WO2021072654A1 - 一种参考时钟的确定方法及装置、终端设备、网络设备 - Google Patents

一种参考时钟的确定方法及装置、终端设备、网络设备 Download PDF

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Publication number
WO2021072654A1
WO2021072654A1 PCT/CN2019/111313 CN2019111313W WO2021072654A1 WO 2021072654 A1 WO2021072654 A1 WO 2021072654A1 CN 2019111313 W CN2019111313 W CN 2019111313W WO 2021072654 A1 WO2021072654 A1 WO 2021072654A1
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WIPO (PCT)
Prior art keywords
reference clock
information
terminal device
clock information
network device
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PCT/CN2019/111313
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English (en)
French (fr)
Inventor
刘建华
付喆
Original Assignee
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.)
Filing date
Publication date
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/CN2019/111313 priority Critical patent/WO2021072654A1/zh
Priority to CN201980099356.6A priority patent/CN114270773B/zh
Publication of WO2021072654A1 publication Critical patent/WO2021072654A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00Arrangements for synchronising receiver with transmitter
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA

Definitions

  • the embodiments of the present application relate to the field of mobile communication technology, and specifically relate to a method and device for determining a reference clock, terminal equipment, and network equipment.
  • High-precision reference clock information can achieve a high degree of time synchronization between the terminal device and the network side, which is essential for time-sensitive services.
  • high-precision reference clock information can be sent from the network side to the terminal device by broadcasting.
  • the network side will not adaptively broadcast the high-precision reference clock information according to the needs of the terminal device, resulting in these high-precision reference clock information.
  • the reference clock information will occupy more air interface resources.
  • the embodiments of the present application provide a method and device for determining a reference clock, terminal equipment, and network equipment.
  • the network device receives a first request message sent by a terminal device, where the first request message is used to request the network device to send first reference clock information;
  • the network device sends the first reference clock information to the terminal device.
  • the terminal device sends a first request message to the network device, where the first request message is used to request the network device to send the first reference clock information;
  • the terminal device receives the first reference clock information sent by the network device.
  • a receiving unit configured to receive a first request message sent by a terminal device, where the first request message is used to request the network device to send first reference clock information;
  • the sending unit is configured to send the first reference clock information to the terminal device.
  • a sending unit configured to send a first request message to a network device, where the first request message is used to request the network device to send first reference clock information;
  • the receiving unit is configured to receive the first reference clock information sent by the network device.
  • the terminal device provided in 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 above-mentioned method for determining the reference clock.
  • 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 above-mentioned method for determining the reference clock.
  • the chip provided in the embodiment of the present application is used to implement the above-mentioned method for determining the reference clock.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned method for determining the reference clock.
  • the computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program enables a computer to execute the above-mentioned method for determining a reference clock.
  • the computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above-mentioned method for determining a reference clock.
  • the computer program provided in the embodiment of the present application runs on a computer
  • the computer executes the above-mentioned method for determining a reference clock.
  • the network device can determine whether to send the first reference clock information (that is, high-precision reference clock information) based on the request of the terminal device, thereby avoiding the use of high-precision reference clock-related features without terminal device support.
  • the first reference clock information is not broadcast, which saves air interface resources.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • Figure 2 is a network architecture diagram of a 5G system as a TSN bridge provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of time synchronization accuracy provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a method for determining a reference clock provided by an embodiment of the application
  • Figure 5-1 is a flowchart of Example 1 provided by an embodiment of the present application.
  • Fig. 5-2 is a flowchart of Example 2 provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram 1 of the structural composition of an apparatus for determining a reference clock provided by an embodiment of the application;
  • FIG. 7 is a second schematic diagram of the structural composition of the device for determining a reference clock provided by an embodiment of the application.
  • FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a chip of an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • 5G communication system 5G communication system or future communication system.
  • 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 called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminals located in the coverage area.
  • the network device 110 may be an evolved base station (Evolutional Node B, eNB, or eNodeB) in an LTE system, or a wireless controller in a 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, a wearable device, a hub, a switch, a bridge, a router, a network side device in a 5G network, or a network device in a future communication system, etc.
  • the communication system 100 also includes at least one terminal 120 located within the coverage area of the network device 110.
  • the "terminal” used here includes, but is not limited to, connection via a wired line, such as via a public switched telephone network (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 terminal's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN public switched telephone network
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • a terminal set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal can refer to access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user Device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminals 120.
  • the 5G communication 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 the coverage of each network device may include other numbers of terminals. This embodiment of the present application There is no restriction on this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment 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 with communication functions, 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 other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the 5G Industrial Internet of Things supports the transmission of services such as Industrial Automation (Factory Automation), Transport Automation (Transport Automation), and Intelligent Electrical Power (Intelligent Electrical Power) in 5G systems.
  • IIoT introduces the concept of Time Sensitive Networking (TSN) or TSC.
  • TSN Time Sensitive Networking
  • a 5G system (5G System, 5GS) will serve as a TSN bridge (TSN bridge) to provide services for the TSN network and services.
  • TSN bridge TSN bridge
  • the NR system needs to provide lower delay guarantees and higher clock synchronization accuracy, so that when industrial automation services are transmitted in the 5G network, the operation and connection accuracy of each point of the mechanical operation meets the time requirements.
  • the time synchronization accuracy requirement is related to the time synchronization accuracy (ie accuracy) notified by the network and the time synchronization accuracy error (ie ⁇ ) on the terminal device side.
  • the time synchronization accuracy error on the terminal device side is related to many factors. Related, such as propagation loss, equipment limitations, etc.
  • the time synchronization information and time synchronization accuracy information notified by the network side are included in the time reference information unit (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. For example, it is necessary to consider a method for realizing transmission delay compensation in a scenario where the distance is greater than 200m.
  • a timing advance (Timing Advance, TA) is usually used to compensate for propagation delay.
  • the terminal device has different TA acquisition methods in the idle state (or inactive state) and the connected state.
  • the terminal device When the terminal device is in an idle state or in an inactive state, time synchronization with the network side is not maintained. Therefore, the terminal device needs to obtain the TA during the initial access process through the random access process, and then perform synchronization calibration through the TA.
  • the terminal device obtains the TA according to a TA command (TA command, TAC) sent by the network, and then performs synchronization calibration through the TA.
  • TA command TA command
  • the uplink frame transmission advance is (N TA +N TAoffset ) ⁇ T c .
  • the N TA is related to the TAC or the indicated TAC carried in the random access response. What is given in the TAC is the index information for timing advance adjustment.
  • N TA T A ⁇ 16 ⁇ 64/2 ⁇
  • T A TAC
  • its value is: 0,1,2,...,3846 .
  • N TAoffset 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 time synchronization information received by the terminal device includes the time synchronization information after the network has compensated for the propagation delay.
  • the time synchronization information in the embodiments of the present application may also be referred to as reference clock information.
  • High-precision reference clock information occupies more air interface resources. When no terminal equipment in a cell supports or uses high-precision clock-related features, the network side may consider not broadcasting this reference clock information. To this end, the following technical solutions of the embodiments of the present application are proposed. The technical solutions of the embodiments of the present application enable the network device to determine whether to send high-precision reference clock information based on the request of the terminal device.
  • FIG. 4 is a schematic flowchart of a method for determining a reference clock provided by an embodiment of the application. As shown in FIG. 4, the method for determining a reference clock includes the following steps:
  • Step 401 The terminal device sends a first request message to the network device, and the network device receives the first request message sent by the terminal device, where the first request message is used to request the network device to send first reference clock information.
  • the network device may be a base station, such as a gNB.
  • the terminal device in order to obtain the first reference clock information, the terminal device sends a first request message to the network device, and the first request message is used to request the network device to send the first reference clock information.
  • the first reference clock information includes at least one of the following: clock information corresponding to TSN, clock information corresponding to TCS, and high-precision clock information (such as clock information with a precision of 10 ns). It should be noted that the reference clock information involved in the embodiments of the present application may also be referred to as time synchronization information.
  • Step 402 The network device sends the first reference clock information to the terminal device, and the terminal device receives the first reference clock information sent by the network device.
  • the network device may send the first reference clock information by using a system broadcast message. Specifically, the network device sends the first system information block (System Information Block) to the terminal device. Block, SIB), the first SIB carries the first reference clock information.
  • System Information Block System Information Block
  • the first SIB is an existing SIB, and the first reference clock information is carried in the existing SIB, so as to realize the broadcasting of the first reference clock information.
  • the first SIB is a newly defined SIB, and the newly defined SIB is specifically used to send the first reference clock information.
  • the content of the first reference clock information may refer to Table 3 below in the figure.
  • the above solution realizes that the network device sends the first reference clock information based on the request of the terminal device.
  • This sending method combines the on-demand SI sending method.
  • the first request message is MSG1 or MSG3 in the random access process.
  • the first request message is the message MSG1.
  • the terminal device sends MSG1 to the network device on the first PRACH resource, and the network device receives the terminal device on the first physical random access channel (Physical Random Access Channel, PRACH) resource
  • the first PRACH resource has an association relationship with the first reference clock information.
  • the first PRACH resource has an association relationship with the first reference clock information refers to that: the first PRACH resource is a resource specifically used to request the first reference clock information, or in other words, the first PRACH resource
  • the PRACH resource is a resource dedicated to sending MSG1 requesting the first reference clock information. It can be understood that the first PRACH resource is a specific PRACH resource used to request the first reference clock information.
  • the first PRACH resource is configured by the network device. Specifically, the network device sends first configuration information to the terminal device, and the terminal device receives the first configuration information sent by the network device. First configuration information, where the first configuration information is used to determine the configuration of the first PRACH resource.
  • the first configuration information includes at least one of the following: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information.
  • the network device may stop sending the first reference clock information to the terminal device under certain triggering modes. This will be described in detail below.
  • the network device After receiving the MSG1 sent by the terminal device on the first PRACH resource again, the network device stops sending the first reference clock information to the terminal device.
  • the network device After the network device receives the MSG1 sent by the terminal device on the first PRACH resource, it starts a first timer; during the operation of the first timer, the network device sends all data to the terminal device.
  • the first reference clock information if the first timer expires, the network device stops sending the first reference clock information to the terminal device.
  • the duration of the first timer is predefined; or, the duration of the first timer is associated with the first PRACH resource.
  • the first request message is MSG3 or dedicated radio resource control (Radio Resource Control, RRC) message or media access control (Media Access Control, MAC) message.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the terminal device sends a first request message to the network device, and the network device receives a first request message sent by the terminal device, where the first request message carries first indication information, and The first indication information is used to instruct the network device to send the first reference clock information.
  • the network device may stop sending the first reference clock information to the terminal device under certain triggering modes. This will be described in detail below.
  • the network device again receives the first request message sent by the terminal device, the first request message carries second indication information, and the second indication information is used to instruct the network device to stop sending the first request message.
  • the network device again receives the first request message sent by the terminal device, the first request message carries the first indication information; the network device stops sending the first reference to the terminal device Clock information.
  • the network device After the network device receives the first request message sent by the terminal device, it starts a second timer; while the second timer is running, the network device sends the first request message to the terminal device. Reference clock information; if the second timer expires, the network device stops sending the first reference clock information to the terminal device.
  • the duration of the second timer is predefined; or, the duration of the second timer is carried in the first request message.
  • the following describes the solution in which the terminal device requests the first reference clock information through MSG1 or MSG3 with reference to specific examples.
  • the terminal device uses a specific PRACH resource (that is, the first PRACH resource) to send MSG1 to indicate a request for specific reference clock information (that is, the first reference clock information).
  • a specific PRACH resource that is, the first PRACH resource
  • MSG1 that is, the first reference clock information
  • Step 0 The base station sends configuration information of the first PRACH resource to the terminal device.
  • the base station configures the terminal device with the configuration information of the first PRACH resource for the terminal device to request the first reference clock information.
  • the configuration information of the first PRACH resource includes at least one of the following: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information.
  • the first PRACH resource may also include a specific preamble resource.
  • the spatial resource information such as beam information (SSB information), spatial hierarchical information, etc.
  • the frequency domain resource information may be specific physical resource block (Physical Resource Block, PRB) information, or specific bandwidth part (Band Width Part, BWP) information.
  • the time domain resource information includes designated time slot resources or symbol resources.
  • Step 1 The terminal device uses the first PRACH resource to send MSG1.
  • the terminal device uses the first PRACH resource configured in step 0 to initiate a random access process, namely Send MSG1.
  • Step 2 The base station sends the first reference clock information to the terminal device.
  • the base station After receiving the MSG1 sent by the terminal device, the base station determines that the terminal device needs the first reference clock information according to the first PRACH resource where the MSG1 is located. In this example, the base station can send the first reference clock information through MSG2.
  • the base station if the first reference clock information is included in a specific SIB, the base station starts to transmit the specific SIB. In another optional implementation manner, the base station includes the first reference clock information in the existing SIB for transmission.
  • the terminal device can notify the base station in the same manner. Specifically, the terminal device uses the same first PRACH resource as in step 1 to send MSG1 or the first PRACH resource configured in step 0 to send MSG1. After the base station receives the MSG1 sent by the terminal device, if no other user requests the first reference clock information, it stops sending the first reference clock information. Or, in step 1, after receiving MSG1 sent by the terminal device, the base station starts the first timer, and sends the first reference clock information during the operation of the first timer; if the first timer expires, it stops sending the first reference Clock information.
  • the duration of the first timer may be defined in the standard or bound with the first PRACH resource in step 0.
  • the terminal device carries in the MSG3 instruction information for requesting the network device to send the first reference clock information (ie, the first instruction information) to instruct to request specific reference clock information (ie, the first reference clock information).
  • the first reference clock information ie, the first instruction information
  • specific reference clock information ie, the first reference clock information
  • Step 1 The terminal device sends MSG1 to the base station.
  • Step 2 The base station sends MSG2 to the terminal equipment.
  • Step 3 The terminal device sends MSG3 to the base station.
  • the MSG3 carries first indication information, and the first indication information is used to instruct to request the base station to send the first reference clock information.
  • the first indication information refers to Table 4 below in the figure.
  • the content of the "Requested-granularity" line in Table 4 represents the first indication information shown.
  • the optional parameters of "Requested-granularity” are not limited to ⁇ 10ms, 10ns ⁇ in Table 4, but can also be ⁇ normal, finer ⁇ , optionally, the synchronization accuracy corresponding to normal is 10ms, and the synchronization accuracy corresponding to finisher is 10ns.
  • Step 4. The base station sends MSG4 to the terminal device.
  • the base station After receiving the MSG3 sent by the terminal device, the base station determines that the terminal device needs the first reference clock information according to the first indication information in the MSG3. In this example, the base station can send the first reference clock information through MSG4.
  • the terminal device can notify the base station in the same manner. Specifically, after the terminal device uses the first indication information in the aforementioned MSG3 to instruct the base station to receive the MSG3 of the terminal device, if no other users request the first reference clock information, the base station stops sending the first reference clock information. Alternatively, the terminal device carries instruction information (ie, second instruction information) for instructing the base station to stop sending the first reference clock information or switch to other reference clock information in the MSG3, thereby triggering the base station to stop sending the first reference clock information. Or, when the terminal device sends MSG3 to request the base station to send the first reference clock information, the MSG3 carries the duration information of the first timer.
  • instruction information ie, second instruction information
  • the base station After receiving the MSG3, the base station starts the first timer, and sends the first timer during the operation of the first timer.
  • a reference clock information if the first timer expires, stop sending the first reference clock information.
  • the base station may use a value predefined in the standard as the duration information of the first timer.
  • the solution in this example can also be adapted to scenarios where the terminal device is in a connected state. Specifically, the terminal device requests or stops sending the first reference clock information by sending a dedicated RRC message or MAC message to the base station.
  • FIG. 6 is a schematic diagram 1 of the structural composition of an apparatus for determining a reference clock provided by an embodiment of the application, which is applied to a network device.
  • the apparatus for determining a reference clock includes:
  • the receiving unit 601 is configured to receive a first request message sent by a terminal device, where the first request message is used to request the network device to send first reference clock information;
  • the sending unit 602 is configured to send the first reference clock information to the terminal device.
  • the first request message is MSG1.
  • the receiving unit 601 is configured to receive MSG1 sent by the terminal device on a first PRACH resource, where the first PRACH resource has an association relationship with the first reference clock information.
  • the sending unit 602 is further configured to send first configuration information to the terminal device, where the first configuration information is used to determine the configuration of the first PRACH resource.
  • the first configuration information includes at least one of the following: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information.
  • the sending unit 602 stops sending the first PRACH resource to the terminal device.
  • a reference clock information if the receiving unit 601 receives the MSG1 sent by the terminal device on the first PRACH resource again, the sending unit 602 stops sending the first PRACH resource to the terminal device.
  • the receiving unit 601 After the receiving unit 601 receives the MSG1 sent by the terminal device on the first PRACH resource, it starts a first timer;
  • the sending unit 602 sends the first reference clock information to the terminal device during the operation of the first timer; if the first timer expires, it stops sending the first reference clock information to the terminal device. Reference clock information.
  • the duration of the first timer is predefined; or,
  • the duration of the first timer is associated with the first PRACH resource.
  • the first request message is an MSG3 or a dedicated RRC message or a MAC message.
  • the receiving unit 601 is configured to receive a first request message sent by the terminal device, where the first request message carries first indication information, and the first indication information is used to indicate The network device sends the first reference clock information.
  • the receiving unit 601 receives the first request message sent by the terminal device again, the first request message carries second indication information, and the second indication information is used to indicate If the network device stops sending the first reference clock information or instructs the network device to switch from sending the first reference clock information to sending the second reference clock information, the sending unit 602 stops sending all the information to the terminal device.
  • the first reference clock information if the receiving unit 601 receives the first request message sent by the terminal device again, the first request message carries second indication information, and the second indication information is used to indicate If the network device stops sending the first reference clock information or instructs the network device to switch from sending the first reference clock information to sending the second reference clock information, the sending unit 602 stops sending all the information to the terminal device.
  • the first reference clock information if the receiving unit 601 receives the first request message sent by the terminal device again, the first request message carries second indication information, and the second indication information is used to indicate If the network device stops sending the first reference clock information or instructs the network device to switch from sending the first reference clock information to
  • the sending unit 602 stops sending The terminal device sends the first reference clock information.
  • the receiving unit 601 After the receiving unit 601 receives the first request message sent by the terminal device, it starts a second timer;
  • the sending unit 602 sends the first reference clock information to the terminal device during the operation of the second timer; if the second timer expires, it stops sending the first reference clock to the terminal device. Reference clock information.
  • the duration of the second timer is predefined; or,
  • the duration of the second timer is carried in the first request message.
  • the sending unit 602 is configured to send a first SIB to the terminal device, where the first SIB carries the first reference clock information.
  • the first reference clock information includes at least one of the following: clock information corresponding to TSN, clock information corresponding to TCS, and high-precision clock information.
  • FIG. 7 is a second structural diagram of the apparatus for determining a reference clock according to an embodiment of the application, which is applied to a terminal device. As shown in FIG. 7, the apparatus for determining a reference clock includes:
  • the sending unit 701 is configured to send a first request message to a network device, where the first request message is used to request the network device to send first reference clock information;
  • the receiving unit 702 is configured to receive the first reference clock information sent by the network device.
  • the first request message is MSG1.
  • the sending unit 701 is configured to send MSG1 to the network device on a first PRACH resource, and the first PRACH resource has an association relationship with the first reference clock information.
  • the receiving unit 702 is further configured to receive first configuration information sent by the network device, where the first configuration information is used to determine the configuration of the first PRACH resource.
  • the first configuration information includes at least one of the following: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information.
  • the first request message is an MSG3 or a dedicated RRC message or a MAC message.
  • the sending unit 701 is configured to send a first request message to the network device, where the first request message carries first indication information, and the first indication information is used to indicate the The network device sends the first reference clock information.
  • the receiving unit 702 is configured to receive a first SIB sent by the network device, where the first SIB carries the first reference clock information.
  • the first reference clock information includes at least one of the following: clock information corresponding to TSN, clock information corresponding to TCS, and high-precision clock information.
  • FIG. 8 is a schematic structural diagram of a communication device 800 provided by an embodiment of the present application.
  • the communication device may be a terminal device or a network device.
  • the communication device 800 shown in FIG. 8 includes a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 800 may further include a memory 820.
  • the processor 810 may call and run a computer program from the memory 820 to implement the method in the embodiment of the present application.
  • the memory 820 may be a separate device independent of the processor 810, or may be integrated in the processor 810.
  • the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 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 830 may include a transmitter and a receiver.
  • the transceiver 830 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 800 may specifically be a network device in an embodiment of the present application, and the communication device 800 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here. .
  • the communication device 800 may specifically be a mobile terminal/terminal device of an embodiment of the application, and the communication device 800 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the application.
  • I won’t repeat it here.
  • FIG. 9 is a schematic structural diagram of a chip of an embodiment of the present application.
  • the chip 900 shown in FIG. 9 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 application.
  • the chip 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 application.
  • the memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.
  • the chip 900 may further include an input interface 930.
  • the processor 910 can control the input interface 930 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 900 may further include an output interface 940.
  • the processor 910 can control the output interface 940 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 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 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 device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip.
  • FIG. 10 is a schematic block diagram of a communication system 1000 according to an embodiment of the present application. As shown in FIG. 10, the communication system 1000 includes a terminal device 1010 and a network device 1020.
  • the terminal device 1010 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 1020 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, details are not repeated here. .
  • the processor of the embodiment of the present application 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 application 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 the embodiments of the present application can 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 embodiments of the present application 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 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 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. That is to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiment 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 embodiment of the present application.
  • 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 application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application , For the sake of brevity, I won’t repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment 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.
  • 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.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For the sake of brevity, I will not repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, 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 application 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 application 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 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参考时钟的确定方法及装置、终端设备、网络设备,该方法包括:网络设备接收终端设备发送的第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息;所述网络设备向所述终端设备发送所述第一参考时钟信息。

Description

一种参考时钟的确定方法及装置、终端设备、网络设备 技术领域
本申请实施例涉及移动通信技术领域,具体涉及一种参考时钟的确定方法及装置、终端设备、网络设备。
背景技术
高精度的参考时钟信息可以实现终端设备与网络侧之间在时间上的高度同步,这对于时间敏感的业务至关重要。目前,高精度的参考时钟信息可以由网络侧通过广播的方式发送给终端设备,然而,网络侧不会根据终端设备的需求对高精度的参考时钟信息进行适应性的广播,导致这些高精度的参考时钟信息会占用较多的空口资源。
发明内容
本申请实施例提供一种参考时钟的确定方法及装置、终端设备、网络设备。
本申请实施例提供的参考时钟的确定方法,包括:
网络设备接收终端设备发送的第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息;
所述网络设备向所述终端设备发送所述第一参考时钟信息。
本申请实施例提供的参考时钟的确定方法,包括:
终端设备向网络设备发送第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息;
所述终端设备接收所述网络设备发送的所述第一参考时钟信息。
本申请实施例提供的参考时钟的确定装置,包括:
接收单元,用于接收终端设备发送的第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息;
发送单元,用于向所述终端设备发送所述第一参考时钟信息。
本申请实施例提供的参考时钟的确定装置,包括:
发送单元,用于向网络设备发送第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息;
接收单元,用于接收所述网络设备发送的所述第一参考时钟信息。
本申请实施例提供的终端设备,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,执行上述的参考时钟的确定方法。
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,执行上述的参考时钟的确定方法。
本申请实施例提供的芯片,用于实现上述的参考时钟的确定方法。
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参考时钟的确定方法。
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参考时钟的确定方法。
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参考时钟的确定方法。
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参考时钟的确定方法。
通过上述技术方案,网络设备可以基于终端设备的请求确定是否发送第一参考时钟信息(即高精度的参考时钟信息),从而可以避免在没有终端设备支持或者使用高精度的参考时钟相关的特性时,不广播所述第一参考时钟信息,节省了空口资源。
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是本申请实施例提供的5G系统作为TSN桥的网络架构图;
图3是本申请实施例提供的时间同步精度的示意图;
图4为本申请实施例提供的参考时钟的确定方法的流程示意图;
图5-1是本申请实施例提供的示例一的流程图;
图5-2是本申请实施例提供的示例二的流程图;
图6为本申请实施例提供的参考时钟的确定装置的结构组成示意图一;
图7为本申请实施例提供的参考时钟的确定装置的结构组成示意图二;
图8是本申请实施例提供的一种通信设备示意性结构图;
图9是本申请实施例的芯片的示意性结构图;
图10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: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)、系统、5G通信系统或未来的通信系统等。
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通信系统中的网络设备等。
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通信系统或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。
为便于理解本申请实施例的技术方案,以下对本申请实施例相关的技术方案进行说明。
5G工业物联网(Industrial Internet of Things,IIoT)支持工业自动化(Factory Automation),传输自动化(Transport Automation),智能电力(Intelligent Electrical Power)等业务在5G系统中传输。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(Time Sensitive Networking,TSN)或TSC的概念。如图2所示,在TSN中,5G系统(5G System,5GS)将作为TSN桥(TSN bridge)为TSN网络和业务提供服务。基于此,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是符合时间要求的。
Figure PCTCN2019111313-appb-000001
TSN的时间同步精度
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。参照图3,从空口上看,时间同步精度需求与网络通知的时间同步精度(即精度)和终端设备侧的时间同步精度误差(即Δ)相关,终端设备侧的时间同步精度误差与很多因素相关,如传播损耗,设备限制等。
网络侧通知的时间同步信息和时间同步精度信息包含在时间参考信息单元(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。例如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。
在通信系统中,通常采用时间提前量(Timing Advance,TA)进行传播时延的补偿。终端设备在空闲态(或非激活态)和连接态有不同的TA获取方式。在终端设备处于空闲态或非激活态时,不维护与网络侧的时间同步,因此,终端设备需要通过随机接入过程在初始接入过程中获取TA,进而通过TA进行同步校准。而在连接态,终端设备根据网络发送的TA命令(TA command,TAC)获取TA,进而通过TA进行同步校准。
基于TAC或RA过程,上行帧传输提前量为(N TA+N TAoffset)×T c。其中,N TA与TAC或随机接入响应中携带的指示的TAC相关。TAC中给出的是定时提前量调整的索引信息。对由随机接入响应中携带TAC的场景来说,N TA=T A·16·64/2 μ,其中,T A=TAC,其取值为:0,1,2,...,3846。对由专用的TAC MAC CE指示TAC的场景来说,N TA_new=N TA_old+(T A=31)·16·64/2 μ,其中,T A=TAC,其取值为:0,1,2,...,63。
另外,T c为物理层最小时间单位,T c=1/(Δf max·N f),其中,Δf max=480·10 3Hz,N f=4096。N TAoffset的取值见下表1。
Figure PCTCN2019111313-appb-000002
表1
RAN4对TA调整的精度进行了要求,其最低要求见下表2。
Figure PCTCN2019111313-appb-000003
表2
IIoT有两种可能的传播时延补偿方式,一种是由网络进行补偿,一种是由终端设备进行补偿。对于网络进行补偿的方法,终端设备接收到的时间同步信息是包含了网络补偿了传播时延之后的时间同步信息。需要说明的是,本申请实施例中的时间同步信息也可以称为参考时钟信息。高精度的参考时钟信息占用较多的空口资源,当一个小区中没有终端设备支持或者使用高精度的时钟相关的特性时,网络侧可以考虑不广播此参考时钟信息。为此,提出了本申请实施例的以下技术方案,本申请实施例的技术方案使得网络设备可以基于终端设备的请求确定是否发送高精度的参考时钟信息。
图4为本申请实施例提供的参考时钟的确定方法的流程示意图,如图4所示,所述参考时钟的确定方法包括以下步骤:
步骤401:终端设备向网络设备发送第一请求消息,网络设备接收终端设备发送的第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息。
本申请实施例中,所述网络设备可以是基站,例如gNB。
本申请实施例中,所述终端设备为了获得第一参考时钟信息,向网络设备发送第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息。
在一可选实施方式中,所述第一参考时钟信息包括以下至少之一:TSN对应的时钟信息、TCS对应的时钟信息、高精度时钟信息(如10ns精度的时钟信息)。需要说明的是,本申请实施例中涉及到的参考时钟信息也可以称为时间同步信息。
步骤402:所述网络设备向所述终端设备发送所述第一参考时钟信息,所述终端设备接收所述网络设备发送的所述第一参考时钟信息。
本申请实施例中,所述网络设备对于第一参考时钟信息的发送可以采用通过系统广播消息的方式来发送,具体地,所述网络设备向所述终端设备发送第一系统信息块(System Information Block,SIB),所述第一SIB携带所述第一参考时钟信息。
在一实施方式中,所述第一SIB为现有SIB,在现有的SIB中携带所述第一参考时钟信息,从而实现对所述第一参考时钟信息的广播。在另一可选实施方式中,所述第一SIB为新定义的SIB,该新定义的SIB专门用于发送所述第一参考时钟信息。
在本申请一可选实施方式中,所述第一参考时钟信息的内容可以参照图下表3。
Figure PCTCN2019111313-appb-000004
表3
上述方案实现了网络设备基于终端设备的请求发送第一参考时钟信息,这种发送方式结合了on-demand SI的发送方式。
本申请实施例中,所述第一请求消息为随机接入过程中的MSG1或MSG3。以下结合MSG1和MSG3对本申请实施例的技术方案进行详细说明。
Figure PCTCN2019111313-appb-000005
所述第一请求消息为消息MSG1。
本申请实施例中,所述终端设备在第一PRACH资源上向所述网络设备发送MSG1,所述网络设备接收所述终端设备在第一物理随机接入信道(Physical Random Access Channel,PRACH)资源上发送的MSG1,所述第一PRACH资源与所述第一参考时钟信息具有关联关系。
这里,所述第一PRACH资源与所述第一参考时钟信息具有关联关系是指:所述第一PRACH资源是专门用于请求所述第一参考时钟信息的资源,或者说,所述第一PRACH资源是专门用于发送请求所述第一参考时钟信息的MSG1的资源。可以理解,所述第一PRACH资源是用于请求所述第一参考时钟信息的特定的PRACH资源。
在一可选实施方式中,所述第一PRACH资源由所述网络设备配置,具体地,所述网络设备向所述终端设备发送第一配置信息,所述终端设备接收所述网络设备发送的第一配置信息,所述第一配置信息用于确定所述第一PRACH资源的配置。
进一步,所述第一配置信息包括以下至少之一:频域资源信息、时域资源信息、码域资源信息、空域资源信息。
本申请实施例中,所述网络设备在某些触发方式下,可以停止向所述终端设备发送所述第一参考时钟信息。以下具体描述。
1)方式一
所述网络设备再次接收到所述终端设备在所述第一PRACH资源上发送的MSG1后,停止向所述终端设备发送所述第一参考时钟信息。
2)方式二
所述网络设备接收到所述终端设备在所述第一PRACH资源上发送的MSG1后,启动第一定时器;所述网络设备在所述第一定时器运行期间,向所述终端设备发送所述第一参考时钟信息;若所述第一定时器超时,则所述网络设备停止向所述终端设备发送所述第一参考时钟信息。
在一可选实施方式中,所述第一定时器的时长为预定义的;或者,所述第一定时器的时长为与所述第一PRACH资源具有关联关系。
Figure PCTCN2019111313-appb-000006
所述第一请求消息为MSG3或者专用无线资源控制(Radio Resource Control,RRC)消息或者媒体接入控制(Media Access Control,MAC)消息。
本申请实施例中,所述终端设备向所述网络设备发送第一请求消息,所述网络设备接收所述终端设备发送的第一请求消息,所述第一请求消息携带第一指示信息,所述第一指示信息用于指示所述网络设备发送所述第一参考时钟信息。
本申请实施例中,所述网络设备在某些触发方式下,可以停止向所述终端设备发送所述第一参考时钟信息。以下具体描述。
1)所述网络设备再次接收到所述终端设备发送的第一请求消息,所述第一请求消息携带第二指示信息,所述第二指示信息用于指示所述网络设备停止发送所述第一参考时钟信息或者指示所述网络设备从发送所述第一参考时钟信息切换到发送第二参考时钟信息;所述网络设备停止向所述终端设备发送所述第一参考时钟信息。
2)所述网络设备再次接收到所述终端设备发送的第一请求消息,所述第一请求消息携带所述第一指示信息;所述网络设备停止向所述终端设备发送所述第一参考时钟信息。
3)所述网络设备接收到所述终端设备发送的第一请求消息后,启动第二定时器;所述网络设备在所述第二定时器运行期间,向所述终端设备发送所述第一参考时钟信息;若所述第二定时器超时,则所述网络设备停止向所述终端设备发送所述第一参考时钟信息。
在一可选实施方式中,所述第二定时器的时长为预定义的;或者,所述第二定时器的时长携带在所述第一请求消息中。
以下结合具体示例对终端设备通过MSG1或MSG3请求第一参考时钟信息的方案进行描述。
示例一
本示例中,终端设备采用特定的PRACH资源(即第一PRACH资源)发送MSG1,来指示请求特定的参考时钟信息(即第一参考时钟信息)。参照图5-1所示,包括以下流程:
步骤0,基站向终端设备发送第一PRACH资源的配置信息。
具体地,基站为终端设备配置用于该终端设备请求第一参考时钟信息的第一PRACH资源的配置信息。这里,第一PRACH资源的配置信息包括以下至少之一:频域资源信息、时域资源信息、码域资源信息、空域资源信息。可选地,第一PRACH资源也可以包括特定的前导码资源。其中,空域资源信息,例如波束信息(SSB信息),空间层级信息等。频域资源信息可以为特定的物理资源块(Physical Resource Block,PRB)信息,或者特定带宽部分(Band Width Part,BWP)信息。时域资源信息包含指定的时隙资源或者符号资源等。
步骤1,终端设备采用第一PRACH资源发送MSG1。
具体地,如果支持或者想使用第一参考时钟信息相关特性的终端设备发现当前小区中没有广播第一参考时钟信息,则终端设备采用步骤0中配置的第一PRACH资源发起随机接入过程,即发送MSG1。
步骤2,基站向终端设备发送第一参考时钟信息。
具体地,基站接收到终端设备发送的MSG1之后,根据该MSG1所在的第一PRACH资源确定终端设备需要第一参考时钟信息。本示例中,基站可以通过MSG2发送第一参考时钟信息。
在一可选实施方式中,如果第一参考时钟信息包含在特定的SIB中,则基站开始发送此特定的SIB。在另一可选实施方式中,基站将第一参考时钟信息包含在现有SIB中进行发送。
进一步,如果终端设备不再需要第一参考时钟信息,可以采用相同的方式告知基站。具体地,终端设备采用与前述步骤1中相同的第一PRACH资源发送MSG1或者采用步骤0中配置的第一PRACH资源发送MSG1。基站接收到终端设备发送的MSG1之后,如果没有其他用户请求第一参考时钟信息,则停止发送第一参考时钟信息。或者,在步骤1中,基站接收到终端设备发送的MSG1之后,启动第一定时器,在第一定时器运行期间发送第一参考时钟信息;若第一定时器超时,则停止发送第一参考时钟信息。这里,第一定时器的时长可以在标准中定义或者在步骤0中与第一PRACH资源进行绑定。
示例二
本示例中,终端设备在MSG3中携带请求网络设备发送第一参考时钟信息的指示信息(即第一指示信息),来指示请求特定的参考时钟信息(即第一参考时钟信息)。参照图5-2所示,包括以下流程:
步骤1,终端设备向基站发送MSG1。
步骤2,基站向终端设备发送MSG2。
步骤3,终端设备向基站发送MSG3。
这里,MSG3中携带第一指示信息,所述第一指示信息用于指示请求基站发送第一参考时钟信息。具体地,第一指示信息参照图下表4。
Figure PCTCN2019111313-appb-000007
表4
表4中的“Requested-granularity”一行的内容即代表了所示第一指示信息,“Requested-granularity”的可选参数不局限于表4中的{10ms,10ns},还可以是{normal,finer},可选地,normal对应的同步精度为10ms,finer对应的同步精度为10ns。
步骤4,基站向终端设备发送MSG4。
具体地,基站接收到终端设备发送的MSG3之后,根据该MSG3中的第一指示信息确定终端设备需要第一参考时钟信息。本示例中,基站可以通过MSG4发送第一参考时钟信息。
进一步,如果终端设备不再需要第一参考时钟信息,可以采用相同的方式告知基站。具体地,终端设备采用与前述MSG3中的第一指示信息指示基站接收到终端设备的MSG3之后,如果没有其他的用户请求第一参考时钟信息,则基站停止发送第一参考时钟信息。或者,终端设备在MSG3中携带用于指示基站停止发送第一参考时钟信息或者切换到其他参考时钟信息的指示信息(即第二指示信息),从而触发基站停止发送第一参考时钟信息。或者,终端设备发送MSG3以请求基站发送第一参考时钟信息时,在MSG3中携带第一定时器的时长信息,基站接收到MSG3之后,启动第一定时器,在第一定时器运行期间发送第一参考时钟信息;若第一定时器超时,则停止发送第一参考时钟信息。可选地,如果终端设备没有在MSG3中指示第一定时器的时长信息,则基站可以采用标准中预定义的取值作为第一定时器的时长信息。
需要说明的是,本示例的方案也可以适应于终端设备处于连接态的场景,具体地,终端设备通过向基站发送专用RRC消息或者MAC消息来请求或者停止第一参考时钟信息的发送。
图6为本申请实施例提供的参考时钟的确定装置的结构组成示意图一,应用于网络设备,如图6所示,所述参考时钟的确定装置包括:
接收单元601,用于接收终端设备发送的第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息;
发送单元602,用于向所述终端设备发送所述第一参考时钟信息。
在一可选实施方式中,所述第一请求消息为MSG1。
在一可选实施方式中,所述接收单元601,用于接收所述终端设备在第一PRACH资源上发送的MSG1,所述第一PRACH资源与所述第一参考时钟信息具有关联关系。
在一可选实施方式中,所述发送单元602,还用于向所述终端设备发送第一配置 信息,所述第一配置信息用于确定所述第一PRACH资源的配置。
在一可选实施方式中,所述第一配置信息包括以下至少之一:频域资源信息、时域资源信息、码域资源信息、空域资源信息。
在一可选实施方式中,若所述接收单元601再次接收到所述终端设备在所述第一PRACH资源上发送的MSG1后,则所述发送单元602停止向所述终端设备发送所述第一参考时钟信息。
在一可选实施方式中,所述接收单元601接收到所述终端设备在所述第一PRACH资源上发送的MSG1后,启动第一定时器;
所述发送单元602在所述第一定时器运行期间,向所述终端设备发送所述第一参考时钟信息;若所述第一定时器超时,则停止向所述终端设备发送所述第一参考时钟信息。
在一可选实施方式中,所述第一定时器的时长为预定义的;或者,
所述第一定时器的时长为与所述第一PRACH资源具有关联关系。
在一可选实施方式中,所述第一请求消息为MSG3或者专用RRC消息或者MAC消息。
在一可选实施方式中,所述接收单元601,用于接收所述终端设备发送的第一请求消息,所述第一请求消息携带第一指示信息,所述第一指示信息用于指示所述网络设备发送所述第一参考时钟信息。
在一可选实施方式中,若所述接收单元601再次接收到所述终端设备发送的第一请求消息,所述第一请求消息携带第二指示信息,所述第二指示信息用于指示所述网络设备停止发送所述第一参考时钟信息或者指示所述网络设备从发送所述第一参考时钟信息切换到发送第二参考时钟信息,则所述发送单元602停止向所述终端设备发送所述第一参考时钟信息。
在一可选实施方式中,若所述接收单元601再次接收到所述终端设备发送的第一请求消息,所述第一请求消息携带所述第一指示信息,则所述发送单元602停止向所述终端设备发送所述第一参考时钟信息。
在一可选实施方式中,所述接收单元601接收到所述终端设备发送的第一请求消息后,启动第二定时器;
所述发送单元602在所述第二定时器运行期间,向所述终端设备发送所述第一参考时钟信息;若所述第二定时器超时,则停止向所述终端设备发送所述第一参考时钟信息。
在一可选实施方式中,所述第二定时器的时长为预定义的;或者,
所述第二定时器的时长携带在所述第一请求消息中。
在一可选实施方式中,所述发送单元602,用于向所述终端设备发送第一SIB,所述第一SIB携带所述第一参考时钟信息。
在一可选实施方式中,所述第一参考时钟信息包括以下至少之一:TSN对应的时钟信息、TCS对应的时钟信息、高精度时钟信息。
本领域技术人员应当理解,本申请实施例的上述参考时钟的确定装置的相关描述可以参照本申请实施例的参考时钟的确定方法的相关描述进行理解。
图7为本申请实施例提供的参考时钟的确定装置的结构组成示意图二,应用于终端设备,如图7所示,所述参考时钟的确定装置包括:
发送单元701,用于向网络设备发送第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息;
接收单元702,用于接收所述网络设备发送的所述第一参考时钟信息。
在一可选实施方式中,所述第一请求消息为MSG1。
在一可选实施方式中,所述发送单元701,用于在第一PRACH资源上向所述网络设备发送MSG1,所述第一PRACH资源与所述第一参考时钟信息具有关联关系。
在一可选实施方式中,所述接收单元702,还用于接收所述网络设备发送的第一配置信息,所述第一配置信息用于确定所述第一PRACH资源的配置。
在一可选实施方式中,所述第一配置信息包括以下至少之一:频域资源信息、时域资源信息、码域资源信息、空域资源信息。
在一可选实施方式中,所述第一请求消息为MSG3或者专用RRC消息或者MAC消息。
在一可选实施方式中,所述发送单元701,用于向所述网络设备发送第一请求消息,所述第一请求消息携带第一指示信息,所述第一指示信息用于指示所述网络设备发送所述第一参考时钟信息。
在一可选实施方式中,所述接收单元702,用于接收所述网络设备发送的第一SIB,所述第一SIB携带所述第一参考时钟信息。
在一可选实施方式中,所述第一参考时钟信息包括以下至少之一:TSN对应的时钟信息、TCS对应的时钟信息、高精度时钟信息。
本领域技术人员应当理解,本申请实施例的上述参考时钟的确定装置的相关描述可以参照本申请实施例的参考时钟的确定方法的相关描述进行理解。
图8是本申请实施例提供的一种通信设备800示意性结构图。该通信设备可以是终端设备,也可以是网络设备,图8所示的通信设备800包括处理器810,处理器810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8所示,通信设备800还可以包括存储器820。其中,处理器810可以从存储器820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820可以是独立于处理器810的一个单独的器件,也可以集成在处理器810中。
可选地,如图8所示,通信设备800还可以包括收发器830,处理器810可以控制该收发器830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830可以包括发射机和接收机。收发器830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800具体可为本申请实施例的网络设备,并且该通信设备800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800具体可为本申请实施例的移动终端/终端设备,并且该通信设备800可以实现本申请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是本申请实施例的芯片的示意性结构图。图9所示的芯片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,以实现本申请实施例中的方法。
可选地,如图9所示,芯片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,以实现本申请实施例中的方法。
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,该芯片900还可以包括输入接口930。其中,处理器910可以控制该输入接口930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900还可以包括输出接口940。其中,处理器910可以控制该输出接口940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/终端设备,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/终端设备实现的相应流程,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10是本申请实施例提供的一种通信系统1000的示意性框图。如图10所示,该通信系统1000包括终端设备1010和网络设备1020。
其中,该终端设备1010可以用于实现上述方法中由终端设备实现的相应的功能,以及该网络设备1020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,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。
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。
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。
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 (60)

  1. 一种参考时钟的确定方法,所述方法包括:
    网络设备接收终端设备发送的第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息;
    所述网络设备向所述终端设备发送所述第一参考时钟信息。
  2. 根据权利要求1所述的方法,其中,所述第一请求消息为消息MSG1。
  3. 根据权利要求2所述的方法,其中,所述网络设备接收终端设备发送的第一请求消息,包括:
    所述网络设备接收所述终端设备在第一物理随机接入信道PRACH资源上发送的MSG1,所述第一PRACH资源与所述第一参考时钟信息具有关联关系。
  4. 根据权利要求3所述的方法,其中,所述方法还包括:
    所述网络设备向所述终端设备发送第一配置信息,所述第一配置信息用于确定所述第一PRACH资源的配置。
  5. 根据权利要求4所述的方法,其中,所述第一配置信息包括以下至少之一:频域资源信息、时域资源信息、码域资源信息、空域资源信息。
  6. 根据权利要求3至5中任一项所述的方法,其中,所述方法还包括:
    所述网络设备再次接收到所述终端设备在所述第一PRACH资源上发送的MSG1后,停止向所述终端设备发送所述第一参考时钟信息。
  7. 根据权利要求3至5中任一项所述的方法,其中,所述方法还包括:
    所述网络设备接收到所述终端设备在所述第一PRACH资源上发送的MSG1后,启动第一定时器;
    所述网络设备在所述第一定时器运行期间,向所述终端设备发送所述第一参考时钟信息;若所述第一定时器超时,则所述网络设备停止向所述终端设备发送所述第一参考时钟信息。
  8. 根据权利要求7所述的方法,其中,
    所述第一定时器的时长为预定义的;或者,
    所述第一定时器的时长为与所述第一PRACH资源具有关联关系。
  9. 根据权利要求1所述的方法,其中,所述第一请求消息为MSG3或者专用无线资源控制RRC消息或者媒体接入控制MAC消息。
  10. 根据权利要求9所述的方法,其中,所述网络设备接收终端设备发送的第一请求消息,包括:
    所述网络设备接收所述终端设备发送的第一请求消息,所述第一请求消息携带第一指示信息,所述第一指示信息用于指示所述网络设备发送所述第一参考时钟信息。
  11. 根据权利要求10所述的方法,其中,所述方法还包括:
    所述网络设备再次接收到所述终端设备发送的第一请求消息,所述第一请求消息携带第二指示信息,所述第二指示信息用于指示所述网络设备停止发送所述第一参考时钟信息或者指示所述网络设备从发送所述第一参考时钟信息切换到发送第二参考时钟信息;
    所述网络设备停止向所述终端设备发送所述第一参考时钟信息。
  12. 根据权利要求10所述的方法,其中,所述方法还包括:
    所述网络设备再次接收到所述终端设备发送的第一请求消息,所述第一请求消息携带所述第一指示信息;
    所述网络设备停止向所述终端设备发送所述第一参考时钟信息。
  13. 根据权利要求10所述的方法,其中,所述方法还包括:
    所述网络设备接收到所述终端设备发送的第一请求消息后,启动第二定时器;
    所述网络设备在所述第二定时器运行期间,向所述终端设备发送所述第一参考时钟信息;若所述第二定时器超时,则所述网络设备停止向所述终端设备发送所述第一参考时钟信息。
  14. 根据权利要求13所述的方法,其中,
    所述第二定时器的时长为预定义的;或者,
    所述第二定时器的时长携带在所述第一请求消息中。
  15. 根据权利要求1至14中任一项所述的方法,其中,所述网络设备向所述终端设备发送所述第一参考时钟信息,包括:
    所述网络设备向所述终端设备发送第一SIB,所述第一SIB携带所述第一参考时钟信息。
  16. 根据权利要求1至15中任一项所述的方法,其中,所述第一参考时钟信息包括以下至少之一:TSN对应的时钟信息、TCS对应的时钟信息、高精度时钟信息。
  17. 一种参考时钟的确定方法,所述方法包括:
    终端设备向网络设备发送第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息;
    所述终端设备接收所述网络设备发送的所述第一参考时钟信息。
  18. 根据权利要求17所述的方法,其中,所述第一请求消息为MSG1。
  19. 根据权利要求18所述的方法,其中,所述终端设备向网络设备发送第一请求消息,包括:
    所述终端设备在第一PRACH资源上向所述网络设备发送MSG1,所述第一PRACH资源与所述第一参考时钟信息具有关联关系。
  20. 根据权利要求19所述的方法,其中,所述方法还包括:
    所述终端设备接收所述网络设备发送的第一配置信息,所述第一配置信息用于确定所述第一PRACH资源的配置。
  21. 根据权利要求20所述的方法,其中,所述第一配置信息包括以下至少之一:频域资源信息、时域资源信息、码域资源信息、空域资源信息。
  22. 根据权利要求17所述的方法,其中,所述第一请求消息为MSG3或者专用RRC消息或者MAC消息。
  23. 根据权利要求22所述的方法,其中,所述终端设备向网络设备发送第一请求消息,包括:
    所述终端设备向所述网络设备发送第一请求消息,所述第一请求消息携带第一指示信息,所述第一指示信息用于指示所述网络设备发送所述第一参考时钟信息。
  24. 根据权利要求17至23中任一项所述的方法,其中,所述终端设备接收所述网络设备发送的所述第一参考时钟信息,包括:
    所述终端设备接收所述网络设备发送的第一SIB,所述第一SIB携带所述第一参考时钟信息。
  25. 根据权利要求17至24中任一项所述的方法,其中,所述第一参考时钟信息包括以下至少之一:TSN对应的时钟信息、TCS对应的时钟信息、高精度时钟信息。
  26. 一种参考时钟的确定装置,所述装置包括:
    接收单元,用于接收终端设备发送的第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息;
    发送单元,用于向所述终端设备发送所述第一参考时钟信息。
  27. 根据权利要求26所述的装置,其中,所述第一请求消息为MSG1。
  28. 根据权利要求27所述的装置,其中,所述接收单元,用于接收所述终端设备在第一PRACH资源上发送的MSG1,所述第一PRACH资源与所述第一参考时钟信息具有关联关系。
  29. 根据权利要求28所述的装置,其中,所述发送单元,还用于向所述终端设备发送第一配置信息,所述第一配置信息用于确定所述第一PRACH资源的配置。
  30. 根据权利要求29所述的装置,其中,所述第一配置信息包括以下至少之一:频域资源信息、时域资源信息、码域资源信息、空域资源信息。
  31. 根据权利要求28至30中任一项所述的装置,其中,若所述接收单元再次接收到所述终端设备在所述第一PRACH资源上发送的MSG1后,则所述发送单元停止向所述终端设备发送所述第一参考时钟信息。
  32. 根据权利要求28至30中任一项所述的装置,其中,
    所述接收单元接收到所述终端设备在所述第一PRACH资源上发送的MSG1后,启动第一定时器;
    所述发送单元在所述第一定时器运行期间,向所述终端设备发送所述第一参考时钟信息;若所述第一定时器超时,则停止向所述终端设备发送所述第一参考时钟信息。
  33. 根据权利要求32所述的装置,其中,
    所述第一定时器的时长为预定义的;或者,
    所述第一定时器的时长为与所述第一PRACH资源具有关联关系。
  34. 根据权利要求26所述的装置,其中,所述第一请求消息为MSG3或者专用RRC消息或者MAC消息。
  35. 根据权利要求34所述的装置,其中,所述接收单元,用于接收所述终端设备发送的第一请求消息,所述第一请求消息携带第一指示信息,所述第一指示信息用于指示所述网络设备发送所述第一参考时钟信息。
  36. 根据权利要求35所述的装置,其中,若所述接收单元再次接收到所述终端设备发送的第一请求消息,所述第一请求消息携带第二指示信息,所述第二指示信息用于指示所述网络设备停止发送所述第一参考时钟信息或者指示所述网络设备从发送所述第一参考时钟信息切换到发送第二参考时钟信息,则所述发送单元停止向所述终端设备发送所述第一参考时钟信息。
  37. 根据权利要求35所述的装置,其中,若所述接收单元再次接收到所述终端设备发送的第一请求消息,所述第一请求消息携带所述第一指示信息,则所述发送单元停止向所述终端设备发送所述第一参考时钟信息。
  38. 根据权利要求35所述的装置,其中,
    所述接收单元接收到所述终端设备发送的第一请求消息后,启动第二定时器;
    所述发送单元在所述第二定时器运行期间,向所述终端设备发送所述第一参考时钟信息;若所述第二定时器超时,则停止向所述终端设备发送所述第一参考时钟信息。
  39. 根据权利要求38所述的装置,其中,所述第二定时器的时长为预定义的;或者,
    所述第二定时器的时长携带在所述第一请求消息中。
  40. 根据权利要求26至39中任一项所述的装置,其中,所述发送单元,用于向所述终端设备发送第一SIB,所述第一SIB携带所述第一参考时钟信息。
  41. 根据权利要求26至40中任一项所述的装置,其中,所述第一参考时钟信息包括以下至少之一:TSN对应的时钟信息、TCS对应的时钟信息、高精度时钟信息。
  42. 一种参考时钟的确定装置,所述装置包括:
    发送单元,用于向网络设备发送第一请求消息,所述第一请求消息用于请求所述网络设备发送第一参考时钟信息;
    接收单元,用于接收所述网络设备发送的所述第一参考时钟信息。
  43. 根据权利要求42所述的装置,其中,所述第一请求消息为MSG1。
  44. 根据权利要求43所述的装置,其中,所述发送单元,用于在第一PRACH资源上向所述网络设备发送MSG1,所述第一PRACH资源与所述第一参考时钟信息具有关联关系。
  45. 根据权利要求44所述的装置,其中,所述接收单元,还用于接收所述网络设备发送的第一配置信息,所述第一配置信息用于确定所述第一PRACH资源的配置。
  46. 根据权利要求45所述的装置,其中,所述第一配置信息包括以下至少之一:频域资源信息、时域资源信息、码域资源信息、空域资源信息。
  47. 根据权利要求42所述的装置,其中,所述第一请求消息为MSG3或者专用RRC消息或者MAC消息。
  48. 根据权利要求47所述的装置,其中,所述发送单元,用于向所述网络设备发送第一请求消息,所述第一请求消息携带第一指示信息,所述第一指示信息用于指示所述网络设备发送所述第一参考时钟信息。
  49. 根据权利要求42至48中任一项所述的装置,其中,所述接收单元,用于接收所述网络设备发送的第一SIB,所述第一SIB携带所述第一参考时钟信息。
  50. 根据权利要求42至49中任一项所述的装置,其中,所述第一参考时钟信息包括以下至少之一:TSN对应的时钟信息、TCS对应的时钟信息、高精度时钟信息。
  51. 一种终端设备,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16中任一项所述的方法。
  52. 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17至25中任一项所述的方法。
  53. 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16中任一项所述的方法。
  54. 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17至25中任一项所述的方法。
  55. 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16中任一项所述的方法。
  56. 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17至25中任一项所述的方法。
  57. 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16中任一项所述的方法。
  58. 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17至25中任一项所述的方法。
  59. 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16中任一项所述的方法。
  60. 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17至25中任一项所述的方法。
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