WO2020082326A1 - 一种数据转发方法及装置、网络设备 - Google Patents

一种数据转发方法及装置、网络设备 Download PDF

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Publication number
WO2020082326A1
WO2020082326A1 PCT/CN2018/112061 CN2018112061W WO2020082326A1 WO 2020082326 A1 WO2020082326 A1 WO 2020082326A1 CN 2018112061 W CN2018112061 W CN 2018112061W WO 2020082326 A1 WO2020082326 A1 WO 2020082326A1
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Prior art keywords
base station
node
data
target
source
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PCT/CN2018/112061
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English (en)
French (fr)
Inventor
尤心
卢前溪
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201880092426.0A priority Critical patent/CN111989951B/zh
Priority to PCT/CN2018/112061 priority patent/WO2020082326A1/zh
Publication of WO2020082326A1 publication Critical patent/WO2020082326A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • the embodiments of the present application relate to the technical field of mobile communications, and in particular to a data forwarding method and device, and network equipment.
  • Mobility enhancement for reducing the switching delay mainly includes two methods, one is based on dual connectivity (DC, Dual Connectivity) switching, and the other is based on enhanced mobile broadband (eMBB, Enhance Mobile Broadband) switching.
  • DC-based handover is mainly by adding the target base station as a secondary node (SN, Secondary), and then changing the SN to the master node (MN, Master) by role change, so as to achieve the effect of handover .
  • the handover based on eMBB refers to the connection with the source base station while connecting with the target base station, so as to achieve an uninterrupted handover.
  • the source base station disconnects from the terminal, and forwards the data that has not received the acknowledgement feedback (ACK) to the target base station, and the target base station performs downlink transmission to the terminal.
  • ACK acknowledgement feedback
  • Embodiments of the present application provide a data forwarding method and device, and network equipment.
  • the first base station forwards data to the second base station, where the data is data to be sent to the terminal.
  • the data forwarding device provided by the embodiment of the present application is applied to the first base station, and the device includes:
  • the forwarding unit is configured to forward data to the second base station when the terminal switches from the first base station to the second base station, where the data is data to be sent to the terminal.
  • the network device provided by the embodiment of the present application includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the data forwarding method described above.
  • the chip provided in the embodiment of the present application is used to implement the foregoing data forwarding method.
  • the chip includes a processor for calling and running a computer program from the memory, so that the device installed with the chip executes the data forwarding method described above.
  • the computer-readable storage medium provided by the embodiments of the present application is used to store a computer program, and the computer program enables the computer to execute the foregoing data forwarding method.
  • the computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions cause the computer to execute the foregoing data forwarding method.
  • the computer program provided by the embodiment of the present application when it runs on a computer, causes the computer to execute the above data forwarding method.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart 1 of a data forwarding method provided by an embodiment of the present application.
  • FIG. 3 is a second schematic flowchart of a data forwarding method provided by an embodiment of this application.
  • Figure 4 (a) is a diagram of the protocol architecture before the role change during the handover process
  • Figure 4 (b) is the protocol architecture diagram after the role switching in the handover process
  • FIG. 5 is a schematic structural diagram of a data forwarding device provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • GSM Global System of Mobile
  • CDMA Code Division Multiple Access
  • WCDMA Broadband Code Division Multiple Access
  • GSM Global System of Mobile
  • CDMA Code Division Multiple Access
  • WCDMA Broadband Code Division Multiple Access
  • GSM Global System of Mobile
  • CDMA Code Division Multiple Access
  • WCDMA Broadband Code Division Multiple Access
  • GSM Global System of Mobile
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Communication System
  • WiMAX Global Interoperability for Microwave Access
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal).
  • the network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminals located within the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in the cloud radio access network (Cloud Radio Access Network, CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or network devices in future public land mobile networks (Public Land Mobile Network, PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B, eNB or eNodeB
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, an in-veh
  • the communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110.
  • terminals include, but are not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Lines (DSL), digital cables, and direct cable connections; And / or another data connection / network; and / or via a wireless interface, eg, for cellular networks, wireless local area networks (Wireless Local Area Network, WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter; and / or another terminal device configured to receive / transmit communication signals; and / or Internet of Things (IoT) equipment.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Lines
  • WLAN wireless local area networks
  • TV networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter
  • IoT Internet of Things
  • a terminal configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", “wireless terminal”, or “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communication Systems (PCS) terminals that can combine cellular radiotelephones with data processing, fax, and data communication capabilities; can include radiotelephones, pagers, Internet / internal PDA with networked access, web browser, notepad, calendar, and / or Global Positioning System (GPS) receiver; and conventional laptop and / or palm-type receivers or others including radiotelephone transceivers Electronic device.
  • PCS Personal Communication Systems
  • GPS Global Positioning System
  • terminal 120 may perform terminal direct connection (Device to Device, D2D) communication.
  • D2D Terminal Direct connection
  • the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminals.
  • the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within the coverage area. Embodiments of the present application There is no restriction on this.
  • the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.
  • network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.
  • the devices with communication functions in the network / system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal 120 having a communication function, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; communication
  • the device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in the embodiments of the present application.
  • FIG. 2 is a first schematic flowchart of a data forwarding method according to an embodiment of the present application. As shown in FIG. 2, the data forwarding method includes the following steps:
  • Step 201 When the terminal switches from the first base station to the second base station, the first base station forwards data to the second base station, where the data is data to be sent to the terminal.
  • the terminal may be any device that can communicate with a network, such as a mobile phone, a tablet computer, a notebook, or a vehicle-mounted terminal.
  • the first base station refers to the source base station in the handover process
  • the second base station refers to the target base station in the handover process.
  • the types of the first base station and the second base station may be the same or different.
  • the first base station is an LTE base station (ie eNB)
  • the second base station is an NR base station (ie gNB).
  • both the first base station and the second base station are LTE base stations (ie, eNB) or both are NR base stations (ie, gNB).
  • the first base station when the terminal switches from the first base station to the second base station, the first base station forwards data to the second base station, where the data is data to be sent to the terminal.
  • the source-side base station includes a source master node and a source auxiliary node
  • the target-side base station includes a target master node and a target auxiliary node
  • the first base station forwarding data to the second base station may be implemented in the following manner:
  • Manner 1 The source master node forwards data to the target master node and / or the target auxiliary node. Referring to FIG. 3, in step 313 in FIG. 3, the source MN forwards data to the target MN. Of course, the source MN can also forward data to the target SN.
  • the source master node forwards data to the target master node: the source master node can directly forward data to the target master node.
  • the source master node forwards data to the target secondary node: 1) the source master node directly forwards data to the target secondary node; or, 2) the source master node forwards data to the target master node, through all The target master node forwards data to the target auxiliary node.
  • Manner 2 The source secondary node forwards data to the target primary node and / or the target secondary node. Referring to FIG. 3, in step 314 in FIG. 3, the source SN forwards data to the target SN. Of course, the source SN can also forward data to the target MN.
  • the source secondary node forwards data to the target secondary node: 1) the source secondary node directly forwards data to the target secondary node; or, 2) the source secondary node forwards data to the target primary node, through all The target master node forwards data to the target auxiliary node.
  • the source secondary node forwards data to the target primary node: 1) the source secondary node directly forwards data to the target primary node; or, 2) the source secondary node forwards data to the target secondary node, through all The target secondary node forwards data to the target master node.
  • the first base station sends a handover request message to the second base station, and the second base station sends a handover request confirmation message (HO request Ack) to the first base station.
  • the first base station forwards data to the second base station.
  • the source secondary node receives the secondary node release request message sent by the source primary node (refer to step 307 in FIG. 3)
  • the first base station forwards data to the second base station.
  • the data forwarded by the first base station to the second base station is data not sent by the first base station to the terminal and / or sent by the first base station to the terminal Data that was not received correctly by the terminal. Further, the first base station sends a sequence number status transfer message to the second base station, where the sequence number status transfer message is used to transmit the uplink packet data convergence protocol (PDCP, Packet, Data, Convergence, Protocol) sequence number receiver status.
  • PDCP packet data convergence protocol
  • Packet Packet
  • Data Convergence, Protocol
  • the data is carried on the primary cell group non-split bearer (MCG non-split bearer), or the primary cell sub-stream bearer (MCG split spearer), or the secondary cell group non-split bearer (SCG nonsplit bearer) ), Or on the secondary cell group stream bearer (SCG split bearer).
  • MCG non-split bearer primary cell group non-split bearer
  • MCG split spearer primary cell sub-stream bearer
  • SCG nonsplit bearer secondary cell group non-split bearer
  • SCG split bearer secondary cell group stream bearer
  • FIGS. 4 (a) and 4 (b) show the two protocol architecture diagrams when implementing switching based on DC, where FIG. 4 (a) is during the switching process
  • Figure 4 (b) is the protocol architecture diagram after the role conversion during the handover process.
  • role conversion refers to the role conversion between the source base station as the MN and the target base station as the SN.
  • the source base station is MN
  • the target base station is SN
  • RLC Radio Link Control
  • the bearer between the PDCP entity on the source base station side and the RLC entity on the target base station side is a split bearer.
  • the source base station is SN
  • the target base station is MN
  • the bearer between the PDCP entity on the target base station side and the RLC entity on the target base station side is non-split bearer
  • the PDCP entity on the target base station side is split bearer.
  • FIG. 3 is a second schematic flowchart of a data forwarding method provided by an embodiment of the present application.
  • the source master node (source MN) is SeNB1
  • the source secondary node (source SN) is SeNB2
  • the target master node (target MN) It is TeNB1
  • the target secondary node (target SN) is TeNB2.
  • the base station in FIG. 3 uses the LTE base station as an example for description, and is not limited to this.
  • the NR base station is also applicable to the technical solutions of the embodiments of the present application
  • the data forwarding method includes the following steps:
  • Step 301 The source MN sends a secondary node addition request message to the source SN.
  • Step 302 The source SN sends a secondary node addition request confirmation feedback message to the source MN.
  • Step 303 The source MN sends a handover request message to the target MN.
  • Step 304 The target MN sends a secondary node addition request message to the target SN.
  • Step 305 The target SN sends a secondary node addition request confirmation feedback message to the target MN.
  • Step 306 The target MN sends a handover request confirmation message to the source MN.
  • Step 307 The source MN sends a secondary node release request message to the source SN.
  • Step 308 The source MN sends an RRC reconfiguration message to the UE.
  • Step 309 A random access procedure is performed between the UE and the target MN.
  • Step 310 The UE sends an RRC reconfiguration complete message to the target MN.
  • Step 311 Perform a random access procedure between the UE and the target SN.
  • Step 312 The target MN sends a secondary node reconfiguration complete message to the target SN.
  • Step 313 The service network manager (S-GW) forwards the data to the source MN, and the source MN forwards the data to the target MN.
  • S-GW service network manager
  • Step 314 The source SN forwards the data to the target SN.
  • Step 315 The target MN sends a path change request message to the mobility management entity (MME).
  • MME mobility management entity
  • Step 316 Bearer modification is performed between the S-GW and the MME.
  • Step 317a The S-GW allocates a new path to the target MN.
  • Step 317b The S-GW allocates a new path to the target SN.
  • Step 318 The MME sends a path change request confirmation message to the target MN.
  • Step 319 The target MN notifies the source MN to release the UE context.
  • Step 320 The source MN notifies the source SN to release the UE context.
  • Step 321 The target MN sends a secondary node release request message to the target SN.
  • Step 322 The target SN sends a secondary node release request confirmation feedback message to the target MN.
  • step 313 and step 314 in the above process are data forwarding steps.
  • FIG. 5 is a schematic structural composition diagram of a data forwarding device provided by an embodiment of the present application, and is applied to a first base station. As shown in FIG. 5, the device includes:
  • the forwarding unit 501 is configured to forward data to the second base station when the terminal switches from the first base station to the second base station, where the data is data to be sent to the terminal.
  • the device further includes:
  • the receiving unit 502 is configured to receive a handover request confirmation message from the second base station;
  • the forwarding unit 501 is configured to forward data to the second base station after the receiving unit receives the handover request confirmation message from the second base station.
  • the source-side base station includes a source master node and a source secondary node
  • the target-side base station includes a target master node and a target secondary node
  • the first base station is the source master node
  • the forwarding unit 501 is configured to forward data to the target primary node and / or the target secondary node.
  • the forwarding unit 501 is configured to forward data directly to the target secondary node; or, forward data to the target primary node, and forward data to the target secondary node through the target primary node.
  • the first base station is a source secondary node
  • the forwarding unit 501 is configured to forward data to the target primary node and / or the target secondary node.
  • the forwarding unit 501 is configured to forward data directly to the target secondary node; or, forward data to the target primary node, and forward data to the target secondary node through the target primary node.
  • the forwarding unit 501 is configured to forward data directly to the target master node; or, forward data to the target secondary node, and forward data to the target master node through the target secondary node.
  • the forwarding unit 501 forwards the data to the second base station.
  • the forwarding unit 501 is configured to forward data that is not sent to the terminal and / or data that is not correctly received by the terminal to the second base station.
  • the forwarding unit 501 is further configured to send a serial number status transfer message to the second base station, and the serial number status transfer message is used to transmit an uplink PDCP serial number receiver status.
  • the data is carried on the primary cell group non-offload bearer, or the primary cell component flow bearer, or the secondary cell group non-offload bearer, or the secondary cell component flow bearer.
  • FIG. 6 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application.
  • the communication device may be a network device, such as a base station.
  • the communication device 600 shown in FIG. 6 includes a processor 610.
  • the processor 610 may call and run a computer program from a memory to implement the method in the embodiments of the present application.
  • the communication device 600 may further include a memory 620.
  • the processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiments of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of antennas may be one or more.
  • the communication device 600 may specifically be a network device according to an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. .
  • the communication device 600 may specifically be the mobile terminal / terminal of the embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the mobile terminal / terminal in each method of the embodiment of the present application. This will not be repeated here.
  • FIG. 7 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720.
  • the processor 710 can call and run a computer program from the memory 720 to implement the method in the embodiments of the present application.
  • the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.
  • the chip 700 may further include an input interface 730.
  • the processor 710 can control the input interface 730 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.
  • the chip 700 may further include an output interface 740.
  • the processor 710 can control the output interface 740 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal / terminal in the embodiments of the present application, and the chip can implement the corresponding process implemented by the mobile terminal / terminal in each method of the embodiments of the present application. Repeat.
  • chips mentioned in the embodiments of the present application may also be referred to as system-level chips, system chips, chip systems, or system-on-chip chips.
  • FIG. 8 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in FIG. 8, the communication system 900 includes a terminal 910 and a network device 920.
  • the terminal 910 may be used to implement the corresponding functions implemented by the terminal in the above method
  • the network device 920 may be used to implement the corresponding functions implemented by the network device in the above method.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an existing programmable gate array (Field Programmable Gate Array, FPGA), or other available Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, and a register.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronic Erasable programmable read only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDRSDRAM
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data) SDRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on.
  • static random access memory static random access memory
  • SRAM dynamic random access memory
  • DRAM Synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • double data SDRAM double data rate synchronous dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • synchronous connection Dynamic random access memory switchlink DRAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiments of the present application. No longer.
  • the computer-readable storage medium may be applied to the mobile terminal / terminal in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal in each method of the embodiments of the present application, in order to It is concise and will not be repeated here.
  • An embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. Repeat again.
  • the computer program product can be applied to the mobile terminal / terminal in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal / terminal in each method of the embodiments of the present application, for simplicity And will not be repeated here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiments of the present application.
  • the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. And will not be repeated here.
  • the computer program can be applied to the mobile terminal / terminal in the embodiments of the present application, and when the computer program runs on the computer, the computer is allowed to execute the corresponding implementation of the mobile terminal / terminal in each method of the embodiments of the present application For the sake of brevity, I will not repeat them here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

本申请实施例提供一种数据转发方法及装置、网络设备，包括：当终端从第一基站向第二基站切换时，所述第一基站向所述第二基站转发数据，其中，所述数据为待发送给所述终端的数据。

Description

一种数据转发方法及装置、网络设备 技术领域
本申请实施例涉及移动通信技术领域，具体涉及一种数据转发方法及装置、网络设备。
背景技术
针对缩小切换时延的移动性增强主要包含两种方法，一种是基于双连接(DC，Dual Connectivity)的切换，另一种是基于增强移动宽带(eMBB，Enhance Mobile Broadband)的切换。其中，基于DC的切换主要是通过添加目标基站为辅节点(SN，Secondary Node)，然后再通过角色改变(role change)来把SN变为主节点(MN，Master Node)，从而达到切换的效果。基于eMBB的切换是指在与目标基站连接的同时与源基站保持连接，从而达到无中断的切换。
在普通的切换流程中，当终端收到切换命令后，源基站就和终端断开连接，并且将未收到确认反馈(ACK)的数据转发给目标基站，由目标基站进行下行传输给终端。而对于基于DC的切换，数据如何由源侧基站转发给目标侧基站是需要解决的问题。
发明内容
本申请实施例提供一种数据转发方法及装置、网络设备。
本申请实施例提供的数据转发方法，包括：
当终端从第一基站向第二基站切换时，所述第一基站向所述第二基站转发数据，其中，所述数据为待发送给所述终端的数据。
本申请实施例提供的数据转发装置，应用于第一基站，所述装置包括：
转发单元，用于当终端从第一基站向第二基站切换时，向所述第二基站转发数据，其中，所述数据为待发送给所述终端的数据。
本申请实施例提供的网络设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述的数据转发方法。
本申请实施例提供的芯片，用于实现上述的数据转发方法。
具体地，该芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该芯片的设备执行上述的数据转发方法。
本申请实施例提供的计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述的数据转发方法。
本申请实施例提供的计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行上述的数据转发方法。
本申请实施例提供的计算机程序，当其在计算机上运行时，使得计算机执行上述的数据转发方法。
通过上述技术方案，在基于DC的切换过程中，明确了基站之间如何进行数据转发，实现了原侧基站向目标侧基站转发未向所述终端发送的数据和/或未被所述终端正确收到的数据。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是本申请实施例提供的一种通信系统架构的示意性图；
图2为本申请实施例提供的数据转发方法的流程示意图一；
图3为本申请实施例提供的数据转发方法的流程示意图二；
图4(a)是切换过程中角色转换之前的协议架构图；
图4(b)是切换过程中角色转换之后的协议架构图；
图5为本申请实施例提供的数据转发装置的结构组成示意图；
图6是本申请实施例提供的一种通信设备示意性结构图；
图7是本申请实施例的芯片的示意性结构图；
图8是本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本 申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统或5G系统等。
示例性的，本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110，网络设备110可以是与终端120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端进行通信。可选地，该网络设备110可以是GSM系统或CDMA系统中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器，或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端120。作为在此使用的“终端”包括但不限于经由有线线路连接，如经由公共交换电话网络(Public Switched Telephone Networks，PSTN)、数字用户线路(Digital Subscriber Line，DSL)、数字电缆、直接电缆连接；和/或另一数据连接/网络；和/或经由无线接口，如，针对蜂窝网络、无线局域网(Wireless Local Area Network，WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器；和/或另一终端的被设置成接收/发送通信信号的装置；和/或物联网(Internet of Things，IoT)设备。被设置成通过无线接口通信的终端可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话；可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System，PCS)终端；可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global  Positioning System，GPS)接收器的PDA；以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端可以指接入终端、用户设备(User Equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端或者未来演进的PLMN中的终端等。
可选地，终端120之间可以进行终端直连(Device to Device，D2D)通信。
可选地，5G系统或5G网络还可以称为新无线(New Radio，NR)系统或NR网络。
图1示例性地示出了一个网络设备和两个终端，可选地，该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端，本申请实施例对此不做限定。
可选地，该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例对此不作限定。
应理解，本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统100为例，通信设备可包括具有通信功能的网络设备110和终端120，网络设备110和终端120可以为上文所述的具体设备，此处不再赘述；通信设备还可包括通信系统100中的其他设备，例如网络控制器、移动管理实体等其他网络实体，本申请实施例中对此不做限定。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
图2为本申请实施例提供的数据转发方法的流程示意图一，如图2所示，所述数据转发方法包括以下步骤：
步骤201：当终端从第一基站向第二基站切换时，所述第一基站向所述第二基站转发数据，其中，所述数据为待发送给所述终端的数据。
本申请实施例中，所述终端可以是手机、平板电脑、笔记本、车载终端等任意能够与网络进行通信的设备。
本申请实施例中，第一基站是指切换过程的源基站，第二基站是指切换过程的目标基站。第一基站和第二基站的类型可以相同，也可以不同。例如：第一基站是LTE基站(即eNB)，第二基站是NR基站(即gNB)。再例如：第一基站和第二基站都是LTE基站(即eNB)或者都是NR基站(即gNB)。
本申请实施例中，当终端从第一基站向第二基站切换时，所述第一基站向所述第二基站转发数据，其中，所述数据为待发送给所述终端的数据。
本申请实施例中，基于DC架构，源侧基站包括源主节点和源辅节点，目标侧基站包括目标主节点和目标辅节点。
基于此，所述第一基站向所述第二基站转发数据，可以通过以下方式实现：
方式一：所述源主节点向所述目标主节点和/或所述目标辅节点转发数据。参照图3，图3中的步骤313中，源MN向目标MN转发数据。当然，源MN也可以向目标SN转发数据。
对于源主节点向目标主节点转发数据的情况：源主节点可以直接向目标主节点转发数据。
对于源主节点向目标辅节点转发数据的情况：1)所述源主节点直接向所述目标辅节点转发数据；或者，2)所述源主节点向所述目标主节点转发数据，通过所述目标主节点向所述目标辅节点转发数据。
方式二：所述源辅节点向所述目标主节点和/或所述目标辅节点转发数据。参照图3，图3中的步骤314中，源SN向目标SN转发数据。当然，源SN也可以向目标MN转发数据。
对于源辅节点向目标辅节点转发数据的情况：1)所述源辅节点直接向所述目标辅节点转发数据；或者，2)所述源辅节点向所述目标主节点转发数据，通过所述目标主节点向所述目标辅节点转发数据。
对于源辅节点向目标主节点转发数据的情况：1)所述源辅节点直接向所述目标主节点转发数据；或者，2)所述源辅节点向所述目标辅节点转发数据，通过所述目标辅节点向所述目标主节点转发数据。
本申请实施例中，终端从第一基站向第二基站切换的过程中，第一基站向第二基站发送切换请求消息，第二基站向第一基站发送切换请求确认消息(HO request Ack)。所述第一基站在收到所述第二基站的切换请求确认消息后(参照图3中的步骤306)，向所述第二基站转发数据。进一步，所述源辅节点收到所述源主节点发送的辅节点释 放请求消息后(参照图3中的步骤307)，所述第一基站向所述第二基站转发数据。
本申请实施例的上述方案中，所述第一基站向所述第二基站转发的数据是所述第一基站未向所述终端发送的数据和/或所述第一基站向所述终端发送但未被所述终端正确收到的数据。进一步，所述第一基站向所述第二基站发送序列号状态转移消息，所述序列号状态转移消息用于传输上行分组数据汇聚协议(PDCP，Packet Data Convergence Protocol)序列号接收机状态。
本申请实施例中，所述数据承载在主小区组非分流承载(MCG non split bearer)上、或者主小区组分流承载(MCG split bearer)上、或者辅小区组非分流承载(SCG non split bearer)上、或者辅小区组分流承载(SCG split bearer)上。
参照图4(a)和图4(b)，图4(a)和图4(b)给出了基于DC实现切换时的两种协议架构图，其中，图4(a)是切换过程中角色转换之前的协议架构图，图4(b)是切换过程中角色转换之后的协议架构图，这里，角色转换是指源基站作为MN，目标基站作为SN之间的角色转换。参照图4(a)，在角色转换之前，源基站为MN，目标基站为SN，源基站侧的PDCP实体与源基站侧的无线链路层控制(RLC，Radio Link Control)实体之间的承载为非分流承载(non split bearer)，源基站侧的PDCP实体与目标基站侧的RLC实体之间的承载为分流承载(split bearer)。参照图4(b)，在角色转换之后，源基站为SN，目标基站为MN，目标基站侧的PDCP实体与目标基站侧的RLC实体之间的承载为non split bearer，目标基站侧的PDCP实体与源基站侧的RLC实体之间的承载为split bearer。
图3为本申请实施例提供的数据转发方法的流程示意图二，如图3所示，源主节点(源MN)为SeNB1，源辅节点(源SN)为SeNB2，目标主节点(目标MN)为TeNB1，目标辅节点(目标SN)为TeNB2，需要说明的是，图3中的基站是以LTE基站为例进行说明，不局限于此，NR基站也同样适用于本申请实施例的技术方案，所述数据转发方法包括以下步骤：
步骤301：源MN向源SN发送辅节点添加请求消息。
步骤302：源SN向源MN发送辅节点添加请求确认反馈消息。
步骤303：源MN向目标MN发送切换请求消息。
步骤304：目标MN向目标SN发送辅节点添加请求消息。
步骤305：目标SN向目标MN发送辅节点添加请求确认反馈消息。
步骤306：目标MN向源MN发送切换请求确认消息。
步骤307：源MN向源SN发送辅节点释放请求消息。
步骤308：源MN向UE发送RRC重配置消息。
步骤309：UE与目标MN之间执行随机接入流程。
步骤310：UE向目标MN发送RRC重配置完成消息。
步骤311：UE与目标SN之间执行随机接入流程。
步骤312：目标MN向目标SN发送辅节点重配置完成消息。
步骤313：服务网管(S-GW)向源MN进行数据转发，源MN向目标MN进行数据转发。
步骤314：源SN向目标SN进行数据转发。
步骤315：目标MN向移动管理实体(MME)发送路径变更请求消息。
步骤316：S-GW与MME之间进行承载修改。
步骤317a：S-GW分配新路径给目标MN。
步骤317b：S-GW分配新路径给目标SN。
步骤318：MME向目标MN发送路径变更请求确认消息。
步骤319：目标MN通知源MN进行UE上下文释放。
步骤320：源MN通知源SN进行UE上下文释放。
步骤321：目标MN向目标SN发送辅节点释放请求消息。
步骤322：目标SN向目标MN发送辅节点释放请求确认反馈消息。
需要说明的是，上述流程中的步骤313和步骤314为数据转发步骤。
图5为本申请实施例提供的数据转发装置的结构组成示意图，应用于第一基站，如图5所示，所述装置包括：
转发单元501，用于当终端从第一基站向第二基站切换时，向所述第二基站转发数据，其中，所述数据为待发送给所述终端的数据。
在一实施方式中，所述装置还包括：
接收单元502，用于接收所述第二基站的切换请求确认消息；
所述转发单元501，用于在所述接收单元收到所述第二基站的切换请求确认消息后，向所述第二基站转发数据。
在一实施方式中，在双连接架构中，源侧基站包括源主节点和源辅节点，目标侧基站包括目标主节点和目标辅节点。
在一实施方式中，所述第一基站为源主节点；
所述转发单元501，用于向所述目标主节点和/或所述目标辅节点转发数据。
在一实施方式中，所述转发单元501，用于直接向所述目标辅节点转发数据；或者，向所述目标主节点转发数据，通过所述目标主节点向所述目标辅节点转发数据。
在一实施方式中，所述第一基站为源辅节点；
所述转发单元501，用于向所述目标主节点和/或所述目标辅节点转发数据。
在一实施方式中，所述转发单元501，用于直接向所述目标辅节点转发数据；或者，向所述目标主节点转发数据，通过所述目标主节点向所述目标辅节点转发数据。
在一实施方式中，所述转发单元501，用于直接向所述目标主节点转发数据；或者，向所述目标辅节点转发数据，通过所述目标辅节点向所述目标主节点转发数据。
在一实施方式中，所述源辅节点收到所述源主节点发送的辅节点释放请求消息后，所述转发单元501向所述第二基站转发数据。
在一实施方式中，所述转发单元501，用于向所述第二基站转发未向所述终端发送的数据和/或未被所述终端正确收到的数据。
在一实施方式中，所述转发单元501，还用于向所述第二基站发送序列号状态转移消息，所述序列号状态转移消息用于传输上行PDCP序列号接收机状态。
在一实施方式中，所述数据承载在主小区组非分流承载上、或者主小区组分流承载上、或者辅小区组非分流承载上、或者辅小区组分流承载上。
本领域技术人员应当理解，本申请实施例的上述数据转发装置的相关描述可以参照本申请实施例的数据转发方法的相关描述进行理解。
图6是本申请实施例提供的一种通信设备600示意性结构图。该通信设备可以是网络设备，例如基站，图6所示的通信设备600包括处理器610，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图6所示，通信设备600还可以包括存储器620。其中，处理器610可以从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。
可选地，如图6所示，通信设备600还可以包括收发器630，处理器610可以控制该收发器630与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线， 天线的数量可以为一个或多个。
可选地，该通信设备600具体可为本申请实施例的网络设备，并且该通信设备600可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备600具体可为本申请实施例的移动终端/终端，并且该通信设备600可以实现本申请实施例的各个方法中由移动终端/终端实现的相应流程，为了简洁，在此不再赘述。
图7是本申请实施例的芯片的示意性结构图。图7所示的芯片700包括处理器710，处理器710可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图7所示，芯片700还可以包括存储器720。其中，处理器710可以从存储器720中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器720可以是独立于处理器710的一个单独的器件，也可以集成在处理器710中。
可选地，该芯片700还可以包括输入接口730。其中，处理器710可以控制该输入接口730与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片700还可以包括输出接口740。其中，处理器710可以控制该输出接口740与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的网络设备，并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该芯片可应用于本申请实施例中的移动终端/终端，并且该芯片可以实现本申请实施例的各个方法中由移动终端/终端实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
图8是本申请实施例提供的一种通信系统900的示意性框图。如图8所示，该通信系统900包括终端910和网络设备920。
其中，该终端910可以用于实现上述方法中由终端实现的相应的功能，以及该网络设备920可以用于实现上述方法中由网络设备实现的相应的功能为了简洁，在此不再赘述。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。 在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus  RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选的，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的移动终端/终端，并且该计算机程序使得计算机执行本申请实施例的各个方法中由移动终端/终端实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选的，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序产品可应用于本申请实施例中的移动终端/终端，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由移动终端/终端实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序可应用于本申请实施例中的移动终端/终端，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由移动终端/终端实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，)ROM、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (29)

  1. 一种数据转发方法，所述方法包括：
    当终端从第一基站向第二基站切换时，所述第一基站向所述第二基站转发数据，其中，所述数据为待发送给所述终端的数据。
  2. 根据权利要求1所述的方法，其中，所述第一基站在收到所述第二基站的切换请求确认消息后，向所述第二基站转发数据。
  3. 根据权利要求1或2所述的方法，其中，在双连接架构中，源侧基站包括源主节点和源辅节点，目标侧基站包括目标主节点和目标辅节点。
  4. 根据权利要求3所述的方法，其中，所述第一基站向所述第二基站转发数据，包括：
    所述源主节点向所述目标主节点和/或所述目标辅节点转发数据。
  5. 根据权利要求4所述的方法，其中，所述源主节点向所述目标辅节点转发数据，包括：
    所述源主节点直接向所述目标辅节点转发数据；或者，
    所述源主节点向所述目标主节点转发数据，通过所述目标主节点向所述目标辅节点转发数据。
  6. 根据权利要求3所述的方法，其中，所述第一基站向所述第二基站转发数据，包括：
    所述源辅节点向所述目标主节点和/或所述目标辅节点转发数据。
  7. 根据权利要求6所述的方法，其中，所述源辅节点向所述目标辅节点转发数据，包括：
    所述源辅节点直接向所述目标辅节点转发数据；或者，
    所述源辅节点向所述目标主节点转发数据，通过所述目标主节点向所述目标辅节点转发数据。
  8. 根据权利要求6所述的方法，其中，所述源辅节点向所述目标主节点转发数据，包括：
    所述源辅节点直接向所述目标主节点转发数据；或者，
    所述源辅节点向所述目标辅节点转发数据，通过所述目标辅节点向所述目标主节点转发数据。
  9. 根据权利要求3至8任一项所述的方法，其中，所述源辅节点收到所述源主节点发送的辅节点释放请求消息后，所述第一基站向所述第二基站转发数据。
  10. 根据权利要求1至9任一项所述的方法，其中，所述第一基站向所述第二基站转发数据，包括：
    所述第一基站向所述第二基站转发未向所述终端发送的数据和/或未被所述终端正确收到的数据。
  11. 根据权利要求1至10任一项所述的方法，其中，所述方法还包括：
    所述第一基站向所述第二基站发送序列号状态转移消息，所述序列号状态转移消息用于传输上行分组数据汇聚协议PDCP序列号接收机状态。
  12. 根据权利要求1至11任一项所述的方法，其中，所述数据承载在主小区组非分流承载上、或者主小区组分流承载上、或者辅小区组非分流承载上、或者辅小区组分流承载上。
  13. 一种数据转发装置，应用于第一基站，所述装置包括：
    转发单元，用于当终端从第一基站向第二基站切换时，向所述第二基站转发数据，其中，所述数据为待发送给所述终端的数据。
  14. 根据权利要求13所述的装置，其中，所述装置还包括：
    接收单元，用于接收所述第二基站的切换请求确认消息；
    所述转发单元，用于在所述接收单元收到所述第二基站的切换请求确认消息后，向所述第二基站转发数据。
  15. 根据权利要求13或14所述的装置，其中，在双连接架构中，源侧基站包括源主节点和源辅节点，目标侧基站包括目标主节点和目标辅节点。
  16. 根据权利要求15所述的装置，其中，所述第一基站为源主节点；
    所述转发单元，用于向所述目标主节点和/或所述目标辅节点转发数据。
  17. 根据权利要求16所述的装置，其中，所述转发单元，用于直接向所述目标辅节点转发数据；或者，向所述目标主节点转发数据，通过所述目标主节点向所述目标辅节点转发数据。
  18. 根据权利要求15所述的装置，其中，所述第一基站为源辅节点；
    所述转发单元，用于向所述目标主节点和/或所述目标辅节点转发数据。
  19. 根据权利要求18所述的装置，其中，所述转发单元，用于直接向所述目标辅节点转发数据；或者，向所述目标主节点转发数据，通过所述目标主节点向所述目 标辅节点转发数据。
  20. 根据权利要求18所述的装置，其中，所述转发单元，用于直接向所述目标主节点转发数据；或者，向所述目标辅节点转发数据，通过所述目标辅节点向所述目标主节点转发数据。
  21. 根据权利要求15至20任一项所述的装置，其中，所述源辅节点收到所述源主节点发送的辅节点释放请求消息后，所述转发单元向所述第二基站转发数据。
  22. 根据权利要求13至21任一项所述的装置，其中，所述转发单元，用于向所述第二基站转发未向所述终端发送的数据和/或未被所述终端正确收到的数据。
  23. 根据权利要求13至22任一项所述的装置，其中，所述转发单元，还用于向所述第二基站发送序列号状态转移消息，所述序列号状态转移消息用于传输上行PDCP序列号接收机状态。
  24. 根据权利要求13至23任一项所述的装置，其中，所述数据承载在主小区组非分流承载上、或者主小区组分流承载上、或者辅小区组非分流承载上、或者辅小区组分流承载上。
  25. 一种网络设备，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至12中任一项所述的方法。
  26. 一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至12中任一项所述的方法。
  27. 一种计算机可读存储介质，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至12中任一项所述的方法。
  28. 一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至12中任一项所述的方法。
  29. 一种计算机程序，所述计算机程序使得计算机执行如权利要求1至12中任一项所述的方法。
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105992292A (zh) * 2015-02-13 2016-10-05 中兴通讯股份有限公司 异构网中的基站切换方法与基站
WO2018142308A1 (en) * 2017-02-03 2018-08-09 Telefonaktiebolaget Lm Ericsson (Publ) Handover with zero ms user plane interruption

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150041573A (ko) * 2013-10-04 2015-04-16 (주)휴맥스 홀딩스 Lte 복수 기지국 연결 시 핸드오버 메세지 송수신 방법
KR102170402B1 (ko) * 2014-01-29 2020-10-27 삼성전자 주식회사 이중 연결을 지원하는 무선 통신 시스템에서 단말의 핸드 오버 수행 방법 및 장치
US10064115B2 (en) * 2014-03-28 2018-08-28 Nokia Solutions And Networks Oy Method and apparatus for handover in dual connectivity user equipment and base station
WO2016119109A1 (zh) * 2015-01-26 2016-08-04 华为技术有限公司 一种切换装置及方法
WO2016190357A1 (ja) * 2015-05-28 2016-12-01 京セラ株式会社 通信制御方法、基地局、及びユーザ端末
EP3393055A4 (en) * 2016-03-30 2019-08-07 Guangdong OPPO Mobile Telecommunications Corp., Ltd. RELAY TRANSMISSION METHOD AND DEVICE
CN108377567B (zh) * 2016-11-01 2021-02-23 北京三星通信技术研究有限公司 一种在5g架构下建立双连接传输数据的方法、装置和系统

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105992292A (zh) * 2015-02-13 2016-10-05 中兴通讯股份有限公司 异构网中的基站切换方法与基站
WO2018142308A1 (en) * 2017-02-03 2018-08-09 Telefonaktiebolaget Lm Ericsson (Publ) Handover with zero ms user plane interruption

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
CATT: "Consideration of Handover with SeNB Addition", 3GPP TSG RAN WG3#87 R3-150220, 8 February 2015 (2015-02-08), XP050936973 *
CMCC: "Handling of MeNB HO and SeNB Change for Dual Connectivity", 3GPP TSG-RAN WG2 MEETING #85 R2-140135, 9 February 2014 (2014-02-09), XP050737380 *
CMCC: "HO Signaling Flow for Small Cell Enhancement", 3GPP TSG-RAN WG3 MEETING #82 R3-132227, 12 November 2013 (2013-11-12), XP050738271 *
HUAWEI: "MeNB Mobility Procedure", 3GPP TSG-RAN WG3 MEETING #83 R3-140117, 9 February 2014 (2014-02-09), XP050738558 *
ZTE: "Signalling Flow Description for 3C", 3GPP TSG-RAN WG3 MEETING #82 R3-132205, 12 November 2013 (2013-11-12), XP050738264 *

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