WO2023070587A1 - 网络接入切换方法、装置、设备及存储介质 - Google Patents
网络接入切换方法、装置、设备及存储介质 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/34—Modification of an existing route
- H04W40/36—Modification of an existing route due to handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/03—Reselecting a link using a direct mode connection
- H04W36/033—Reselecting a link using a direct mode connection in pre-organised networks
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/304—Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
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- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
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Definitions
- the present disclosure relates to the technical field of wireless communication, and in particular to a network access switching method, device, device and storage medium.
- Sidelink technology is a near-field communication technology in which terminals directly connect information through a wireless interface between them.
- the 5G system (5th Generation System, 5GS) introduces the Relay Sidelink scenario.
- the Relay Sidelink scenario when a sidelink connection is established between two terminals, one terminal can act as a relay. Enable another terminal to access the network.
- the present disclosure provides a network access switching method, device, equipment and storage medium. Described technical scheme is as follows:
- a network access switching method is provided, the method is performed by a first base station, and the first base station is a base station accessed by a first terminal; the method includes:
- the authorized land public mobile communication network PLMN list of the first terminal send a handover request to the second base station, the second base station is the base station accessed by the second terminal, and the PLMN of the cell accessed by the second terminal
- the identifier belongs to the authorized PLMN list, and the switching request is used to request switching the network access mode of the first terminal to accessing the network through a Sidelink with the second terminal.
- a network access switching method is provided, the method is performed by a second base station, and the second base station is a base station accessed by a second terminal; the method includes:
- the first base station is the base station accessed by the first terminal, and the PLMN identifier of the cell accessed by the second terminal belongs to the authorized PLMN list
- the switching request is used to request switching the network access mode of the first terminal to accessing the network through a Sidelink with the second terminal.
- a network access switching method is provided, the method is executed by a core network device, and the method includes:
- the authorized PLMN list is the PLMN list used by the first base station to send the handover request to the second base station
- the second base station is a base station accessed by the second terminal
- the PLMN identifier of the cell accessed by the second terminal belongs to the authorized PLMN list
- the handover request is used to request that the network access of the first terminal
- the access mode is switched to accessing the network through the Sidelink with the second terminal.
- a network access switching device is provided, the device is used for a first base station, and the first base station is a base station accessed by a first terminal; the device includes:
- a sending module configured to send a handover request to a second base station according to the authorized land public mobile communication network PLMN list of the first terminal, where the second base station is a base station accessed by the second terminal, and the second terminal accesses
- the PLMN identifier of the incoming cell belongs to the authorized PLMN list, and the switch request is used to request to switch the network access mode of the first terminal to access through the Sidelink with the second terminal network.
- a network access switching device is provided, the device is used for a second base station, and the second base station is a base station accessed by a second terminal; the device includes:
- the receiving module is configured to receive a handover request sent by the first base station according to the authorized PLMN list of the first terminal, the first base station is the base station accessed by the first terminal, and the PLMN identifier of the cell accessed by the second terminal Belonging to the authorized PLMN list, the switching request is used to request switching the network access mode of the first terminal to accessing the network through a Sidelink with the second terminal.
- a network access switching device in another aspect, includes:
- a sending module configured to send an authorized PLMN list of the first terminal to a first base station, the first base station is a base station accessed by the first terminal, and the authorized PLMN list is a handover request sent by the first base station to a second base station
- the PLMN list used the second base station is a base station accessed by the second terminal, the PLMN identifier of the cell accessed by the second terminal belongs to the authorized PLMN list, and the handover request is used to request that the second The network access mode of a terminal is switched to accessing the network through a Sidelink with the second terminal.
- an embodiment of the present application provides a computer device, the computer device includes a processor, a memory, and a transceiver, the memory stores a computer program, and the computer program is used to be executed by the processor to The foregoing network access switching method is implemented.
- an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to implement the foregoing network access switching method.
- a computer program product comprising computer instructions stored on a computer readable storage medium.
- the processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the above-mentioned network access switching method.
- a chip is provided, and the chip is used to run in a computer device, so that the computer device executes the above network access switching method.
- a computer program is provided, the computer program is executed by a processor of a computer device, so as to implement the above method for network access switching.
- the first terminal corresponds to an authorized land public mobile communication network PLMN list, and when the PLMN identifier of the cell accessed by the second terminal belongs to the authorized PLMN list, the base station accessed by the first terminal can send a message to the base station accessed by the second terminal.
- Handover request so that the network access mode of the first terminal can be switched to access the network through the Sidelink with the second terminal; in the above solution, after switching the network access mode of one terminal to another In the process of the terminal accessing the network through the relay, it can support the change of accessing the base station, thereby expanding the Relay Sidelink switching scenario and improving the efficiency of the terminal switching to access the network through another terminal.
- FIG. 1 is a schematic diagram of an implementation environment shown in an exemplary embodiment of the present application
- Fig. 2 is a system architecture diagram of a U2N relay shown in an exemplary embodiment of the present application
- FIG. 3 is a schematic diagram of a relay UE discovery process shown in an exemplary embodiment of the present application
- FIG. 4 is a schematic diagram of another relay UE discovery process shown in an exemplary embodiment of the present application.
- Fig. 5 is a flow chart showing a network access switching method according to an exemplary embodiment
- Fig. 6 is a flow chart showing a network access switching method according to an exemplary embodiment
- Fig. 7 is a flow chart showing a network access switching method according to an exemplary embodiment
- Fig. 8 is a flow chart showing a network access switching method according to an exemplary embodiment
- FIG. 9 is a schematic diagram of a PLMN list configuration involved in the embodiment shown in FIG. 8;
- FIG. 10 is a schematic diagram of a handover process involved in the embodiment shown in FIG. 8;
- FIG. 11 is a schematic diagram of another handover process involved in the embodiment shown in FIG. 8;
- FIG. 12 is a schematic diagram of path switching of the remote UE involved in the embodiment shown in FIG. 8;
- Fig. 13 is a block diagram of a network access switching device according to an exemplary embodiment
- Fig. 14 is a block diagram of a network access switching device according to an exemplary embodiment
- Fig. 15 is a schematic structural diagram of a computer device provided by an embodiment of the present application.
- FIG. 1 is a schematic diagram of an implementation environment involved in a service access method shown in an exemplary embodiment of the present application. As shown in FIG. 1 , the implementation environment may include: a user equipment 110 and a base station 120 .
- the user equipment 110 includes a user equipment 110a, a user equipment 110b, and a user equipment 110c
- the base station 120 includes a base station 120a, a base station 120b, and a base station 120c; the user equipment 110a accesses the network through the base station 120b, and the user equipment 110b accesses the network through the base station 120c.
- the user equipment 110 is a wireless communication device that supports multiple radio access technologies for sidelink transmission.
- the user equipment 110 may support a cellular mobile communication technology, for example, may support a fifth generation mobile communication technology (the 5th Generation mobile communication, 5G) technology.
- the user equipment 110 may also support a next-generation mobile communication technology of 5G technology.
- sidelink transmission can be directly performed between two user equipments 110; for example, in the above-mentioned FIG. 1, sidelink transmission can be performed between the user equipment 110c and the user equipment 110b;
- user equipment 110b may serve as a relay (Relay) to provide network access services for user equipment 110c, and this situation is also called a relay sidelink scenario.
- Relay relay
- FIG. 1 only takes the implementation environment including 3 user equipments and 3 base stations as an example for introduction and description, and the embodiment of the present application does not limit the number of user equipments and base stations in the implementation environment.
- the user equipment 110 may be a vehicle communication device, for example, a trip computer with a wireless communication function, or a wireless communication device connected externally to the trip computer.
- the user equipment 110 may also be a roadside device, for example, may be a street lamp, a signal lamp, or other roadside devices with a wireless communication function.
- user equipment 110 may also be user terminal equipment, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal, for example, it may be a portable, pocket, hand-held, computer built-in or vehicle-mounted mobile phone. device.
- Station Station, STA
- subscriber unit subscriber unit
- subscriber station subscriber station
- mobile station mobile station
- mobile station mobile
- remote station remote station
- access terminal access terminal
- a user device user terminal
- a user agent user agent
- user device user device
- user terminal User Equipment
- the user equipment 110 may be a mobile terminal such as a smart phone, a tablet computer, or an e-book reader, or may be a smart wearable device such as smart glasses, a smart watch, or a smart bracelet.
- the base station 120 may be a network side device in a wireless communication system.
- the wireless communication system may also be a 5G system, also known as a New Radio (New Radio, NR) system.
- the wireless communication system may also be a next-generation system of the 5G system.
- the base station 120 may be a base station (gNB) adopting a centralized distributed architecture in the 5G system.
- the base station 120 adopts a centralized distributed architecture it usually includes a centralized unit (Central Unit, CU) and at least two distributed units (Distributed Unit, DU).
- the centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, radio link layer control protocol (Radio Link Control, RLC) layer, media access control (Media Access Control, MAC) layer protocol stack;
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC media access control
- a physical (Physical, PHY) layer protocol stack is set in the unit, and the embodiment of the present disclosure does not limit the specific implementation manner of the base station 120 .
- a wireless connection may be established between the base station 120 and the user equipment 110 through a wireless air interface.
- the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; or, the wireless air interface can also be a wireless air interface based on a 5G next-generation mobile communication network technology standard .
- 5G fifth-generation mobile communication network technology
- the foregoing wireless communication system may further include a network management device 130 .
- the network management device 130 may be a core network device in the wireless communication system, for example, the network management device 130 may include an access and mobility management (Access and Mobility Management Function, AMF) unit, a session management function (Session Management Function, SMF) unit, User Plane Function (UPF) unit, Policy Control Function (Policy Control Function, PCF) unit, Unified Data Management (UDM) unit, etc.
- AMF Access and Mobility Management Function
- SMF Session Management Function
- UPF User Plane Function
- PCF Policy Control Function
- UDM Unified Data Management
- NCIS Network Controlled Interactive Services
- NCIS services are mainly aimed at augmented reality (Augmented Reality, AR)/virtual reality (Virtual Reality, VR), games and other applications, and have high requirements on service quality such as speed, delay, packet loss rate, and high-speed codec.
- AR Augmented Reality
- VR Virtual Reality
- service quality such as speed, delay, packet loss rate, and high-speed codec.
- the rate of 10Gbps needs to be achieved, and the packet loss rate cannot exceed 1/10 -4 (that is, only one packet loss is allowed for every 10,000 data packets).
- the session established for the NCIS service is an NCIS session, and UEs in the same NCIS session can be considered to form an NCIS group, for example, teaming up in a game.
- U2N relay uses a relay terminal (relay UE) to relay and transmit data for a non-relay terminal (also called a remote terminal (remote UE)), so that the remote UE can communicate with the network.
- relay UE relay terminal
- remote UE remote terminal
- Fig. 2 is a system architecture diagram of a U2N relay shown in an exemplary embodiment of the present application.
- a connection based on the PC5 interface (that is, a PC5 connection) is established between the non-relay terminal 21 (remote UE) and the relay terminal 22 (relay UE) in the relay side uplink scenario.
- a Uu interface-based connection is established between the relay terminal 22 and a 5G radio access network (NG Radio Access Network, NG-RAN) in the 5G network.
- the 5G core network in the 5G network is connected to the data network (Data Network, DN) through the connection based on the N6 interface.
- Data Network Data Network
- a PC5 link is established between the Remote UE and the relay UE, and the relay UE provides Layer3 (layer 3) U2N relay services for the Remote UE (that is, the IP address of the Remote UE is configured by the relay UE), and the relay UE uses group A data unit (Packet Data Unit, PDU) session (session) relays data from the remote UE or data sent to the remote UE for the remote UE.
- Layer3 layer 3
- PDU Packet Data Unit
- Each PDU session corresponds to a session type, such as: IPv4 (Internet Protocol version 4, Internet Protocol version 4), IPv6 (Internet Protocol version 6, Internet Protocol version 6), IPv4v6, Ethernet, Unstructured, etc.
- Data corresponding to a session type can be transmitted using the PDU session corresponding to the session type.
- Configuration parameters may come from a policy control function (Policy Control Function, PCF) unit or an application server, or, these configuration parameters may also be pre-configured on a terminal or in a Subscriber Identity Module (Subscriber Identity Module, SIM) card.
- Policy Control Function Policy Control Function
- SIM Subscriber Identity Module
- Relay discovery can have the following methods: Model A discovery process or model B discovery process.
- Fig. 3 is a schematic diagram of a relay UE discovery process shown in an exemplary embodiment of the present application.
- the Model A discovery process is that the relay UE actively broadcasts the relay service code (Relay Service Code, RSC) that can provide relay services. After the Remote UE receives the RSC, if the RSC is the RSC it needs, Then it is determined that a suitable relay UE is found. For example, in FIG.
- RSC relay Service Code
- the relay UE that is, UE1 actively sends an announcement message 31 to each remote UE (that is, UE2 to UE5), the announcement message 31 includes the RSC of UE1, and a UE among UE2 to UE5 receives the announcement message After 31, when it is determined that the RSC in the announcement message 31 is the RSC required by the user, UE1 is used as a suitable relay UE.
- Fig. 4 is a schematic diagram of another relay UE discovery process shown in an exemplary embodiment of the present application.
- the discovery process of model B is that the remote UE first sends the RSC it needs. If there is a relay UE around that can support the RSC, the relay UE will reply to the remote UE. At this time, the remote UE is sure to find a suitable relay UE .
- the remote UE i.e. UE1 sends a request message 41 to the surrounding UEs (i.e. UE2 to UE5), the request message 41 contains the RSC required by UE1, and after receiving the request message 41, UE2 and UE3 find that they If the RSC is supported, a response message 42a and a response message 42b are replied to UE1, and UE1 regards UE2 and UE3 as appropriate relay UEs.
- a PC5 connection can be established between the relay UE and the remote UE.
- the intra-gNB scenario is considered for the U2N relay switching scenario, that is, the gNB remains unchanged before and after switching.
- intra-gNB also limits the U2N relay handover scenario. For example, when the Remote UE moves out of the coverage of the current gNB, it cannot directly perform U2N relay handover.
- the subsequent embodiments of this application provide a method for implementing U2N relay switching between different base stations, so that the Remote UE can directly switch to access the network through another gNB corresponding relay terminal (relay UE) .
- Fig. 5 is a flow chart showing a network access handover method according to an exemplary embodiment.
- the network access handover method may be executed by a first base station, where the first base station is a base station accessed by a first terminal, for example,
- the first base station may be the base station 120 in the implementation environment shown in FIG. 1 .
- the method may include the following steps.
- Step 501 according to the authorized land public mobile communication network PLMN list of the first terminal, send a handover request to the second base station, the second base station is the base station accessed by the second terminal; the PLMN identifier of the cell accessed by the second terminal belongs to the authorized In the PLMN list, the switching request is used to request switching the network access mode of the first terminal to accessing the network through a Sidelink with the second terminal.
- the first terminal corresponds to an authorized land public mobile communication network PLMN list
- the PLMN identifier of the cell accessed by the second terminal belongs to the authorized PLMN list
- the first terminal The accessed base station can send a switching request to the base station accessed by the second terminal, so that the network access mode of the first terminal can be switched to accessing the network through the Sidelink with the second terminal; in the above solution, In the process of switching the network access mode of a terminal to another terminal as a relay to access the network, it can support the change of accessing the base station, thereby expanding the Relay Sidelink switching scenario, and improving the terminal switching to pass through another terminal access network efficiency.
- Fig. 6 is a flow chart showing a network access handover method according to an exemplary embodiment.
- the network access handover method may be performed by a second base station, where the second base station is a base station accessed by a second terminal, for example,
- the second base station may be the base station 120 in the implementation environment shown in FIG. 1 .
- the method may include the following steps.
- Step 601 receiving the handover request sent by the first base station according to the authorized PLMN list of the first terminal, the first base station is the base station accessed by the first terminal, the PLMN identifier of the cell accessed by the second terminal belongs to the authorized PLMN list, and the handover request is used
- the request is to switch the network access mode of the first terminal to access the network through the Sidelink with the second terminal.
- the first terminal corresponds to an authorized land public mobile communication network PLMN list
- the second terminal The accessed base station can receive the switching request sent by the base station accessed by the first terminal, so that the network access mode of the first terminal can be switched to accessing the network through the Sidelink with the second terminal; in the above scheme, In the process of switching the network access mode of a terminal to another terminal as a relay to access the network, it can support the change of accessing the base station, thereby expanding the Relay Sidelink switching scenario, and improving the terminal switching to pass through another terminal access network efficiency.
- the PLMN identifier of the first terminal may be provided by the core network device to the first base station accessed by the first terminal.
- Fig. 7 is a flowchart showing a method for switching network access according to an exemplary embodiment, and the method for switching network access can be executed by a core network device. As shown in Fig. 7, the method may include the following steps.
- Step 701 send the authorized PLMN list of the first terminal to the first base station, the first base station is the base station accessed by the first terminal, the authorized PLMN list is the PLMN list used by the first base station to send the handover request to the second base station, and the second base station
- the base station is the base station accessed by the second terminal, and the PLMN identifier of the cell accessed by the second terminal belongs to the authorized PLMN list.
- a sidelink is used to access the network.
- the core network equipment can provide the authorized land public mobile communication network PLMN list to the base station accessed by the first terminal.
- the PLMN identifier of the cell accessed by the second terminal belongs to the
- the base station accessed by the first terminal can send a switching request to the base station accessed by the second terminal, so that the network access mode of the first terminal can be switched to the Sidelink link between the first terminal and the second terminal.
- Access to the network in the above scheme, in the process of switching the network access mode of one terminal to another terminal as a relay to access the network, it can support the change of access to the base station, thereby expanding the Relay Sidelink switching scenario and improving This improves the efficiency of switching a terminal to access the network through another terminal.
- Fig. 8 is a flow chart showing a network access handover method according to an exemplary embodiment.
- the network access handover method may be performed by the first base station, the second base station, and the core network equipment in the relay sidelink scenario.
- the first base station and the second base station may be the base station 120 in the implementation environment shown in FIG. 1 .
- the method may include the following steps.
- Step 801 the core network device sends the authorized PLMN list of the first terminal to the first base station; correspondingly, the first terminal receives the authorized PLMN list sent by the core network device.
- the above-mentioned first base station may be a base station currently accessed by the first terminal.
- the above base station currently accessed by the first terminal may refer to the base station directly accessed by the first terminal, that is, the first terminal accesses the base station through the Uu interface with the first base station. network.
- the above-mentioned base station currently accessed by the first terminal may also refer to a base station indirectly accessed by the first terminal.
- a PC5 connection is established between the first terminal and the third terminal.
- a connection based on the Uu interface is established between the three terminals and the first base station; the first terminal uses the third terminal as a relay to access the network (that is, a U2N relay scenario).
- the core network device is an AMF unit, and the core network device sends the authorized PLMN list of the first terminal to the first base station, including:
- the AMF unit sends the authorized PLMN list to the first base station through the initial context establishment request; correspondingly, the first base station receives the authorized PLMN list sent by the AMF unit through the initial context establishment request.
- the authorized PLMN list is carried by the proximity service authorization information in the initial context establishment request;
- the list of authorized PLMNs is carried through the movement restriction list in the initial context establishment request;
- the authorized PLMN list is carried by an independent information element in the initial context establishment request.
- FIG. 9 shows a schematic diagram of a PLMN list configuration involved in the embodiment of the present application.
- the process for the AMF unit to configure the PLMN list to the source base station (that is, the first base station) of the U2N relay handover is as follows:
- PC5 connection establishment (PC5 connection establishment) is performed between the Remote UE and the Relay UE.
- the Remote UE uses the Relay UE as a relay, and performs access stratum (Access Stratum, AS) connection setup (AS connection setup) with the NG-RAN (corresponding to the first base station).
- access stratum Access Stratum, AS
- AS connection setup access stratum connection setup
- the Remote UE sends a non-access stratum (Non-AS, NAS) message to the AMF by using the Relay UE as a relay.
- Non-AS non-access stratum
- the NAS message may be a registration request (Registration Request) message or a service request (Service Request) message.
- the AMF sends a Nudm_SDM_Get message to the UDM.
- the UDM returns a Nudm_SDM_Get Response message to the AMF.
- the AMF sends a UE context setup request (UE Context Setup Request) to the NG-RAN.
- UE Context Setup Request UE Context Setup Request
- the UE context establishment request includes an authorized PLMN list (Authorized PLMN list).
- the NG-RAN returns a UE context setup response (UE Context Setup Response) to the AMF.
- UE context setup response UE Context Setup Response
- the AMF sends a NAS message to the Remote UE.
- the NAS message may be a Registration Accept (Registration Accept) message or a Service Accept (Service Accept) message.
- the Remote UE sends the NAS message to the AMF through the Relay UE as a relay.
- the NAS message may be a registration complete (Registration Complete) message.
- the first base station may also receive the authorized PLMN list sent by the AMF unit through the N2 path switching request response.
- the first terminal may handover from the third base station to the first base station before step 801, and the first terminal may handover from the third base station to the first base station during the handover process from the third base station to the first base station , the AMF may send the authorized PLMN list of the first terminal to the first base station through an N2 path switching request response.
- the third base station may also send the authorized PLMN list of the first terminal to the first base station.
- Step 802 the first base station sends a handover request to the second base station according to the PLMN list authorized by the first terminal; correspondingly, the second base station receives the handover request.
- the second base station is the base station accessed by the second terminal; the PLMN identifier of the cell accessed by the second terminal belongs to the authorized PLMN list; Sidelinks between sidelinks access the network.
- the first base station before the first base station sends the handover request to the second base station according to the authorized PLMN list of the first terminal, it further includes:
- relay terminal information reported by the first terminal, where the relay terminal information is used to indicate at least one candidate relay terminal discovered by the first terminal;
- a handover request is sent to the second base station accessed by the second terminal.
- the first terminal may report to the first base station the relevant information of the candidate relay terminal it discovers (that is, the above-mentioned relay terminal information), which may include the identity of the candidate relay terminal, and the candidate relay terminal The serving cell ID and so on. Subsequently, when the first base station determines that the first terminal needs to be handed over, it may determine the above-mentioned second terminal from each candidate relay terminal discovered by the first terminal according to the authorized PLMN list of the first terminal.
- the relevant information of the candidate relay terminal it discovers that is, the above-mentioned relay terminal information
- the candidate relay terminal The serving cell ID and so on.
- the first base station may select each candidate relay terminal whose serving cell ID belongs to the authorized PLMN list according to the authorized PLMN list of the first terminal, and select the relay terminal corresponding to the first terminal from each candidate relay terminal whose serving cell ID belongs to the authorized PLMN list.
- a terminal whose signal strength between terminals satisfies the handover condition (for example, the signal strength is the highest and greater than the handover threshold) is used as the second terminal.
- the signal strength between the candidate relay terminal and the first terminal may be carried by the above relay terminal information, or may be reported by the first terminal by other messages other than the relay terminal information.
- the above-mentioned candidate relay terminal may be a terminal satisfying the relay selection criterion of the first terminal, for example, the above-mentioned candidate relay terminal may be a relay terminal whose relay service code (Relay Service Code) meets the requirements of the first terminal.
- relay service code Relay Service Code
- the first terminal accesses the network in a direct connection mode, before the first base station sends the handover request to the second base station according to the authorized PLMN list of the first terminal, further includes:
- the first base station receives the first measurement information reported by the first terminal; the first measurement information is used to indicate the wireless signal quality between the first terminal and the first base station;
- the first base station sends a handover request to the second base station according to the authorized PLMN list of the first terminal, including:
- the first base station When the first measurement information satisfies the first handover condition, the first base station sends a handover request to the second base station according to the authorized PLMN list.
- the first handover condition includes: the radio signal quality between the first terminal and the first base station is lower than a first signal quality threshold.
- the first terminal when the first terminal directly accesses the base station, the first terminal may also report to the first base station the quality of the wireless signal between the first terminal and the first base station (for example, the first terminal may report Uu measurement result between a base station), when the first base station determines that the wireless signal quality between the first terminal and the first terminal meets the handover condition, for example, when the wireless signal quality is lower than a certain wireless signal quality threshold, it can trigger the authorization according to the PLMN list.
- the first terminal accesses the network in a non-direct connection mode, according to the authorized PLMN list of the first terminal, before the first base station sends the handover request to the second base station, further includes:
- the first base station receives the second measurement information reported by the first terminal; the second measurement information is used to indicate the wireless signal quality between the first terminal and the third terminal; a relay Sidelink connection is established between the first terminal and the third terminal ;
- the first base station sends a handover request to the second base station according to the authorized PLMN list of the first terminal, including:
- the first base station When the second measurement information satisfies the second handover condition, the first base station sends a handover request to the second base station according to the authorized PLMN list.
- the second handover condition includes: the wireless signal quality between the first terminal and the third terminal is lower than a second signal quality threshold.
- the first terminal when the first terminal indirectly accesses the base station through the third terminal, the first terminal may also report to the first base station the wireless signal quality between the first terminal and the third terminal (for example, the first The terminal can report the PC5 measurement result with the third terminal), when the first base station determines that the wireless signal quality between the first terminal and the second terminal meets the handover condition, for example, the wireless signal quality is lower than a certain wireless signal quality threshold , the step of sending a handover request to the second base station according to the authorized PLMN list may be triggered.
- the first base station may send the authorized PLMN list to the second base station; correspondingly, the second base station may receive the authorized PLMN list sent by the first base station.
- the authorized PLMN list of the first terminal may also be provided to The second base station, so that when the second base station subsequently switches the data path of the first terminal again, it selects a new target base station for U2N relay switching according to the authorized PLMN list.
- the first base station sends the authorized PLMN list to the second base station, including:
- the first base station may send the authorized PLMN list to the second base station.
- the second base station receives the authorized PLMN list sent by the first base station during the preparation phase of switching the network access mode of the first terminal to accessing the network through the Sidelink with the second terminal.
- the first base station when the first base station determines to send a handover request to the second base station to request that the first terminal access the network through the second terminal, in the handover preparation stage, the first base station may send the above The authorized PLMN list of the first terminal is sent to the second base station.
- the first base station sends the authorized PLMN list to the second base station, including:
- the first base station sends the authorized PLMN list to the second base station through the source-to-target transparent container; correspondingly, the second base station receives the authorized PLMN list sent by the first base station through the source-to-target transparent container.
- the first terminal when the first base station determines to send a handover request to the second base station to request that the first terminal be switched to access the network through the second terminal, the first terminal can pass the target transparent container Source to Target The transparent container sends the authorized PLMN list of the first terminal to the second base station.
- the core network device may send the authorized PLMN list to the second base station; correspondingly, the second base station receives the authorized PLMN list sent by the core network device.
- the foregoing process of providing the authorized PLMN list of the first terminal to the second base station may also be performed by a core network device.
- the second base station may receive the authorized PLMN list of the first terminal sent by the AMF unit.
- the aforementioned core network device may be a source AMF unit corresponding to the first base station, and the core network device sends an authorized PLMN list to the second base station, including:
- the source AMF unit corresponding to the first base station sends the authorized PLMN list to the target AMF unit corresponding to the second base station, so that the target AMF unit sends the authorized PLMN list to the second base station; correspondingly, the second base station receives the PLMN list corresponding to the second base station An authorized PLMN list of the target AMF unit; the authorized PLMN list is sent to the target AMF unit by the source AMF unit corresponding to the first base station.
- FIG. 10 shows a schematic diagram of a handover process involved in this embodiment of the present application. As shown in Figure 10, the switching process is as follows:
- S1001 perform handover preparation (Handover preparation) among UE (first terminal), source NG-RAN (first base station) and target NG-RAN (second base station).
- Handover preparation handover preparation among UE (first terminal), source NG-RAN (first base station) and target NG-RAN (second base station).
- the source NG-RAN performs data forwarding to the target NG-RAN, and sends a radio access network (Radio Access Network, RAN) usage data report (RAN Usage data report) to the AMF; the target NG-RAN sends the AMF sends N2 Path Switch Request (N2Path Switch Request).
- RAN Radio Access Network
- N2Path Switch Request N2 Path Switch Request
- AMF sends Nsmf_PDUSession_UpdateSMContext Request to SMF.
- the SMF sends an N4 session modification request (N4 Session Modification Request) to the UPF.
- N4 Session Modification Request N4 Session Modification Request
- the UPF sends an N4 session modification response (N4 Session Modification Response) to the SMF.
- N4 Session Modification Response N4 Session Modification Response
- the UPF sends an N3 end marker (N3End marker) to the source NG-RAN.
- the source NG-RAN sends the N3 end marker to the target NG-RAN.
- the UPF sends downlink data (Downlink data) to the UE through the target NG-RAN.
- SMF sends Nsmf_PDUSession_UpdatSMContext Response to AMF.
- the AMF sends an N2 Path Switch Request Ack (N2Path Switch Request Ack) to the target NG-RAN.
- N2Path Switch Request Ack N2Path Switch Request Ack
- the target NG-RAN sends a release resource message (Release Resources) to the source NG-RAN.
- a release resource message Release Resources
- the source NG-RAN (the first base station, also called the source gNB) sends the UE's authorized PLMN list (authorized PLMN ID list for remote UE) to the target NG-RAN RAN (second base station, also called target gNB).
- the AMF sends the authorized PLMN ID list for remote UE to the target gNB in step S1010.
- FIG. 11 shows a schematic diagram of another handover process involved in the embodiment of the present application. As shown in Figure 11, the switching process is as follows:
- the UE performs uplink/downlink user plane data transmission through the source NG-RAN.
- the source NG-RAN When triggering a relocation decision (Decision to trigger a relocation via N2) through N2, the source NG-RAN sends a handover requirement (Handover Required) to the source AMF.
- a relocation decision Decision to trigger a relocation via N2
- the source NG-RAN sends a handover requirement (Handover Required) to the source AMF.
- the source AMF selects a target AMF (T-AMF Selection).
- the source AMF sends a Namf_Communication_CreateUEContext Request to the target AMF.
- the target AMF sends an Nsmf_PDUSession_UpdateSMContext Request to the SMF.
- the SMF selects UPF (UPF Selection).
- the SMF sends an N4 session modification request (N4Session Modification Request) to the PSA UPF.
- N4Session Modification Request N4Session Modification Request
- the PSA UPF sends an N4 session modification response (N4 Session Modification Response) to the SMF.
- N4 Session Modification Response N4 Session Modification Response
- the SMF sends an N4 session establishment request (N4Session Establishment Request) to the target UPF.
- N4Session Establishment Request N4Session Establishment Request
- the target UPF sends an N4 session establishment response (N4 Session Establishment Response) to the SMF.
- N4 Session Establishment Response N4 Session Establishment Response
- the SMF sends Nsmf_PDUSession_UpdateSMContext Response to the target AMF.
- the target AMF sends a handover request (Handover Request) to the target NG-RAN.
- the target NG-RAN sends a Handover Request Acknowledge (Handover Request Acknowledge) to the target AMF.
- the target AMF sends a Nsmf_PDUSession_UpdateSMContext Request to the SMF.
- the SMF sends an N4 session modification request to the target UPF.
- the target UPF sends an N4 session modification response to the SMF.
- the SMF sends an N4 session modification request to the source UPF.
- the source UPF sends an N4 session modification response to the SMF.
- the SMF sends Nsmf_PDUSession_UpdateSMContext Response to the target AMF.
- the target AMF sends a Namf_Communication_CreateUEContext Response to the source AMF.
- the source gNB sends the authorized PLMN ID list for remote UE to the target gNB through the Source to Target transparent container; or the source AMF sends the authorized PLMN ID list for remote UE to the target AMF through step S1104 , and then the target AMF sends the authorized PLMN ID list for remote UE to the target gNB in step S1113.
- the AMF sends the authorized PLMN ID list for remote UE to the target gNB.
- Step 803 the first base station sends a first connection establishment message to the first terminal, where the first connection establishment message is used to instruct the first terminal to establish a Sidelink connection with the second terminal.
- Step 804 the second base station sends a second connection establishment message to the second terminal, where the second connection establishment message is used to instruct the second terminal to establish a Sidelink connection with the first terminal.
- a PC5 connection can be established between the first terminal and the second terminal, and the first terminal uses the second terminal Access the network for the relay.
- FIG. 12 shows a schematic diagram of path switching of the remote UE involved in the embodiment of the present application.
- the process can be as follows:
- the remote UE performs measurement configuration and reporting with the source gNB (Measurement configuration and reporting).
- the U2N Remote UE reports the candidate U2N Relay UE and Uu measurement data.
- the report includes at least the U2N Relay UE ID and the serving cell ID of the U2N Relay UE.
- the source gNB decides to switch the remote UE to a target relay UE and target gNB according to the authorized PLMN list of the remote UE (Decision of switching to a target relay UE and target gNB).
- the source gNB decides to initiate switch the U2N Remote UE to a target U2N Relay UE.
- the gNB selects the appropriate relay according to the authorized PLMN ID list.
- this relay can be selected.
- the source gNB initiates a Handover Request message to the target gNB.
- This message can be sent directly to the target gNB, or forwarded to the target gNB through the core network.
- the target gNB can send an RRC Reconfiguration message to the target U2N Relay UE.
- the source gNB sends an RRC reconfiguration message (RRC Reconfiguration message) to the remote UE.
- RRC Reconfiguration message RRC Reconfiguration message
- the source gNB sends an RRC Reconfiguration message to the U2N Remote UE.
- PC5 connection establishment PC5 connection establishment
- the U2N Remote UE establishes a PC5 connection with the target U2N Relay UE.
- the remote UE sends an RRC reconfiguration complete message (RRC Reconfiguration Complete message) to the target gNB through the relay UE.
- RRC Reconfiguration Complete message RRC Reconfiguration Complete message
- the U2N Remote UE completes the path switching, and sends an RRC Reconfiguration Complete message to the gNB through the relay UE; thus, the data path between the remote UE and the gNB is switched from the direct connection mode to the non-direct connection mode.
- the way that the gNB uses the authorized PLMN ID list to select the relay UE is similar to the scheme shown in Figure 12 above, and will not be repeated here.
- Fig. 13 is a block diagram showing a network access switching device 1300 according to an exemplary embodiment.
- the apparatus shown in FIG. 13 above can execute all or part of the steps performed by the first base station in any of the embodiments in FIG. 5 , FIG. 6 , FIG. 7 and FIG. 8 ; the first base station is the base station accessed by the first terminal.
- the device may include:
- the sending module 1301 is configured to send a handover request to a second base station according to the authorized land public mobile communication network PLMN list of the first terminal, the second base station is a base station accessed by the second terminal, and the second terminal
- the PLMN identifier of the accessed cell belongs to the authorized PLMN list, and the switch request is used to request to switch the network access mode of the first terminal to a Sidelink connection with the second terminal. into the network.
- the device further includes:
- the receiving module is configured to receive the relay terminal information reported by the first terminal before the sending module sends a handover request to the second base station according to the authorized PLMN list of the first terminal, and the relay terminal information uses Indicating at least one candidate relay terminal discovered by the first terminal;
- the sending module 1301 is configured to, according to the authorized PLMN list, determine the second terminal from at least one of the candidate relay terminals; and send a handover request to the second base station accessed by the second terminal .
- the device further includes:
- a receiving module configured to receive the first terminal before the sending module sends a handover request to the second base station according to the authorized PLMN list of the first terminal when the first terminal accesses the network in a direct connection mode.
- First measurement information reported by the terminal where the first measurement information is used to indicate the quality of a wireless signal between the first terminal and the first base station;
- the sending module 1301 is configured to send the handover request to the second base station according to the authorized PLMN list when the first measurement information satisfies a first handover condition.
- the first handover condition includes: a wireless signal quality between the first terminal and the first base station is lower than a first signal quality threshold.
- the device further includes:
- a receiving module configured to receive the second base station before the sending module sends a handover request to the second base station according to the authorized PLMN list of the first terminal when the first terminal accesses the network in an indirect way; Second measurement information reported by a terminal, where the second measurement information is used to indicate the quality of a wireless signal between the first terminal and a third terminal, where a neutral network is established between the first terminal and the third terminal Following the Sidelink connection;
- the sending module 1301 is configured to send the handover request to the second base station according to the authorized PLMN list when the second measurement information satisfies a second handover condition.
- the second handover condition includes: the wireless signal quality between the first terminal and the third terminal is lower than a second signal quality threshold.
- the sending module 1301 is further configured to send a first connection establishment message to the first terminal, where the first connection establishment message is used to instruct the first terminal to establish a connection with the Sidelink connection between the second terminal.
- the device further includes:
- the receiving module is configured to receive the authorized PLMN list sent by the core network device before the sending module sends a handover request to the second base station according to the authorized PLMN list of the first terminal.
- the receiving module is configured to:
- the authorized PLMN list is carried by the proximity service authorization information in the initial context establishment request;
- the authorized PLMN list is carried by the movement restriction list in the initial context establishment request;
- the authorized PLMN list is carried by an independent information element in the initial context establishment request.
- the sending module 1301 is further configured to send the authorized PLMN list to the second base station.
- the sending module 1301 is configured to switch the network access mode of the first terminal to accessing the network through a Sidelink with the second terminal In the preparation stage, the authorized PLMN list is sent to the second base station.
- the sending module 1301 is configured to send the authorized PLMN list to the second base station through a source-to-target transparent container.
- the apparatus shown in FIG. 13 may execute all or part of the steps performed by the core network equipment base station in the embodiment shown in FIG. 7 or 8 .
- the device may include:
- the sending module 1301 is configured to send an authorized PLMN list of the first terminal to a first base station, the first base station is a base station accessed by the first terminal, and the authorized PLMN list is a handover list sent by the first base station to a second base station.
- the second base station is a base station accessed by the second terminal, the PLMN identifier of the cell accessed by the second terminal belongs to the authorized PLMN list, and the handover request is used to request that the The network access mode of the first terminal is switched to accessing the network through a Sidelink with the second terminal.
- the core network device is an AMF unit
- the sending module 1301 is configured to send the authorized PLMN list to the first base station through an initial context establishment request.
- the authorized PLMN list is carried by the proximity service authorization information in the initial context establishment request;
- the authorized PLMN list is carried by the movement restriction list in the initial context establishment request;
- the authorized PLMN list is carried by an independent information element in the initial context establishment request.
- the sending module 1301 is further configured to send the authorized PLMN list to the second base station.
- the apparatus is used for core network equipment, and the core network equipment is a source AMF unit corresponding to the first base station,
- the sending module 1301 is configured to send the authorized PLMN list to a target AMF unit corresponding to the second base station, so that the target AMF unit sends the authorized PLMN list to the second base station.
- Fig. 14 is a block diagram showing a network access switching device 1400 according to an exemplary embodiment.
- the apparatus shown in FIG. 14 above can execute all or part of the steps performed by the second base station in any of the embodiments in FIG. 5 , FIG. 6 , FIG. 7 and FIG. 8 ; the second base station is the base station accessed by the second terminal.
- the device may include:
- the receiving module 1401 is configured to receive a handover request sent by the first base station according to the authorized PLMN list of the first terminal, the first base station is the base station accessed by the first terminal, and the PLMN of the cell accessed by the second terminal.
- the identification belongs to the authorized PLMN list, and the switching request is used to request switching the network access mode of the first terminal to accessing the network through a Sidelink with the second terminal.
- the device further includes:
- a sending module configured to send a second connection establishment message to the second terminal, where the second connection establishment message is used to instruct the second terminal to establish a Sidelink connection with the first terminal.
- the receiving module 1401 is further configured to receive the authorized PLMN list sent by the first base station.
- the receiving module 1401 is configured to receive a request from the first base station to switch the network access mode of the first terminal to the sidelink link with the second terminal.
- the receiving module 1401 is configured to receive the authorized PLMN list sent by the first base station through a source-to-target transparent container.
- the receiving module 1401 is further configured to receive the authorized PLMN list sent by the core network device.
- the receiving module 1401 is configured to receive the authorized PLMN list sent by the AMF unit.
- the receiving module 1401 is configured to receive the authorized PLMN list of the target AMF unit corresponding to the second base station, and the authorized PLMN list is composed of the authorized PLMN list corresponding to the first base station.
- the source AMF unit sends to the target AMF unit.
- the device provided by the above embodiment implements its functions, it only uses the division of the above functional modules as an example for illustration. In practical applications, the above function allocation can be completed by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
- FIG. 15 shows a schematic structural diagram of a computer device 1500 provided by an embodiment of the present application.
- the computer device 1500 may include: a processor 1501 , a transceiver 1502 and a memory 1503 .
- the processor 1501 includes one or more processing cores, and the processor 1501 executes various functional applications and information processing by running software programs and modules.
- Transceiver 1502 may include a receiver and a transmitter.
- the transceiver 1502 may include a wired communication component, and the wired communication component may include a wired communication chip and a wired interface (such as an optical fiber interface).
- the transceiver 1502 may also include a wireless communication component, and the wireless communication component may include a wireless communication chip and a radio frequency antenna.
- the memory 1503 may be connected to the processor 1501 and the transceiver 1502 .
- the memory 1503 may be used to store a computer program executed by the processor, and the processor 1501 is used to execute the computer program, so as to implement various steps performed by the base station or the core network device in the foregoing method embodiments.
- volatile or non-volatile storage device includes but not limited to: magnetic disk or optical disk, electrically erasable and programmable Read Only Memory, Erasable Programmable Read Only Memory, Static Anytime Access Memory, Read Only Memory, Magnetic Memory, Flash Memory, Programmable Read Only Memory.
- the transceiver 1502 is used to A communication network PLMN list, sending a handover request to a second base station, the second base station is a base station accessed by the second terminal, the PLMN identifier of the cell accessed by the second terminal belongs to the authorized PLMN list, and the handover request It is used for requesting to switch the network access mode of the first terminal to accessing the network through the Sidelink with the second terminal.
- the transceiver 1502 in the computer device 1500 For the process performed by the transceiver 1502 in the computer device 1500, reference may be made to the steps performed by the first base station in any of the methods shown in FIG. 5 , FIG. 6 , FIG. 7 and FIG. 8 .
- the transceiver 1502 is configured to receive the authorization of the first base station according to the first terminal.
- the transceiver 1502 in the computer device 1500 For the process performed by the transceiver 1502 in the computer device 1500, reference may be made to the steps performed by the second base station in any of the methods shown in FIG. 5 , FIG. 6 , FIG. 7 and FIG. 8 .
- the transceiver 1502 is configured to send the authorized PLMN list of the first terminal to the first base station, and the first base station is the first terminal's access base station, the authorized PLMN list is the PLMN list used by the first base station to send a handover request to the second base station, the second base station is the base station accessed by the second terminal, and the cell accessed by the second terminal.
- the PLMN identifier belongs to the authorized PLMN list, and the switching request is used to request switching the network access mode of the first terminal to accessing the network through a Sidelink with the second terminal.
- the embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to implement any of the above-mentioned steps in FIG. 5 , FIG. 6 , FIG. 7 and FIG. 8 .
- each step is performed by the first base station, the second base station, or the core network equipment.
- the present application also provides a computer program product including computer instructions stored in a computer-readable storage medium.
- the processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes any of the methods shown in Fig. 5, Fig. 6, Fig. 7 and Fig. 8 above, by Various steps performed by the first base station, the second base station, or the core network equipment.
- the present application also provides a chip, which is used to run in a computer device, so that the computer device executes any of the methods shown in Fig. 5, Fig. 6, Fig. 7 and Fig. 8 above, and the first base station , each step executed by the second base station or the core network equipment.
- the present application also provides a computer program, the computer program is executed by the processor of the computer device, so as to implement the method shown in any one of the above-mentioned Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the first base station, the second Steps performed by the base station or the core network equipment.
- the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof.
- the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
- Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
- a storage media may be any available media that can be accessed by a general purpose or special purpose computer.
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Abstract
一种网络接入切换方法、装置、设备及存储介质,属于无线通信技术领域。该方法由第一基站执行,第一基站是第一终端接入的基站;方法包括:根据第一终端的授权陆上公用移动通信网络PLMN列表,向第二基站发送切换请求(501),第二基站是第二终端接入的基站,第二终端接入的小区的PLMN标识属于授权PLMN列表,切换请求用于请求将第一终端的网络接入方式切换为通过与第二终端之间的侧行链路Sidelink接入网络。上述方案扩展了Relay Sidelink切换场景,提高了终端切换为通过另一个终端接入网络的效率。
Description
本公开涉及无线通信技术领域,特别涉及一种网络接入切换方法、装置、设备及存储介质。
侧行链路(Sidelink)技术是一种终端通过彼此之间的无线接口进行信息直连的近场通信技术。
5G系统(5th Generation System,5GS)中引入了中继侧行链路(Relay Sidelink)场景,在Relay Sidelink场景下,两个终端之间建立侧行链路连接时,一个终端可以作为中继,使得另一个终端能够接入网络。
发明内容
本公开提供一种网络接入切换方法、装置、设备及存储介质。所述技术方案如下:
一方面,提供了一种网络接入切换方法,所述方法由第一基站执行,所述第一基站是第一终端接入的基站;所述方法包括:
根据所述第一终端的授权陆上公用移动通信网络PLMN列表,向第二基站发送切换请求,所述第二基站是第二终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
一方面,提供了一种网络接入切换方法,所述方法由第二基站执行,所述第二基站是第二终端接入的基站;所述方法包括:
接收第一基站根据第一终端的授权PLMN列表发送的切换请求,所述第一基站是所述第一终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
一方面,提供了一种网络接入切换方法,所述方法由核心网设备执行,所述方法包括:
向第一基站发送第一终端的授权PLMN列表,所述第一基站是第一终端接入的基站,所述授权PLMN列表是所述第一基站向第二基站发送切换请求所使用的PLMN列表,所述第二基站是第二终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
另一方面,提供了一种网络接入切换装置,所述装置用于第一基站,所述第一基站是第一终端接入的基站;所述装置包括:
发送模块,用于根据所述第一终端的授权陆上公用移动通信网络PLMN列表,向第二基站发送切换请求,所述第二基站是第二终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
另一方面,提供了网络接入切换装置,所述装置用于第二基站,所述第二基站是第二终端接入的基站;所述装置包括:
接收模块,用于接收第一基站根据第一终端的授权PLMN列表发送的切换请求,所述第一基站是所述第一终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权 PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
另一方面,提供了网络接入切换装置,所述装置包括:
发送模块,用于向第一基站发送第一终端的授权PLMN列表,所述第一基站是第一终端接入的基站,所述授权PLMN列表是所述第一基站向第二基站发送切换请求所使用的PLMN列表,所述第二基站是第二终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
再一方面,本申请实施例提供了一种计算机设备,所述计算机设备包括处理器、存储器和收发器,所述存储器存储有计算机程序,所述计算机程序用于被所述处理器执行,以实现上述网络接入切换方法。
又一方面,本申请实施例还提供了一种计算机可读存储介质,所述存储介质中存储有计算机程序,所述计算机程序由处理器加载并执行以实现上述网络接入切换方法。
另一方面,提供了一种计算机程序产品,该计算机程序产品包括计算机指令,该计算机指令存储在计算机可读存储介质中。计算机设备的处理器从计算机可读存储介质读取该计算机指令,处理器执行该计算机指令,使得该计算机设备执行上述网络接入切换方法。
另一方面,提供了一种芯片,该芯片用于在计算机设备中运行,以使得所述计算机设备执行上述网络接入切换方法。
另一方面,提供了一种计算机程序,该计算机程序由计算机设备的处理器执行,以实现上述网络接入切换方法。
本公开的实施例提供的技术方案可以包括以下有益效果:
第一终端对应有授权陆上公用移动通信网络PLMN列表,当第二终端接入的小区的PLMN标识属于该授权PLMN列表时,第一终端接入的基站可以向第二终端接入的基站发送切换请求,使得第一终端的网络接入方式可以切换至通过与第二终端之间的侧行链路Sidelink接入网络;上述方案中,在将一个终端的网络接入方式切换至以另一个终端为中继接入网络的过程中,可以支持接入基站的改变,进而扩展了Relay Sidelink切换场景,提高了终端切换为通过另一个终端接入网络的效率。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性的,并不能限制本公开。
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本公开的实施例,并于说明书一起用于解释本公开的原理。
图1是本申请一示例性实施例示出的一种实施环境的示意图;
图2是本申请一示例性实施例示出的一种U2N relay的系统架构图;
图3是本申请一示例性实施例示出的一种relay UE发现流程示意图;
图4是本申请一示例性实施例示出的另一种relay UE发现流程示意图;
图5是根据一示例性实施例示出的一种网络接入切换方法的流程图;
图6是根据一示例性实施例示出的一种网络接入切换方法的流程图;
图7是根据一示例性实施例示出的一种网络接入切换方法的流程图;
图8是根据一示例性实施例示出的一种网络接入切换方法的流程图;
图9是图8所示实施例涉及的一种PLMN列表配置示意图;
图10是图8所示实施例涉及的一种切换过程示意图;
图11是图8所示实施例涉及的另一种切换过程示意图;
图12是图8所示实施例涉及的远端UE的路径切换示意图;
图13是根据一示例性实施例示出的一种网络接入切换装置的框图;
图14是根据一示例性实施例示出的一种网络接入切换装置的框图;
图15是本申请一个实施例提供的计算机设备的结构示意图。
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反,它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
应当理解的是,在本文中提及的“若干个”是指一个或者多个,“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
图1是本申请一示例性实施例示出的一种业务接入方法所涉及的实施环境的示意图,如图1所示,该实施环境可以包括:用户设备110和基站120。
其中,用户设备110包括用户设备110a、用户设备110b以及用户设备110c,基站120包括基站120a、基站120b和基站120c;用户设备110a通过基站120b接入网络,用户设备110b通过基站120c接入网络。
用户设备110是支持多种无线接入技术进行sidelink传输的无线通信设备。比如,用户设备110可以支持蜂窝移动通信技术,比如,可以支持第五代移动通信技术(the 5th Generation mobile communication,5G)技术。或者,用户设备110也可以支持5G技术的更下一代移动通信技术。
其中,两个用户设备110之间可以直接进行sidelink传输;比如,在上述图1中,用户设备110c与用户设备110b之间可以进行sidelink传输;可选的,上述图1中的用户设备110c与用户设备110b之间进行sidelink传输时,用户设备110b可以作为中继(Relay),为用户设备110c提供网络接入服务,这种情况也称为中继侧行链路场景。
其中,上述图1仅以实施环境中包含3个用户设备和3个基站为例进行介绍说明,本申请实施例对于实施环境中的用户设备和基站的数量不做限定。
例如,用户设备110可以是车载通信设备,比如,可以是具有无线通信功能的行车电脑,或者是外接行车电脑的无线通信设备。
或者,用户设备110也可以是路边设备,比如,可以是具有无线通信功能的路灯、信号灯或者其它路边设备。
或者,用户设备110也可以是用户终端设备,如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机,例如,可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。例如,站(Station,STA)、订户单元(subscriber unit)、订户站(subscriber station)、移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点、远程终端(remote terminal)、接入终端(access terminal)、用户装置(user terminal)、用户代理(user agent)、用户设备(user device)、或用户终端(User Equipment,UE)。具体比如,用户设备110可以是智能手机、平板电脑、电子书阅读器等移动终端,或者,可以是智能眼镜、智能手表或者智能手环等智能可穿戴设备。
基站120可以是无线通信系统中的网络侧设备。其中,该无线通信系统也可以是5G系统,又称新空口(New Radio,NR)系统。或者,该无线通信系统也可以是5G系统的再下一代系统。
其中,基站120可以是5G系统中采用集中分布式架构的基站(gNB)。当基站120采用集中分布式架构时,通常包括集中单元(Central Unit,CU)和至少两个分布单元(Distributed Unit,DU)。集中单元中设置有分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)层、无线链路层控制协议(Radio Link Control,RLC)层、媒体访问控制(Media Access Control,MAC)层的协议栈;分布单元中设置有物理(Physical,PHY)层协议栈,本公开实施例对基站120的具体实现方式不加以限定。
基站120和用户设备110之间可以通过无线空口建立无线连接。该无线空口是基于第五代移动通信网络技术(5G)标准的无线空口,比如该无线空口是新空口;或者,该无线空口也可以是基于5G的更下一代移动通信网络技术标准的无线空口。
可选的,上述无线通信系统还可以包含网络管理设备130。
若干个基站120分别与网络管理设备130相连。其中,网络管理设备130可以是无线通信系统中的核心网设备,比如,该网络管理设备130可以包括接入与移动管理(Access and Mobility Management Function,AMF)单元、会话管理功能(Session Management Function,SMF)单元、用户面功能(User Plane Function,UPF)单元、策略控制功能(Policy Control Function,PCF)单元、统一数据管理(Unified Data Management,UDM)单元等。对于网络管理设备130的实现形态,本公开实施例不做限定。
随着5G应用的不断发展,网络控制互动服务(Network Controlled Interactive Services,NCIS)业务作为一个新的业务形态被引入到标准中进行相关的标准化业务。
NCIS业务主要针对增强现实(Augmented Reality,AR)/虚拟现实(Virtual Reality,VR)、游戏等应用,对速率、时延、丢包率、高速编解码等业务质量有很高的要求。例如:对于VR游戏,需要达到10Gbps的速率,丢包率不可超过1/10
-4(即每10000个数据包最多只允许丢包一个)。针对NCIS业务建立的会话为NCIS会话,在相同NCIS会话的UE可以认为组成一个NCIS组,例如:游戏中组队。
在3GPP(3rd Generation Partnership Project,第三代合作伙伴计划)R17中,使用5G近距离服务(Proximity Services,ProSe)课题来进行对近距离业务通信的方案设计。ProSe包含NCIS。ProSe中一个重要场景是终端到网络(UE-to-Network,U2N)中继(relay)的场景。U2N relay是通过一个中继终端(relay UE)为非中继终端(也可以称为远端终端(remote UE))中继传输数据,从而使remote UE可以与网络实现通信。
图2是本申请一示例性实施例示出的一种U2N relay的系统架构图。如图2所示,中继侧行链路场景下的非中继终端21(remote UE)与中继终端22(relay UE)之间建立基于PC5接口的连接(即PC5连接)。中继终端22与5G网络中的5G无线接入网(NG Radio Access Network,NG-RAN)之间建立有基于Uu接口的连接。5G网络中的5G核心网通过基于N6接口的连接与数据网络(Data Network,DN)相连。
如图2所示,Remote UE和relay UE之间建立PC5链路,relay UE为Remote UE提供Layer3(层3)U2N relay服务(即Remote UE的IP地址由relay UE进行配置),relay UE使用分组数据单元(Packet Data Unit,PDU)会话(session)为remote UE中继来自remote UE的数据或者发送给remote UE的数据。
每个PDU session对应有一个会话类型,例如:IPv4(Internet Protocol version 4,网际协议版本4)、IPv6(Internet Protocol version 6,网际协议版本6)、IPv4v6、Ethernet、Unstructured等等。对应一个会话类型的数据可以使用该会话类型对应的PDU session来传输。
为了实现中继通信,在进行中继通信之前,Relay和remote UE需要获得必须的配置参数。这些配置参数可以来自策略控制功能(Policy Control Function,PCF)单元或者应用服务器,或者,这些配置参数也可以预配置在终端上或者用户识别模块(Subscriber Identity Module,SIM)卡中。
在图2所示的系统架构中,Remote UE在传输数据之前,需要先发现合适的relay UE,并与其建立PC5连接。
Relay discovery可以有如下方式:Model A发现流程或者model B发现流程。
图3是本申请一示例性实施例示出的一种relay UE发现流程示意图。如图3所示,Model A发现流程是relay UE主动广播自己可以提供中继服务的中继服务码(Relay Service Code,RSC),Remote UE接收到RSC之后,若该RSC是自己需要的RSC,则确定发现合适的relay UE。例如,在图3中,relay UE(即UE1)主动向各个remote UE(即UE2至UE5)发送公告消息31,公告消息31中包含UE1的RSC,UE2至UE5中某个UE接收到该公告消息31后,确定公告消息31中的RSC是自己需要的RSC时,将UE1作为合适的relay UE。
图4是本申请一示例性实施例示出的另一种relay UE发现流程示意图。如图4所示,model B发现流程是remote UE先发出自己需要的RSC,如果周围有可以支持该RSC的relay UE,则该relay UE回复remote UE,此时,remote UE确定发现合适的relay UE。
例如,在图4中,remote UE(即UE1)向周围各个UE(即UE2至UE5)发送请求消息41,该请求消息41中包含UE1需要的RSC,UE2和UE3接收到请求消息41后发现自己支持该RSC,则向UE1回复响应消息42a和响应消息42b,则UE1将UE2和UE3作为合适的relay UE。
在图3或图4所示的发现流程之后,relay UE和remote UE之间即可以建立PC5连接。
Release17中,对于U2N中继切换的场景考虑了intra-gNB的场景,即切换前后gNB不变。然而intra-gNB也限制了U2N中继切换场景,比如,当Remote UE移出当前gNB的覆盖范围时,无法直接进行U2N中继切换。
对于上述问题,本申请后续实施例提供了一种在不同的基站之间实现U2N中继切换的方法,使得Remote UE可以直接切换为通过另一个gNB对应的中继终端(relay UE)接入网络。
图5是根据一示例性实施例示出的一种网络接入切换方法的流程图,该网络接入切换方法可以由第一基站执行,该第一基站是第一终端接入的基站,比如,该第一基站可以是图1所示的实施环境中的基站120。如图5所示,该方法可以包括以下步骤。
步骤501,根据第一终端的授权陆上公用移动通信网络PLMN列表,向第二基站发送切换请求,第二基站是第二终端接入的基站;第二终端接入的小区的PLMN标识属于授权PLMN列表,切换请求用于请求将第一终端的网络接入方式切换为通过与第二终端之间的侧行链路Sidelink接入网络。
综上所述,本申请实施例所示的方案,第一终端对应有授权陆上公用移动通信网络PLMN列表,当第二终端接入的小区的PLMN标识属于该授权PLMN列表时,第一终端接入的基站可以向第二终端接入的基站发送切换请求,使得第一终端的网络接入方式可以切换至通过与第二终端之间的侧行链路Sidelink接入网络;上述方案中,在将一个终端的网络接入方式切换至以另一个终端为中继接入网络的过程中,可以支持接入基站的改变,进而扩展了Relay Sidelink切换场景,提高了终端切换为通过另一个终端接入网络的效率。
图6是根据一示例性实施例示出的一种网络接入切换方法的流程图,该网络接入切换方法可以由第二基站执行,该第二基站是第二终端接入的基站,比如,该第二基站可以是图1所示的实施环境中的基站120。如图6所示,该方法可以包括以下步骤。
步骤601,接收第一基站根据第一终端的授权PLMN列表发送的切换请求,第一基站是第一终端接入的基站,第二终端接入的小区的PLMN标识属于授权PLMN列表,切换请求用于请求将第一终端的网络接入方式切换为通过与第二终端之间的侧行链路Sidelink接入网络。
综上所述,本申请实施例所示的方案,第一终端对应有授权陆上公用移动通信网络PLMN列表,当第二终端接入的小区的PLMN标识属于该授权PLMN列表时,第二终端接入的基站可以接收第一终端接入的基站发送切换请求,使得第一终端的网络接入方式可以切换至通过与第二终端之间的侧行链路Sidelink接入网络;上述方案中,在将一个终端的网络接入方式 切换至以另一个终端为中继接入网络的过程中,可以支持接入基站的改变,进而扩展了Relay Sidelink切换场景,提高了终端切换为通过另一个终端接入网络的效率。
在本申请上述图5或图6所示的实施例中,第一终端的PLMN标识可以由核心网设备提供给第一终端接入的第一基站。
图7是根据一示例性实施例示出的一种网络接入切换方法的流程图,该网络接入切换方法可以由核心网设备执行。如图7所示,该方法可以包括以下步骤。
步骤701,向第一基站发送第一终端的授权PLMN列表,第一基站是第一终端接入的基站,授权PLMN列表是第一基站向第二基站发送切换请求所使用的PLMN列表,第二基站是第二终端接入的基站,第二终端接入的小区的PLMN标识属于授权PLMN列表,切换请求用于请求将第一终端的网络接入方式切换为通过与第二终端之间的侧行链路Sidelink接入网络。
综上所述,本申请实施例所示的方案,核心网设备可以向第一终端接入的基站提供授权陆上公用移动通信网络PLMN列表,当第二终端接入的小区的PLMN标识属于该授权PLMN列表时,第一终端接入的基站可以向第二终端接入的基站发送切换请求,使得第一终端的网络接入方式可以切换至通过与第二终端之间的侧行链路Sidelink接入网络;上述方案中,在将一个终端的网络接入方式切换至以另一个终端为中继接入网络的过程中,可以支持接入基站的改变,进而扩展了Relay Sidelink切换场景,提高了终端切换为通过另一个终端接入网络的效率。
图8是根据一示例性实施例示出的一种网络接入切换方法的流程图,该网络接入切换方法可以由中继侧行链路场景中的第一基站、第二基站以及核心网设备交互执行,比如,该第一基站、第二基站可以是图1所示的实施环境中的基站120。如图8所示,该方法可以包括以下步骤。
步骤801,核心网设备向第一基站发送第一终端的授权PLMN列表;相应的,第一终端接收核心网设备发送的该授权PLMN列表。
其中,上述第一基站可以是第一终端当前接入的基站。
在一种可能的实现方式中,上述第一终端当前接入的基站,可以是指第一终端直接接入的基站,也就是说,第一终端通过与第一基站之间的Uu接口接入网络。
在另一种可能的实现方式中,上述第一终端当前接入的基站,也可以是指第一终端间接接入的基站,比如,第一终端与第三终端之间建立有PC5连接,第三终端与第一基站之间建立有基于Uu接口的连接;第一终端以第三终端为中继接入网络(即U2N中继场景)。
在一种可能的实现方式中,核心网设备为AMF单元,核心网设备向第一基站发送第一终端的授权PLMN列表,包括:
AMF单元通过初始上下文建立请求,向第一基站发送授权PLMN列表;相应的,第一基站接收AMF单元通过初始上下文建立请求发送的授权PLMN列表。
在一种可能的实现方式中,授权PLMN列表通过初始上下文建立请求中的近距离服务授权信息携带;
或者,授权PLMN列表通过初始上下文建立请求中的移动限制列表携带;
或者,授权PLMN列表通过初始上下文建立请求中独立的信息单元携带。
请参考图9,其示出了本申请实施例涉及的一种PLMN列表配置示意图。如图9所示,AMF单元向U2N中继切换的源基站(即第一基站)配置PLMN列表的过程如下:
S901,Remote UE与Relay UE之间执行中继发现和中继选择(Relay discovery and selection)。
S902,Remote UE与Relay UE之间进行PC5连接建立(PC5connection establishment)。
S903,Remote UE以Relay UE为中继,与NG-RAN(对应第一基站)之间执行接入层 (Access Stratum,AS)连接建立(AS connection setup)。
S904,Remote UE以Relay UE为中继向AMF发送非接入层(Non-AS,NAS)消息。
其中,该NAS消息可以是注册请求(Registration Request)消息或者服务请求(Service Request)消息。
S905,AMF向UDM发送Nudm_SDM_Get消息。
S906,UDM向AMF返回Nudm_SDM_Get Response消息。
S907,AMF向NG-RAN发送UE上下文建立请求(UE Context Setup Request)。
其中,该UE上下文建立请求中包含授权PLMN列表(Authorized PLMN list)。
S908,NG-RAN向AMF返回UE上下文建立响应(UE Context Setup Response)。
S909,AMF向Remote UE发送NAS消息。
其中,该NAS消息可以是注册接受(Registration Accept)消息或服务接受(Service Accept)消息。
S910,Remote UE以Relay UE为中继向AMF发送NAS消息。
其中,该NAS消息可以是注册完成(Registration Complete)消息。
在另一种可能的实现方式中,第一基站也可以接收AMF单元通过N2路径切换请求应答发送的授权PLMN列表。
在本申请实施例的一个示例性的方案中,第一终端在步骤801之前,可以从第三基站切换至第一基站,并且,第一终端在从第三基站切换至第一基站的过程中,AMF可以通过N2路径切换请求应答,将第一终端的授权PLMN列表发送给第一基站。或者,第一终端在从第三基站切换至第一基站的过程中,也可以由第三基站将上述第一终端的授权PLMN列表发送给第一基站。
步骤802,第一基站根据第一终端的授权陆上公用移动通信网络PLMN列表,向第二基站发送切换请求;相应的,第二基站接收该切换请求。
其中,第二基站是第二终端接入的基站;第二终端接入的小区的PLMN标识属于授权PLMN列表;切换请求用于请求将第一终端的网络接入方式切换为通过与第二终端之间的侧行链路Sidelink接入网络。
在一种可能的实现方式中,第一基站根据第一终端的授权PLMN列表,向第二基站发送切换请求之前,还包括:
接收第一终端上报的中继终端信息,中继终端信息用于指示第一终端发现的至少一个候选中继终端;
根据第一终端的授权PLMN列表,向第二基站发送切换请求,包括:
根据授权PLMN列表,从至少一个候选中继终端中确定第二终端;
向第二终端接入的第二基站发送切换请求。
在本申请实施例中,第一终端可以向第一基站上报其发现的候选中继终端的相关信息(即上述中继终端信息),其中可以包含候选中继终端的标识、以及候选中继终端的服务小区标识等等。后续第一基站在确定第一终端需要切换时,可以根据第一终端的授权PLMN列表,从第一终端发现的各个候选中继终端中确定上述第二终端。
比如,第一基站可以根据第一终端的授权PLMN列表,选择服务小区标识属于授权PLMN列表的各个候选中继终端,并从服务小区标识属于授权PLMN列表的各个候选中继终端中,选择与第一终端之间的信号强度满足切换条件(比如信号强度最大,且大于切换阈值)的终端作为上述第二终端。其中,候选中继终端与第一终端之间的信号强度可以通过上述中继终端信息携带,或者,也可以由第一终端通过中继终端信息之外的其它消息进行上报。
其中,上述候选中继终端可以是满足第一终端的中继选择准则的终端,比如,上述候选中继终端可以是中继服务码(Relay Service Code)满足第一终端的要求的中继终端。
在一种可能的实现方式中,当第一终端以直连方式接入网络时,第一基站根据第一终端 的授权PLMN列表,向第二基站发送切换请求之前,还包括:
第一基站接收第一终端上报的第一测量信息;第一测量信息用于指示第一终端与第一基站之间的无线信号质量;
第一基站根据第一终端的授权PLMN列表,向第二基站发送切换请求,包括:
当第一测量信息满足第一切换条件时,第一基站根据授权PLMN列表向第二基站发送切换请求。
在一种可能的实现方式中,第一切换条件包括:第一终端与第一基站之间的无线信号质量低于第一信号质量阈值。
在本申请实施例中,当第一终端直接接入基站时,第一终端还可以向第一基站上报第一终端与第一基站之间的无线信号质量(比如,第一终端可以上报与第一基站之间的Uu测量结果),当第一基站确定与第一终端之间的无线信号质量满足切换条件,比如,无线信号质量低于某个无线信号质量阈值时,可以触发根据授权PLMN列表向第二基站发送切换请求的步骤。
在一种可能的实现方式中,当第一终端以非直连方式接入网络时,根据第一终端的授权PLMN列表,第一基站向第二基站发送切换请求之前,还包括:
第一基站接收第一终端上报的第二测量信息;第二测量信息用于指示第一终端与第三终端之间的无线信号质量;第一终端与第三终端之间建立有中继Sidelink连接;
第一基站根据第一终端的授权PLMN列表,向第二基站发送切换请求,包括:
当第二测量信息满足第二切换条件时,第一基站根据授权PLMN列表向第二基站发送切换请求。
在一种可能的实现方式中,第二切换条件包括:第一终端与第三终端之间的无线信号质量低于第二信号质量阈值。
在本申请实施例中,当第一终端通过第三终端间接的接入基站时,第一终端还可以向第一基站上报第一终端与第三终端之间的无线信号质量(比如,第一终端可以上报与第三终端之间的PC5测量结果),当第一基站确定第一终端与第二终端之间的无线信号质量满足切换条件,比如,无线信号质量低于某个无线信号质量阈值时,可以触发根据授权PLMN列表向第二基站发送切换请求的步骤。
在一种可能的实现方式中,第一基站可以将授权PLMN列表发送给第二基站;相应的,第二基站可以接收第一基站发送的授权PLMN列表。
在本申请实施例中,第一基站确定向第二基站发送切换请求,以请求将第一终端切换至通过第二终端接入网络的情况下,还可以将第一终端的授权PLMN列表提供给第二基站,以便第二基站后续对第一终端的数据路径再次进行切换时,根据该授权PLMN列表选择U2N中继切换的新的目标基站。
在一种可能的实现方式中,第一基站将授权PLMN列表发送给第二基站,包括:
在将第一终端的网络接入方式切换为通过与第二终端之间的侧行链路Sidelink接入网络的准备阶段,第一基站可以将授权PLMN列表发送给第二基站。相应的,第二基站接收第一基站在将第一终端的网络接入方式切换为通过与第二终端之间的侧行链路Sidelink接入网络的准备阶段发送的授权PLMN列表。
在本申请实施例中,当第一基站确定向第二基站发送切换请求,以请求将第一终端切换至通过第二终端接入网络的情况下,在切换准备阶段,第一基站可以将上述第一终端的授权PLMN列表发送给第二基站。
在另一种可能的实现方式中,第一基站将授权PLMN列表发送给第二基站,包括:
第一基站通过源到目标透明容器,将授权PLMN列表发送给第二基站;相应的,第二基站接收第一基站通过源到目标透明容器发送的授权PLMN列表。
在本申请实施例中,当第一基站确定向第二基站发送切换请求,以请求将第一终端切换 至通过第二终端接入网络的情况下,第一终端可以通过目标透明容器Source to Target transparent container,将上述第一终端的授权PLMN列表发送给第二基站。
在一种可能的实现方式中,核心网设备可以向第二基站发送授权PLMN列表;相应的,第二基站接收核心网设备发送的授权PLMN列表。
在本申请实施例中,上述向第二基站提供第一终端的授权PLMN列表的过程也可以由核心网设备执行。
在一种可能的实现方式中,第二基站可以接收AMF单元发送的第一终端的授权PLMN列表。
在一种可能的实现方式中,上述核心网设备可以为与第一基站对应的源AMF单元,核心网设备向第二基站发送授权PLMN列表,包括:
与第一基站对应的源AMF单元向与第二基站对应的目标AMF单元发送授权PLMN列表,以便目标AMF单元向第二基站发送授权PLMN列表;相应的,第二基站接收与第二基站对应的目标AMF单元的授权PLMN列表;该授权PLMN列表由与第一基站对应的源AMF单元发送给目标AMF单元。
请参考图10,其示出了本申请实施例涉及的一种切换过程示意图。如图10所示,该切换过程如下:
S1001,UE(第一终端)、源NG-RAN(第一基站)以及目标NG-RAN(第二基站)之间进行切换准备(Handover preparation)。
S1002,UE、源NG-RAN以及目标NG-RAN之间进行切换执行(Handover Execution)。
其中,该步骤中,源NG-RAN向目标NG-RAN执行数据转发,并向AMF发送无线接入网(Radio Access Network,RAN)使用数据报告(RAN Usage data report);目标NG-RAN则向AMF发送N2路径切换请求(N2Path Switch Request)。
S1003,AMF向SMF发送Nsmf_PDUSession_UpdateSMContext Request。
S1004,SMF向UPF发送N4会话修改请求(N4Session Modification Request)。
S1005,UPF向SMF发送N4会话修改响应(N4Session Modification Response)。
S1006,UPF向源NG-RAN发送N3结束标记(N3End marker)。
S1007,源NG-RAN向目标NG-RAN发送N3结束标记。
S1008,UPF通过目标NG-RAN,向UE发送下行数据(Downlink data)。
S1009,SMF向AMF发送Nsmf_PDUSession_UpdatSMContext Response。
S1010,AMF向目标NG-RAN发送N2路径切换请求应答(N2Path Switch Request Ack)。
S1011,目标NG-RAN向源NG-RAN发送释放资源消息(Release Resources)。
S1012,UE与AMF之间执行注册流程(Registration Procedure)。
在上述图10所示的方案中,在切换准备阶段,源NG-RAN(第一基站,也称为源gNB)将UE的授权PLMN列表(authorized PLMN ID list for remote UE)发送给目标NG-RAN(第二基站,也称为目标gNB)。或者AMF在步骤S1010中将authorized PLMN ID list for remote UE发送给目标gNB。
请参考图11,其示出了本申请实施例涉及的另一种切换过程示意图。如图11所示,该切换过程如下:
S1101,UE通过源NG-RAN进行上行/下行用户面数据传输。
S1102,通过N2触发重分配决定(Decision to trigger a relocation via N2)时,源NG-RAN向源AMF发送切换需求(Handover Required)。
S1103,源AMF选择目标AMF(T-AMF Selection)。
S1104,源AMF向目标AMF发送Namf_Communication_CreateUEContext Request。
S1105,目标AMF向SMF发送Nsmf_PDUSession_UpdateSMContext Request。
S1106,SMF选择UPF(UPF Selection)。
S1107,SMF向PSA UPF发送N4会话修改请求(N4Session Modification Request)。
S1108,PSA UPF向SMF发送N4会话修改响应(N4Session Modification Response)。
S1109,SMF向目标UPF发送N4会话建立请求(N4Session Establishment Request)。
S1110,目标UPF向SMF发送N4会话建立响应(N4Session Establishment Response)。
S1111,SMF向目标AMF发送Nsmf_PDUSession_UpdateSMContext Response。
S1112,目标AMF与SMF之间进行PDU切换响应管理(PDU Handover Response supervision)。
S1113,目标AMF向目标NG-RAN发送切换请求(Handover Request)。
S1114,目标NG-RAN向目标AMF发送切换请求应答(Handover Request Acknowledge)。
S1115,目标AMF向SMF发送Nsmf_PDUSession_UpdateSMContext Request。
S1116,SMF向目标UPF发送N4会话修改请求。
S1117,目标UPF向SMF发送N4会话修改响应。
S1118,SMF向源UPF发送N4会话修改请求。
S1119,源UPF向SMF发送N4会话修改响应。
S1120,SMF向目标AMF发送Nsmf_PDUSession_UpdateSMContext Response。
S1121,目标AMF向源AMF发送Namf_Communication_CreateUEContext Response。
在上述图11所示的方案中,源gNB将authorized PLMN ID list for remote UE通过Source to Target transparent container发送给目标gNB;或者由源AMF通过步骤S1104将authorized PLMN ID list for remote UE发送给目标AMF,然后由目标AMF在步骤S1113中将authorized PLMN ID list for remote UE发送给目标gNB。
或者,在HO(Handover)结束,且由AMF获取UE的签约数据后,由AMF将authorized PLMN ID list for remote UE发送给目标gNB。
步骤803,第一基站向第一终端发送第一连接建立消息,第一连接建立消息用于指示第一终端建立与第二终端之间的Sidelink连接。
步骤804,第二基站向第二终端发送第二连接建立消息,第二连接建立消息用于指示第二终端建立与第一终端之间的Sidelink连接。
其中,当第一终端接收到第一连接建立消息,第二终端接收到第二连接建立消息之后,第一终端和第二终端之间即可以建立PC5连接,并且,第一终端以第二终端为中继接入网络。
请参考图12,其示出了本申请实施例涉及的远端UE的路径切换示意图。如图12所示,以从直连方式切换到非直连方式的路径切换为例,该过程可以如下:
S1201,远端UE与源gNB进行测量配置和报告(Measurement configuration and reporting)。
其中,U2N Remote UE上报候选的U2N Relay UE及Uu测量数据。
1)UE上报的Relay需要都满足relay选择准则:如Relay service code符合要求。
2)上报中至少包括U2N Relay UE ID,U2N Relay UE的serving cell ID。
S1202,源gNB根据远端UE的授权PLMN列表决定将远端UE切换到目标中继UE和目标gNB(Decision of switching to a target relay UE and target gNB)。
源gNB决定发起switch the U2N Remote UE to a target U2N Relay UE。gNB根据authorized PLMN ID list来选择合适的relay,当U2N Relay UE的serving cell ID对应的PLMN ID在authorized PLMN ID list中时,这个relay可以被选择。
S1203,源gNB与目标gNB之间进行切换请求和应答(Handover Request and ACK)。
源gNB向目标gNB发起Handover Request消息,这个消息可以直接发送至目标gNB,也可以通过核心网转发至目标gNB。
S1204,中继UE与目标gNB之间执行远端UE的RRC重构(RRC Reconfiguration for remote UE)。
其中,目标gNB可以向目标U2N Relay UE发送RRC Reconfiguration message。
S1205,源gNB向远端UE发送RRC重构消息(RRC Reconfiguration message)。
其中,源gNB向U2N Remote UE发送RRC Reconfiguration消息。
S1206,如果远端UE和中继UE之间不存在PC5连接,则远端UE和中继UE之间进行PC5连接建立(PC5connection establishment)。
U2N Remote UE与目标U2N Relay UE建立PC5连接。
S1207,远端UE通过中继UE向目标gNB发送RRC重构完成消息(RRC Reconfiguration Complete message)。
U2N Remote UE完成路径切换,通过relay UE向gNB发送RRC Reconfiguration Complete消息;这样remote UE与gNB之间的data path就从直连方式切换为非直连方式。
S1208,远端UE与目标gNB之间,通过中继UE进行上下行数据传输(UL/DL data)。
对于从非直连方式到非直连方式的路径切换(path switch),gNB使用authorized PLMN ID list选择relay UE的方式与上述图12所示的方案类似,此处不再赘述。
下述为本公开装置实施例,可以用于执行本公开方法实施例。对于本公开装置实施例中未披露的细节,请参照本公开方法实施例。
图13是根据一示例性实施例示出的一种网络接入切换装置1300的框图。
上述图13所示的装置可以执行图5、图6、图7以及图8任一实施例中由第一基站执行的全部或部分步骤;第一基站是第一终端接入的基站。此时,该装置可以包括:
发送模块1301,用于根据所述第一终端的授权陆上公用移动通信网络PLMN列表,向第二基站发送切换请求,所述第二基站是第二终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
在一种可能的实现方式中,所述装置还包括:
接收模块,用于在所述发送模块根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,接收所述第一终端上报的中继终端信息,所述中继终端信息用于指示所述第一终端发现的至少一个候选中继终端;
所述发送模块1301,用于,根据所述授权PLMN列表,从至少一个所述候选中继终端中确定所述第二终端;向所述第二终端接入的所述第二基站发送切换请求。
在一种可能的实现方式中,所述装置还包括:
接收模块,用于当所述第一终端以直连方式接入网络时,在所述发送模块根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,接收所述第一终端上报的第一测量信息,所述第一测量信息用于指示所述第一终端与所述第一基站之间的无线信号质量;
所述发送模块1301,用于当所述第一测量信息满足第一切换条件时,根据所述授权PLMN列表向所述第二基站发送所述切换请求。
在一种可能的实现方式中,所述第一切换条件包括:所述第一终端与所述第一基站之间的无线信号质量低于第一信号质量阈值。
在一种可能的实现方式中,所述装置还包括:
接收模块,用于当所述第一终端以非直连方式接入网络时,在所述发送模块根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,接收所述第一终端上报的第二测量信息,所述第二测量信息用于指示所述第一终端与第三终端之间的无线信号质量,所述第一终端与所述第三终端之间建立有中继Sidelink连接;
所述发送模块1301,用于当所述第二测量信息满足第二切换条件时,根据所述授权PLMN列表向所述第二基站发送所述切换请求。
在一种可能的实现方式中,第二切换条件包括:第一终端与第三终端之间的无线信号质量低于第二信号质量阈值。
在一种可能的实现方式中,所述发送模块1301,还用于向所述第一终端发送第一连接建立消息,所述第一连接建立消息用于指示所述第一终端建立与所述第二终端之间的Sidelink连接。
在一种可能的实现方式中,所述装置还包括:
接收模块,用于在所述发送模块根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,接收核心网设备发送的所述授权PLMN列表。
在一种可能的实现方式中,所述接收模块,用于,
接收AMF单元通过初始上下文建立请求发送的所述授权PLMN列表;
或者,接收AMF单元通过N2路径切换请求应答发送的所述授权PLMN列表。
在一种可能的实现方式中,所述授权PLMN列表通过所述初始上下文建立请求中的近距离服务授权信息携带;
或者,所述授权PLMN列表通过所述初始上下文建立请求中的移动限制列表携带;
或者,所述授权PLMN列表通过所述初始上下文建立请求中独立的信息单元携带。
在一种可能的实现方式中,所述发送模块1301,还用于将所述授权PLMN列表发送给所述第二基站。
在一种可能的实现方式中,所述发送模块1301,用于在将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络的准备阶段,将所述授权PLMN列表发送给所述第二基站。
在一种可能的实现方式中,所述发送模块1301,用于通过源到目标透明容器,将所述授权PLMN列表发送给所述第二基站。
上述图13所示的装置可以执行图7或图8所示实施例中由核心网设备基站执行的全部或部分步骤。此时,该装置可以包括:
发送模块1301,用于向第一基站发送第一终端的授权PLMN列表,所述第一基站是第一终端接入的基站,所述授权PLMN列表是所述第一基站向第二基站发送切换请求所使用的PLMN列表,所述第二基站是第二终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
在一种可能的实现方式中,所述核心网设备为AMF单元,所述发送模块1301,用于通过初始上下文建立请求,向所述第一基站发送所述授权PLMN列表。
在一种可能的实现方式中,所述授权PLMN列表通过所述初始上下文建立请求中的近距离服务授权信息携带;
或者,所述授权PLMN列表通过所述初始上下文建立请求中的移动限制列表携带;
或者,所述授权PLMN列表通过所述初始上下文建立请求中独立的信息单元携带。
在一种可能的实现方式中,所述发送模块1301,还用于向所述第二基站发送所述授权PLMN列表。
在一种可能的实现方式中,所述装置用于核心网设备,所述核心网设备为与所述第一基站对应的源AMF单元,
所述发送模块1301,用于向与所述第二基站对应的目标AMF单元发送所述授权PLMN列表,以便所述目标AMF单元向所述第二基站发送所述授权PLMN列表。
图14是根据一示例性实施例示出的一种网络接入切换装置1400的框图。
上述图14所示的装置可以执行图5、图6、图7以及图8任一实施例中由第二基站执行的全部或部分步骤;第二基站是第二终端接入的基站。此时,该装置可以包括:
接收模块1401,用于接收第一基站根据第一终端的授权PLMN列表发送的切换请求,所 述第一基站是所述第一终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
在一种可能的实现方式中,所述装置还包括:
发送模块,用于向所述第二终端发送第二连接建立消息,所述第二连接建立消息用于指示所述第二终端建立与所述第一终端之间的Sidelink连接。
在一种可能的实现方式中,所述接收模块1401,还用于接收所述第一基站发送的所述授权PLMN列表。
在一种可能的实现方式中,所述接收模块1401,用于接收所述第一基站在将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络的准备阶段发送的所述授权PLMN列表。
在一种可能的实现方式中,所述接收模块1401,用于接收所述第一基站通过源到目标透明容器发送的所述授权PLMN列表。
在一种可能的实现方式中,所述接收模块1401,还用于接收核心网设备发送的所述授权PLMN列表。
在一种可能的实现方式中,所述接收模块1401,用于接收AMF单元发送的所述授权PLMN列表。
在一种可能的实现方式中,所述接收模块1401,用于接收与所述第二基站对应的目标AMF单元的所述授权PLMN列表,所述授权PLMN列表由与所述第一基站对应的源AMF单元发送给所述目标AMF单元。
需要说明的一点是,上述实施例提供的装置在实现其功能时,仅以上述各个功能模块的划分进行举例说明,实际应用中,可以根据实际需要而将上述功能分配由不同的功能模块完成,即将设备的内容结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。
关于上述实施例中的装置,其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述,此处将不做详细阐述说明。
请参考图15,其示出了本申请一个实施例提供的计算机设备1500的结构示意图。该计算机设备1500可以包括:处理器1501、收发器1502以及存储器1503。
处理器1501包括一个或者一个以上处理核心,处理器1501通过运行软件程序以及模块,从而执行各种功能应用以及信息处理。
收发器1502可以包括接收器和发射器。比如,该收发器1502可以包括一个有线通信组件,该有线通信组件可以包括一块有线通信芯片以及有线接口(比如光纤接口)。可选的,该收发器1502还可以包括一个无线通信组件,该无线通信组件可以包括一块无线通信芯片以及射频天线。
存储器1503可以与处理器1501以及收发器1502相连。
存储器1503可用于存储处理器执行的计算机程序,处理器1501用于执行该计算机程序,以实现上述方法实施例中的基站或者核心网设备执行的各个步骤。
此外,存储器1503可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,易失性或非易失性存储设备包括但不限于:磁盘或光盘,电可擦除可编程只读存储器,可擦除可编程只读存储器,静态随时存取存储器,只读存储器,磁存储器,快闪存储器,可编程只读存储器。
在一个示例性的方案中,当计算机设备1500实现为第一基站,该第一基站是第一终端接入的基站时,所述收发器1502,用于根据第一终端的授权陆上公用移动通信网络PLMN列表,向第二基站发送切换请求,所述第二基站是第二终端接入的基站,所述第二终端接入的小区 的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
其中,上述计算机设备1500中的收发器1502执行的过程可以参考上述图5、图6、图7以及图8任一所示的方法中,由第一基站执行的各个步骤。
在一个示例性的方案中,当计算机设备1500实现为第二基站,该第二基站是第二终端接入的基站时,所述收发器1502,用于接收第一基站根据第一终端的授权PLMN列表发送的切换请求,所述第一基站是所述第一终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
其中,上述计算机设备1500中的收发器1502执行的过程可以参考上述图5、图6、图7以及图8任一所示的方法中,由第二基站执行的各个步骤。
在一个示例性的方案中,当计算机设备1500实现为核心网时,所述收发器1502,用于向第一基站发送第一终端的授权PLMN列表,所述第一基站是第一终端接入的基站,所述授权PLMN列表是所述第一基站向第二基站发送切换请求所使用的PLMN列表,所述第二基站是第二终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
其中,上述计算机设备1500中的收发器1502执行的过程可以参考上述图7以及图8任一所示的方法中,由核心网设备执行的各个步骤。
本申请实施例还提供了一种计算机可读存储介质,所述存储介质中存储有计算机程序,所述计算机程序由处理器加载并执行以实现上述图5、图6、图7以及图8任一所示的方法中,由第一基站、第二基站或者核心网设备执行的各个步骤。
本申请还提供了一种计算机程序产品,该计算机程序产品包括计算机指令,该计算机指令存储在计算机可读存储介质中。计算机设备的处理器从计算机可读存储介质读取该计算机指令,处理器执行该计算机指令,使得该计算机设备执行上述图5、图6、图7以及图8任一所示的方法中,由第一基站、第二基站或者核心网设备执行的各个步骤。
本申请还提供了一种芯片,该芯片用于在计算机设备中运行,以使得所述计算机设备执行上述图5、图6、图7以及图8任一所示的方法中,由第一基站、第二基站或者核心网设备执行的各个步骤。
本申请还提供了一种计算机程序,该计算机程序由计算机设备的处理器执行,以实现如上述图5、图6、图7以及图8任一所示的方法中,由第一基站、第二基站或者核心网设备执行的各个步骤。
本领域技术人员应该可以意识到,在上述一个或多个示例中,本申请实施例所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时,可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质,其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述仅为本申请的示例性实施例,并不用以限制本申请,凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。
Claims (57)
- 一种网络接入切换方法,其特征在于,所述方法由第一基站执行,所述第一基站是第一终端接入的基站;所述方法包括:根据所述第一终端的授权陆上公用移动通信网络PLMN列表,向第二基站发送切换请求,所述第二基站是第二终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
- 根据权利要求1所述的方法,其特征在于,所述根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,还包括:接收所述第一终端上报的中继终端信息,所述中继终端信息用于指示所述第一终端发现的至少一个候选中继终端;所述根据所述第一终端的授权PLMN列表,向第二基站发送切换请求,包括:根据所述授权PLMN列表,从至少一个所述候选中继终端中确定所述第二终端;向所述第二终端接入的所述第二基站发送切换请求。
- 根据权利要求1或2所述的方法,其特征在于,当所述第一终端以直连方式接入网络时,所述根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,还包括:接收所述第一终端上报的第一测量信息,所述第一测量信息用于指示所述第一终端与所述第一基站之间的无线信号质量;所述根据所述第一终端的授权PLMN列表,向第二基站发送切换请求,包括:当所述第一测量信息满足第一切换条件时,根据所述授权PLMN列表向所述第二基站发送所述切换请求。
- 根据权利要求3所述的方法,其特征在于,所述第一切换条件包括:所述第一终端与所述第一基站之间的无线信号质量低于第一信号质量阈值。
- 根据权利要求1或2所述的方法,其特征在于,当所述第一终端以非直连方式接入网络时,所述根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,还包括:接收所述第一终端上报的第二测量信息,所述第二测量信息用于指示所述第一终端与第三终端之间的无线信号质量,所述第一终端与所述第三终端之间建立有中继Sidelink连接;所述根据所述第一终端的授权PLMN列表,向第二基站发送切换请求,包括:当所述第二测量信息满足第二切换条件时,根据所述授权PLMN列表向所述第二基站发送所述切换请求。
- 根据权利要求5所述的方法,其特征在于,所述第二切换条件包括:所述第一终端与所述第三终端之间的无线信号质量低于第二信号质量阈值。
- 根据权利要求1至6任一所述的方法,其特征在于,所述方法还包括:向所述第一终端发送第一连接建立消息,所述第一连接建立消息用于指示所述第一终端建立与所述第二终端之间的Sidelink连接。
- 根据权利要求1至7任一所述的方法,其特征在于,所述根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,还包括:接收核心网设备发送的所述授权PLMN列表。
- 根据权利要求8所述的方法,其特征在于,所述接收核心网设备发送的所述授权PLMN列表,包括:接收AMF单元通过初始上下文建立请求发送的所述授权PLMN列表;或者,接收AMF单元通过N2路径切换请求应答发送的所述授权PLMN列表。
- 根据权利要求9所述的方法,其特征在于,所述授权PLMN列表通过所述初始上下文建立请求中的近距离服务授权信息携带;或者,所述授权PLMN列表通过所述初始上下文建立请求中的移动限制列表携带;或者,所述授权PLMN列表通过所述初始上下文建立请求中独立的信息单元携带。
- 根据权利要求1至10任一所述的方法,其特征在于,所述方法还包括:将所述授权PLMN列表发送给所述第二基站。
- 根据权利要求11所述的方法,其特征在于,所述将所述授权PLMN列表发送给所述第二基站,包括:在将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络的准备阶段,将所述授权PLMN列表发送给所述第二基站。
- 根据权利要求11所述的方法,其特征在于,所述将所述授权PLMN列表发送给所述第二基站,包括:通过源到目标透明容器,将所述授权PLMN列表发送给所述第二基站。
- 一种网络接入切换方法,其特征在于,所述方法由第二基站执行,所述第二基站是第二终端接入的基站;所述方法包括:接收第一基站根据第一终端的授权PLMN列表发送的切换请求,所述第一基站是所述第一终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
- 根据权利要求14所述的方法,其特征在于,所述方法还包括:向所述第二终端发送第二连接建立消息,所述第二连接建立消息用于指示所述第二终端建立与所述第一终端之间的Sidelink连接。
- 根据权利要求14或15所述的方法,其特征在于,所述方法还包括:接收所述第一基站发送的所述授权PLMN列表。
- 根据权利要求16所述的方法,其特征在于,所述接收所述第一基站发送的所述授权PLMN列表,包括:接收所述第一基站在将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络的准备阶段发送的所述授权PLMN列表。
- 根据权利要求16所述的方法,其特征在于,所述接收所述第一基站发送的所述授权PLMN列表,包括:接收所述第一基站通过源到目标透明容器发送的所述授权PLMN列表。
- 根据权利要求14或15所述的方法,其特征在于,所述方法还包括:接收核心网设备发送的所述授权PLMN列表。
- 根据权利要求19所述的方法,其特征在于,所述接收核心网设备发送的所述授权PLMN列表,包括:接收AMF单元发送的所述授权PLMN列表。
- 根据权利要求19所述的方法,其特征在于,所述接收核心网设备发送的所述授权PLMN列表,包括:接收与所述第二基站对应的目标AMF单元的所述授权PLMN列表,所述授权PLMN列表由与所述第一基站对应的源AMF单元发送给所述目标AMF单元。
- 一种网络接入切换方法,其特征在于,所述方法由核心网设备执行,所述方法包括:向第一基站发送第一终端的授权PLMN列表,所述第一基站是第一终端接入的基站,所述授权PLMN列表是所述第一基站向第二基站发送切换请求所使用的PLMN列表,所述第二基站是第二终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
- 根据权利要求22所述的方法,其特征在于,所述核心网设备为AMF单元,所述向第一基站发送第一终端的授权PLMN列表,包括:通过初始上下文建立请求,向所述第一基站发送所述授权PLMN列表。
- 根据权利要求23所述的方法,其特征在于,所述授权PLMN列表通过所述初始上下文建立请求中的近距离服务授权信息携带;或者,所述授权PLMN列表通过所述初始上下文建立请求中的移动限制列表携带;或者,所述授权PLMN列表通过所述初始上下文建立请求中独立的信息单元携带。
- 根据权利要求22所述的方法,其特征在于,所述方法还包括:向所述第二基站发送所述授权PLMN列表。
- 根据权利要求25所述的方法,其特征在于,所述核心网设备为与所述第一基站对应的源AMF单元,所述向所述第二基站发送所述授权PLMN列表,包括:向与所述第二基站对应的目标AMF单元发送所述授权PLMN列表,以便所述目标AMF单元向所述第二基站发送所述授权PLMN列表。
- 一种网络接入切换装置,其特征在于,所述装置用于第一基站,所述第一基站是第一终端接入的基站;所述装置包括:发送模块,用于根据所述第一终端的授权陆上公用移动通信网络PLMN列表,向第二基站发送切换请求,所述第二基站是第二终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
- 根据权利要求27所述的装置,其特征在于,所述装置还包括:接收模块,用于在所述发送模块根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,接收所述第一终端上报的中继终端信息,所述中继终端信息用于指示所述第一终端发现的至少一个候选中继终端;所述发送模块,用于,根据所述授权PLMN列表,从至少一个所述候选中继终端中确定所述第二终端;向所述第二终端接入的所述第二基站发送切换请求。
- 根据权利要求27或28所述的装置,其特征在于,所述装置还包括:接收模块,用于当所述第一终端以直连方式接入网络时,在所述发送模块根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,接收所述第一终端上报的第一测量信息,所述第一测量信息用于指示所述第一终端与所述第一基站之间的无线信号质量;所述发送模块,用于当所述第一测量信息满足第一切换条件时,根据所述授权PLMN列表向所述第二基站发送所述切换请求。
- 根据权利要求29所述的装置,其特征在于,所述第一切换条件包括:所述第一终端与所述第一基站之间的无线信号质量低于第一信号质量阈值。
- 根据权利要求27或28所述的装置,其特征在于,所述装置还包括:接收模块,用于当所述第一终端以非直连方式接入网络时,在所述发送模块根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,接收所述第一终端上报的第二测量信息,所述第二测量信息用于指示所述第一终端与第三终端之间的无线信号质量,所述第一终端与所述第三终端之间建立有中继Sidelink连接;所述发送模块,用于当所述第二测量信息满足第二切换条件时,根据所述授权PLMN列表向所述第二基站发送所述切换请求。
- 根据权利要求31所述的装置,其特征在于,所述第二切换条件包括:所述第一终端与所述第三终端之间的无线信号质量低于第二信号质量阈值。
- 根据权利要求27至32任一所述的装置,其特征在于,所述发送模块,还用于向所述第一终端发送第一连接建立消息,所述第一连接建立消息 用于指示所述第一终端建立与所述第二终端之间的Sidelink连接。
- 根据权利要求27至33任一所述的装置,其特征在于,所述装置还包括:接收模块,用于在所述发送模块根据所述第一终端的授权PLMN列表,向第二基站发送切换请求之前,接收核心网设备发送的所述授权PLMN列表。
- 根据权利要求34所述的装置,其特征在于,所述接收模块,用于,接收AMF单元通过初始上下文建立请求发送的所述授权PLMN列表;或者,接收AMF单元通过N2路径切换请求应答发送的所述授权PLMN列表。
- 根据权利要求35所述的装置,其特征在于,所述授权PLMN列表通过所述初始上下文建立请求中的近距离服务授权信息携带;或者,所述授权PLMN列表通过所述初始上下文建立请求中的移动限制列表携带;或者,所述授权PLMN列表通过所述初始上下文建立请求中独立的信息单元携带。
- 根据权利要求27至36任一所述的装置,其特征在于,所述发送模块,还用于将所述授权PLMN列表发送给所述第二基站。
- 根据权利要求37所述的装置,其特征在于,所述发送模块,用于在将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络的准备阶段,将所述授权PLMN列表发送给所述第二基站。
- 根据权利要求37所述的装置,其特征在于,所述发送模块,用于通过源到目标透明容器,将所述授权PLMN列表发送给所述第二基站。
- 一种网络接入切换装置,其特征在于,所述装置用于第二基站,所述第二基站是第二终端接入的基站;所述装置包括:接收模块,用于接收第一基站根据第一终端的授权PLMN列表发送的切换请求,所述第一基站是所述第一终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
- 根据权利要求40所述的装置,其特征在于,所述装置还包括:发送模块,用于向所述第二终端发送第二连接建立消息,所述第二连接建立消息用于指示所述第二终端建立与所述第一终端之间的Sidelink连接。
- 根据权利要求40或41所述的装置,其特征在于,所述接收模块,还用于接收所述第一基站发送的所述授权PLMN列表。
- 根据权利要求42所述的装置,其特征在于,所述接收模块,用于接收所述第一基站在将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络的准备阶段发送的所述授权PLMN列表。
- 根据权利要求42所述的装置,其特征在于,所述接收模块,用于接收所述第一基站通过源到目标透明容器发送的所述授权PLMN列表。
- 根据权利要求40或41所述的装置,其特征在于,所述接收模块,还用于接收核心网设备发送的所述授权PLMN列表。
- 根据权利要求45所述的装置,其特征在于,所述接收模块,用于接收AMF单元发送的所述授权PLMN列表。
- 根据权利要求45所述的装置,其特征在于,所述接收模块,用于接收与所述第二基站对应的目标AMF单元的所述授权PLMN列表;所述授权PLMN列表由与所述第一基站对应的源AMF单元发送给所述目标AMF单元。
- 一种网络接入切换装置,其特征在于,所述装置包括:发送模块,用于向第一基站发送第一终端的授权PLMN列表,所述第一基站是第一终端接入的基站,所述授权PLMN列表是所述第一基站向第二基站发送切换请求所使用的PLMN列表,所述第二基站是第二终端接入的基站,所述第二终端接入的小区的PLMN标识属于所述授权PLMN列表,所述切换请求用于请求将所述第一终端的网络接入方式切换为通过与所述第二终端之间的侧行链路Sidelink接入网络。
- 根据权利要求48所述的装置,其特征在于,所述核心网设备为AMF单元,所述发送模块,用于通过初始上下文建立请求,向所述第一基站发送所述授权PLMN列表。
- 根据权利要求49所述的装置,其特征在于,所述授权PLMN列表通过所述初始上下文建立请求中的近距离服务授权信息携带;或者,所述授权PLMN列表通过所述初始上下文建立请求中的移动限制列表携带;或者,所述授权PLMN列表通过所述初始上下文建立请求中独立的信息单元携带。
- 根据权利要求48所述的装置,其特征在于,所述发送模块,还用于向所述第二基站发送所述授权PLMN列表。
- 根据权利要求51所述的装置,其特征在于,所述装置用于核心网设备,所述核心网设备为与所述第一基站对应的源AMF单元,所述发送模块,用于向与所述第二基站对应的目标AMF单元发送所述授权PLMN列表,以便所述目标AMF单元向所述第二基站发送所述授权PLMN列表。
- 一种计算机设备,其特征在于,所述计算机设备包括处理器、存储器和收发器;所述存储器中存储有计算机程序,所述处理器执行所述计算机程序,以使得所述计算机设备实现如上述权利要求1至26任一所示的网络接入切换方法。
- 一种计算机可读存储介质,其特征在于,所述存储介质中存储有计算机程序,所述计算机程序用于被处理器执行,以实现如权利要求1至26任一所示的网络接入切换方法。
- 一种芯片,其特征在于,所述芯片用于在计算机设备中运行,以使得所述计算机设备执行如权利要求1至26任一所示的网络接入切换方法。
- 一种计算机程序产品,其特征在于,所述计算机程序产品包括计算机指令,所述计算机指令存储在计算机可读存储介质中;计算机设备的处理器从所述计算机可读存储介质读取所述计算机指令,并执行所述计算机指令,使得所述计算机设备执行如权利要求1至26任一所示的网络接入切换方法。
- 一种计算机程序,其特征在于,所述计算机程序由计算机设备的处理器执行,以实现如权利要求1至26任一所示的网络接入切换方法。
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ZTE: "Inter-PLMN and Inter-frequency support", 3GPP TSG-RAN WG2 MEETING #87, R2-143599, 17 August 2014 (2014-08-17), XP050794578 * |
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