基站触发建立所述专享通道；具体地，所述目标基站可以向所述核心网设备发送一个指示信息(在小区切换过程中发送)，用于指示建立所述专享通道。
基于此，在一实施例中，在所述专享通道是在小区切换过程中由所述目标基站触发建立的情况下，该方法还可以包括：
小区切换过程中接收所述目标基站发送的第二指示信息，以触发建立所述专享通道；所述第二指示信息用于指示建立所述专享通道。
所述专享通道也可以由所述核心网设备触发建立所述专享通道；具体地，所述核心网设备可以在收到所述目标基站发送的路径切换请求(在小区切换过程中)后触发建立所述专享通道。
基于此，在一实施例中，在所述专享通道是由所述核心网设备触发建立的情况下，该方法还可以包括：
接收所述目标基站发送的路径切换请求，以触发建立所述专享通道；所述路径切换请求用于请求从所述核心网设备获取所述多播或广播业务的数据。
实际应用时，当建立多播或广播会话时建立所述专享通道时，可以在所述终端申请所述多播或广播业务时触发建立所述共享通道。
基于此，在一实施例中，在所述专享通道是在所述多播或广播业务对应的多播会话建立时建立的情况下，该方法还可以包括：
接收所述终端发送的所述多播或广播业务申请，以触发建立所述专享通道。
实际应用时，所述多播或广播传输通道可以用多播或广播业务专用的PDU session来表征，也可以通过多播或广播业务专用的PDU session中的QoS flow来表征，还可以是基站(比如gNB)与核心网设备之间的通用无线分组业务隧道协议(GTP)隧道(英文表达为tunnel)(具体为N3tunnel)来表征，还可以与某个单播业务相同PDU session中的多播业务单独的QoS  flow来表征。
基于此，在一实施例中，所述专享通道与所述多播或广播业务的以下相关信息至少之一具有绑定关系：
QoS flow标识；
PDU session标识；
传输隧道标识。
其中，传输隧道是指GTP隧道，具体可以是N3tunnel。
实际应用时，所述核心网设备可以包括用户面功能(UPF)实体或SMF，当然，在建立所述专享通道的过程中需要多个核心网设备(比如AMF、SMF、UPF)进行信息交互。
当所述核心网设备确定所述终端进行小区切换后，就会通过所述专享通道向所述源基站发送所述多播或广播业务结束标识(英文可以表达为end marker)；具体地，可以发送一个或多个表征多播或广播业务结束标识的包，以便所述目标基站能够获知所述源基站发送的数据包已经结束，接着需要从所述核心网设备获取所述多播或广播业务数据包。
实际应用时，当所述目标基站接收到多播或广播业务结束标识，且从所述核心网设备获取到所述多播或广播业务数据时，此时所述终端已经实现了小区切换，且保证了多播或广播业务的连续性，所述目标基站就可以通知所述核心网设备释放所述专享通道的资源，以节省资源。
基于此，在一实施例中，该方法还可以包括：
接收所述目标基站发送的第三指示信息；所述第三指示信息用于指示释放所述专享通道的资源；
基于所述第三指示信息，释放所述专享通道的资源。
相应地，本申请实施例还提供了一种信息传输方法，应用于源基站，如图2所示，该方法包括：
步骤200：确定接收多播或广播业务的终端进行小区切换；
步骤201：接收核心网设备发送的多播或广播业务结束标识；
步骤202：将接收的多播或广播业务结束标识发送至所述目标基站。
其中，终端接收所述多播或广播业务且进行切换。
发送的多播或广播业务结束标识用于供所述目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机；所述核心网设备与所述源基站之间还建立有传输所述多播或广播业务数据的多播或广播传输通道。
实际应用时，在步骤200中，当所述源基站接收到所述目标基站发送的切换请求确认后，确定所述终端进行小区切换。
在一实施例中，在步骤201中，所述源基站通过与核心网建立的所述终端的专享通道接收核心网设备发送的多播或广播业务结束标识。
这里，在一实施例中，在所述专享通道是由所述源基站触发建立的情况下，该方法还可以包括：
向核心网设备发送第一指示信息，以触发建立所述专享通道；所述第一指示信息用于指示建立所述专享通道。
在一实施例中，接收核心网设备发送的一个或多个表征多播或广播业务结束标识的包；
将接收的一个或多个表征多播或广播业务结束标识的包发送至所述目标基站。
实际应用时，在步骤202中，所述源基站接收到核心网设备发送的多播或广播业务结束标识后，可以不立即发送给目标基站，比如将本地缓存的数据转发给所述目标基站后再发给目标基站。
相应地，本申请实施例还提供了一种信息传输方法，应用于目标基站，如图3所示，该方法包括：
步骤300：确定接收多播或广播业务的终端进行小区切换；
步骤301：接收源基站发送的多播或广播业务结束标识。
其中，接收的多播或广播业务结束标识用于供所述目标基站确定从核心网设备接收所述多播或广播业务数据的时机。
这里，所述核心网设备与所述源基站之间还建立有传输所述多播或广播业务数据的多播传输通道；所述源基站发送的多播或广播业务结束标识是所述源基站通过与核心网设备建立的所述终端共享通道接收的。
其中，在步骤300中，当所述目标接站接收到所述源基站发送的切换请求，且自身完成接入控制操作后，确定所述终端进行小区切换。
在一实施例中，在所述专享通道是由所述目标基站触发建立的情况下，该方法还可以包括：
向核心网设备发送第二指示信息，以触发建立所述专享通道；所述第二指示信息用于指示建立所述专享通道。
实际应用时，在步骤301中，所述目标基站可以接收所述源基站发送的一个或多个表征多播或广播业务结束标识的包。
在一实施例中，该方法还可以包括：
向所述核心网设备发送第三指示信息；所述第三指示信息用于指示释放所述专享通道的资源。
这里，实际应用时，可以在保证业务已经连续的前提下，再释放所述共享通道的资源。因此，可以在所述目标基站收到所述多播或广播业务结束标识后，向所述核心网设备发送第三指示信息。
基于此，在一实施例中，所述目标基站接收到所述源基站发送的多播或广播业务结束标识，向所述核心网设备发送第三指示信息。
还可以在所述目标基站收到所述核心网设备发送的多播或广播业务数据后，向所述核心网设备发送第三指示信息。
基于此，在一实施例中，所述目标基站从所述核心网接收到所述多播或广播业务数据，向所述核心网设备发送第三指示信息。
本申请实施例还提供一种信息传输方法，如图4所示，该方法包括：
步骤401：核心网设备向源基站发送多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换；
步骤402：所述源基站接收到所述核心网设备发送的多播或广播业务结束标识后，将接收的多播或广播业务结束标识发送至所述目标基站；
步骤403：所述目标基站接收所述源基站发送的多播或广播业务结束标识。
这里，需要说明的是，源基站、核心网设备及目标基站的具体处理过程已在上文详述，这里不再赘述。
本申请实施例提供的信息传输方法，核心网设备向源基站发送多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换；而所述源基站接收到所述核心网设备发送的多播或广播业务结束标识后，将接收的多播或广播业务结束标识发送至所述目标基站，通过传输多播或广播业务结束标识，从而使得目标基站能够获知多播或广播业务结束标识，即获知从核心网设备接收多播或广播业务数据的时机，进而实现目标基站对多播或广播业务的连续、有序的发送，保证了多播或广播业务的连续性。
下面结合应用实施例对本申请再作进一步详细的描述。
在应用实施例中，建立源基站和UPF之间UE(接收多播或广播业务)专享的传输通道，来实现目标基站获知具体切换UE的end marker，实现目标基站对数据的连续、有序的发送。
应用实施例一
在本应用实施例中，切换过程中核心网网元触发建立源基站和核心网网元间的UE专享传输通道。
本应用实施例终端接收多播或广播业务的流程，包括以下步骤：
步骤1：UE请求某多播或广播业务，即向核心网发送多播或广播业务申请，核心网侧识别UE申请的多播或广播业务后，为UE建立对应的多播传输所需的PDU session、QoS flow、传输隧道等，即为UE建立多播传通道。
步骤2：在接收多播或广播业务的过程中，UE按照网络侧的配置进行测量及测量结果上报；
步骤3：源基站决定将UE切换到目标基站，源基站向目标基站发送切换请求；
这里，实际应用时，源基站决定将UE切换到目标基站的原因可以是有很多种，比如所述源基站可以根据UE上报的测量结果或无线资源管理(RRM)信息决定将UE切换到目标基站，也可以网络决定做负载均衡时决定将UE切换到目标基站等。
所述切换请求携带以下信息中的至少一种：目标小区(target cell)ID，UE的小区无线网络临时标识(C-RNTI)、群组无线网络临时标识(G-RNTI)、 多播或广播业务相关的PDU session信息(也可以理解为标识)、QoS flow信息、传输隧道信息、多播或广播标识(表明该业务为多播或广播业务)等。
步骤4：目标基站对UE进行接入控制，若接纳则通知源基站，然后源基站向UE口发切换命令；
步骤5：源基站对目标基站做序列号状态传输(英文表达为SN status transfer)，数据转发(英文表达为data forwarding)；
这里，本步骤的具体实现可参照相关技术中接收单播业务的UE切换流程中源基站对目标基站做序列号状态传输，数据转发。
步骤6：UE从源基站去附着(英文表达为detach)，并接入到目标基站；
这里，UE通过随机接入信道(RACH)接入到目标基站。
步骤7：目标基站转发源基站发送的数据包给UE；
步骤8：目标基站向核心网(如接入和移动管理功能(AMF))发起路径切换(英文可以表达为path switch)请求，以将下行数据传输路径切换到目标基站；
这里，该请求中可能携带多播或广播业务标识，或多播传输标识(QoS flow、PDU Session、或传隧道信息等)，以及UE信息。
步骤9：当核心网网元(如可能是AMF，会话管理功能(SMF)和UPF中的一个)直接或间接收到目标基站的路径切换请求后，为切换的UE建立源基站和核心网间的单播传输通道，即专享传输通道；
这里，单播传输通道可以通过单播QoS flow表征，此时该单播QoS flow与多播或广播业务的QoS flow间存在绑定关系，且两个QoS flow可能属于同一个或不同PDU session，两个QoS flow可能共用同一个或用不同的传输隧道。单播传输通道也可以通过别的信息表征，比如单播传输通道也可能是指一个单独的PDU session，或单独的传输隧道等，无论哪种方式，新建立的单播传输通道与多播或广播业务的以下信息至少之一有一定的绑定关系：
QoS flow标识；
PDU session标识；
传输隧道标识。
这里，实际应用时，步骤7和步骤8的执行顺序可以不分先后。
实际应用时，在AMF收到路径切换请求的情况下，AMF发送相应的PDU session建立请求给SMF，然后SMF反馈相关上下文给AMF作为响应标识；然后SMF建立单播传输通道。
在SMF收到路径切换请求的情况下，SMF直接建立单播传输通道。
在UPF收到路径切换请求的情况下，UPF指示SMF建立单播传输通道；SMF收到指示后建立单播传输通道。
步骤10：UPF通过建立的单播传输通道发送多个end marker包给源基 站，源基站将接收的多个end marker包转发给目标基站；
步骤11：目标基站接到end marker后从UPF接收多播或广播业务的数据包；
步骤12：目标基站接收AMF的路径切换确认，并通知源基站释放UE上下文(context)。
其中，实际应用时，目标基站在收到end marker或者直接从UPF接收到数据包之后，可以向核心网发送指示信息(即第三指示信息)，核心网释放源基站和核心网间的单播传输通道。
应用实施例二
在本应用实施例中，切换过程中源基站触发建立源基站和核心网网元间的UE专享传输通道。
本应用实施例终端接收多播或广播业务的流程，包括以下步骤：
步骤1：UE请求某多播或广播业务，即向核心网发送多播或广播业务申请，核心网侧识别UE申请的多播或广播业务后，为UE建立对应的多播传输所需的PDU session、QoS flow、传输隧道等，即为UE建立多播传通道。
步骤2：在接收多播或广播业务的过程中，UE按照网络侧的配置进行测量及测量结果上报；
步骤3：源基站决定将UE切换到目标基站，源基站向目标基站发送切换请求；
这里，实际应用时，源基站决定将UE切换到目标基站的原因可以是有很多种，比如所述源基站可以根据UE上报的测量结果或RRM信息决定将UE切换到目标基站，也可以网络决定做负载均衡时决定将UE切换到目标基站等。
所述切换请求携带以下信息中的至少一种：target cell ID，UE的C-RNTI、G-RNTI、多播或广播业务相关的PDU session信息(也可以理解为标识)、QoS flow信息、传输隧道信息、多播或广播标识(表明该业务为多播或广播业务)等。
步骤4：目标基站对UE进行接入控制，若接纳则通知源基站，然后源基站向UE发切换命令；
步骤5：源基站向核心网网元(可能是AMF、SMF和UPF中的一个)发送相应的指示信息，即第一指示信息，用于指示建立源基站和核心网间的单播传通道，即专享传输通道；
比如，源基站向AMF发送指示信息，AMF收到指示信息后指示UPF建立和源基站间通道，或者源基站直接指示UPF。
其中，源基站向核心网网元发送的指示信息中应至少包含多播或广播业务的QoS flow信息(如QoS flow标识符(QFI))，及UE标识信息，还可以包含其他多播传输通道信息，比如对应的PDU session标识、隧道信息 (N3/N9tunnel)标识中的一种或多种。
单播传输通道可以通过单播QoS flow表征，此时该单播QoS flow与多播或广播业务的QoS flow间存在绑定关系，两个QoS flow可能属于同一个或不同PDU session，两个QoS flow可能共用同一个或用不同的传输隧道。单播传输通道也可以通过别的信息表征，比如单播传输通道也可能是指一个单独的PDU session，或单独的传输隧道等，无论哪种方式，新建立的单播传输通道与多播或广播业务的以下信息至少之一有一定的绑定关系：
QoS flow标识；
PDU session标识；
传输隧道标识。
实际应用时，该步骤还可能发生在源基站决定对UE做切换后(可能是在向目标基站发切换请求之前或之后)，或者发生在目标基站决定要接收切换的UE后(可能在向源基站反馈切换确认之前或之后)。
另外，实际应用时，单播传输通道建立的过程可能是与后续步骤并行。
步骤6：源基站对目标基站做序列号状态传输，数据转发；
这里，本步骤的具体实现可参照相关技术中接收单播业务的UE切换流程中源基站对目标基站做序列号状态传输，数据转发。
步骤7：UE从源基站去附着(英文表达为detach)，并接入到目标基站；
这里，UE通过RACH接入到目标基站。
步骤8：目标基站转发源基站发送的数据包给UE；
步骤9：目标基站向核心网(如AMF)发起路径切换请求，以将下行数据传输路径切换到目标基站；
这里，该请求中可能携带多播或广播业务标识，或多播传输标识(QoS flow、PDU Session、或传隧道信息等)，以及UE信息。
步骤10：UPF通过建立的单播传输通道发送多个end marker包给源基站，源基站将接收的多个end marker包转发给目标基站；
步骤11：目标基站接到end marker后从UPF接收多播或广播业务的数据包；
步骤12：目标基站接收AMF的路径切换确认，并通知源基站释放UE context。
其中，实际应用时，目标基站在收到end marker或者直接从UPF接收到数据包之后，可以向核心网发送指示信息(即第三指示信息)，核心网释放源基站和核心网间的单播传输通道。
应用实施例三
在本应用实施例中，切换过程中目标基站触发建立源基站和核心网网元间的UE专享传输通道。
本应用实施例终端接收多播或广播业务的流程，包括以下步骤：
步骤1：UE请求某多播或广播业务，即向核心网发送多播或广播业务 申请，核心网侧识别UE申请的多播或广播业务后，为UE建立对应的多播传输所需的PDU session、QoS flow、传输隧道等，即为UE建立多播传通道。
步骤2：在接收多播或广播业务的过程中，UE按照网络侧的配置进行测量及测量结果上报；
步骤3：源基站决定将UE切换到目标基站，源基站向目标基站发送切换请求；
这里，实际应用时，源基站决定将UE切换到目标基站的原因可以是有很多种，比如所述源基站可以根据UE上报的测量结果或RRM信息决定将UE切换到目标基站，也可以网络决定做负载均衡时决定将UE切换到目标基站等。
所述切换请求携带以下信息中的至少一种：target cell ID、UE的C-RNTI、G-RNTI、多播或广播业务相关的PDU session信息(也可以理解为标识)、QoS flow信息、传输隧道信息、多播或广播标识(表明该业务为多播或广播业务)等。
步骤4：目标基站对UE进行接入控制，若接纳则通知源基站，然后源基站向UE发切换命令；
步骤5：源基站对目标基站做序列号状态传输，数据转发；
这里，本步骤的具体实现可参照相关技术中接收单播业务的UE切换流程中源基站对目标基站做序列号状态传输，数据转发。
步骤6：源基站向核心网网元(可能是AMF、SMF和UPF中的一个)发送相应的指示信息，即第二指示信息，用于指示建立源基站和核心网间的单播传通道，即专享传输通道；
比如，目标基站向AMF发送指示信息，AMF收到指示信息后指示UPF建立和源基站间通道，或者目标基站直接指示UPF。
其中，目标基站向核心网网元发送的指示信息中应至少包含多播或广播业务的QoS flow信息(如QFI)，及UE标识信息，还可以包含其他多播传输通道信息，比如对应的PDU session标识、隧道信息(N3/N9tunnel)标识中的一种或多种。
单播传输通道可以通过单播QoS flow表征，此时该单播QoS flow与多播或广播业务的QoS flow间存在绑定关系，两个QoS flow可能属于同一个或不同PDU session，两个QoS flow可以共用同一个的传输隧道或用不同的传输隧道。也可以通过别的信息表征，比如单播传输通道也可能是指一个单独的PDU session，或单独的传输隧道等，无论哪种方式，新建立的单播传输通道与多播或广播业务的以下信息至少之一有一定的绑定关系：
QoS flow标识；
PDU session标识；
传输隧道标识。
实际应用时，该步骤还可能发生在目标基站收到源基站的切换请求后(可能是在向目标基站发切换请求之前或之后)，也可能发生在目标基站收到源基站发送的序列号状态和转发的数据后。
另外，实际应用时，单播传输通道建立的过程可能是与后续步骤并行。
步骤7：UE从源基站去附着，并接入到目标基站；
这里，UE通过RACH接入到目标基站。
步骤8：目标基站转发源基站发送的数据包给UE；
步骤9：目标基站向核心网(如AMF)发起路径切换请求，以将下行数据传输路径切换到目标基站；
这里，该请求中可能携带多播或广播业务标识或多播传输标识(QoS flow、PDU Session、或传隧道信息等)，以及UE信息。
步骤10：UPF通过建立的单播传输通道发送多个end marker包给源基站，源基站将接收的多个end marker包转发给目标基站；
步骤11：目标基站接到end marker后从UPF接收多播或广播业务的数据包；
步骤12：目标基站接收AMF的路径切换确认，并通知源基站释放UE context。
其中，实际应用时，目标基站在收到end marker包或者直接从UPF接收到数据包之后，可以向核心网发送指示信息(即第三指示信息)，核心网释放源基站和核心网间的单播传输通道。
从应用实施例一、二和三可以看出，如图5所示，在本申请实施例中，UE接收多播或广播业务的流程，主要包括：
步骤501：进行组播广告(英文表达为Multicast Announcement)，以便UE选择多播或广播业务；
步骤502：UE选择多播或广播业务后，进行注册，即申请多播或广播业务，建立PDU session；
步骤503：UE加入多播或广播业务；
步骤504：基站(无线接入网(RAN)侧)和核心网之间建立隧道，获得UE和多播或广播业务的绑定关系；
这里，步骤501～504相当于应用实施例一至三中的步骤1。
步骤505：进行多播或广播业务数据的传输；
其中，传输方式可以是点对点(PTP)方式或点对多(PTM)方式。
步骤506：UE进行测量上报；
步骤507：在源基站决定将UE切换到目标基站；
步骤508：在切换过程中建立，源基站实现数据转发，并建立单播传输通道；
步骤509：UPF通过单播传输通道将end marker包发送给源基站，然后源基站将接收的end marker包发送给目标基站；
步骤510：目标基站接收到end marker包后从UPF接收多播或广播业务的数据。
在UE的切换过程中触发UE专用的单播传输通道的建立，仅在需要时建立，方式灵活动态，按需建立。
其中，由核心网触发建立单播传通道的方式，无需增加额外的信令交互。由RAN侧触发建立单播传通道的方式，由于是在有需求的情况下，所以实施时可以尽早建立该单播传输通道，以避免由于传输通道的建立增加切换时延。
应用实施例四
在本应用实施例中，网络为UE初始建立多播传输通道时同时建立源基站和核心网网元间的UE专享传输通道。
本应用实施例终端接收多播或广播业务的流程，包括以下步骤：
步骤1：UE请求某多播或广播业务，即向核心网发送多播或广播业务申请，核心网侧识别UE申请的多播或广播业务后，为UE建立对应的多播传输所需的PDU session、QoS flow、传输隧道等，即为UE建立多播传通道；同时，建立源基站和核心网网元间的单播传输通，即共享传输通道；
比如，单播和多播或广播业务分别建立一个QoS flow，即单播传输通道可以通过单播QoS flow表征，多播或广播业务QoS flow是多UE共享的，单播QoS flow是UE专用的，多播或广播业务的QoS flow和单播QoS flow间存在一定的绑定关系，两个QoS flow可能属于同一个或不同PDU session，两个QoS flow可能共用同一个或用不同的传输隧道(如N3隧道)。
实际应用时，网络还可以配置该单播QoS flow是否用于其他单播业务的数据的传输。
单播传输通道也可以通过别的信息表征，比如可能是指一个单独的PDU session，或单独的传输隧道等，无论哪种方式，新建立的单播传输通道与多播或广播业务的以下信息至少之一有一定的绑定关系：
QoS flow标识；
PDU session标识；
传输隧道标识。
步骤2：在接收多播或广播业务的过程中，UE按照网络侧的配置进行测量及测量结果上报；
步骤3：源基站决定将UE切换到目标基站，源基站向目标基站发送切换请求；
这里，实际应用时，源基站决定将UE切换到目标基站的原因可以是有很多种，比如所述源基站可以根据UE上报的测量结果或RRM信息决定将UE切换到目标基站，也可以网络决定做负载均衡时决定将UE切换到目标基站等。
所述切换请求携带以下信息中的至少一种：target cell ID、UE的 C-RNTI、G-RNTI、多播或广播业务相关的PDU session信息(也可以理解为标识)、QoS flow信息、传输隧道信息、多播或广播标识(表明该业务为多播或广播业务)等。
步骤4：目标基站对UE进行接入控制，若接纳则通知源基站，然后源基站向UE发切换命令；
步骤5：源基站对目标基站做序列号状态传输，数据转发；
这里，本步骤的具体实现可参照相关技术中接收单播业务的UE切换流程中源基站对目标基站做序列号状态传输，数据转发。
步骤6：UE从源基站去附着，并接入到目标基站；
这里，UE通过RACH接入到目标基站。
步骤7：目标基站转发源基站发送的数据包给UE；
步骤8：目标基站向核心网(如AMF)发起路径切换请求，以将下行数据传输路径切换到目标基站；
这里，该请求中可能携带多播或广播业务标识，或多播传输标识(QoS flow、PDU Session、或传隧道信息等)，以及UE信息。
步骤9：UPF通过建立的单播传输通道发送多个end marker包给源基站，源基站将接收的多个end marker包转发给目标基站；
步骤10：目标基站接到end marker后从UPF接收多播或广播业务的数据包；
步骤11：目标基站接收AMF的路径切换确认，并通知源基站释放UE context。
其中，实际应用时，目标基站在收到end marker包或者直接从UPF接收到数据包之后，可以向核心网发送指示信息(即第三指示信息)，核心网释放源基站和核心网间的单播传输通道。
从上面的描述可以看出，在本应用实施例中，是在UE开始接收多播或广播业务时便建立对应的单播传输通道，如此，能够确保时时可用。
其中，在应用实施例中，单播传输通道的建立过程可以采用如下实现方式：
首先，SMF会与统一数据管理平台(UDM)交互完成相关PDU session的登记及必要数据的获取)；接着，SMF会进行PCF选择及N4会话的建立(与UPF交互)；最后，SMF发N1、N2消息(Namf_Communication_N1N2MessageTransfer)给AMF，该消息里包含发给UE的信息(比如UE的QoS规则(rule)(对上行数据进行分类时使用)，分配给UE的IP等)，以及需要提供给基站的UPF隧道地址和隧道端点标识(TEID)，实现N3隧道的打通，以及建立QoS flow(或者说实现与PDU session的绑定)。
这里，在原PDU session/N3 tunnel中建立新的QoS flow可以采用相关技术中的网络触发的PDUsession修改(network triggered PDU session  modification)流程。
需要说明的是：本申请实施例对建立单播传输通道的实现过程不作限定。
从上面的描述可以看出，本申请实施例的方案，通过核心网与RAN(源基站)侧的单播传通道发送切换UE的多播或广播业务的end marker包，从而使得目标基站能够获知多播或广播业务结束标识，即获知从核心网设备接收多播或广播业务数据的时机，进而实现目标基站对多播或广播业务的连续、有序的发送，能够实现接收多播业务的UE切换到到不支持多播或广播业务的小区时，数据传输的连续性。
为了实现本申请实施例的方法，本申请实施例还提供了一种信息传输装置，设置在核心网设备，如图6所示，该装置包括：
第一传输单元602，配置为向源基站发送多播或广播业务结束标识；发送的多播或广播业务结束标识用于供目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机；其中，所述核心网设备与所述源基站之间还建立有传输所述多播或广播业务数据的多播或广播传输通道；所述多播或广播业务被切换的终端接收，即终端接收所述多播或广播业务且进行切换。
其中，在一实施例中，该装置还可以包括：
第一确定单元601，配置为确定接收多播或广播业务的终端进行小区切换。
在一实施例中，所述第一传输单元602，配置为：
通过与所述源基站建立的所述终端的专享通道向所述源基站发送多播或广播业务结束标识。
在一实施例中，所述第一传输单元602，还配置为：
在所述专享通道是由所述源基站触发建立的情况下，接收所述源基站发送的第一指示信息，以触发建立所述专享通道；所述第一指示信息用于指示建立所述专享通道。
在一实施例中，所述第一传输单元602，还配置为：
在所述专享通道是由所述目标基站触发建立的情况下，接收所述目标基站发送的第二指示信息，以触发建立所述专享通道；所述第二指示信息用于指示建立所述专享通道。
在一实施例中，所述第一传输单元602，还配置为：
在所述专享通道是由所述核心网设备触发建立的情况下，接收所述目标基站发送的路径切换请求，以触发建立所述专享通道；所述路径切换请求用于请求从所述核心网设备获取所述多播或广播业务的数据。
在一实施例中，所述第一传输单元602，还配置为：
在所述专享通道是在所述多播或广播业务对应的多播会话建立时建立的情况下，接收所述终端发送的所述多播或广播业务申请，以触发建立所 述专享通道。
在一实施例中，所述第一确定单元601，配置为：
接收到所述目标基站发送的路径切换请求；所述路径切换请求用于请求从所述核心网设备获取所述多播或广播业务的数据。
在一实施例中，该装置还可以包括：释放单元；其中，
所述第一传输单元602，还配置为：
接收所述目标基站发送的第三指示信息；所述第三指示信息用于指示释放所述专享通道的资源；
所述释放单元，配置为基于所述第三指示信息，释放所述专享通道的资源。
在一实施例中，所述第一传输单元602，配置为：
向所述源基站发送一个或多个表征多播或广播业务结束标识的包。
实际应用时，所述第一确定单元601及释放单元可由所述信息传输装置中的处理器实现；所述第一传输单元602可由所述信息传输装置中的通信接口实现。
为了实现本申请实施例源基站侧的方法，本申请实施例还提供了一种信息传输装置，设置在源基站上，如图7所示，该装置包括：
第二传输单元702，配置为接收核心网设备发送的多播或广播业务结束标识；以及将接收的多播或广播业务结束标识发送至所述目标基站；发送的多播或广播业务结束标识用于供所述目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机；其中，所述核心网设备与所述源基站之间还建立有传输所述多播或广播业务数据的多播或广播传输通道；所述多播或广播业务被切换的终端接收，即终端接收所述多播或广播业务且进行切换。
其中，在一实施例中，如图7所示，该装置还可以包括：
第二确定单元701，配置为确定接收多播或广播业务的终端进行小区切换。
在一实施例中，所述第二传输单元702，配置为通过与核心网建立的所述终端的专享通道接收核心网设备发送的多播或广播业务结束标识。
其中，在一实施例中，所述第二传输单元702，还配置为：
在所述专享通道是由所述源基站触发建立的情况下，向核心网设备发送第一指示信息，以触发建立所述专享通道；所述第一指示信息用于指示建立所述专享通道。
在一实施例中，所述第二传输单元702，配置为：
接收核心网设备发送的一个或多个表征多播或广播业务结束标识的包；
将接收的多个表征多播或广播业务结束标识的包发送至所述目标基站。
实际应用时，所述第二确定单元701及释放单元可由所述信息传输装置中的处理器实现；所述第二传输单元702可由所述信息传输装置中的通信接口实现。
为了实现本申请实施例目标基站侧的方法，本申请实施例还提供了一种信息传输装置，设置在目标基站上，如图8所示，该装置包括：
第三传输单元802，配置为接收源基站发送的多播或广播业务结束标识；接收的多播或广播业务结束标识用于供所述目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机；其中，所述核心网设备与所述源基站之间还建立有传输所述多播或广播业务数据的多播传输通道；所述多播或广播业务被切换的终端接收，即终端接收所述多播或广播业务且进行切换；所述源基站发送的多播或广播业务结束标识是从核心网设备接收的。
其中，在一实施例中，如图8所示，该装置还可以包括：
第三确定单元801，配置为确定接收多播或广播业务的终端进行小区切换。
所述第三传输单元802，还配置为：
在所述专享通道是由所述目标基站触发建立的情况下，向核心网设备发送第二指示信息，以触发建立所述专享通道；所述第二指示信息用于指示建立所述专享通道。
在一实施例中，所述第三传输单元802，还配置为：
向所述核心网设备发送第三指示信息；所述第三指示信息用于指示释放所述专享通道的资源。
其中，在一实施例中，所述第三传输单元802，配置为：
接收到所述源基站发送的多播或广播业务结束标识，向所述核心网设备发送第三指示信息；
或者，
从所述核心网接收到所述多播或广播业务数据，向所述核心网设备发送第三指示信息。
在一实施例中，所述第三传输单元802，配置为：
接收所述源基站发送的一个或多个表征多播或广播业务结束标识的包。
实际应用时，所述第三确定单元801及释放单元可由所述信息传输装置中的处理器实现；所述第三传输单元802可由所述信息传输装置中的通信接口实现。
需要说明的是：上述实施例提供的信息传输装置在进行信息传输时，仅以上述各程序模块的划分进行举例说明，实际应用中，可以根据需要而将上述处理分配由不同的程序模块完成，即将装置的内部结构划分成不同的程序模块，以完成以上描述的全部或者部分处理。另外，上述实施例提 供的信息传输装置与信息传输方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
基于上述程序模块的硬件实现，且为了实现本申请实施例核心网设备侧的操作，本申请实施例还提供了一种核心网设备，如图9所示，该核心网设备900包括：
第一通信接口901，能够与源基站和目标基站进行信息交互；
第一处理器902，与所述第一通信接口901连接，以实现与源基站和目标基站进行信息交互，配置为运行计算机程序时，执行上述核心网设备侧一个或多个技术方案提供的方法。而所述计算机程序存储在第一存储器903上。
具体地，所述第一通信接口901，配置为向源基站发送多播或广播业务结束标识；发送的多播或广播业务结束标识用于供目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机；其中，所述核心网设备与所述源基站之间还建立有传输所述多播或广播业务数据的多播或广播传输通道；所述多播或广播业务被切换的终端接收，即终端接收所述多播或广播业务且进行切换。
其中，在一实施例中，所述第一处理器902，配置为确定接收多播或广播业务的终端进行小区切换。
在一实施例中，所述第一通信接口901，配置为：
通过与所述源基站建立的所述终端的专享通道向所述源基站发送多播或广播业务结束标识。
其中，在一实施例中，所述第一通信接口901，还配置为：
在所述专享通道是由所述源基站触发建立的情况下，接收所述源基站发送的第一指示信息，以触发建立所述专享通道；所述第一指示信息用于指示建立所述专享通道。
在一实施例中，所述第一通信接口901，还配置为：
在所述专享通道是由所述目标基站触发建立的情况下，接收所述目标基站发送的第二指示信息，以触发建立所述专享通道；所述第二指示信息用于指示建立所述专享通道。
在一实施例中，所述第一通信接口901，还配置为：
在所述专享通道是由所述核心网设备触发建立的情况下，接收所述目标基站发送的路径切换请求，以触发建立所述专享通道；所述路径切换请求用于请求从所述核心网设备获取所述多播或广播业务的数据。
在一实施例中，所述第一通信接口901，还配置为：
在所述专享通道是在所述多播或广播业务对应的多播会话建立时建立的情况下，接收所述终端发送的所述多播或广播业务申请，以触发建立所述专享通道。
在一实施例中，所述第一处理器902，配置为：
接收到所述目标基站发送的路径切换请求；所述路径切换请求用于请求从所述核心网设备获取所述多播或广播业务的数据。
在一实施例中，该装置还可以包括：释放单元；其中，
所述第一通信接口901，还配置为：
接收所述目标基站发送的第三指示信息；所述第三指示信息用于指示释放所述专享通道的资源；
所述释放单元，配置为基于所述第三指示信息，释放所述专享通道的资源。
在一实施例中，所述第一通信接口901，配置为：
向所述源基站发送一个或多个表征多播或广播业务结束标识的包。
需要说明的是：第一处理器902和第一通信接口901的具体处理过程可参照上述方法理解。
当然，实际应用时，核心网设备900中的各个组件通过总线系统904耦合在一起。可理解，总线系统904配置为实现这些组件之间的连接通信。总线系统904除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图9中将各种总线都标为总线系统904。
本申请实施例中的第一存储器903配置为存储各种类型的数据以支持核心网设备900的操作。这些数据的示例包括：用于在核心网设备900上操作的任何计算机程序。
上述本申请实施例揭示的方法可以应用于所述第一处理器902中，或者由所述第一处理器902实现。所述第一处理器902可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过所述第一处理器902中的硬件的集成逻辑电路或者软件形式的指令完成。上述的所述第一处理器902可以是通用处理器、数字信号处理器(DSP，Digital Signal Processor)，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。所述第一处理器902可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于第一存储器903，所述第一处理器902读取第一存储器903中的信息，结合其硬件完成前述方法的步骤。
在示例性实施例中，核心网设备900可以被一个或多个应用专用集成电路(ASIC，Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或者其他电子元件实 现，配置为执行前述方法。
基于上述程序模块的硬件实现，且为了实现本申请实施例源基站侧的方法，本申请实施例还提供了一种源基站，如图10所示，该源基站1000包括：
第二通信接口1001，能够与核心网设备和目标基站进行信息交互；
第二处理器1002，与所述第二通信接口1001连接，以实现与核心网设备和目标基站进行信息交互，配置为运行计算机程序时，执行上述源基站侧一个或多个技术方案提供的方法。而所述计算机程序存储在第二存储器1003上。
具体地，所述第二通信接口1001，配置为接收核心网设备发送的多播或广播业务结束标识；以及将接收的多播或广播业务结束标识发送至所述目标基站；发送的多播或广播业务结束标识用于供所述目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机；其中，所述核心网设备与所述源基站之间还建立有传输所述多播或广播业务数据的多播或广播传输通道；所述多播或广播业务被切换的终端接收，即终端接收所述多播或广播业务且进行切换。
其中，在一实施例中，所述第二处理器1002，配置为确定接收多播或广播业务的终端进行小区切换。
在一实施例中，所述第二通信接口1001，配置为通过与核心网建立的所述终端的专享通道接收核心网设备发送的多播或广播业务结束标识。
所述第二通信接口1001，还配置为：
在所述专享通道是由所述源基站触发建立的情况下，向核心网设备发送第一指示信息，以触发建立所述专享通道；所述第一指示信息用于指示建立所述专享通道。
在一实施例中，所述第二通信接口1001，配置为：
接收核心网设备发送的一个或多个表征多播或广播业务结束标识的包；
将接收的一个或多个表征多播或广播业务结束标识的包发送至所述目标基站。
需要说明的是：第二处理器1002和第二通信接口1001的具体处理过程可参照上述方法理解。
当然，实际应用时，源基站1000中的各个组件通过总线系统1004耦合在一起。可理解，总线系统1004配置为实现这些组件之间的连接通信。总线系统1004除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图10中将各种总线都标为总线系统1004。
本申请实施例中的第二存储器1003配置为存储各种类型的数据以支持源基站1000操作。这些数据的示例包括：用于在源基站1000上操作的任 何计算机程序。
上述本申请实施例揭示的方法可以应用于所述第二处理器1002中，或者由所述第二处理器1002实现。所述第二处理器1002可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过所述第二处理器1002中的硬件的集成逻辑电路或者软件形式的指令完成。上述的所述第二处理器1002可以是通用处理器、DSP，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。所述第二处理器1002可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于第二存储器1003，所述第二处理器1002读取第二存储器1003中的信息，结合其硬件完成前述方法的步骤。
在示例性实施例中，源基站1000可以被一个或多个ASIC、DSP、PLD、CPLD、FPGA、通用处理器、控制器、MCU、Microprocessor、或其他电子元件实现，配置为执行前述方法。
基于上述程序模块的硬件实现，且为了实现本申请实施例目标基站侧的方法，本申请实施例还提供了一种目标基站，如图11所示，该目标基站1100包括：
第三通信接口1101，能够与源基站和核心网设备进行信息交互；
第三处理器1102，与所述第三通信接口1101连接，以实现与源基站和核心网设备进行信息交互，配置为运行计算机程序时，执行上述目标基站侧一个或多个技术方案提供的方法。而所述计算机程序存储在第三存储器1103上。
具体地，所述第三通信接口1101，配置为接收源基站发送的多播或广播业务结束标识；接收的多播或广播业务结束标识用于供所述目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机；其中，所述核心网设备与所述源基站之间还建立有传输所述多播或广播业务数据的多播传输通道；所述多播或广播业务被切换的终端接收，即终端接收所述多播或广播业务且进行切换；所述源基站发送的多播或广播业务结束标识是从核心网设备接收的。
其中，在一实施例中，所述第三处理器1102，配置为确定接收多播或广播业务的终端进行小区切换。
所述第三通信接口1101，还配置为：
在所述专享通道是由所述目标基站触发建立的情况下，向核心网设备发送第二指示信息，以触发建立所述专享通道；所述第二指示信息用于指示建立所述专享通道。
在一实施例中，所述第三通信接口1101，还配置为：
向所述核心网设备发送第三指示信息；所述第三指示信息用于指示释放所述专享通道的资源。
其中，在一实施例中，所述第三通信接口1101，配置为：
接收到所述源基站发送的多播或广播业务结束标识，向所述核心网设备发送第三指示信息；
或者，
从所述核心网接收到所述多播或广播业务数据，向所述核心网设备发送第三指示信息。
在一实施例中，所述第三通信接口1101，配置为：
接收所述源基站发送的一个或多个表征多播或广播业务结束标识的包。
当然，实际应用时，目标基站1100中的各个组件通过总线系统1104耦合在一起。可理解，总线系统1104配置为实现这些组件之间的连接通信。总线系统1104除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图11中将各种总线都标为总线系统1104。
本申请实施例中的第三存储器1103配置为存储各种类型的数据以支持目标基站1100操作。这些数据的示例包括：用于在目标基站1100上操作的任何计算机程序。
上述本申请实施例揭示的方法可以应用于所述第三处理器1102中，或者由所述第三处理器1102实现。所述第三处理器1102可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过所述第三处理器1102中的硬件的集成逻辑电路或者软件形式的指令完成。上述的所述第三处理器1102可以是通用处理器、DSP，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。所述第三处理器1102可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于第三存储器1103，所述第三处理器1102读取第三存储器1103中的信息，结合其硬件完成前述方法的步骤。
在示例性实施例中，目标基站1100可以被一个或多个ASIC、DSP、PLD、CPLD、FPGA、通用处理器、控制器、MCU、Microprocessor、或其他电子元件实现，配置为执行前述方法。
可以理解，本申请实施例的存储器(第一存储器903、第二存储器1003、第三存储器1103)可以是易失性存储器或者非易失性存储器，也可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(ROM，Read Only Memory)、可编程只读存储器(PROM，Programmable  Read-Only Memory)、可擦除可编程只读存储器(EPROM，Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，Electrically Erasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM，ferromagnetic random access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)；磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM，Random Access Memory)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(SRAM，Static Random Access Memory)、同步静态随机存取存储器(SSRAM，Synchronous Static Random Access Memory)、动态随机存取存储器(DRAM，Dynamic Random Access Memory)、同步动态随机存取存储器(SDRAM，Synchronous Dynamic Random Access Memory)、双倍数据速率同步动态随机存取存储器(DDRSDRAM，Double Data Rate Synchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM，Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM，SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM，Direct Rambus Random Access Memory)。本申请实施例描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种信息传输系统，如图12所示，该系统包括：源基站1201、核心网设备1202及目标基站1203。
这里，需要说明的是，源基站1201、核心网设备1202及目标基站1203的具体处理过程已在上文详述，这里不再赘述。
在示例性实施例中，本申请实施例还提供了一种存储介质，即计算机存储介质，具体为计算机可读存储介质，例如包括存储计算机程序的第一存储器903，上述计算机程序可由核心网设备900的第一处理器902执行，以完成前述核心网设备侧方法所述步骤；再比如包括存储计算机程序的第二存储器1003，上述计算机程序可由源基站1000的第二处理器1002执行，以完成前述源基站侧方法所述步骤；再比如包括存储计算机程序的第三存储器1103，上述计算机程序可由目标基站1100的第三处理器1102执行，以完成前述目标基站侧方法所述步骤。计算机可读存储介质可以是FRAM、ROM、PROM、EPROM、EEPROM、Flash Memory、磁表面存储器、光盘、或CD-ROM等存储器。
需要说明的是：“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
另外，本申请实施例所记载的技术方案之间，在不冲突的情况下，可以任意组合。
以上所述，仅为本申请的较佳实施例而已，并非用于限定本申请的保 护范围。

Claims (42)

  1. 一种信息传输方法，应用于核心网设备，包括：
    向源基站发送多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换。
  2. 根据权利了要求1所述的方法，其中，通过与所述源基站建立的所述终端的专享通道向所述源基站发送多播或广播业务结束标识。
  3. 根据权利要求1所述的方法，其中，发送的多播或广播业务结束标识用于供目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机。
  4. 根据权利要求2所述的方法，其中，所述专享通道是在小区切换准备或执行或完成过程中建立的；
    或者，
    所述专享通道是在所述多播或广播业务对应的多播或广播会话建立时建立的。
  5. 根据权利要求4所述的方法，其中，所述专享通道是由以下设备之一触发建立的：
    所述源基站；
    所述目标基站；
    所述核心网设备。
  6. 根据权利要求5所述的方法，其中，在所述专享通道是由所述源基站触发建立的情况下，所述方法还包括：
    接收所述源基站发送的第一指示信息，以触发建立所述专享通道；所述第一指示信息用于指示建立所述专享通道。
  7. 根据权利要求5所述的方法，其中，在所述专享通道是由所述目标基站触发建立的情况下，所述方法还包括：
    接收所述目标基站发送的第二指示信息，以触发建立所述专享通道；所述第二指示信息用于指示建立所述专享通道。
  8. 根据权利要求5所述的方法，其中，在所述专享通道是由所述核心网设备触发建立的情况下，所述方法还包括：
    接收所述目标基站发送的路径切换请求，以触发建立所述专享通道；所述路径切换请求用于请求从所述核心网设备获取所述多播或广播业务的数据。
  9. 根据权利要求4所述的方法，其中，在所述专享通道是在所述多播或广播业务对应的多播会话建立时建立的情况下，所述方法还包括：
    接收所述终端发送的所述多播或广播业务申请，以触发建立所述专享通道。
  10. 根据权利要求2所述的方法，其中，所述专享通道与所述多播或广播业务的以下相关信息至少之一具有绑定关系：
    服务质量流QoS flow标识；
    数据协议单元会话PDU session标识；
    传输隧道标识。
  11. 根据权利要求1所述的方法，其中，所述方法还包括：
    确定接收所述多播或广播业务的终端进行小区切换。
  12. 根据权利要求11所述的方法，其中，所述确定进行多播或广播业务的终端进行小区切换，包括：
    接收到所述目标基站发送的路径切换请求；所述路径切换请求用于请求从所述核心网设备获取所述多播或广播业务的数据。
  13. 根据权利要求2所述的方法，其中，所述方法还包括：
    接收所述目标基站发送的第三指示信息；所述第三指示信息用于指示释放所述专享通道的资源；
    基于所述第三指示信息，释放所述专享通道的资源。
  14. 根据权利要求1至13任一项所述的方法，其中，所述向所述源基站发送多播或广播业务结束标识，包括：
    向所述源基站发送一个或多个表征多播或广播业务结束标识的包。
  15. 一种信息传输方法，应用于源基站，包括：
    接收核心网设备发送的多播或广播业务结束标识；
    将接收的多播或广播业务结束标识发送至目标基站；其中，终端接收所述多播或广播业务且进行切换。
  16. 根据权利要求15所述的方法，其中，通过与核心网建立的所述终端的专享通道接收核心网设备发送的多播或广播业务结束标识。
  17. 根据权利要求15所述的方法，其中，发送的多播或广播业务结束标识用于供所述目标基站确定从所述核心网设备接收所述多播或广播业务数据的时机。
  18. 根据权利要求16所述的方法，其中，所述专享通道是在小区切换准备或执行或完成过程中建立的；
    或者，
    所述专享通道是在所述多播或广播业务对应的多播或广播会话建立时建立的。
  19. 根据权利要求18所述的方法，其中，所述专享通道是由以下设备之一触发建立的：
    所述源基站；
    所述目标基站；
    所述核心网设备。
  20. 根据权利要求19所述的方法，其中，在所述专享通道是由所述源 基站触发建立的情况下，所述方法还包括：
    向核心网设备发送第一指示信息，以触发建立所述专享通道；所述第一指示信息用于指示建立所述专享通道。
  21. 根据权利要求15所述的方法，其中，所述专享通道与所述多播或广播业务的以下相关信息至少之一具有绑定关系：
    QoS flow标识；
    PDU session标识；
    传输隧道标识。
  22. 根据权利要求15至21任一项所述的方法，其中，
    接收核心网设备发送的一个或多个表征多播或广播业务结束标识的包；
    将接收的一个或多个表征多播或广播业务结束标识的包发送至所述目标基站。
  23. 一种信息传输方法，应用于目标基站，包括：
    接收源基站发送的多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换。
  24. 根据权利要求23所述的方法，其中，所述源基站发送的多播或广播业务结束标识是所述源基站通过与核心网设备建立的所述终端共享通道接收的。
  25. 根据权利要求23所述的方法，其中，接收的多播或广播业务结束标识用于供所述目标基站确定从核心网设备接收所述多播或广播业务数据的时机。
  26. 根据权利要求24所述的方法，其中，所述专享通道是在小区切换准备或执行或完成过程中建立的；
    或者，
    所述专享通道是在所述多播或广播业务对应的多播会话建立时建立的。
  27. 根据权利要求26所述的方法，其中，所述专享通道是由以下设备之一触发建立的：
    所述源基站；
    所述目标基站；
    所述核心网设备。
  28. 根据权利要求27所述的方法，其中，在所述专享通道是由所述目标基站触发建立的情况下，所述方法还包括：
    向核心网设备发送第二指示信息，以触发建立所述专享通道；所述第二指示信息用于指示建立所述专享通道。
  29. 根据权利要求24所述的方法，其中，所述专享通道与所述多播或广播业务的以下相关信息至少之一具有绑定关系：
    QoS flow标识；
    PDU session标识；
    传输隧道标识。
  30. 根据权利要求24所述的方法，其中，所述方法还包括：
    向所述核心网设备发送第三指示信息；所述第三指示信息用于指示释放所述专享通道的资源。
  31. 根据权利要求30所述的方法，其中，所述向所述核心网设备发送第三指示信息，包括：
    接收到所述源基站发送的多播或广播业务结束标识，向所述核心网设备发送第三指示信息；
    或者，
    从所述核心网接收到所述多播或广播业务数据，向所述核心网设备发送第三指示信息。
  32. 根据权利要求23至31任一项所述的方法，其中，所述接收源基站发送的多播或广播业务结束标识，包括：
    接收所述源基站发送的一个或多个表征多播或广播业务结束标识的包。
  33. 一种信息传输装置，包括：
    第一传输单元，配置为向源基站发送多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换。
  34. 一种信息传输装置，包括：
    第二传输单元，配置为接收核心网设备发送的多播或广播业务结束标识；以及将接收的多播或广播业务结束标识发送至目标基站；其中，终端接收所述多播或广播业务且进行切换。
  35. 一种信息传输装置，包括：
    第三传输单元，配置为接收源基站发送的多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换。
  36. 一种核心网设备，包括：第一处理器及第一通信接口；其中，
    所述第一通信接口，配置为向源基站发送多播或广播业务结束标识；其中，终端接收所述多播或广播业务且进行切换。
  37. 一种源基站，包括：第二处理器及第二通信接口；其中，
    所述第二通信接口，配置为接收核心网设备发送的多播或广播业务结束标识；以及将接收的多播或广播业务结束标识发送至目标基站；其中，终端接收所述多播或广播业务且进行切换。
  38. 一种目标基站，包括：第三处理器及第三通信接口；其中，
    所述第三通信接口，配置为接收源基站发送的多播或广播业务结束标识；其终端接收所述多播或广播业务且进行切换。
  39. 一种核心网设备，包括：第一处理器和配置为存储能够在处理器 上运行的计算机程序的第一存储器，
    其中，所述第一处理器配置为运行所述计算机程序时，执行权利要求1至14任一项所述方法的步骤。
  40. 一种源基站，包括：第二处理器和配置为存储能够在处理器上运行的计算机程序的第二存储器，
    其中，所述第二处理器配置为运行所述计算机程序时，执行权利要求15至22任一项所述方法的步骤。
  41. 一种目标基站，包括：第三处理器和配置为存储能够在处理器上运行的计算机程序的第三存储器，
    其中，所述第三处理器配置为运行所述计算机程序时，执行权利要求23至32任一项所述方法的步骤。
  42. 一种存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1至14任一项所述方法的步骤，或者实现权利要求15至22任一项所述方法的步骤，或者实现权利要求23至32任一项所述方法的步骤。
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