WO2018192527A1 - Procédé et dispositif de synchronisation temporelle - Google Patents

Procédé et dispositif de synchronisation temporelle Download PDF

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Publication number
WO2018192527A1
WO2018192527A1 PCT/CN2018/083564 CN2018083564W WO2018192527A1 WO 2018192527 A1 WO2018192527 A1 WO 2018192527A1 CN 2018083564 W CN2018083564 W CN 2018083564W WO 2018192527 A1 WO2018192527 A1 WO 2018192527A1
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WO
WIPO (PCT)
Prior art keywords
time synchronization
terminal device
base station
synchronization information
core network
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PCT/CN2018/083564
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English (en)
Chinese (zh)
Inventor
于峰
蔺波
黄正磊
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华为技术有限公司
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Publication of WO2018192527A1 publication Critical patent/WO2018192527A1/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
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • 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
    • 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

Definitions

  • the present application relates to the field of mobile communications, and in particular, to a time synchronization method and apparatus.
  • the robots 1, 2, and 3 cooperate to complete an assembly task.
  • the robot 1 is responsible for supporting one side of the part
  • the robot 2 is responsible for supporting the other side of the part
  • the robot 3 is responsible for mounting the nut to the part.
  • the robot 3 needs to install the nut at 1:0 pm, assuming that the support process and the installation process take 4 s.
  • robots 1 and 2 must support the parts at the same time to ensure the balance of the parts. Any one of the robots moves forward or backward, which will cause the parts to fail.
  • robots 1 and 2 also need to be 1 point, 10s, 10s, the whole part is put down; the robot 3 needs to install the nut at 1 o'clock and 5s in time. If the action is advanced, the part is not in place. If the hysteresis is actuated, the nut will be put down after it has not been installed.
  • the indoor GPS signal is poor, and the synchronization between the robots generally depends on the interaction with the clock server to perform time information interaction with each other. All the robots are synchronized with a certain clock server to reach between the robots. Synchronize with each other.
  • the synchronous information transmission between the robot and the clock server is wired, for example, an Ethernet cable is used for communication, but the wired deployment method has the following disadvantages: 1) The wired network construction and deployment are complicated. Later maintenance is also more difficult; 2) The mobility of industrial robots is greatly limited by the connection of cables, and the range of movement is small.
  • the present application describes a time synchronization method and apparatus.
  • the embodiment of the present application provides a time synchronization method, where the method includes: determining, by a base station, a transmission period of a time synchronization signal for the at least one terminal device according to time synchronization information of at least one terminal device; The base station notifies the at least one terminal device of a transmission period of the time synchronization signal; the base station transmits a time synchronization signal to the at least one terminal device according to a transmission period of the time synchronization signal.
  • the time synchronization information includes at least one of: a delay jitter of a service supported by the at least one terminal device, a time synchronization accuracy of a service supported by the at least one terminal device, Time synchronization capability of the at least one terminal device.
  • the base station determines, according to the time synchronization information of the at least one terminal device, a transmission period of the time synchronization signal for the at least one terminal device, including: the base station according to the time synchronization information
  • the first time synchronization information is used to determine a transmission period of the time synchronization signal
  • the first time synchronization information is time synchronization information of a transmission period corresponding to the shortest time synchronization signal in the time synchronization information.
  • At least one of the time synchronization information is that the base station is from one or more of the at least one terminal device, a core network, and another base station. At least one received.
  • the time synchronization information in a case where at least one of the time synchronization information is that the base station receives from the core network, the time synchronization information is an initial context setup request message or an evolution. Carrying by the radio access bearer setup request message; and/or in the case where at least one of the time synchronization information is received by the base station from the one or more terminal devices, the time synchronization information is The capability information of the one or more terminal devices is carried.
  • the embodiment of the present application provides a time synchronization method, where the method includes: the core network sends time synchronization information of the terminal device to the base station, where the time synchronization information includes at least one of the following: the at least one terminal device supports Delay jitter of the service, time synchronization accuracy of the service supported by the at least one terminal device, and time synchronization capability of the at least one terminal device.
  • At least one of the time synchronization information is obtained by the core network by using a service QoS of an upper layer interface; and/or at least one of the time synchronization information is the The core network is received from at least one of the terminal device, another core network, and another base station.
  • the method further includes: sending, by the core network, at least one of the time synchronization information to another core network and/or a base station.
  • the embodiment of the present application provides another time synchronization device, which may be a base station or a chip in a base station.
  • the apparatus can include a processing unit and a transceiver unit.
  • the processing unit may be a processor
  • the transceiver unit may be a transceiver
  • the base station may further include a storage unit, the storage unit may be a memory; the storage unit is configured to store
  • the processing unit executes the instructions stored by the storage unit to cause the base station to perform the method of any one of the possible implementations of the first aspect or the first aspect.
  • the processing unit may be a processor, the transceiver unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes an instruction stored by the storage unit to The method of any one of the possible implementations of the first aspect or the first aspect, wherein the storage unit may be a storage unit (eg, a register, a cache, etc.) in the chip, or may be a A memory unit (eg, a read only memory, a random access memory, etc.) located outside the chip within the base station.
  • the storage unit may be a storage unit (eg, a register, a cache, etc.) in the chip, or may be a A memory unit (eg, a read only memory, a random access memory, etc.) located outside the chip within the base station.
  • the embodiment of the present application provides another time synchronization device, which may be a core network or a chip in a core network.
  • the apparatus can include a processing unit and a transceiver unit.
  • the processing unit may be a processor, the transceiver unit may be a transceiver;
  • the core network may further include a storage unit, the storage unit may be a memory;
  • the processing unit executes the instructions stored by the storage unit to cause the core network to perform the method in any one of the possible implementations of the second aspect or the second aspect.
  • the processing unit may be a processor, the transceiver unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes an instruction stored by the storage unit,
  • the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or may be a method in any one of the possible implementation manners of the second aspect or the second aspect.
  • a memory unit eg, a read only memory, a random access memory, etc. located outside the chip within the core network.
  • an embodiment of the present application provides a communication system, where the communication system includes the base station in the third aspect and the core network in the fourth aspect.
  • the embodiment of the present application provides a computer readable storage medium, configured to store a computer program, where the computer program is used to execute the first aspect, the second aspect, any possible implementation manner of the first aspect, or the second An instruction of a method in any of the possible implementations.
  • the base station can dynamically adjust the transmission period of the time synchronization signal according to the current time synchronization requirement of the terminal device connected thereto, thereby achieving a balance between ensuring time synchronization requirements and ensuring resource efficiency.
  • FIG. 1 is a schematic diagram of a communication flow of an IEEE 1588 protocol
  • FIG. 2 is a schematic diagram of a network architecture applied in an embodiment of the present application.
  • FIG. 3 is a flow chart of one embodiment of a time synchronization method provided by the present application.
  • FIG. 4 is a structural diagram of an embodiment of a base station provided by the present application.
  • FIG. 5 is a structural diagram of another embodiment of a base station provided by the present application.
  • FIG. 6 is a structural diagram of an embodiment of a core network provided by the present application.
  • FIG. 7 is a structural diagram of another embodiment of a core network provided by the present application.
  • FIG. 2 shows a communication system 100 to which the embodiment of the present application is applied.
  • Communication system 100 can include at least one base station 110, at least one core network 120, and a plurality of terminal devices 130 located within the coverage of base station 110.
  • FIG. 2 exemplarily shows one base station, one core network, and two terminal devices.
  • the communication system 100 may include multiple base stations, or may include multiple core networks, and each base station may have coverage within This embodiment does not limit the number of the terminal devices.
  • the wireless communication system 100 may further include other network entities, and the embodiment of the present application is not limited thereto.
  • the communication system used in the embodiments of the present application may be a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, or a Wideband Code Division Multiple Access (Wideband Code Division Multiple Access).
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • Wideband Code Division Multiple Access Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division duplex
  • UMTS Universal Mobile Telecommunication System
  • NR 5G New Radio
  • OFDM Orthogonal Frequency-Division Multiplexing
  • the base station involved in the embodiment of the present application can be used to provide a wireless communication function for the terminal device.
  • the base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like.
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB, NB) in WCDMA, or may be an evolved Node B (eNB) in LTE or e-NodeB), and may be the corresponding device gNB in the 5G network.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • eNB evolved Node B
  • LTE Long Term Evolution
  • e-NodeB evolved Node B
  • the foregoing apparatus for providing a wireless communication function for a terminal device is collectively referred to as a base station.
  • the core network involved in the embodiment of the present application corresponds to different devices in different systems, for example, a Mobile Management Entity (MME) or a Serving GateWay (S-GW) in a 4G system, in 3G.
  • MME Mobile Management Entity
  • S-GW Serving GateWay
  • SGSN Service GPRS support node
  • GGSN Gateway GPRS Support Node
  • the terminal device involved in the embodiment of the present application may also be referred to as a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal device (Mobile Terminal), etc., and the terminal device may be connected via a wireless device.
  • the Radio Access Network (RAN) communicates with one or more core networks.
  • the terminal device may be a mobile phone (or "cellular" phone), a computer with a mobile terminal device, etc., for example, the terminal device also It can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with the wireless access network.
  • the embodiment of the present application does not specifically limit it.
  • the network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation of the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.
  • IEEE 1588 is a precision time synchronization protocol standard for network measurement and control systems.
  • the basic principle of the IEEE 1588 protocol is to calculate the clock offset (Offset) by interacting with the time information of the Master Clock and the Slave Clock.
  • the true transmission time is the time interval from the time when the sender records the timestamp to the time at which the receiver records the timestamp. This includes not only the transmission time in the network, but also the time when the sender is time stamped. The processing time until the signal actually enters the network, and the processing time at which the receiver receives the signal and times it.
  • the time synchronization accuracy is related to the symmetry of the uplink and downlink transmission time, and is also related to the execution frequency of the synchronization process.
  • the master clock sends a SYNC message and records the sending time t0 of the message, and the message may not carry any information;
  • the controlled clock receives the SYNC message sent by the master clock, and records the receiving time t1;
  • the master clock sends a Follow_up message to the controlled clock, which carries t0;
  • the controlled clock receives the Follow_up message sent by the master clock, and obtains t0;
  • the controlled clock sends a Delay_Req message to the master clock and records the transmission time t2, which may not carry any information;
  • the master clock receives the Delay_Req message of the controlled clock, and records the receiving time t3;
  • the master clock sends a Delay_Resp message to the controlled clock, which carries the information of t3;
  • the controlled clock receives the Delay_Resp message of the master clock, obtains t3, calculates the offset of the clock according to t0, t1, t2, and t3, and adjusts the local clock accordingly.
  • the basic principle is that the controlled clock adjusts its own clock by interacting with the time information of the master clock, since in the cellular system, all terminal devices are connected to the base station.
  • the base station allocates communication resources and configures some parameters), so in the time synchronization process of the cellular system, we use the base station as the master clock, and the terminal device As a controlled clock.
  • the master clock periodically transmits a SYNC message and the transmission period is fixed. If the SYNC message is sent in a fixed period on the air interface transmission of the cellular radio system, in the case where there is no service or terminal device requiring time synchronization in the system. Or, when the accuracy of the synchronization service at the current time is not high, and the terminal device can receive the SYNC message according to a long period, the air interface resource is wasted.
  • the base station needs to be dynamically adapted to the time synchronization requirement of the air interface, and the air interface signaling overhead is saved under the premise of ensuring time synchronization accuracy.
  • an embodiment of a time synchronization method provided by the present application may be applied to a scenario in which a time synchronization signal is transmitted between a base station and a terminal device by using a wireless signal, and the method includes S210, S220, and S230.
  • the base station determines, according to time synchronization information of the at least one terminal device, a transmission period of a time synchronization signal for the at least one terminal device.
  • the at least one terminal device may be all terminal devices with time synchronization requirements connected to the base station, or the base station may also group terminal devices with time synchronization requirements connected to the base station.
  • the transmission period of the different time synchronization signals is determined for each packet, and the time synchronization signal is transmitted according to the determined transmission period of the different time synchronization signals, which is not limited in this application.
  • the time synchronization signal for the at least one terminal device refers to a time synchronization signal that the base station then transmits to the at least one terminal device.
  • the time synchronization signal is a signal used for time synchronization between the base station and the terminal device, and the time synchronization signal may not include any information, and is only used for timestamps of the transmitting end and the receiving end (
  • the record of the time stamp may also include the transmission time information (for example, the time corresponding to a certain symbol of the current signal), which is not limited in this application.
  • time synchronization means that the absolute time between points is required to be the same or the deviation does not exceed a certain value.
  • Time synchronization can also be called clock synchronization, that is, the time of multiple clocks at a certain time is completely consistent or time deviation. Not exceeding a certain value, it can be understood as clock synchronization.
  • the clock at the terminal device is completely coincident with the clock at the base station at a certain time or the time deviation does not exceed a certain value.
  • the time synchronization signal is a signal or message used to record time stamps.
  • the base station records a timestamp of the time of sending the time synchronization signal, and includes the timestamp in the time synchronization signal, and the receiving end records the timestamp of the time of receiving the time synchronization signal.
  • the timestamp refers to the time corresponding to a certain signal when a certain action occurs (for example, sending or receiving a certain symbol), and is used as an input of the time synchronization algorithm to calculate the time deviation.
  • the base station when a new terminal device is connected to the base station, or when some or some of the terminal devices connected to the base station generate time synchronization requirements, or when connected to the base station The base station re-determines the transmission period of the time synchronization signal when the time synchronization information of one or some of the terminal devices in the time synchronization requirement changes.
  • the transmission period of the time synchronization signal may be represented by an integer multiple of a Transmission Time Interval (TTI), an integer multiple of a subframe, or an integer multiple of a time slot.
  • TTI Transmission Time Interval
  • subframe an integer multiple of a subframe
  • time slot an integer multiple of a time slot
  • the time synchronization information includes at least one of: a delay jitter of a service supported by the at least one terminal device, a time synchronization accuracy of the service supported by the at least one terminal device, and a time of the at least one terminal device Synchronization capability.
  • the at least one terminal device can support the same service, and can also support different services, which is not limited in this application.
  • the at least one terminal device includes a first terminal device, a second terminal device, and a third terminal device, where the first terminal device and the second terminal device support a first service, and the third terminal device supports The second service
  • the time synchronization information includes at least one of: delay jitter and/or time synchronization accuracy of the first service, delay jitter of the second service, and/or time synchronization accuracy, time synchronization of the first terminal device The capability, the time synchronization capability of the second terminal device, and the time synchronization capability of the third terminal device.
  • the delay jitter of the service supported by the at least one terminal device refers to a variation of the end-to-end Latency of all terminal devices supporting the service, which may Is the range of variation of any one message from one or more transmitting sides to one or more receiving sides, for example, sending N messages from one node to another (N can be infinite), each message has A transmission delay, the deviation of the transmission delay of all messages does not exceed one value, this value is delay jitter; for example, L messages are sent from K nodes to another K nodes (K can be infinite, L can also Infinitely large, the deviation of the transmission delay of each message does not exceed one value. This value is the delay jitter.
  • the time synchronization accuracy of the service supported by the at least one terminal device refers to the maximum value of the deviation of the local time (or local clock) of all the terminal devices supporting the service, and the smaller the value, the higher the time synchronization accuracy.
  • the time synchronization capability of the at least one terminal device refers to a minimum value of time deviation between the terminal device and the master clock located at the base station, and the smaller the value, the stronger the time synchronization capability. .
  • the shorter the delay jitter the shorter the transmission period of the time synchronization signal; and/or the higher the time synchronization precision, the shorter the transmission period of the time synchronization signal; and/or the The weaker the time synchronization capability, the shorter the transmission period of the time synchronization signal.
  • the base station notifies the at least one terminal device of a sending period of the time synchronization signal.
  • the base station may send the value of the transmission period of the time synchronization signal to the at least one terminal device, or may send the index number of the transmission period of the time synchronization signal to the at least one terminal device, which is This is not limited.
  • the base station may broadcast a transmission period of the time synchronization signal through a system message.
  • the base station sends a time synchronization signal to the at least one terminal device according to a sending period of the time synchronization signal.
  • the base station stops transmitting the time synchronization signal.
  • the base station does not need to determine the transmission period of the time synchronization signal and does not need to transmit the time synchronization signal.
  • the steps between the foregoing base station and the terminal device are all using a wireless signal as a transmission mode.
  • the base station dynamically adjusts the transmission period of the time synchronization signal according to the time synchronization information of the at least one terminal device.
  • the time synchronization signal transmission period can be The current time synchronization requirement of the at least one terminal device is met, and the transmission period of the time synchronization signal is prevented from being too long for a certain terminal device, so that the controlled clock in the terminal device is not synchronized with the master clock located at the base station.
  • the SeNB determines, according to the first time synchronization information in the time synchronization information, a sending period of the time synchronization signal, where the first time synchronization information is the shortest corresponding to the time synchronization information.
  • Time synchronization information of the transmission cycle of the time synchronization signal is the first time synchronization information in the time synchronization information.
  • the transmission period of the time synchronization signal should satisfy the time synchronization requirement of all services supported by the at least one terminal device (ie, satisfy the most strict time synchronization requirement among them).
  • the base station should adjust the transmission period of the time synchronization signal.
  • the base station may determine a transmission period of the time synchronization signal according to a minimum delay jitter; in a case where the time synchronization information is time synchronization accuracy The base station may determine a transmission period of the time synchronization signal according to a highest time synchronization precision; in a case where the time synchronization information is a time synchronization capability, the base station may select a weakest time synchronization capability to determine The transmission period of the time synchronization signal.
  • the embodiment further includes S240.
  • S240 The one or more terminal devices of the at least one terminal device send at least one of the time synchronization information to a core network.
  • the one or more terminal devices may transmit at least one of the time synchronization information to the core network, for example, a time synchronization capability of the one or more terminal devices, or may
  • the core network sends different types of time synchronization information related to different terminal devices, for example, the first terminal device sends the time synchronization capability of the first terminal device to the core network, and the second terminal device sends the time synchronization capability to the core network.
  • the time synchronization capability of the second terminal device and the delay jitter of the service supported by the second terminal device are not limited in this application.
  • the time synchronization message is carried by UE Capability Information.
  • the sending, by the one or more terminal devices, the time synchronization information to the core network requires forwarding by the base station, for example, the base station receives capability information of the first terminal device from a first terminal device. And not extracting the time synchronization message of the first terminal device, but forwarding the time synchronization message of the first terminal device to the core network, and extracting the time synchronization message by the core network .
  • the embodiment further includes S250.
  • the base station receives at least one of the time synchronization information from the core network.
  • the base station may receive at least one of the time synchronization information from the core network, and may also receive different types of time synchronization information related to different terminal devices from the core network. This application does not limit this.
  • the time synchronization information is carried by an Initial Context Setup Request message or an Evolved Radio Access Bearer Setup Request message.
  • the embodiment further includes S260.
  • the one or more terminal devices of the at least one terminal device send at least one of the time synchronization information to the base station.
  • the terminal device may send at least one of the time synchronization information to the base station, and may also send different types of time synchronization information related to different terminal devices to the base station, This application does not limit this.
  • the time synchronization information is carried by capability information.
  • the at least one terminal device should inform its core network of its time synchronization capability, and then the base station notifies the base station that the time synchronization capability of a certain terminal device is not notified in the core network.
  • the base station queries the terminal device for its time synchronization capability or an unknown partial time synchronization capability, and the terminal device The time synchronization capability or the partial time synchronization capability being queried is informed to the base station.
  • the first terminal device passes the base station. Transmitting, to the core network, capability information including its time synchronization capability, the core network acquiring the time synchronization capability of the first terminal device from the obtained capability report message and passing the core network and the An interface between the base stations is notified to the base station; the time synchronization capability of the second terminal device is stored in the core network, and therefore, the core network can pass the time synchronization capability of the second terminal device that is stored by the core network.
  • the interface between the core network and the base station is notified to the base station; the core network does not acquire the time synchronization capability of the third terminal device from the third terminal device, and does not store the third The time synchronization capability of the terminal device, thus not notifying the base station of the time synchronization capability of the third terminal device, in which case the base Can query message to the third terminal device transmits time synchronization capability, the third terminal equipment to report its capability information comprising time synchronization capability to the base station.
  • the time synchronization capability of the at least one terminal device is learned by the core network through the upper layer interface (for example, through the service QoS of the upper layer interface), and is notified to the base station, where the terminal device is not used.
  • the time synchronization capability informs the base station or does not inform the base station of the partial time synchronization capability of a certain terminal device
  • the base station queries the core network for the time synchronization capability or the unknown portion of the terminal device. Time synchronization capability.
  • the time synchronization information is a delay jitter and/or a time synchronization accuracy of a service supported by the terminal device
  • the at least one terminal device includes a first terminal device, a second terminal device, and the first terminal device and The second terminal device supports the first service
  • the core network obtains the delay jitter and/or the time synchronization precision of the first service by using the service QoS of the upper layer interface, and delays the first service.
  • Jitter and/or time synchronization accuracy is sent to the base station.
  • the base station receives at least one of the time synchronization information from another base station.
  • the base station may receive at least one of the time synchronization information from the another base station, and may also receive different types of time related to different terminal devices from the another base station. Synchronization information is not limited in this application.
  • the core network obtains at least one of the time synchronization information by using a service QoS of an upper layer interface.
  • the core network receives at least one of the time synchronization information from another core network and/or another base station.
  • the core network may receive at least one of the time synchronization information from the another core network and/or the another base station, or may also be from the other core network and
  • the other base station receives different types of time synchronization information related to different terminal devices, which is not limited in this application.
  • the core network sends at least one of the time synchronization information to another core network.
  • the core network may send at least one of the time synchronization information to the other core network, or may send a different connection to a different terminal device to the other core network.
  • Type time synchronization information which is not limited in this application.
  • an embodiment of a base station provided by the present application includes a sending unit 310 and a processing unit 330.
  • the processing unit 330 is configured to: determine, according to time synchronization information of the at least one terminal device, a transmission period of a time synchronization signal for the at least one terminal device.
  • the time synchronization information includes at least one of: a delay jitter of a service supported by the at least one terminal device, a time synchronization accuracy of the service supported by the at least one terminal device, and a time of the at least one terminal device Synchronization capability.
  • the shorter the delay jitter the shorter the transmission period of the time synchronization signal; and/or the higher the time synchronization precision, the shorter the transmission period of the time synchronization signal; and/or the The weaker the time synchronization capability, the shorter the transmission period of the time synchronization signal.
  • the sending unit 310 is configured to: send a sending period of the time synchronization signal to the at least one terminal device.
  • the sending unit 310 is further configured to: send a time synchronization signal to the at least one terminal device according to a sending period of the time synchronization signal.
  • the processing unit 330 is further configured to: determine, according to the first time synchronization information in the time synchronization information, a sending period of the time synchronization signal, where the first time synchronization information is the time synchronization information. Time synchronization information corresponding to the transmission period of the shortest time synchronization signal.
  • the embodiment further includes a receiving unit 320.
  • the receiving unit 320 is configured to: receive at least one of the time synchronization information from at least one of the one or more terminal devices, the core network, and another base station of the at least one terminal device.
  • the time synchronization information is an initial context setup request message or an evolved radio access bearer setup request message.
  • the time synchronization information is by the one or more terminals The capability information of the device is carried.
  • another embodiment of a base station provided by the present application includes a transmitter 410 and a processor 430.
  • the processor 430 is configured to: determine, according to time synchronization information of the at least one terminal device, a transmission period of a time synchronization signal for the at least one terminal device.
  • the time synchronization information includes at least one of: a delay jitter of a service supported by the at least one terminal device, a time synchronization accuracy of the service supported by the at least one terminal device, and a time of the at least one terminal device Synchronization capability.
  • the shorter the delay jitter the shorter the transmission period of the time synchronization signal; and/or the higher the time synchronization precision, the shorter the transmission period of the time synchronization signal; and/or the The weaker the time synchronization capability, the shorter the transmission period of the time synchronization signal.
  • the transmitter 410 is configured to: send, according to the processor 430, a transmission period of the time synchronization signal to the at least one terminal device.
  • the transmitter 410 is further configured to: send, according to a sending period of the time synchronization signal, a time synchronization signal to the at least one terminal device under the control of the processor 430.
  • the processor 430 is further configured to: control the transmitter 410.
  • the processor 430 is further configured to: determine, according to the first time synchronization information in the time synchronization information, a sending period of the time synchronization signal, where the first time synchronization information is the time synchronization information. Time synchronization information corresponding to the transmission period of the shortest time synchronization signal.
  • the embodiment further includes a receiver 420.
  • the receiver 420 is configured to: receive the time synchronization from at least one of the one or more terminal devices, the core network, and another base station of the at least one terminal device under the control of the processor 430 At least one of the information.
  • the processor 430 is further configured to: control the receiver 420.
  • the time synchronization information is an initial context setup request message or an evolved radio access bearer setup request message.
  • the time synchronization information is by the one or more terminals The capability information of the device is carried.
  • an embodiment of a core network provided by the present application includes a sending unit 510.
  • the sending unit 510 is configured to: send time synchronization information of the terminal device to the base station, where the time synchronization information includes at least one of: delay jitter of the service supported by the at least one terminal device, supported by the at least one terminal device Time synchronization accuracy of the service, time synchronization capability of the at least one terminal device.
  • the embodiment further includes a receiving unit 520.
  • the receiving unit 520 is configured to: obtain at least one of the time synchronization information by using a service QoS of an upper layer interface; and/or receive the time from at least one of the terminal device, another core network, and another base station. At least one of the synchronization information.
  • the sending unit 510 is further configured to: send at least one of the time synchronization information to another core network and/or a base station.
  • another embodiment of the core network provided by the present application includes a transmitter 610 and a processor 630.
  • the transmitter 610 is configured to: send, by the processor 630, time synchronization information of the terminal device to the base station, where the time synchronization information includes at least one of: a delay of the service supported by the at least one terminal device The jitter, the time synchronization accuracy of the service supported by the at least one terminal device, and the time synchronization capability of the at least one terminal device.
  • the processor 630 is configured to: control the transmitter 610.
  • the embodiment further includes a receiver 620.
  • the receiver 620 is configured to: obtain, by the processor 630, at least one of the time synchronization information by using a service QoS of an upper layer interface, and/or from the terminal device, another core network, and another At least one of the base stations receives at least one of the time synchronization information.
  • the processor 630 is further configured to: control the receiver 620.
  • the transmitter 610 is further configured to: send at least one of the time synchronization information to another core network and/or a base station.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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

Abstract

La présente invention concerne un procédé et un dispositif de synchronisation temporelle. Le procédé comprend les étapes suivantes : une station de base détermine une période de transmission d'un signal de synchronisation temporelle pour au moins un dispositif terminal selon des informations de synchronisation temporelle du ou des dispositifs terminaux ; la station de base transmet la période de transmission du signal de synchronisation temporelle au ou aux dispositifs terminaux ; et la station de base transmet le signal de synchronisation temporelle au dispositif terminal selon la période de transmission du signal de synchronisation temporelle. La présente solution permet de fournir un équilibre entre la garantie de l'exigence de synchronisation temporelle et la garantie de l'efficacité des ressources.
PCT/CN2018/083564 2017-04-18 2018-04-18 Procédé et dispositif de synchronisation temporelle WO2018192527A1 (fr)

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CN111211852B (zh) 2018-11-21 2021-08-27 华为技术有限公司 同步的方法和装置
WO2020103540A1 (fr) * 2018-11-21 2020-05-28 华为技术有限公司 Appareil et procédé de synchronisation
CN111416698B (zh) * 2019-01-07 2023-08-15 中国移动通信有限公司研究院 一种业务同步需求指示方法、无线承载配置方法及设备
CN113260038A (zh) * 2020-02-07 2021-08-13 维沃移动通信有限公司 参考时间信息的获取方法、信息收发方法及相关设备
CN113119117B (zh) * 2021-03-22 2022-05-17 深圳市优必选科技股份有限公司 一种机器人的控制方法、控制器、机器人及控制系统

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