WO2018219334A1 - Procédé et dispositif de synchronisation d'horloges - Google Patents

Procédé et dispositif de synchronisation d'horloges Download PDF

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Publication number
WO2018219334A1
WO2018219334A1 PCT/CN2018/089374 CN2018089374W WO2018219334A1 WO 2018219334 A1 WO2018219334 A1 WO 2018219334A1 CN 2018089374 W CN2018089374 W CN 2018089374W WO 2018219334 A1 WO2018219334 A1 WO 2018219334A1
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WO
WIPO (PCT)
Prior art keywords
clock synchronization
synchronization signal
downlink
time information
uplink
Prior art date
Application number
PCT/CN2018/089374
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English (en)
Chinese (zh)
Inventor
于峰
蔺波
熊新
于海凤
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华为技术有限公司
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Publication of WO2018219334A1 publication Critical patent/WO2018219334A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0644—External master-clock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a clock synchronization method and device.
  • robots are increasingly being used for intelligent manufacturing on production lines, and in many scenarios, multiple robots are required to work together to accomplish a certain task.
  • multiple robots are required to perform a predetermined action at an absolute time point to jointly complete an assembly task; further example, the robot 1, the robot 2, and the robot 3 jointly complete one
  • the robot 1 is responsible for supporting the A side of the part
  • the robot 2 is responsible for supporting the B side of the part
  • the robot 3 is responsible for mounting the nut to the supported part.
  • the robot 1 and the robot 2 need to jointly support the parts at one point, and then the robot 3 needs to install the nuts for the parts that are supported at 1:5, and finally, the robot 1 and the robot 2 put down the parts at 1:10. Then, at this time, it is necessary to ensure that the absolute time between the robot 1, the robot 2, and the robot 3 is consistent. If the absolute times of the three are inconsistent, the advance or lag of the robot motion may occur, resulting in assembly failure of the parts.
  • the industry's recommended solution is to use the wireless network, specifically: the clock of the base station is used as the main clock, the clock of the terminal such as the robot is used as the slave clock, and then the time information of the base station is sent to Terminals such as robots, and these terminals will adjust their own time information according to the time information of the base station.
  • the specific synchronization process is:
  • Step A At time t0, the base station sends a first downlink clock synchronization signal (for example, Sync) to the terminal, and the terminal records the time t1 when the first downlink clock synchronization signal is received;
  • a first downlink clock synchronization signal for example, Sync
  • Step B The base station sends a second downlink clock synchronization signal (for example, Follow_up) to the terminal, where the second downlink clock synchronization signal carries information of time t0.
  • a second downlink clock synchronization signal for example, Follow_up
  • Step C The terminal receives the second downlink clock synchronization signal, acquires t0 carried therein, and sends an uplink clock synchronization signal (for example, Delay_Req) to the base station at time t2;
  • an uplink clock synchronization signal for example, Delay_Req
  • Step D The base station records the time t3 when the uplink clock synchronization signal is received, and sends a third downlink clock synchronization signal (for example, Delay_Resp) to the terminal, where the third downlink clock synchronization signal carries information of time t3.
  • a third downlink clock synchronization signal for example, Delay_Resp
  • Step E The terminal receives the third downlink clock synchronization signal, and acquires t3 carried therein;
  • Step F The terminal calculates a deviation from the base station clock according to t0, t1, t2, and t3.
  • Step G The terminal adjusts its own clock according to the deviation to achieve synchronization with the base station clock.
  • step A-step G the clock synchronization between the base station and the terminal is to be performed by using the wireless network
  • step A-step G 7 steps are required, and in the 7 steps, step A- In some steps of step D, the air interface is used to transmit the message, so that the overhead of the air interface is large.
  • the application provides a clock synchronization method and device to reduce air interface overhead.
  • the first aspect provides a clock synchronization method, including: a terminal device sends an uplink clock synchronization signal to a network device, and records first time information for transmitting the uplink clock synchronization signal; and the terminal device receives a downlink clock sent by the network device. a synchronization signal, and recording second time information of the downlink clock synchronization signal; the downlink clock synchronization signal carries a third time information that the network device receives the uplink clock synchronization signal, and sends the downlink clock synchronization The fourth time information of the signal; the terminal device calculates a clock offset of the network device and the terminal device based on the first time information, the second time information, the third time information, and the fourth time information.
  • the clock synchronization between the terminal device and the network device can be realized only by transmitting the signal twice in the air interface, which is an uplink clock synchronization signal and a downlink clock synchronization signal, and is required to be in the air interface in the prior art.
  • Clock synchronization can be achieved by transmitting four signals, which can reduce the air interface overhead.
  • the downlink clock synchronization signal is a first downlink clock synchronization signal; the terminal device receives a downlink clock synchronization signal sent by the network device, and records a second time of receiving the downlink clock synchronization signal.
  • the information includes: receiving, by the terminal device, a first downlink clock synchronization signal sent by the network device, and recording second time information of the first downlink clock synchronization signal, where the first downlink clock synchronization signal is carried There are the third time information and the fourth time information.
  • the downlink clock synchronization signal is the first downlink clock synchronization signal
  • only the two signals need to be transmitted in the empty product, which are the first downlink clock synchronization signal and the uplink clock synchronization signal, respectively, which can further reduce the air interface overhead.
  • the uplink clock synchronization signal is a delay request message, and the first downlink clock synchronization signal is a timing signal; or the uplink clock synchronization signal is a random access sequence, where the The downlink clock synchronization signal is a downlink reference signal; or the uplink clock synchronization signal is an uplink reference signal, and the first downlink clock synchronization signal is a downlink reference signal.
  • the downlink clock synchronization signal includes a first downlink clock synchronization signal and a second downlink clock synchronization signal; the terminal device receives a downlink clock synchronization signal sent by the network device, and records and receives the downlink
  • the second time information of the clock synchronization signal includes: receiving, by the terminal device, a first downlink clock synchronization signal sent by the network device, and recording second time information of receiving the first downlink clock synchronization signal; Receiving, by the network device, a second downlink clock synchronization signal, where the second downlink clock synchronization signal carries the third time information and the fourth time information.
  • the downlink clock synchronization signal includes the first downlink clock synchronization signal and the second downlink clock synchronization signal
  • the synchronization signal can reduce the port overhead.
  • the uplink clock synchronization signal is a delay request message, the first downlink clock synchronization signal is a timing signal, and the second downlink clock synchronization signal is a delay response message; or
  • the uplink clock synchronization signal is a random access sequence, the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a random access response; or the uplink clock synchronization signal is an uplink reference
  • the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a delay response.
  • a second aspect provides a clock synchronization method, including: receiving, by a network device, an uplink clock synchronization signal sent by a terminal device, and recording third time information of receiving the uplink clock synchronization signal; and sending, by the network end device, a downlink clock synchronization signal Go to the terminal device, and record the fourth time information of the downlink clock synchronization signal; the downlink clock synchronization signal carries the third time information and the fourth time information.
  • the downlink clock synchronization signal is a first downlink clock synchronization signal; the network device sends a downlink clock synchronization signal to the terminal device, and records the fourth time information of the downlink clock synchronization signal.
  • the network device sends the first downlink clock synchronization signal to the terminal device, and records the fourth time information of the first downlink clock synchronization signal, where the first downlink clock synchronization signal is carried. There are the third information and the fourth information.
  • the uplink clock synchronization signal is a delay request message, and the first downlink clock synchronization signal is a timing signal; or the uplink clock synchronization signal is a random access sequence, where the The downlink clock synchronization signal is a downlink reference signal; or the uplink clock synchronization signal is an uplink reference signal, and the first downlink clock synchronization signal is a downlink reference signal.
  • the downlink clock synchronization signal includes a first downlink clock synchronization signal and a second downlink clock synchronization signal; the network termination device sends a downlink clock synchronization signal to the terminal device, and records the downlink.
  • the fourth time information of the clock synchronization signal includes: the network device sends a first downlink clock synchronization signal to the terminal device, and records fourth time information of sending the first downlink clock synchronization signal; the network device sends The second downlink clock synchronization signal is sent to the terminal device, and the second downlink clock synchronization signal carries the third time information and the fourth time information.
  • the uplink clock synchronization signal is a delay request message, the first downlink clock synchronization signal is a timing signal, and the second downlink clock synchronization signal is a delay response message; or
  • the uplink clock synchronization signal is a random access sequence, the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a random access response; or the uplink clock synchronization signal is an uplink reference
  • the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a delay response.
  • a third aspect provides a clock synchronization method, including: a terminal device sends a first uplink clock synchronization signal to a network device, and records first time information of the first uplink clock synchronization signal; and the terminal device receives the network device Sending a first downlink clock synchronization signal, and recording second time information of receiving the first downlink clock synchronization signal; the terminal device sends a second uplink clock synchronization signal to the network device, where the second uplink clock is synchronized The signal carries the first time information and the second time information; the terminal device receives a second downlink clock synchronization signal sent by the network device, and the second downlink clock synchronization signal carries clock deviation information, where the clock The deviation information is a clock deviation of the terminal device and the network device determined by the network device based on the first time information, the second time information, the third time information, and the fourth time information, where the third time information is Receiving time information of the first uplink clock synchronization signal, the fourth time information The time information of the network device transmitting
  • the clock synchronization process is triggered by the terminal device, and the network device calculates the clock offset of the two. Then, the network device periodically broadcasts the synchronization signal relative to the prior art.
  • the terminal that needs clock synchronization is used in this application.
  • the clock synchronization process can be triggered to reduce the air interface overhead.
  • the network device calculates the clock deviation between the two, which can save power consumption of the terminal device.
  • the first uplink clock synchronization signal is a delay request message
  • the second uplink clock synchronization signal is a timing response message
  • the first downlink clock synchronization signal is a timing signal
  • the second downlink clock synchronization signal is a timing response message.
  • the fourth aspect provides a clock synchronization method, including: receiving, by a network device, a first uplink clock synchronization signal sent by a terminal device, and recording third time information of receiving the first uplink clock synchronization signal; a downlink clock synchronization signal, and recording fourth time information of the first downlink clock synchronization signal; the network device receiving a second uplink clock synchronization signal, where the second uplink clock synchronization signal carries the Transmitting, by the terminal device, first time information of the first uplink clock synchronization signal and second time information of receiving the first downlink clock synchronization signal; the network device is based on the first time information, the second time information, and the third The time information and the fourth time information are used to calculate clock deviation information of the terminal and the network device; the network device sends a second downlink clock synchronization signal, and the second downlink clock synchronization signal carries the clock deviation information.
  • the first uplink clock synchronization signal is a delay request message
  • the second uplink clock synchronization signal is a timing response message
  • the first downlink clock synchronization signal is a timing signal
  • the second downlink clock synchronization signal is a timing response message.
  • the fifth aspect provides a clock synchronization device, including: a transceiver, configured to send an uplink clock synchronization signal to a network device, and receive a downlink clock synchronization signal sent by the network device; and a processor, configured to record and send the uplink clock synchronization signal First time information, recording second time information of receiving the downlink clock synchronization signal, and calculating the network device and based on the first time information, the second time information, the third time information, and the fourth time information a clock offset of the terminal device; the downlink clock synchronization signal carries third time information that the network device receives the uplink clock synchronization signal and fourth time information that sends the downlink clock synchronization signal.
  • the downlink clock synchronization signal is a first downlink clock synchronization signal; when the transceiver receives the downlink clock synchronization signal sent by the network device, the transceiver is specifically configured to: receive the first a downlink clock synchronization signal; when the processor records the second time information of the downlink clock synchronization signal, the processor is specifically configured to: record second time information of the first downlink clock synchronization signal, where The third time information and the fourth time information are carried in a downlink clock synchronization signal.
  • the uplink clock synchronization signal is a delay request message, and the first downlink clock synchronization signal is a timing signal; or the uplink clock synchronization signal is a random access sequence, where the The downlink clock synchronization signal is a downlink reference signal; or the uplink clock synchronization signal is an uplink reference signal, and the first downlink clock synchronization signal is a downlink reference signal.
  • the downlink clock synchronization signal includes a first downlink clock synchronization signal and a second downlink clock synchronization signal; the second downlink clock synchronization signal carries the third time information and the fourth Time information
  • the transceiver When receiving the downlink clock synchronization signal sent by the network device, the transceiver is specifically configured to: receive a first downlink clock synchronization signal sent by the network device, and a second downlink clock synchronization signal; and the processor receives the The second time information of the downlink clock synchronization signal is specifically used to: record second time information of receiving the first downlink clock synchronization signal.
  • the uplink clock synchronization signal is a delay request message, the first downlink clock synchronization signal is a timing signal, and the second downlink clock synchronization signal is a delay response message; or
  • the uplink clock synchronization signal is a random access sequence, the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a random access response; or the uplink clock synchronization signal is an uplink reference
  • the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a delay response.
  • the sixth aspect provides a clock synchronization device, including: a transceiver, configured to receive an uplink clock synchronization signal sent by the terminal device, and send a downlink clock synchronization signal to the terminal device; and a processor, configured to record and receive the uplink clock synchronization signal
  • the third time information records the fourth time information of the downlink clock synchronization signal; the downlink clock synchronization signal carries the third time information and the fourth time information.
  • the downlink clock synchronization signal is a first downlink clock synchronization signal; when the transceiver sends a downlink clock synchronization signal to the terminal device, the transceiver is specifically configured to: send the first downlink clock a synchronization signal to the terminal device; the processor is configured to: record fourth time information of the first downlink clock synchronization signal, where the fourth time information of the downlink clock synchronization signal is recorded, The third information and the fourth information are carried in a downlink clock synchronization signal.
  • the uplink clock synchronization signal is a delay request message, and the first downlink clock synchronization signal is a timing signal; or the uplink clock synchronization signal is a random access sequence, where the The downlink clock synchronization signal is a downlink reference signal; or the uplink clock synchronization signal is an uplink reference signal, and the first downlink clock synchronization signal is a downlink reference signal.
  • the downlink clock synchronization signal includes a first downlink clock synchronization signal and a second downlink clock synchronization signal; when the transceiver sends a downlink clock synchronization signal to the terminal device, the transceiver is specifically configured to: send The first downlink clock synchronization signal is sent to the terminal device, and the second downlink clock synchronization signal is sent to the terminal device.
  • the processor records the fourth time information of the downlink clock synchronization signal
  • the processor is specifically configured to: record and send the The fourth time information of the first downlink clock synchronization signal; the second downlink clock synchronization signal carries the third time information and the fourth time information.
  • the uplink clock synchronization signal is a delay request message, the first downlink clock synchronization signal is a timing signal, and the second downlink clock synchronization signal is a delay response message; or
  • the uplink clock synchronization signal is a random access sequence, the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a random access response; or the uplink clock synchronization signal is an uplink reference
  • the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a delay response.
  • the seventh aspect provides a clock synchronization device, including: a transceiver, configured to send a first uplink clock synchronization signal to a network device, receive a first downlink clock synchronization signal sent by the network device, and send a second uplink clock synchronization signal to
  • the network device receives the second downlink clock synchronization signal sent by the network device
  • the processor is configured to record the first time information of sending the first uplink clock synchronization signal, and record the second signal that receives the first downlink clock synchronization signal Time information;
  • the second uplink clock synchronization signal carries the first time information and the second time information;
  • the second downlink clock synchronization signal carries clock deviation information, where the clock deviation information is the network
  • the device determines, according to the first time information, the second time information, the third time information, and the fourth time information, a clock deviation of the terminal device and the network device, where the third time information is that the network device receives the Time information of the first uplink clock synchronization signal, where the
  • the first uplink clock synchronization signal is a delay request message
  • the second uplink clock synchronization signal is a timing response message
  • the first downlink clock synchronization signal is a timing signal
  • the second downlink clock synchronization signal is a timing response message.
  • the eighth aspect provides a clock synchronization device, including: a transceiver, configured to receive a first uplink clock synchronization signal sent by the terminal device, send a first downlink clock synchronization signal, receive a second uplink clock synchronization signal, and send a second a downlink clock synchronization signal, wherein the second downlink clock synchronization signal carries the clock deviation information; the processor is configured to record third time information of the first uplink clock synchronization signal, and record and send the first Fourth time information of the line clock synchronization signal; calculating clock deviation information of the terminal and the network device based on the first time information, the second time information, the third time information, and the fourth time information; The clock synchronization signal carries first time information that the terminal device sends the first uplink clock synchronization signal and second time information that receives the first downlink clock synchronization signal.
  • a transceiver configured to receive a first uplink clock synchronization signal sent by the terminal device, send a first downlink clock synchronization signal, receive
  • the first uplink clock synchronization signal is a delay request message
  • the second uplink clock synchronization signal is a timing response message
  • the first downlink clock synchronization signal is a timing signal
  • the second downlink clock synchronization signal is a timing response message.
  • the present application further provides a computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the first aspect and the method of any of the possible aspects of the first aspect.
  • the present application further provides a computer readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of any of the second aspect and the second aspect.
  • the present application further provides a computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any of the third aspect and the third aspect.
  • the present application further provides a computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any of the fourth aspect and the fourth aspect.
  • the terminal device actively initiates a clock synchronization process, and the entire clock synchronization process only needs to transmit data twice in the air interface, which is required to be in the air interface compared with the clock synchronization process in the prior art. Transfer data four times, reducing air interface overhead.
  • FIG. 1 is a schematic diagram of clock synchronization provided by the present application.
  • FIG. 2 is a schematic diagram of a clock synchronization system provided by the present application.
  • FIG. 3 is a schematic diagram of clock synchronization provided by the present application.
  • FIG. 5 is a schematic diagram of clock synchronization provided by the present application.
  • FIG. 6a is a schematic diagram of clock synchronization provided by the present application.
  • FIG. 6b is a schematic diagram of clock synchronization provided by the present application.
  • FIG. 7 is a schematic diagram of clock synchronization provided by the present application.
  • FIG. 8 is a schematic diagram of clock synchronization provided by the present application.
  • FIG. 9 is a schematic diagram of clock synchronization provided by the present application.
  • FIG. 10a is a schematic diagram of clock synchronization provided by the present application.
  • FIG. 10b is a schematic diagram of clock synchronization provided by the present application.
  • FIG. 11 is a schematic diagram of clock synchronization provided by the present application.
  • FIG. 13 is a schematic structural diagram of a clock synchronization device provided by the present application.
  • a base station (BS) device also referred to as a base station, is a device deployed in a wireless access network to provide wireless communication functions.
  • a device that provides a base station function in a 2G network includes a base transceiver station (BTS) and a base station controller (BSC), and the device that provides the base station function in the 3G network includes a Node B (English NodeB) and A radio network controller (RNC), which provides a base station function in a 4G network, includes an evolved NodeB (eNB).
  • a device that provides a base station function is an access point.
  • AP access point.
  • devices providing base station functions include Node B (gNB), TRP (transmission and reception point), or TP (transmission point). point).
  • gNB Node B
  • TRP transmission and reception point
  • TP transmission point
  • the TRP or TP may not include the baseband portion, only the radio frequency portion, and may also include the baseband portion and the radio frequency portion.
  • a user equipment is a terminal device, which may be a mobile terminal device or a non-mobile terminal device.
  • the device is mainly used to receive or send business data.
  • User equipment can be distributed in the network.
  • User equipments have different names in different networks, such as: terminals, mobile stations, subscriber units, stations, cellular phones, personal digital assistants, wireless modems, wireless communication devices, handheld devices, knees.
  • the user equipment can communicate with one or more core networks via a radio access network (RAN) (access portion of the wireless communication network), such as exchanging voice and/or data with the radio access network.
  • RAN radio access network
  • a network device is a device located on the network side of the wireless communication network, and may be an access network element, such as a base station or a controller (if any), or may be a core network element or other network element. .
  • the present application is applied to a scenario in which a base station and a UE need clock synchronization in LTE (Long Term Evolution) or 5G (5th-Generation).
  • LTE Long Term Evolution
  • 5G 5th-Generation
  • FIG. 2 shows a possible system network diagram of the present application.
  • the clock synchronization system 00 includes at least a user equipment UE10 and a base station 11;
  • the base station 11 and the UE 10 need to perform clock synchronization, and the base station 11 serves as a master clock to provide clock information to the UE 10.
  • the UE 10 functions as a slave clock and maintains synchronization with the base station 11 clock based on the clock information.
  • the method or apparatus of the present application may be applied between a wireless network device and a user equipment, and may also be applied between a wireless network device and a wireless network device (such as a macro base station and a micro base station), and may also be applied to users.
  • a wireless network device and a wireless network device such as a macro base station and a micro base station
  • users may also be applied to users.
  • the wireless network device and the UE is taken as an example for description.
  • FIG. 3 is a flowchart of a clock synchronization method provided by the present application.
  • the network device in the flow corresponds to the base station 11 in FIG. 1, and the terminal device corresponds to the UE 10 in FIG.
  • the process may include:
  • Step S31 The terminal device sends an uplink clock synchronization signal to the network device, and records the first time information t0 for transmitting the uplink clock synchronization signal;
  • the terminal device may obtain the time-frequency resource for sending the uplink clock signal from the system message or the RRC signaling, such as a UE-specific physical channel or a shared physical channel.
  • Step S32 The network terminal device records the third time information t1 that receives the uplink clock synchronization signal, sends a downlink clock synchronization signal to the terminal device, and records the fourth time information t2 that sends the downlink clock synchronization signal; the downlink clock
  • the synchronization signal carries the third time information t1 and the fourth time information t2;
  • the downlink clock synchronization signal may be a broadcast signal, a multicast signal, or a unicast signal.
  • Step S33 The terminal device records the second time information t3 of the downlink clock synchronization signal, and the terminal device calculates the first time information t0, the second time information t3, the third time information t1, and the fourth time information t2.
  • the clock deviation of the network device and the terminal device is offset.
  • Step S34 The terminal device adjusts the clock of the terminal device according to the clock deviation offset.
  • the terminal device can adjust the clock of the terminal device to be consistent with the clock of the network device.
  • the terminal device actively initiates a clock synchronization process, and the entire clock synchronization process only needs to transmit data twice in the air interface, which is required to be in the air interface compared with the clock synchronization process in the prior art. Transfer data four times, reducing air interface overhead.
  • the downlink clock synchronization signal in the foregoing flowchart 3 may be specifically a first downlink clock synchronization signal, where the first downlink clock synchronization signal carries the third time information t1 and the fourth time. Information t2.
  • the uplink clock synchronization signal in the foregoing flowchart 3 may be a delay request message, and the first downlink clock synchronization signal may be a timing signal.
  • the delay request message may be Delay_Req, and the timing signal may be sync.
  • the clock synchronization method may be specifically applied to the 1588 protocol, which is a widely used clock synchronization protocol.
  • the terminal device sends a Delay_Req message to the network device, and records the time t0 of sending the Delay_Req message.
  • the network device records the time t1 when the Delay_Req message is received and the time t2 when the sync is sent, and sends a sync to the terminal device, where the sync carries t1 and t2.
  • the terminal device records the time t3 at which the sync is received, and calculates the clock offset offset of the network device and the terminal device according to t0, t1, t2, and t3. Adjust the clock of the terminal device to match the clock of the network device.
  • the uplink clock synchronization signal may be a random access sequence
  • the first downlink clock synchronization signal may be a downlink reference signal
  • the downlink reference signal may be a cell reference signal (Cell-specific RS, CRS) or demodulation reference signal (DeModulation RS, DMRS);
  • the clock synchronization method may be specifically applied to a random access process, as shown in FIG. 5, specifically: the terminal device sends a Preamble on a physical random access channel (PRACH), and records Sending the time information t0 of the Preamble; the network device records the time information t1 of the receiving Preamble, and simultaneously sends the CRS signal to the terminal device, and records the time t2 of transmitting the CRS; wherein the CRS carries t0 and t2, and the transmission time of the Preamble and the CRS is certain
  • the timing relationship for example, there is a timing relationship of N+K at the transmission moment of the Preamble and the CRS, the N refers to the moment when the Preamble is transmitted, and the N+K refers to the moment when the CRS is transmitted, and the K may be predefined by the protocol or a system message.
  • the terminal device receives the CRS signal according to the timing relationship of N+K, records the time t3 at which the CRS message is received, and calculates the clock offset offset of the network device and the terminal device according to t0, t1, t2, and t3. Adjust the clock of the terminal device to match the clock of the network device.
  • the CRS signal in the embodiment of the present application may also be replaced by a DMRS signal, and the processes are similar, and details are not described herein again.
  • the uplink clock synchronization signal may be, but not limited to, an uplink reference signal, and the uplink reference signal may be a sounding reference signal (SRS), a DMRS, a PT-RS (Phase Tracking Reference Signal), or a buffer status report.
  • SRS sounding reference signal
  • DMRS Downlink Reference Signal
  • PT-RS Phase Tracking Reference Signal
  • BRS Buffer Status Reports
  • the downlink reference signal may be, but not limited to, CRS, DMRS, SS Block (Synchronization Signal Block), PTRS, or Channel State Information RS (CSI-RS).
  • CSI-RS Channel State Information RS
  • the terminal device sends the SR to the network device, and records the time t0 of sending the SR; the network device records the time t1 and the time of receiving the SR.
  • the CRS is sent to the terminal device, where the CRS carries t1 and t2; the terminal device records the time t3 at which the CRS is received, and the terminal device calculates the clock offset of the terminal device and the network device according to t0, t1, t2, and t3. Offset. Adjust the clock of the terminal device to match the clock of the network device.
  • the specific process is as follows: the terminal device sends the BSR to the base station device, and records the time t0 of transmitting the BSR; the network device records the time t1 and the time of receiving the CRS.
  • the CRS is sent to the terminal device, where the CRS carries t1 and t2; the terminal device records the time t3 at which the CRS is received, and the terminal device calculates the clock offset of the terminal device and the network device according to t0, t1, t2, and t3. Offset. Adjust the clock of the terminal device to match the clock of the network device.
  • the terminal device and the network device only need to transmit the secondary signal in the air interface, respectively, the uplink clock synchronization signal and the first downlink clock synchronization signal, so that the clock synchronization of the terminal device and the network device can be realized.
  • the clock synchronization process in the prior art four times of signals need to be transmitted in the air interface, which can reduce the air interface overhead.
  • the downlink clock synchronization signal in the above flowchart 3 includes a first downlink clock synchronization signal and a second downlink clock synchronization signal.
  • the flow of the clock synchronization method provided by the present application is as shown in FIG. Can include:
  • Step S71 The terminal device sends an uplink clock synchronization signal to the network device, and records the first time information t0 of transmitting the uplink clock synchronization signal;
  • Step S72 The network terminal device records the third time information t1 for receiving the uplink clock synchronization signal, and sends a first downlink clock synchronization signal to the terminal device, where the network device records the fourth time information t2 for transmitting the first downlink clock synchronization signal.
  • the terminal device records the second time information t3 that receives the first downlink clock synchronization signal;
  • Step S73 The network device sends a second downlink clock synchronization signal to the terminal device, where the second downlink clock synchronization signal carries the third time information t1 and the fourth time information t2.
  • Step S74 The terminal device calculates a clock offset offset of the network device and the terminal device based on t0, t3, t1, and t2;
  • Step S75 The terminal device adjusts the clock of the terminal device according to the clock deviation offset.
  • the terminal device can adjust the clock of the terminal device to be consistent with the clock of the network device.
  • the terminal device and the network device only need to transmit the signal 3 times in the air interface, which are the uplink clock synchronization signal, the first downlink clock synchronization signal, and the second downlink clock synchronization signal, respectively, to implement the network device. Synchronizing with the clock of the terminal device; compared with the clock synchronization process in the prior art, the signal needs to be transmitted 4 times in the air interface, which can reduce the air interface overhead.
  • the uplink clock synchronization signal may be, but not limited to, a delay request message, and the first downlink clock synchronization signal may be, but not limited to, a timing signal, and the second downlink clock synchronization signal may be, but is not limited to, a delay.
  • the response message may be, but not limited to, Delay_Req, and the timing signal may be, but not limited to, sync, and the delay response message may be, but not limited to, Delay_Resp.
  • the clock synchronization method may be specifically applied to the 1588 protocol.
  • the terminal device sends a Delay_Req message to the network device, and records the time t0 at which the Delay_Req message is sent.
  • the network device records the time t1 when the Delay_Req message is received and the time t2 when the sync is sent, and sends a sync to the terminal device;
  • the terminal device records the time t3 when the sync is received;
  • the network device sends the Delay_Resp to the terminal device, where the Delay_Resp carries t1 and t2.
  • the terminal device receives the Delay_Resp, and calculates the clock offset offset of the network device and the terminal device according to t0, t1, t2, and t3, and adjusts the clock of the terminal device to be consistent with the clock of the network device.
  • the uplink clock synchronization signal may be, but is not limited to, a downlink reference signal, and the downlink reference signal may be, but not limited to, a CRS or a DMRS.
  • the second downlink clock synchronization signal may be, but is not limited to, a random access response.
  • the clock synchronization method may be specifically applied to a random access process, as shown in FIG. 9 , which may be specifically as follows:
  • the terminal device sends a Preamble on the PRACH, records the time information t0 of the Preamble, and the network device records the time information t1 of the Preamble, and simultaneously sends the CRS signal to the terminal device, and records the time t2 at which the CRS is transmitted; wherein the transmission time of the Preamble and the CRS exists.
  • a certain timing relationship for example, there is a timing relationship of N+K at the transmission moment of the Preamble and the CRS, the N refers to the moment when the Preamble is transmitted, and the N+K refers to the moment when the CRS is transmitted, and the K may be predefined by the protocol or the system.
  • the message indicates.
  • the terminal device receives the CRS signal according to the timing relationship of N+K, and records the time t3 at which the CRS message is received.
  • the network device schedules a random access response (RAR) on the PDCCH, where the PDCCH carries a time-frequency resource for transmitting the RAR.
  • the network device sends the RAR to the terminal device, where the RAR carries t1 and t2.
  • the terminal device receives the RAR, and calculates a clock offset offset of the network device and the terminal device according to t0, t1, t2, and t3, and adjusts the clock of the terminal device to be consistent with the clock of the network device.
  • the CRS signal in the embodiment of the present application may also be replaced by a DMRS signal, and the processes are similar, and details are not described herein again.
  • the terminal device and the network device can perform clock synchronization by using signals and messages in the existing random access process, without introducing a new process, thereby saving air interface overhead.
  • the uplink clock synchronization signal may be, but is not limited to, a downlink reference signal
  • the second downlink clock synchronization signal may be, but not limited to, a delay. response.
  • the uplink reference signal and the downlink reference signal refer to the description of the above example, and details are not described herein again.
  • the uplink reference signal is the SR
  • the first downlink reference signal is the CRS
  • the second downlink reference signal is the Delay Response.
  • the terminal device sends the SR to the network device, and records the time t0 of sending the SR
  • the network device records the time t1 of receiving the SR and the time t2 of sending the CRS, and sends the CRS to the terminal device
  • the terminal device records the time t3 of receiving the CRS
  • the network device sends a PDCCH for scheduling a Delay Response, where the PDCCH carries Downlink Control Information (DCI) for transmitting a Delay Response
  • the network device sends a Delay Response to the terminal device, where the Delay Response carries t1 and T2
  • the terminal device receives the PDCCH and receives the Delay Response message on the indicated time-frequency resource
  • the terminal device calculates the clock offset of the terminal
  • the above reference signal is a BSR
  • the first downlink reference signal is a CRS
  • the second downlink reference signal is a Delay Response.
  • the terminal device sends the BSR to the network device, and records the time t0 when the BSR is sent; the network device records the time t1 when the BSR is received and the time t2 when the CRS is sent, and sends the CRS to the terminal device; the terminal device records the time t3 when the CRS is received; a PDCCH that schedules a Delay Response, where the PDCCH carries Downlink Control Information (DCI) for transmitting a Delay Response; the network device sends a Delay Response to the terminal device, where the Delay Response carries t1 and t2; the terminal device Receiving a PDCCH and receiving a Delay Response message on the indicated time-frequency resource; finally, the terminal device calculates a clock offset offset of the terminal device and the network device according to t0, t1, t2, and t3, and adjusts the clock of the terminal device to The clocks of the network devices are consistent.
  • DCI Downlink Control Information
  • FIG. 10a and FIG. 10b can be replaced by DMRS, and the process is similar, and details are not described herein again.
  • the terminal device and the network device use the signals and messages in the existing SR/BSR reporting process to complete the clock synchronization, and no need to introduce a new process, thereby saving air interface overhead.
  • FIG. 11 is another flow of the clock synchronization method provided by the present application.
  • the network device in the flow corresponds to the base station 11 in FIG. 1
  • the terminal device corresponds to the UE 10 in FIG. 1 .
  • the process includes:
  • Step S111 The terminal device sends a first uplink clock synchronization signal to the network device, and records the first time information t0 of transmitting the first uplink clock synchronization signal;
  • Step S112 The network device records the third time information t1 of the first uplink clock synchronization signal, the first downlink clock synchronization signal, and records the fourth time information t2 of the first downlink clock synchronization signal.
  • Step S113 The terminal device records the second time information t3 of the first downlink clock synchronization signal, and sends the second uplink clock synchronization signal to the network device, where the second uplink clock synchronization signal carries the first time information t0. And second time information t3;
  • Step S114 The terminal device calculates a clock offset offset of the network device and the terminal device based on t0, t1, t2, and t3;
  • Step S115 The network device sends a second downlink clock synchronization signal, where the second downlink clock synchronization signal carries the clock offset information offset.
  • Step S116 The terminal device adjusts the clock of the terminal device according to the clock deviation offset.
  • the terminal device can adjust the clock of the terminal device to be consistent with the clock of the network device.
  • the clock synchronization method may be specifically applied to the 1588 protocol.
  • the first uplink clock synchronization signal is a delay request message Delay_req
  • the second uplink clock synchronization signal is a timing response message Sync-response
  • the first downlink The clock synchronization signal is a timing signal Sync
  • the second downlink clock synchronization signal is a delay response message Delay-response.
  • the method is specifically as follows: the terminal device sends a Delay_req to the network device, and the record sends the Delay_req.
  • the network device records the time t1 at which the Delay_req is received, sends the Sync to the terminal device, and records the time t2 at which the Sync is transmitted; the terminal device records the time t3 at which the Sync is received; the terminal device transmits the Sync-response to the network device, the Sync-response
  • the network device carries t0 and t3; the network device calculates a clock offset offset of the network device and the terminal device based on t0, t1, t2, and t3; the network device sends a Delay-response to the terminal device, where the Delay-response carries the offset information.
  • the clock of the terminal device is adjusted to be consistent with the clock of the network device.
  • the clock offset offset is specifically calculated by the network device, so that the processing procedure of the terminal device can be reduced, and the power consumption of the terminal device can be reduced.
  • the uplink clock synchronization signal is sent by the terminal device, and the clock synchronization process is triggered, and the clock synchronization is performed by the base station periodically broadcasting the downlink clock synchronization signal in the prior art.
  • the terminal that needs the clock synchronization can send the uplink clock synchronization signal to trigger the clock synchronization process, and the base station does not need to periodically broadcast the downlink clock synchronization signal, and the air interface overhead can be further saved.
  • a clock synchronization device 130 is provided.
  • the clock synchronization device 130 may correspond to the terminal device in the flowcharts 3 to 10b.
  • the clock synchronization device 130 may include:
  • the transceiver 131 is configured to send an uplink clock synchronization signal to the network device and receive a downlink clock synchronization signal sent by the network device.
  • the processor 132 is configured to record first time information for sending the uplink clock synchronization signal, record second time information for receiving the downlink clock synchronization signal, and based on the first time information, the second time information, and the third The time information and the fourth time information are used to calculate a clock offset of the network device and the terminal device; the downlink clock synchronization signal carries a third time information that the network device receives the uplink clock synchronization signal, and sends the downlink The fourth time information of the clock synchronization signal.
  • the downlink clock synchronization signal is a first downlink clock synchronization signal; when the transceiver receives the downlink clock synchronization signal sent by the network device, the transceiver is specifically configured to: receive, send by the network device
  • the first downlink clock synchronization signal is used by the processor to record the second time information of the first downlink clock synchronization signal when recording the second time information of the downlink clock synchronization signal.
  • the first downlink clock synchronization signal carries the third time information and the fourth time information.
  • the uplink clock synchronization signal is a delay request message, and the first downlink clock synchronization signal is a timing signal; or the uplink clock synchronization signal is a random access sequence, and the first downlink is The clock synchronization signal is a downlink reference signal; or the uplink clock synchronization signal is an uplink reference signal, and the first downlink clock synchronization signal is a downlink reference signal.
  • the downlink clock synchronization signal includes a first downlink clock synchronization signal and a second downlink clock synchronization signal, and the second downlink clock synchronization signal carries the third time information.
  • the fourth time information when receiving the downlink clock synchronization signal sent by the network device, the transceiver is specifically configured to: receive the first downlink clock synchronization signal sent by the network device, and the second downlink clock synchronization signal; When the second time information of the downlink clock synchronization signal is received, the device is specifically configured to record the second time information of the first downlink clock synchronization signal.
  • the uplink clock synchronization signal is a delay request message, the first downlink clock synchronization signal is a timing signal, and the second downlink clock synchronization signal is a delay response message; or the uplink clock
  • the synchronization signal is a random access sequence, the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a random access response; or the uplink clock synchronization signal is an uplink reference signal,
  • the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a delay response.
  • a clock synchronization device 130 is further provided, and the clock synchronization device 130 may correspond to the network device in FIG. 3 to FIG. 10b, including:
  • the transceiver 131 is configured to receive an uplink clock synchronization signal sent by the terminal device and send a downlink clock synchronization signal to the terminal device.
  • the processor 132 is configured to record third time information of the uplink clock synchronization signal, and record fourth time information of the downlink clock synchronization signal; the downlink clock synchronization signal carries the third time information and Fourth time information.
  • the downlink clock synchronization signal is a first downlink clock synchronization signal; when the transceiver sends a downlink clock synchronization signal to the terminal device, the transceiver is specifically configured to: send the first downlink a clock synchronization signal to the terminal device; when the processor records the fourth time information of the downlink clock synchronization signal, the processor is specifically configured to: record the fourth time information of the first downlink clock synchronization signal, The third downlink information and the fourth information are carried in the first downlink clock synchronization signal.
  • the uplink clock synchronization signal is a delay request message, and the first downlink clock synchronization signal is a timing signal; or the uplink clock synchronization signal is a random access sequence, and the first downlink is The clock synchronization signal is a downlink reference signal; or the uplink clock synchronization signal is an uplink reference signal, and the first downlink clock synchronization signal is a downlink reference signal.
  • the downlink clock synchronization signal includes a first downlink clock synchronization signal and a second downlink clock synchronization signal; when the transceiver sends a downlink clock synchronization signal to the terminal device, specifically, the transceiver is specifically used to: Transmitting a first downlink clock synchronization signal to the terminal device, and transmitting a second downlink clock synchronization signal to the terminal device; when the processor records the fourth time information of the downlink clock synchronization signal, the processor is specifically configured to: record and send The fourth time information of the first downlink clock synchronization signal; the second downlink clock synchronization signal carries the third time information and the fourth time information.
  • the uplink clock synchronization signal is a delay request message, the first downlink clock synchronization signal is a timing signal, and the second downlink clock synchronization signal is a delay response message; or the uplink clock
  • the synchronization signal is a random access sequence, the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a random access response; or the uplink clock synchronization signal is an uplink reference signal,
  • the first downlink clock synchronization signal is a downlink reference signal, and the second downlink clock synchronization signal is a delay response.
  • a clock synchronization device 130 is also provided.
  • the clock synchronization device 130 can correspond to the terminal device in FIG. 11 or FIG. 12, and includes:
  • the transceiver 131 is configured to send the first uplink clock synchronization signal to the network device, receive the first downlink clock synchronization signal sent by the network device, send the second uplink clock synchronization signal to the network device, and receive the second downlink clock sent by the network device. Synchronization signal
  • the processor 132 is configured to record first time information of the first uplink clock synchronization signal, and record second time information of the first downlink clock synchronization signal; the second uplink clock synchronization signal carries The first time information and the second time information; the second downlink clock synchronization signal carries clock deviation information, where the clock deviation information is that the network device is based on the first time information, the second time information, The third time information and the fourth time information, the determined clock offset of the terminal device and the network device, where the third time information is time information of the network device receiving the first uplink clock synchronization signal, the fourth The time information is time information for sending, by the network device, the first downlink clock synchronization signal.
  • the first uplink clock synchronization signal is a delay request message
  • the second uplink clock synchronization signal is a timing response message
  • the first downlink clock synchronization signal is a timing signal
  • the second downlink is The clock synchronization signal is a timing response message.
  • a clock synchronization device 130 is also provided.
  • the clock synchronization device 130 may correspond to the network device in FIG. 11 or FIG. 12, and includes:
  • the transceiver 131 is configured to receive a first uplink clock synchronization signal sent by the terminal device, send a first downlink clock synchronization signal, receive a second uplink clock synchronization signal, and send a second downlink clock synchronization signal, where the second downlink clock synchronization
  • the signal carries the clock deviation information
  • the processor 132 is configured to record third time information for receiving the first uplink clock synchronization signal, and record fourth time information for transmitting the first downlink clock synchronization signal; based on the first time information and the second time The information, the third time information, and the fourth time information, the clock deviation information of the terminal and the network device is calculated; the second uplink clock synchronization signal carries the first time that the terminal device sends the first uplink clock synchronization signal Information and second time information for receiving the first downlink clock synchronization signal.
  • the first uplink clock synchronization signal is a delay request message
  • the second uplink clock synchronization signal is a timing response message
  • the first downlink clock synchronization signal is a timing signal
  • the second downlink is The clock synchronization signal is a timing response message.
  • the present application also provides a computer readable storage medium comprising instructions for causing a computer to execute a method of a terminal device in the clock synchronization method described above when it is run on a computer.
  • the present application also provides a computer readable storage medium comprising instructions for causing a computer to execute a method of a network side device in the above clock synchronization method when it is run on a computer.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

La présente invention concerne un procédé et dispositif de synchronisation d'horloges, le procédé comportant les étapes suivantes: un dispositif terminal envoie un signal de synchronisation d'horloge de liaison montante à un dispositif de réseau, et enregistrer des premières informations temporelles dudit envoi du signal de synchronisation d'horloge de liaison montante; le dispositif terminal reçoit un signal de synchronisation d'horloge de liaison descendante émis par le dispositif de réseau et enregistrer des deuxièmes informations temporelles pour ladite réception du signal de synchronisation d'horloge de liaison descendante, le signal de synchronisation d'horloge de liaison descendante transportant des troisièmes informations temporelles pour la réception du signal de synchronisation d'horloge de liaison montante et des quatrièmes informations temporelles pour l'émission du signal de synchronisation d'horloge de liaison descendante par le dispositif de réseau; le dispositif terminal calcule un écart d'horloge entre le dispositif de réseau et le dispositif terminal sur la base des premières informations temporelles, des deuxièmes informations temporelles, des troisièmes informations temporelles et des quatrièmes informations temporelles. Le procédé et le dispositif utilisés dans la présente invention peuvent réduire la surcharge d'une interface radio.
PCT/CN2018/089374 2017-06-02 2018-05-31 Procédé et dispositif de synchronisation d'horloges WO2018219334A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111328134A (zh) * 2018-12-14 2020-06-23 深圳市中兴微电子技术有限公司 同步方法及装置、网元、计算机存储介质
CN111385051A (zh) * 2018-12-29 2020-07-07 华为技术有限公司 时钟同步方法、装置和存储介质

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110971326B (zh) * 2018-09-28 2021-07-16 华为技术有限公司 一种时间同步的方法和装置
CN111432465B (zh) * 2019-01-09 2021-06-22 华为技术有限公司 一种同步方法及装置
CN111641937B (zh) * 2019-03-01 2023-07-11 阿里巴巴集团控股有限公司 通信系统及第一节点、网关、网络服务器及时间同步方法
CN111867040B (zh) * 2019-04-30 2021-12-28 华为技术有限公司 一种通信方法、终端设备以及网络设备
CN114079525A (zh) * 2020-08-19 2022-02-22 华为技术有限公司 时钟同步方法和装置
CN113890664B (zh) * 2021-09-24 2024-01-30 锐盟(深圳)医疗科技有限公司 体域网内数据同步方法、检测终端及计算机可读存储介质
CN116847449A (zh) * 2022-03-25 2023-10-03 华为技术有限公司 一种授时方法、通信装置及通信系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1885987A (zh) * 2005-06-22 2006-12-27 上海华为技术有限公司 一种监测无线网络控制器和基站间时钟稳定性的方法
CN101783779A (zh) * 2009-01-16 2010-07-21 华为技术有限公司 一种xDSL时间同步方法、装置和系统
US20100195627A1 (en) * 2009-02-02 2010-08-05 Qualcomm Incorporated Reuse of rf receive chain for hand-in assistance
CN102394741A (zh) * 2011-12-13 2012-03-28 杭州华三通信技术有限公司 基于ieee1588实现精确时间同步的方法和装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080114102A (ko) * 2007-06-26 2008-12-31 삼성전자주식회사 통신 시스템에서 기지국 동기 획득 시스템 및 방법
CN102244925B (zh) * 2010-05-14 2014-05-07 华为技术有限公司 时钟同步方法、用户端设备和时钟同步系统
CN102932083B (zh) * 2011-08-11 2016-12-07 中兴通讯股份有限公司 一种微波同步对时的方法和装置
WO2013173965A1 (fr) * 2012-05-21 2013-11-28 华为技术有限公司 Procédé de détection de signal de liaison montante et dispositif et système associés

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1885987A (zh) * 2005-06-22 2006-12-27 上海华为技术有限公司 一种监测无线网络控制器和基站间时钟稳定性的方法
CN101783779A (zh) * 2009-01-16 2010-07-21 华为技术有限公司 一种xDSL时间同步方法、装置和系统
US20100195627A1 (en) * 2009-02-02 2010-08-05 Qualcomm Incorporated Reuse of rf receive chain for hand-in assistance
CN102394741A (zh) * 2011-12-13 2012-03-28 杭州华三通信技术有限公司 基于ieee1588实现精确时间同步的方法和装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111328134A (zh) * 2018-12-14 2020-06-23 深圳市中兴微电子技术有限公司 同步方法及装置、网元、计算机存储介质
CN111328134B (zh) * 2018-12-14 2022-08-09 深圳市中兴微电子技术有限公司 同步方法及装置、网元、计算机存储介质
US12004100B2 (en) 2018-12-14 2024-06-04 Sanechips Technology Co., Ltd. Synchronization method and apparatus, network element, and computer storage medium
CN111385051A (zh) * 2018-12-29 2020-07-07 华为技术有限公司 时钟同步方法、装置和存储介质
CN111385051B (zh) * 2018-12-29 2022-11-08 华为技术有限公司 时钟同步方法、装置和存储介质

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