WO2017166045A1 - 同步方法、同步装置和同步源 - Google Patents

同步方法、同步装置和同步源 Download PDF

Info

Publication number
WO2017166045A1
WO2017166045A1 PCT/CN2016/077659 CN2016077659W WO2017166045A1 WO 2017166045 A1 WO2017166045 A1 WO 2017166045A1 CN 2016077659 W CN2016077659 W CN 2016077659W WO 2017166045 A1 WO2017166045 A1 WO 2017166045A1
Authority
WO
WIPO (PCT)
Prior art keywords
synchronization
source
synchronization signal
satellite system
signal
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2016/077659
Other languages
English (en)
French (fr)
Inventor
曾元清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
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 Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2016/077659 priority Critical patent/WO2017166045A1/zh
Priority to EP16895826.2A priority patent/EP3383103A4/en
Priority to KR1020187019862A priority patent/KR20180127309A/ko
Priority to US16/066,176 priority patent/US11051264B2/en
Priority to JP2018535869A priority patent/JP6759342B2/ja
Priority to CN201680074856.0A priority patent/CN108432304A/zh
Priority to TW106110453A priority patent/TWI753893B/zh
Publication of WO2017166045A1 publication Critical patent/WO2017166045A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • H04W56/0015Synchronization between nodes one node acting as a reference for the others
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present invention relates to the field of communications and, more particularly, to a synchronization method, a synchronization device, and a synchronization source.
  • the device utilizes synchronization of the cellular network to implement device to device (D2D) synchronization.
  • D2D device to device
  • the embodiment of the present application provides a synchronization method, a synchronization device, and a synchronization source, which can be compatible with a satellite system and a cellular network to implement synchronization of the synchronization device.
  • a synchronization method comprising: a synchronization device determining at least one synchronization source that transmits a synchronization signal; and when the at least one synchronization source includes at least one first synchronization source, based on each of the first synchronization sources a manner of selecting a synchronization signal, wherein the synchronization device selects a target synchronization source from the at least one first synchronization source; wherein the manner in which the first synchronization source selects a synchronization signal includes a first mode or a second mode, The first mode is to select the synchronization signals according to the first priority order, and the second mode is to select the synchronization signals according to the second priority order, wherein the first priority ranking is according to the correlation between the synchronization signals and the cellular network.
  • the sequencing of the synchronization signals, the second prioritization is the ordering of the synchronization signals according to the correlation of the synchronization signals with the satellite system; the synchronization device is synchronized with the target
  • the first prioritization includes: a synchronization signal directly from the network device, a synchronization signal from a terminal device directly synchronized with the network device, A synchronization signal of a terminal device that is indirectly synchronized with a network device.
  • the second prioritization comprises: a synchronization signal directly from the satellite system > The synchronization signal from the terminal device that is directly synchronized with the satellite system > the synchronization signal from the terminal device indirectly synchronized with the satellite system.
  • the first synchronization sequence includes the synchronization signal from the terminal device that is directly synchronized with the satellite system;
  • the first synchronization sequence is further configured to indicate that the terminal device that transmits the first synchronization sequence is directly synchronized with the satellite system, or that the terminal device that transmits the first synchronization sequence directly indicates that it is directly synchronized with the satellite system by using a broadcast signal.
  • the second synchronization sequence includes the synchronization signal from the terminal device indirectly synchronized with the satellite system; wherein the second synchronization sequence is further used to indicate that the terminal device transmitting the second synchronization sequence is indirectly
  • the satellite system is synchronized, or the terminal device transmitting the second synchronization sequence instructs itself to be indirectly synchronized with the satellite system by a broadcast signal.
  • a fourth possible implementation manner of the first aspect when the synchronization device is not within the coverage of the cellular network, and the satellite signal is received, Determining, by the synchronization device, the target synchronization source from the at least one first synchronization source, comprising: determining whether the manner in which the at least one first synchronization source selects the synchronization signal is the same; selecting synchronization according to the at least one first synchronization source Whether the signals are the same, and the target synchronization source is selected from the at least one first synchronization source.
  • a fifth possible implementation manner of the first aspect when the synchronization device is not within the coverage of the cellular network, and the satellite signal is received, When the manner of selecting the synchronization signals is the same for each of the first synchronization sources, the synchronization device selects the target synchronization source according to a third priority order; wherein the third priority ranking comprises: simultaneously with the cellular network and Synchronization source for satellite system synchronization > Synchronization source synchronized with the satellite system > Synchronization source synchronized with the network device.
  • the synchronization device when the synchronization device is not within the coverage of the cellular network, and the satellite signal is received, When the manner in which the synchronization signals are selected by the at least one first synchronization source are different, the synchronization device selects the target synchronization source according to a fourth priority order; wherein the fourth priority ranking comprises: following the Synchronization source that selects the synchronization signal and simultaneously synchronizes with the network device and the satellite system in the first mode > Synchronization source that selects the synchronization signal according to the second mode and simultaneously synchronizes with the network device and the satellite system > Selects the synchronization signal according to the second mode And a synchronization source synchronized with the satellite system > a synchronization source that selects the synchronization signal and synchronizes with the network device in the first manner.
  • the signal strength of the first synchronization source is greater than or equal to the first threshold.
  • the synchronization device when the at least one synchronization source does not include the first synchronization source Synchronized with the satellite system.
  • the ninth possible implementation manner of the first aspect when the synchronization device is not within the coverage of the cellular network, and the satellite signal cannot be received, Determining, by the synchronization device, the target synchronization source from the at least one first synchronization source, comprising: determining whether the manner in which the at least one first synchronization source selects the synchronization signal is the same; selecting synchronization according to the at least one first synchronization source Whether the signals are the same, and the target synchronization source is selected from the at least one first synchronization source.
  • the synchronization device when the synchronization device is not within the coverage of the cellular network, and the satellite signal cannot be received, the synchronization device selects the target synchronization source according to a fifth priority order; wherein the fifth priority ranking comprises: simultaneously with the network device and Synchronization source for satellite system synchronization > Synchronization source synchronized with network device > Synchronization source synchronized with the satellite system.
  • the synchronization device is not within the coverage of the cellular network, and the satellite signal cannot be received. And, when the manners of selecting the synchronization signals by the at least one first synchronization source are different, the synchronization device sorts according to the sixth priority, and selects the target synchronization source; wherein the sixth priority ranking includes: according to a synchronization source that selects a synchronization signal and simultaneously synchronizes with a network device and a satellite system > a synchronization source that selects a synchronization signal according to the first manner and synchronizes with the network device > selects a synchronization signal according to the second manner and simultaneously Synchronization source for synchronization of the network device and the satellite system> A synchronization source that selects the synchronization signal and synchronizes with the satellite system in accordance with the second mode.
  • the signal strength of the first synchronization source is greater than or equal to a second threshold.
  • the synchronization device is not within the coverage of the cellular network, and the satellite signal cannot be received. And, when the at least one synchronization source does not include the first synchronization source and includes at least one second synchronization source, the synchronization device selects the target synchronization according to a seventh priority order Source, the signal strength of the second synchronization source is less than a second threshold and greater than or equal to a third threshold; wherein the seventh priority ranking comprises: a synchronization source synchronized with the satellite system > not with the satellite system and not with the network device Synchronized synchronization source.
  • the satellite system is a global navigation satellite system (GNSS)
  • the synchronization device is an in-vehicle device.
  • GNSS global navigation satellite system
  • the at least one synchronization source includes at least one of a network device, a terminal device, and a satellite system. .
  • the second aspect provides a synchronization method, including: the synchronization device receives the indication information sent by the network device, where the indication information is used to indicate a manner in which the synchronization device selects a synchronization source, where the manner is the first mode or the second
  • the first mode is to select a synchronization signal according to a first priority order
  • the second mode is to select a synchronization signal according to a second priority order
  • the third mode is to sort according to the first priority
  • synchronization is an ordering of the synchronization signals according to the correlation of the synchronization signal with the cellular network
  • the second prioritization is according to the synchronization signal and the satellite system Correlation of the synchronization signals
  • the synchronization device selects a target synchronization source based on the indication information.
  • the synchronization device selects a target synchronization source based on the indication information, including: when the indication information indicates the first mode And if the synchronization device does not receive the synchronization signal related to the cellular network signal, the synchronization device selects the target synchronization source according to the second manner; or when the indication information indicates the second mode, if the The synchronization device does not receive a synchronization signal associated with the satellite system, and the synchronization device selects the target synchronization source in a first manner.
  • the synchronization device if the synchronization device does not receive the synchronization signal related to the cellular network signal at the first predetermined time And the synchronization device selects the target synchronization source according to the second manner; or if the synchronization device does not receive the synchronization signal related to the satellite system within the second predetermined time, the synchronization device selects the target according to the first manner Synchronization source.
  • the first priority ranking includes: a synchronization signal directly from a network device, Synchronization signal of terminal equipment synchronized with network equipment> from indirect and network The synchronization signal of the terminal device synchronized by the device.
  • the second prioritization includes: the synchronization signal generated by the satellite system is: directly from synchronizing with the satellite system The synchronization signal of the terminal device > the synchronization signal from the terminal device indirectly synchronized with the satellite system.
  • the synchronization signal in the first priority order is prioritized The level is higher than the priority of the synchronization signal in the second priority order, or the priority of the synchronization signal in the second priority order is higher than the priority of the synchronization signal in the first priority order.
  • a synchronization method including: a synchronization source determining a manner for acquiring a synchronization signal; and a manner of acquiring a synchronization signal by the synchronization source, including a first mode or a second mode, where the first mode is according to the first priority Sorting the synchronization signals, the second mode is selecting the synchronization signals according to the second priority order, wherein the first priority ordering is sorting the synchronization signals according to the correlation of the synchronization signals with the cellular network,
  • the second prioritization is an ordering of the synchronization signals according to the correlation between the synchronization signal and the satellite system; the synchronization source acquires the first synchronization signal according to the determined manner for acquiring the synchronization signal;
  • the first synchronization signal is synchronized; the synchronization source transmits a second synchronization signal and indication information, wherein the indication information is used to indicate a manner in which the synchronization source acquires the first synchronization signal.
  • the synchronization source transmits the synchronization signal and the indication information, including: transmitting a second synchronization signal that is implemented by using the first synchronization sequence; transmitting broadcast information, The broadcast information is used to indicate the indication information.
  • the synchronization source is a device that is directly synchronized with a satellite system, where the first synchronization sequence is included a sequence of the second synchronization signal transmitted by the synchronization source; or, the synchronization source is a device indirectly synchronized with a satellite system, and the first synchronization sequence is the second synchronization signal including the synchronization source transmission the sequence of.
  • the synchronization source transmitting the synchronization signal and the indication information, including: transmitting a second synchronization sequence,
  • the second synchronization sequence includes the second synchronization signal and the indication information.
  • the fourth aspect in the third aspect is a device directly synchronized with a satellite system, and the second synchronization sequence is a sequence including the second synchronization signal transmitted by the synchronization source; or the synchronization source is an indirect A device synchronized with a satellite system, the second synchronization sequence being a sequence of the second synchronization signal transmitted by the synchronization source.
  • the first priority ranking includes: a synchronization signal directly from a network device, The synchronization signal of the terminal device synchronized with the network device > the synchronization signal from the terminal device indirectly synchronized with the network device.
  • the second priority ordering comprises: a synchronization signal generated by a satellite system > from a direct satellite The synchronization signal of the system-synchronized terminal device > the synchronization signal from the terminal device indirectly synchronized with the satellite system.
  • the synchronization source determines a manner for acquiring the synchronization signal, including: according to the indication of the network device, The sync source determines the way in which the sync signal is acquired.
  • a terminal for performing the method of any of the foregoing first aspect or any optional implementation of the first aspect.
  • the communication device comprises a modular unit for performing the method of the first aspect or any of the possible implementations of the first aspect described above.
  • a synchronization apparatus for performing the method of any of the above-described first aspect or any alternative implementation of the first aspect.
  • the synchronization device comprises a modular unit for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • a synchronization apparatus for performing the method of any of the above alternative aspects of the second aspect or the second aspect.
  • the synchronization device comprises a modular unit for performing the method of any of the above-described second or second aspects of the second aspect.
  • a synchronization source for performing the method of any of the optional implementations of the third aspect or the third aspect above.
  • the synchronization source comprises a modular unit for performing the method of any of the possible implementations of the third aspect or the third aspect described above.
  • a synchronization apparatus comprising: a memory for storing an instruction, the processor for executing an instruction stored by the memory, and when the processor executes the instruction stored by the memory, Executing the method of causing the processor to perform the first aspect or any alternative implementation of the first aspect.
  • a synchronization apparatus comprising: a memory for storing instructions for executing instructions stored in the memory, and a processor, when the processor executes the instructions stored by the memory, Executing the method of causing the processor to perform the second aspect or any alternative implementation of the second aspect.
  • a synchronization source comprising: a memory for storing an instruction, the processor for executing an instruction stored by the memory, and when the processor executes the instruction stored by the memory, Executing the method of causing the processor to perform any of the optional aspects of the third aspect or the third aspect.
  • a computer storage medium having stored therein program code for indicating a method of performing the above first aspect or any alternative implementation of the first aspect.
  • a computer storage medium having stored therein program code for indicating a method of performing the second aspect or any alternative implementation of the second aspect.
  • a computer storage medium having stored therein program code for indicating a method of performing the third aspect or any optional implementation of the third aspect.
  • FIG. 1 is a schematic flowchart of a synchronization method according to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a synchronization method according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a synchronization method according to an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of a synchronization device in accordance with an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a synchronization device in accordance with an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a synchronization source in accordance with an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a synchronization device according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a synchronization device according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a synchronization source in accordance with an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • D2D communication may refer to vehicle to vehicle (V2V) communication, or V2X communication.
  • V2X communication can refer to any device with wireless receiving and transmitting capabilities, such as but not limited to slow moving wireless devices, fast moving in-vehicle devices, or network control nodes with wireless transmit and receive capabilities.
  • the embodiment of the present application may not be used for D2D communication, but is used for communication between the terminal and the cellular network.
  • the network device may be a base station (Base Transceiver Station, BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved Node B (eNB) in LTE. Or e-NodeB), which may also be a device for providing an access service in the 5G, which is not limited by the embodiment of the present invention.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved Node B
  • e-NodeB which may also be a device for providing an access service in the 5G, which is not limited by the embodiment of the present invention.
  • the satellite system may be a Global Navigation Satellite System (GNSS).
  • GNSS Global Navigation Satellite System
  • FIG. 1 is a schematic flowchart of a synchronization method 100 according to an embodiment of the present application. This method can be implemented by sync source #1.
  • the synchronization source determines the manner in which the synchronization signal is acquired.
  • the method for selecting a synchronization signal by the synchronization source includes a first mode or a second mode, where the first mode is to select a synchronization signal according to a first priority order, and the second mode is to select a synchronization signal according to a second priority order, where
  • the first priority ordering is in accordance with the synchronization signal and the cellular network signal Correlation
  • the ordering of the synchronization signals which is the ordering of the synchronization signals in accordance with the correlation of the synchronization signals with the satellite signals.
  • the first prioritization comprises: a synchronization signal directly from the network device > a synchronization signal from a device directly synchronized with the network device > a synchronization signal from a device indirectly synchronized with the network device.
  • the device that is indirectly synchronized with the network device refers to the synchronization signal that can obtain the network device indirectly, for example, the synchronization signal provided by the device at the edge of the network, and the synchronization signal provided by the device at the edge of the network is based on the synchronization directly received from the network device. signal.
  • the more the synchronization signal obtained directly from the cellular network the higher the priority. This is because each time the synchronization signal is forwarded, a certain error is accumulated. The more the number of times of forwarding, the larger the accumulated synchronization error and the worse the synchronization accuracy. Therefore, the more the synchronization signal is directly obtained from the cellular network. The higher the priority.
  • the second prioritization comprises: a satellite signal > a synchronization signal from a device that is directly synchronized with the satellite system > a synchronization signal from a device that is indirectly synchronized with the satellite system.
  • the device indirectly synchronized with the satellite system is that the synchronization source is not directly synchronized with the satellite system, but acquires a synchronization signal transmitted by the device directly synchronized with the satellite signal.
  • the synchronization source may determine a manner for acquiring the synchronization signal according to the indication of the network device.
  • the first synchronization signal is acquired according to the determined manner for acquiring the synchronization signal.
  • synchronization is performed in accordance with the first synchronization signal.
  • a second synchronization signal and indication information are transmitted, wherein the indication information is used to indicate a manner in which the synchronization source acquires the first synchronization signal.
  • the synchronization source #1 may transmit a first synchronization sequence and a broadcast message, the first synchronization sequence including the second synchronization signal, the broadcast message being used to indicate the indication information.
  • the first synchronization sequence may be identical to the second synchronization sequence.
  • the synchronization sequence only carries the synchronization signal, and the manner in which the synchronization source #1 is selected to select the synchronization signal may be transmitted by a broadcast message, for example, by transmitting a broadcast message through a synchronous broadcast channel.
  • the synchronization source #1 may transmit a second synchronization sequence, the second synchronization sequence including the second The synchronization signal and the indication information.
  • the synchronization sequence can be used not only to carry the synchronization signal, but also to indicate the manner in which the synchronization source selects the synchronization signal.
  • the synchronization sequence mentioned in the embodiment of the present application may include the following four sequences: a synchronization sequence for synchronizing the synchronization device with the cellular network and the satellite system; a synchronization sequence for synchronizing the synchronization device with the cellular network and not synchronizing with the satellite system; A synchronization sequence that synchronizes the device with the satellite signal and is not synchronized with the cellular network; the synchronization sequence transmitted by the synchronization source itself (the synchronization source is neither synchronized with the cellular network nor synchronized with the satellite system).
  • the synchronization sequence itself may indicate whether the synchronization source is synchronized with the cellular network and/or the satellite system.
  • the synchronization sequence referred to in the embodiments of the present application may also comprise two sequences including a sequence of synchronization signals from devices that are directly synchronized with the satellite system, and a sequence of synchronization signals from devices that are indirectly synchronized with the satellite system.
  • the synchronization sequence may only carry the synchronization signal.
  • the synchronization sequence not only carries the synchronization signal, but also indicates whether the synchronization source transmitting the synchronization signal is directly or indirectly synchronized with the cellular network and/or the satellite system, that is, whether the synchronization device can utilize the synchronization signal to implement the Network and/or satellite systems are synchronized directly or indirectly.
  • the broadcast signal may also be directly sent, and the broadcast signal indicates whether the synchronization source that transmits the synchronization signal is directly or indirectly synchronized with the cellular network and/or the satellite system, that is, whether the synchronization device can utilize
  • the synchronization signal is implemented directly or indirectly with the cellular network and/or satellite system.
  • the synchronization of the device with the cellular network and the satellite system may mean that the network device in the cellular network is synchronized with the satellite system.
  • the synchronization signal in addition to transmitting the synchronization signal according to the method 100, the synchronization signal has other sources.
  • the network device #2 can also transmit a synchronization signal, and when the network device transmits the synchronization signal, does not send a manner for instructing the network device to select the synchronization signal.
  • terminal device #3 when terminal device #3 does not find any external synchronization source, it can be directly synchronized with the satellite system. At this time, terminal device #3 is not within the coverage of the network device, but can receive satellite signals. The terminal device is synchronized with the satellite system and transmits a synchronization signal indicating that it is synchronized with the satellite system but not synchronized with the cellular network. The terminal device does not send information about how the synchronization signal is selected by itself. Directional information.
  • terminal device #4 does not find any external synchronization source and cannot receive satellite signals. At this time, terminal device #4 is not within the coverage of the cellular network and cannot receive satellite signals. Then, the terminal device generates a synchronization signal by itself, indicating that it is neither synchronized with the cellular network nor synchronized with the satellite system. The terminal device does not transmit indication information as to how the synchronization signal itself is selected.
  • the synchronization source #1 may be a terminal device, for example, an in-vehicle device.
  • the above terminal device #3 and terminal device #4 may be in-vehicle devices.
  • each of the synchronization sources (including the synchronization source #1, the network device #2, the terminal device #3, and the terminal device #4 of the implementation 100) transmits a synchronization signal, which will be described below when the synchronization device receives the synchronization source. After the synchronization signal, how to select the synchronization source and synchronize.
  • the synchronization device may be an in-vehicle device.
  • the synchronization method 200 may be used when the synchronization device is located within the coverage of the cellular network, or after receiving the indication information of the network device within the network coverage, and then moving to the non-network coverage.
  • the synchronization method 300 can be used to synchronize the device not within the coverage of the cellular network.
  • FIG. 2 is a schematic flow chart of a synchronization method 200 in accordance with an embodiment of the present application.
  • the synchronization device receives the indication information sent by the network device, where the indication information is used to indicate the manner in which the synchronization device selects the synchronization source, and the manner is the first mode or the second mode or the third mode.
  • the first mode is to select a synchronization signal according to a first priority order
  • the second mode is to select a synchronization signal according to a second priority order
  • the third mode is a first priority order and a second priority order selection.
  • a synchronization signal wherein the first prioritization is an ordering of the synchronization signals according to a correlation between the synchronization signal and the cellular network, the second priority ordering is sorting the synchronization signals according to the correlation between the synchronization signals and the satellite system ;
  • the synchronization device selects the target synchronization source.
  • the synchronization device selects the target synchronization source according to the second manner.
  • the synchronization device selects the target synchronization source according to the first manner.
  • the synchronization device when the synchronization device is within the coverage of the cellular network, it may be configured to select the target synchronization source for synchronization in the first mode or the second mode. If the sync device is configured to utilize the When the target synchronization source is selected in a manner, if the synchronization signal related to the cellular network is not received within the first predetermined time, the target synchronization source may be selected according to the second manner, and once the synchronization signal related to the cellular network is found, the The first way is to select the target synchronization source.
  • the synchronization device is configured to select the target synchronization source by using the second mode, if the synchronization signal related to the satellite system is not received within the second predetermined time, the target synchronization source may be selected in the first manner, and once found The synchronization signal associated with the satellite system is re-selected in the second way to select the target synchronization source.
  • the first predetermined time may be equal to or not equal to the second predetermined time.
  • the first prioritization comprises: a synchronization signal directly from the network device > a synchronization signal from a terminal device directly synchronized with the network device > a synchronization signal from a terminal device indirectly synchronized with the network device.
  • the more the synchronization signal obtained directly from the cellular network the higher the priority. This is because each time the synchronization signal is forwarded, a certain error is accumulated, and the more the number of times of forwarding, the larger the accumulated synchronization error, and the worse the synchronization accuracy.
  • the second prioritization comprises: a satellite system > a synchronization signal from a terminal device that is directly synchronized with the satellite system > a synchronization signal from a terminal device that is indirectly synchronized with the satellite system.
  • the priority of the synchronization signal in the first priority order is higher than the priority of the synchronization signal in the second priority order, for example, synchronization directly from a network device.
  • the synchronization signal in the second priority order has a higher priority than the synchronization signal in the first priority order, for example, directly from the satellite system.
  • FIG. 3 is a schematic flowchart of a synchronization manner 300 according to an embodiment of the present application.
  • the synchronization device determines at least one synchronization source that transmits the synchronization signal.
  • the at least one synchronization source includes at least one first synchronization source
  • the manner of selecting the synchronization signal by the first synchronization source includes a first mode or a second mode, where the first mode is to select a synchronization signal according to a first priority order, and the second mode is to select a synchronization signal according to a second priority order, wherein
  • the first prioritization is an ordering of the synchronization signals according to the correlation of the synchronization signals with the cellular network
  • the second prioritization is the ordering of the synchronization signals according to the correlation of the synchronization signals with the satellite system.
  • synchronization is performed with the target synchronization source.
  • the first prioritization comprises: a synchronization signal directly from the network device > a synchronization signal from a terminal device directly synchronized with the network device > a synchronization signal from a terminal device indirectly synchronized with the network device.
  • the second prioritization comprises: a synchronization signal generated by the satellite system > a synchronization signal from a terminal device directly synchronized with the satellite system > a synchronization signal from a terminal device indirectly synchronized with the satellite system.
  • the synchronization device of method 300 can be in two communication scenarios.
  • the synchronization device In the first communication scenario, the synchronization device is not within the coverage of the cellular network, but is capable of receiving satellite signals transmitted by the satellite system.
  • the synchronization device In the second communication scenario, the synchronization device is not within the coverage of the cellular network, nor is it capable of receiving satellite signals transmitted by the satellite system. The following will combine these two scenarios to explain how to implement the synchronization mode 300 in detail.
  • the synchronization device determines whether the manner in which the at least one first synchronization source selects the synchronization signal is the same; and selects whether the synchronization signal is the same according to the at least one first synchronization source, and selects the target synchronization source from the at least one first synchronization source.
  • the synchronization device selects the target synchronization source according to the third priority order; wherein the third priority ranking includes: simultaneously with the cellular network and the satellite system Synchronized Synchronization Source > Synchronization Source Synchronized with Satellite System > Network Design A synchronization source that is synchronized.
  • the synchronization source synchronized with the cellular network and the satellite system has the highest priority, so that the interference and the retention of the cellular network can be reduced. Synchronization outside the coverage of the cellular network; when it is not possible to simultaneously consider the priority to ensure synchronization with the satellite system to maintain synchronization outside the coverage of the cellular network, the synchronization source synchronized with the satellite system has a higher priority than the synchronization source with the cellular network. level.
  • the synchronization device selects the target synchronization source according to the fourth priority order; wherein the fourth priority ranking comprises: selecting according to the first manner Synchronization source that synchronizes signals and simultaneously synchronizes with network devices and satellite systems > Synchronization source that selects the synchronization signal in the second mode and simultaneously synchronizes with the network device and the satellite system > Synchronization source that selects the synchronization signal in synchronization with the satellite system and synchronizes with the satellite system > A synchronization source that selects the synchronization signal and synchronizes with the network device in the first way.
  • the signal strength of the first synchronization source is greater than or equal to the first threshold. That is to say, the first synchronization source not only needs to select the synchronization signal according to the first mode or the second mode, and the strength of the synchronization signal transmitted needs to be greater than the first threshold.
  • the first threshold can be based on actual conditions.
  • the synchronization device in the synchronization source that the synchronization device is capable of receiving the synchronization signal provided by the synchronization device, if none of the indications are selected in the first mode or the second mode, or the strength of the provided synchronization signal is lower than the first threshold
  • the synchronization device can be synchronized with the satellite system.
  • the synchronization device determines whether the manner in which the at least one first synchronization source selects the synchronization signal is the same; and selects whether the synchronization signal is the same according to the at least one first synchronization source, and selects the target synchronization source from the at least one first synchronization source.
  • the synchronization device selects the target synchronization source according to the fifth priority order; wherein the fifth priority ranking includes: simultaneously with the network device and the satellite system Synchronized Synchronization Source > Synchronization Source Synchronized with Network Device > Synchronization source synchronized with the satellite system.
  • the synchronization device sorts according to the sixth priority, and selects the target synchronization source; wherein the sixth priority ranking includes: selecting according to the first manner Synchronization signal synchronized with the network device and the satellite system at the same time > Synchronization source that selects the synchronization signal in the first mode and synchronizes with the network device> Selects according to the second mode A synchronization source that selects a synchronization signal and simultaneously synchronizes with the network device and the satellite system > a synchronization source that selects the synchronization signal in synchronization with the satellite system in a second manner.
  • the signal strength of the first synchronization source is greater than or equal to a second threshold. That is to say, the first synchronization source not only needs to select the synchronization signal according to the first mode or the second mode, and the strength of the synchronization signal transmitted needs to be greater than the second threshold.
  • This second threshold can be based on actual conditions.
  • the synchronization device may determine whether there is at least one second synchronization source in the synchronization source capable of receiving the synchronization signal that is provided, and the signal strength of the second synchronization source is less than the second threshold and greater than or equal to the third threshold, and according to the Seven priority ordering, selecting a target synchronization source from the at least one second synchronization source, wherein the seventh priority ranking comprises:
  • the synchronization device may itself transmit the synchronization signal and set itself to be out of sync with the GNSS and not with the cellular network when the synchronization signal provided by the synchronization source capable of receiving the synchronization signal it is providing is less than the third threshold.
  • FIG. 4 is a schematic block diagram of a synchronization device 400 in accordance with an embodiment of the present application.
  • the synchronization apparatus 400 includes: a determining unit 410, configured to determine at least one synchronization source that transmits a synchronization signal; and a selection unit 420, configured to, when the at least one synchronization source includes at least one first synchronization source, based on Each of the first synchronization sources selects a synchronization signal, and selects a target synchronization source from the at least one first synchronization source; wherein the manner in which the first synchronization source selects the synchronization signal includes a first mode or a second mode, where The first mode is to select a synchronization signal according to a first priority order, and the second mode is to select a synchronization signal according to a second priority order, wherein the first priority order is a synchronization signal according to a correlation between the synchronization signal and the cellular network. Sorting performed, the second priority ordering is sorting the
  • the first prioritization comprises: a synchronization signal directly from the network device > a synchronization signal from a terminal device directly synchronized with the network device > a synchronization signal from a terminal device indirectly synchronized with the network device.
  • the second prioritization comprises: a synchronization signal directly from the satellite system > a synchronization signal from a terminal device directly synchronized with the satellite system > from indirect synchronization with the satellite system The synchronization signal of the terminal device.
  • the first synchronization sequence includes the synchronization signal from the terminal device directly synchronized with the satellite system; wherein the first synchronization sequence is further used to indicate that the terminal device that transmits the first synchronization sequence is directly synchronized with the satellite system, Or the terminal device transmitting the first synchronization sequence instructs itself to synchronize directly with the satellite system by a broadcast signal; and/or the second synchronization sequence includes the synchronization signal from the terminal device indirectly synchronized with the satellite system; The second synchronization sequence is further configured to indicate that the terminal device transmitting the second synchronization sequence is indirectly synchronized with the satellite system, or the terminal device transmitting the second synchronization sequence instructs itself to indirectly synchronize with the satellite system by using a broadcast signal.
  • the synchronization device 400 is not in the coverage of the cellular network, and can receive the satellite signal; the selecting unit 420 is specifically configured to: determine whether the manner in which the at least one first synchronization source selects the synchronization signal is the same; The at least one first synchronization source selects whether the synchronization signals are the same, and the target synchronization source is selected from the at least one first synchronization source.
  • the synchronization device 400 is not within the coverage of the cellular network, and can receive the satellite signal; the selecting unit 420 is specifically configured to: when each of the first synchronization sources selects the synchronization signal in the same manner, according to the The three priority rankings select the target synchronization source; wherein the third priority ranking includes: a synchronization source synchronized with the cellular network and the satellite system > a synchronization source synchronized with the satellite system > a synchronization source synchronized with the network device.
  • the synchronization device 400 is not in the coverage of the cellular network, and can receive the satellite signal; the selecting unit 420 is specifically configured to: when the manner in which the synchronization signal is selected by the at least one first synchronization source is different, according to a fourth priority ordering, selecting the target synchronization source; wherein the fourth priority ranking comprises: selecting a synchronization signal according to the first manner and simultaneously synchronizing with the network device and the satellite system > selecting the synchronization according to the second manner Synchronization source that signals and simultaneously synchronizes with the network device and the satellite system > Synchronization source that selects the synchronization signal in accordance with the second mode and synchronizes with the satellite system > Synchronization source that selects the synchronization signal and synchronizes with the network device in accordance with the first mode.
  • the signal strength of the first synchronization source is greater than or equal to the first threshold.
  • the synchronization unit 430 is further configured to: synchronize with the satellite system when the at least one synchronization source does not include the first synchronization source.
  • the synchronization device is not in the coverage of the cellular network, and cannot receive the satellite signal; the selecting unit 420 is specifically configured to: determine whether the manner in which the at least one first synchronization source selects the synchronization signal is the same; A first synchronization source selects whether the synchronization signals are the same, and the target synchronization source is selected from the at least one first synchronization source.
  • the synchronization device is not in the coverage of the cellular network, and cannot receive the satellite signal; the selecting unit 420 is specifically configured to: when the manner of selecting the synchronization signal is the same in the at least one first synchronization source, according to the fifth The priority synchronization source selects the target synchronization source; wherein the fifth priority ranking includes: a synchronization source synchronized with the network device and the satellite system> a synchronization source synchronized with the network device> a synchronization source synchronized with the satellite system.
  • the synchronization device is not in the coverage of the cellular network, and the satellite signal cannot be received.
  • the selecting unit 420 is specifically configured to: when the manner in which the synchronization signal is selected by the at least one first synchronization source is different, according to the Six priority ordering, selecting the target synchronization source; wherein the sixth priority ordering comprises: selecting a synchronization signal according to the first mode and simultaneously synchronizing with a network device and a satellite system > selecting a synchronization signal according to the first mode And a synchronization source synchronized with the network device> a synchronization source that selects the synchronization signal according to the second mode and simultaneously synchronizes with the network device and the satellite system> a synchronization source that selects the synchronization signal and synchronizes with the satellite system according to the second mode.
  • the signal strength of the first synchronization source is greater than or equal to a second threshold.
  • the selecting unit 420 is further configured to: when the at least one synchronization source does not include the first synchronization source and includes at least one second synchronization source, select the target synchronization source according to a seventh priority order, the second The signal strength of the synchronization source is less than a second threshold and greater than or equal to a third threshold; wherein the seventh priority ranking comprises: a synchronization source synchronized with the satellite system > a synchronization source not synchronized with the satellite system and not with the network device.
  • the satellite system is a Global Navigation Satellite System (GNSS)
  • GNSS Global Navigation Satellite System
  • the synchronization device is an in-vehicle device.
  • the at least one synchronization source comprises at least one of a network device, a terminal device, and a satellite system.
  • the synchronization device 400 may correspond to the synchronization device in the method 300, and the corresponding functions of the synchronization device may be implemented.
  • the synchronization device 400 may correspond to the synchronization device in the method 300, and the corresponding functions of the synchronization device may be implemented.
  • no further details are provided herein.
  • FIG. 5 is a schematic block diagram of a synchronization device 500 in accordance with an embodiment of the present application.
  • the synchronization device 500 includes: a receiving unit 510, configured to receive indication information sent by the network device, where the indication information is used to indicate a manner in which the synchronization device selects a synchronization source, where the manner is the first mode or the second a mode or a third mode; the first mode is to select a synchronization signal according to a first priority order, and the second mode is to select a synchronization signal according to a second priority order, the third mode is a first priority order and a second Priority sorting selects a synchronization signal, wherein the first priority ordering is ordering the synchronization signals according to the correlation between the synchronization signal and the cellular network, and the second priority ordering is to synchronize the correlation of the synchronization signals with the satellite system. Sorting of signals; selection unit 520, for Based on the indication information, the target synchronization source is selected.
  • the selecting unit 520 is configured to: when the indication information indicates the first mode, if the receiving unit does not receive the synchronization signal related to the cellular network signal, the selecting unit selects the target according to the second manner.
  • the synchronization source or, when the indication information indicates the second mode, if the receiving unit does not receive the synchronization signal related to the satellite system, the selection unit selects the target synchronization source according to the first mode.
  • the selecting unit 520 is specifically configured to: if the receiving unit does not receive the synchronization signal related to the cellular network signal at the first predetermined time, select the target synchronization source according to the second manner; or if the receiving unit is The synchronization signal associated with the satellite system is not received within the second predetermined time, and the target synchronization source is selected in the first manner.
  • the first prioritization comprises: a synchronization signal directly from the network device > a synchronization signal from a terminal device directly synchronized with the network device > a synchronization signal from a terminal device indirectly synchronized with the network device.
  • the second prioritization comprises: a synchronization signal generated by the satellite system > a synchronization signal from a terminal device directly synchronized with the satellite system > a synchronization signal from a terminal device indirectly synchronized with the satellite system.
  • the priority of the synchronization signal in the first priority order is higher than the priority of the synchronization signal in the second priority order, or in the second priority ordering
  • the priority of the synchronization signal is higher than the priority of the synchronization signal in the first priority ordering.
  • the synchronization device 500 may correspond to the synchronization device in the method 200, and the corresponding functions of the synchronization device may be implemented.
  • the synchronization device 500 may correspond to the synchronization device in the method 200, and the corresponding functions of the synchronization device may be implemented.
  • no further details are provided herein.
  • FIG. 6 is a schematic block diagram of a synchronization source 600 in accordance with an embodiment of the present application.
  • the synchronization source 600 includes: a determining unit 610, configured to determine a manner for the acquiring unit 620 to acquire a synchronization signal; and a manner in which the acquiring unit acquires the synchronization signal includes a first mode or a second mode, where the first mode In order to select the synchronization signals according to the first priority order, the second mode is to select the synchronization signals according to the second priority order, wherein the first priority ordering is to sort the synchronization signals according to the correlation between the synchronization signals and the cellular network.
  • the second priority ordering is to sort the synchronization signals according to the correlation between the synchronization signal and the satellite system; the obtaining unit 620 is configured to acquire the first synchronization signal according to the manner for determining the synchronization signal determined by the determining unit 610.
  • the synchronization unit 630 is configured to perform synchronization according to the first synchronization signal, and the transmitting unit 640 is configured to transmit a second synchronization signal and indication information, where the indication information is used to indicate a manner in which the synchronization source acquires the first synchronization signal.
  • the transmitting unit 640 is specifically configured to: transmit a second synchronization signal that is implemented by using the first synchronization sequence; and send broadcast information, where the broadcast information is used to indicate the indication information.
  • the synchronization source 600 is a device directly synchronized with the satellite system, and the first synchronization sequence is a sequence including the second synchronization signal transmitted by the transmitting unit 640; or the synchronization source 600 is indirectly synchronized with the satellite system.
  • the first synchronization sequence is a sequence including the second synchronization signal transmitted by the transmitting unit 640.
  • the transmitting unit 640 is specifically configured to: send a second synchronization sequence, where the second synchronization sequence includes the second synchronization signal and the indication information.
  • the synchronization source 600 is a device that is directly synchronized with the satellite system, and the second synchronization sequence is a sequence including the second synchronization signal transmitted by the transmitting unit 640; or
  • the synchronization source 600 is a device that is indirectly synchronized with the satellite system, and the second synchronization sequence is a sequence including the second synchronization signal transmitted by the transmitting unit 640.
  • the first prioritization comprises: a synchronization signal directly from the network device > a synchronization signal from a terminal device directly synchronized with the network device > a synchronization signal from a terminal device indirectly synchronized with the network device.
  • the second prioritization comprises: a synchronization signal generated by the satellite system > a synchronization signal from a terminal device directly synchronized with the satellite system > a synchronization signal from a terminal device indirectly synchronized with the satellite system.
  • the determining unit 610 is specifically configured to: determine, according to an indication of the network device, a manner for acquiring the synchronization signal.
  • the synchronization source 600 may correspond to the synchronization source in the method 100, and the corresponding function of the synchronization source may be implemented.
  • the synchronization source 600 may correspond to the synchronization source in the method 100, and the corresponding function of the synchronization source may be implemented.
  • details are not described herein again.
  • FIG. 7 is a schematic block diagram of a synchronization device 700 in accordance with an embodiment of the present application.
  • the synchronization device 700 includes a processor 710 and a memory 720.
  • the memory 720 is configured to store program instructions.
  • the processor 710 can call program instructions stored in the memory 720.
  • the synchronization device 700 also includes a transceiver 730 for external communication, and a bus system 740 for interconnecting the processor 710, the memory 720, and the transceiver 730.
  • the processor 710 is configured to invoke an instruction stored in the memory 720, and perform the operations of: determining at least one synchronization source that transmits the synchronization signal; and when the at least one synchronization source includes the at least one first synchronization source, based on each of the first synchronization sources Selecting a synchronization signal, selecting a target synchronization source from the at least one first synchronization source; wherein the manner in which the first synchronization source selects the synchronization signal includes the first In a second mode, the first mode is to select a synchronization signal according to a first priority order, and the second mode is to select a synchronization signal according to a second priority order, wherein the first priority ranking is according to a synchronization signal and a cellular Correlation of the network
  • the sequencing of the synchronization signals is performed by sorting the synchronization signals according to the correlation of the synchronization signals with the satellite system; synchronizing with the target synchronization source.
  • the first prioritization comprises: a synchronization signal directly from the network device > a synchronization signal from a terminal device directly synchronized with the network device > a synchronization signal from a terminal device indirectly synchronized with the network device.
  • the second prioritization comprises: a synchronization signal directly from the satellite system > a synchronization signal from a terminal device directly synchronized with the satellite system > a synchronization signal from a terminal device indirectly synchronized with the satellite system.
  • the first synchronization sequence includes the synchronization signal from the terminal device directly synchronized with the satellite system; wherein the first synchronization sequence is further used to indicate that the terminal device that transmits the first synchronization sequence is directly synchronized with the satellite system, Or the terminal device transmitting the first synchronization sequence instructs itself to synchronize directly with the satellite system by a broadcast signal; and/or the second synchronization sequence includes the synchronization signal from the terminal device indirectly synchronized with the satellite system; The second synchronization sequence is further configured to indicate that the terminal device transmitting the second synchronization sequence is indirectly synchronized with the satellite system, or the terminal device transmitting the second synchronization sequence instructs itself to indirectly synchronize with the satellite system by using a broadcast signal.
  • the synchronization device 700 is not within the coverage of the cellular network and can receive satellite signals; the processor 710 is configured to invoke an instruction stored in the memory 720, and perform the following operations: determining the at least one first synchronization source selection Whether the manner of the synchronization signal is the same; whether the synchronization signal is selected according to the at least one first synchronization source is the same, and the target synchronization source is selected from the at least one first synchronization source.
  • the synchronization device 700 is not within the coverage of the cellular network and is capable of receiving satellite signals; the processor 710 is configured to invoke instructions stored in the memory 720 to perform the following operations: selecting each of the first synchronization sources When the synchronization signals are in the same manner, the synchronization device selects the target synchronization source according to the third priority order; wherein the third priority order includes: synchronization source synchronized with the cellular network and the satellite system> synchronization with the satellite system Source > Synchronization source synchronized with the network device.
  • the synchronization device 700 is not within the coverage of the cellular network and is capable of receiving satellite signals; the processor 710 is configured to invoke instructions stored in the memory 720 to perform the following operations: When the manner in which the at least one first synchronization source selects the synchronization signal is different, the synchronization device selects the target synchronization source according to the fourth priority order; wherein the fourth priority ordering comprises: selecting the synchronization signal according to the first manner And a synchronization source synchronized with the network device and the satellite system at the same time > a synchronization source that selects the synchronization signal according to the second mode and simultaneously synchronizes with the network device and the satellite system > a synchronization source that selects the synchronization signal according to the second mode and synchronizes with the satellite system > A synchronization source that selects the synchronization signal and synchronizes with the network device in accordance with the first mode.
  • the signal strength of the first synchronization source is greater than or equal to the first threshold.
  • the processor 710 is configured to invoke an instruction stored in the memory 720 to perform synchronization with the satellite system when the at least one synchronization source does not include the first synchronization source.
  • the synchronization device is not within the coverage of the cellular network and cannot receive the satellite signal; the processor 710 is configured to invoke an instruction stored in the memory 720, and perform the following operations: determining that the at least one first synchronization source selects synchronization Whether the manner of the signals is the same; selecting whether the synchronization signals are the same according to the at least one first synchronization source, and selecting the target synchronization source from the at least one first synchronization source.
  • the synchronization device is not within the coverage of the cellular network and cannot receive the satellite signal; the processor 710 is configured to invoke an instruction stored in the memory 720 to perform an operation of: selecting synchronization at the at least one first synchronization source When the manners of the signals are the same, the synchronization device selects the target synchronization source according to the fifth priority order; wherein the fifth priority order includes: a synchronization source synchronized with the network device and the satellite system> a synchronization source synchronized with the network device > Synchronization source synchronized with the satellite system.
  • the synchronization device is not within the coverage of the cellular network and cannot receive the satellite signal; the processor 710 is configured to invoke an instruction stored in the memory 720 to perform an operation of: selecting synchronization at the at least one first synchronization source
  • the synchronization device selects the target synchronization source according to the sixth priority order; wherein the sixth priority ordering comprises: selecting the synchronization signal according to the first manner and simultaneously synchronizing with the network device and the satellite system Synchronization source> Synchronization source that selects the synchronization signal according to the first mode and synchronizes with the network device> Synchronization source that selects the synchronization signal according to the second mode and simultaneously synchronizes with the network device and the satellite system> Selects the synchronization signal according to the second mode And a synchronization source that is synchronized with the satellite system.
  • the signal strength of the first synchronization source is greater than or equal to a second threshold.
  • the processor 710 is configured to invoke an instruction stored in the memory 720, and perform the following operations: when the at least one synchronization source does not include the first synchronization source and includes at least one second synchronization source, according to the seventh Priority sorting selects the target synchronization source, the signal strength of the second synchronization source is less than a second threshold and greater than or equal to a third threshold; wherein the seventh priority ranking comprises: synchronization source synchronized with the satellite system > not with the satellite system And a synchronization source that is not synchronized with the network device.
  • the satellite system is a Global Navigation Satellite System (GNSS)
  • GNSS Global Navigation Satellite System
  • the synchronization device 600 is an in-vehicle device.
  • the at least one synchronization source comprises at least one of a network device, a terminal device, and a satellite system.
  • the synchronization device 700 may correspond to the synchronization device in the method 300, and the corresponding functions of the synchronization device may be implemented.
  • the synchronization device 700 may correspond to the synchronization device in the method 300, and the corresponding functions of the synchronization device may be implemented.
  • no further details are provided herein.
  • FIG. 8 is a schematic block diagram of a synchronization device 800 in accordance with an embodiment of the present application.
  • the synchronization device 800 includes a processor 810 and a memory 820.
  • the memory 820 is configured to store program instructions.
  • the processor 810 can call program instructions stored in the memory 820.
  • the synchronization device 800 also includes a transceiver 830 for external communication, and a bus system 840 for interconnecting the processor 810, the memory 820, and the transceiver 830.
  • the processor 810 is configured to invoke the instruction stored in the memory 820, and perform the following operations: receiving, by the transceiver 830, indication information sent by the network device, where the indication information is used to indicate a manner in which the synchronization device selects a synchronization source, where the manner is the first mode.
  • the first mode is to select the synchronization signals according to the first priority order
  • the second mode is to select the synchronization signals according to the second priority order
  • the third mode is to sort according to the first priority
  • selecting a synchronization signal according to the second priority order wherein the first priority ordering is sorting the synchronization signals according to the correlation between the synchronization signal and the cellular network, and the second priority ordering is related to the satellite system according to the synchronization signal Sorting the synchronization signals; selecting the target synchronization source based on the indication information.
  • the processor 810 is configured to invoke an instruction stored in the memory 820, and perform the following operations: when the indication information indicates the first mode, if the transceiver 830 does not receive the synchronization signal related to the cellular network signal And selecting the target synchronization source according to the second manner; or, when the indication information indicates the second mode, if the transceiver 830 does not receive the synchronization signal related to the satellite system, the target synchronization source is selected according to the first manner.
  • the processor 810 is configured to invoke an instruction stored in the memory 820 to perform an operation of selecting a target according to the second mode if the transceiver 830 does not receive a synchronization signal related to the cellular network signal at the first predetermined time.
  • the first prioritization comprises: a synchronization signal directly from the network device > a synchronization signal from a terminal device directly synchronized with the network device > a synchronization signal from a terminal device indirectly synchronized with the network device.
  • the second prioritization comprises: a synchronization signal generated by the satellite system > a synchronization signal from a terminal device directly synchronized with the satellite system > a synchronization signal from a terminal device indirectly synchronized with the satellite system.
  • the priority of the synchronization signal in the first priority order is higher than the priority of the synchronization signal in the second priority order, or in the second priority ordering
  • the priority of the synchronization signal is higher than the priority of the synchronization signal in the first priority ordering.
  • the synchronization device 800 may correspond to the synchronization device in the method 200, and the corresponding functions of the synchronization device may be implemented.
  • the synchronization device 800 may correspond to the synchronization device in the method 200, and the corresponding functions of the synchronization device may be implemented.
  • no further details are provided herein.
  • FIG. 9 is a schematic block diagram of a synchronization source 900 in accordance with an embodiment of the present application.
  • the synchronization source 900 includes a processor 910 and a memory 920.
  • the memory 920 is configured to store program instructions.
  • the processor 910 can call program instructions stored in the memory 920.
  • the synchronization source 900 also includes a transceiver 930 for external communication, and a bus system 940 for interconnecting the processor 910, the memory 920, and the transceiver 930.
  • the processor 910 is configured to invoke the instruction stored in the memory 920, and perform the following operations: determining a manner for acquiring the synchronization signal; and acquiring the synchronization signal includes the first mode or the second mode, where the first mode is according to the first priority Sorting the selection of the synchronization signal, the second mode is selecting the synchronization signal according to the second priority order, wherein the first priority ordering is sorting the synchronization signal according to the correlation between the synchronization signal and the cellular network, the second priority Sorting is to sort the synchronization signals according to the correlation between the synchronization signal and the satellite system; acquiring the first synchronization signal according to the determined manner for acquiring the synchronization signal; performing synchronization according to the first synchronization signal; transmitting the first by using the transceiver 930 And a second synchronization signal and indication information, wherein the indication information is used to indicate a manner in which the synchronization source acquires the first synchronization signal.
  • the processor 910 is configured to invoke an instruction stored in the memory 920 to perform: transmitting, by the transceiver 930, a second synchronization signal implemented by the first synchronization sequence; transmitting, by the transceiver 930, broadcast information, the broadcast information is used by the broadcast information Indicates the indication information.
  • the synchronization source is a device directly synchronized with the satellite system, and the first synchronization sequence is a sequence including the second synchronization signal transmitted by the transmitter 930; or
  • the synchronization source is a device indirectly synchronized with the satellite system, and the first synchronization sequence includes the transmission A sequence of the second synchronization signal transmitted by the device 930.
  • the processor 910 is configured to invoke an instruction stored in the memory 920, and perform the following operations: transmitting, by the transceiver 930, a second synchronization sequence, the second synchronization sequence including the second synchronization signal and the indication information.
  • the synchronization source is a device directly synchronized with the satellite system
  • the second synchronization sequence is a sequence including the second synchronization signal transmitted by the transmitter 930; or the synchronization source is a device indirectly synchronized with the satellite system
  • the second synchronization sequence is a sequence comprising the second synchronization signal transmitted by the transmitter 930.
  • the first prioritization comprises: a synchronization signal directly from the network device > a synchronization signal from a terminal device directly synchronized with the network device > a synchronization signal from a terminal device indirectly synchronized with the network device.
  • the second prioritization comprises: a synchronization signal generated by the satellite system > a synchronization signal from a terminal device directly synchronized with the satellite system > a synchronization signal from a terminal device indirectly synchronized with the satellite system.
  • the processor 910 is configured to invoke an instruction stored in the memory 920 to perform an operation of determining a manner for acquiring a synchronization signal according to an indication of the network device.
  • the synchronization source 900 may correspond to the synchronization source in the method 100, and the corresponding function of the synchronization source may be implemented.
  • the synchronization source 900 may correspond to the synchronization source in the method 100, and the corresponding function of the synchronization source may be implemented.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • Another point that is shown or discussed between each other The coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Landscapes

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

Abstract

本发明实施例提供了一种同步方法、同步装置和同步源。该方法包括:同步装置确定发射同步信号的至少一个同步源;在至少一个同步源包括至少一个第一同步源时,基于每个第一同步源选择同步信号的方式,同步装置选择目标同步源;其中,第一同步源选择同步信号的方式包括第一方式或第二方式,第一方式为按照第一优先级排序选择同步信号,第二方式为按照第二优先级排序选择同步信号,其中,第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;同步装置与目标同步源进行同步。本申请实施例可以兼容卫星系统和蜂窝网络,实现同步装置的同步。

Description

同步方法、同步装置和同步源 技术领域
本发明涉及通信领域,并且更具体地,涉及一种同步方法、同步装置和同步源。
背景技术
在3GPP Release-12 &13中,设备利用蜂窝网络的同步来实现设备间通信(Device to Device,D2D)的同步。对于没有蜂窝网络覆盖的场景,可以采用由处在蜂窝网络边缘的设备向周围传输同步信号(synchronization signal)的办法来帮助没有网络覆盖的设备形成同步。
随着卫星系统引入到D2D通信中,如何进行同步,是一项亟待解决的问题。
发明内容
本申请实施例提供了一种同步方法、同步装置和同步源,可以兼容卫星系统和蜂窝网络,实现同步装置的同步。
第一方面,提供了一种同步方法,包括:同步装置确定发射同步信号的至少一个同步源;在所述至少一个同步源包括至少一个第一同步源时,基于每个所述第一同步源选择同步信号的方式,从所述至少一个第一同步源中,所述同步装置选择目标同步源;其中,所述第一同步源选择同步信号的方式包括第一方式或第二方式,所述第一方式为按照第一优先级排序选择同步信号,所述第二方式为按照第二优先级排序选择同步信号,其中,所述第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,所述第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;所述同步装置与所述目标同步源进行同步。
结合第一方面,在第一方面的第一种可能的实现方式中,第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第二种可能的实现方式中,第二优先级排序包括:直接来自于卫星系统的同步信号> 来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第三种可能的实现方式中,第一同步序列包括所述来自于直接与卫星系统同步的终端设备的同步信号;其中,所述第一同步序列还用于指示发射所述第一同步序列的终端设备直接与卫星系统同步,或者,发射所述第一同步序列的终端设备通过广播信号指示自身直接与卫星系统同步;和/或,第二同步序列包括所述来自于间接与卫星系统同步的终端设备的同步信号;其中,所述第二同步序列还用于指示发射所述第二同步序列的终端设备间接与卫星系统同步,或者,发射所述第二同步序列的终端设备通过广播信号指示自身间接与卫星系统同步。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第四种可能的实现方式中,所述同步装置不在蜂窝网络的覆盖范围之内,且能接收到卫星信号时,从所述至少一个第一同步源中,所述同步装置选择目标同步源,包括:确定所述至少一个第一同步源选择同步信号的方式是否相同;根据所述至少一个第一同步源选择同步信号是否相同,从所述至少一个第一同步源中,选择所述目标同步源。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第五种可能的实现方式中,所述同步装置不在蜂窝网络的覆盖范围之内,且能接收到卫星信号时,在每个所述第一同步源选择同步信号的方式相同时,所述同步装置按照第三优先级排序选择所述目标同步源;其中,所述第三优先级排序包括:同时与蜂窝网络和卫星系统同步的同步源>与卫星系统同步的同步源>与网络设备同步的同步源。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第六种可能的实现方式中,所述同步装置不在蜂窝网络的覆盖范围之内,且能接收到卫星信号时,在所述至少一个第一同步源选择同步信号的方式不相同时,所述同步装置按照第四优先级排序,选择所述目标同步源;其中,所述第四优先级排序包括:按照所述第一方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照所述第二方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照所述第二方式选择同步信号且与卫星系统同步的同步源>按照所述第一方式选择同步信号且与网络设备同步的同步源。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第七种可能的实现方式中,所述第一同步源的信号强度大于或等于第一阈值。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第八种可能的实现方式中,在所述至少一个同步源不包括所述第一同步源时,所述同步装置与卫星系统同步。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第九种可能的实现方式中,所述同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号时,从所述至少一个第一同步源中,所述同步装置选择目标同步源,包括:确定所述至少一个第一同步源选择同步信号的方式是否相同;根据所述至少一个第一同步源选择同步信号是否相同,从所述至少一个第一同步源中,选择所述目标同步源。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第十种可能的实现方式中,所述同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号时,在所述至少一个第一同步源选择同步信号的方式相同时,所述同步装置按照第五优先级排序选择所述目标同步源;其中,所述第五优先级排序包括:同时与网络设备和卫星系统同步的同步源>与网络设备同步的同步源>与卫星系统同步的同步源。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第十一种可能的实现方式中,所述同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号时,在所述至少一个第一同步源选择同步信号的方式不相同时,所述同步装置按照第六优先级排序,选择所述目标同步源;其中,所述第六优先级排序包括:按照所述第一方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照所述第一方式选择同步信号且与网络设备同步的同步源>按照所述第二方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照所述第二方式选择同步信号且与卫星系统同步的同步源。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第十二种可能的实现方式中,所述第一同步源的信号强度大于或等于第二阈值。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第十三种可能的实现方式中,所述同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号时,在所述至少一个同步源不包括所述第一同步源且包括至少一个第二同步源时,所述同步装置按照第七优先级排序选择所述目标同步 源,所述第二同步源的信号强度小于第二阈值且大于等于第三阈值;其中,所述第七优先级排序包括:与卫星系统同步的同步源>不与卫星系统以及不与网络设备同步的同步源。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第十四种可能的实现方式中,所述卫星系统为全球导航卫星系统GNSS,所述同步装置为车载设备。
结合第一方面或其上述任一种可能的实现方式,在第一方面的第十五种可能的实现方式中,所述至少一个同步源包括网络设备、终端设备和卫星系统中的至少一种。
第二方面,提供了一种同步方法,包括:同步装置接收网络设备发送的指示信息,所述指示信息用于指示所述同步装置选择同步源的方式,所述方式为第一方式或第二方式或第三方式;所述第一方式为按照第一优先级排序选择同步信号,所述第二方式为按照第二优先级排序选择同步信号,所述第三方式为按照第一优先级排序和第二优先级排序选择同步信号,其中,所述第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,所述第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;所述同步装置基于所述指示信息,选择目标同步源。
结合第二方面,在第二方面的第一种可能的实现方式中,所述同步装置基于所述指示信息,选择目标同步源,包括:在所述指示信息指示的为所述第一方式时,如果所述同步装置接收不到与蜂窝网络信号相关的同步信号,所述同步装置按照第二方式选择目标同步源;或在所述指示信息指示的为所述第二方式时,如果所述同步装置接收不到与卫星系统相关的同步信号,所述同步装置按照第一方式选择目标同步源。
结合第二方面或其上述任一种可能的实现方式,在第二方面的第二种可能的实现方式中,如果所述同步装置在第一预定时间接收不到与蜂窝网络信号相关的同步信号,所述同步装置按照所述第二方式选择目标同步源;或,如果所述同步装置在第二预定时间内接收不到与卫星系统相关的同步信号,所述同步装置按照第一方式选择目标同步源。
结合第二方面或其上述任一种可能的实现方式,在第二方面的第三种可能的实现方式中,所述第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络 设备同步的终端设备的同步信号。
结合第二方面或其上述任一种可能的实现方式,在第二方面的第四种可能的实现方式中,第二优先级排序包括:卫星系统产生的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
结合第二方面或其上述任一种可能的实现方式,在第二方面的第五种可能的实现方式中,在所述第三方式中,所述第一优先级排序中的同步信号的优先级高于所述第二优先级排序中的同步信号的优先级,或所述第二优先级排序中的同步信号的优先级高于所述第一优先级排序中的同步信号的优先级。
第三方面,提供了一种同步方法,包括:同步源确定用于获取同步信号的方式;同步源获取同步信号的方式包括第一方式或第二方式,所述第一方式为按照第一优先级排序选择同步信号,所述第二方式为按照第二优先级排序选择同步信号,其中,所述第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,所述第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;根据确定的用于获取同步信号的方式,所述同步源获取第一同步信号;所述同步源按照所述第一同步信号进行同步;所述同步源发射第二同步信号和指示信息,其中,所述指示信息用于指示所述同步源获取第一同步信号的方式。
结合第三方面,在第三方面的第一种可能的实现方式中,所述同步源发射同步信号和指示信息,包括:发射通过第一同步序列实现的第二同步信号;发射广播信息,所述广播信息用于指示所述指示信息。
结合第三方面或其上述任一种可能的实现方式,在第三方面的第二种可能的实现方式中,所述同步源为直接与卫星系统同步的设备,所述第一同步序列为包括所述同步源发射的所述第二同步信号的序列;或,所述同步源为间接与卫星系统同步的设备,所述第一同步序列为包括所述同步源发射的所述第二同步信号的序列。
结合第三方面或其上述任一种可能的实现方式,在第三方面的第三种可能的实现方式中,所述同步源发射同步信号和指示信息,包括:发射第二同步序列,所述第二同步序列包括所述第二同步信号以及所述指示信息。
结合第三方面或其上述任一种可能的实现方式,在第三方面的第四种可 能的实现方式中,所述同步源为直接与卫星系统同步的设备,所述第二同步序列为包括所述同步源发射的所述第二同步信号的序列;或,所述同步源为间接与卫星系统同步的设备,所述第二同步序列为包括所述同步源发射的所述第二同步信号的序列。
结合第三方面或其上述任一种可能的实现方式,在第三方面的第五种可能的实现方式中,所述第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
结合第三方面或其上述任一种可能的实现方式,在第三方面的第六种可能的实现方式中,所述第二优先级排序包括:卫星系统产生的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
结合第三方面或其上述任一种可能的实现方式,在第三方面的第七种可能的实现方式中,同步源确定用于获取同步信号的方式,包括:按照网络设备的指示,所述同步源确定用于获取同步信号的方式。
第三方面,提供了一种终端,用于执行上述第一方面或第一方面的任意可选的实现方式中的方法。具体地,该通信设备包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的模块单元。
第四方面,提供了一种同步装置,用于执行上述第一方面或第一方面的任意可选的实现方式中的方法。具体地,该同步装置包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的模块单元。
第五方面,提供了一种同步装置,用于执行上述第二方面或第二方面的任意可选的实现方式中的方法。具体地,该同步装置包括用于执行上述第二方面或第二方面的任意可能的实现方式中的方法的模块单元。
第六方面,提供了一种同步源,用于执行上述第三方面或第三方面的任意可选的实现方式中的方法。具体地,该同步源包括用于执行上述第三方面或第三方面的任意可能的实现方式中的方法的模块单元。
第七方面,提供了一种同步装置,包括:存储器和处理器,该存储器用于存储指令,该处理器用于执行该存储器存储的指令,并且当该处理器执行该存储器存储的指令时,该执行使得该处理器执行第一方面或第一方面的任意可选的实现方式中的方法。
第八方面,提供了一种同步装置,包括:存储器和处理器,该存储器用于存储指令,该处理器用于执行该存储器存储的指令,并且当该处理器执行该存储器存储的指令时,该执行使得该处理器执行第二方面或第二方面的任意可选的实现方式中的方法。
第九方面,提供了一种同步源,包括:存储器和处理器,该存储器用于存储指令,该处理器用于执行该存储器存储的指令,并且当该处理器执行该存储器存储的指令时,该执行使得该处理器执行第三方面或第三方面的任意可选的实现方式中的方法。
第十方面,提供了一种计算机存储介质,该计算机存储介质中存储有程序代码,该程序代码用于指示执行上述第一方面或第一方面的任意可选的实现方式中的方法。
第十一方面,提供了一种计算机存储介质,该计算机存储介质中存储有程序代码,该程序代码用于指示执行上述第二方面或第二方面的任意可选的实现方式中的方法。
第十二方面,提供了一种计算机存储介质,该计算机存储介质中存储有程序代码,该程序代码用于指示执行上述第三方面或第三方面的任意可选的实现方式中的方法。
附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是根据本申请实施例的同步方法的示意性流程图。
图2是根据本申请实施例的同步方法的示意性流程图。
图3是根据本申请实施例的同步方法的示意性流程图。
图4是根据本申请实施例的同步装置的示意性框图。
图5是根据本申请实施例的同步装置的示意性框图。
图6是根据本申请实施例的同步源的示意性框图。
图7是根据本申请实施例的同步装置的示意性框图。
图8是根据本申请实施例的同步装置的示意性框图。
图9是根据本申请实施例的同步源的示意性框图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
应理解,本发明的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、5G等。
在一些实施例中,D2D通信可以指车对车(Vehicle to Vehicle,V2V)通信,或V2X通信。在V2X通信中,X可以泛指任何具有无线接收和发送能力的设备,例如但不限于慢速移动的无线装置,快速移动的车载设备,或是具有无线发射接收能力的网络控制节点。当然,本申请实施例可以不用于D2D通信,而用于终端与蜂窝网络的通信。
本发明实施例中,网络设备可以是GSM或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA中的基站(NodeB),还可以是LTE中的演进型基站(evolved Node B,eNB或e-NodeB),还可以是5G中的用于提供接入服务的设备,本发明实施例并不限定。
在本发明实施例中,卫星系统可以是全球导航卫星系统(Global Navigation Satellite System,GNSS)。
图1是根据本申请实施例的同步方法100的示意性流程图。该方法可以由同步源#1实现。
在110中,同步源确定用于获取同步信号的方式。
其中,同步源选择同步信号的方式包括第一方式或第二方式,该第一方式为按照第一优先级排序选择同步信号,该第二方式为按照第二优先级排序选择同步信号,其中,该第一优先级排序是按照同步信号与蜂窝网络信号的 相关性对同步信号进行的排序,该第二优先级排序是按照同步信号与卫星信号的相关性对同步信号进行的排序。
可选地,该第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的设备的同步信号>来自于间接与网络设备同步的设备的同步信号。其中,间接与网络设备同步的设备是指该可以间接获得网络设备的同步信号,例如由网络边缘的设备提供的同步信号,该网络边缘的设备提供的同步信号是基于直接接收自网络设备的同步信号。
在该第一优先级排序中,越是直接从蜂窝网络获得的同步信号,优先级越高。这是因为,每次同步信号被转发时,就会积累一定的误差,转发的次数越多,累积的同步误差越大,同步精度也越差,因此,越是直接从蜂窝网络获得的同步信号,优先级越高。
可选地,该第二优先级排序包括:卫星信号>来自于直接与卫星系统同步的设备的同步信号>来自于间接与卫星系统同步的设备的同步信号。
其中,间接与卫星系统同步的设备是该同步源未能直接与卫星系统同步,而是获取与卫星信号直接同步的设备发送的同步信号。
在该第二优先级排序中,越是直接从卫星系统获得的同步信号,优先级越高。这是因为,每次同步信号被转发时,就会积累一定的误差,转发的次数越多,累积的同步误差越大,同步精度也越差,因此,越是直接从卫星系统获得的同步信号,优先级越高。
可选地,同步源可以按照网络设备的指示,确定用于获取同步信号的方式。
在120中,根据确定的用于获取同步信号的方式,获取第一同步信号。
在130中,按照该第一同步信号进行同步。
在140中,发射第二同步信号和指示信息,其中,该指示信息用于指示该同步源获取第一同步信号的方式。
可选地,同步源#1可以发射第一同步序列和广播消息,该第一同步序列包括该第二同步信号,该广播消息用于指示该指示信息。可选地,第一同步序列可以与第二同步序列相同。
也就是说,同步序列仅仅携带同步信号,而指示同步源#1选择同步信号的方式可以是通过广播消息发送的,例如,通过同步广播信道发射广播消息。
可选地,同步源#1可以发射第二同步序列,该第二同步序列包括该第二 同步信号以及该指示信息。
也就是说,同步序列不仅能够用于携带同步信号,也可以指示同步源选择同步信号的方式。
本申请实施例提到的同步序列可以包括以下四种序列:用于同步装置与蜂窝网络和卫星系统同步的同步序列;用于同步装置与蜂窝网络同步且不与卫星系统同步的同步序列;用于同步装置与卫星信号且不与蜂窝网络同步的同步序列;同步源自身发射的同步序列(该同步源既不与蜂窝网络同步也不与卫星系统同步)。
在本申请实施例中,同步序列本身可以指示该同步源是否与蜂窝网络和/或卫星系统同步。
本申请实施例提到的同步序列也可以包括以下两种序列:包括来自于直接与卫星系统同步的设备的同步信号的序列;包括来自于间接与卫星系统同步的设备的同步信号的序列。
可选地,在本申请实施例中,同步序列可以仅仅携带同步信号。
可选地,同步序列不仅仅携带同步信号,还可以指示发射该同步信号的该同步源是否与蜂窝网络和/或卫星系统直接或间接同步,也即同步装置能否利用该同步信号实现与蜂窝网络和/或卫星系统直接或间接同步。
可选地,在本申请实施例中,也可以直接发送广播信号,通过该广播信号指示发射同步信号的同步源是否与蜂窝网络和/或卫星系统直接或间接同步,也即同步装置能否利用该同步信号实现与蜂窝网络和/或卫星系统直接或间接同步。
可选地,在本申请实施例中,设备既与蜂窝网络同步又与卫星系统同步可以指蜂窝网络中的网络设备是与卫星系统是同步的。
可选地,在本申请实施例中,除了按照方法100发射同步信号外,同步信号还有其他来源。
例如,网络设备#2也可以发射同步信号,在网络设备发射同步信号时,不发送用于指示网络设备选择同步信号的方式。
例如,终端设备#3没有发现任何外部同步源时,但可以与卫星系统直接同步,此时,终端设备#3不在网络设备的覆盖范围内,但是能接收到卫星信号。则该终端设备与卫星系统同步,发射同步信号,指示自身与卫星系统同步但不与蜂窝网络同步。该终端设备不发送关于自身是如何选择同步信号的 方式的指示信息。
例如,终端设备#4没有发现任何外部同步源,且不能接收到卫星信号,此时,终端设备#4不在蜂窝网络的覆盖范围内且不能接收到卫星信号。则该终端设备自己产生同步信号,指示自身既未与蜂窝网络同步,也未与卫星系统同步。该终端设备不发送关于自身是如何选择同步信号的方式的指示信息。可选地,上述同步源#1可以是终端设备,例如,车载设备。上述终端设备#3和终端设备#4可以是车载设备。
以上已经描述了各个同步源(包括实现方式100的同步源#1、网络设备#2、终端设备#3和终端设备#4)是如何发射同步信号的,以下将描述同步装置在接收到同步源的同步信号之后,是如何选择同步源并进行同步的。其中,同步装置可以是车载设备。
可选地,同步方法200可以用于同步装置位于蜂窝网络的覆盖范围内,或者在网络覆盖范围内接收到网络设备的指示信息之后,再移动到非网络覆盖范围内。同步方法300可以用于同步装置不位于蜂窝网络的覆盖范围内。
图2是根据本申请实施例的同步方法200的示意性流程图。
在210中,同步装置接收网络设备发送的指示信息,该指示信息用于指示该同步装置选择同步源的方式,该方式为第一方式或第二方式或第三方式。
其中,该第一方式为按照第一优先级排序选择同步信号,该第二方式为按照第二优先级排序选择同步信号,该第三方式为按照第一优先级排序和第二优先级排序选择同步信号,其中,该第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,该第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;
在220中,按照该指示信息,同步装置选择目标同步源。
可选地,在该指示信息指示的为该第一方式时,如果该同步装置接收不到与蜂窝网络相关的同步信号,该同步装置按照第二方式选择目标同步源。
可选地,在该指示信息指示的为该第二方式时,如果该同步装置在给定的一段时间内接收不到与卫星系统相关的同步信号,该同步装置按照第一方式选择目标同步源。
也就是说,同步装置在蜂窝网络的覆盖范围之内时,可以被配置为第一方式或第二方式选择目标同步源进行同步。如果,同步装置被配置为利用第 一方式选择目标同步源时,如果在第一预定时间内接收不到与蜂窝网络相关的同步信号,则可以按照第二方式来选择目标同步源,并且一旦发现与蜂窝网络相关的同步信号,重新采用第一方式来选择目标同步源。如果,同步装置被配置为利用第二方式选择目标同步源时,如果在第二预定时间内接收不到与卫星系统相关的同步信号,则可以按照第一方式来选择目标同步源,并且一旦发现与卫星系统相关的同步信号,重新采用第二方式来选择目标同步源。
可选地,第一预定时间可以等于或不等于第二预定时间。
可选地,该第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
在该第一优先级排序中,越是直接从蜂窝网络获得的同步信号,优先级越高。这是因为,每次同步信号被转发时,就会积累一定的误差,转发的次数越多,累积的同步误差越大,同步精度也越差。
可选地,第二优先级排序包括:卫星系统>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
在该第二优先级排序中,越是直接从卫星系统获得的同步信号,优先级越高。这是因为,每次同步信号被转发时,就会积累一定的误差,转发的次数越多,累积的同步误差越大,同步精度也越差,因此,越是直接从卫星系统获得的同步信号,优先级越高。
可选地,在第三方式中,所述第一优先级排序中的同步信号的优先级高于所述第二优先级排序中的同步信号的优先级,例如,直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号>直接来自于卫星系统的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
可选地,在第三方式中,所述第二优先级排序中的同步信号的优先级高于所述第一优先级排序中的同步信号的优先级,例如,直接来自于卫星系统的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号>直接来自于网络设备的同步信号 >来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
图3是根据本申请实施例的同步方式300的示意性流程图。
在310中,同步装置确定发射同步信号的至少一个同步源。
在320中,在该至少一个同步源包括至少一个第一同步源时,基于每个该第一同步源选择同步信号的方式,从该至少一个第一同步源中,选择目标同步源;其中,该第一同步源选择同步信号的方式包括第一方式或第二方式,该第一方式为按照第一优先级排序选择同步信号,该第二方式为按照第二优先级排序选择同步信号,其中,该第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,该第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序。
在330中,与该目标同步源进行同步。
可选地,第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
可选地,第二优先级排序包括:卫星系统产生的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
可选地,方法300的同步装置可以处于两种通信场景。在第一种通信场景中,该同步装置不在蜂窝网络的覆盖范围内,但是能收到卫星系统发射的卫星信号。在第二种通信场景中,该同步装置不在蜂窝网络的覆盖范围内,也不能接收到卫星系统发射的卫星信号。以下将结合这两种场景,对如何实现同步方式300进行详细说明。
第一种通信场景
同步装置确定该至少一个第一同步源选择同步信号的方式是否相同;根据该至少一个第一同步源选择同步信号是否相同,从该至少一个第一同步源中,选择该目标同步源。
例如,在每个该第一同步源选择同步信号的方式相同时,该同步装置按照第三优先级排序选择该目标同步源;其中,该第三优先级排序包括:同时与蜂窝网络和卫星系统同步的同步源>与卫星系统同步的同步源>与网络设 备同步的同步源。
在上述第三优先级排序中,在每个第一同步源选择的同步信号相同时,以同时与蜂窝网络和卫星系统同步的同步源的优先级最高,这样可以兼顾减少对蜂窝网络干扰和保持蜂窝网络覆盖范围外的同步;当无法同时兼顾时,优先保证与卫星系统同步可以保持蜂窝网络覆盖范围外的同步,所以与卫星系统同步的同步源的优先级大于与蜂窝网络的同步源的优先级。例如,在该至少一个第一同步源选择同步信号的方式不相同时,该同步装置按照第四优先级排序,选择该目标同步源;其中,该第四优先级排序包括:按照第一方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照第二方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照第二方式选择同步信号且与卫星系统同步的同步源>按照第一方式选择同步信号且与网络设备同步的同步源。
可选地,该第一同步源的信号强度大于或等于第一阈值。也就是说,第一同步源不仅需要按照第一方式或第二方式选择同步信号,其发射的同步信号的强度还需要大于第一阈值。该第一阈值可以基于实际情况而定。
可选地,在同步装置能够接收到其提供的同步信号的同步源中,如果均没有指示按照第一方式或第二方式选择同步源,或者提供的同步信号的强度均低于第一阈值时,该同步装置可以与卫星系统同步。
第二种通信场景
同步装置确定该至少一个第一同步源选择同步信号的方式是否相同;根据该至少一个第一同步源选择同步信号是否相同,从该至少一个第一同步源中,选择该目标同步源。
例如,在该至少一个第一同步源选择同步信号的方式相同时,该同步装置按照第五优先级排序选择该目标同步源;其中,该第五优先级排序包括:同时与网络设备和卫星系统同步的同步源>与网络设备同步的同步源>与卫星系统同步的同步源。
例如,在该至少一个第一同步源选择同步信号的方式不相同时,该同步装置按照第六优先级排序,选择该目标同步源;其中,该第六优先级排序包括:按照第一方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照第一方式选择同步信号且与网络设备同步的同步源>按照第二方式选 择同步信号且同时与网络设备和卫星系统同步的同步源>按照第二方式选择同步信号且与卫星系统同步的同步源。
可选地,该第一同步源的信号强度大于或等于第二阈值。也就是说,第一同步源不仅需要按照第一方式或第二方式选择同步信号,其发射的同步信号的强度还需要大于第二阈值。该第二阈值可以基于实际情况而定。
可选地,在同步装置能够接收到其提供的同步信号的同步源中,如果均没有指示按照第一方式或第二方式选择同步源,或者提供的同步信号的强度均低于第二阈值时,该同步装置可以确定能够接收到其提供的同步信号的同步源中,是否存在至少一个第二同步源,该第二同步源的信号强度小于第二阈值且大于等于第三阈值,并按照第七优先级排序,从该至少一个第二同步源中,选择目标同步源,其中,该第七优先级排序包括:
与卫星系统同步的同步源>不与卫星系统以及不与网络设备同步的同步源。
可选地,在能够接收到其提供的同步信号的同步源提供的同步信号均小于第三阈值时,该同步装置可以自身发射同步信号,并设置自身不与GNSS和不与蜂窝网络同步。
图4是根据本申请实施例的同步装置400的示意性框图。如图4所示,该同步装置400包括:确定单元410,用于确定发射同步信号的至少一个同步源;选择单元420,用于在该至少一个同步源包括至少一个第一同步源时,基于每个该第一同步源选择同步信号的方式,从该至少一个第一同步源中,选择目标同步源;其中,该第一同步源选择同步信号的方式包括第一方式或第二方式,该第一方式为按照第一优先级排序选择同步信号,该第二方式为按照第二优先级排序选择同步信号,其中,该第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,该第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;同步单元430,用于与该目标同步源进行同步。
可选地,第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
可选地,第二优先级排序包括:直接来自于卫星系统的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步 的终端设备的同步信号。
可选地,第一同步序列包括该来自于直接与卫星系统同步的终端设备的同步信号;其中,该第一同步序列还用于指示发射该第一同步序列的终端设备直接与卫星系统同步,或者,发射该第一同步序列的终端设备通过广播信号指示自身直接与卫星系统同步;和/或,第二同步序列包括该来自于间接与卫星系统同步的终端设备的同步信号;其中,该第二同步序列还用于指示发射该第二同步序列的终端设备间接与卫星系统同步,或者,发射该第二同步序列的终端设备通过广播信号指示自身间接与卫星系统同步。
可选地,该同步装置400不在蜂窝网络的覆盖范围之内,且能接收到卫星信号;该选择单元420具体用于:确定该至少一个第一同步源选择同步信号的方式是否相同;根据该至少一个第一同步源选择同步信号是否相同,从该至少一个第一同步源中,选择该目标同步源。
可选地,该同步装置400不在蜂窝网络的覆盖范围之内,且能接收到卫星信号;该选择单元420具体用于:在每个该第一同步源选择同步信号的方式相同时,按照第三优先级排序选择该目标同步源;其中,该第三优先级排序包括:同时与蜂窝网络和卫星系统同步的同步源>与卫星系统同步的同步源>与网络设备同步的同步源。
可选地,该同步装置400不在蜂窝网络的覆盖范围之内,且能接收到卫星信号;该选择单元420具体用于:在该至少一个第一同步源选择同步信号的方式不相同时,按照第四优先级排序,选择该目标同步源;其中,该第四优先级排序包括:按照该第一方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照该第二方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照该第二方式选择同步信号且与卫星系统同步的同步源>按照该第一方式选择同步信号且与网络设备同步的同步源。
可选地,该第一同步源的信号强度大于或等于第一阈值。
可选地,该同步单元430还用于:在该至少一个同步源不包括该第一同步源时,与卫星系统同步。
可选地,该同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号;该选择单元420具体用于:确定该至少一个第一同步源选择同步信号的方式是否相同;根据该至少一个第一同步源选择同步信号是否相同,从该至少一个第一同步源中,选择该目标同步源。
可选地,该同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号;该选择单元420具体用于:在该至少一个第一同步源选择同步信号的方式相同时,按照第五优先级排序选择该目标同步源;其中,该第五优先级排序包括:同时与网络设备和卫星系统同步的同步源>与网络设备同步的同步源>与卫星系统同步的同步源。
可选地,该同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号,该选择单元420具体用于:在该至少一个第一同步源选择同步信号的方式不相同时,按照第六优先级排序,选择该目标同步源;其中,该第六优先级排序包括:按照该第一方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照该第一方式选择同步信号且与网络设备同步的同步源>按照该第二方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照该第二方式选择同步信号且与卫星系统同步的同步源。
可选地,该第一同步源的信号强度大于或等于第二阈值。
可选地,该选择单元420还用于:在该至少一个同步源不包括该第一同步源且包括至少一个第二同步源时,按照第七优先级排序选择该目标同步源,该第二同步源的信号强度小于第二阈值且大于等于第三阈值;其中,该第七优先级排序包括:与卫星系统同步的同步源>不与卫星系统以及不与网络设备同步的同步源。
可选地,该卫星系统为全球导航卫星系统GNSS,该同步装置为车载设备。
可选地,该至少一个同步源包括网络设备、终端设备和卫星系统中的至少一种。
可选地,该同步装置400可以对应于方法300中的同步装置,可以实现该同步装置的相应功能,为了简洁,在此不再赘述。
图5是根据本申请实施例的同步装置500的示意性框图。如图5所示,该同步装置500包括:接收单元510,用于接收网络设备发送的指示信息,该指示信息用于指示该同步装置选择同步源的方式,该方式为第一方式或第二方式或第三方式;该第一方式为按照第一优先级排序选择同步信号,该第二方式为按照第二优先级排序选择同步信号,该第三方式为按照第一优先级排序和第二优先级排序选择同步信号,其中,该第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,该第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;选择单元520,用于 基于该指示信息,选择目标同步源。
可选地,该选择单元520具体用于:在该指示信息指示的为该第一方式时,如果该接收单元接收不到与蜂窝网络信号相关的同步信号,该选择单元按照第二方式选择目标同步源;或,在该指示信息指示的为该第二方式时,如果该接收单元接收不到与卫星系统相关的同步信号,该选择单元按照第一方式选择目标同步源。
可选地,该选择单元520具体用于:如果该接收单元在第一预定时间接收不到与蜂窝网络信号相关的同步信号,按照该第二方式选择目标同步源;或,如果该接收单元在第二预定时间内接收不到与卫星系统相关的同步信号,按照第一方式选择目标同步源。
可选地,该第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
可选地,第二优先级排序包括:卫星系统产生的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
可选地,在该第三方式中,该第一优先级排序中的同步信号的优先级高于该第二优先级排序中的同步信号的优先级,或,该第二优先级排序中的同步信号的优先级高于该第一优先级排序中的同步信号的优先级。
可选地,该同步装置500可以对应于方法200中的同步装置,可以实现该同步装置的相应功能,为了简洁,在此不再赘述。
图6是根据本申请实施例的同步源600的示意性框图。如图6所示,该同步源600包括:确定单元610,用于确定用于获取单元620获取同步信号的方式;获取单元获取同步信号的方式包括第一方式或第二方式,该第一方式为按照第一优先级排序选择同步信号,该第二方式为按照第二优先级排序选择同步信号,其中,该第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,该第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;获取单元620,用于根据该确定单元610确定的用于获取同步信号的方式,获取第一同步信号;同步单元630,用于按照该第一同步信号进行同步;发射单元640,用于发射第二同步信号和指示信息,其中,该指示信息用于指示该同步源获取第一同步信号的方式。
可选地,该发射单元640具体用于:发射通过第一同步序列实现的第二同步信号;发射广播信息,该广播信息用于指示该指示信息。
可选地,该同步源600为直接与卫星系统同步的设备,该第一同步序列为包括该发射单元640发射的该第二同步信号的序列;或,该同步源600为间接与卫星系统同步的设备,该第一同步序列为包括该发射单元640发射的该第二同步信号的序列。
可选地,该发射单元640具体用于:发射第二同步序列,该第二同步序列包括该第二同步信号以及该指示信息。
可选地,该同步源600为直接与卫星系统同步的设备,该第二同步序列为包括该发射单元640发射的该第二同步信号的序列;或
该同步源600为间接与卫星系统同步的设备,该第二同步序列为包括该发射单元640发射的该第二同步信号的序列。
可选地,该第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
可选地,该第二优先级排序包括:卫星系统产生的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
可选地,该确定单元610具体用于:按照网络设备的指示,确定用于获取同步信号的方式。
可选地,该同步源600可以对应于方法100中的同步源,可以实现该同步源的相应功能,为了简洁,在此不再赘述。
图7是根据本申请实施例的同步装置700的示意性框图。该同步装置700包括处理器710和存储器720。存储器720,用于存放程序指令。处理器710可以调用存储器720中存放的程序指令。该同步装置700还包括用于对外通信的收发器730,和用于将处理器710、存储器720和收发器730互连的总线系统740。
处理器710用于调用存储器720中存储的指令,执行以下操作:确定发射同步信号的至少一个同步源;在该至少一个同步源包括至少一个第一同步源时,基于每个该第一同步源选择同步信号的方式,从该至少一个第一同步源中,选择目标同步源;其中,该第一同步源选择同步信号的方式包括第一 方式或第二方式,该第一方式为按照第一优先级排序选择同步信号,该第二方式为按照第二优先级排序选择同步信号,其中,该第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,该第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;与该目标同步源进行同步。
可选地,第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
可选地,第二优先级排序包括:直接来自于卫星系统的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
可选地,第一同步序列包括该来自于直接与卫星系统同步的终端设备的同步信号;其中,该第一同步序列还用于指示发射该第一同步序列的终端设备直接与卫星系统同步,或者,发射该第一同步序列的终端设备通过广播信号指示自身直接与卫星系统同步;和/或,第二同步序列包括该来自于间接与卫星系统同步的终端设备的同步信号;其中,该第二同步序列还用于指示发射该第二同步序列的终端设备间接与卫星系统同步,或者,发射该第二同步序列的终端设备通过广播信号指示自身间接与卫星系统同步。
可选地,该同步装置700不在蜂窝网络的覆盖范围之内,且能接收到卫星信号;处理器710用于调用存储器720中存储的指令,执行以下操作:确定该至少一个第一同步源选择同步信号的方式是否相同;根据该至少一个第一同步源选择同步信号是否相同,从该至少一个第一同步源中,选择该目标同步源。
可选地,该同步装置700不在蜂窝网络的覆盖范围之内,且能接收到卫星信号;处理器710用于调用存储器720中存储的指令,执行以下操作:在每个该第一同步源选择同步信号的方式相同时,该同步装置按照第三优先级排序选择该目标同步源;其中,该第三优先级排序包括:同时与蜂窝网络和卫星系统同步的同步源>与卫星系统同步的同步源>与网络设备同步的同步源。
可选地,该同步装置700不在蜂窝网络的覆盖范围之内,且能接收到卫星信号;处理器710用于调用存储器720中存储的指令,执行以下操作:在 该至少一个第一同步源选择同步信号的方式不相同时,该同步装置按照第四优先级排序,选择该目标同步源;其中,该第四优先级排序包括:按照该第一方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照该第二方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照该第二方式选择同步信号且与卫星系统同步的同步源>按照该第一方式选择同步信号且与网络设备同步的同步源。
可选地,该第一同步源的信号强度大于或等于第一阈值。
可选地,处理器710用于调用存储器720中存储的指令,执行以下操作:在该至少一个同步源不包括该第一同步源时,与卫星系统同步。
可选地,该同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号;处理器710用于调用存储器720中存储的指令,执行以下操作:确定该至少一个第一同步源选择同步信号的方式是否相同;根据该至少一个第一同步源选择同步信号是否相同,从该至少一个第一同步源中,选择该目标同步源。
可选地,该同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号;处理器710用于调用存储器720中存储的指令,执行以下操作:在该至少一个第一同步源选择同步信号的方式相同时,该同步装置按照第五优先级排序选择该目标同步源;其中,该第五优先级排序包括:同时与网络设备和卫星系统同步的同步源>与网络设备同步的同步源>与卫星系统同步的同步源。
可选地,该同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号;处理器710用于调用存储器720中存储的指令,执行以下操作:在该至少一个第一同步源选择同步信号的方式不相同时,该同步装置按照第六优先级排序,选择该目标同步源;其中,该第六优先级排序包括:按照该第一方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照该第一方式选择同步信号且与网络设备同步的同步源>按照该第二方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照该第二方式选择同步信号且与卫星系统同步的同步源。
可选地,该第一同步源的信号强度大于或等于第二阈值。
处理器710用于调用存储器720中存储的指令,执行以下操作:在该至少一个同步源不包括该第一同步源且包括至少一个第二同步源时,按照第七 优先级排序选择该目标同步源,该第二同步源的信号强度小于第二阈值且大于等于第三阈值;其中,该第七优先级排序包括:与卫星系统同步的同步源>不与卫星系统以及不与网络设备同步的同步源。
可选地,该卫星系统为全球导航卫星系统GNSS,该同步装置600为车载设备。
可选地,该至少一个同步源包括网络设备、终端设备和卫星系统中的至少一种。
可选地,该同步装置700可以对应于方法300中的同步装置,可以实现该同步装置的相应功能,为了简洁,在此不再赘述。
图8是根据本申请实施例的同步装置800的示意性框图。该同步装置800包括处理器810和存储器820。存储器820,用于存放程序指令。处理器810可以调用存储器820中存放的程序指令。该同步装置800还包括用于对外通信的收发器830,和用于将处理器810、存储器820和收发器830互连的总线系统840。
处理器810用于调用存储器820中存储的指令,执行以下操作:利用收发器830接收网络设备发送的指示信息,该指示信息用于指示该同步装置选择同步源的方式,该方式为第一方式或第二方式或第三方式;该第一方式为按照第一优先级排序选择同步信号,该第二方式为按照第二优先级排序选择同步信号,该第三方式为按照第一优先级排序和第二优先级排序选择同步信号,其中,该第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,该第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;基于该指示信息,选择目标同步源。
可选地,处理器810用于调用存储器820中存储的指令,执行以下操作:在该指示信息指示的为该第一方式时,如果该收发器830接收不到与蜂窝网络信号相关的同步信号,按照第二方式选择目标同步源;或,在该指示信息指示的为该第二方式时,如果该收发器830接收不到与卫星系统相关的同步信号,按照第一方式选择目标同步源。
可选地,处理器810用于调用存储器820中存储的指令,执行以下操作:如果该收发器830在第一预定时间接收不到与蜂窝网络信号相关的同步信号,按照该第二方式选择目标同步源;或,如果该收发器830在第二预定时间内接收不到与卫星系统相关的同步信号,按照第一方式选择目标同步源。
可选地,该第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
可选地,第二优先级排序包括:卫星系统产生的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
可选地,在该第三方式中,该第一优先级排序中的同步信号的优先级高于该第二优先级排序中的同步信号的优先级,或,该第二优先级排序中的同步信号的优先级高于该第一优先级排序中的同步信号的优先级。
可选地,该同步装置800可以对应于方法200中的同步装置,可以实现该同步装置的相应功能,为了简洁,在此不再赘述。
图9是根据本申请实施例的同步源900的示意性框图。该同步源900包括处理器910和存储器920。存储器920,用于存放程序指令。处理器910可以调用存储器920中存放的程序指令。该同步源900还包括用于对外通信的收发器930,和用于将处理器910、存储器920和收发器930互连的总线系统940。
处理器910用于调用存储器920中存储的指令,执行以下操作:确定用于获取同步信号的方式;获取同步信号的方式包括第一方式或第二方式,该第一方式为按照第一优先级排序选择同步信号,该第二方式为按照第二优先级排序选择同步信号,其中,该第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,该第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;根据确定的用于获取同步信号的方式,获取第一同步信号;按照该第一同步信号进行同步;利用收发器930发射第二同步信号和指示信息,其中,该指示信息用于指示该同步源获取第一同步信号的方式。
可选地,处理器910用于调用存储器920中存储的指令,执行以下操作:通过收发器930发射通过第一同步序列实现的第二同步信号;通过收发器930发射广播信息,该广播信息用于指示该指示信息。
可选地,该同步源为直接与卫星系统同步的设备,该第一同步序列为包括该发射器930发射的该第二同步信号的序列;或
该同步源为间接与卫星系统同步的设备,该第一同步序列为包括该发射 器930发射的该第二同步信号的序列。
可选地,处理器910用于调用存储器920中存储的指令,执行以下操作:通过收发器930发射第二同步序列,该第二同步序列包括该第二同步信号以及该指示信息。
可选地,该同步源为直接与卫星系统同步的设备,该第二同步序列为包括该发射器930发射的该第二同步信号的序列;或该同步源为间接与卫星系统同步的设备,该第二同步序列为包括该发射器930发射的该第二同步信号的序列。
可选地,该第一优先级排序包括:直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
可选地,该第二优先级排序包括:卫星系统产生的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
可选地,处理器910用于调用存储器920中存储的指令,执行以下操作:按照网络设备的指示,该同步源确定用于获取同步信号的方式。
可选地,该同步源900可以对应于方法100中的同步源,可以实现该同步源的相应功能,为了简洁,在此不再赘述。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应所述以权利要求的保护范围为准。

Claims (60)

  1. 一种同步方法,其特征在于,包括:
    同步装置确定发射同步信号的至少一个同步源;
    在所述至少一个同步源包括至少一个第一同步源时,基于每个所述第一同步源选择同步信号的方式,从所述至少一个第一同步源中,所述同步装置选择目标同步源;其中,所述第一同步源选择同步信号的方式包括第一方式或第二方式,所述第一方式为按照第一优先级排序选择同步信号,所述第二方式为按照第二优先级排序选择同步信号,其中,所述第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,所述第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;
    所述同步装置与所述目标同步源进行同步。
  2. 根据权利要求1所述的方法,其特征在于,第一优先级排序包括:
    直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
  3. 根据权利要求1或2所述的方法,其特征在于,第二优先级排序包括:
    直接来自于卫星系统的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
  4. 根据权利要求3所述的方法,其特征在于,第一同步序列包括所述来自于直接与卫星系统同步的终端设备的同步信号;其中,所述第一同步序列还用于指示发射所述第一同步序列的终端设备直接与卫星系统同步,或者,发射所述第一同步序列的终端设备通过广播信号指示自身直接与卫星系统同步;和/或,
    第二同步序列包括所述来自于间接与卫星系统同步的终端设备的同步信号;其中,所述第二同步序列还用于指示发射所述第二同步序列的终端设备间接与卫星系统同步,或者,发射所述第二同步序列的终端设备通过广播信号指示自身间接与卫星系统同步。
  5. 根据权利要求1至4中任一项所述的方法,所述同步装置不在蜂窝网络的覆盖范围之内,且能接收到卫星信号;
    从所述至少一个第一同步源中,所述同步装置选择目标同步源,包括:
    确定所述至少一个第一同步源选择同步信号的方式是否相同;
    根据所述至少一个第一同步源选择同步信号是否相同,从所述至少一个第一同步源中,选择所述目标同步源。
  6. 根据权利要求5所述的方法,其特征在于,根据所述至少一个第一同步源选择同步信号是否相同,从所述至少一个第一同步源中,选择所述目标同步源,包括:
    在每个所述第一同步源选择同步信号的方式相同时,所述同步装置按照第三优先级排序选择所述目标同步源;
    其中,所述第三优先级排序包括:
    同时与蜂窝网络和卫星系统同步的同步源>与卫星系统同步的同步源>与网络设备同步的同步源。
  7. 根据权利要求5所述的方法,其特征在于,根据所述至少一个第一同步源选择同步信号是否相同,从所述至少一个第一同步源中,选择所述目标同步源,包括:
    在所述至少一个第一同步源选择同步信号的方式不相同时,所述同步装置按照第四优先级排序,选择所述目标同步源;
    其中,所述第四优先级排序包括:
    按照所述第一方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照所述第二方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照所述第二方式选择同步信号且与卫星系统同步的同步源>按照所述第一方式选择同步信号且与网络设备同步的同步源。
  8. 根据权利要求5至7中任一项所述的方法,其特征在于,所述第一同步源的信号强度大于或等于第一阈值。
  9. 根据权利要求8所述的方法,其特征在于,所述方法还包括:
    在所述至少一个同步源不包括所述第一同步源时,所述同步装置与卫星系统同步。
  10. 根据权利要求1至4中任一项所述的方法,其特征在于,所述同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号;
    从所述至少一个第一同步源中,所述同步装置选择目标同步源,包括:
    确定所述至少一个第一同步源选择同步信号的方式是否相同;
    根据所述至少一个第一同步源选择同步信号是否相同,从所述至少一个第一同步源中,选择所述目标同步源。
  11. 根据权利要求10所述的方法,其特征在于,根据所述第一同步源选择同步信号是否相同,从所述至少一个同步源中,选择所述目标同步源,包括:
    在所述至少一个第一同步源选择同步信号的方式相同时,所述同步装置按照第五优先级排序选择所述目标同步源;
    其中,所述第五优先级排序包括:
    同时与网络设备和卫星系统同步的同步源>与网络设备同步的同步源>与卫星系统同步的同步源。
  12. 根据权利要求10或11所述的方法,其特征在于,根据所述至少一个第一同步源选择同步信号是否相同,从所述至少一个第一同步源中,选择所述目标同步源,包括:
    在所述至少一个第一同步源选择同步信号的方式不相同时,所述同步装置按照第六优先级排序,选择所述目标同步源;
    其中,所述第六优先级排序包括:
    按照所述第一方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照所述第一方式选择同步信号且与网络设备同步的同步源>按照所述第二方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照所述第二方式选择同步信号且与卫星系统同步的同步源。
  13. 根据权利要求10至12中任一项所述的方法,其特征在于,所述第一同步源的信号强度大于或等于第二阈值。
  14. 根据权利要求13所述的方法,其特征在于,所述方法还包括:
    在所述至少一个同步源不包括所述第一同步源且包括至少一个第二同步源时,所述同步装置按照第七优先级排序选择所述目标同步源,所述第二同步源的信号强度小于第二阈值且大于等于第三阈值;
    其中,所述第七优先级排序包括:
    与卫星系统同步的同步源>不与卫星系统以及不与网络设备同步的同步源。
  15. 根据权利要求1至14中任一项所述的方法,其特征在于,所述卫星系统为全球导航卫星系统GNSS,所述同步装置为车载设备。
  16. 根据权利要求1至15中任一项所述的方法,其特征在于,所述至少一个同步源包括网络设备、终端设备和卫星系统中的至少一种。
  17. 一种同步方法,其特征在于,包括:
    同步装置接收网络设备发送的指示信息,所述指示信息用于指示所述同步装置选择同步源的方式,所述方式为第一方式或第二方式或第三方式;
    所述第一方式为按照第一优先级排序选择同步信号,所述第二方式为按照第二优先级排序选择同步信号,所述第三方式为按照第一优先级排序和第二优先级排序选择同步信号,其中,所述第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,所述第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;
    所述同步装置基于所述指示信息,选择目标同步源。
  18. 根据权利要求17所述的方法,其特征在于,所述同步装置基于所述指示信息,选择目标同步源,包括:
    在所述指示信息指示的为所述第一方式时,如果所述同步装置接收不到与蜂窝网络信号相关的同步信号,所述同步装置按照第二方式选择目标同步源;或
    在所述指示信息指示的为所述第二方式时,如果所述同步装置接收不到与卫星系统相关的同步信号,所述同步装置按照第一方式选择目标同步源。
  19. 根据权利要求18所述的方法,其特征在于,
    如果所述同步装置接收不到与蜂窝网络信号相关的同步信号,所述同步装置按照第二方式选择目标同步源,包括:如果所述同步装置在第一预定时间接收不到与蜂窝网络信号相关的同步信号,所述同步装置按照所述第二方式选择目标同步源;或,
    如果所述同步装置接收不到与卫星系统相关的同步信号,所述同步装置按照第一方式选择目标同步源,包括:如果所述同步装置在第二预定时间内接收不到与卫星系统相关的同步信号,所述同步装置按照第一方式选择目标同步源。
  20. 根据权利要求19所述的同步方法,其特征在于,所述第一优先级排序包括:
    直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
  21. 根据权利要求19或20所述的方法,其特征在于,第二优先级排序包括:
    卫星系统产生的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
  22. 根据权利要求17至21中任一项所述的方法,其特征在于,在所述第三方式中,
    所述第一优先级排序中的同步信号的优先级高于所述第二优先级排序中的同步信号的优先级,或
    所述第二优先级排序中的同步信号的优先级高于所述第一优先级排序中的同步信号的优先级。
  23. 一种同步方法,其特征在于,包括:
    同步源确定用于获取同步信号的方式;同步源获取同步信号的方式包括第一方式或第二方式,所述第一方式为按照第一优先级排序选择同步信号,所述第二方式为按照第二优先级排序选择同步信号,其中,所述第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,所述第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;
    根据确定的用于获取同步信号的方式,所述同步源获取第一同步信号;
    所述同步源按照所述第一同步信号进行同步;
    所述同步源发射第二同步信号和指示信息,其中,所述指示信息用于指示所述同步源获取第一同步信号的方式。
  24. 根据权利要求23所述的方法,其特征在于,所述同步源发射同步信号和指示信息,包括:
    发射通过第一同步序列实现的第二同步信号;
    发射广播信息,所述广播信息用于指示所述指示信息。
  25. 根据权利要求24所述的方法,其特征在于,所述同步源为直接与卫星系统同步的设备,所述第一同步序列为包括所述同步源发射的所述第二同步信号的序列;或
    所述同步源为间接与卫星系统同步的设备,所述第一同步序列为包括所述同步源发射的所述第二同步信号的序列。
  26. 根据权利要求23所述的方法,其特征在于,所述同步源发射同步信号和指示信息,包括:
    发射第二同步序列,所述第二同步序列包括所述第二同步信号以及所述指示信息。
  27. 根据权利要求26所述的方法,其特征在于,
    所述同步源为直接与卫星系统同步的设备,所述第二同步序列为包括所述同步源发射的所述第二同步信号的序列;或
    所述同步源为间接与卫星系统同步的设备,所述第二同步序列为包括所述同步源发射的所述第二同步信号的序列。
  28. 根据权利要求23至27中任一项所述的方法,其特征在于,所述第一优先级排序包括:
    直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
  29. 根据权利要求23至28中任一项所述的方法,其特征在于,所述第二优先级排序包括:
    卫星系统产生的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
  30. 根据权利要求23至29中任一项所述的方法,其特征在于,同步源确定用于获取同步信号的方式,包括:
    按照网络设备的指示,所述同步源确定用于获取同步信号的方式。
  31. 一种同步装置,其特征在于,包括:
    确定单元,用于确定发射同步信号的至少一个同步源;
    选择单元,用于在所述至少一个同步源包括至少一个第一同步源时,基于每个所述第一同步源选择同步信号的方式,从所述至少一个第一同步源中,选择目标同步源;其中,所述第一同步源选择同步信号的方式包括第一方式或第二方式,所述第一方式为按照第一优先级排序选择同步信号,所述第二方式为按照第二优先级排序选择同步信号,其中,所述第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,所述第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;
    同步单元,用于与所述目标同步源进行同步。
  32. 根据权利要求31所述的同步装置,其特征在于,第一优先级排序包括:
    直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
  33. 根据权利要求31或32所述的同步装置,其特征在于,第二优先级 排序包括:
    直接来自于卫星系统的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
  34. 根据权利要求33所述的同步装置,其特征在于,第一同步序列包括所述来自于直接与卫星系统同步的终端设备的同步信号;其中,所述第一同步序列还用于指示发射所述第一同步序列的终端设备直接与卫星系统同步,或者,发射所述第一同步序列的终端设备通过广播信号指示自身直接与卫星系统同步;和/或,
    第二同步序列包括所述来自于间接与卫星系统同步的终端设备的同步信号;其中,所述第二同步序列还用于指示发射所述第二同步序列的终端设备间接与卫星系统同步,或者,发射所述第二同步序列的终端设备通过广播信号指示自身间接与卫星系统同步。
  35. 根据权利要求31至34中任一项所述的同步装置,所述同步装置不在蜂窝网络的覆盖范围之内,且能接收到卫星信号;
    所述选择单元具体用于:
    确定所述至少一个第一同步源选择同步信号的方式是否相同;
    根据所述至少一个第一同步源选择同步信号是否相同,从所述至少一个第一同步源中,选择所述目标同步源。
  36. 根据权利要求35所述的同步装置,其特征在于,所述选择单元具体用于:
    在每个所述第一同步源选择同步信号的方式相同时,按照第三优先级排序选择所述目标同步源;
    其中,所述第三优先级排序包括:
    同时与蜂窝网络和卫星系统同步的同步源>与卫星系统同步的同步源>与网络设备同步的同步源。
  37. 根据权利要求35所述的同步装置,其特征在于,所述选择单元具体用于:
    在所述至少一个第一同步源选择同步信号的方式不相同时,按照第四优先级排序,选择所述目标同步源;
    其中,所述第四优先级排序包括:
    按照所述第一方式选择同步信号且同时与网络设备和卫星系统同步的 同步源>按照所述第二方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照所述第二方式选择同步信号且与卫星系统同步的同步源>按照所述第一方式选择同步信号且与网络设备同步的同步源。
  38. 根据权利要求35至37中任一项所述的同步装置,其特征在于,所述第一同步源的信号强度大于或等于第一阈值。
  39. 根据权利要求38所述的同步装置,其特征在于,所述同步单元还用于:
    在所述至少一个同步源不包括所述第一同步源时,与卫星系统同步。
  40. 根据权利要求31至34中任一项所述的同步装置,其特征在于,所述同步装置不在蜂窝网络的覆盖范围之内,且不能接收到卫星信号;
    所述选择单元具体用于:
    确定所述至少一个第一同步源选择同步信号的方式是否相同;
    根据所述至少一个第一同步源选择同步信号是否相同,从所述至少一个第一同步源中,选择所述目标同步源。
  41. 根据权利要求40所述的同步装置,其特征在于,所述选择单元具体用于:
    在所述至少一个第一同步源选择同步信号的方式相同时,按照第五优先级排序选择所述目标同步源;
    其中,所述第五优先级排序包括:
    同时与网络设备和卫星系统同步的同步源>与网络设备同步的同步源>与卫星系统同步的同步源。
  42. 根据权利要求40或41所述的同步装置,其特征在于,所述选择单元具体用于:
    在所述至少一个第一同步源选择同步信号的方式不相同时,按照第六优先级排序,选择所述目标同步源;
    其中,所述第六优先级排序包括:
    按照所述第一方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照所述第一方式选择同步信号且与网络设备同步的同步源>按照所述第二方式选择同步信号且同时与网络设备和卫星系统同步的同步源>按照所述第二方式选择同步信号且与卫星系统同步的同步源。
  43. 根据权利要求40至42中任一项所述的同步装置,其特征在于,所 述第一同步源的信号强度大于或等于第二阈值。
  44. 根据权利要求43所述的同步装置,其特征在于,所述选择单元还用于:
    在所述至少一个同步源不包括所述第一同步源且包括至少一个第二同步源时,按照第七优先级排序选择所述目标同步源,所述第二同步源的信号强度小于第二阈值且大于等于第三阈值;
    其中,所述第七优先级排序包括:
    与卫星系统同步的同步源>不与卫星系统以及不与网络设备同步的同步源。
  45. 根据权利要求31至44中任一项所述的同步装置,其特征在于,所述卫星系统为全球导航卫星系统GNSS,所述同步装置为车载设备。
  46. 根据权利要求31至45中任一项所述的同步装置,其特征在于,所述至少一个同步源包括网络设备、终端设备和卫星系统中的至少一种。
  47. 一种同步装置,其特征在于,包括:
    接收单元,用于接收网络设备发送的指示信息,所述指示信息用于指示所述同步装置选择同步源的方式,所述方式为第一方式或第二方式或第三方式;
    所述第一方式为按照第一优先级排序选择同步信号,所述第二方式为按照第二优先级排序选择同步信号,所述第三方式为按照第一优先级排序和第二优先级排序选择同步信号,其中,所述第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,所述第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;
    选择单元,用于基于所述指示信息,选择目标同步源。
  48. 根据权利要求47所述的同步装置,其特征在于,所述选择单元具体用于:
    在所述指示信息指示的为所述第一方式时,如果所述接收单元接收不到与蜂窝网络信号相关的同步信号,所述选择单元按照第二方式选择目标同步源;或
    在所述指示信息指示的为所述第二方式时,如果所述接收单元接收不到与卫星系统相关的同步信号,所述选择单元按照第一方式选择目标同步源。
  49. 根据权利要求48所述的同步装置,其特征在于,
    所述选择单元具体用于:
    如果所述接收单元在第一预定时间接收不到与蜂窝网络信号相关的同步信号,按照所述第二方式选择目标同步源;或,
    如果所述接收单元在第二预定时间内接收不到与卫星系统相关的同步信号,按照第一方式选择目标同步源。
  50. 根据权利要求49所述的同步装置,其特征在于,所述第一优先级排序包括:
    直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
  51. 根据权利要求49或50所述的同步装置,其特征在于,第二优先级排序包括:
    卫星系统产生的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
  52. 根据权利要求47至51中任一项所述的同步装置,其特征在于,在所述第三方式中,
    所述第一优先级排序中的同步信号的优先级高于所述第二优先级排序中的同步信号的优先级,或
    所述第二优先级排序中的同步信号的优先级高于所述第一优先级排序中的同步信号的优先级。
  53. 一种同步源,其特征在于,包括:
    确定单元,用于确定用于获取单元获取同步信号的方式;获取单元获取同步信号的方式包括第一方式或第二方式,所述第一方式为按照第一优先级排序选择同步信号,所述第二方式为按照第二优先级排序选择同步信号,其中,所述第一优先级排序是按照同步信号与蜂窝网络的相关性对同步信号进行的排序,所述第二优先级排序是按照同步信号与卫星系统的相关性对同步信号进行的排序;
    获取单元,用于根据所述确定单元确定的用于获取同步信号的方式,获取第一同步信号;
    同步单元,用于按照所述第一同步信号进行同步;
    发射单元,用于发射第二同步信号和指示信息,其中,所述指示信息用于指示所述同步源获取第一同步信号的方式。
  54. 根据权利要求53所述的同步源,其特征在于,所述发射单元具体用于:
    发射通过第一同步序列实现的第二同步信号;
    发射广播信息,所述广播信息用于指示所述指示信息。
  55. 根据权利要求54所述的同步源,其特征在于,所述同步源为直接与卫星系统同步的设备,所述第一同步序列为包括所述发射单元发射的所述第二同步信号的序列;或
    所述同步源为间接与卫星系统同步的设备,所述第一同步序列为包括所述发射单元发射的所述第二同步信号的序列。
  56. 根据权利要求53所述的同步源,其特征在于,所述发射单元具体用于:
    发射第二同步序列,所述第二同步序列包括所述第二同步信号以及所述指示信息。
  57. 根据权利要求56所述的同步源,其特征在于,
    所述同步源为直接与卫星系统同步的设备,所述第二同步序列为包括所述发射单元发射的所述第二同步信号的序列;或
    所述同步源为间接与卫星系统同步的设备,所述第二同步序列为包括所述发射单元发射的所述第二同步信号的序列。
  58. 根据权利要求53至57中任一项所述的同步源,其特征在于,所述第一优先级排序包括:
    直接来自于网络设备的同步信号>来自于直接与网络设备同步的终端设备的同步信号>来自于间接与网络设备同步的终端设备的同步信号。
  59. 根据权利要求53至58中任一项所述的同步源,其特征在于,所述第二优先级排序包括:
    卫星系统产生的同步信号>来自于直接与卫星系统同步的终端设备的同步信号>来自于间接与卫星系统同步的终端设备的同步信号。
  60. 根据权利要求53至59中任一项所述的同步源,其特征在于,所述确定单元具体用于:
    按照网络设备的指示,确定用于获取同步信号的方式。
PCT/CN2016/077659 2016-03-29 2016-03-29 同步方法、同步装置和同步源 Ceased WO2017166045A1 (zh)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PCT/CN2016/077659 WO2017166045A1 (zh) 2016-03-29 2016-03-29 同步方法、同步装置和同步源
EP16895826.2A EP3383103A4 (en) 2016-03-29 2016-03-29 SYNCHRONIZATION PROCESS, SYNCHRONIZATION DEVICE AND SYNCHRONIZATION SOURCE
KR1020187019862A KR20180127309A (ko) 2016-03-29 2016-03-29 동기화 방법, 동기화 장치 및 동기화 소스
US16/066,176 US11051264B2 (en) 2016-03-29 2016-03-29 Synchronization method, synchronization device and synchronization source
JP2018535869A JP6759342B2 (ja) 2016-03-29 2016-03-29 同期方法、同期装置、及び同期ソース
CN201680074856.0A CN108432304A (zh) 2016-03-29 2016-03-29 同步方法、同步装置和同步源
TW106110453A TWI753893B (zh) 2016-03-29 2017-03-29 同步方法、同步裝置和同步源

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/077659 WO2017166045A1 (zh) 2016-03-29 2016-03-29 同步方法、同步装置和同步源

Publications (1)

Publication Number Publication Date
WO2017166045A1 true WO2017166045A1 (zh) 2017-10-05

Family

ID=59963328

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/077659 Ceased WO2017166045A1 (zh) 2016-03-29 2016-03-29 同步方法、同步装置和同步源

Country Status (7)

Country Link
US (1) US11051264B2 (zh)
EP (1) EP3383103A4 (zh)
JP (1) JP6759342B2 (zh)
KR (1) KR20180127309A (zh)
CN (1) CN108432304A (zh)
TW (1) TWI753893B (zh)
WO (1) WO2017166045A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018058375A1 (zh) * 2016-09-28 2018-04-05 华为技术有限公司 通信方法及终端
CN110730496B (zh) * 2018-06-29 2021-04-06 电信科学技术研究院有限公司 一种同步的方法及终端设备
CN112615704B (zh) 2018-08-10 2022-03-08 华为技术有限公司 一种同步信号的传输方法和装置
CN111263432B (zh) * 2019-01-04 2021-06-29 维沃移动通信有限公司 信息传输方法及设备
EP3716701A1 (en) * 2019-03-29 2020-09-30 Mitsubishi Electric R&D Centre Europe B.V. Signaling method for d2d synchronization
WO2020224741A1 (en) 2019-05-03 2020-11-12 Huawei Technologies Co., Ltd. Devices and methods for indicating a second-link retransmission over a first link
CN118303007A (zh) * 2022-11-04 2024-07-05 北京小米移动软件有限公司 同步源选择方法和装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101983532A (zh) * 2008-02-01 2011-03-02 高通股份有限公司 无线网络同步
US20150327201A1 (en) * 2014-05-08 2015-11-12 Intel IP Corporation Systems, methods, and devices for synchronization source selection for device-to-device communication
CN105101391A (zh) * 2014-05-09 2015-11-25 上海贝尔股份有限公司 D2d系统中同步源协调、调整以及竞争同步源的方法和装置
CN105101394A (zh) * 2014-05-08 2015-11-25 宏碁股份有限公司 形成用于d2d通信的n跃点同步网络的方法
CN105281884A (zh) * 2014-07-24 2016-01-27 北京信威通信技术股份有限公司 一种无中心网络中的节点时间同步方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US21536A (en) * 1858-09-14 holmes
US7733835B2 (en) * 2005-07-20 2010-06-08 Interdigital Technology Corporation Method and system for reducing power consumption of a wireless transmit/receive unit
US8605678B2 (en) * 2007-01-31 2013-12-10 Broadcom Corporation Anticipatory hand-off setup between networks
WO2008136106A1 (ja) * 2007-04-25 2008-11-13 Fujitsu Limited 無線リソース共有機能を有する移動無線通信システム
JP5290589B2 (ja) 2008-02-06 2013-09-18 ルネサスエレクトロニクス株式会社 半導体集積回路
JPWO2010073441A1 (ja) 2008-12-26 2012-05-31 シャープ株式会社 同期装置、受信装置、同期方法、及び受信方法
CN101938824B (zh) 2009-06-29 2013-01-23 中国移动通信集团公司 空口同步方法、设备及系统
KR102049046B1 (ko) 2011-09-14 2019-11-26 한국전자통신연구원 단말간 직접통신 방법 및 이를 지원하는 단말
JP6412872B2 (ja) 2013-09-27 2018-10-24 京セラ株式会社 ユーザ端末、方法及びプロセッサ
US9251629B2 (en) * 2013-12-03 2016-02-02 Hti Ip, Llc Determining a time gap variance for use in monitoring for disconnect of a telematics device
CN104754740B (zh) 2013-12-31 2018-12-14 电信科学技术研究院 资源分配方法和装置
CN104812050B (zh) 2014-01-24 2019-11-15 中兴通讯股份有限公司 一种实现空口同步的方法、小区和系统
US20150264588A1 (en) 2014-03-14 2015-09-17 Samsung Electronics Co., Ltd. Methods and apparatus for synchronization in device-to-device communication networks
WO2015143751A1 (zh) 2014-03-24 2015-10-01 华为终端有限公司 一种无线通信方法及无线终端
AU2014403118B2 (en) * 2014-08-07 2018-11-08 Telefonaktiebolaget Lm Ericsson (Publ) Methods implemented in access nodes for maintaining synchronization in radio access network and associated access nodes
CN104735774B (zh) 2015-03-23 2018-05-01 京信通信系统(中国)有限公司 一种基于组网的空口同步方法与装置
US10548106B2 (en) 2015-07-08 2020-01-28 Lg Electronics Inc. Method and device for transmitting/receiving sync signal of device-to-device communication terminal in wireless communication system
JP6859590B2 (ja) * 2015-11-06 2021-04-14 ソニー株式会社 通信装置および通信方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101983532A (zh) * 2008-02-01 2011-03-02 高通股份有限公司 无线网络同步
US20150327201A1 (en) * 2014-05-08 2015-11-12 Intel IP Corporation Systems, methods, and devices for synchronization source selection for device-to-device communication
CN105101394A (zh) * 2014-05-08 2015-11-25 宏碁股份有限公司 形成用于d2d通信的n跃点同步网络的方法
CN105101391A (zh) * 2014-05-09 2015-11-25 上海贝尔股份有限公司 D2d系统中同步源协调、调整以及竞争同步源的方法和装置
CN105281884A (zh) * 2014-07-24 2016-01-27 北京信威通信技术股份有限公司 一种无中心网络中的节点时间同步方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3383103A4 *

Also Published As

Publication number Publication date
US20190007918A1 (en) 2019-01-03
US11051264B2 (en) 2021-06-29
JP2019512899A (ja) 2019-05-16
CN108432304A (zh) 2018-08-21
EP3383103A4 (en) 2019-07-10
EP3383103A1 (en) 2018-10-03
JP6759342B2 (ja) 2020-09-23
TWI753893B (zh) 2022-02-01
KR20180127309A (ko) 2018-11-28
TW201735692A (zh) 2017-10-01

Similar Documents

Publication Publication Date Title
TWI753893B (zh) 同步方法、同步裝置和同步源
CN111867043B (zh) 同步方法、用户设备和基站
JP6816857B2 (ja) 同期情報送信方法および装置
US10425220B2 (en) Method for receiving and transmitting synchronization signal and wireless communication device
US11576133B2 (en) Timing synchronization of 5G V2X sidelink transmissions
CN108029084A (zh) 用户装置以及同步方法
CN110972106B (zh) 同步方法、通信装置和网络设备
US10750463B2 (en) Method and device for identifying synchronization priority
WO2020001364A1 (zh) 一种同步的方法及终端设备
CN104796367A (zh) 一种同步信息的发送方法、检测方法及用户设备
JP2020518180A (ja) 信号処理の方法及び装置
CN108702206B (zh) 同步方法、终端和网络设备
CN105493581B (zh) 同步通信的方法和通信节点
CN108632980B (zh) 一种同步方法及终端
CN112399549A (zh) 侧链路同步方法和用户设备
HK1253055A1 (zh) 同步方法、同步装置和同步源
CN115038061A (zh) 一种同步方法及设备

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2016895826

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2016895826

Country of ref document: EP

Effective date: 20180625

ENP Entry into the national phase

Ref document number: 2018535869

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 20187019862

Country of ref document: KR

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16895826

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE