WO2018059126A1 - Procédé et dispositif de prise en charge de mobilité d'équipement utilisateur distant - Google Patents

Procédé et dispositif de prise en charge de mobilité d'équipement utilisateur distant Download PDF

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Publication number
WO2018059126A1
WO2018059126A1 PCT/CN2017/096164 CN2017096164W WO2018059126A1 WO 2018059126 A1 WO2018059126 A1 WO 2018059126A1 CN 2017096164 W CN2017096164 W CN 2017096164W WO 2018059126 A1 WO2018059126 A1 WO 2018059126A1
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WO
WIPO (PCT)
Prior art keywords
remote
base station
information
relay
mobility
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PCT/CN2017/096164
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English (en)
Chinese (zh)
Inventor
黄莹
陈琳
陈玉芹
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中兴通讯股份有限公司
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Publication of WO2018059126A1 publication Critical patent/WO2018059126A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • 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

Definitions

  • the present application relates to, but is not limited to, the field of wireless communication technologies, and in particular, a method and apparatus for supporting mobility of a remote user equipment (UE, User Equipment).
  • UE Remote user equipment
  • D2D Device-to-Device
  • the application of D2D technology can reduce the burden of cellular networks, reduce the battery power consumption of user equipment, increase the data rate, and improve the robustness of the network infrastructure, which satisfies the requirements of the above high data rate services and proximity services.
  • D2D technology can work in licensed or unlicensed frequency bands, allowing multiple D2D-enabled user equipment (D2D User Equipment), which can be directly discovered by D2D UEs with or without network infrastructure.
  • D2D technology usually includes D2D discovery technology and D2D communication technology.
  • the D2D discovery technology is used to determine/determine the proximity between two or more D2D user equipments (for example, within a range in which D2D direct communication can be performed) or to determine/determine that the first user equipment is adjacent to the second user equipment.
  • D2D communication technology refers to a technology in which some or all of the communication data between D2D user equipments can communicate directly without going through the network infrastructure.
  • UE1 and UE2 perform data interaction under the coverage of the cellular network, and the user plane data does not pass through the network infrastructure, as shown in mode 1 of FIG. 1;
  • UE relay transmission in the weak/uncovered area allows UE4 with poor signal quality to communicate with the network through UE3 with network coverage nearby, which can help operators expand coverage and increase capacity. ;
  • the D2D UE can serve as a relay node, so that the cellular network coverage edge or the remote remote D2D UE (distal D2D UE) can perform cellular communication with the network through the relay node UE, and The D2D communication is performed between the D2D UEs through the relay node UE.
  • a D2D UE also called a relay UE
  • a relay UE forwards data at Layer 3 (ie, IP layer) according to information such as a target IP address/port number, and in the R14D2D technology, considers a wearable device.
  • MTC Machine-Type-Communication
  • NB-IoT Near Band Internet of Things
  • the R14D2D adopts the layer 2 route forwarding mode.
  • the network element such as the base station and the MME (Mobility Management Entity) needs to maintain the context of the remote UE to perform some management control on the remote UE.
  • MTC Machine-Type-Communication
  • NB-IoT Near Band Internet of Things
  • the remote UE is out of coverage and communicates through the relay UE1 to access the network, and the relay UE1 (the relay 1 shown in FIG. 2) gradually moves out of the remote UE (as shown in FIG. 2).
  • the remote UE is replaced by the access network through the relay UE2 (the relay 2 shown in FIG. 2) to communicate.
  • the remote UE accessing the network through the relay UE may need to be replaced to communicate directly through the base station to access the network.
  • Embodiments of the present invention provide a method and apparatus for supporting mobility of a remote user equipment, which can The handover between the relay UE and the base station and the handover between the relay UEs are performed smoothly to ensure the service continuity of the D2D service.
  • An embodiment of the present invention provides a method for supporting mobility of a remote user equipment, where the method includes:
  • the remote UE sends mobility related information to the base station, so that the base station performs mobility related operations for the remote UE;
  • the remote UE receives communication configuration information from the base station.
  • the embodiment of the invention further provides a method for supporting mobility of a remote user equipment, the method comprising:
  • the base station performs mobility related operations for the remote UE.
  • An embodiment of the present invention provides an apparatus for supporting mobility of a remote user equipment, where the apparatus includes:
  • a sending unit configured to send mobility related information to the base station, so that the base station performs mobility related operations for the remote UE;
  • the first receiving unit is configured to receive communication configuration information from the base station.
  • An embodiment of the present invention further provides an apparatus for supporting mobility of a remote user equipment, where the apparatus includes:
  • a second receiving unit configured to receive mobility related information sent by the remote UE
  • An execution unit configured to perform mobility related operations for the remote UE.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the above method for supporting remote user device mobility.
  • the remote UE sends mobility related information to the base station, so that the base station performs mobility related operations for the remote UE; and the remote UE receives communication configuration information from the base station.
  • the embodiment of the present invention implements the remote UE mobility in the layer 2 routing mode, the handover between the relay UE and the base station, and the smooth handover between the relay UEs to ensure the service continuity of the D2D service.
  • Figure 1 is a schematic diagram of an application mode of the R12/R13D2D technology
  • FIG. 2 is a schematic diagram of a mobility scenario under the R14D2D technology
  • FIG. 3 is a schematic flowchart 1 of a method for supporting mobility of a remote user equipment according to an embodiment of the present invention
  • FIG. 4 is a second schematic flowchart of a method for supporting mobility of a remote user equipment according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of Embodiment 1 of the present invention.
  • Embodiment 5 of the present invention is a schematic flowchart of Embodiment 5 of the present invention.
  • Embodiment 6 of the present invention is a schematic flowchart of Embodiment 6 of the present invention.
  • FIG. 11 is a first schematic structural diagram of an apparatus for supporting mobility of a remote user equipment according to an embodiment of the present invention.
  • FIG. 12 is a second structural diagram of an apparatus for supporting mobility of a remote user equipment according to an embodiment of the present invention.
  • FIG. 13 is a block diagram showing the hardware structure of a terminal or a base station according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for supporting mobility of a remote user equipment according to an embodiment of the present invention.
  • the method for supporting mobility of a remote user equipment in this example is applied to a remote UE side, as shown in FIG. 3,
  • a method of supporting remote user device mobility includes the following steps:
  • Step 301 The remote UE sends mobility related information to the base station, so that the base station performs mobility related operations for the remote UE.
  • Step 302 The remote UE receives communication configuration information from the base station.
  • the mobility related information includes at least one of the following:
  • Direct connection indication information ; relay indication information; relay UE identification information; access technology for the remote UE to access the relay UE; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; And user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; uplink and downlink forwarding indication information; target cell identity; target base station identity; cell identity information served by the target relay UE/connected relay UE; Base station identification information for the target relay UE/connected relay UE; PC5 link quality information measured by the remote UE and the relay UE; the serving cell and/or the neighboring cell measured by the remote UE Uu Link Radio Resource Management (RRM) measurement information; remote UE identification information.
  • RRM Link Radio Resource Management
  • the relay UE identifier information is a relay UE connected by the remote UE, or a relay UE paired by the remote UE, or a relay UE associated with the remote UE, or a remote UE.
  • the identification information of the selected relay UE is a relay UE connected by the remote UE, or a relay UE paired by the remote UE, or a relay UE associated with the remote UE, or a remote UE.
  • the access technology for the remote UE to access the relay UE includes one of the following: a third generation partnership project (3GPP) technology; a non-3rd generation partnership program (non-3GPP) Technology; sidelink communication; wireless local area network (WiFi); Bluetooth.
  • 3GPP third generation partnership project
  • non-3GPP non-3rd generation partnership program
  • sidelink communication wireless local area network (WiFi); Bluetooth.
  • the method before the remote UE sends the mobility related information to the base station, the method further includes:
  • the remote UE receives the mobility measurement threshold information configured by the base station by using a system message or a radio resource control (RRC, Radio Resource Control) dedicated signaling; or the remote UE obtains the mobility measurement threshold by using a pre-configured manner. Value information.
  • RRC Radio Resource Control
  • the mobility measurement threshold information includes at least one of the following:
  • the PC5 link measures the offset.
  • the method before the remote UE sends the mobility related information to the base station, the method further includes at least one of the following:
  • the PC5 link quality measurement value between the remote UE and the relay UE is greater than or equal to the PC5 link measurement threshold value
  • the PC5 link quality measurement value between the remote UE and the relay UE is less than or equal to the PC5 link measurement threshold.
  • the serving cell RRM measurement value is less than or equal to the serving cell RRM measurement threshold value
  • the serving cell RRM measurement value is greater than or equal to the serving cell RRM measurement threshold value
  • the PC5 link quality measurement value between the remote UE and the neighboring relay UE minus the PC5 link quality measurement value between the remote UE and the serving relay UE is greater than or equal to the PC5 link measurement offset.
  • the remote UE receives the mobility measurement threshold information from the base station through the Uu interface; or the remote UE receives the mobile terminal-received mobile forwarding from the relay UE through the PC5 interface.
  • Sexual measurement threshold information In the embodiment of the present invention, the remote UE receives the mobility measurement threshold information from the base station through the Uu interface; or the remote UE receives the mobile terminal-received mobile forwarding from the relay UE through the PC5 interface.
  • the remote UE sends the mobility related information to the base station, including:
  • the remote UE sends the mobility related information to the base station through the Uu interface; or the remote UE sends the mobility related information to the relay UE, and the mobility related information is sent to the base station by the relay UE.
  • the remote UE sends the mobility related information to the base station, including at least one of the following:
  • the remote UE sends the mobility related information to the base station by using an RRC connection request message
  • the remote UE sends the mobility related information to the base station by using an RRC connection reestablishment message
  • the remote UE sends the mobility related information to the base station by using a side link UE information message
  • the remote UE sends mobility related information to the base station by using a measurement report message
  • the remote UE sends the mobility related information to the base station by adding a RRC message.
  • the remote UE sends mobility related information to the base station by using an RRC connection request message, including:
  • the remote UE includes the cause value indication information in the RRC connection request message, where the cause value indication information is used to indicate at least one of the following: the remote UE is changed from being accessed by the relay UE to being connected by the base station The mode of the access is changed from the mode of access by the base station to the mode of access by the relay UE.
  • the serving base station of the remote UE does not change, and the serving base station of the remote UE changes.
  • the remote UE sends mobility related information to the base station by using an RRC connection reestablishment message, including:
  • the remote UE includes the cause value indication information in the RRC connection reestablishment message, where the cause value indication information is used to indicate at least one of the following: the remote UE is changed from being accessed by the relay UE to being connected by the base station The mode of the access is changed from the mode of access by the base station to the mode of access by the relay UE.
  • the serving base station of the remote UE does not change, and the serving base station of the remote UE changes.
  • the method before the remote UE sends the mobility related information to the base station, the method includes at least one of the following:
  • the remote UE receives the UE identity information allocated by the base station from the relay UE or the base station, and the UE identity information includes one of the following: a Cell Radio Network Temporary Identifier (C-RNTI), and an S1 application protocol identifier.
  • C-RNTI Cell Radio Network Temporary Identifier
  • S1 Application Protocol Identifier S1AP ID
  • X2AP ID X2 Application Protocol Identifier
  • GTP TEID GPRS Tunneling Protocol Endpoint Identifier
  • the remote UE receives the cell identity information of the serving cell from the relay UE or the base station, where the cell identity information includes an E-UTRAN Cell Global Identifier (ECGI) and/or a Physical Cell Identifier (Physical Cell Identifier). PCI) information.
  • E-UTRAN Cell Global Identifier ECGI
  • Physical Cell Identifier Physical Cell Identifier
  • the remote UE receives the communication configuration information from the base station, including:
  • the remote UE receives the communication configuration information from the base station through the Uu interface; or the remote UE
  • the communication configuration information is received by the UE, and the communication configuration information is received by the relay UE from the base station.
  • the communication configuration information includes at least one of the following:
  • Direct connection indication information ; relay indication information; relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; Indication information; uplink and downlink forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; PC5 connection release information; remote UE identification information.
  • the bearer mapping configuration information includes at least one of the following:
  • mapping relationship between the logical channel of the PC5 interface and the logical channel of the Uu interface is the mapping relationship between the logical channel of the PC5 interface and the logical channel of the Uu interface.
  • the mapping relationship between the PC5 interface and the EPS bearer/Uu interface bearer of the evolved packet system is PPPP-QCI (PPPP: ProSe Per-Packet Priority, proximity service packet priority; QCI: QoS Class Identifier, service) Quality level identification) mapping table, or QCI (QoS Class Identifier) for PC5 interface - QCI mapping table for Uu interface; Evolved packet system EPS bearer/Uu interface bears between PC5 interface bearers
  • the mapping relationship is a QCI-PPPP mapping table, or a QCI for the Uu interface - a QCI mapping table for the PC5 interface.
  • the method further includes at least one of the following:
  • the remote UE initiates a PC5 connection establishment process to the relay UE;
  • the remote UE initiates a PC5 connection release process to the relay UE;
  • the remote UE communicates by relaying the relay function of the UE
  • the remote UE directly communicates through the base station
  • the remote UE sends the mobility related information to the MME of the remote UE.
  • the remote UE sends the mobility related information to the remote UE.
  • the MME so that the MME of the remote UE updates the context of the remote UE according to the received mobility related information.
  • FIG. 4 is a schematic flowchart of a method for supporting mobility of a remote user equipment according to an embodiment of the present invention.
  • the method for supporting mobility of a remote user equipment in this example is applied to a base station side. As shown in FIG. 4, the support is far.
  • the method for end user device mobility includes the following steps:
  • Step 401 The base station receives the mobility related information sent by the remote UE.
  • Step 402 The base station performs mobility related operations for the remote UE.
  • the mobility related information includes at least one of the following:
  • Direct connection indication information ; relay indication information; relay UE identification information; access technology for the remote UE to access the relay UE; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; And user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; uplink and downlink forwarding indication information; target cell identity; target base station identity; cell identity information served by the target relay UE/connected relay UE; Base station identification information for the target relay UE/connected relay UE; PC5 link quality information measured by the remote UE and the relay UE; the serving cell and/or the neighboring cell measured by the remote UE Uu link RRM measurement information; remote UE identification information.
  • the relay UE identifier information is a relay UE connected by the remote UE, or a relay UE paired by the remote UE, or a relay UE associated with the remote UE, or a remote UE.
  • the identification information of the selected relay UE is a relay UE connected by the remote UE, or a relay UE paired by the remote UE, or a relay UE associated with the remote UE, or a remote UE.
  • the access technology for the remote UE to access the relay UE includes one of the following: 3GPP technology; non-3GPP technology; sidelink communication; WiFi; Bluetooth.
  • the base station receives the mobility related information sent by the remote UE, including:
  • the base station receives the mobility related information sent by the remote UE through the Uu interface; or the base station receives the mobility related information sent by the relay UE by using the Uu interface, where the mobility related information sent by the relay UE is from the remote end by the relay UE. Received at the UE.
  • the base station receives the mobility related information sent by the remote UE, including at least one of the following:
  • the base station receives the mobility related information from the remote UE by adding a RRC message.
  • the base station performs mobility related operations for the remote UE, including at least one of the following:
  • the base station updates context information of the remote UE according to the received mobility related information
  • the base station initiates a handover procedure for the remote UE.
  • the communication configuration information includes at least one of the following:
  • Direct connection indication information ; relay indication information; relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; Indication information; uplink and downlink forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; PC5 connection release information; remote UE identification information.
  • the base station sends the mobility related information to the MME of the remote UE, so that the MME of the remote UE updates the context of the remote UE according to the received mobility related information.
  • the base station initiates a handover procedure for the remote UE, where the base station sends mobility related information to a target base station or a serving base station of a target relay UE, where the base station is to a target base station or
  • the mobility related information transmitted by the serving base station of the target relay UE is the same as or different from the mobility related information received from the remote UE.
  • the base station sends the mobility related information to the target base station or the serving base station of the target relay UE, including:
  • the MME Transmitting, by the base station, the mobility related information to the serving base station of the target base station or the target relay UE by using an X2 handover request message of the X2 interface; or sending, by the base station, the mobility related to the MME by using a handover required message of the S1 interface Information, the MME sends mobility related information to the target base station or the serving base station of the target relay UE through a handover request message of the S1 interface.
  • the method further includes at least one of the following:
  • the serving base station of the target base station or the target relay UE sends communication configuration information to the relay UE;
  • the serving base station of the target base station or the target relay UE sends communication configuration information to the remote UE;
  • the serving base station of the target base station or the target relay UE sends the mobility related information to the MME of the remote UE.
  • the method further includes at least one of the following:
  • the base station transmits communication configuration information to the relay UE.
  • This embodiment describes a mobility support method in a scenario where a remote UE switches from a base station to a relay UE.
  • the remote UE directly performs data transmission with the base station, and then communicates with the network through the relay forwarding of the relay UE.
  • the serving cell/base station of the relay UE is the same as the original serving cell/base station of the remote UE.
  • the method of this embodiment includes the following steps:
  • Step 501 The remote UE that performs data transmission with the base station finds that the remote UE is connected through the relay discovery process. If the remote UE finds multiple accessible relay UEs, the relay UE with the best link quality of the PC5 is selected. The remote UE tends to select a relay UE that has the same serving cell/base station as the far end UE.
  • Step 502 The remote UE determines that the serving cell/base station of the selected relay UE is the same as its own serving cell/base station.
  • the remote UE may obtain the serving cell/base station identification information of the relay UE from the relay UE in a broadcast or unicast manner, for example, through a relay discovery message, or a PC5 connection establishment process.
  • the remote UE detects that the serving cell RRM measurement value (for example, the RSRP (Reference Signal Receiving Power) value) is less than or equal to the serving cell RRM measurement threshold, and/or the PC5 chain with the relay UE
  • the path quality measurement value (for example, the RSRP value) is greater than or equal to the PC5 link measurement threshold value; wherein the serving cell RRM measurement threshold value and/or the PC5 link measurement threshold value is a base station through system message or an RRC proprietary message. Configured, or pre-configured.
  • the remote UE sends the mobility related information to the base station, where the mobility related information includes one or a combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downstream forwarding indication information; cell identity information served by the target relay UE/connected relay UE; base station identity information served by the target relay UE/connected relay UE; and measured by the remote UE and the relay UE PC5 link quality information; remote UE identification information;
  • the remote UE may send the mobility related information to the base station by using one or more of the following messages: 1) an RRC connection request message; 2) an RRC connection reestablishment message; 3) a sidelink UE information message; 4) a measurement report message; 5) a new If the RRC connection request message or the RRC connection reestablishment message is used, the RRC connection request message or the RRC connection reestablishment message needs to include the cause value indication information; the cause value indication information is used to indicate that the remote UE is accessed by the base station. The mode is changed to the mode of access by the relay UE, and/or the serving base station of the remote UE does not change. For example, the remote UE sends the mobility related information to the base station through the sidelink UE information message and the measurement report message, respectively.
  • Step 503 The base station determines that the serving cell/base station of the relay UE or the target relay UE connected to the remote UE is the same as itself.
  • the base station After receiving the mobility related information sent by the remote UE, the base station updates the stored context information of the remote UE, so that the data packet from the remote UE received from the relay UE can be correctly processed, and the The data packet of the remote UE received by the core network element is correctly sent to the remote UE through the corresponding relay UE.
  • the base station sends the communication configuration information to the remote UE, where the communication configuration information may include one or a combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information;
  • the base station may send the communication configuration information to the remote UE through an RRC reconfiguration message.
  • the Uu bearer configuration information includes a bearer to add or modify or delete configuration information.
  • the bearer mapping configuration information includes a mapping relationship between the EPS bearer/Uu bearer and the PC5 interface bearer; the mapping relationship between the EPS bearer/Uu bearer and the PC5 interface bearer may be a QCI-PPPP mapping table.
  • Step 504 The remote UE sends a direct communication request message to the relay UE to request to establish a PC5 connection with the relay UE.
  • Step 505 The relay UE sends a sidelink UE information message to the base station, where the remote UE identifier is included, for example, the ProSe layer 2 ID of the remote UE.
  • Step 506 The base station sends an RRC reconfiguration message to the remote UE, where the RRC reconfiguration message may include communication configuration information, where the communication configuration information may include one or a combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information;
  • step 506 is not limited.
  • Step 507 The base station sends an RRC reconfiguration message to the relay UE, where the RRC reconfiguration message is sent.
  • the communication configuration information may be included, where the communication configuration information may include one or a combination of the following:
  • Bearer information to be forwarded control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; uplink and downlink forwarding indication information; PC5 bearer configuration information; PC5 Resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information;
  • the Uu bearer configuration information may include a bearer configuration dedicated to relay forwarding.
  • the bearer mapping configuration information includes one or a combination of the following: the mapping relationship between the bearer of the PC5 interface and the bearer of the Uu interface; the mapping relationship between the bearer of the Uu interface and the bearer of the PC5 interface; the mapping relationship between the bearer of the PC5 interface and the bearer of the Uu interface can be It is a PPPP-QCI mapping table; the mapping relationship between the Uu interface and the bearer of the PC5 interface can be a QCI-PPPP mapping table.
  • Step 508 The relay UE sends a direct communication response message to the remote UE.
  • step 508 is not limited.
  • Step 509 The remote UE initiates a NAS (Non-Access Stratum) process, and sends mobility related information to the MME. After receiving the MME, the MME updates the stored context information of the remote UE. Alternatively, the base station sends the mobility related information to the MME through the S1 interface UE related procedure. After receiving the MME, the MME updates the stored context information of the remote UE.
  • NAS Non-Access Stratum
  • the mobility related information includes one or a combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; remote UE identification information;
  • This embodiment describes a mobility support method in a scenario where a remote UE switches from a base station to a relay UE.
  • the remote UE and the base station directly perform data transmission, and then communicate with the network through the relay forwarding of the relay UE.
  • the serving cell/base station of the relay UE is different from the original serving cell/base station of the remote UE.
  • the method of this embodiment includes the following steps:
  • Step 601 The remote UE that performs data transmission with the base station finds that it can be connected through a relay discovery process. If the remote UE finds multiple accessible relay UEs, the relay UE with the best link quality of the PC5 is selected.
  • Step 602 The remote UE determines that the serving cell/base station of the connected relay UE is different from its own serving cell/base station.
  • the remote UE may obtain the serving cell/base station identification information of the relay UE from the relay UE in a broadcast or unicast manner, for example, through a relay discovery message, or a PC5 connection establishment process.
  • the remote UE detects that the serving cell RRM measurement (eg, RSRP value) is less than or equal to the serving cell RRM measurement threshold, and/or the PC5 link quality measurement (eg, RSRP value) with the relay UE is greater than Or equal to the PC5 link measurement threshold; wherein the serving cell RRM measurement threshold and/or the PC5 link measurement threshold are configured by the base station through system messages or RRC dedicated signaling, or are pre-configured. Then, the remote UE sends mobility related information to the serving base station (the source base station in FIG. 6), where the mobility related information includes one or a combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downstream forwarding indication information; cell identity information served by the target relay UE/connected relay UE; base station identity information served by the target relay UE/connected relay UE; and measured by the remote UE and the relay UE PC5 link quality information; Uu link RRM measurement information of the serving cell and/or the neighboring cell measured by the remote UE; remote UE identification information;
  • the remote UE may send the mobility related information to the serving base station by using one or more of the following messages: 1) an RRC connection request message; 2) an RRC connection reestablishment message; 3) a sidelink UE information message; 4) a measurement report message; If the RRC connection request message or the RRC connection reestablishment message is used, the RRC connection request message or the RRC connection reestablishment message needs to include the cause value indication information; the cause value indication information is used to indicate that the remote UE is accessed by the base station.
  • the mode is changed to the mode of access by the relay UE, and/or the serving base station of the remote UE is changed. For example, the remote UE sends the mobility related information to the serving base station through the sidelink UE information message and the measurement report message, respectively.
  • Step 603 The base station (ie, the source base station) determines that the serving cell/base station of the relay UE (also referred to as the target relay UE) selected by the remote UE is different from itself.
  • Base station ie source base station
  • the serving base station also referred to as the target base station
  • the switching process may be an S1 switching process or an X2 switching process. In this embodiment, the X2 switching process is taken as an example.
  • the source base station sends an X2 handover request message to the target base station.
  • the source base station includes mobility related information in the X2 handover request message, where the mobility related information includes one or any combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; remote UE identification information;
  • Step 604 The target base station sends an X2 handover request acknowledgement message to the source base station after performing the admission control on the remote UE.
  • the communication configuration information may be included in the message, wherein the communication configuration information includes one or any combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downstream forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information; wherein the bearer mapping configuration information includes an EPS bearer/Uu bearer between the PC5 interface bearers
  • the mapping relationship between the EPS bearer/Uu bearer and the PC5 interface bearer may be a QCI-PPPP mapping table.
  • the remote UE identifier information is the UE identifier information allocated by the target base station to the remote UE.
  • Step 605 The source base station sends an RRC connection reconfiguration message to the remote UE.
  • the RRC Connection Reconfiguration message message includes communication configuration information.
  • the communication configuration information is received by the source base station from the target base station.
  • the communication configuration information includes one or any combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information;
  • the bearer mapping configuration information includes a mapping relationship between the EPS bearer/Uu bearer and the PC5 interface bearer; the mapping relationship between the EPS bearer/Uu bearer and the PC5 interface bearer may be a QCI-PPPP mapping table.
  • Step 606 The remote UE sends an RRC reconfiguration complete message to the base station.
  • Step 607 The remote UE sends a direct communication request message to the relay UE to request to establish a PC5 connection with the relay UE.
  • Step 608 The relay UE sends a direct communication response message to the remote UE.
  • step 608 is not limited.
  • Step 609 The relay UE sends a sidelink UE information message to the base station, where the remote UE identifier is included, for example, the ProSe layer 2 ID of the remote UE.
  • Step 610 The base station sends an RRC reconfiguration message to the relay UE, where the RRC reconfiguration message may include communication configuration information, where the communication configuration information may include one or a combination of the following:
  • Bearer information to be forwarded control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; uplink and downlink forwarding indication information; PC5 bearer configuration information; PC5 Resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information;
  • the Uu bearer configuration information may include a bearer configuration dedicated to relay forwarding.
  • the bearer mapping configuration information includes one or a combination of the following: the mapping relationship between the bearer of the PC5 interface and the bearer of the Uu interface; the mapping relationship between the bearer of the Uu interface and the bearer of the PC5 interface; the mapping relationship between the bearer of the PC5 interface and the bearer of the Uu interface can be It is a PPPP-QCI mapping table; the mapping relationship between the Uu interface and the bearer of the PC5 interface can be a QCI-PPPP mapping table.
  • the relay UE transmits an RRC reconfiguration complete message to the target base station.
  • Step 611 The base station sends an RRC reconfiguration message to the remote UE, where the RRC reconfiguration message may include communication configuration information, where the communication configuration information may include one or a combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; Identification information;
  • step 611 The chronological order of step 611 is not limited.
  • Step 612 The source base station sends an SN state transition message to the target base station.
  • Step 613 The remote UE sends an RRC connection reconfiguration complete message to the target base station.
  • the remote UE may send the RRC connection reconfiguration complete message to the target base station directly through the Uu interface; or the remote UE may send the RRC connection reconfiguration complete message to the relay UE through the PC5 interface, and the relay UE connects the RRC connection again.
  • a reconfiguration complete message is sent to the target base station.
  • Step 614 The target base station sends a path transfer request message to the MME of the remote UE.
  • the path transfer request message may include mobility related information, where the mobility related information includes one or any combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; remote UE identification information;
  • Step 615 The MME of the remote UE sends a bearer modification request message to the SGW (Serving GateWay) to update the downlink routing path at the SGW.
  • SGW Serving GateWay
  • Step 616 The SGW of the remote UE returns a bearer modification response message to the MME.
  • Step 617 The MME of the remote UE sends a path transfer request acknowledgement message to the target base station.
  • Step 618 The target base station sends a user context release message to the source base station to release the context of the remote UE on the target base station.
  • This embodiment describes a mobility support method in a scenario where a remote UE switches from a relay UE to a base station.
  • the remote UE communicates with the network through the relay forwarding of the relay UE, and then directly performs data transmission with the base station, and the serving cell/base station of the relay UE is the same as the target serving cell/base station accessed by the remote UE.
  • the method of this embodiment includes the following steps:
  • Step 701 The relaying UE sends a PC5 connection release message to the remote UE to release the PC5 connection between the relay UE and the remote UE. For example, if the relay UE detects that the power is insufficient, the UE sends the message. Alternatively, the remote UE detects that the PC5 link quality with the relay UE is poor, or the remote UE detects that the PC5 link quality with the relay UE is lower than a specific threshold.
  • the threshold may be configured by the base station through system messages or RRC proprietary signaling, or pre-configured.
  • Step 702 The remote UE performs a relay selection/reselection process, and/or a cell selection/reselection process, or a serving cell/adjacent cell RRM measurement process.
  • the remote UE does not find an accessible relay UE, and determines that it directly communicates through the current serving base station.
  • the remote UE determines that the serving cell/base station of the relay UE is the same as the serving cell/base station of the remote UE.
  • the remote UE may obtain the serving cell/base station identification information of the relay UE from the relay UE in a broadcast or unicast manner, for example, through a relay discovery message, or a PC5 connection establishment process.
  • the remote UE detects that the serving cell RRM measurement (eg, RSRP value) is greater than or equal to the serving cell RRM measurement threshold, and/or the PC5 link quality measurement between the relay UE ( For example, the RSRP value is less than or equal to the PC5 link measurement threshold; wherein the serving cell RRM measurement threshold and/or the PC5 link measurement threshold is configured by the base station through system messages or RRC dedicated signaling, or It is pre-configured.
  • the remote UE sends the mobility related information to the serving base station, where the mobility related information includes one or a combination of the following:
  • Direct connection indication information For example, Direct connection indication information; relay UE identification information; target cell identifier; target base station identifier; PC5 link quality information measured by the remote UE and the relay UE; and remote UE identification information;
  • the remote UE may send the mobility related information to the base station by using one or more of the following messages: 1) an RRC connection request message; 2) an RRC connection reestablishment message; 3) a sidelink UE information message; 4) a measurement report message; 5) a new If the RRC connection request message or the RRC connection reestablishment message is used, the RRC connection request message or the RRC connection reestablishment message needs to include the cause value indication information; the cause value indication information is used to indicate that the remote UE is connected from the relay UE.
  • the incoming mode is changed to the mode of access by the base station, and/or the serving base station of the remote UE does not change. For example, the remote UE sends the mobility related information to the base station through the sidelink UE information message and the measurement report message, respectively.
  • Step 703 The base station determines that the serving cell/base station of the relay UE connected to the remote UE is in phase with itself. Similarly, the base station determines the context information of the existing remote UE.
  • the base station after receiving the mobility related information sent by the remote UE, the base station updates the stored context information of the remote UE, so that the data packet of the remote UE that can be received from the core network element is correct. Send to the remote UE.
  • the base station may send the communication configuration information to the remote UE by using an RRC reconfiguration message.
  • the communication configuration information may include one or a combination of the following:
  • Step 704 The remote UE sends a PC5 connection release message to the relay UE to release the PC5 connection between the remote UE and the relay UE.
  • Step 705 The base station sends an RRC reconfiguration message to the relay UE, where the RRC reconfiguration message may include communication configuration information, where the communication configuration information may include one or a combination of the following:
  • Direct connection indication information PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; PC5 connection release information; remote UE identification information;
  • Step 706 The remote UE initiates a NAS process, and sends mobility related information to the MME. After receiving the MME, the MME updates the stored context information of the remote UE. Alternatively, the base station sends the mobility related information to the MME through the S1 interface UE related procedure. After receiving the MME, the MME updates the stored context information of the remote UE.
  • the mobility related information includes one or a combination of the following: direct connection indication information; relay UE identification information; and remote UE identification information;
  • This embodiment describes a mobility support method in a scenario where a remote UE switches from a relay UE to a base station.
  • the remote UE communicates with the network through the relay forwarding of the relay UE, and then directly performs data transmission with the base station, and the serving cell/base station of the relay UE and the target serving cell/base station accessed by the remote UE are not the same.
  • the method of this embodiment includes the following steps:
  • Step 801 The relay UE sends a PC5 connection release message to the remote UE to release the relay UE.
  • the PC5 connection with the remote UE for example, the relay UE detects that its own power is insufficient, and sends the message.
  • the remote UE detects that the PC5 link quality with the relay UE is poor, or the remote UE detects that the PC5 link quality with the relay UE is lower than a specific threshold.
  • the threshold may be configured by the base station through system messages or RRC proprietary signaling, or pre-configured.
  • Step 802 The remote UE performs a relay selection/reselection process, and/or a cell selection/reselection process, or a serving cell/neighboring cell RRM measurement process.
  • the remote UE does not find the relay UE that can be accessed, and selects the cell under the target base station as the candidate cell.
  • the remote UE determines that the serving cell/base station of the relay UE is different from the candidate/target cell/base station of the remote UE.
  • the remote UE may obtain the serving cell/base station identification information of the relay UE from the relay UE in a broadcast or unicast manner, for example, through a relay discovery message, or a PC5 connection establishment process.
  • the remote UE detects that the serving cell RRM measurement (eg, RSRP value) is greater than or equal to the serving cell RRM measurement threshold, and/or the PC5 link quality measurement between the relay UE ( For example, the RSRP value is less than or equal to the PC5 link measurement threshold; wherein the serving cell RRM measurement threshold and/or the PC5 link measurement threshold is configured by the base station through system messages or RRC dedicated signaling, or It is pre-configured.
  • the remote UE sends the mobility related information to the serving base station (also referred to as the source base station), and the remote UE can directly send the mobility related information to the source base station through the Uu interface, or the remote UE can first send the mobility through the PC5 interface.
  • the related information is sent to the relay UE, and the relay UE sends the mobility related information to the source base station through the Uu interface.
  • the mobility related information includes one or a combination of the following:
  • Direct connection indication information For example, Direct connection indication information; relay UE identification information; target cell identifier; target base station identifier; PC5 link quality information measured by the remote UE and the relay UE; and remote UE identification information;
  • the remote UE may send the mobility related information to the base station by using one or more of the following messages: 1) an RRC connection request message; 2) an RRC connection reestablishment message; 3) a sidelink UE information message; 4) a measurement report message; 5) a new If the RRC connection request message or the RRC connection reestablishment message is used, the RRC connection request message or the RRC connection reestablishment message needs to include the cause value indication information; the cause value indication information is used to indicate that the remote UE is connected from the relay UE.
  • the incoming mode is changed to the mode of access by the base station, and/or the serving base station of the remote UE is changed. For example, the remote UE will move through the sidelink UE information message and the measurement report message respectively.
  • Related information is sent to the base station.
  • Step 803 The base station (ie, the source base station) determines that the target cell/base station selected by the remote UE is different from itself.
  • the base station ie, the source base station
  • the handover process may be an S1 handover process or an X2 handover process.
  • the X2 handover process is taken as an example.
  • the source base station sends an X2 handover request message to the target base station.
  • the source base station includes mobility related information in the X2 handover request message, where the mobility related information includes one or any combination of the following:
  • Direct connection indication information target cell identity; target base station identity; remote UE identity information;
  • Step 804 The target base station sends an X2 handover request acknowledgement message to the source base station after performing the admission control on the remote UE.
  • the communication configuration information may be included in the message, wherein the communication configuration information includes one or any combination of the following:
  • Step 805 The source base station sends an RRC connection reconfiguration message to the remote UE.
  • the RRC Connection Reconfiguration message message includes communication configuration information.
  • the communication configuration information is received by the source base station from the target base station.
  • the communication configuration information includes one or any combination of the following:
  • Step 806 The source base station sends an SN state transition message to the target base station.
  • Step 807 The remote UE sends an RRC connection reconfiguration complete message to the target base station.
  • Step 808 The remote UE sends a PC5 connection release message to the relay UE to release the PC5 connection between the remote UE and the relay UE.
  • Step 809 The target base station sends a path transfer request message to the MME of the remote UE.
  • the path-transition request message may include mobility-related information, where the mobility-related information includes one or any combination of the following: direct connection indication information; target cell identifier; target base station identifier; and remote UE identifier information;
  • Step 810 The MME of the remote UE sends a bearer modification request message to the SGW to update the downlink routing path at the SGW.
  • Step 811 The SGW of the remote UE returns a bearer modification response message to the MME.
  • Step 812 The MME of the remote UE sends a path transfer request acknowledgement message to the target base station.
  • Step 813 The target base station sends a user context release message to the source base station to release the context of the remote UE on the target base station.
  • Step 814 The source base station sends an RRC message to the relay UE to instruct the relay UE to release the context information of the remote UE.
  • the source base station may indicate by using an RRC connection reconfiguration message, or other newly added RRC message indication.
  • This embodiment describes a mobility support method in a scenario where a remote UE switches from relay UE1 to relay UE2.
  • the remote UE communicates with the network through the relay forwarding of the relay UE1, and then communicates with the network through the relay forwarding of the relay UE2, and the serving cell/base station of the relay UE1 is the same as the serving cell/base station of the relay UE2.
  • the method of this embodiment includes the following steps:
  • Step 901 The remote UE discovers the accessible relay UE2 through the relay discovery or relay reselection process. If the remote UE finds multiple accessible relay UEs, the UE 5 selects the best relay UE with the best link quality. The remote UE tends to select a relay UE that has the same serving cell/base station as the far end UE.
  • Step 902 The remote UE determines that the serving cell/base station of the selected target relay UE is the same as its own serving cell/base station.
  • the remote UE may obtain the serving cell/base station identification information of the relay UE from the relay UE in a broadcast or unicast manner, for example, through a relay discovery message or a PC5 connection establishment process.
  • the remote UE detects that the PC5 link quality measurement value between the remote UE and the serving relay UE is greater than or equal to the PC5 link quality measurement value between the remote UE and the serving relay UE.
  • the PC5 link measures the offset; wherein the PC5 link measurement offset is configured by the base station through system messages or RRC dedicated signaling, or is pre-configured.
  • the remote UE sends a mobile to the base station Sex-related information, wherein the mobility related information includes one or a combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downstream forwarding indication information; cell identity information served by the target relay UE/connected relay UE; base station identity information served by the target relay UE/connected relay UE; and measured by the remote UE and the relay UE PC5 link quality information; remote UE identification information;
  • the remote UE may send the mobility related information to the base station by using one or more of the following messages: 1) an RRC connection request message; 2) an RRC connection reestablishment message; 3) a sidelink UE information message; 4) a measurement report message; 5) a new If the RRC connection request message or the RRC connection reestablishment message is used, the RRC connection request message or the RRC connection reestablishment message needs to include the cause value indication information; the cause value indication information is used to indicate that the remote UE is connected from the relay UE.
  • the incoming mode is changed to the mode of access by the relay UE, and/or the serving base station of the remote UE does not change.
  • the remote UE sends the mobility related information to the base station through the sidelink UE information message and the measurement report message, respectively.
  • Step 903 The base station determines that the serving cell/base station of the target relay UE selected by the remote UE is the same as itself.
  • the base station After receiving the mobility related information sent by the remote UE, the base station updates the stored context information of the remote UE, so that the data packet from the remote UE received from the relay UE can be correctly processed, and the The data packet of the remote UE received by the core network element is correctly sent to the remote UE through the corresponding relay UE.
  • the base station sends the communication configuration information to the remote UE, where the communication configuration information may include one or a combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information;
  • the base station may send the communication configuration information to the remote UE through an RRC reconfiguration message.
  • the Uu bearer configuration information includes a bearer to add or modify or delete configuration information.
  • the bearer mapping configuration information includes a mapping relationship between the EPS bearer/Uu bearer and the PC5 interface bearer; the mapping relationship between the EPS bearer/Uu bearer and the PC5 interface bearer may be a QCI-PPPP mapping table.
  • Step 904 The remote UE sends a direct communication request message to the target relay UE to request to establish a PC5 connection with the target relay UE.
  • Step 905 The target relay UE sends a sidelink UE information message to the base station, where the remote UE identifier is included, for example, the ProSe layer 2 ID of the remote UE.
  • Step 906 The base station sends an RRC reconfiguration message to the target relay UE, where the RRC reconfiguration message may include communication configuration information, where the communication configuration information may include one or a combination of the following:
  • Bearer information to be forwarded control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; uplink and downlink forwarding indication information; PC5 bearer configuration information; PC5 Resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information;
  • the Uu bearer configuration information may include a bearer configuration dedicated to relay forwarding.
  • the bearer mapping configuration information includes one or a combination of the following: the mapping relationship between the bearer of the PC5 interface and the bearer of the Uu interface; the mapping relationship between the bearer of the Uu interface and the bearer of the PC5 interface; the mapping relationship between the bearer of the PC5 interface and the bearer of the Uu interface can be It is a PPPP-QCI mapping table; the mapping relationship between the Uu interface and the bearer of the PC5 interface can be a QCI-PPPP mapping table.
  • Step 907 The base station sends an RRC reconfiguration message to the remote UE, where the RRC reconfiguration message may include communication configuration information, where the communication configuration information may include one or a combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information;
  • Step 908 The target relay UE sends a direct communication response message to the remote UE.
  • Step 909 The remote UE sends a PC5 connection release message to the source relay UE (the relay UE1) to release the PC5 connection between the remote UE and the relay UE1.
  • Step 910 The base station sends an RRC message to the relay UE1 to instruct the relay UE1 to release the context information of the remote UE.
  • the base station may indicate by means of an RRC connection reconfiguration message or other new RRC message indication.
  • steps 906, 907, 908, 910 is not limited.
  • Step 911 The remote UE initiates a NAS process, and sends mobility related information to the MME. After receiving the MME, the MME updates the stored context information of the remote UE. Alternatively, the base station sends the mobility related information to the MME through the S1 interface UE related procedure. After receiving the MME, the MME updates the stored context information of the remote UE.
  • the mobility related information includes one or a combination of the following: a relay indication information, a relay UE identification information, a bearer information to be forwarded, a control plane forwarding indication information, a user plane forwarding indication information, and a control plane and a user plane forwarding indication information. ; uplink forwarding indication information; downlink forwarding indication information; uplink and downlink forwarding indication information; remote UE identification information;
  • This embodiment describes a mobility support method in a scenario where a remote UE switches from relay UE1 to relay UE2.
  • the remote UE communicates with the network through the relay forwarding of the relay UE1, and then communicates with the network through the relay forwarding of the relay UE2, and the serving cell/base station of the relay UE1 and the serving cell/base station of the relay UE2 do not. the same.
  • the method of this embodiment includes the following steps:
  • Step 1001 The remote UE discovers the accessible relay UE2 through the relay discovery or relay reselection process, and if the remote UE finds multiple accessible relay UEs, selects the relay UE with the best link quality of the PC5.
  • Step 1002 The remote UE determines that the serving cell/base station of the selected target relay UE is different from its own serving cell/base station.
  • the remote UE may obtain the serving cell/base station identification information of the relay UE from the relay UE in a broadcast or unicast manner, for example, through a relay discovery message, or a PC5 connection establishment process.
  • the remote UE detects that the PC5 link quality measurement value between the remote UE and the serving relay UE is greater than or equal to the PC5 link quality measurement value between the remote UE and the serving relay UE.
  • the PC5 link measures the offset; wherein the PC5 link measurement offset is configured by the base station through system messages or RRC dedicated signaling, or is pre-configured.
  • the remote UE sends the mobility related information to the source base station, and the remote UE can directly send the mobility related information to the source base station through the Uu interface, or the remote UE first sends the mobility related information to the relay UE through the PC5 interface.
  • the relay UE then sends the mobility related information to the source base station through the Uu interface.
  • the mobility related information includes one or a combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downstream forwarding indication information; cell identity information served by the target relay UE/connected relay UE; base station identity information served by the target relay UE/connected relay UE; and measured by the remote UE and the relay UE PC5 link quality information; remote UE identification information;
  • the remote UE may send the mobility related information to the source base station by using one or more of the following messages: 1) an RRC connection request message; 2) an RRC connection reestablishment message; 3) a sidelink UE information message; 4) a measurement report message;
  • the RRC message is added; if the RRC connection request message or the RRC connection reestablishment message is used, the RRC connection request message or the RRC connection reestablishment message needs to include the cause value indication information; the cause value indication information is used to indicate the remote UE from the relay UE.
  • the mode of access is changed to the mode of access by the relay UE, and/or the serving base station of the remote UE is changed.
  • the remote UE sends the mobility related information to the base station through the sidelink UE information message and the measurement report message, respectively.
  • Step 1003 The base station (ie, the source base station) determines that the serving cell/base station of the relay UE (also referred to as the target relay UE) selected by the remote UE is different from itself.
  • the base station ie, the source base station
  • the handover process may be an S1 handover process or an X2 handover process. In this embodiment, the X2 handover process is taken as an example.
  • the source base station sends an X2 handover request message to the target base station.
  • the source base station includes mobility related information in the X2 handover request message, where the mobility related information includes one or any combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; remote UE identification information;
  • Step 1004 The target base station sends an X2 handover request acknowledgement message to the source base station after performing the admission control on the remote UE.
  • the communication configuration information may be included in the message, wherein the communication configuration information includes one or any combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downstream forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information; wherein the bearer mapping configuration information includes an EPS bearer/Uu bearer between the PC5 interface bearers
  • the mapping relationship between the EPS bearer/Uu bearer and the PC5 interface bearer may be a QCI-PPPP mapping table.
  • the remote UE identifier information is UE identifier information allocated by the target base station to the remote UE.
  • Step 1005 The source base station sends an RRC connection reconfiguration message to the remote UE.
  • the RRC Connection Reconfiguration message message includes communication configuration information.
  • the communication configuration information is received by the source base station from the target base station.
  • the communication configuration information includes one or any combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information;
  • the bearer mapping configuration information includes a mapping relationship between the EPS bearer/Uu bearer and the PC5 interface bearer; the mapping relationship between the EPS bearer/Uu bearer and the PC5 interface bearer may be a QCI-PPPP mapping table.
  • Step 1006 The remote UE sends an RRC reconfiguration complete message to the source base station.
  • Step 1007 The remote UE sends a direct communication request message to the relay UE to request to establish a PC5 connection with the relay UE.
  • Step 1008 The relay UE sends a direct communication response message to the remote UE.
  • the chronological order of step 1008 is not limited.
  • Step 1009 The relay UE sends a sidelink UE information message to the target base station, where the remote UE identifier is included, for example, the ProSe layer 2 ID of the remote UE.
  • Step 1010 The target base station sends an RRC reconfiguration message to the relay UE, where the RRC reconfiguration message may include communication configuration information, where the communication configuration information may include one or a combination of the following:
  • Bearer information to be forwarded control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; uplink and downlink forwarding indication information; PC5 bearer configuration information; PC5 Resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information;
  • the Uu bearer configuration information may include a bearer configuration dedicated to relay forwarding.
  • the bearer mapping configuration information includes one or a combination of the following: the mapping relationship between the bearer of the PC5 interface and the bearer of the Uu interface; the mapping relationship between the bearer of the Uu interface and the bearer of the PC5 interface; the mapping relationship between the bearer of the PC5 interface and the bearer of the Uu interface can be It is a PPPP-QCI mapping table; the mapping relationship between the Uu interface and the bearer of the PC5 interface can be a QCI-PPPP mapping table.
  • Step 1011 The target base station sends an RRC reconfiguration message to the remote UE, where the RRC reconfiguration message may include communication configuration information, where the communication configuration information may include one or a combination of the following:
  • Relay indication information relay UE identification information; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; Downward forwarding indication information; PC5 bearer configuration information; PC5 resource configuration information; Uu bearer configuration information; bearer mapping configuration information; remote UE identification information;
  • step 1011 The chronological order of step 1011 is not limited.
  • Step 1012 The source base station sends an SN state transition message to the target base station.
  • Step 1013 The remote UE sends an RRC connection reconfiguration complete message to the target base station.
  • the remote UE may send the RRC connection reconfiguration complete message to the target base station directly through the Uu interface; or the remote UE may send the RRC connection reconfiguration complete message to the relay UE through the PC5 interface, and the relay UE connects the RRC connection again.
  • a reconfiguration complete message is sent to the target base station.
  • Step 1014 The target relay UE sends an RRC connection reconfiguration complete message to the target base station.
  • Step 1015 The remote UE sends a PC5 connection release message to the source relay UE.
  • the target base station sends a path transfer request message to the MME of the remote UE.
  • the mobility related information may include mobility related information, where the mobility related information includes one or any combination of the following: relay indication information, relay UE identification information, bearer information to be forwarded, and control plane forwarding indication information; User plane forwarding indication information; control plane and user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; uplink and downlink forwarding indication information; remote UE identification information;
  • Step 1017 The MME of the remote UE sends a bearer modification request message to the SGW to update the downlink routing path at the SGW.
  • Step 1018 The SGW of the remote UE returns a bearer modification response message to the MME.
  • Step 1019 The MME of the remote UE sends a path transfer request acknowledgement message to the target base station.
  • Step 1020 The target base station sends a user context release message to the source base station to release the context of the remote UE on the target base station.
  • Step 1021 The source base station sends an RRC message to the relay UE1 to instruct the relay UE1 to release the context information of the remote UE.
  • the source base station may indicate by means of an RRC connection reconfiguration message or other new RRC message indication.
  • FIG. 11 is a first schematic structural diagram of an apparatus for supporting mobility of a remote user equipment according to an embodiment of the present invention. As shown in FIG. 11, the apparatus includes:
  • the sending unit 1101 is configured to send mobility related information to the base station, so that the base station performs mobility related operations for the remote UE;
  • the first receiving unit 1102 is configured to receive communication configuration information from the base station.
  • the mobility related information includes at least one of the following:
  • Direct connection indication information ; relay indication information; relay UE identification information; access technology for the remote UE to access the relay UE; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; And user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; uplink and downlink forwarding indication information; target cell identity; target base station identity; cell identity information served by the target relay UE/connected relay UE; Base station identification information for the target relay UE/connected relay UE; PC5 link quality information measured by the remote UE and the relay UE; the serving cell and/or the neighboring cell measured by the remote UE Uu link RRM measurement information; remote UE identification information.
  • the first receiving unit 1102 is further configured to receive the mobility measurement threshold information configured by the base station by using a system message or RRC dedicated signaling; or obtain the mobility measurement by using a pre-configured manner. Threshold information.
  • the sending unit 1101 is configured to send mobility related information to the base station through the Uu interface; or send mobility related information to the relay UE, and send the mobility related information to the relay UE by using the relay UE Base station.
  • the sending unit 1101 is configured to perform at least one of the following:
  • the mobility related information is sent to the base station by adding a RRC message.
  • the first receiving unit 1102 is further configured to receive the UE identification information allocated by the base station from the relay UE or the base station, where the UE identifier information includes one of the following: C-RNTI, S1AP ID, X2AP ID, GTP TEID;
  • the first receiving unit 1102 is further configured to receive cell identity information of a serving cell from the relay UE or the base station, where the cell identity information includes a cell global identifier ECGI and/or a physical cell identifier PCI information.
  • the first receiving unit 1102 is configured to receive a slave base station through a Uu interface. Receiving communication configuration information; or receiving communication configuration information from the relay UE, the communication configuration information being received by the relay UE from the base station.
  • the implementation functions of the units in the apparatus for supporting remote user equipment mobility shown in FIG. 11 can be understood by referring to the foregoing related description of the method for supporting the mobility of the remote user equipment.
  • the functions of the units in the apparatus for supporting the mobility of the remote user equipment shown in FIG. 11 can be implemented by a program running on the processor or by a logic circuit.
  • FIG. 12 is a second structural diagram of an apparatus for supporting mobility of a remote user equipment according to an embodiment of the present invention. As shown in FIG. 12, the apparatus includes:
  • the second receiving unit 1201 is configured to receive mobility related information sent by the remote UE.
  • Execution unit 1202 is configured to perform mobility related operations for the remote UE.
  • the mobility related information includes at least one of the following:
  • Direct connection indication information ; relay indication information; relay UE identification information; access technology for the remote UE to access the relay UE; bearer information to be forwarded; control plane forwarding indication information; user plane forwarding indication information; And user plane forwarding indication information; uplink forwarding indication information; downlink forwarding indication information; uplink and downlink forwarding indication information; target cell identity; target base station identity; cell identity information served by the target relay UE/connected relay UE; Base station identification information for the target relay UE/connected relay UE; PC5 link quality information measured by the remote UE and the relay UE; the serving cell and/or the neighboring cell measured by the remote UE Uu link RRM measurement information; remote UE identification information.
  • the second receiving unit 1201 is configured to receive the mobility related information sent by the remote UE through the Uu interface, or receive the mobility related information sent by the relay UE by using the Uu interface, where the relay The mobility related information transmitted by the UE is received by the relay UE from the remote UE.
  • the second receiving unit 1201 is configured to perform at least one of the following:
  • the mobility related information is received from the remote UE by adding a RRC message.
  • the executing unit 1202 is further configured to perform at least one of the following:
  • the implementation functions of the units in the apparatus for supporting remote user equipment mobility shown in FIG. 12 can be understood by referring to the foregoing related description of the method for supporting the mobility of the remote user equipment.
  • the functions of the units in the apparatus for supporting the mobility of the remote user equipment shown in FIG. 12 can be implemented by a program running on the processor or by a logic circuit.
  • FIG. 13 is a block diagram showing the hardware structure of a terminal or a base station according to an embodiment of the present invention.
  • the processor 1301 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), is configured to be stored.
  • FIG. 13 is merely illustrative and does not limit the structure of the apparatus of the above-described embodiments of the present invention. For example, more or less components than those shown in FIG. 13 may be included or have a different configuration than that shown in FIG.
  • the memory 1302 can be configured as a software program and a module for storing application software, such as program instructions/modules corresponding to the method for supporting remote user device mobility in the embodiment of the present invention, and the processor 1301 runs the software program stored in the memory 304. And the module, thereby performing various functional applications and data processing, that is, implementing the above method.
  • Memory 1302 can include high speed random access memory, and can also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
  • memory 1302 can further include memory remotely located relative to processor 1301, which can be connected via a network To the mobile terminal 30. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Transmission device 1303 is arranged to receive or transmit data via a network.
  • the network examples described above may include a wireless network provided by a communication provider of a terminal or a base station.
  • the transmission device 1303 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
  • the transmission device 1303 can be a Radio Frequency (RF) module configured to communicate with the Internet wirelessly.
  • NIC Network Interface Controller
  • RF Radio Frequency
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the above method for supporting remote user device mobility.
  • the application can take the form of a hardware embodiment, a software embodiment, or an embodiment in combination with software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow or block diagram of a flowchart.
  • the embodiment of the present invention implements the remote UE mobility in the layer 2 routing mode, the handover between the relay UE and the base station, and the smooth handover between the relay UEs to ensure the service continuity of the D2D service.

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

Abstract

L'invention concerne un procédé et un dispositif prenant en charge la mobilité d'un équipement utilisateur distant. Le procédé comprend les étapes suivantes : un équipement utilisateur (UE) distant transmet à une station de base des informations associées à la mobilité, pour permettre à la station de base d'effectuer une opération associée à la mobilité de l'UE distant ; et l'UE distant reçoit, en provenance de la station de base, des informations de configuration de communication.
PCT/CN2017/096164 2016-09-29 2017-08-07 Procédé et dispositif de prise en charge de mobilité d'équipement utilisateur distant WO2018059126A1 (fr)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111527770A (zh) * 2020-04-02 2020-08-11 北京小米移动软件有限公司 信息传输方法、装置、通信设备及存储介质
WO2021159823A1 (fr) * 2020-02-13 2021-08-19 中兴通讯股份有限公司 Procédé et appareil de commutation de liaison, procédé et appareil de configuration de commutation de liaison, nœud de communication, et support
CN113491162A (zh) * 2019-08-16 2021-10-08 Oppo广东移动通信有限公司 通信方法和通信装置
EP3913974A4 (fr) * 2019-02-15 2022-06-08 Huawei Technologies Co., Ltd. Procédé et appareil de communication à relais
US20220248480A1 (en) * 2021-02-03 2022-08-04 Qualcomm Incorporated Link combining and component carrier selection across sidelink and access link interfaces
EP4007363A4 (fr) * 2019-07-31 2022-09-14 Vivo Mobile Communication Co., Ltd. Procédé de commutation de réseau, dispositif de réseau et terminal
EP4080938A4 (fr) * 2020-03-25 2023-06-14 Vivo Mobile Communication Co., Ltd. Procédé et dispositif de commutation dans une architecture de relais de liaison latérale
WO2023150944A1 (fr) * 2022-02-09 2023-08-17 Oppo广东移动通信有限公司 Procédé de commutation, dispositif terminal et dispositif de réseau
EP4149128A4 (fr) * 2020-05-08 2023-11-01 Spreadtrum Communications (Shanghai) Co., Ltd. Ue distant et procédé de transmission de données associé, et ue relais et procédé de transmission de données associé
WO2023212484A1 (fr) * 2022-04-28 2023-11-02 Qualcomm Incorporated Coordination de réseau durant une commutation de trajet, et scénarios à trajets multiples
EP4247113A4 (fr) * 2020-12-09 2024-01-03 Huawei Tech Co Ltd Procédé, appareil et système de routage
EP4228296A4 (fr) * 2020-10-10 2024-04-03 Datang mobile communications equipment co ltd Procédé de transfert, terminal, dispositif de réseau et relais

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110545536B (zh) * 2018-05-29 2021-10-01 中兴通讯股份有限公司 一种d2d通信资源池数据传输的方法及装置
CN110662269B (zh) * 2018-06-28 2020-10-30 中国移动通信有限公司研究院 一种系统消息的发送方法、接收方法及设备
CN111148273B (zh) * 2018-11-02 2022-03-08 华为技术有限公司 用于确定传输链路的方法、终端设备和无线接入网设备
CN111212459B (zh) * 2018-11-22 2021-09-14 华为技术有限公司 一种中继通信方法及装置
CN111277356B (zh) 2018-12-05 2021-11-09 华为技术有限公司 侧行链路质量测量的方法和通信装置
CN111818593A (zh) * 2019-07-31 2020-10-23 维沃移动通信有限公司 一种网络切换方法及终端
JP7392844B2 (ja) * 2019-11-06 2023-12-06 富士通株式会社 車両通信サービスの通信方法、装置及び通信システム
US20220167263A1 (en) * 2019-11-28 2022-05-26 Apple Inc. Link Selection for an Idle or Inactive User Equipment
CN113038628B (zh) * 2019-12-09 2023-04-25 维沃移动通信有限公司 中继参数的配置方法、终端设备和网络侧设备
EP4114138A4 (fr) * 2020-03-30 2023-07-26 Kyocera Corporation Procédé de commande de communication
CN113543207B (zh) * 2020-04-20 2024-02-09 大唐移动通信设备有限公司 一种信息传输方法、网络设备及终端
CN117320170A (zh) * 2020-04-20 2023-12-29 大唐移动通信设备有限公司 一种信息传输方法、终端及网络设备
WO2021212316A1 (fr) * 2020-04-21 2021-10-28 Mediatek Singapore Pte. Ltd. Procédés et appareil de commutation de chemin pour relais ue-à-réseau de couche 3
CN113573422B (zh) * 2020-04-28 2023-10-20 维沃移动通信有限公司 远端终端的连接管理方法、终端及网络侧设备
CN113660680B (zh) * 2020-05-12 2023-11-07 维沃移动通信有限公司 副链路中继架构中的配置方法和设备
CN113676960B (zh) * 2020-05-13 2023-04-25 维沃移动通信有限公司 切换方法及装置、终端设备及网络设备
CN113747516B (zh) * 2020-05-27 2022-10-11 华为技术有限公司 一种实现业务连续性的方法及装置
US20230262569A1 (en) * 2020-05-29 2023-08-17 Qualcomm Incorporated Sidelink relay mobility trigger event design
CN114095977A (zh) * 2020-06-29 2022-02-25 华为技术有限公司 一种通信方法及装置
CN113873586A (zh) * 2020-06-30 2021-12-31 华为技术有限公司 一种通信路径切换方法、装置及系统
CN113950029A (zh) * 2020-07-17 2022-01-18 华为技术有限公司 一种通信方法及装置
CN114158131A (zh) * 2020-09-04 2022-03-08 展讯通信（上海）有限公司 接入网络的方法及用户设备、计算机可读存储介质
EP4231767A4 (fr) * 2020-10-15 2024-04-17 Lg Electronics Inc Procédé et dispositif pour la mobilité dans un système de communication sans fil
US20230389110A1 (en) * 2020-10-22 2023-11-30 Telefonaktiebolaget Lm Ericsson (Publ) Terminal device, core network node, network device and method therein for facilitating paging procedure
US20240040637A1 (en) * 2020-12-07 2024-02-01 Beijing Xiaomi Mobile Software Co., Ltd. Connection establishment method and apparatus
CN114650537A (zh) * 2020-12-17 2022-06-21 维沃移动通信有限公司 授信中继通信方法、装置、终端及网络侧设备
KR20230128467A (ko) * 2021-01-05 2023-09-05 퀄컴 인코포레이티드 L2 릴레이 이동성을 위한 순방향 핸드오버 절차들
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WO2023212961A1 (fr) * 2022-05-06 2023-11-09 北京小米移动软件有限公司 Procédé et appareil de transfert intercellulaire
CN115552941A (zh) * 2022-05-16 2022-12-30 北京小米移动软件有限公司 中继通信方法、装置、通信设备及存储介质
WO2023245638A1 (fr) * 2022-06-24 2023-12-28 Lenovo (Beijing) Limited Procédés et appareils pour un établissement et un changement de chemin de relais dans un cas à chemins multiples
CN117412324A (zh) * 2022-07-08 2024-01-16 大唐移动通信设备有限公司 一种信息处理方法、装置及可读存储介质
CN117716734A (zh) * 2022-07-14 2024-03-15 北京小米移动软件有限公司 切换方法及装置
CN117793845A (zh) * 2022-09-16 2024-03-29 华为技术有限公司 通信方法和装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616507A (zh) * 2008-06-23 2009-12-30 上海华为技术有限公司 无线链路的配置方法、系统及相关设备
CN101651858A (zh) * 2008-08-15 2010-02-17 华为技术有限公司 下发消息的方法和系统、接收下发消息的方法和装置
CN102026317A (zh) * 2009-09-16 2011-04-20 华为技术有限公司 多载波高速下行分组接入技术的实现方法、装置及系统
CN102469439A (zh) * 2010-11-05 2012-05-23 中兴通讯股份有限公司 一种x2接口信息的指示和获取方法及系统
US20140302784A1 (en) * 2013-04-04 2014-10-09 Research In Motion Limited Method and apparatus for proximity discovery for device-to-device communication

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI454082B (zh) * 2009-06-29 2014-09-21 Htc Corp 處理行動裝置行動性的方法及其相關通訊裝置
CN102215537B (zh) * 2010-04-09 2014-06-04 华为技术有限公司 一种切换方法、基站和家庭网关
CN103533594B (zh) * 2013-10-24 2016-04-06 清华大学 基于用户移动状态感知的车载移动中继切换方法
KR102232787B1 (ko) * 2014-06-30 2021-03-26 삼성전자 주식회사 무선 통신 시스템에서 서비스 연속성을 제어하는 방법 및 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616507A (zh) * 2008-06-23 2009-12-30 上海华为技术有限公司 无线链路的配置方法、系统及相关设备
CN101651858A (zh) * 2008-08-15 2010-02-17 华为技术有限公司 下发消息的方法和系统、接收下发消息的方法和装置
CN102026317A (zh) * 2009-09-16 2011-04-20 华为技术有限公司 多载波高速下行分组接入技术的实现方法、装置及系统
CN102469439A (zh) * 2010-11-05 2012-05-23 中兴通讯股份有限公司 一种x2接口信息的指示和获取方法及系统
US20140302784A1 (en) * 2013-04-04 2014-10-09 Research In Motion Limited Method and apparatus for proximity discovery for device-to-device communication

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3913974A4 (fr) * 2019-02-15 2022-06-08 Huawei Technologies Co., Ltd. Procédé et appareil de communication à relais
EP4007363A4 (fr) * 2019-07-31 2022-09-14 Vivo Mobile Communication Co., Ltd. Procédé de commutation de réseau, dispositif de réseau et terminal
CN113491162A (zh) * 2019-08-16 2021-10-08 Oppo广东移动通信有限公司 通信方法和通信装置
WO2021159823A1 (fr) * 2020-02-13 2021-08-19 中兴通讯股份有限公司 Procédé et appareil de commutation de liaison, procédé et appareil de configuration de commutation de liaison, nœud de communication, et support
EP4080938A4 (fr) * 2020-03-25 2023-06-14 Vivo Mobile Communication Co., Ltd. Procédé et dispositif de commutation dans une architecture de relais de liaison latérale
CN111527770B (zh) * 2020-04-02 2024-01-16 北京小米移动软件有限公司 信息传输方法、装置、通信设备及存储介质
CN111527770A (zh) * 2020-04-02 2020-08-11 北京小米移动软件有限公司 信息传输方法、装置、通信设备及存储介质
EP4149128A4 (fr) * 2020-05-08 2023-11-01 Spreadtrum Communications (Shanghai) Co., Ltd. Ue distant et procédé de transmission de données associé, et ue relais et procédé de transmission de données associé
EP4228296A4 (fr) * 2020-10-10 2024-04-03 Datang mobile communications equipment co ltd Procédé de transfert, terminal, dispositif de réseau et relais
EP4247113A4 (fr) * 2020-12-09 2024-01-03 Huawei Tech Co Ltd Procédé, appareil et système de routage
US11553543B2 (en) * 2021-02-03 2023-01-10 Qualcomm Incorporated Link combining and component carrier selection across sidelink and access link interfaces
US20220248480A1 (en) * 2021-02-03 2022-08-04 Qualcomm Incorporated Link combining and component carrier selection across sidelink and access link interfaces
WO2023150944A1 (fr) * 2022-02-09 2023-08-17 Oppo广东移动通信有限公司 Procédé de commutation, dispositif terminal et dispositif de réseau
WO2023212484A1 (fr) * 2022-04-28 2023-11-02 Qualcomm Incorporated Coordination de réseau durant une commutation de trajet, et scénarios à trajets multiples

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