WO2021097726A1 - 确定时间戳的方法、终端设备、接入网节点、核心网设备 - Google Patents

确定时间戳的方法、终端设备、接入网节点、核心网设备 Download PDF

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Publication number
WO2021097726A1
WO2021097726A1 PCT/CN2019/119787 CN2019119787W WO2021097726A1 WO 2021097726 A1 WO2021097726 A1 WO 2021097726A1 CN 2019119787 W CN2019119787 W CN 2019119787W WO 2021097726 A1 WO2021097726 A1 WO 2021097726A1
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Prior art keywords
access network
network node
cell
terminal device
primary
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PCT/CN2019/119787
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English (en)
French (fr)
Inventor
刘建华
付喆
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Oppo广东移动通信有限公司
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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 PCT/CN2019/119787 priority Critical patent/WO2021097726A1/zh
Priority to CN201980099923.8A priority patent/CN114303428B/zh
Publication of WO2021097726A1 publication Critical patent/WO2021097726A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/06Synchronising arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements

Definitions

  • the embodiments of the present invention relate to the field of communication technology, and in particular to a method for determining a time stamp, a terminal device, an access network node, a core network device, a chip, a computer-readable storage medium, a computer program product, and a computer program.
  • TA timing advance
  • the terminal device has different ways to obtain TA in the idle state and the connected state.
  • TSN Time Sensitive Network
  • the requirement of the current synchronization mechanism is to use a reference clock to set the data in time stamp and the data out time stamp in the 5GS.
  • the terminal may be connected to different base stations at the same time.
  • how to set the reference clock for the data input timestamp and the data output timestamp is a problem to be solved.
  • embodiments of the present invention provide a method for determining a time stamp, a terminal device, an access network node, a core network device, a chip, a computer-readable storage medium, a computer program product, and a computer program.
  • a method for determining a timestamp including:
  • the terminal device uses the clock of the first access network node or the first cell as a reference clock, and the terminal device is connected to at least two access network nodes or to at least two cells at the same time;
  • the terminal device sets a data in time stamp and a data out time stamp based on the reference clock.
  • a method for determining a timestamp including:
  • the primary access network node determines that the terminal device uses the clock of the first access network node or the first cell as the reference clock ;
  • the reference clock is used to set the data in time stamp and the data out time stamp.
  • a method for determining a timestamp including:
  • the core network device determines that the terminal device uses the clock of the first access network node or the first cell as the reference clock;
  • the reference clock is used to set the data in time stamp and the data out time stamp.
  • a terminal device is provided, the terminal device is connected to at least two access network nodes or connected to at least two cells at the same time, and the terminal device includes:
  • the first processing unit uses the clock of the first access network node or the first cell as the reference clock; and, based on the reference clock, sets the data in time stamp and the data out time stamp.
  • an access network node including:
  • the second processing unit determines that the terminal device uses the clock of the first access network node or the first cell as the reference clock when the terminal device is connected to at least two access network nodes or connected to at least two cells at the same time ;
  • the reference clock is used to set the data in time stamp and the data out time stamp.
  • a core network device including:
  • the third processing unit determines that the terminal device uses the clock of the first access network node or the first cell as the reference clock when the terminal device is connected to at least two access network nodes or connected to at least two cells at the same time ;
  • the reference clock is used to set the data in time stamp and the data out time stamp.
  • a terminal device including: a processor and a memory for storing a computer program that can run on the processor,
  • 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 steps of the foregoing method.
  • an access network node including: a processor and a memory for storing a computer program that can run on the processor,
  • 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 steps of the foregoing method.
  • a core network device including: a processor and a memory for storing computer programs that can run on the processor,
  • 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 steps of the foregoing method.
  • a chip including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the aforementioned method.
  • a computer-readable storage medium is provided, and the computer-readable storage medium is used to store a computer program that enables a computer to execute the steps of the aforementioned method.
  • a computer program product including computer program instructions that cause a computer to execute the aforementioned method.
  • a computer program which causes a computer to execute the method as described above.
  • the terminal device when the terminal device is connected to multiple access network nodes or multiple cells, it can be determined to use the clock of the first access network node or the first cell to set the reference clock, and then based on The reference clock determines the data in time stamp and the data out time stamp.
  • Figure 1-1 is a schematic diagram 1 of a communication system architecture provided by an embodiment of the present invention.
  • Figure 1-2 is a schematic diagram of a network architecture provided by an embodiment of the present invention.
  • Figures 1-3 are schematic diagrams of a synchronization error generation scenario provided by an embodiment of the present invention.
  • FIGS 1-4 are schematic diagrams of a synchronization processing flow provided by an embodiment of the present invention.
  • FIG. 2 is a schematic diagram 1 of the flow of a method for determining a timestamp according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram 2 of a flow chart of a method for determining a timestamp according to an embodiment of the present invention
  • FIG. 4 is a third schematic flowchart of a method for determining a timestamp according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of the structure of a terminal device provided by an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of the structure of an access network node provided by an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of the composition structure of a core network device provided by an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of the composition structure of a communication device provided by an embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram 2 of a communication system architecture provided by an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile Communication
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the communication system 100 applied in the embodiment of the present application may be as shown in FIG. 1-1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a UE 120 (or called a communication terminal or a terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with UEs located in the coverage area.
  • the network device 110 may be a network device (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a network device (NodeB, NB) in a WCDMA system, or an evolution in an LTE system Type network equipment (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, In-vehicle devices, wearable devices, hubs, switches, bridges, routers, network side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB network device
  • LTE system Type network equipment 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, In-vehicle devices, wearable
  • the communication system 100 also includes at least one UE 120 located within the coverage area of the network device 110.
  • UE as used herein includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, and direct cable connection; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM Broadcast transmitter; and/or another UE's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • a UE set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a "mobile terminal”.
  • direct terminal connection (Device to Device, D2D) communication may be performed between the UEs 120.
  • 5G IIoT needs to support the transmission of services such as Factory automation, Transport Industry, Intelligent Power Electrical Power Distribution in 5G systems. Based on its transmission requirements for delay and reliability, IIoT introduces the concept of Time Sensitive Network (TSN) network or TSC.
  • TSN Time Sensitive Network
  • the 5C network will act as a TSN bridge (as shown in Figure 1-2) to provide services for the TSN network and services.
  • the NR system needs to provide lower delay guarantees and higher clock synchronization accuracy. So that when the industrial automation business is transmitted in the 5G network, the operation and connection of each point of the mechanical operation are accurate and meet the time requirements.
  • TSN service when TSN service is transmitted in 5G, it needs to meet the time synchronization accuracy requirement of 1 us.
  • the time accuracy of 1us can be achieved, as shown in Figure 1-3, from the air interface, it is related to the time synchronization accuracy (accuracy) notified by the network and the time synchronization accuracy error on the UE side (delta).
  • the synchronization error on the UE side is determined by RAN1 To be sure, the error is related to many factors, such as propagation loss, equipment limitations, etc.
  • TimeReferenceInfo IE The time synchronization information and time synchronization accuracy information notified by the network are included in TimeReferenceInfo IE.
  • propagation delay compensation is required to make the time synchronization accuracy error of the physical layer within the required range, so as to finally ensure that the TSN service meets the 1us time synchronization accuracy requirement when transmitting in 5G.
  • TA can be used for propagation delay compensation.
  • TA is usually used to compensate for propagation delay.
  • the UE has different ways to acquire TA in the idle state and the connected state.
  • the UE When the UE is in the idle state or inactive state, it does not maintain time synchronization with the network side. Therefore, the UE needs to obtain the TA (timing advance) during the initial access process through the RA process to perform synchronization calibration.
  • the UE In the connected state, the UE obtains TA (timing advance) according to the TAC (TA command) sent by the network, and performs synchronization calibration.
  • TAC TA command
  • the existing conditions for triggering the RA process are as follows: initial access from the RRC idle state; RRC connection re-establishment process; handover; when in the RRC connected state, the uplink synchronization state is "asynchronous", and the uplink or downlink is transmitted. Data; RRC inactive transmission; To establish time alignment at SCell addition in the secondary cell; Request other SI; Beam failure recovery.
  • the uplink frame transmission advance is (N TA + N TA offset ) ⁇ T c .
  • NTA is related to the indicated TA command carried in TAC or RAR.
  • the index given in the TA command is the index of the timing advance adjustment.
  • N TA T A ⁇ 16 ⁇ 64/2 ⁇
  • T A TA command, and its value is: 0,1,2,...,3846.
  • NTA offset is shown in Table 1 below.
  • RAN4 has requirements for the accuracy of TA adjustment. The minimum requirements are shown in Table 2 below.
  • the embodiment of the present invention provides a synchronization method, as shown in FIG. 2, including:
  • Step 21 The terminal device uses the clock of the first access network node or the first cell as a reference clock, and the terminal device is connected to at least two access network nodes or connected to at least two cells at the same time.
  • Step 22 The terminal device sets a data in time stamp and a data out time stamp based on the reference clock.
  • the embodiment of the present invention also provides a synchronization method, as shown in FIG. 3, including:
  • Step 31 When a terminal device is connected to at least two access network nodes or connected to at least two cells at the same time, the primary access network node determines that the terminal device uses the clock of the first access network node or the first cell As a reference clock; the reference clock is used to set the data in time stamp and the data out time stamp.
  • the embodiment of the present invention also provides a synchronization method, as shown in FIG. 4, including:
  • Step 41 When a terminal device is connected to at least two access network nodes or connected to at least two cells at the same time, the core network device determines that the terminal device uses the clock of the first access network node or the first cell as a reference Clock; the reference clock is used to set the data in time stamp and the data out time stamp.
  • the terminal may be connected to different base stations at the same time.
  • the two base stations may not be synchronized. Therefore, which reference clock should be used when setting Ti and Te is currently not clear.
  • the above problem is solved by determining the manner of determining Ti and Te by determining the clock of the first access network node or the clock of the first cell as the reference clock.
  • 5GS ingress (5G input) and 5GS egress (5G output) set data in time stamp Ti and data out time stamp Te based on 5G internal clock, use the following benchmark to set Ti (data in time stamp) and Te (data out timestamp).
  • Ti data in time stamp
  • Te data out time stamp
  • Ti represents the time point when the data arrives at the input end
  • Te represents the time point when data arrives at the output end
  • the 5GS ingress may be UPF/NW-TT (Network-side TSN translator, network-side time-sensitive network converter) or UE/DS-TT.
  • 5GS egress can be UE/DS-TT or UPF/NW-TT.
  • the 5GS ingress is UPF/NW-TT
  • the 5GS egress is UE/DS-TT as an example.
  • the reverse is also possible, but this embodiment will not be exhaustive.
  • the first access network node is one of the following:
  • auxiliary access network node designated access network node
  • the first cell is one of the following:
  • the primary cell of the primary access network the primary cell of the secondary access network, and the designated cell.
  • the at least two access network nodes include the first access network node
  • the at least two cells include the first cell.
  • this embodiment is mainly used when a terminal device is connected to two or more cells or multiple base stations at the same time, or is camped on two or more cells or base stations at the same time, and it starts in this case.
  • Time-sensitive network (TSN) clock-synchronized terminal equipment and core network equipment for example, UPF are processed according to one of the following examples:
  • the first access network node may be the main access network node or the auxiliary access network node. specific:
  • the terminal equipment and the network side are set according to the clock of the main access network node as the reference clock; correspondingly, the network side, such as the core network equipment or the first access network equipment, is set according to the clock of the main access network node as a reference clock. Furthermore, both the terminal device and the network side determine the corresponding Ti and Te according to the reference clock.
  • the terminal device is set according to the clock of the auxiliary access network node as the reference clock; correspondingly, the network side, such as the core network device or the first access network device, all uses the clock of the auxiliary access network node as the reference clock. Furthermore, both the terminal device and the network side determine the corresponding Ti and Te according to the reference clock.
  • the first access network node is the primary access network node or the secondary access network node, which may be determined by both the terminal device and the network side based on the protocol; or may be instructed by the primary access network node; or , Which can be instructed by the core network equipment.
  • the terminal device and the network side (such as the core network) will default to the primary access network node or the secondary access network node
  • the clock is used as a reference clock.
  • the terminal device itself determines to use the clock of the primary access network node (or the secondary access network node) as the reference clock, it can notify the core network device through the fifth indication information.
  • the primary access network node may send indication information to the terminal device to notify the use of the primary access network
  • the clock of the node (or the secondary access network node) is the reference clock; and the primary access network node can also send the same indication information to the core network device. In this way, the network side and the terminal device can determine the same reference clock.
  • the core network device may send indication information to the terminal device to notify the primary access network node (or The clock of the auxiliary access network node) is the reference clock. In this way, the network side and the terminal device can determine the same reference clock.
  • the first access network node is a designated access network node; or the first cell is a designated cell.
  • the first access network node may be a designated primary access network node, or a designated secondary access network node, or may be a designated other than the primary access network node and the secondary access network node. node.
  • the other nodes may be other access network nodes except for the main access network node and the auxiliary access network node among the multiple access network nodes to which the terminal device is currently connected.
  • the first cell can be the primary cell of the designated primary access network node, or the primary cell of the designated secondary access network node, or can be a designated access network node other than the primary access network node and the secondary access network node.
  • the community connected to the network can be cells of other access networks except for the cells of the primary access network and the secondary access network among the multiple cells to which the terminal device is currently connected.
  • the clock of the designated access network node or designated cell can be set as the reference clock.
  • the terminal equipment and the core network equipment (such as UPF) all use the clock of the designated access network node or cell as the reference clock to set Ti and Te.
  • the processing is done in the following way:
  • the terminal device receives the first indication information sent by the primary access network node; wherein the first indication information is used to indicate the first access network node or the first cell.
  • the primary access network node sends first indication information to the terminal device.
  • the first indication information is carried by an RRC message.
  • the master access network node determines which access network or cell clock is the reference clock, and informs the terminal device through the first indication information, for example, indicates to the terminal through the RRC message. After receiving the first indication information, the terminal device can determine which access network node or which cell clock to use as a reference clock.
  • the primary access network node sends third indication information to the core network device
  • the third indication information is used to indicate the first access network node or the first cell to the core network device.
  • the primary access network node will also send instruction information to the core network device.
  • the core network device will determine which access network node or which cell clock the terminal device will use as the reference clock according to the third indication information sent by the primary access network node, and then determine the data corresponding to the terminal device Time stamps for incoming and outgoing data.
  • the core network device is one of the following: access and mobility management function AMF, session management function SMF, and user plane function UPF.
  • the third indication information finally needs to be sent to the UPF side of the core network.
  • the primary access network node instructs the SMF of the core network, and then the SMF instructs the UPF;
  • the primary access network node indicates the AMF to the core network, and then the AMF indicates to the SMF and then to the UPF.
  • the terminal device receives the second indication information sent by the core network device; wherein the second indication information is used to indicate the clock of the first access network node as the reference clock, or the clock of the first cell is used as the reference clock .
  • the core network device sends second indication information to the terminal device; where the second indication information is used to indicate the first access network node or the first cell.
  • the core network determines which access network or cell clock is the reference clock, and instructs it to the terminal, for example, through a NAS message.
  • the core network device determines the reference clock corresponding to the terminal device, and then determines the data in and data out timestamps corresponding to the terminal device.
  • the second indication information is carried by a NAS message.
  • the core network device may be AMF or SMF or UPF.
  • the core network device when the core network device is AMF or SMF, the core network device will send fourth indication information to UPF for instructing the clock of the first access network node of the terminal device as the reference clock, or adopt the first The clock of a cell is used as a reference clock.
  • the designated access network node or designated cell is used as the first access network node or first cell.
  • the designated access network node is one of the at least two access network nodes to which the terminal device is connected; and the designated cell is also one of the at least two cells to which the terminal device is connected.
  • the designated access network node can be the primary access network node or the secondary access network node, or it can be the primary access network node among the multiple access network nodes currently connected to the terminal device. Nodes and access network nodes other than auxiliary access network nodes.
  • the designated cell may be the primary cell of the primary access network, or may be the primary cell of the secondary access network, or, may also be the multiple cells currently connected to the terminal device in addition to the primary access network and the secondary cell. Cells other than the primary cell of the access network.
  • the first cell may be the primary cell of the primary access network, or the first cell may be the primary cell of the secondary access network.
  • the clock of the primary cell of the primary/secondary access network node is used as the reference clock, and both the UE and UPF use the reference clock of the primary cell of the primary/secondary access network node as the reference clock; and then Ti and Te are determined.
  • determining which primary cell to use as the first cell may be determined by a pre-protocol, or may be instructed by the main access network node, or may be instructed by the core network device.
  • the terminal equipment and the network side (such as the core network) will default to the clock of the primary cell of the primary access network as the reference clock; or
  • the protocol determines that the clock of the primary cell of the secondary access network is used as the reference clock, and the terminal device and the network side (such as the core network) default to the clock of the primary cell of the secondary access network as the reference clock.
  • the terminal device itself determines to use the clock of the primary cell of the primary access network as the reference clock, it can notify the core network device through the fifth indication information.
  • the primary access network node may send indication information to the terminal device,
  • the clock of the primary cell that notifies the use of the primary access network (or the primary cell of a certain secondary small access network) is used as a reference clock; and the primary access network node may also send indication information to the core network device. In this way, the network side and the terminal device can determine the same reference clock.
  • the core network device may send indication information to the terminal device to notify the adoption of The clock of the primary cell of the primary access network (or the primary cell of a certain secondary small access network) is the reference clock. In this way, the network side and the terminal device can determine the same reference clock.
  • the embodiment of the present invention provides a terminal device, which is connected to at least two access network nodes or connected to at least two cells at the same time; as shown in FIG. 5, the terminal device includes:
  • the first processing unit 51 uses the clock of the first access network node or the first cell as a reference clock; based on the reference clock, sets the data in time stamp and the data out time stamp.
  • the embodiment of the present invention also provides a primary access network node, as shown in FIG. 6, including:
  • the second processing unit 61 when the terminal device is connected to at least two access network nodes or connected to at least two cells at the same time, determines that the terminal device uses the clock of the first access network node or the first cell as a reference Clock; the reference clock is used to set the data in time stamp and the data out time stamp.
  • the embodiment of the present invention also provides a core network device, as shown in FIG. 7, including:
  • the third processing unit 71 when the terminal device is connected to at least two access network nodes or connected to at least two cells at the same time, determines that the terminal device uses the clock of the first access network node or the first cell as a reference Clock; the reference clock is used to set the data in time stamp and the data out time stamp.
  • the first access network node is one of the following:
  • auxiliary access network node designated access network node
  • the first cell is one of the following:
  • the primary cell of the primary access network the primary cell of the secondary access network, and the designated cell.
  • the primary access network node, the secondary access network node, and the designated access network node are included in the at least two access network nodes;
  • the cell of the primary access network, the cell of the secondary access network, and the designated cell are included in the at least two cells.
  • the first access network node may be the main access network node or the auxiliary access network node. specific:
  • the UE and UPF that initiate TSN clock synchronization set Ti in one of the following ways And Te.
  • the terminal equipment and the network side are set according to the clock of the main access network node as the reference clock; correspondingly, the network side, such as the core network equipment or the first access network equipment, is set according to the clock of the main access network node as a reference clock. Furthermore, both the terminal device and the network side determine the corresponding Ti and Te according to the reference clock.
  • the terminal device is set according to the clock of the auxiliary access network node as the reference clock; correspondingly, the network side, such as the core network device or the first access network device, all uses the clock of the auxiliary access network node as the reference clock. Furthermore, both the terminal device and the network side determine the corresponding Ti and Te according to the reference clock.
  • the first access network node is the primary access network node or the secondary access network node, which may be determined by both the terminal device and the network side based on the protocol; or may be instructed by the primary access network node; or , Which can be instructed by the core network equipment.
  • the first access network node is a designated access network node; or the first cell is a designated cell.
  • the clock of the designated access network node or designated cell can be set as the reference clock.
  • the terminal equipment and the core network equipment (such as UPF) all use the clock of the designated access network node or cell as the reference clock to set Ti and Te.
  • the designated access network node or designated cell clock is determined as follows:
  • the terminal device further includes: a first communication unit 52 that receives first indication information sent by a primary access network node; wherein the first indication information is used to indicate the first access network node, or the first One district.
  • the primary access network node further includes: a second communication unit 62, which sends first indication information to the terminal device.
  • the first indication information is carried by an RRC message.
  • the second communication unit 62 of the primary access network node sends third indication information to the core network device; wherein the third indication information is used to indicate the first access network node to the core network device, or, The first cell.
  • the core network device further includes: a third communication unit 72, which receives the third indication information sent by the primary access network node.
  • the first communication unit 52 of the terminal device receives the second indication information sent by the core network device; where the second indication information is used to indicate the first access network node or the first cell.
  • the third communication unit 72 of the core network device sends second indication information to the terminal device; wherein, the second indication information is used to indicate that the clock of the first access network node is used as a reference clock, or, The clock of the first cell is used as the reference clock.
  • the second indication information is carried by a NAS message.
  • the core network device may be AMF or SMF or UPF.
  • the first cell may be the primary cell of the primary access network, or the first cell may be the primary cell of the secondary access network.
  • the clock of the primary cell of the primary/secondary access network node is used as the reference clock, and both the UE and UPF use the reference clock of the primary cell of the primary/secondary access network node as the reference clock; and then Ti and Te are determined.
  • FIG. 8 is a schematic structural diagram of a communication device 900 provided by an embodiment of the present invention.
  • the communication device in this embodiment may be specifically one of the terminal device, the access network node, and the core network device in the foregoing embodiment.
  • the communication device 900 shown in FIG. 8 includes a processor 910, and the processor 910 can call and run a computer program from the memory to implement the method in the embodiment of the present invention.
  • the communication device 900 may further include a memory 920.
  • the processor 910 can call and run a computer program from the memory 920 to implement the method in the embodiment of the present invention.
  • the memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.
  • the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 930 may include a transmitter and a receiver.
  • the transceiver 930 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 900 may specifically be a network device in an embodiment of the present invention, and the communication device 900 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present invention. For brevity, details are not repeated here. .
  • the communication device 900 may specifically be a terminal device or a network device in an embodiment of the present invention, and the communication device 900 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present invention. It's concise, so I won't repeat it here.
  • Fig. 9 is a schematic structural diagram of a chip according to an embodiment of the present invention.
  • the chip 1000 shown in FIG. 9 includes a processor 1010, and the processor 1010 can call and run a computer program from the memory to implement the method in the embodiment of the present invention.
  • the chip 1000 may further include a memory 1020.
  • the processor 1010 can call and run a computer program from the memory 1020 to implement the method in the embodiment of the present invention.
  • the memory 1020 may be a separate device independent of the processor 1010, or may be integrated in the processor 1010.
  • the chip 1000 may further include an input interface 1030.
  • the processor 1010 can control the input interface 1030 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 1000 may further include an output interface 1040.
  • the processor 1010 can control the output interface 1040 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to one of the terminal device, the access network node, and the core network device in the embodiment of the present invention, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present invention , For the sake of brevity, I won’t repeat it here.
  • the chip mentioned in the embodiment of the present invention may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.
  • the processor in the embodiment of the present invention may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the 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 (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other 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 invention can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present invention may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • 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 embodiment of the present invention may be a volatile memory or a 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), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present invention 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 rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link 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
  • DRAM dynamic random access memory
  • SDRAM Synchronous dynamic random access memory
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • synchronous connection Dynamic random access memory switch link DRAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • FIG. 10 is a schematic block diagram of a communication system 1100 according to an embodiment of the present application. As shown in FIG. 10, the communication system 1100 includes a terminal device 1110 and a network device 1120.
  • the terminal device 1110 can be used to implement the corresponding function implemented by the UE in the above method
  • the network device 1120 can be used to implement the corresponding function implemented by the network device in the above method.
  • the network device may be one of the aforementioned access network node and core network device.
  • the embodiment of the present invention also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device or the terminal device in the embodiment of the present invention, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention, for the sake of brevity , I won’t repeat it here.
  • the embodiment of the present invention also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device or the terminal device in the embodiment of the present invention, 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 invention.
  • 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 invention.
  • the embodiment of the present invention also provides a computer program.
  • the computer program can be applied to the network device or the terminal device in the embodiment of the present invention.
  • the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention. , For the sake of brevity, I won’t repeat it here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It 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 they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be 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 can be stored in a computer readable storage medium.
  • the technical solution of the present invention essentially or the part that contributes to the existing technology or the 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 make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present invention.
  • 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

本发明公开了一种确定时间戳的方法、终端设备、接入网节点、核心网设备、芯片、计算机可读存储介质、计算机程序产品以及计算机程序,所述方法包括:终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟;所述终端设备同时连接至少两个接入网节点或者同时连接至少两个小区;所述终端设备基于所述参考时钟,设置数据入时间戳以及数据出时间戳。

Description

确定时间戳的方法、终端设备、接入网节点、核心网设备 技术领域
本发明实施例涉及通信技术领域,尤其涉及一种确定时间戳的方法、终端设备、接入网节点、核心网设备、芯片、计算机可读存储介质、计算机程序产品以及计算机程序。
背景技术
在通信系统中,通常采用TA(timing advance,时间提前)进行传播时延的补偿。终端设备在空闲态和连接态有不同的获取TA的方式。在采用5GS支持时间敏感网络(TSN)中,需要将TSN时钟进行同步。目前同步机制的要求是在5GS内具有采用参考时钟来设置数据入时间戳以及数据出时间戳。在一些场景下终端可能同时连接不同的基站,但是,这种场景下如何设置数据入时间戳以及数据出时间戳的参考时钟是需要解决的问题。
发明内容
为解决上述技术问题,本发明实施例提供了一种确定时间戳的方法、终端设备、接入网节点、核心网设备、芯片、计算机可读存储介质、计算机程序产品以及计算机程序。
第一方面,提供了一种确定时间戳的方法,包括:
终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟,所述终端设备同时连接至少两个接入网节点或者同时连接至少两个小区;
所述终端设备基于所述参考时钟,设置数据入时间戳以及数据出时间戳。
第二方面,提供了一种确定时间戳的方法,包括:
在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,主接入网节点确定所述终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
第三方面,提供了一种确定时间戳的方法,包括:
在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,核心网设备确定所述终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
第四方面,提供了一种终端设备,所述终端设备同时连接至少两个接入 网节点或者同时连接至少两个小区,所述终端设备包括:
第一处理单元,采用第一接入网节点或者第一小区的时钟作为参考时钟;以及,基于所述参考时钟,设置数据入时间戳以及数据出时间戳。
第五方面,提供了一种接入网节点,包括:
第二处理单元,在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,确定所述终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
第六方面,提供了一种核心网设备,包括:
第三处理单元,在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,确定所述终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
第七方面,提供了一种终端设备,包括:处理器和用于存储能够在处理器上运行的计算机程序的存储器,
其中,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,执行前述方法的步骤。
第八方面,提供了一种接入网节点,包括:处理器和用于存储能够在处理器上运行的计算机程序的存储器,
其中,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,执行前述方法的步骤。
第九方面,提供了一种核心网设备,包括:处理器和用于存储能够在处理器上运行的计算机程序的存储器,
其中,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,执行前述方法的步骤。
第十方面,提供了一种芯片,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前所述的方法。
第十一方面,提供了一种计算机可读存储介质,所述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前所述方法的步骤。
第十二方面,提供了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前所述的方法。
第十三方面,提供了一种计算机程序,所述计算机程序使得计算机执行如前所述的方法。
通过采用上述方案,通过采用上述方案,在终端设备连接多个接入网节点,或者连接多个小区的时候,可以确定采用第一接入网节点或第一小区的时钟设置参考时钟,进而基于参考时钟确定数据入时间戳以及数据出时间戳。从而解决了现有技术中无法提供在异步网络中设置时间戳的问题。
附图说明
图1-1是本发明实施例提供的一种通信系统架构的示意性图一;
图1-2为本发明实施例提供的一种网络架构示意图;
图1-3为本发明实施例提供的一种同步误差的产生场景示意图;
图1-4为本发明实施例提供的一种同步处理流程示意图;
图2为本发明实施例提供的一种确定时间戳的方法流程示意图一;
图3为本发明实施例提供的一种确定时间戳的方法流程示意图二;
图4为本发明实施例提供的一种确定时间戳的方法流程示意图三;
图5为本发明实施例提供的终端设备组成结构示意图;
图6为本发明实施例提供的接入网节点组成结构示意图;
图7为本发明实施例提供的核心网设备组成结构示意图;
图8为本发明实施例提供的一种通信设备组成结构示意图;
图9是本申请实施例提供的一种芯片的示意性框图;
图10是本申请实施例提供的一种通信系统架构的示意性图二。
具体实施方式
为了能够更加详尽地了解本发明实施例的特点与技术内容,下面结合附图对本发明实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本发明实施例。
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可以如图1-1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UE120(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UE进行通信。可选地,该网络设备110可以是GSM系统或CDMA系统中的网络设备(Base Transceiver Station,BTS),也可以是WCDMA系统中的网络设备(NodeB,NB),还可以是LTE系统中的演进型网络设备(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UE120。作为在此使用的“UE”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UE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UE可以被称为“无线通信终端”、“无线终端”或“移动终端”。
可选地,UE120之间可以进行终端直连(Device to Device,D2D)通信。
5G IIoT中需求支持工业自动化Factory automation,传输自动化Transport Industry,智能电力Electrical Power Distribution等业务在5G系统的传输。基于其时延和可靠性的传输需求,IIoT引入了时间敏感性网络(TSN)网络或TSC的概念。在TSN网络中,5C网络将作为TSN bridge(如图1-2),为TSN网络和业务提供服务。针对这一点,NR系统需要提供更低的时延保证,和更高的时钟同步精度。以便工业自动化业务在5G网络中传输的时候,机械操作的每一个点的操作和接续精准,且是符合时间要求的。
基于TSN业务传输的需求,TSN业务在5G内传输时,需要满足1us的时间同步精度需求。是否能达到1us的时间精度,如下图1-3所示,从空口看,跟网络通知的时间同步精度(accuracy)和UE侧的时间同步精度误差相关(delta),UE侧的同步误差由RAN1确定,其误差与很多因素相关,如传播损耗,设备限制等。
网络通知的时间同步信息和时间同步精度信息包含在TimeReferenceInfo IE中。
在某些场景下,需要进行传播时延补偿,方能使得物理层的时间同步精度误差在需要的范围内,以最终保证TSN业务在5G内传输时满足1us的时间同步精度需求。
需要考虑在距离大于200m的场景下,实现传输时延补偿的方法。例如,可以利用TA进行传播时延补偿。
在通信系统中,通常采用TA进行传播时延的补偿。UE在空闲态和连接态有不同的获取TA的方式。在UE处于空闲态idle或非激活态inactive时,不维护和网络侧的时间同步,因此,UE需要通过RA过程,在初始接入过程中,获取TA(timing advance),进行同步校准。而在连接态connected,UE根据网络发送的TAC(TA command)获取TA(timing advance),进行同步校准。现有的触发RA过程的条件见下:由RRC空闲态初始接入;RRC连接重建立处理过程;切换;在处于RRC连接态时,上行同步状态为“非同步”,传输上行或下行链路数据;RRC非激活态的传输;在辅小区To establish time alignment at SCell addition;请求其他SI;波束失败恢复。
基于TAC或RA过程,上行帧传输提前量为(N TA+N TA offset)×T c。其中,NTA与TAC或RAR中携带的指示的TA command相关。TA command中给出的是定时提前量调整的index。对由RAR中携带TA command的场景来说,N TA=T A·16·64/2 μ,其中,T A=TA command,其取值为:0,1,2,...,3846。对由专用的TAC MAC CE指示TA command的场景来说,N TA_new=N TA_old+(T A-31)·16·64/2 μ.,其中,T A=TA command,其取值为:0,1,2,...,63。另外,TC为物理层最小时间单位,T c=1/(Δf max·N f)whereΔf max=480·10 3Hz and N f=4096。NTA offset其取值见下表1。
表1
Figure PCTCN2019119787-appb-000001
RAN4对TA调整的精度进行了要求,其最低要求见下表2
表2
Figure PCTCN2019119787-appb-000002
在采用5GS支持TSN网络的过程中,需要将TSN时钟进行同步,具体的同步方式可以如图1-4所示:
在图中,当来自于下行的同步消息“SYNC”“SYNC_Follow_Up”到5GS Ingress时,通常是UPF的TT功能实体,5GS Ingress将以5GS系统时钟为参考时钟的时间戳Ti添加到这两个消息中,然后将此消息发送到5GS Egress,通常指的是终端的TT功能实体。5GS Egress接受到此消息之后,将接收到此消息后,标记以5GS时钟为参考时钟的到达时间Te。相关技术的同步机制的要求是5GS ingress5GS(5G输入端)和5GS egress(5G输出端)在5GS时钟内具有相同的参考时钟来设置Ti(数据入时间戳)和Te(数据出时间戳)。
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。
为了能够更加详尽地了解本发明实施例的特点与技术内容,下面结合附图对本发明实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本发明实施例。
本发明实施例提供了一种同步方法,如图2所示,包括:
步骤21:终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟,所述终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区。
步骤22:所述终端设备基于所述参考时钟,设置数据入时间戳以及数据出时间戳。
本发明实施例还提供一种同步方法,如图3所示,包括:
步骤31:在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,主接入网节点确定所述终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
本发明实施例还提供一种同步方法,如图4所示,包括:
步骤41:在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,核心网设备确定所述终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
在一些场景下,例如在NSA(5G非独立组网)时,终端可能同时连接不同的基站,这两个基站有可能时钟不同步,因此当设置Ti和Te时应该采用哪一个参考时钟目前是不明确的。本实施例通过确定使用第一接入网节 点的时钟、或者第一小区的时钟作为参考时钟,来确定Ti以及Te的方式,来解决上述问题。
5GS ingress(5G输入端)和5GS egress(5G输出端)在进行5G内时钟为基准设置数据入时间戳Ti和数据出时间戳Te时,采用下述的基准设置Ti(数据入时间戳)和Te(数据出时间戳)。
其中,Ti(数据入时间戳)和Te(数据出时间戳),这两个时间戳与参考时钟是同步的,采用同一时钟。
Ti(数据入时间戳)表示数据到达输入端的时间点,Te(数据出时间戳)表示数据到达输出端的时间点。
本实施例提供的方案中,5GS ingress可以是UPF/NW-TT(Network-side TSN translator,网络侧时间敏感网络转换器)或者UE/DS-TT。5GS egress可以是UE/DS-TT或者UPF/NW-TT。下述以5GS ingress是UPF/NW-TT,5GS egress是UE/DS-TT为例。当然,反之亦可,只是本实施例不再进行穷举。
所述第一接入网节点为以下之一:
主接入网节点、辅接入网节点、指定的接入网节点;
所述第一小区为以下之一:
主接入网的主小区、辅接入网的主小区、指定的小区。
其中,所述至少两个接入网节点,包括所述第一接入网节点;
或者,
所述至少两个小区,包括所述第一小区。
结合以上说明,本实施例主要应用在当终端设备同时连接到两个或者多个小区或者多个基站时,或者同时驻留到两个或者多个小区或者基站的情况下,在该情况下启动时间敏感网络(TSN)时钟同步的终端设备和核心网设备(比如,UPF)按照下述多个示例中的一种进行处理:
示例1、
第一接入网节点可以为主接入网节点,或者辅接入网节点。具体的:
具体的,终端设备和网络侧均按照主接入网节点的时钟作为参考时钟设置;相应的,网络侧,比如核心网设备或者第一接入网设备都按照主接入网节点的时钟作为参考时钟。进而终端设备以及网络侧都根据所述参考时钟来确定对应的Ti以及Te。
或者,终端设备按照辅接入网节点的时钟作为参考时钟设置;相应的,网络侧,比如核心网设备或者第一接入网设备都按照辅接入网节点的时钟作为参考时钟。进而终端设备以及网络侧都根据所述参考时钟来确定对应的Ti以及Te。
本示例中,第一接入网节点为主接入网节点或者为辅接入网节点,可以为终端设备与网络侧均基于协议确定的;也可以为主接入网节点指示的;又或者,可以为核心网设备指示的。
比如,预先协议确定均采用主接入网节点或者辅接入网节点的时钟作为参考时钟,那么终端设备以及网络侧(比如核心网)均默认将主接入网节点或者为辅接入网节点的时钟作为参考时钟。
又或者,如果终端设备自身确定采用主接入网节点(或者辅接入网节点)的时钟作为参考时钟的话,那么可以通过第五指示信息通知核心网设备。
又或者,如果主接入网节点确定采用主接入网节点(或者辅接入网节点)的时钟作为参考时钟,那么主接入网可以向终端设备发送指示信息,以通知采用主接入网节点(或者辅接入网节点)的时钟为参考时钟;并且,主接入网节点可以向核心网设备也发送同样的指示信息。如此,网络侧以及终端设备可以确定同一个参考时钟。
又或者,如果核心网设备确定采用主接入网节点(或者辅接入网节点)的时钟作为参考时钟,那么核心网设备可以向终端设备发送指示信息,以通知采用主接入网节点(或者辅接入网节点)的时钟为参考时钟。如此,网络侧以及终端设备可以确定同一个参考时钟。
示例2、所述第一接入网节点为指定的接入网节点;或者第一小区为指定的小区。
本示例中,第一接入网节点可以为指定的主接入网节点、或者指定的辅接入网节点、或者可以为指定的除主接入网节点以及辅接入网节点之外的其他节点。其中,其他节点,可以为终端设备当前连接的多个接入网节点中,除主接入网节点以及辅接入网节点之外的其他接入网节点。
第一小区可以为指定的主接入网节点的主小区、或者指定的辅接入网节点的主小区、或者可以为指定的除主接入网节点以及辅接入网节点之外的其他接入网的小区。其中,其他接入网的小区,可以为终端设备当前连接的多个小区中,除主接入网以及辅接入网的小区之外的其他接入网的小区。
也就是说,可以将指定的接入网节点或者指定的小区的时钟,作为参考时钟设置。终端设备以及核心网设备(比如UPF)都按照指定的接入网节点或者小区的时钟作为参考时钟进行Ti以及Te的设置。
本示例中,按照下述方式进行处理:
方式1、所述终端设备接收主接入网节点发送的第一指示信息;其中,所述第一指示信息用于指示第一接入网节点,或者第一小区。相应的,所述主接入网节点向所述终端设备发送第一指示信息。
其中,所述第一指示信息,由RRC消息携带。
也就是说,由主接入网节点确定哪一个接入网或者小区的时钟为参考时钟,并且通过第一指示信息通知给终端设备,例如通过RRC消息指示给终端。终端设备通过接收到第一指示信息,就可以确定采用哪个接入网节点或者哪个小区的时钟作为参考时钟。
另外,所述主接入网节点向核心网设备发送第三指示信息;
其中,所述第三指示信息用于向核心网设备指示第一接入网节点,或者第一小区。
也就是说,主接入网节点也会发送指示信息给核心网设备。相应的,核心网设备会根据主接入网节点发送的第三指示信息,确定所述终端设备会采用哪个接入网节点或者哪个小区的时钟作为参考时钟,进而确定与终端设备所对应的数据入以及数据出时间戳。
其中,所述核心网设备为以下之一:接入和移动管理功能AMF、会话管理功能SMF、和用户面功能UPF。
优选的,该第三指示信息最终需要发送至核心网的UPF侧。
例如,主接入网节点指示给核心网的SMF,然后SMF指示给UPF;
或者,主接入网节点指示给核心网的AMF,然后由AMF指示给SMF进而指示给UPF。
方式2、
所述终端设备接收核心网设备发送的第二指示信息;其中,所述第二指示信息,用于指示第一接入网节点的时钟作为参考时钟,或者,采用第一小区的时钟作为参考时钟。
相应的,所述核心网设备向终端设备发送第二指示信息;其中,所述第二指示信息,用于指示第一接入网节点,或者第一小区。
也就是说,核心网确定哪一个接入网或者小区的时钟为参考时钟,并且指示给终端,例如通过NAS消息指示。相应的,核心网设备其确定所述终端设备对应的参考时钟,进而确定与终端设备所对应的数据入以及数据出时间戳。
所述第二指示信息由NAS消息携带。
本示例中,核心网设备可以是AMF或者SMF或者UPF。
进一步地,当核心网设备为AMF或SMF时,所述核心网设备会向UPF发送第四指示信息,用于指示所述终端设备第一接入网节点的时钟作为参考时钟,或者,采用第一小区的时钟作为参考时钟。
还需要指出的是,本示例中,将指定的接入网节点或指定的小区,作为第一接入网节点或第一小区。其中,指定的接入网节点为终端设备所连接的至少两个接入网节点中的一个;并且,指定的小区也为终端设备所连接的至少两个小区中的一个。
换句话说,指定的接入网节点,可以为主接入网节点、或者为辅接入网节点,或者,可以为所述终端设备当前连接的多个接入网节点中除了主接入网节点以及辅接入网节点之外的接入网节点。所述指定的小区,可以为主接入网的主小区、或者可以为辅接入网的主小区、或者,还可以为终端设备当前连接的多个小区中除了所述主接入网以及辅接入网的主小区之外的其他小区。
示例3、
第一小区可以为主接入网的主小区,或者,第一小区为辅接入网的主小区。
也就是说,将主/辅接入网节点的主小区的时钟作为参考时钟,UE和UPF都按照主/辅接入网节点的主小区的参考时钟作为参考时钟;进而确定Ti和Te。
本示例中,确定采用哪个主小区作为第一小区,可以为预先协议确定的,也可以为主接入网节点指示的,又或者,可以为核心网设备指示的。
比如,预先协议确定均采用主接入网的主小区的时钟作为参考时钟,那么终端设备以及网络侧(比如核心网)均默认将主接入网的主小区的时钟作为参考时钟;或者,预先协议确定均采用辅接入网的主小区的时钟作为参考时钟,那么终端设备以及网络侧(比如核心网)均默认辅接入网的主小区的时钟作为参考时钟。
又或者,如果终端设备自身确定采用主接入网的主小区的时钟作为参考时钟的话,那么可以通过第五指示信息通知核心网设备。
又或者,如果主接入网节点确定采用主接入网的主小区(或者某一个辅小接入网的主小区)的时钟作为参考时钟,那么主接入网可以向终端设备发送指示信息,以通知采用主接入网的主小区(或者某一个辅小接入网的主小区)的时钟为参考时钟;并且,主接入网节点可以向核心网设备也发送指示信息。如此,网络侧以及终端设备可以确定同一个参考时钟。
又或者,如果核心网设备确定采用主接入网的主小区(或者某一个辅小接入网的主小区)的时钟作为参考时钟,那么核心网设备可以向终端设备发送指示信息,以通知采用主接入网的主小区(或者某一个辅小接入网的主小区)的时钟为参考时钟。如此,网络侧以及终端设备可以确定同一个参考时钟。
可见,通过采用上述方案,在终端设备连接多个接入网节点,或者连接多个小区的时候,可以确定采用第一接入网节点或第一小区的时钟设置参考时钟,进而基于参考时钟确定数据入时间戳以及数据出时间戳。从而解决了现有技术中无法提供在异步网络中设置时间戳的问题。
本发明实施例提供了一种终端设备,所述终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区;如图5所示,所述终端设备包括:
第一处理单元51,采用第一接入网节点或者第一小区的时钟作为参考时钟;基于所述参考时钟,设置数据入时间戳以及数据出时间戳。
本发明实施例还提供一种主接入网节点,如图6所示,包括:
第二处理单元61,在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,确定所述终端设备采用第一接入网节点或者 第一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
本发明实施例还提供一种核心网设备,如图7所示,包括:
第三处理单元71,在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,确定所述终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
所述第一接入网节点为以下之一:
主接入网节点、辅接入网节点、指定的接入网节点;
所述第一小区为以下之一:
主接入网的主小区、辅接入网的主小区、指定的小区。
其中,所述主接入网节点、辅接入网节点以及所述指定的接入网节点,包含在所述至少两个接入网节点中;
所述主接入网的小区、辅接入网的小区以及所述指定的小区,包含在所述至少两个小区中。
结合以上说明,下面采用多个示例对本实施例提供的方案进行描述:
示例1、
第一接入网节点可以为主接入网节点,或者辅接入网节点。具体的:
当UE同时连接到两个或者多个小区或者多个基站时,或者当UE同时驻留到两个或者多个小区或者基站时,启动TSN时钟同步的UE和UPF按照下述一种方式设置Ti和Te。
具体的,终端设备和网络侧均按照主接入网节点的时钟作为参考时钟设置;相应的,网络侧,比如核心网设备或者第一接入网设备都按照主接入网节点的时钟作为参考时钟。进而终端设备以及网络侧都根据所述参考时钟来确定对应的Ti以及Te。
或者,终端设备按照辅接入网节点的时钟作为参考时钟设置;相应的,网络侧,比如核心网设备或者第一接入网设备都按照辅接入网节点的时钟作为参考时钟。进而终端设备以及网络侧都根据所述参考时钟来确定对应的Ti以及Te。
本示例中,第一接入网节点为主接入网节点或者为辅接入网节点,可以为终端设备与网络侧均基于协议确定的;也可以为主接入网节点指示的;又或者,可以为核心网设备指示的。
示例2、所述第一接入网节点为指定的接入网节点;或者第一小区为指定的小区。
也就是说,可以将指定的接入网节点或者指定的小区的时钟,作为参考时钟设置。终端设备以及核心网设备(比如UPF)都按照指定的接入网节点或者小区的时钟作为参考时钟进行Ti以及Te的设置。
本示例中,此指定的接入网节点或者指定的小区时钟按照下述方式确定:
方式1、所述终端设备还包括:第一通信单元52,接收主接入网节点发送的第一指示信息;其中,所述第一指示信息用于指示第一接入网节点,或者,第一小区。相应的,所述主接入网节点还包括:第二通信单元62,向所述终端设备发送第一指示信息。
其中,所述第一指示信息,由RRC消息携带。
另外,所述主接入网节点的第二通信单元62,向核心网设备发送第三指示信息;其中,所述第三指示信息用于向核心网设备指示第一接入网节点,或者,第一小区。相应的,核心网设备还包括:第三通信单元72,接收主接入网节点发送的第三指示信息。
方式2、
所述终端设备的第一通信单元52,接收核心网设备发送的第二指示信息;其中,所述第二指示信息,用于指示第一接入网节点,或者,第一小区。
相应的,所述核心网设备的第三通信单元72,向终端设备发送第二指示信息;其中,所述第二指示信息,用于指示第一接入网节点的时钟作为参考时钟,或者,采用第一小区的时钟作为参考时钟。
所述第二指示信息由NAS消息携带。
本示例中,核心网设备可以是AMF或者SMF或者UPF。
示例3、
第一小区可以为主接入网的主小区,或者,第一小区为辅接入网的主小区。
也就是说,将主/辅接入网节点的主小区的时钟作为参考时钟,UE和UPF都按照主/辅接入网节点的主小区的参考时钟作为参考时钟;进而确定Ti和Te。
可见,通过采用上述方案,在终端设备连接多个接入网节点,或者连接多个小区的时候,可以确定采用第一接入网节点或第一小区的时钟设置参考时钟,进而基于参考时钟确定数据入时间戳以及数据出时间戳。从而解决了现有技术中无法提供在异步网络中设置时间戳的问题。
图8是本发明实施例提供的一种通信设备900示意性结构图,本实施例中的通信设备可以具体为前述实施例中的终端设备、接入网节点、核心网设备中之一。图8所示的通信设备900包括处理器910,处理器910可以从存储器中调用并运行计算机程序,以实现本发明实施例中的方法。
可选地,图8所示,通信设备900还可以包括存储器920。其中,处理器910可以从存储器920中调用并运行计算机程序,以实现本发明实施例中的方法。
其中,存储器920可以是独立于处理器910的一个单独的器件,也可以集成在处理器910中。
可选地,如图8所示,通信设备900还可以包括收发器930,处理器910可以控制该收发器930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930可以包括发射机和接收机。收发器930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900具体可为本发明实施例的网络设备,并且该通信设备900可以实现本发明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900具体可为本发明实施例的终端设备、或者网络设备,并且该通信设备900可以实现本发明实施例的各个方法中由移动终端/终端设备实现的相应流程,为了简洁,在此不再赘述。
图9是本发明实施例的芯片的示意性结构图。图9所示的芯片1000包括处理器1010,处理器1010可以从存储器中调用并运行计算机程序,以实现本发明实施例中的方法。
可选地,如图9所示,芯片1000还可以包括存储器1020。其中,处理器1010可以从存储器1020中调用并运行计算机程序,以实现本发明实施例中的方法。
其中,存储器1020可以是独立于处理器1010的一个单独的器件,也可以集成在处理器1010中。
可选地,该芯片1000还可以包括输入接口1030。其中,处理器1010可以控制该输入接口1030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1000还可以包括输出接口1040。其中,处理器1010可以控制该输出接口1040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,该芯片可应用于本发明实施例中的终端设备、接入网节点、核心网设备中之一,并且该芯片可以实现本发明实施例的各个方法中由终端设备实现的相应流程,为了简洁,在此不再赘述。
应理解,本发明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。
应理解,本发明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发明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。结合本发明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,本发明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,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(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,本发明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,本发明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。
图10是本申请实施例提供的一种通信系统1100的示意性框图。如图10所示,该通信系统1100包括终端设备1110和网络设备1120。
其中,该终端设备1110可以用于实现上述方法中由UE实现的相应的功能,以及该网络设备1120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。所述网络设备可以为前述接入网节点、核心网设备中之一。
本发明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发明实施例中的网络设备或终端设备,并且该计算机程序使得计算机执行本发明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。
本发明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发明实施例中的网络设备或终端设备,并且该计算机程序指令使得计算机执行本发明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。
本发明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发明实施例中的网络设备或终端设备,当该计算机程序在计算机上运行时,使得计算机执行本发明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。
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发明的范围。
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。
在本发明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,在本发明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,本发 明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)执行本发明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,仅为本发明的具体实施方式,但本发明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发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应所述以权利要求的保护范围为准。

Claims (43)

  1. 一种确定时间戳方法,包括:
    终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟,所述终端设备同时连接至少两个接入网节点或者同时连接至少两个小区;
    所述终端设备基于所述参考时钟,设置数据入时间戳以及数据出时间戳。
  2. 根据权利要求1所述的方法,其中,所述第一接入网节点为以下之一:主接入网节点、辅接入网节点、指定接入网节点;或,
    所述第一小区为以下之一:主接入网的主小区、辅接入网的主小区、指定小区。
  3. 根据权利要求2所述的方法,其中,
    所述至少两个接入网节点,包括所述第一接入网节点;
    或者,
    所述至少两个小区,包括所述第一小区。
  4. 根据权利要求2所述的方法,其中,所述方法还包括:
    所述终端设备接收所述主接入网节点发送的第一指示信息;
    其中,所述第一指示信息用于指示第一接入网节点,或者第一小区。
  5. 根据权利要求4所述的方法,其中,所述第一指示信息由无线资源控制RRC消息携带。
  6. 根据权利要求2所述的方法,其中,所述方法还包括:
    所述终端设备接收核心网设备发送的第二指示信息;
    其中,所述第二指示信息用于指示第一接入网节点,或者第一小区。
  7. 根据权利要求6所述的方法,其中,所述核心网设备为以下之一:接入和移动管理功能AMF、会话管理功能SMF、和用户面功能UPF。
  8. 根据权利要求6所述的方法,其中,所述第二指示信息由非接入层NAS消息携带。
  9. 一种确定时间戳的方法,包括:
    在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,主接入网节点确定所述终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
  10. 根据权利要求9所述的方法,其中,所述第一接入网节点为以下之一:主接入网节点、辅接入网节点、指定的接入网节点;或,
    所述第一小区为以下之一:主接入网节点的主小区、辅接入网节点的主小区、指定的小区。
  11. 根据权利要求10所述的方法,其中,
    所述至少两个接入网节点,包括所述第一接入网节点;
    或者,
    所述至少两个小区,包括所述第一小区。
  12. 根据权利要求10所述的方法,其中,所述方法还包括:
    所述主接入网节点向所述终端设备发送第一指示信息;
    其中,所述第一指示信息用于指示第一接入网节点,或者第一小区。
  13. 根据权利要求10所述的方法,其中,所述方法还包括:
    所述主接入网节点向核心网设备发送第三指示信息;
    其中,所述第三指示信息用于向核心网设备指示第一接入网节点,或者第一小区。
  14. 一种确定时间戳的方法,包括:
    在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,核心网设备确定所述终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
  15. 根据权利要求14所述的方法,其中,所述第一接入网节点为以下之一:主接入网节点、辅接入网节点、指定的接入网节点;或,
    所述第一小区为以下之一:主接入网节点的主小区、辅接入网节点的主小区、指定的小区。
  16. 根据权利要求15所述的方法,其中,
    所述至少两个接入网节点,包括所述第一接入网节点;
    或者,
    所述至少两个小区,包括所述第一小区。
  17. 根据权利要求15所述的方法,其中,所述方法还包括:
    所述核心网设备向终端设备发送第二指示信息;
    其中,所述第二指示信息,用于指示第一接入网节点,或者第一小区。
  18. 根据权利要求15所述的方法,其中,所述第二指示信息由NAS消息携带。
  19. 一种终端设备,所述终端设备同时连接至少两个接入网节点或者同时连接至少两个小区,所述终端设备包括:
    第一处理单元,采用第一接入网节点或者第一小区的时钟作为参考时钟;以及,基于所述参考时钟,设置数据入时间戳以及数据出时间戳。
  20. 根据权利要求19所述的终端设备,其中,所述第一接入网节点为以下之一:主接入网节点、辅接入网节点、指定接入网节点;或,
    所述第一小区为以下之一:主接入网的主小区、辅接入网的主小区、指定小区。
  21. 根据权利要求20所述的终端设备,其中,
    所述至少两个接入网节点,包括所述第一接入网节点;
    或者,
    所述至少两个小区,包括所述第一小区。
  22. 根据权利要求20所述的终端设备,其中,所述终端设备还包括:
    第一通信单元,接收主接入网节点发送的第一指示信息;
    其中,所述第一指示信息用于指示第一接入网节点,或者第一小区。
  23. 根据权利要求22所述的终端设备,其中,所述第一指示信息,由无线资源控制RRC消息携带。
  24. 根据权利要求20所述的终端设备,其中,所述终端设备还包括:
    第一通信单元,接收核心网设备发送的第二指示信息;
    其中,所述第二指示信息,用于指示第一接入网节点,或者第一小区。
  25. 根据权利要求24所述的终端设备,其中,所述核心网设备为以下之一:接入和移动管理功能AMF、会话管理功能SMF、和用户面功能UPF。
  26. 根据权利要求24所述的终端设备,其中,所述第二指示信息由非接入层NAS消息携带。
  27. 一种接入网节点,包括:
    第二处理单元,在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,确定所述终端设备采用第一接入网节点或者第一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
  28. 根据权利要求27所述的接入网节点,其中,所述第一接入网节点为以下之一:主接入网节点、辅接入网节点、指定的接入网节点;或,
    所述第一小区为以下之一:主接入网节点的主小区、辅接入网节点的主小区、指定的小区。
  29. 根据权利要求28所述的接入网节点,其中,
    所述至少两个接入网节点,包括所述第一接入网节点;
    或者,
    所述至少两个小区,包括所述第一小区。
  30. 根据权利要求28所述的接入网节点,其中,所述接入网节点还包括:
    第二通信单元,向所述终端设备发送第一指示信息;
    其中,所述第一指示信息用于指示第一接入网节点,或者第一小区。
  31. 根据权利要求28所述的接入网节点,其中,所述接入网节点还包括:
    第二通信单元,向核心网设备发送第三指示信息;
    其中,所述第三指示信息用于向核心网设备指示第一接入网节点,或者第一小区。
  32. 一种核心网设备,包括:
    第三处理单元,在终端设备同时连接至少两个接入网节点或者同时连接在至少两个小区的情况下,确定所述终端设备采用第一接入网节点或者第 一小区的时钟作为参考时钟;所述参考时钟用于设置数据入时间戳以及数据出时间戳。
  33. 根据权利要求32所述的核心网设备,其中,所述第一接入网节点为以下之一:主接入网节点、辅接入网节点、指定的接入网节点;或,
    所述第一小区为以下之一:主接入网节点的主小区、辅接入网节点的主小区、指定的小区。
  34. 根据权利要求33所述的核心网设备,其中,
    所述至少两个接入网节点,包括所述第一接入网节点;
    或者,
    所述至少两个小区,包括所述第一小区。
  35. 根据权利要求33所述的核心网设备,其中,所述核心网设备还包括:
    第三通信单元,向终端设备发送第二指示信息;
    其中,所述第二指示信息,用于指示第一接入网节点,或者第一小区。
  36. 根据权利要求35所述的核心网设备,其中,所述第二指示信息由NAS消息携带。
  37. 一种终端设备,包括:处理器和用于存储能够在处理器上运行的计算机程序的存储器,
    其中,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1-8任一项所述方法的步骤。
  38. 一种接入网节点,包括:处理器和用于存储能够在处理器上运行的计算机程序的存储器,
    其中,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9-13任一项所述方法的步骤。
  39. 一种核心网设备,包括:处理器和用于存储能够在处理器上运行的计算机程序的存储器,
    其中,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14-18中任一项所述的方法。
  40. 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1-18中任一项所述的方法。
  41. 一种计算机可读存储介质,所述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1-18任一项所述方法的步骤。
  42. 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1-18中任一项所述的方法。
  43. 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1-18中任一项所述的方法。
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