WO2023115355A1 - 时钟同步方法及装置 - Google Patents

时钟同步方法及装置 Download PDF

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Publication number
WO2023115355A1
WO2023115355A1 PCT/CN2021/140202 CN2021140202W WO2023115355A1 WO 2023115355 A1 WO2023115355 A1 WO 2023115355A1 CN 2021140202 W CN2021140202 W CN 2021140202W WO 2023115355 A1 WO2023115355 A1 WO 2023115355A1
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WIPO (PCT)
Prior art keywords
system information
information
frame
subframe
terminal device
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Application number
PCT/CN2021/140202
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English (en)
French (fr)
Inventor
杨星
Original Assignee
北京小米移动软件有限公司
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 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2021/140202 priority Critical patent/WO2023115355A1/zh
Priority to CN202180004576.3A priority patent/CN116636262A/zh
Publication of WO2023115355A1 publication Critical patent/WO2023115355A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the present application relates to the technical field of communications, and in particular to a clock synchronization method and device.
  • the terminal can calibrate the clock based on the System Information Block (SIB) carrying auxiliary information broadcast by the base station, so as to perform more accurate GPS (Global Positioning System, Global Positioning System) positioning.
  • SIB System Information Block
  • the terminal is not directly connected to the base station, but communicates with the base station through the relay of another terminal.
  • the terminal not connected to the base station is called a remote (remote) terminal, which provides the relay function
  • the terminal is called a relay terminal, and the remote terminal communicates with the relay terminal through a sidelink (sidelink) unicast.
  • the relay terminal forwards the system information to the remote terminal, the remote terminal cannot determine the system information (System Information, SI) window in which the system information is transmitted, and thus cannot calibrate the clock.
  • SI System Information
  • the embodiment of the first aspect of the present application proposes a clock synchronization method, the method is executed by a remote terminal device, and the method includes:
  • auxiliary information includes sending time information of the system information
  • the sending time information of the system information includes at least one of the following:
  • the frame number of the frame where the system information is sent by the network device
  • the subframe number of the subframe where the system information is sent by the network device
  • the frame number of the frame where the system information window is located, and the system information window is used for the network device to send the system information.
  • the frame number is a system frame number or a directly-connected frame number of a directly-connected frame aligned with the system frame.
  • the subframe number is a system subframe number or a directly connected subframe number of a directly connected subframe aligned with the system subframe.
  • the direct connection frame number is obtained by the relay terminal device according to the system frame number.
  • the system information includes reference information; in response to the frame number being a directly connected frame number or the subframe number being the directly connected subframe number, the reference information is used to indicate the system information The time corresponding to the end boundary of the direct frame in the sending time information; or, the reference information is used to indicate the time corresponding to the end boundary of the system information window in the sending time information of the system information.
  • the method further includes: sending the reference time to a high layer of the remote terminal device.
  • the system information is a system information block SIB9.
  • the embodiment of the second aspect of the present application proposes a clock synchronization method, the method is executed by a relay terminal device, and the method includes:
  • auxiliary information includes sending time information of the system information
  • the system information and sending time information of the system information are used by the remote terminal device to calculate a reference time.
  • the sending time information of the system information includes at least one of the following:
  • the frame number of the frame where the system information is sent by the network device
  • the subframe number of the subframe where the system information is sent by the network device
  • the frame number of the frame where the system information window is located, and the system information window is used for the network device to send the system information.
  • the frame number is a system frame number or a directly-connected frame number of a directly-connected frame aligned with the system frame.
  • the subframe number is a system subframe number or a directly connected subframe number of a directly connected subframe aligned with the system subframe.
  • the direct connection frame number is obtained by the relay terminal device according to the system frame number.
  • the system information includes reference information; in response to the frame number being a directly connected frame number or the subframe number being the directly connected subframe number, the reference information is used to indicate the system information The time corresponding to the end boundary of the direct frame in the sending time information; or, the reference information is used to indicate the time corresponding to the end boundary of the system information window in the sending time information of the system information.
  • the system information is a system information block SIB9.
  • the embodiment of the third aspect of the present application proposes a clock synchronization device, the device is applied to remote terminal equipment, and the device includes:
  • a transceiver unit configured to receive system information and auxiliary information sent by the relay terminal device, where the auxiliary information includes sending time information of the system information;
  • a processing unit configured to calculate a reference time according to the system information and sending time information of the system information.
  • the sending time information of the system information includes at least one of the following:
  • the frame number of the frame where the system information is sent by the network device
  • the subframe number of the subframe where the system information is sent by the network device
  • the frame number of the frame where the system information window is located, and the system information window is used for the network device to send the system information.
  • the frame number is a system frame number or a directly-connected frame number of a directly-connected frame aligned with the system frame.
  • the subframe number is a system subframe number or a directly connected subframe number of a directly connected subframe aligned with the system subframe.
  • the direct connection frame number is obtained by the relay terminal device according to the system frame number.
  • the system information includes reference information; in response to the frame number being a directly connected frame number or the subframe number being the directly connected subframe number, the reference information is used to indicate the system information The time corresponding to the end boundary of the direct frame in the sending time information; or, the reference information is used to indicate the time corresponding to the end boundary of the system information window in the sending time information of the system information.
  • the processing unit is further configured to: send the reference time to a high layer of the remote terminal device.
  • the system information is a system information block SIB9.
  • the embodiment of the fourth aspect of the present application proposes a clock synchronization device, the device is applied to relay terminal equipment, and the device includes:
  • transceiver unit configured to send system information and auxiliary information to the relay device, where the auxiliary information includes sending time information of the system information;
  • the system information and sending time information of the system information are used by the remote terminal device to calculate a reference time.
  • the sending time information of the system information includes at least one of the following:
  • the frame number of the frame where the system information is sent by the network device
  • the subframe number of the subframe where the system information is sent by the network device
  • the frame number of the frame where the system information window is located, and the system information window is used for the network device to send the system information.
  • the frame number is a system frame number or a directly-connected frame number of a directly-connected frame aligned with the system frame.
  • the subframe number is a system subframe number or a directly connected subframe number of a directly connected subframe aligned with the system subframe.
  • the direct connection frame number is obtained by the relay terminal device according to the system frame number.
  • the system information includes reference information; in response to the frame number being a directly connected frame number or the subframe number being the directly connected subframe number, the reference information is used to indicate the system information The time corresponding to the end boundary of the direct frame in the sending time information; or, the reference information is used to indicate the time corresponding to the end boundary of the system information window in the sending time information of the system information.
  • the system information is a system information block SIB9.
  • the embodiment of the fifth aspect of the present application provides a communication device, the device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the The device executes the clock synchronization method described in the embodiment of the first aspect above.
  • the embodiment of the sixth aspect of the present application provides a communication device, the device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the The device executes the clock synchronization method described in the embodiment of the second aspect above.
  • the embodiment of the seventh aspect of the present application provides a communication device, the device includes a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to make the The device executes the clock synchronization method described in the embodiment of the first aspect above.
  • the embodiment of the eighth aspect of the present application provides a communication device, the device includes a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to make the The device executes the clock synchronization method described in the embodiment of the second aspect above.
  • the embodiment of the ninth aspect of the present application provides a computer-readable storage medium for storing instructions, and when the instructions are executed, the clock synchronization method described in the embodiment of the first aspect above is implemented.
  • the embodiment of the tenth aspect of the present application provides a computer-readable storage medium for storing instructions, and when the instructions are executed, the clock synchronization method described in the embodiment of the second aspect above is implemented.
  • the embodiment of the eleventh aspect of the present application provides a computer program that, when running on a computer, causes the computer to execute the clock synchronization distribution method described in the embodiment of the first aspect.
  • the embodiment of the twelfth aspect of the present application provides a computer program that, when running on a computer, causes the computer to execute the clock synchronization method described in the embodiment of the second aspect.
  • the system information includes reference information
  • the auxiliary information includes sending time information of the system information.
  • the system Information and the sending time information of the system information calculate the reference time, so that the terminal device can calculate the reference time without being directly connected to the network device, so as to perform clock synchronization and assist GPS positioning, which effectively improves the accuracy of terminal device positioning. precision and robustness.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a clock synchronization method provided in an embodiment of the present application
  • FIG. 3 is a schematic flowchart of a clock synchronization method provided in an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a clock synchronization method provided in an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a clock synchronization method provided in an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a clock synchronization device provided in an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a clock synchronization device provided in an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another clock synchronization device provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a chip provided by an embodiment of the present application.
  • first, second, and third may be used in the embodiment of the present application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the embodiments of the present application, first information may also be called second information, and similarly, second information may also be called first information.
  • first information may also be called second information
  • second information may also be called first information.
  • the words "if” and "if” as used herein may be interpreted as “at” or "when” or "in response to a determination.”
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • the communication system may include but not limited to a network device, a relay terminal device, and a remote terminal device.
  • the number and form of the devices shown in Figure 1 are for example only and do not constitute a limitation to the embodiment of the application. In practical applications It may include two or more network devices, two or more relay terminal devices and two or more remote terminal devices.
  • the communication system shown in FIG. 1 includes a network device 101 , a relay terminal device 102 and a remote terminal device 103 as an example.
  • LTE Long Term Evolution
  • 5G new air interface system 5G new air interface system
  • other future new mobile communication systems 5G new air interface system
  • the network device 101 in the embodiment of the present application is an entity on the network side for transmitting or receiving signals.
  • the network device 101 may be an evolved base station (Evolved NodeB, eNB), a transmission point (Transmission Reception Point, TRP), a next-generation base station (Next Generation NodeB, gNB) in an NR system, or a base station in other future mobile communication systems.
  • Evolved NodeB, eNB evolved NodeB
  • TRP Transmission Reception Point
  • gNB next-generation base station
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.
  • the network device provided by the embodiment of the present application may be composed of a centralized unit (Central Unit, CU) and a distributed unit (Distributed Unit, DU), wherein the CU may also be called a control unit (Control Unit), using CU-DU
  • the structure of the network device such as the protocol layer of the base station, can be separated, and the functions of some protocol layers are placed in the centralized control of the CU, and the remaining part or all of the functions of the protocol layer are distributed in the DU, and the CU centrally controls the DU.
  • the relay terminal device 102 and the remote terminal device 103 in the embodiment of the present application are entities on the user side for receiving or transmitting signals, such as mobile phones.
  • the terminal equipment may also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (Mobile Station, MS), mobile terminal equipment (Mobile Terminal, MT) and so on.
  • the terminal device can be a car with communication functions, a smart car, a mobile phone (Mobile Phone), a wearable device, a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality ( Augmented Reality, AR) terminal equipment, wireless terminal equipment in Industrial Control, wireless terminal equipment in Self-Driving, wireless terminal equipment in Remote Medical Surgery, smart grid ( Wireless terminal devices in Smart Grid, wireless terminal devices in Transportation Safety, wireless terminal devices in Smart City, wireless terminal devices in Smart Home, etc.
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.
  • a network device may broadcast auxiliary information, and the terminal device can calibrate a clock based on the auxiliary information, so as to perform more accurate positioning.
  • the auxiliary information can be sent through the system information block SIB9 (System Information Block Type 9), and the terminal device performs clock calibration according to the time of receiving SIB9 and the reference information carried in the auxiliary information.
  • SIB9 System Information Block Type 9
  • the reference information carried in the auxiliary information is used to indicate the time corresponding to the end boundary of the system frame where the system information SI window sent by the SIB9 is located.
  • terminal device mentioned in the related art is directly connected to the network device for communication.
  • the terminal device 103 can not directly communicate with the network device 101, but communicate with the network device 101 through the relay of the terminal device 102.
  • the terminal device 103 is a remote terminal device
  • the terminal device 102 is a relay terminal device.
  • the remote terminal device 103 communicates with the relay terminal device 102 through a sidelink.
  • the remote terminal device 103 can send a system information request to the relay terminal device 102, and the relay terminal device 102 obtains the corresponding system information after receiving the system information request, and then sends the system information to the remote terminal device through the side link terminal device 103.
  • the remote terminal device 103 cannot determine the SI window for transmission of the system information, and thus cannot determine the time indicated by the reference information carried in the system information, thus cannot Calibrate the clock.
  • the auxiliary information by receiving the system information and auxiliary information sent by the relay terminal device, includes the sending time information of the system information, and calculating the reference time according to the system information and the sending time information of the system information, so that the terminal device In the case of not being directly connected to the network device, the reference time can also be calculated, so as to perform clock synchronization, assist GPS positioning, and effectively improve the accuracy and robustness of terminal device positioning.
  • FIG. 2 is a schematic flowchart of a clock synchronization method provided by an embodiment of the present application. It should be noted that the clock synchronization method in the embodiment of the present application is performed by a remote terminal device. As shown in Figure 2, the method may include the following steps:
  • Step 201 receiving system information and auxiliary information sent by a relay terminal device, where the auxiliary information includes sending time information of the system information.
  • the remote terminal device can calculate the reference time according to the received system information and auxiliary information, so as to further send the reference time to the upper layer for clock synchronization.
  • system information is sent by the network device to the relay terminal device, and then forwarded by the relay terminal device to the remote terminal device.
  • the system information will be transmitted within a time domain window, and the time domain window is a system information (SI) window.
  • SI system information
  • the system information is a system information block SIB9.
  • the system information may include reference information, where the reference information is time reference information, which can indicate a time, which is related to the time when the network device sends the system information, and the reference information indicates that the system information is sent by the network The time corresponding to the position of the time-domain resource where the device sends. That is to say, the remote terminal device can calculate the reference time according to the received system information (specifically, reference information in the system information) and auxiliary information. The auxiliary information is determined by the relay terminal device, including the sending time information of the system information.
  • the sending time information of the system information includes at least one of the following: the frame number of the frame in which the system information is sent by the network device; the subframe of the subframe in which the system information is sent by the network device Frame number; the frame number of the frame where the system information window is located.
  • the sending time information of the system information includes: a frame number of a frame where the system information is sent by the network device.
  • the sending time information of the system information includes: a subframe number of a subframe where the system information is sent by the network device.
  • the sending time information of the system information includes: a frame number of a frame where the system information window is located.
  • the frame where the system information window is located may be the frame where the end boundary of the system information window is located, or the frame where the start boundary of the system information window is located.
  • the sending time information of the system information includes: the frame number of the frame in which the system information is sent by the network device, and the subframe of the subframe in which the system information is sent by the network device Number.
  • the sending time information of the system information includes: a frame number of a frame where the system information is sent by the network device, and a frame number of a frame where the system information window is located.
  • the sending time information of the system information includes: a subframe number of a subframe where the system information is sent by the network device, and a frame number of a frame where the system information window is located.
  • the sending time information of the system information includes: the frame number of the frame where the system information is sent by the network device, the subframe number of the subframe where the system information is sent by the network device, and the frame number of the frame where the system info window is located.
  • the sending time information of the system information may include the frame number of the frame where the system information is sent by the network device, the subframe number of the subframe where the system information is sent by the network device, and the frame number where the system information window is located. One or more of the frame number of the frame.
  • the above-mentioned frame number can be a system frame number SFN (System Frame Number), or a direct frame number DFN (Direct Frame Number), similarly, the above-mentioned subframe number can be a system subframe number, or can be Directly connected subframe number.
  • SFN System Frame Number
  • DFN Direct Frame Number
  • the above-mentioned subframe number can be a system subframe number, or can be Directly connected subframe number.
  • the directly connected frame number DFN is the number of the directly connected frame aligned with the system frame
  • the directly connected subframe number is the number of the directly connected subframe aligned with the system subframe.
  • the direct frame and the direct subframe are frame structures in the sidelink.
  • the direct connection frame number is determined by the relay device according to the system frame number, and it can also be understood that the direct connection subframe number may also be determined by the relay device according to the system subframe number.
  • the direct connection subframe number may also be determined by the relay device according to the direct connection frame number. It should be understood that the direct connection frame number and/or the direct connection subframe number may also be determined in other ways such as system conventions , which is not limited in this application.
  • the sending time information of the system information includes: the system frame number SFN of the system frame where the system information is sent by the network device, or, the sending time information of the system information includes: The relay terminal device determines the direct frame number DFN of the direct frame aligned with the system frame where the system information is located according to the system frame number SFN.
  • the sending time information of the system information includes: the system subframe number of the system subframe where the system information is sent by the network device, or, the sending time information of the system information includes: The direct subframe number of the direct subframe aligned with the system subframe where the system information is determined by the terminal device according to the system subframe number.
  • the sending time information of the system information includes: the system frame number SFN of the system frame where the system information window where the network device sends the system information is located, or, the sending time information of the system information includes: The direct frame number DFN of the direct frame aligned with the system frame where the system information window is located is determined by the terminal device according to the system frame number SFN.
  • the frame where the system information window is located may be the frame where the end boundary of the system information window is located, or the frame where the start boundary of the system information window is located.
  • the reference information is used to indicate the time corresponding to the end boundary of the system frame in the sending time information of the system information.
  • the reference information is used to indicate the end boundary of the directly connected frame in the sending time information of the system information. corresponding moment.
  • the reference information is used to indicate the time corresponding to the end boundary of the system information window in the sending time information of the system information.
  • the reference information is used to indicate the time corresponding to the end boundary of the system frame where the system information is sent by the network device, or, the reference information is used to indicate that the system information is sent by the network device The time corresponding to the end boundary of the system frame where the SI window of information is located.
  • the reference information is used to indicate, at the time corresponding to the end boundary of the directly connected frame, the directly connected frame Align with the system frame in which this system information is sent by the network device.
  • the directly connected subframe number indicates the directly connected frame to which the corresponding directly connected subframe belongs, and the corresponding directly connected subframe is in the directly connected frame s position. Therefore, based on the number of the directly connected subframe in the sending time information, the directly connected frame to which it belongs can be determined.
  • the reference information is used to indicate the moment corresponding to the end boundary of the SI window, where the SI window is the SI window for the network device to send the system information.
  • the remote terminal device before receiving the system information sent by the relay terminal device, can send a system information request to the relay terminal device according to its own needs, and the relay terminal device can obtain the corresponding system information according to the system information request. system information and send it to the remote terminal equipment.
  • Step 202 calculating a reference time according to the system information and sending time information of the system information.
  • the terminal device can calculate the reference time according to the system information and the sending time information of the system information.
  • the terminal device can calculate the reference time according to the reference information in the system information and the sending time information of the system information.
  • the terminal device can determine the position in the time domain resource when the system information is sent by the network device, and the terminal device can determine the time domain resource when the system information is sent by the network device according to the reference information.
  • the time corresponding to the time-domain resource position of therefore, the terminal device can calculate the reference time based on the reference information and the sending time information of the system information.
  • the terminal device after the terminal device calculates the reference time, it will send the reference time to the high layer of the terminal device, and the high layer of the terminal device can calibrate the clock according to the reference time to perform clock synchronization.
  • the high layer of the terminal device is a NAS layer (Non-Access Stratum, non-access layer) or an application layer.
  • NAS layer Non-Access Stratum, non-access layer
  • application layer an application layer
  • the auxiliary information includes the sending time information of the system information, and calculating the reference time according to the system information and the sending time information of the system information, so that the terminal device When the network devices are directly connected, the reference time can also be calculated, so as to perform clock synchronization and assist GPS positioning, effectively improving the accuracy and robustness of terminal device positioning.
  • FIG. 3 is a schematic flowchart of a clock synchronization method provided by an embodiment of the present application. It should be noted that the clock synchronization method in the embodiment of the present application is executed by a terminal device. As shown in Figure 3, the method may include the following steps:
  • Step 301 receiving system information and auxiliary information sent by a relay terminal device, where the auxiliary information includes sending time information of the system information.
  • system information is sent by the network device to the relay terminal device, and then forwarded by the relay terminal device to the remote terminal device.
  • the system information will be transmitted within a time domain window, and the time domain window is a system information (SI) window.
  • SI system information
  • the system information is a system information block SIB9.
  • the system information may include reference information, where the reference information is time reference information and can indicate a time, which is related to the time when the network device sends the system information, and the reference information indicates the time when the system information is sent by the network device The moment corresponding to the location of the domain resource.
  • reference information is time reference information and can indicate a time, which is related to the time when the network device sends the system information, and the reference information indicates the time when the system information is sent by the network device The moment corresponding to the location of the domain resource.
  • the auxiliary information is determined by the relay terminal device, including the sending time information of the system information.
  • the sending time information of the system information includes at least one of the following: the frame number of the frame in which the system information is sent by the network device; the subframe of the subframe in which the system information is sent by the network device Frame number; the frame number of the frame where the system information window is located.
  • the aforementioned frame number may be a system frame number SFN, or may be a directly connected frame number DFN, and the aforementioned subframe number may be a system subframe number, or may also be a directly connected subframe number.
  • the directly connected frame number DFN is the number of the directly connected frame aligned with the system frame
  • the directly connected subframe number is the number of the directly connected subframe aligned with the system subframe.
  • the direct frame and the direct subframe are frame structures in the sidelink.
  • the direct connection frame number is determined by the relay device according to the system frame number, and it can also be understood that the direct connection subframe number may also be determined by the relay device according to the system subframe number.
  • the direct connection subframe number may also be determined by the relay device according to the direct connection frame number. It should be understood that the direct connection frame number and/or the direct connection subframe number may also be determined in other ways such as system conventions , which is not limited in this application.
  • the sending time information of the system information includes: the system frame number SFN of the system frame where the system information is sent by the network device, or, the sending time information of the system information includes: The relay terminal device determines the direct frame number DFN of the direct frame aligned with the system frame where the system information is located according to the system frame number SFN.
  • the sending time information of the system information includes: the system subframe number of the system subframe where the system information is sent by the network device, or, the sending time information of the system information includes: The direct subframe number of the direct subframe aligned with the system subframe where the system information is determined by the terminal device according to the system subframe number.
  • the sending time information of the system information includes: the system frame number SFN of the system frame where the system information window where the network device sends the system information is located, or the sending time information of the system information includes: The direct frame number DFN of the direct frame aligned with the system frame where the system information window is located is determined by the terminal device according to the system frame number SFN.
  • the frame where the system information window is located may be the frame where the end boundary of the system information window is located, or the frame where the start boundary of the system information window is located.
  • the sending time information of the system information may include the frame number of the frame in which the system information is sent by the network device, the subframe number of the subframe in which the system information is sent by the network device, the system One or more of the frame numbers of the frame where the information window is located. Therefore, for the case where the frame number is the system frame number or a directly connected frame number aligned with the system frame number and for the case where the subframe number is the system subframe number or the The situation of directly connected subframe numbers aligned with the system subframe numbers is similar to the previous three possible implementation manners, and will not be repeated here.
  • the reference information is used to indicate the time corresponding to the end boundary of the system frame in the sending time information of the system information.
  • the reference information is used to indicate the end boundary of the directly connected frame in the sending time information of the system information. corresponding moment.
  • the reference information is used to indicate the time corresponding to the end boundary of the system information window in the sending time information of the system information.
  • the reference information is used to indicate the time corresponding to the end boundary of the system frame where the system information is sent by the network device, or, the reference information is used to indicate that the system information is sent by the network device The time corresponding to the end boundary of the system frame where the SI window of information is located.
  • the reference information is used to indicate, at the time corresponding to the end boundary of the directly connected frame, the directly connected frame Align with the system frame in which this system information is sent by the network device.
  • the directly connected subframe number indicates the directly connected frame to which the corresponding directly connected subframe belongs, and the corresponding directly connected subframe is in the directly connected frame s position. Therefore, based on the number of the directly connected subframe in the sending time information, the directly connected frame to which it belongs can be determined.
  • the reference information is used to indicate the moment corresponding to the end boundary of the SI window, where the SI window is the SI window for the network device to send the system information.
  • the remote terminal device before receiving the system information sent by the relay terminal device, can send a system information request to the relay terminal device according to its own needs, and the relay terminal device can obtain the corresponding system information according to the system information request. system information and send it to the remote terminal equipment.
  • Step 302 calculating a reference time according to the system information and sending time information of the system information.
  • the terminal device can calculate the reference time according to the system information and the sending time information of the system information.
  • the terminal device can calculate the reference time according to the reference information in the system information and the sending time information of the system information.
  • the terminal device can determine the position in the time domain resource when the system information is sent by the network device, and the terminal device can determine the time domain resource when the system information is sent by the network device according to the reference information.
  • the time corresponding to the time-domain resource position of therefore, the terminal device can calculate the reference time based on the reference information and the sending time information of the system information.
  • Step 303 sending the reference time to the high layer of the terminal device.
  • the terminal device After the terminal device calculates the reference time, it will send the reference time to the high layer of the terminal device, and the high layer of the terminal device can calibrate the clock according to the reference time to perform clock synchronization.
  • the high layer of the terminal device is a NAS layer (Non-Access Stratum, non-access layer) or an application layer.
  • NAS layer Non-Access Stratum, non-access layer
  • application layer an application layer
  • the auxiliary information includes the sending time information of the system information, calculate the reference time according to the system information and the sending time information of the system information, and send the reference time to
  • the high layer of the terminal equipment enables the terminal equipment to calculate the reference time without being directly connected to the network equipment, thereby performing clock synchronization, assisting GPS positioning, and effectively improving the accuracy and robustness of terminal equipment positioning.
  • FIG. 4 is a schematic flowchart of a clock synchronization method provided by an embodiment of the present application. It should be noted that the clock synchronization method in this embodiment of the present application is executed by a relay terminal device. As shown in Figure 4, the method may include the following steps:
  • Step 401 sending system information and auxiliary information to a remote terminal device, where the auxiliary information includes sending time information of the system information.
  • the system information and the sending time information of the system information are used by the remote terminal device to calculate the reference time, that is, the remote terminal device can calculate the reference time according to the received system information and auxiliary information, so that it can further The reference time is sent to the upper layer for clock synchronization.
  • system information is sent by the network device to the relay terminal device, and then forwarded by the relay terminal device to the remote terminal device.
  • the system information will be transmitted within a time domain window, and the time domain window is a system information (SI) window.
  • SI system information
  • the system information is a system information block SIB9.
  • the system information may include reference information, where the reference information is time reference information, which can indicate a time, which is related to the time when the network device sends the system information, and the reference information indicates that the system information is sent by the network The time corresponding to the position of the time-domain resource where the device sends.
  • the remote terminal device can calculate the reference time according to the reference information in the system information and the sending time information of the system information.
  • the auxiliary information is determined by the relay terminal device, including the sending time information of the system information.
  • the relay terminal device can receive the system information sent by the network device, and can determine the sending time information of the system information according to the received system information.
  • the sending time information of the system information includes at least one of the following: the frame number of the frame in which the system information is sent by the network device; the subframe of the subframe in which the system information is sent by the network device Frame number; the frame number of the frame where the system information window is located.
  • the sending time information of the system information includes: a frame number of a frame where the system information is sent by the network device.
  • the sending time information of the system information includes: a subframe number of a subframe where the system information is sent by the network device.
  • the sending time information of the system information includes: a frame number of a frame where the system information window is located.
  • the frame where the system information window is located may be the frame where the end boundary of the system information window is located, or the frame where the start boundary of the system information window is located.
  • the sending time information of the system information includes: the frame number of the frame in which the system information is sent by the network device, and the subframe of the subframe in which the system information is sent by the network device Number.
  • the sending time information of the system information includes: a frame number of a frame where the system information is sent by the network device, and a frame number of a frame where the system information window is located.
  • the sending time information of the system information includes: a subframe number of a subframe where the system information is sent by the network device, and a frame number of a frame where the system information window is located.
  • the sending time information of the system information includes: the frame number of the frame where the system information is sent by the network device, the subframe number of the subframe where the system information is sent by the network device, and the frame number of the frame where the system info window is located.
  • the sending time information of the system information may include the frame number of the frame where the system information is sent by the network device, the subframe number of the subframe where the system information is sent by the network device, and the frame number where the system information window is located. One or more of the frame number of the frame.
  • the above frame number may be a system frame number SFN, or a direct frame number DFN.
  • the above subframe number may be a system subframe number, or a direct frame number.
  • the directly connected frame number DFN is the number of the directly connected frame aligned with the system frame
  • the directly connected subframe number is the number of the directly connected subframe aligned with the system subframe.
  • the direct frame and the direct subframe are frame structures in the sidelink.
  • the direct connection frame number is determined by the relay device according to the system frame number, and it can also be understood that the direct connection subframe number may also be determined by the relay device according to the system subframe number.
  • the direct connection subframe number may also be determined by the relay device according to the direct connection frame number. It should be understood that the direct connection frame number and/or the direct connection subframe number may also be determined in other ways such as system conventions , which is not limited in this application.
  • the sending time information of the system information includes: the system frame number SFN of the system frame where the system information is sent by the network device, or, the sending time information of the system information includes: The relay terminal device determines the direct frame number DFN of the direct frame aligned with the system frame where the system information is located according to the system frame number SFN.
  • the sending time information of the system information includes: the system subframe number of the system subframe where the system information is sent by the network device, or, the sending time information of the system information includes: The direct subframe number of the direct subframe aligned with the system subframe where the system information is determined by the terminal device according to the system subframe number.
  • the sending time information of the system information includes: the system frame number SFN of the system frame where the system information window where the network device sends the system information is located, or, the sending time information of the system information includes: The direct frame number DFN of the direct frame aligned with the system frame where the system information window is located is determined by the terminal device according to the system frame number SFN.
  • the frame where the system information window is located may be the frame where the end boundary of the system information window is located, or the frame where the start boundary of the system information window is located.
  • the reference information is used to indicate the time corresponding to the end boundary of the system frame in the sending time information of the system information.
  • the reference information is used to indicate the end boundary of the directly connected frame in the sending time information of the system information. corresponding moment.
  • the reference information is used to indicate the time corresponding to the end boundary of the system information window in the sending time information of the system information.
  • the reference information is used to indicate the time corresponding to the end boundary of the system frame where the system information is sent by the network device, or, the reference information is used to indicate that the system information is sent by the network device The time corresponding to the end boundary of the system frame where the SI window of information is located.
  • the reference information is used to indicate, at the time corresponding to the end boundary of the directly connected frame, the directly connected frame Align with the system frame in which this system information is sent by the network device.
  • the directly connected subframe number indicates the directly connected frame to which the corresponding directly connected subframe belongs, and the corresponding directly connected subframe is in the directly connected frame s position. Therefore, based on the directly connected subframe number in the sending time information, the directly connected frame to which it belongs can be determined.
  • the reference information is used to indicate the moment corresponding to the end boundary of the SI window, where the SI window is the SI window for the network device to send the system information.
  • the relay terminal device can receive the system information request sent by the remote terminal device.
  • the system information request is determined by the remote terminal device according to its own needs, and the relay terminal device can obtain the corresponding system information and send it to the remote terminal equipment.
  • the auxiliary information includes the sending time information of the system information, so that the remote terminal device can calculate the reference time according to the system information and the sending time information of the system information, so that The terminal device can also calculate the reference time without being directly connected to the network device, so as to perform clock synchronization and assist GPS positioning, effectively improving the accuracy and robustness of terminal device positioning.
  • FIG. 5 is a schematic flowchart of a clock synchronization method provided by an embodiment of the present application. It should be noted that the clock synchronization method in this embodiment of the present application is executed by a relay terminal device. As shown in Figure 5, the method may include the following steps:
  • Step 501 receiving a system information request sent by a remote terminal device.
  • the remote terminal device can send a system information request to the relay terminal device according to its own needs, for example, if the system information is not stored.
  • Step 502 acquiring system information corresponding to the system information request.
  • the relay terminal device acquires corresponding system information according to the received system information request.
  • the system information is sent by the network device to the relay terminal device.
  • the relay terminal device After acquiring the system information, the relay terminal device can send the system information to the remote terminal device through the sidelink.
  • Step 503 sending system information and auxiliary information to the remote terminal device, where the auxiliary information includes sending time information of the system information.
  • the system information and the sending time information of the system information are used by the remote terminal device to calculate the reference time, that is, the remote terminal device can calculate the reference time according to the received system information and auxiliary information, so that it can further The reference time is sent to the upper layer for clock synchronization.
  • system information is sent by the network device to the relay terminal device, and then forwarded by the relay terminal device to the remote terminal device.
  • the system information will be transmitted within a time domain window, and the time domain window is a system information (SI) window.
  • SI system information
  • the system information is a system information block SIB9.
  • the system information may include reference information, where the reference information is time reference information and can indicate a time, which is related to the time when the network device sends the system information, and the reference information indicates the time when the system information is sent by the network device The moment corresponding to the location of the domain resource.
  • the remote terminal device can calculate the reference time according to the reference information in the system information and the sending time information of the system information.
  • the auxiliary information is determined by the relay terminal device, including the sending time information of the system information.
  • the relay terminal device can receive the system information sent by the network device, and can determine the sending time information of the system information according to the received system information.
  • the sending time information of the system information includes at least one of the following: the frame number of the frame in which the system information is sent by the network device; the subframe of the subframe in which the system information is sent by the network device Frame number; the frame number of the frame where the system information window is located.
  • the above frame number may be the system frame number SFN, or the direct frame number DFN.
  • the above subframe number may be the system subframe number, or the direct frame number.
  • the directly connected frame number DFN is the number of the directly connected frame aligned with the system frame
  • the directly connected subframe number is the number of the directly connected subframe aligned with the system subframe.
  • the direct frame and the direct subframe are frame structures in the sidelink.
  • the direct connection frame number is determined by the relay device according to the system frame number, and it can also be understood that the direct connection subframe number may also be determined by the relay device according to the system subframe number.
  • the direct connection subframe number may also be determined by the relay device according to the direct connection frame number. It should be understood that the direct connection frame number and/or the direct connection subframe number may also be determined in other ways such as system conventions , which is not limited in this application.
  • the sending time information of the system information includes: the system frame number SFN of the system frame where the system information is sent by the network device, or, the sending time information of the system information includes: The relay terminal device determines the direct frame number DFN of the direct frame aligned with the system frame where the system information is located according to the system frame number SFN.
  • the sending time information of the system information includes: the system subframe number of the system subframe where the system information is sent by the network device, or, the sending time information of the system information includes: The direct subframe number of the direct subframe aligned with the system subframe where the system information is determined by the terminal device according to the system subframe number.
  • the sending time information of the system information includes: the system frame number SFN of the system frame where the system information window where the network device sends the system information is located, or the sending time information of the system information includes: The direct frame number DFN of the direct frame aligned with the system frame where the system information window is located is determined by the terminal device according to the system frame number SFN.
  • the frame where the system information window is located may be the frame where the end boundary of the system information window is located, or the frame where the start boundary of the system information window is located.
  • the sending time information of the system information may include the frame number of the frame in which the system information is sent by the network device, the subframe number of the subframe in which the system information is sent by the network device, the system One or more of the frame numbers of the frame where the information window is located. Therefore, for the case where the frame number is the system frame number or a directly connected frame number aligned with the system frame number and for the case where the subframe number is the system subframe number or the The situation of directly connected subframe numbers aligned with the system subframe numbers is similar to the above three possible implementation manners, and will not be repeated here.
  • the reference information is used to indicate the time corresponding to the end boundary of the system frame in the sending time information of the system information.
  • the reference information is used to indicate the end boundary of the directly connected frame in the sending time information of the system information. corresponding moment.
  • the reference information is used to indicate the time corresponding to the end boundary of the system information window in the sending time information of the system information.
  • the reference information is used to indicate the time corresponding to the end boundary of the system frame where the system information is sent by the network device, or, the reference information is used to indicate that the system information is sent by the network device The time corresponding to the end boundary of the system frame where the SI window of information is located.
  • the reference information is used to indicate, at the time corresponding to the end boundary of the directly connected frame, the directly connected frame Align with the system frame in which this system information is sent by the network device.
  • the directly connected subframe number indicates the directly connected frame to which the corresponding directly connected subframe belongs, and the corresponding directly connected subframe is in the directly connected frame s position. Therefore, based on the number of the directly connected subframe in the sending time information, the directly connected frame to which it belongs can be determined.
  • the reference information is used to indicate the moment corresponding to the end boundary of the SI window, where the SI window is the SI window for the network device to send the system information.
  • the system information corresponding to the system information request is obtained, and the system information and auxiliary information are sent to the remote terminal device.
  • the auxiliary information includes the sending time information of the system information, so that the remote The terminal device can calculate the reference time according to the system information and the sending time information of the system information, so that the terminal device can also calculate the reference time without being directly connected to the network device, so as to perform clock synchronization and assist GPS positioning. The accuracy and robustness of terminal device positioning are effectively improved.
  • the present application also provides a clock synchronization device. Since the clock synchronization device provided by the embodiments of the present application corresponds to the methods provided by the above several embodiments, the The implementation of the method is also applicable to the clock synchronization device provided in the following embodiments, which will not be described in detail in the following embodiments.
  • FIG. 6 is a schematic structural diagram of a clock synchronization device provided in an embodiment of the present application.
  • the clock synchronization device 600 includes: a transceiver unit 610 and a processing unit 620, wherein:
  • a transceiver unit 610 configured to receive system information and auxiliary information sent by the relay terminal device.
  • the auxiliary information includes sending time information of the system information;
  • the processing unit 620 is configured to calculate a reference time according to the system information and sending time information of the system information.
  • the sending time information of the system information includes at least one of the following:
  • the frame number of the frame where the system information is sent by the network device
  • the subframe number of the subframe where the system information is sent by the network device
  • the frame number of the frame where the system information window is located, and the system information window is used for the network device to send the system information.
  • the frame number is a system frame number or a directly-connected frame number of a directly-connected frame aligned with the system frame.
  • the subframe number is a system subframe number or a directly connected subframe number of a directly connected subframe aligned with the system subframe.
  • the direct connection frame number is obtained by the relay terminal device according to the system frame number.
  • the system information includes reference information; in response to the frame number being a directly connected frame number or the subframe number being the directly connected subframe number, the reference information is used to indicate the system information The time corresponding to the end boundary of the direct frame in the sending time information; or, the reference information is used to indicate the time corresponding to the end boundary of the system information window in the sending time information of the system information.
  • the processing unit 620 is further configured to: send the reference time to a high layer of the remote terminal device.
  • the system information is a system information block SIB9.
  • the clock synchronization device in this embodiment can calculate the reference time according to the system information and the sending time information of the system information by receiving the system information and auxiliary information sent by the relay terminal device, the auxiliary information including the sending time information of the system information, This enables the terminal device to calculate the reference time without being directly connected to the network device, thereby performing clock synchronization, assisting GPS positioning, and effectively improving the accuracy and robustness of terminal device positioning.
  • FIG. 7 is a schematic structural diagram of a clock synchronization device provided in an embodiment of the present application.
  • the clock synchronization device 700 includes: a transceiver unit 710, wherein:
  • a transceiver unit 710 configured to send system information and auxiliary information to the relay device, where the auxiliary information includes sending time information of the system information;
  • the reference information and sending time information of the system information are used by the remote terminal device to calculate a reference time.
  • the sending time information of the system information includes at least one of the following:
  • the frame number of the frame where the system information is sent by the network device
  • the subframe number of the subframe where the system information is sent by the network device
  • the frame number of the frame where the system information window is located, and the system information window is used for the network device to send the system information.
  • the frame number is a system frame number or a directly-connected frame number of a directly-connected frame aligned with the system frame.
  • the subframe number is a system subframe number or a directly connected subframe number of a directly connected subframe aligned with the system subframe.
  • the direct connection frame number is obtained by the relay terminal device according to the system frame number.
  • the system information includes reference information; in response to the frame number being a directly connected frame number or the subframe number being the directly connected subframe number, the reference information is used to indicate the system information The time corresponding to the end boundary of the direct frame in the sending time information; or, the reference information is used to indicate the time corresponding to the end boundary of the system information window in the sending time information of the system information.
  • the system information is a system information block SIB9.
  • the clock synchronization device in this embodiment can send system information and auxiliary information to the remote terminal equipment, the system information includes reference information, and the auxiliary information includes sending time information of the system information, so that the remote terminal equipment can Information and the sending time information of the system information calculate the reference time, so that the terminal device can calculate the reference time without being directly connected to the network device, so as to perform clock synchronization and assist GPS positioning, which effectively improves the accuracy of terminal device positioning. precision and robustness.
  • the embodiment of the present application also proposes a communication device, including: a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the The method shown in Fig. 3 embodiment.
  • the embodiment of the present application also proposes a communication device, including: a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the The method shown in Fig. 5 embodiment.
  • the embodiment of the present application also proposes a communication device, including: a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to Execute the methods shown in the embodiments shown in FIG. 2 to FIG. 3 .
  • the embodiment of the present application also proposes a communication device, including: a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to Execute the methods shown in the embodiments shown in FIG. 4 to FIG. 5 .
  • FIG. 8 is a schematic structural diagram of another clock synchronization device provided by an embodiment of the present application.
  • the clock synchronization device 800 may be a remote terminal device, or a relay terminal device, or a chip, a chip system, or a processor that supports the remote terminal device to implement the above method, or may be a relay terminal device that supports the implementation of the above method.
  • the device can be used to implement the methods described in the above method embodiments, and for details, refer to the descriptions in the above method embodiments.
  • the clock synchronization device 800 may include one or more processors 801 .
  • the processor 801 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control clock synchronization devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.), and execute computer Programs, which process data for computer programs.
  • the clock synchronization device 800 may further include one or more memories 802, on which a computer program 803 may be stored, and the processor 801 executes the computer program 803, so that the clock synchronization device 800 executes the method described in the above method embodiment. method.
  • the computer program 803 may be solidified in the processor 801, and in this case, the processor 801 may be implemented by hardware.
  • data may also be stored in the memory 802 .
  • the clock synchronization device 800 and the memory 802 can be set separately or integrated together.
  • the clock synchronization device 800 may further include a transceiver 805 and an antenna 806 .
  • the transceiver 805 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function.
  • the transceiver 805 may include a receiver and a transmitter, and the receiver may be called a receiver or a receiving circuit for realizing a receiving function; the transmitter may be called a transmitter or a sending circuit for realizing a sending function.
  • the clock synchronization device 800 may further include one or more interface circuits 807 .
  • the interface circuit 807 is used to receive code instructions and transmit them to the processor 801 .
  • the processor 801 runs code instructions to enable the clock synchronization device 800 to execute the methods described in the foregoing method embodiments.
  • the processor 801 may include a transceiver for implementing receiving and sending functions.
  • the transceiver may be a transceiver circuit, or an interface, or an interface circuit.
  • the transceiver circuits, interfaces or interface circuits for realizing the functions of receiving and sending can be separated or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit may be used for signal transmission or transfer.
  • the clock synchronization apparatus 800 may include a circuit, and the circuit may implement the function of sending or receiving or communicating in the foregoing method embodiments.
  • the processors and transceivers described in this application can be implemented in integrated circuits (integrated circuits, ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board, PCB), electronic equipment, etc.
  • the processor and transceiver can also be fabricated using various IC process technologies such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the clock synchronization device described in the above embodiments may be a remote terminal device or a relay terminal device, but the scope of the clock synchronization device described in this application is not limited thereto, and the structure of the clock synchronization device may not be changed from that shown in Figure 6- 7 limits.
  • the clock synchronization means may be a stand-alone device or may be part of a larger device.
  • a clock synchronization device could be:
  • a set of one or more ICs may also include storage components for storing data and computer programs;
  • ASIC such as modem (Modem);
  • the clock synchronization device may be a chip or a chip system
  • the chip shown in FIG. 9 includes a processor 901 and an interface 902 .
  • the number of processors 901 may be one or more, and the number of interfaces 902 may be more than one.
  • Interface 902 used to transmit code instructions to the processor
  • the processor 901 is configured to run code instructions to execute the methods shown in FIG. 2 to FIG. 3 .
  • Interface 902 used to transmit code instructions to the processor
  • the processor 901 is configured to run code instructions to execute the methods shown in FIG. 4 to FIG. 5 .
  • the chip further includes a memory 903 for storing necessary computer programs and data.
  • the embodiment of the present application also provides a communication system, the system includes the clock synchronization device as the remote terminal device and the clock synchronization device as the relay terminal device in the embodiment of Figure 6-7, or the system includes the aforementioned In the embodiment 8, the clock synchronization device as a remote terminal device and the clock synchronization device as a relay terminal device.
  • the present application also provides a readable storage medium on which instructions are stored, and when the instructions are executed by a computer, the functions of any one of the above method embodiments are realized.
  • the present application also provides a computer program product, which implements the functions of any one of the above method embodiments when executed by a computer.
  • a computer program product consists of one or more computer programs. When the computer program is loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • a computer can be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer program can be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program can Coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (such as infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server, a data center, etc. integrated with one or more available media.
  • Available media can be magnetic media (e.g., floppy disk, hard disk, magnetic tape), optical media (e.g., high-density digital video disc (digital video disc, DVD)), or semiconductor media (e.g., solid state disk (SSD) )wait.
  • magnetic media e.g., floppy disk, hard disk, magnetic tape
  • optical media e.g., high-density digital video disc (digital video disc, DVD)
  • semiconductor media e.g., solid state disk (SSD)
  • At least one in this application can also be described as one or more, and multiple can be two, three, four or more, and this application does not make a limitation.
  • the technical feature is distinguished by "first”, “second”, “third”, “A”, “B”, “C” and “D”, etc.
  • the technical features described in the “first”, “second”, “third”, “A”, “B”, “C” and “D” have no sequence or order of magnitude among the technical features described.
  • the corresponding relationships shown in the tables in this application can be configured or predefined.
  • the values of the information in each table are just examples, and can be configured as other values, which are not limited in this application.
  • the corresponding relationship shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, for example, splitting, merging, and so on.
  • the names of the parameters shown in the titles of the above tables may also adopt other names understandable by the communication device, and the values or representations of the parameters may also be other values or representations understandable by the communication device.
  • other data structures can also be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables can be used wait.
  • Predefined in this application can be understood as defining, predefining, storing, prestoring, prenegotiating, preconfiguring, curing, or prefiring.

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Abstract

本申请实施例公开了一种时钟同步方法及装置，通过接收中继终端设备发送的系统信息和辅助信息，该辅助信息包括系统信息的发送时间信息，根据该系统信息和该系统信息的发送时间信息计算参考时间，使得终端设备在不与网络设备直接相连的情况下，也能够计算出参考时间，从而进行时钟同步，辅助GPS定位，有效提高了终端设备定位的精确性和鲁棒性。

Description

时钟同步方法及装置 技术领域
本申请涉及通信技术领域，特别是指一种时钟同步方法及装置。
背景技术
在通信系统中，终端可以基于基站广播的携带有辅助信息的系统信息块(System Information Block，SIB)来校准时钟，从而进行更精确的GPS(Global Positioning System，全球定位系统)定位。
在一些情况下，终端不与基站直接连接，而是通过另外一个终端的中继来实现与基站的通信，其中，与基站没有连接的终端称为远端(remote)终端，提供中继功能的终端称为中继(relay)终端，远端终端与中继终端之间通过侧行链路(sidelink)单播通信。当中继终端向远端终端转发系统信息时，远端终端无法确定系统信息传输的系统信息(System Information，SI)窗口，从而无法校准时钟。
发明内容
本申请第一方面实施例提出了一种时钟同步方法，所述方法由远端终端设备执行，所述方法包括：
接收中继终端设备发送的系统信息和辅助信息，所述辅助信息包括系统信息的发送时间信息；
根据所述系统信息和所述系统信息的发送时间信息计算参考时间。
可选地，所述系统信息的发送时间信息包括下列中的至少一种：
所述系统信息由网络设备发送时所在的帧的帧号；
所述系统信息由网络设备发送时所在的子帧的子帧号；
系统信息窗口所在的帧的帧号，所述系统信息窗口用于所述网络设备发送所述系统信息。
可选地，所述帧号为系统帧号或者与所述系统帧对齐的直连帧的直连帧号。
可选地，所述子帧号为系统子帧号或者与所述系统子帧对齐的直连子帧的直连子帧号。
可选地，所述直连帧号是由所述中继终端设备根据所述系统帧号得到的。
可选地，所述系统信息包括参考信息；响应于所述帧号为直连帧号或者所述子帧号为所述直连子帧号，所述参考信息用于指示所述系统信息的发送时间信息中的直连帧的结束边界所对应的时刻；或者，所述参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
可选地，所述方法还包括：将所述参考时间发送给所述远端终端设备的高层。
可选地，所述系统信息为系统信息块SIB9。
本申请第二方面实施例提出了一种时钟同步方法，所述方法由中继终端设备执行，所述方法包括：
向远端终端设备发送系统信息和辅助信息，所述辅助信息包括系统信息的发送时间信息；
所述系统信息和所述系统信息的发送时间信息，用于所述远端终端设备计算参考时间。
可选地，所述系统信息的发送时间信息包括下列中的至少一种：
所述系统信息由网络设备发送时所在的帧的帧号；
所述系统信息由网络设备发送时所在的子帧的子帧号；
系统信息窗口所在的帧的帧号，所述系统信息窗口用于所述网络设备发送所述系统信息。
可选地，所述帧号为系统帧号或者与所述系统帧对齐的直连帧的直连帧号。
可选地，所述子帧号为系统子帧号或者与所述系统子帧对齐的直连子帧的直连子帧号。
可选地，所述直连帧号是由所述中继终端设备根据所述系统帧号得到的。
可选地，所述系统信息包括参考信息；响应于所述帧号为直连帧号或者所述子帧号为所述直连子帧号，所述参考信息用于指示所述系统信息的发送时间信息中的直连帧的结束边界所对应的时刻；或者，所述参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
可选地，所述系统信息为系统信息块SIB9。
本申请第三方面实施例提出了一种时钟同步装置，所述装置应用于远端终端设备，所述装置包括：
收发单元，用于接收中继终端设备发送的系统信息和辅助信息，所述辅助信息包括系统信息的发送时间信息；
处理单元，用于根据所述系统信息和所述系统信息的发送时间信息计算参考时间。
可选地，所述系统信息的发送时间信息包括下列中的至少一种：
所述系统信息由网络设备发送时所在的帧的帧号；
所述系统信息由网络设备发送时所在的子帧的子帧号；
系统信息窗口所在的帧的帧号，所述系统信息窗口用于所述网络设备发送所述系统信息。
可选地，所述帧号为系统帧号或者与所述系统帧对齐的直连帧的直连帧号。
可选地，所述子帧号为系统子帧号或者与所述系统子帧对齐的直连子帧的直连子帧号。
可选地，所述直连帧号是由所述中继终端设备根据所述系统帧号得到的。
可选地，所述系统信息包括参考信息；响应于所述帧号为直连帧号或者所述子帧号为所述直连子帧号，所述参考信息用于指示所述系统信息的发送时间信息中的直连帧的结束边界所对应的时刻；或者，所述参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
可选地，所述处理单元还用于：将所述参考时间发送给所述远端终端设备的高层。
可选地，所述系统信息为系统信息块SIB9。
本申请第四方面实施例提出了一种时钟同步装置，所述装置应用于中继终端设备，所述装置包括：
收发单元，用于向中继设备发送系统信息和辅助信息，所述辅助信息包括系统信息的发送时间信息；
所述系统信息和所述系统信息的发送时间信息，用于所述远端终端设备计算参考时间。
可选地，所述系统信息的发送时间信息包括下列中的至少一种：
所述系统信息由网络设备发送时所在的帧的帧号；
所述系统信息由网络设备发送时所在的子帧的子帧号；
系统信息窗口所在的帧的帧号，所述系统信息窗口用于所述网络设备发送所述系统信息。
可选地，所述帧号为系统帧号或者与所述系统帧对齐的直连帧的直连帧号。
可选地，所述子帧号为系统子帧号或者与所述系统子帧对齐的直连子帧的直连子帧号。
可选地，所述直连帧号是由所述中继终端设备根据所述系统帧号得到的。
可选地，所述系统信息包括参考信息；响应于所述帧号为直连帧号或者所述子帧号为所述直连子帧号，所述参考信息用于指示所述系统信息的发送时间信息中的直连帧的结束边界所对应的时刻；或者，所述参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
可选地，所述系统信息为系统信息块SIB9。
本申请第五方面实施例提出了一种通信装置，所述装置包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行上述第一方面实施例 所述的时钟同步方法。
本申请第六方面实施例提出了一种通信装置，所述装置包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行上述第二方面实施例所述的时钟同步方法。
本申请第七方面实施例提出了一种通信装置，该装置包括处理器和接口电路，该接口电路用于接收代码指令并传输至该处理器，该处理器用于运行所述代码指令以使该装置执行上述第一方面实施例所述的时钟同步方法。
本申请第八方面实施例提出了一种通信装置，该装置包括处理器和接口电路，该接口电路用于接收代码指令并传输至该处理器，该处理器用于运行所述代码指令以使该装置执行上述第二方面实施例所述的时钟同步方法。
本申请第九方面实施例提出了一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使上述第一方面实施例所述的时钟同步方法被实现。
本申请第十方面实施例提出了一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使上述第二方面实施例所述的时钟同步方法被实现。
本申请第十一方面实施例提出了一种计算机程序，当其在计算机上运行时，使得计算机执行第一方面实施例所述的时钟同步分配方法。
本申请第十二方面实施例提出了一种计算机程序，当其在计算机上运行时，使得计算机执行第二方面实施例所述的时钟同步方法。
本申请实施例提供的一种时钟同步方法及装置，通过接收中继终端设备发送的系统信息和辅助信息，该系统信息中包括参考信息，该辅助信息包括系统信息的发送时间信息，根据该系统信息和该系统信息的发送时间信息计算参考时间，使得终端设备在不与网络设备直接相连的情况下，也能够计算出参考时间，从而进行时钟同步，辅助GPS定位，有效提高了终端设备定位的精确性和鲁棒性。
本申请附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1为本申请实施例提供的一种通信系统的架构示意图；
图2是本申请实施例提供的一种时钟同步方法的流程示意图；
图3是本申请实施例提供的一种时钟同步方法的流程示意图；
图4是本申请实施例提供的一种时钟同步方法的流程示意图；
图5是本申请实施例提供的一种时钟同步方法的流程示意图；
图6是本申请实施例提供的一种时钟同步装置的结构示意图；
图7是本申请实施例提供的一种时钟同步装置的结构示意图；
图8是本申请实施例提供的另一种时钟同步装置的结构示意图；
图9是本申请实施例提供的一种芯片的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请实施例的一些方面相一致的装置和方法的例子。
在本申请实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请实施例。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本申请实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本申请实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”及“若”可以被解释成为“在……时”或“当……时”或“响应于确定”。
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的要素。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
为了更好的理解本申请实施例公开的一种时钟同步方法，下面首先对本申请实施例适用的通信系统进行描述。
请参见图1，图1为本申请实施例提供的一种通信系统的架构示意图。该通信系统可包括但不限于一个网络设备、一个中继终端设备和一个远端终端设备，图1所示的设备数量和形态仅用于举例并不构成对本申请实施例的限定，实际应用中可以包括两个或两个以上的网络设备，两个或两个以上的中继终端设备和两个或两个以上的远端终端设备。图1所示的通信系统以包括一个网络设备101，一个中继终端设备102和一个远端终端设备103为例。
需要说明的是，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、第五代移动通信系统、5G新空口系统，或者其他未来的新型移动通信系统等。
本申请实施例中的网络设备101是网络侧的一种用于发射或接收信号的实体。例如，网络设备101和可以为演进型基站(Evolved NodeB，eNB)、传输点(Transmission Reception Point，TRP)、NR系统中的下一代基站(Next Generation NodeB，gNB)、其他未来移动通信系统中的基站或无线保真(Wireless Fidelity，WiFi)系统中的接入节点等。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。本申请实施例提供的网络设备可以是由集中单元(Central Unit，CU)与分布式单元(Distributed Unit，DU)组成的，其中，CU也可以称为控制单元(Control Unit)，采用CU-DU的结构可以将网络设备，例如基站的协议层拆分开，部分协议层的功能放在CU集中控制，剩下部分或全部协议层的功能分布在DU中，由CU集中控制DU。
本申请实施例中的中继终端设备102和远端终端设备103是用户侧的一种用于接收或发射信号的实体，如手机。终端设备也可以称为终端设备(terminal)、用户设备(user equipment，UE)、移动台(Mobile Station，MS)、移动终端设备(Mobile Terminal，MT)等。终端设备可以是具备通信功能的汽车、智 能汽车、手机(Mobile Phone)、穿戴式设备、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(Industrial Control)中的无线终端设备、无人驾驶(Self-Driving)中的无线终端设备、远程手术(Remote Medical Surgery)中的无线终端设备、智能电网(Smart Grid)中的无线终端设备、运输安全(Transportation Safety)中的无线终端设备、智慧城市(Smart City)中的无线终端设备、智慧家庭(Smart Home)中的无线终端设备等等。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
在相关技术中，为了辅助终端设备获取GPS定位，网络设备可以广播辅助信息，终端设备基于该辅助信息能够校准时钟，从而进行更精确的定位。该辅助信息可以通过系统信息块SIB9(System Information Block Type 9)发送，终端设备根据接收到SIB9的时间以及辅助信息中携带的参考信息，进行时钟校准。其中，该辅助信息中携带的参考信息用于指示SIB9发送的系统信息SI窗口所在的系统帧的结束边界所对应的时刻。
可以理解的是，上述相关技术中所说的终端设备是与网络设备直接连接进行通信的。
在一些情况下，比如为了扩展无线网络的覆盖范围、消除或减少通信盲点、获得更高的链路容量等等，在通信系统中，如图1所示，终端设备103能够不直接与网络设备101相连，而是通过终端设备102的中继来实现与网络设备101的通信。其中，终端设备103为远端终端设备，终端设备102为中继终端设备。远端终端设备103与中继终端设备102之间通过侧行链路sidelink通信。
远端终端设备103可以向中继终端设备102发送系统信息请求，中继终端设备102在收到该系统信息请求之后获取对应的系统信息，然后通过侧行链路将该系统信息发送给远端终端设备103。
然而中继终端设备102在向远端终端设备103转发系统信息时，远端终端设备103无法确定该系统信息传输的SI窗口，从而无法确定该系统信息中携带的参考信息指示的时间，从而无法校准时钟。
本申请的实施例中，通过接收中继终端设备发送的系统信息和辅助信息，该辅助信息包括系统信息的发送时间信息，根据系统消息和该系统信息的发送时间信息计算参考时间，使得终端设备在不与网络设备直接相连的情况下，也能够计算出参考时间，从而进行时钟同步，辅助GPS定位，有效提高了终端设备定位的精确性和鲁棒性。
可以理解的是，本申请实施例描述的通信系统是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着系统架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
下面结合附图对本申请所提供的时钟同步方法及其装置进行详细地介绍。
请参见图2，图2是本申请实施例提供的一种时钟同步方法的流程示意图。需要说明的是，本申请实施例的时钟同步方法由远端终端设备执行。如图2所示，该方法可以包括如下步骤：
步骤201，接收中继终端设备发送的系统信息和辅助信息，该辅助信息包括系统信息的发送时间信息。
远端终端设备根据接收到的系统信息和辅助信息，能够计算出参考时间，从而进一步能够将该参考时间发送给高层，进行时钟同步。
其中，系统信息是由网络设备发送至中继终端设备，再由中继终端设备转发至远端终端设备的。网络设备在发送系统信息时，该系统信息会在一个时域窗口内传输，该时域窗口为系统信息(SI)窗口。
可选地，该系统信息为系统信息块SIB9。
在一些实施方式中，系统信息可以包括参考信息，其中，参考信息是时间参考信息，能够指示一个时刻，该时刻与网络设备发送该系统信息的时间相关，参考信息指示的是该系统信息由网络设备发送时所在的时域资源的位置所对应的时刻。也就是说，远端终端设备能够根据接收到的系统信息(具体地，系统信息中的参考信息)和辅助信息，计算出参考时间。辅助信息是由中继终端设备确定的，其中包括系统信息的发送时间信息。
在一些实施方式中，该系统信息的发送时间信息包括下列中的至少一种：该系统信息由网络设备发送时所在的帧的帧号；该系统信息由网络设备发送时所在的子帧的子帧号；系统信息窗口所在的帧的帧号。
也就是，作为第一种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的帧的帧号。
作为第二种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的子帧的子帧号。
作为第三种可能的实施方式，该系统信息的发送时间信息包括：系统信息窗口所在的帧的帧号。
该系统信息窗口所在的帧，可以是该系统信息窗口的结束边界所在的帧，也可以是该系统信息窗口的起始边界所在的帧。
作为第四种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的帧的帧号，和，该系统信息由网络设备发送时所在的子帧的子帧号。
作为第五种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的帧的帧号，和，系统信息窗口所在的帧的帧号。
作为第六种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的子帧的子帧号，和，系统信息窗口所在的帧的帧号。
作为第七种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的帧的帧号，该系统信息由网络设备发送时所在的子帧的子帧号，以及系统信息窗口所在的帧的帧号。
综上所述，系统信息的发送时间信息可以包括该系统信息由网络设备发送时所在的帧的帧号、该系统信息由网络设备发送时所在的子帧的子帧号、系统信息窗口所在的帧的帧号中的一种或多种。
可选地，上述帧号可以为系统帧号SFN(System Frame Number)，也可以为直连帧号DFN(Direct Frame Number)，类似地，上述子帧号可以为系统子帧号，也可以为直连子帧号。
其中，直连帧号DFN是与系统帧对齐的直连帧的号码，直连子帧号是与系统子帧对齐的直连子帧的号码。直连帧和直连子帧是在侧行链路sidelink中的帧结构。
在一些实施方式中，该直连帧号是中继设备根据系统帧号确定得到的，同样可以理解的是，直连子帧号也可以是中继设备根据系统子帧号确定得到的。可选地，该直连子帧号也可以是中继设备根据直连帧号确定得到的，应理解，也可以采用系统约定等其他方式来确定直连帧号和/或直连子帧号，本申请对此不做限定。
也就是，对于第一种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的系统帧的系统帧号SFN，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统帧号SFN确定的，与该系统信息所在的系统帧对齐的直连帧的直连帧号DFN。
对于第二种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的系统子帧的系统子帧号，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统子帧号确定的，与该系统信息所在的系统子帧对齐的直连子帧的直连子帧号。
对于第三种可能的实施方式，该系统信息的发送时间信息包括：网络设备发送该系统信息的系统信息窗口所在的系统帧的系统帧号SFN，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统帧号SFN确定的，与该系统信息窗口所在的系统帧对齐的直连帧的直连帧号DFN。其中，该系统信息窗口所在的帧，可以是该系统信息窗口的结束边界所在的帧，也可以是该系统信息窗口的起始边界所在的帧。
对于其余的可能的实施方式来说，与上述三种可能实施方式相类似，在此不在赘述。
在一些实施方式中，该参考信息用于指示该系统信息的发送时间信息中的系统帧的结束边界所对应的时刻。
在一些实施方式中，当该系统信息的发送时间信息中包括直连帧号或者直连子帧号时，该参考信息用于指示该系统信息的发送时间信息中的直连帧的结束边界所对应的时刻。
在一些实施方式中，该参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
也就是，在一些实施方式中，该参考信息用于指示，该系统信息由网络设备发送时所在的系统帧的结束边界所对应的时刻，或者，该参考信息用于指示，网络设备发送该系统信息的SI窗口所在的系统帧的结束边界所对应的时刻。
在一些实施方式中，当该系统信息的发送时间信息中包括直连帧号或者直连子帧号时，该参考信息用于指示，直连帧的结束边界所对应的时刻，该直连帧与该系统信息由网络设备发送时所在的系统帧对齐。
应理解，当系统信息的发送时间信息包括直连子帧号时，该直连子帧号指示了对应的直连子帧所属的直连帧，以及对应直连子帧在该直连帧中的位置。从而，基于发送时间信息中的直连子帧号，可以确定出所属直连帧。
在一些实施方式中，该参考信息用于指示，SI窗口的结束边界所对应的时刻，该SI窗口是网络设备发送该系统信息的SI窗口。
在本申请实施例中，远端终端设备在接收中继终端设备发送的系统信息之前，可以根据自身需求向中继终端设备发送系统信息请求，中继终端设备可以根据该系统信息请求获取对应的系统信息，并发送给远端终端设备。
步骤202，根据该系统信息和该系统信息的发送时间信息计算参考时间。
终端设备能够根据该系统信息和该系统信息的发送时间信息，计算出参考时间，特别地，终端设备能够根据该系统信息中的参考信息和该系统信息的发送时间信息，计算出参考时间。
可以理解的是，终端设备根据该系统信息的发送时间信息，能够确定该系统信息由网络设备发送时在时域资源中的位置，终端设备根据该参考信息能够确定该系统信息由网络设备发送时的时域资源位置所对应的时刻，因此，终端设备基于参考信息和系统信息的发送时间信息，可以计算出参考时间。
在本申请实施例中，终端设备在计算出参考时间之后，会将该参考时间发送给该终端设备的高层，终端设备的高层能够根据该参考时间校准时钟，进行时钟同步。
可选地，终端设备的高层为NAS层(Non-Access Stratum，非接入层)或者应用层。
综上，通过接收中继终端设备发送的系统信息和辅助信息，该辅助信息包括系统信息的发送时间信息，根据该系统信息和该系统信息的发送时间信息计算参考时间，使得终端设备在不与网络设备直接相连的情况下，也能够计算出参考时间，从而进行时钟同步，辅助GPS定位，有效提高了终端设备定位的精确性和鲁棒性。
请参见图3，图3是本申请实施例提供的一种时钟同步方法的流程示意图。需要说明的是，本申请实施例的时钟同步方法由终端设备执行。如图3所示，该方法可以包括如下步骤：
步骤301，接收中继终端设备发送的系统信息和辅助信息，该辅助信息包括系统信息的发送时间信息。
其中，系统信息是由网络设备发送至中继终端设备，再由中继终端设备转发至远端终端设备的。网络设备在发送系统信息时，该系统信息会在一个时域窗口内传输，该时域窗口为系统信息(SI)窗口。
可选地，该系统信息为系统信息块SIB9。
系统信息可以包括参考信息，其中，参考信息是时间参考信息，能够指示一个时刻，该时刻与网络设备发送该系统信息的时间相关，参考信息指示的是该系统信息由网络设备发送时所在的时域资源的位置所对应的时刻。
辅助信息是由中继终端设备确定的，其中包括系统信息的发送时间信息。
在一些实施方式中，该系统信息的发送时间信息包括下列中的至少一种：该系统信息由网络设备发送时所在的帧的帧号；该系统信息由网络设备发送时所在的子帧的子帧号；系统信息窗口所在的帧的帧号。
可选地，上述帧号可以为系统帧号SFN，也可以为直连帧号DFN，上述子帧号可以为系统子帧号，也可以为直连子帧号。
其中，直连帧号DFN是与系统帧对齐的直连帧的号码，直连子帧号是与系统子帧对齐的直连子帧的号码。直连帧和直连子帧是在侧行链路sidelink中的帧结构。
在一些实施方式中，该直连帧号是中继设备根据系统帧号确定得到的，同样可以理解的是，直连子帧号也可以是中继设备根据系统子帧号确定得到的。可选地，该直连子帧号也可以是中继设备根据直连帧号确定得到的，应理解，也可以采用系统约定等其他方式来确定直连帧号和/或直连子帧号，本申请对此不做限定。
也就是，作为第一种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的系统帧的系统帧号SFN，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统帧号SFN确定的，与该系统信息所在的系统帧对齐的直连帧的直连帧号DFN。
作为第二种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的系统子帧的系统子帧号，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统子帧号确定的，与该系统信息所在的系统子帧对齐的直连子帧的直连子帧号。
作为第三种可能的实施方式，该系统信息的发送时间信息包括：网络设备发送该系统信息的系统信息窗口所在的系统帧的系统帧号SFN，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统帧号SFN确定的，与该系统信息窗口所在的系统帧对齐的直连帧的直连帧号DFN。其中，该系统 信息窗口所在的帧，可以是该系统信息窗口的结束边界所在的帧，也可以是该系统信息窗口的起始边界所在的帧。
如先前实施例中所述的，系统信息的发送时间信息可以包括该系统信息由网络设备发送时所在的帧的帧号、该系统信息由网络设备发送时所在的子帧的子帧号、系统信息窗口所在的帧的帧号中的一种或多种，因此，对于帧号为系统帧号或与系统帧号对齐的直连帧号的情况以及对于子帧号为系统子帧号或与系统子帧号对齐的直连子帧号的情况，与前三种可能实施方式相类似，在此不在赘述。
在一些实施方式中，该参考信息用于指示该系统信息的发送时间信息中的系统帧的结束边界所对应的时刻。
在一些实施方式中，当该系统信息的发送时间信息中包括直连帧号或者直连子帧号时，该参考信息用于指示该系统信息的发送时间信息中的直连帧的结束边界所对应的时刻。
在一些实施方式中，该参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
也就是，在一些实施方式中，该参考信息用于指示，该系统信息由网络设备发送时所在的系统帧的结束边界所对应的时刻，或者，该参考信息用于指示，网络设备发送该系统信息的SI窗口所在的系统帧的结束边界所对应的时刻。
在一些实施方式中，当该系统信息的发送时间信息中包括直连帧号或者直连子帧号时，该参考信息用于指示，直连帧的结束边界所对应的时刻，该直连帧与该系统信息由网络设备发送时所在的系统帧对齐。
应理解，当系统信息的发送时间信息包括直连子帧号时，该直连子帧号指示了对应的直连子帧所属的直连帧，以及对应直连子帧在该直连帧中的位置。从而，基于发送时间信息中的直连子帧号，可以确定出所属直连帧。
在一些实施方式中，该参考信息用于指示，SI窗口的结束边界所对应的时刻，该SI窗口是网络设备发送该系统信息的SI窗口。
在本申请实施例中，远端终端设备在接收中继终端设备发送的系统信息之前，可以根据自身需求向中继终端设备发送系统信息请求，中继终端设备可以根据该系统信息请求获取对应的系统信息，并发送给远端终端设备。
步骤302，根据该系统信息和该系统信息的发送时间信息计算参考时间。
终端设备能够根据该系统信息和该系统信息的发送时间信息，计算出参考时间，特别地，终端设备能够根据该系统信息中的参考信息和该系统信息的发送时间信息，计算出参考时间。
可以理解的是，终端设备根据该系统信息的发送时间信息，能够确定该系统信息由网络设备发送时在时域资源中的位置，终端设备根据该参考信息能够确定该系统信息由网络设备发送时的时域资源位置所对应的时刻，因此，终端设备基于参考信息和系统信息的发送时间信息，可以计算出参考时间。
步骤303，将该参考时间发送给该终端设备的高层。
终端设备在计算出参考时间之后，会将该参考时间发送给该终端设备的高层，终端设备的高层能够根据该参考时间校准时钟，进行时钟同步。
可选地，终端设备的高层为NAS层(Non-Access Stratum，非接入层)或者应用层。
综上，通过接收中继终端设备发送的系统信息和辅助信息，该辅助信息包括系统信息的发送时间信 息，根据该系统信息和该系统信息的发送时间信息计算参考时间，将该参考时间发送给该终端设备的高层，使得终端设备在不与网络设备直接相连的情况下，也能够计算出参考时间，从而进行时钟同步，辅助GPS定位，有效提高了终端设备定位的精确性和鲁棒性。
请参见图4，图4是本申请实施例提供的一种时钟同步方法的流程示意图。需要说明的是，本申请实施例的时钟同步方法由中继终端设备执行。如图4所示，该方法可以包括如下步骤：
步骤401，向远端终端设备发送系统信息和辅助信息，该辅助信息包括系统信息的发送时间信息。
该系统信息和该系统信息的发送时间信息，用于远端终端设备计算参考时间，也就是，远端终端设备根据接收到的系统信息和辅助信息，能够计算出参考时间，从而进一步能够将该参考时间发送给高层，进行时钟同步。
其中，系统信息是由网络设备发送至中继终端设备，再由中继终端设备转发至远端终端设备的。网络设备在发送系统信息时，该系统信息会在一个时域窗口内传输，该时域窗口为系统信息(SI)窗口。
可选地，该系统信息为系统信息块SIB9。
在一些实施方式中，系统信息可以包括参考信息，其中，参考信息是时间参考信息，能够指示一个时刻，该时刻与网络设备发送该系统信息的时间相关，参考信息指示的是该系统信息由网络设备发送时所在的时域资源的位置所对应的时刻。特别地，远端终端设备能够根据该系统信息中的参考信息和该系统信息的发送时间信息，计算出参考时间。
辅助信息是由中继终端设备确定的，其中包括系统信息的发送时间信息。
可以理解的是，中继终端设备能够接收网络设备发送的系统信息，并能够根据接收到的系统信息，确定该系统信息的发送时间信息。
在一些实施方式中，该系统信息的发送时间信息包括下列中的至少一种：该系统信息由网络设备发送时所在的帧的帧号；该系统信息由网络设备发送时所在的子帧的子帧号；系统信息窗口所在的帧的帧号。
也就是，作为第一种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的帧的帧号。
作为第二种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的子帧的子帧号。
作为第三种可能的实施方式，该系统信息的发送时间信息包括：系统信息窗口所在的帧的帧号。
该系统信息窗口所在的帧，可以是该系统信息窗口的结束边界所在的帧，也可以是该系统信息窗口的起始边界所在的帧。
作为第四种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的帧的帧号，和，该系统信息由网络设备发送时所在的子帧的子帧号。
作为第五种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的帧的帧号，和，系统信息窗口所在的帧的帧号。
作为第六种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的子帧的子帧号，和，系统信息窗口所在的帧的帧号。
作为第七种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在 的帧的帧号，该系统信息由网络设备发送时所在的子帧的子帧号，以及系统信息窗口所在的帧的帧号。
综上所述，系统信息的发送时间信息可以包括该系统信息由网络设备发送时所在的帧的帧号、该系统信息由网络设备发送时所在的子帧的子帧号、系统信息窗口所在的帧的帧号中的一种或多种。
可选地，上述帧号可以为系统帧号SFN，也可以为直连帧号DFN，类似地，上述子帧号可以为系统子帧号，也可以为直连子帧号。
其中，直连帧号DFN是与系统帧对齐的直连帧的号码，直连子帧号是与系统子帧对齐的直连子帧的号码。直连帧和直连子帧是在侧行链路sidelink中的帧结构。
在一些实施方式中，该直连帧号是中继设备根据系统帧号确定得到的，同样可以理解的是，直连子帧号也可以是中继设备根据系统子帧号确定得到的。可选地，该直连子帧号也可以是中继设备根据直连帧号确定得到的，应理解，也可以采用系统约定等其他方式来确定直连帧号和/或直连子帧号，本申请对此不做限定。
也就是，对于第一种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的系统帧的系统帧号SFN，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统帧号SFN确定的，与该系统信息所在的系统帧对齐的直连帧的直连帧号DFN。
对于第二种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的系统子帧的系统子帧号，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统子帧号确定的，与该系统信息所在的系统子帧对齐的直连子帧的直连子帧号。
对于第三种可能的实施方式，该系统信息的发送时间信息包括：网络设备发送该系统信息的系统信息窗口所在的系统帧的系统帧号SFN，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统帧号SFN确定的，与该系统信息窗口所在的系统帧对齐的直连帧的直连帧号DFN。其中，该系统信息窗口所在的帧，可以是该系统信息窗口的结束边界所在的帧，也可以是该系统信息窗口的起始边界所在的帧。
对于其余的可能的实施方式来说，与上述三种可能实施方式相类似，在此不在赘述。
在一些实施方式中，该参考信息用于指示该系统信息的发送时间信息中的系统帧的结束边界所对应的时刻。
在一些实施方式中，当该系统信息的发送时间信息中包括直连帧号或者直连子帧号时，该参考信息用于指示该系统信息的发送时间信息中的直连帧的结束边界所对应的时刻。
在一些实施方式中，该参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
也就是，在一些实施方式中，该参考信息用于指示，该系统信息由网络设备发送时所在的系统帧的结束边界所对应的时刻，或者，该参考信息用于指示，网络设备发送该系统信息的SI窗口所在的系统帧的结束边界所对应的时刻。
在一些实施方式中，当该系统信息的发送时间信息中包括直连帧号或者直连子帧号时，该参考信息用于指示，直连帧的结束边界所对应的时刻，该直连帧与该系统信息由网络设备发送时所在的系统帧对齐。
应理解，当系统信息的发送时间信息包括直连子帧号时，该直连子帧号指示了对应的直连子帧所属的直连帧，以及对应直连子帧在该直连帧中的位置。从而，基于发送时间信息中的直连子帧号，可以确 定出所属直连帧。
在一些实施方式中，该参考信息用于指示，SI窗口的结束边界所对应的时刻，该SI窗口是网络设备发送该系统信息的SI窗口。
在本申请实施例中，中继终端设备可以接收远端终端设备发送的系统信息请求，该系统信息请求是远端终端设备根据自身需求确定的，中继终端设备可以根据该系统信息请求获取对应的系统信息，并发送给远端终端设备。
综上，通过向远端终端设备发送系统信息和辅助信息，该辅助信息包括系统信息的发送时间信息，使远端终端设备能够根据该系统信息和该系统信息的发送时间信息计算参考时间，使得终端设备在不与网络设备直接相连的情况下，也能够计算出参考时间，从而进行时钟同步，辅助GPS定位，有效提高了终端设备定位的精确性和鲁棒性。
请参见图5，图5是本申请实施例提供的一种时钟同步方法的流程示意图。需要说明的是，本申请实施例的时钟同步方法由中继终端设备执行。如图5所示，该方法可以包括如下步骤：
步骤501，接收远端终端设备发送的系统信息请求。
远端终端设备能够根据自身的需求，比如没有存储该系统信息，向中继终端设备发送系统信息请求。
步骤502，获取该系统信息请求对应的系统信息。
中继终端设备根据接收到的该系统信息请求，获取对应的系统信息。该系统信息是由网络设备发送给中继终端设备的。
中继终端设备在获取到该系统信息之后，能够通过侧行链路向远端终端设备发送该系统信息。
步骤503，向远端终端设备发送系统信息和辅助信息，该辅助信息包括系统信息的发送时间信息。
该系统信息和该系统信息的发送时间信息，用于远端终端设备计算参考时间，也就是，远端终端设备根据接收到的系统信息和辅助信息，能够计算出参考时间，从而进一步能够将该参考时间发送给高层，进行时钟同步。
其中，系统信息是由网络设备发送至中继终端设备，再由中继终端设备转发至远端终端设备的。网络设备在发送系统信息时，该系统信息会在一个时域窗口内传输，该时域窗口为系统信息(SI)窗口。
可选地，该系统信息为系统信息块SIB9。
系统信息可以包括参考信息，其中，参考信息是时间参考信息，能够指示一个时刻，该时刻与网络设备发送该系统信息的时间相关，参考信息指示的是该系统信息由网络设备发送时所在的时域资源的位置所对应的时刻。特别地，远端终端设备能够根据该系统信息中的参考信息和该系统信息的发送时间信息，计算出参考时间。
辅助信息是由中继终端设备确定的，其中包括系统信息的发送时间信息。
可以理解的是，中继终端设备能够接收网络设备发送的系统信息，并能够根据接收到的系统信息，确定该系统信息的发送时间信息。
在一些实施方式中，该系统信息的发送时间信息包括下列中的至少一种：该系统信息由网络设备发送时所在的帧的帧号；该系统信息由网络设备发送时所在的子帧的子帧号；系统信息窗口所在的帧的帧号。
可选地，上述帧号可以为系统帧号SFN，也可以为直连帧号DFN，类似地，上述子帧号可以为系 统子帧号，也可以为直连子帧号。
其中，直连帧号DFN是与系统帧对齐的直连帧的号码，直连子帧号是与系统子帧对齐的直连子帧的号码。直连帧和直连子帧是在侧行链路sidelink中的帧结构。
在一些实施方式中，该直连帧号是中继设备根据系统帧号确定得到的，同样可以理解的是，直连子帧号也可以是中继设备根据系统子帧号确定得到的。可选地，该直连子帧号也可以是中继设备根据直连帧号确定得到的，应理解，也可以采用系统约定等其他方式来确定直连帧号和/或直连子帧号，本申请对此不做限定。
也就是，作为第一种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的系统帧的系统帧号SFN，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统帧号SFN确定的，与该系统信息所在的系统帧对齐的直连帧的直连帧号DFN。
作为第二种可能的实施方式，该系统信息的发送时间信息包括：该系统信息由网络设备发送时所在的系统子帧的系统子帧号，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统子帧号确定的，与该系统信息所在的系统子帧对齐的直连子帧的直连子帧号。
作为第三种可能的实施方式，该系统信息的发送时间信息包括：网络设备发送该系统信息的系统信息窗口所在的系统帧的系统帧号SFN，或者，该系统信息的发送时间信息包括：中继终端设备根据该系统帧号SFN确定的，与该系统信息窗口所在的系统帧对齐的直连帧的直连帧号DFN。其中，该系统信息窗口所在的帧，可以是该系统信息窗口的结束边界所在的帧，也可以是该系统信息窗口的起始边界所在的帧。
如先前实施例中所述的，系统信息的发送时间信息可以包括该系统信息由网络设备发送时所在的帧的帧号、该系统信息由网络设备发送时所在的子帧的子帧号、系统信息窗口所在的帧的帧号中的一种或多种，因此，对于帧号为系统帧号或与系统帧号对齐的直连帧号的情况以及对于子帧号为系统子帧号或与系统子帧号对齐的直连子帧号的情况，与上述三种可能实施方式相类似，在此不在赘述。
在一些实施方式中，该参考信息用于指示该系统信息的发送时间信息中的系统帧的结束边界所对应的时刻。
在一些实施方式中，当该系统信息的发送时间信息中包括直连帧号或者直连子帧号时，该参考信息用于指示该系统信息的发送时间信息中的直连帧的结束边界所对应的时刻。
在一些实施方式中，该参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
也就是，在一些实施方式中，该参考信息用于指示，该系统信息由网络设备发送时所在的系统帧的结束边界所对应的时刻，或者，该参考信息用于指示，网络设备发送该系统信息的SI窗口所在的系统帧的结束边界所对应的时刻。
在一些实施方式中，当该系统信息的发送时间信息中包括直连帧号或者直连子帧号时，该参考信息用于指示，直连帧的结束边界所对应的时刻，该直连帧与该系统信息由网络设备发送时所在的系统帧对齐。
应理解，当系统信息的发送时间信息包括直连子帧号时，该直连子帧号指示了对应的直连子帧所属的直连帧，以及对应直连子帧在该直连帧中的位置。从而，基于发送时间信息中的直连子帧号，可以确定出所属直连帧。
在一些实施方式中，该参考信息用于指示，SI窗口的结束边界所对应的时刻，该SI窗口是网络设备发送该系统信息的SI窗口。
综上，通过接收远端终端设备发送的系统信息请求，获取该系统信息请求对应的系统信息，向远端终端设备发送系统信息和辅助信息，该辅助信息包括系统信息的发送时间信息，使远端终端设备能够根据该系统信息和该系统信息的发送时间信息计算参考时间，使得终端设备在不与网络设备直接相连的情况下，也能够计算出参考时间，从而进行时钟同步，辅助GPS定位，有效提高了终端设备定位的精确性和鲁棒性。
与上述几种实施例提供的时钟同步方法相对应，本申请还提供一种时钟同步装置，由于本申请实施例提供的时钟同步装置与上述几种实施例提供的方法相对应，因此在时钟同步方法的实施方式也适用于下述实施例提供的时钟同步装置，在下述实施例中不再详细描述。
请参见图6，图6为本申请实施例提供的一种时钟同步装置的结构示意图。
如图6所示，该时钟同步装置600包括：收发单元610和处理单元620，其中：
收发单元610，用于接收中继终端设备发送的系统信息和辅助信息所述辅助信息包括系统信息的发送时间信息；
处理单元620，用于根据所述系统信息和所述系统信息的发送时间信息计算参考时间。
可选地，所述系统信息的发送时间信息包括下列中的至少一种：
所述系统信息由网络设备发送时所在的帧的帧号；
所述系统信息由网络设备发送时所在的子帧的子帧号；
系统信息窗口所在的帧的帧号，所述系统信息窗口用于所述网络设备发送所述系统信息。
可选地，所述帧号为系统帧号或者与所述系统帧对齐的直连帧的直连帧号。
可选地，所述子帧号为系统子帧号或者与所述系统子帧对齐的直连子帧的直连子帧号。
可选地，所述直连帧号是由所述中继终端设备根据所述系统帧号得到的。
可选地，所述系统信息包括参考信息；响应于所述帧号为直连帧号或者所述子帧号为所述直连子帧号，所述参考信息用于指示所述系统信息的发送时间信息中的直连帧的结束边界所对应的时刻；或者，所述参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
可选地，所述处理单元620还用于：将所述参考时间发送给所述远端终端设备的高层。
可选地，所述系统信息为系统信息块SIB9。
本实施例的时钟同步装置，可以通过接收中继终端设备发送的系统信息和辅助信息，该辅助信息包括系统信息的发送时间信息，根据该系统信息和该系统信息的发送时间信息计算参考时间，使得终端设备在不与网络设备直接相连的情况下，也能够计算出参考时间，从而进行时钟同步，辅助GPS定位，有效提高了终端设备定位的精确性和鲁棒性。
请参见图7，图7为本申请实施例提供的一种时钟同步装置的结构示意图。
如图7所示，该时钟同步装置700包括：收发单元710，其中：
收发单元710，用于向中继设备发送系统信息和辅助信息，所述辅助信息包括系统信息的发送时间信息；
所述参考信息和所述系统信息的发送时间信息，用于所述远端终端设备计算参考时间。
可选地，所述系统信息的发送时间信息包括下列中的至少一种：
所述系统信息由网络设备发送时所在的帧的帧号；
所述系统信息由网络设备发送时所在的子帧的子帧号；
系统信息窗口所在的帧的帧号，所述系统信息窗口用于所述网络设备发送所述系统信息。
可选地，所述帧号为系统帧号或者与所述系统帧对齐的直连帧的直连帧号。
可选地，所述子帧号为系统子帧号或者与所述系统子帧对齐的直连子帧的直连子帧号。
可选地，所述直连帧号是由所述中继终端设备根据所述系统帧号得到的。
可选地，所述系统信息包括参考信息；响应于所述帧号为直连帧号或者所述子帧号为所述直连子帧号，所述参考信息用于指示所述系统信息的发送时间信息中的直连帧的结束边界所对应的时刻；或者，所述参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
可选地，所述系统信息为系统信息块SIB9。
本实施例的时钟同步装置，可以通过向远端终端设备发送系统信息和辅助信息，该系统信息中包括参考信息，该辅助信息包括系统信息的发送时间信息，使远端终端设备能够根据该参考信息和该系统信息的发送时间信息计算参考时间，使得终端设备在不与网络设备直接相连的情况下，也能够计算出参考时间，从而进行时钟同步，辅助GPS定位，有效提高了终端设备定位的精确性和鲁棒性。
为了实现上述实施例，本申请实施例还提出一种通信装置，包括：处理器和存储器，存储器中存储有计算机程序，处理器执行所述存储器中存储的计算机程序，以使装置执行图2至图3实施例所示的方法。
为了实现上述实施例，本申请实施例还提出一种通信装置，包括：处理器和存储器，存储器中存储有计算机程序，处理器执行所述存储器中存储的计算机程序，以使装置执行图4至图5实施例所示的方法。
为了实现上述实施例，本申请实施例还提出一种通信装置，包括：处理器和接口电路，接口电路，用于接收代码指令并传输至处理器，处理器，用于运行所述代码指令以执行图2至图3实施例所示的方法。
为了实现上述实施例，本申请实施例还提出一种通信装置，包括：处理器和接口电路，接口电路，用于接收代码指令并传输至处理器，处理器，用于运行所述代码指令以执行图4至图5实施例所示的方法。
请参见图8，图8是本申请实施例提供的另一种时钟同步装置的结构示意图。时钟同步装置800可以是远端终端设备，也可以是中继终端设备，也可以是支持远端终端设备实现上述方法的芯片、芯片系统、或处理器等，还可以是支持中继终端设备实现上述方法的芯片、芯片系统、或处理器等。该装置可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
时钟同步装置800可以包括一个或多个处理器801。处理器801可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对时钟同步装置(如，基站、基带芯片，终端设备、终端设备芯片，DU或CU等) 进行控制，执行计算机程序，处理计算机程序的数据。
可选的，时钟同步装置800中还可以包括一个或多个存储器802，其上可以存有计算机程序803，处理器801执行计算机程序803，以使得时钟同步装置800执行上述方法实施例中描述的方法。计算机程序803可能固化在处理器801中，该种情况下，处理器801可能由硬件实现。
可选的，存储器802中还可以存储有数据。时钟同步装置800和存储器802可以单独设置，也可以集成在一起。
可选的，时钟同步装置800还可以包括收发器805、天线806。收发器805可以称为收发单元、收发机、或收发电路等，用于实现收发功能。收发器805可以包括接收器和发送器，接收器可以称为接收机或接收电路等，用于实现接收功能；发送器可以称为发送机或发送电路等，用于实现发送功能。
可选的，时钟同步装置800中还可以包括一个或多个接口电路807。接口电路807用于接收代码指令并传输至处理器801。处理器801运行代码指令以使时钟同步装置800执行上述方法实施例中描述的方法。
在一种实现方式中，处理器801中可以包括用于实现接收和发送功能的收发器。例如该收发器可以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在一种实现方式中，时钟同步装置800可以包括电路，电路可以实现前述方法实施例中发送或接收或者通信的功能。本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor，PMOS)、双极结型晶体管(bipolar junction transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的时钟同步装置可以是远端终端设备或者中继终端设备，但本申请中描述的时钟同步装置的范围并不限于此，而且时钟同步装置的结构可以不受图6-图7的限制。时钟同步装置可以是独立的设备或者可以是较大设备的一部分。例如时钟同步装置可以是：
(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据，计算机程序的存储部件；
(3)ASIC，例如调制解调器(Modem)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；
(6)其他等等。
对于时钟同步装置可以是芯片或芯片系统的情况，可参见图9所示的芯片的结构示意图。图9所示的芯片包括处理器901和接口902。其中，处理器901的数量可以是一个或多个，接口902的数量可以 是多个。
对于芯片用于实现本申请实施例中远端终端设备的功能的情况：
接口902，用于代码指令并传输至处理器；
处理器901，用于运行代码指令以执行如图2至图3的方法。
对于芯片用于实现本申请实施例中中继终端设备的功能的情况：
接口902，用于代码指令并传输至处理器；
处理器901，用于运行代码指令以执行如图4至图5的方法。
可选的，芯片还包括存储器903，存储器903用于存储必要的计算机程序和数据。
本领域技术人员还可以了解到本申请实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件，或两者的结合进行实现。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员可以对于每种特定的应用，可以使用各种方法实现的功能，但这种实现不应被理解为超出本申请实施例保护的范围。
本申请实施例还提供一种通信系统，该系统包括前述图6-图7实施例中作为远端终端设备的时钟同步装置和作为中继终端设备的时钟同步装置，或者，该系统包括前述图8实施例中作为远端终端设备的时钟同步装置和作为中继终端设备的时钟同步装置。
本申请还提供一种可读存储介质，其上存储有指令，该指令被计算机执行时实现上述任一方法实施例的功能。
本申请还提供一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。计算机程序产品包括一个或多个计算机程序。在计算机上加载和执行计算机程序时，全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机程序可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机程序可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以理解：本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围，也表示先后顺序。
本申请中的至少一个还可以描述为一个或多个，多个可以是两个、三个、四个或者更多个，本申请不做限制。在本申请实施例中，对于一种技术特征，通过“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”等区分该种技术特征中的技术特征，该“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”描述的技术特征间无先后顺序或者大小顺序。
本申请中各表所示的对应关系可以被配置，也可以是预定义的。各表中的信息的取值仅仅是举例， 可以配置为其他值，本申请并不限定。在配置信息与各参数的对应关系时，并不一定要求必须配置各表中示意出的所有对应关系。例如，本申请中的表格中，某些行示出的对应关系也可以不配置。又例如，可以基于上述表格做适当的变形调整，例如，拆分，合并等等。上述各表中标题示出参数的名称也可以采用通信装置可理解的其他名称，其参数的取值或表示方式也可以通信装置可理解的其他取值或表示方式。上述各表在实现时，也可以采用其他的数据结构，例如可以采用数组、队列、容器、栈、线性表、指针、链表、树、图、结构体、类、堆、散列表或哈希表等。
本申请中的预定义可以理解为定义、预先定义、存储、预存储、预协商、预配置、固化、或预烧制。
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。
应当理解，可以使用上面所示的各种形式的流程，重新排序、增加或删除步骤。例如，本申请实施例中记载的各步骤可以并行地执行也可以顺序地执行也可以不同的次序执行，只要能够实现本发明公开的技术方案所期望的结果，本文在此不进行限制。
上述具体实施方式，并不构成对本发明保护范围的限制。本领域技术人员应该明白的是，根据设计要求和其他因素，可以进行各种修改、组合、子组合和替代。任何在本发明的精神和原则之内所作的修改、等同替换和改进等，均应包含在本发明保护范围之内。

Claims (23)

  1. 一种时钟同步方法，其特征在于，所述方法由远端终端设备执行，所述方法包括：
    接收中继终端设备发送的系统信息和辅助信息，所述辅助信息包括系统信息的发送时间信息；
    根据所述系统信息和所述系统信息的发送时间信息计算参考时间。
  2. 根据权利要求1所述的方法，其特征在于，所述系统信息的发送时间信息包括下列中的至少一种：
    所述系统信息由网络设备发送时所在的帧的帧号；
    所述系统信息由网络设备发送时所在的子帧的子帧号；
    系统信息窗口所在的帧的帧号，所述系统信息窗口用于所述网络设备发送所述系统信息。
  3. 根据权利要求2所述的方法，其特征在于，所述帧号为系统帧号或者与所述系统帧对齐的直连帧的直连帧号。
  4. 根据权利要求2所述的方法，其特征在于，所述子帧号为系统子帧号或者与所述系统子帧对齐的直连子帧的直连子帧号。
  5. 根据权利要求3所述的方法，其特征在于，所述直连帧号是由所述中继终端设备根据所述系统帧号得到的。
  6. 根据权利要求3或4所述的方法，其特征在于，所述系统信息包括参考信息；响应于所述帧号为直连帧号或者所述子帧号为所述直连子帧号，所述参考信息用于指示所述系统信息的发送时间信息中的直连帧的结束边界所对应的时刻；或者，所述参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
  7. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    将所述参考时间发送给所述远端终端设备的高层。
  8. 根据权利要求1-5中的任一项所述的方法，其特征在于，所述系统信息为系统信息块SIB9。
  9. 一种时钟同步方法，其特征在于，所述方法由中继终端设备执行，所述方法包括：
    向远端终端设备发送系统信息和辅助信息，所述辅助信息包括系统信息的发送时间信息；
    所述系统信息和所述系统信息的发送时间信息，用于所述远端终端设备计算参考时间。
  10. 根据权利要求9所述的方法，其特征在于，所述系统信息的发送时间信息包括下列中的至少一种：
    所述系统信息由网络设备发送时所在的帧的帧号；
    所述系统信息由网络设备发送时所在的子帧的子帧号；
    系统信息窗口所在的帧的帧号，所述系统信息窗口用于所述网络设备发送所述系统信息。
  11. 根据权利要求10所述的方法，其特征在于，所述帧号为系统帧号或者与所述系统帧对齐的直连帧的直连帧号。
  12. 根据权利要求10所述的方法，其特征在于，所述子帧号为系统子帧号或者与所述系统子帧对齐的直连子帧的直连子帧号。
  13. 根据权利要求11所述的方法，其特征在于，所述直连帧号是由所述中继终端设备根据所述系统帧号得到的。
  14. 根据权利要求11或12所述的方法，其特征在于，所述系统信息包括参考信息；响应于所述帧号为直连帧号或者所述子帧号为所述直连子帧号，所述参考信息用于指示所述系统信息的发送时间信息中的直连帧的结束边界所对应的时刻；或者，所述参考信息用于指示所述系统信息的发送时间信息中的系统信息窗口的结束边界所对应的时刻。
  15. 根据权利要求9-13中的任一项所述的方法，其特征在于，所述系统信息为系统信息块SIB9。
  16. 一种时钟同步装置，其特征在于，所述装置应用于远端终端设备，所述装置包括：
    收发单元，用于接收中继终端设备发送的系统信息和辅助信息，所述辅助信息包括系统信息的发送时间信息；
    处理单元，用于根据所述系统信息和所述系统信息的发送时间信息计算参考时间。
  17. 一种时钟同步装置，其特征在于，所述装置应用于中继终端设备，所述装置包括：
    收发单元，用于向中继设备发送系统信息和辅助信息，所述辅助信息包括系统信息的发送时间信息；
    所述系统信息和所述系统信息的发送时间信息，用于所述远端终端设备计算参考时间。
  18. 一种通信装置，其特征在于，所述装置包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行如权利要求1至8中的任一项所述的方法。
  19. 一种通信装置，其特征在于，所述装置包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行如权利要求9至15中的任一项所述的方法。
  20. 一种通信装置，其特征在于，包括：处理器和接口电路；
    所述接口电路，用于接收代码指令并传输至所述处理器；
    所述处理器，用于运行所述代码指令以执行如权利要求1至8中的任一项所述的方法。
  21. 一种通信装置，其特征在于，包括：处理器和接口电路；
    所述接口电路，用于接收代码指令并传输至所述处理器；
    所述处理器，用于运行所述代码指令以执行如权利要求9至15中的任一项所述的方法。
  22. 一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使如权利要求1至8中的任一项所述的方法被实现。
  23. 一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使如权利要求9至15中的任一项所述的方法被实现。
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