WO2022143926A1 - Procédé de synchronisation temporelle et appareil de communication - Google Patents

Procédé de synchronisation temporelle et appareil de communication Download PDF

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Publication number
WO2022143926A1
WO2022143926A1 PCT/CN2021/143200 CN2021143200W WO2022143926A1 WO 2022143926 A1 WO2022143926 A1 WO 2022143926A1 CN 2021143200 W CN2021143200 W CN 2021143200W WO 2022143926 A1 WO2022143926 A1 WO 2022143926A1
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Prior art keywords
network device
time
gap
moment
information
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PCT/CN2021/143200
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English (en)
Chinese (zh)
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李廉
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections

Definitions

  • the present application relates to the field of communication, and in particular, to a time synchronization method and communication device.
  • the present application provides a time synchronization method and communication device, which are universal to terminal devices, and can obtain the time synchronization offset between two network devices at low cost.
  • a time synchronization method which can be applied to a first network device, and can also be applied to components in the first network device (for example, a chip, a chip system, or a processor, etc.), including: the first network device Receive GAP parameters from the second network device, where the GAP parameters include the GAP cycle; the first network device determines the information of the first time, and the first time is the start time of measuring GAP in the first GAP cycle of the terminal device and corresponds to the first network device The absolute time in time sequence; the first network device sends the information of the first moment to the second network device, and the information of the first moment is used to determine the absolute time between the second network device and the first network device together with the information of the second moment Time offset, where the second time is the absolute time in the time sequence corresponding to the start time of the GAP measurement of the terminal device in the first GAP cycle of the terminal device corresponding to the second network device.
  • the first network device Receive GAP parameters from the second network device, where the GAP parameters include the GAP cycle; the
  • the synchronization time deviation of the two network devices is calculated by recording the absolute time of the start time of the GAP in the time sequence corresponding to the two network devices in the first GAP cycle after the GAP is issued.
  • the method does not depend on specific terminal equipment, and can be implemented by means of information exchange under the existing networking architecture on the network side, so that the time synchronization offset of two network equipment can be obtained at low cost, and it is universal to terminal equipment.
  • determining the first moment by the first network device includes: the first network device continues to send the PDCCH to the terminal device on each TTI after the GAP measurement by the terminal device takes effect. Scheduling information; the first network device determines a first period, where the first period is the period in which the first network device fails to detect the response message of the PDCCH scheduling information on the PUCCH for the first time length, wherein the first time length is the period when the terminal device is in The duration of GAP in one GAP cycle; when the first cycle is equal to the GAP cycle, the first network device determines the information of the first time according to the information of the third time and the first time offset, wherein the third time is the first time The network device fails to detect the start time of the response message for the first time for the first time, and the first time offset is the time interval for the downlink scheduling feedback of the terminal device.
  • the gNB actively initiates downlink data scheduling by continuously monitoring, and monitors the uplink feedback of the downlink scheduling to obtain the first The absolute time at the time sequence of the first network device when the first GAP periodic scheduling on the network device side does not respond to the start time.
  • the first time length is 6 ms.
  • the first network device is a secondary network device
  • the second network device is a primary network device
  • a time synchronization method which can be applied to a second network device, and can also be applied to components in the second network device (for example, a chip, a chip system, or a processor, etc.), including: the second network device Send the GAP parameter to the terminal device, the GAP parameter includes the GAP cycle and the GAP offset; the second network device determines the information of the second time according to the GAP offset, and the second time corresponds to the start time of the GAP measurement in the first GAP cycle of the terminal device The absolute time in the sequence to the second network device; the second network device receives the information of the first moment from the first network device, and the first moment is the start moment of measuring GAP in the first GAP cycle of the terminal device and corresponds to the first network The absolute time in the time series of the device; the second network device determines the time offset between the second network device and the first network device according to the information of the first moment and the information of the second moment.
  • the second network device Send the GAP parameter to the terminal device, the GAP parameter includes the G
  • the method before the second network device receives the first moment sent by the first network device, the method further includes: the second network device sends a GAP cycle to the first network device .
  • the first network device is a secondary network device
  • the second network device is a primary network device
  • the present application provides a communication device having a function of implementing the method in the first aspect or any possible implementation manner thereof.
  • the functions can be implemented by hardware, or by executing corresponding software by hardware.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • the communication apparatus may be a first network device.
  • the communication apparatus may be a component (eg, a chip or an integrated circuit) installed within the first network device.
  • the present application provides a communication device having a function of implementing the method in the second aspect or any possible implementation manner thereof.
  • the functions can be implemented by hardware, or by executing corresponding software by hardware.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • the communication apparatus may be a second network device.
  • the communication means may be a component (eg, a chip or an integrated circuit) mounted within the second network device.
  • the present application provides a communication device, comprising at least one processor, at least one processor coupled to at least one memory, at least one memory for storing computer programs or instructions, and at least one processor for calling from at least one memory And run the computer program or instructions to cause the communication device to perform the method in the first aspect or any possible implementations thereof.
  • the communication apparatus may be a first network device.
  • the communication means may be a component (e.g., a chip or an integrated circuit) mounted within the first network device.
  • the present application provides a communication device, comprising at least one processor, at least one processor coupled to at least one memory, at least one memory for storing computer programs or instructions, and at least one processor for calling from at least one memory And running the computer program or instructions causes the communication device to perform the method of the second aspect or any possible implementations thereof.
  • the communication apparatus may be a second network device.
  • the communication means may be a component (eg, a chip or an integrated circuit) mounted within the second network device.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the method of the first aspect or any possible implementation thereof is realized.
  • the above-mentioned processor may be a chip
  • the input circuit may be an input pin
  • the output circuit may be an output pin
  • the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver
  • the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter
  • the circuit can be the same circuit that acts as an input circuit and an output circuit at different times.
  • the embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the method of the second aspect or any possible implementation thereof is realized.
  • the above-mentioned processor may be a chip
  • the input circuit may be an input pin
  • the output circuit may be an output pin
  • the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver
  • the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter
  • the circuit can be the same circuit that acts as an input circuit and an output circuit at different times.
  • the embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.
  • the present application provides a computer-readable storage medium, where computer instructions are stored in the computer-readable storage medium. method is executed.
  • the present application provides a computer-readable storage medium, where computer instructions are stored in the computer-readable storage medium, and when the computer instructions are executed on a computer, the second aspect or any possible implementation manner thereof is implemented. method is executed.
  • the present application provides a computer program product, the computer program product comprising computer program code, when the computer program code is run on a computer, the computer program code, as in the first aspect or any possible implementation manner thereof, is provided. method is executed.
  • the present application provides a computer program product, the computer program product comprising computer program code, when the computer program code is run on a computer, the computer program code, as in the second aspect or any possible implementations thereof, is provided. method is executed.
  • the present application provides a chip, comprising a processor and a communication interface, the communication interface is used for receiving a signal and transmitting the signal to the processor, and the processor processes the signal to A method as in the first aspect or any possible implementation thereof is caused to be performed.
  • the present application provides a chip, including a processor and a communication interface, the communication interface being used to receive a signal and transmit the signal to the processor, and the processor processes the signal to A method as in the second aspect or any possible implementation thereof is caused to be performed.
  • the present application provides a communication system, including the communication device described in the fifth aspect and the communication device described in the sixth aspect.
  • FIG. 1 is an architecture of a communication system applicable to an embodiment of the present application.
  • FIG. 2 is an architecture of other communication systems applicable to the embodiments of the present application.
  • FIG. 3 is a schematic diagram of a communication system applicable to the communication method and communication device of the embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a time synchronization method provided by the present application.
  • FIG. 5 is a schematic diagram of absolute time offset of eNB and gNB.
  • FIG. 6 is a schematic block diagram of a communication apparatus 1000 provided by the present application.
  • FIG. 7 is a schematic block diagram of a communication apparatus 2000 provided by the present application.
  • FIG. 8 is a schematic structural diagram of a communication device 10 provided by the present application.
  • FIG. 9 is a schematic structural diagram of a communication device 20 provided by the present application.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, for example, a long term evolution (long term evolution, LTE) system, a fifth generation (5th generation, 5G) system, or a communication system after 5G.
  • LTE long term evolution
  • 5G fifth generation
  • 5G communication system after 5G.
  • the terminal device in this embodiment of the present application may refer to a user equipment (user equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless Communication equipment, user agent or user equipment.
  • UE user equipment
  • the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks or terminal devices in other communication systems, etc., are not limited in this application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the wireless access network device in this embodiment of the present application may be any device with a wireless transceiver function.
  • the access network equipment includes but is not limited to: evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), access point (access point, AP),
  • a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc. can also be a gNB or a transmission point in the 5G system, or can also be a gNB Or a network node of a transmission point, for example, a baseband unit (building baseband unit, BBU) or a distributed unit (distributed unit, DU
  • MC multiple connectivity
  • DC dual connectivity
  • DC may include various combinations, and several are listed below.
  • the core network is an evolved packet core (EPC), the LTE base station is the primary base station, and the NR base station is the secondary base station.
  • EPC evolved packet core
  • FIG. 1 is an architecture of a communication system applicable to this embodiment of the present application.
  • there is an X2 interface between the LTE base station and the NR base station and at least there is a control plane connection, and there may also be a user plane connection.
  • There is an S1-U interface between the LTE base station and the EPC that is, there can be a user plane connection.
  • the LTE base station can provide air interface resources for the UE through at least one LTE cell, and the at least one LTE cell is called a master cell group (master cell group, MCG).
  • the NR base station may also provide air interface resources for the UE through at least one NR cell, and the at least one NR cell is called a secondary cell group (secondary cell group, SCG).
  • secondary cell group secondary cell group
  • the core network is 5GC
  • the LTE base station is the main base station
  • the NR base station is the secondary base station.
  • the LTE base station can provide air interface resources for the UE through at least one LTE cell, and the at least one LTE cell is called an MCG.
  • the NR base station may also provide air interface resources for the UE through at least one NR cell, and the at least one NR cell is called an SCG.
  • the core network is 5GC, the NR base station is the main base station, and the LTE base station is the secondary base station.
  • the NR base station can provide air interface resources for the UE through at least one NR cell, and the at least one NR cell is called an MCG.
  • the LTE base station may also provide air interface resources for the UE through at least one LTE cell, where the at least one LTE cell is called an SCG.
  • the core network is 5GC, and both the master station and the secondary base station are NR base stations.
  • the interface between the primary base station and the secondary base station is an Xn interface, which at least has a control plane connection and may also have a user plane connection.
  • the master base station can provide air interface resources for the UE through at least one NR cell, and the at least one NR cell is called an MCG.
  • the secondary base station may also provide air interface resources for the UE through at least one NR cell, and the at least one NR cell is called an SCG.
  • FIG. 2 shows other communication system architectures applicable to the embodiments of the present application.
  • (a), (b) and (c) in FIG. 2 may correspond to the networking architectures described in the above examples (2), (3) and (4), respectively, and will not be described again.
  • This application does not limit the specific DC architecture. It is suitable for both EN-DC of traditional LTE, MR-DC and other DC architectures in the future.
  • FIG. 3 is a schematic diagram of a communication system applicable to the communication method and communication device of the embodiment of the present application.
  • the communication system 400 may include at least one network device, such as the network device 410 and the network device 420 shown in FIG. 3 ; the communication system 400 may also include at least one terminal device, such as the terminal shown in FIG. 3 . device 430.
  • the terminal device 430 may be mobile or fixed.
  • Both the network device 410 and the network device 420 are devices that can communicate with the terminal device 430 through a wireless link, such as a base station or a base station controller.
  • Each network device can provide communication coverage for a specific geographic area and can communicate with terminal devices located within that coverage area (cell).
  • the wireless communication system 400 may further include at least one core network, such as the core network 440 shown in FIG. 3 , and the core network 440 may be a 4G core network or a 5G core network or the like.
  • the core network 440 and the terminal device 430 may form a dual-link architecture of the deployment scenario described above.
  • the network device 410 is an LTE base station serving as a primary base station
  • the network device 420 is an NR base station serving as a secondary base station
  • the core network 440 is a 4G core network EPC
  • a control plane connection and a data plane connection exist between the network device 410 and the core network 440
  • both the network device 410 and the network device 420 provide air interface transmission resources for data transmission between the terminal device 430 and the core network 440 . That is, the dual-link deployment scenario shown in FIG. 1 is formed.
  • the network device 410 corresponds to the eNB shown in FIG. 1
  • the network device 420 corresponds to the gNB shown in FIG. 1
  • the core network corresponds to the EPC shown in FIG. 1 .
  • the communication system shown in FIG. 3 can also form a dual-link architecture for other deployment scenarios described above.
  • FIG. 3 exemplarily shows two network devices and one terminal device, but this should not constitute any limitation to the present application.
  • the communication system 400 may include more network devices, and the coverage of each network device may include other numbers of terminal devices.
  • the communication system 400 may further include multiple core network devices. This embodiment of the present application does not limit this.
  • Each of the above communication devices may be configured with multiple antennas.
  • the plurality of antennas may include at least one transmit antenna for transmitting signals and at least one receive antenna for receiving signals.
  • each communication device additionally includes a transmitter chain and a receiver chain, which can be understood by those of ordinary skill in the art, all of which may include multiple components (eg, processors, modulators, multiplexers) related to signal transmission and reception. , demodulator, demultiplexer or antenna, etc.). Therefore, the network device and the terminal device can communicate through the multi-antenna technology.
  • the wireless communication system 400 may further include other network entities such as a network controller, a mobility management entity, and the like, which are not limited in this embodiment of the present application.
  • network entities such as a network controller, a mobility management entity, and the like, which are not limited in this embodiment of the present application.
  • Measurement GAP Usually, the UE has only one receiver, and it is only possible to receive signals on one frequency point at the same time, so there is no way to do both. Therefore, the measurement GAP is a time interval that the network equipment and the UE have agreed to use for measurement, and the UE is allowed to leave the current frequency point to measure at other frequency points. During this time, the network equipment has agreed not to require the UE to send and receive, so the UE It is possible to focus on measurement instead of data transmission and reception. In essence, measurement GAP is a time-sharing mechanism for data transmission and reception and mobility measurement. The measurement GAP is used for inter-frequency measurement and inter-system measurement. In inter-frequency and inter-system measurement, the UE only performs measurement within the measurement GAP.
  • the time domain can be divided into multiple radio frames (frames), each radio frame is 10ms long, divided into 10 subframes (subframes), numbered #0 ⁇ #9, each subframe time is 1ms.
  • each radio frame since there is only one type of subcarrier spacing, that is, 15khz, each subframe has 2 time slots (slots), and each time slot is 0.5ms.
  • the slot length depends on the subcarrier spacing. There are 5 optional subcarrier spacings, including 15khz, 30khz, 60khz, 120khz, and 240khz. The wider the subcarrier spacing, the shorter the time slot duration. For example: when the subcarrier is 30khz, each subframe has 2 time slots, each time slot is 0.5ms, then each radio frame contains 20 time slots, numbered #0 ⁇ #20.
  • Transmission time interval a time parameter commonly used in existing communication systems, and is a time unit for scheduling data in a communication system.
  • TTI Transmission time interval
  • the time length of one TTI is 1 ms, which corresponds to the time length of one subframe (subframe), that is, the time length of two time slots.
  • one transmission unit is one time slot. Since the larger the subcarrier spacing is, the shorter the duration of one time slot is. Therefore, the larger the subcarrier spacing in NR, the shorter the TTI and the shorter the air interface transmission. The lower the delay, the higher the corresponding requirements for the system.
  • SFN System frame number
  • Frame number (FN) the number of each radio frame.
  • FIG. 4 is a schematic flowchart of a time synchronization method provided by the present application.
  • this application takes an EN-DC scenario as an example for description, wherein the eNB is the primary network device (ie, an example of the second network device), and the gNB is the secondary network device (ie, an example of the first network device).
  • FN/SFN X/Y in the LTE system, which indicates the subframe with the sequence number Y in the Xth frame, wherein the 10 subframes in each radio frame are respectively The numbers are #0 to #9.
  • the eNB sends a GAP parameter to a terminal device, where the GAP parameter includes a GAP offset and a GAP period.
  • the GAP mode is divided into two types: gp0 and gp1, the GAP cycle of the gp0 mode is 40ms, and the GAP cycle of the gp1 mode is 80ms. No matter which GAP mode it is, the duration of each GAP is 6ms (ie, the first time length).
  • the range of the GAP offset (also referred to as gapOffset) in the gp0 mode is 0-39, and the range of the gapOffset in the gp1 mode is 0-79.
  • the terminal device and the eNB can determine the specific GAP time.
  • the eNB determines the information of the second moment according to the GAP offset.
  • the second time is the absolute time corresponding to the time sequence of the eNB side from the start time of the GAP measurement of the terminal device in the first GAP cycle.
  • FIG. 5 is a schematic diagram of the absolute time offset of the eNB and the gNB.
  • the gNB receives GAP parameters from the eNB, where the GAP parameters include a GAP period.
  • S401 and S403 have no time sequence. For example, S401 and S403 may be sent at the same time, or S401 or S403 may be sent first.
  • the gNB determines the information of the first moment.
  • the first time is the absolute time corresponding to the time sequence of the gNB side from the start time of GAP measurement in the first GAP cycle of the terminal device.
  • the gNB After the terminal device measures the GAP, the gNB continues to send physical downlink control channel (PDCCH) scheduling information to the terminal device on each TTI, and records the uplink TTI timing relationship for which the PDCCH scheduling information does not respond.
  • PDCCH physical downlink control channel
  • the PDCCH scheduling information includes one or more of information such as uplink grant, downlink grant, and medium access control (media access control, MAC) control element (control element, CE).
  • information such as uplink grant, downlink grant, and medium access control (media access control, MAC) control element (control element, CE).
  • MAC media access control
  • the PDCCH scheduling information is a downlink grant (DL grant) as an example for description.
  • DL grant downlink grant
  • the gNB continues to issue the DL grant to the UE every TTI, and records the TTI of the response message that the gNB cannot detect the DL grant.
  • the gNB sends the DL grant in the time slot N, and then the gNB detects the response message of the DL grant in the time slot (N+4), where the time difference 4 is the downlink scheduling hybrid automatic repeat request (hybrid automatic repeat request).
  • the first time offset is the time offset of the gNB from sending the PDCCH scheduling information to receiving the response message of the PDCCH scheduling information. It can be seen from the above that the UE does not detect PDCCH scheduling information during GAP measurement. Therefore, if time slot N is during GAP measurement, the gNB cannot detect the corresponding uplink feedback in time slot (N+4).
  • the UE downlink scheduling HARQ timing sequence is fixed, that is, the above-mentioned first time offset is fixed, that is to say, for the gNB, the gNB can predict in advance which time unit to receive the response of the PDCCH scheduling information information.
  • the duration of each time the gNB fails to detect the response message of the DL grant during the GAP period is also 6ms.
  • the period (ie, the first period) of the response message of the DL grant is not detected by the gNB on the expected PUCCH for 6ms, the period (ie, the first period) is consistent with the GAP period, and it is considered that the DL grant does not respond because the DL grant falls into the UE measurement GAP period.
  • the gNB determines the information of the third moment.
  • the first time is the start time when the gNB fails to detect the response message of the DL grant for the first time for the first time.
  • the gNB determines the information of the first time according to the information of the third time and the first time offset.
  • the third moment is first determined, and then the first moment is determined according to the downlink scheduling HARQ sequence of the UE.
  • the time unit in which the response message of the DL grant cannot be periodically detected can be shifted forward by 4 time slots as a whole from the HARQ timing sequence according to the downlink scheduling of the UE, and then the first moment can be determined, for example, see S603' and S604 ':
  • the gNB determines that the delivery position of the DL grant with no response for 6 consecutive TTIs occurs for the first time since the UE's GAP measurement takes effect, that is, the start time of the GAP measurement in the first GAP period of the terminal device's GAP measurement is at the NR air interface.
  • the absolute time ie, the first moment
  • FN/SFN 123/9.
  • the above method is based on the characteristics that the terminal equipment does not respond to the scheduling authorization during the GAP measurement period, and the timing relationship between the downlink authorization and the scheduling feedback is fixed. Absolute time for GAP periodic scheduling of unresponsive slots.
  • the gNB sends the information of the first moment to the eNB.
  • the eNB determines the time offset between the eNB and the gNB according to the information of the first time and the information of the second time.
  • the eNB can also send the second moment to the gNB, and the gNB can calculate the time offset between the two, or it can also send the first moment and the second moment to other network devices, and the other network devices can calculate the time difference between the two.
  • the time offset between network elements is not specifically limited in this application.
  • the LTE side and the NR side are calculated.
  • Sync time offset The method does not depend on specific terminal equipment, and can be realized by means of information exchange under the existing networking architecture on the network side, so that the time synchronization offset of the LTE side and the NR side can be obtained at a low cost, and it is universal to the terminal equipment.
  • FIG. 6 is a schematic block diagram of a communication apparatus 1000 provided in the present application.
  • the communication apparatus 1000 includes a receiving unit 1100 , a processing unit 1200 and a sending unit 1300 .
  • the receiving unit 1100 is configured to receive GAP parameters from the second network device, where the GAP parameters include the GAP cycle; the processing unit 1200 is configured to determine the information of the first moment, where the first moment is the measurement in the first GAP cycle of the terminal device The start time of the GAP corresponds to the absolute time in the sequence of the first network device; the sending unit 1300 is configured to send the information of the first time to the second network device, and the information of the first time is used to communicate with the second network device.
  • the information at the second moment jointly determines the absolute time offset between the second network device and the first network device, where the second moment is the start moment of GAP measurement in the first GAP cycle of the terminal device Corresponding to the absolute time on the timing of the second network device.
  • the processing unit 1200 is specifically configured to: continue to send PDCCH scheduling information to the terminal device on each TTI after the terminal device measures GAP taking effect; the first network The device determines a first cycle, where the first cycle is a cycle in which the first network device fails to detect the response message of the PDCCH scheduling information on the PUCCH for a first time length, where the first time length is the GAP duration of the terminal device in one GAP cycle; when the first cycle is equal to the GAP cycle, the first network device determines according to the information at the third moment and the first time offset The information of the first time, wherein the third time is the start time when the first network device fails to detect the response message for the first time for the first time, and the first time offset The time interval for downlink scheduling feedback for the terminal equipment.
  • the first time length is 6 ms.
  • the sending unit 1300 and the receiving unit 1100 may also be integrated into a transceiver unit, which has the functions of receiving and sending at the same time, which is not limited here.
  • the communication apparatus 1000 may be the first network device in the method embodiment.
  • the sending unit 1100 may be a transmitter
  • the receiving unit 1200 may be a receiver.
  • the receiver and transmitter can also be integrated into a transceiver.
  • the processing unit 1300 may be a processing device.
  • the communication apparatus 1000 may be a chip or an integrated circuit installed in the first network device.
  • the sending unit 1100 and the receiving unit 1200 may be a communication interface or an interface circuit.
  • the sending unit 1100 is an output interface or an output circuit
  • the receiving unit 1200 is an input interface or an input circuit
  • the processing unit 1300 may be a processing device.
  • the processing device may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the processing apparatus may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory, so that the communication apparatus 1000 executes the process executed by the first network device in each method embodiment. manipulation and/or processing.
  • the processing means may comprise only a processor, the memory for storing the computer program being located outside the processing means.
  • the processor is connected to the memory through circuits/wires to read and execute the computer program stored in the memory.
  • the processing device may be a chip or an integrated circuit.
  • FIG. 7 is a schematic block diagram of a communication apparatus 2000 provided in the present application.
  • the communication apparatus 2000 includes a sending unit 2100 , a processing unit 2200 and a receiving unit 2300 .
  • the sending unit 2100 is configured to send GAP parameters to the terminal device, where the GAP parameters include a GAP period and a GAP offset; the processing unit 2200 is configured to determine information of a second moment according to the GAP offset, where the second moment is the absolute time corresponding to the time sequence of the second network device from the start time of the GAP measurement of the terminal device in the first GAP cycle; the receiving unit 2300 is configured to receive the information of the first time from the first network device, the The first moment is the absolute time corresponding to the time sequence of the first network device from the start moment of GAP measurement in the first GAP cycle of the terminal device; the second network device is based on the information at the first moment and all The information of the second time instant determines the time offset between the second network device and the first network device.
  • the GAP parameters include a GAP period and a GAP offset
  • the processing unit 2200 is configured to determine information of a second moment according to the GAP offset, where the second moment is the absolute time corresponding to the time sequence of the second network
  • the receiving unit 2300 before the first moment sent by the receiving unit by the first network device, the receiving unit 2300 is further configured to send the GAP cycle to the first network device.
  • the sending unit 2100 and the receiving unit 2300 may also be integrated into a transceiver unit, which has the functions of receiving and sending at the same time, which is not limited here.
  • the communication apparatus 2000 may be the second network device in the method embodiment.
  • the sending unit 2100 may be a transmitter
  • the receiving unit 2300 may be a receiver.
  • the receiver and transmitter can also be integrated into a transceiver.
  • the processing unit 2200 may be a processing device.
  • the communication apparatus 2000 may be a chip or an integrated circuit installed in the second network device.
  • the sending unit 2100 and the receiving unit 2300 may be a communication interface or an interface circuit.
  • the sending unit 2100 is an output interface or an output circuit
  • the receiving unit 2300 is an input interface or an input circuit
  • the processing unit 2200 may be a processing device.
  • the processing device may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the processing apparatus may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory, so that the communication apparatus 2000 executes the process executed by the second network device in each method embodiment. manipulation and/or processing.
  • the processing means may comprise only a processor, the memory for storing the computer program being located outside the processing means.
  • the processor is connected to the memory through circuits/wires to read and execute the computer program stored in the memory.
  • the processing device may be a chip or an integrated circuit.
  • FIG. 8 is a schematic structural diagram of a communication device 10 provided by the present application.
  • the communication device 10 includes: one or more processors 11 , one or more memories 12 and one or more communication interfaces 13 .
  • the processor 11 is used to control the communication interface 13 to send and receive signals
  • the memory 12 is used to store a computer program
  • the processor 11 is used to call and run the computer program from the memory 12, so that in each method embodiment of the present application, the first network device Executed processes and/or operations are performed.
  • the processor 11 may have the function of the processing unit 1200 shown in FIG. 6
  • the communication interface 13 may have the function of the transmitting unit 1300 and/or the receiving unit 1100 shown in FIG. 6 .
  • the processor 11 may be configured to perform processing or operations performed internally by the first network device in the foregoing method embodiments
  • the communication interface 13 may be configured to perform the sending and/or operations performed by the first network device in the foregoing method embodiments. received action.
  • the communication apparatus 10 may be the first network device in the method embodiment.
  • the communication interface 13 may be a transceiver.
  • a transceiver may include a receiver and a transmitter.
  • the processor 11 may be a baseband device, and the communication interface 13 may be a radio frequency device.
  • the communication apparatus 10 may be a chip installed in the first network device.
  • the communication interface 13 may be an interface circuit or an input/output interface.
  • FIG. 9 is a schematic structural diagram of a communication device 20 provided by the present application.
  • the communication device 20 includes: one or more processors 21 , one or more memories 22 and one or more communication interfaces 23 .
  • the processor 21 is used to control the communication interface 23 to send and receive signals
  • the memory 22 is used to store a computer program
  • the processor 21 is used to call and run the computer program from the memory 22, so that in each method embodiment of the present application, the second network device Executed processes and/or operations are performed.
  • the processor 21 may have the function of the processing unit 2200 shown in FIG. 7
  • the communication interface 23 may have the function of the transmitting unit 2100 and/or the receiving unit 2300 shown in FIG. 7 .
  • the processor 21 may be configured to perform processing or operations performed internally by the second network device in the foregoing method embodiments
  • the communication interface 23 may be configured to perform the sending and/or operations performed by the second network device in the foregoing method embodiments. received action.
  • the communication apparatus 20 may be the second network device in the method embodiment.
  • the communication interface 23 may be a transceiver.
  • a transceiver may include a receiver and a transmitter.
  • the processor 21 may be a baseband device, and the communication interface 23 may be a radio frequency device.
  • the communication apparatus 20 may be a chip installed in the second network device.
  • the communication interface 23 may be an interface circuit or an input/output interface.
  • processors and the memory in the foregoing apparatus embodiments may be physically independent units, or the memory may also be integrated with the processor, which is not limited herein.
  • the present application further provides a computer-readable storage medium, where computer instructions are stored in the computer-readable storage medium, and when the computer instructions are executed on the computer, the operations performed by the first network device in each method embodiment of the present application are made. and/or processes are executed.
  • the present application further provides a computer-readable storage medium, where computer instructions are stored in the computer-readable storage medium, and when the computer instructions are executed on the computer, the operations performed by the second network device in each method embodiment of the present application are made. and/or processes are executed.
  • the present application also provides a computer program product.
  • the computer program product includes computer program codes or instructions.
  • the operations performed by the first network device in each method embodiment of the present application and/or the instructions are executed. or the process is executed.
  • the present application also provides a computer program product.
  • the computer program product includes computer program codes or instructions.
  • the operations performed by the second network device in each method embodiment of the present application and/or the instructions are executed. or the process is executed.
  • the present application also provides a chip including a processor.
  • the memory for storing the computer program is provided independently of the chip, and the processor is configured to execute the computer program stored in the memory, so that the operations and/or processing performed by the first network device in any one of the method embodiments are performed.
  • the chip may further include a communication interface.
  • the communication interface may be an input/output interface or an interface circuit or the like.
  • the chip may further include the memory.
  • the present application also provides a chip including a processor.
  • the memory for storing the computer program is provided independently of the chip, and the processor is configured to execute the computer program stored in the memory, so that the operations and/or processing performed by the second network device in any one of the method embodiments are performed.
  • the chip may further include a communication interface.
  • the communication interface may be an input/output interface or an interface circuit or the like.
  • the chip may further include the memory.
  • the present application further provides a communication system, including the first network device, the second network device, and the terminal device in the embodiments of the present application.
  • the processor in this embodiment of the present application may be an integrated circuit chip, which has the capability of processing signals.
  • each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the processor can be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the methods disclosed in the embodiments of the present application may be directly embodied as executed by a hardware coding processor, or executed by a combination of hardware and software modules in the coding processor.
  • the software module may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, and other media that can store program codes.

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

Abstract

La présente demande concerne un procédé de synchronisation temporelle. Le procédé consiste : après l'émission d'une GAP, à enregistrer le temps absolu, sur une séquence temporelle correspondant à un premier élément de réseau, d'un moment de démarrage sans réponse à la distribution dans une première période GAP d'un côté du premier dispositif de réseau, et le temps absolu, sur une séquence temporelle correspondant à un second élément de réseau, d'un moment de démarrage sans réponse à la distribution dans une première période de GAP d'un second côté de dispositif de réseau, de façon à calculer un écart de temps de synchronisation entre les deux dispositifs de réseau. Ledit procédé ne repose pas sur un dispositif terminal spécifique, et présente une universalité pour les dispositifs terminaux ; et ledit procédé peut être mis en œuvre au moyen d'une interaction d'informations sous l'architecture de mise en réseau existante d'un côté réseau, de sorte qu'un décalage de synchronisation temporelle entre deux dispositifs de réseau peut être acquis à faible coût.
PCT/CN2021/143200 2021-01-04 2021-12-30 Procédé de synchronisation temporelle et appareil de communication WO2022143926A1 (fr)

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