WO2019158067A1 - 一种时间信息的传输方法及装置 - Google Patents

一种时间信息的传输方法及装置 Download PDF

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Publication number
WO2019158067A1
WO2019158067A1 PCT/CN2019/074924 CN2019074924W WO2019158067A1 WO 2019158067 A1 WO2019158067 A1 WO 2019158067A1 CN 2019074924 W CN2019074924 W CN 2019074924W WO 2019158067 A1 WO2019158067 A1 WO 2019158067A1
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WIPO (PCT)
Prior art keywords
information
time
reference point
time unit
unit
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PCT/CN2019/074924
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English (en)
French (fr)
Inventor
汲桐
高峰
张言飞
杨坤
于光炜
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP19754842.3A priority Critical patent/EP3745784A4/en
Publication of WO2019158067A1 publication Critical patent/WO2019158067A1/zh
Priority to US16/990,564 priority patent/US20200396705A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C11/00—Synchronisation of independently-driven clocks
    • G04C11/02—Synchronisation of independently-driven clocks by radio
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G7/00—Synchronisation
    • G04G7/02—Synchronisation by radio
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes

Definitions

  • the embodiments of the present invention relate to the field of wireless communications, and in particular, to a method and an apparatus for transmitting time information.
  • the controller needs to maintain time synchronization with the actuator.
  • the controller sends control signaling to the executor to instruct the executor to execute the command at a determined time. If the executor and the controller have different perceptions of time, that is, the time is not synchronized, the executor will execute the command at the wrong time, resulting in Task execution failed.
  • a phase measurement unit which is deployed as a terminal device on a power line, is used to sense changes in power information, such as changes in voltage, current, and the like.
  • PMU phase measurement unit
  • Each PMU needs to maintain time synchronization in order to determine the point of failure. If the perception of time between PMUs is different, it will result in an inaccurate determination of the location of the fault point.
  • the network device serves as a centralized controller of the terminal device, and can serve as a time synchronization source of the terminal device, and send indication information to the terminal device, so that all terminal devices in the cell keep time synchronization with the network device, and indirectly reach Time synchronization between terminal devices.
  • synchronization at the microsecond level between terminal devices is required. If the terminal device determines the time according to the prior art, because the indication granularity of the indication information is large, the error between the time determined by the terminal device according to the indication information and the time of the network device is large, and therefore, the terminal device in the prior art cannot reach the industrial Time synchronization requirements in communication scenarios.
  • the embodiment of the present invention provides a method and a device for transmitting time information, which solves the problem that the time determined by the terminal device and the time of the network device are large.
  • a first aspect of the present application provides a method for transmitting time information.
  • the method includes: first, generating and transmitting first information indicating that the granularity is less than or equal to 5 milliseconds, where the first information is used to indicate the first reference point.
  • Time information The sending entity that sends the first information may be a network device or a chip of the network device.
  • the receiving entity that receives the first information may be a terminal device or a chip of the terminal device.
  • the method for transmitting time information provided by the embodiment of the present application improves the accuracy of the indication granularity of the indication information by reducing the indication granularity of the indication information, and transmits the high-precision time information to the receiving entity for receiving.
  • the entity determines the time according to the high-precision time information, thereby reducing the error between the time determined by the receiving entity and the time of transmitting the entity, so that the receiving entity meets the time synchronization requirement in the industrial communication scenario.
  • the first information is used to indicate time information of the first reference point, and the first information is used to indicate time information of the first reference point under the universal clock, or The first information is used to indicate a portion of the time information of the first reference point under the universal clock.
  • the sending the first information includes: sending the first information by using a system message, or by using a radio resource control (RRC) At least one of signaling, medium access control (MAC) layer signaling, and physical layer signaling sends the first information, thereby transmitting the first information in a unicast manner, thereby improving the security of time information transmission. Sex, to avoid time information being arbitrarily tampering or attacking.
  • RRC radio resource control
  • the first reference point is a boundary of a time unit corresponding to a time domain location in which the first information is first transmitted.
  • the first reference point corresponds to the information content in the first information, and/or the first reference point is used to schedule the first information.
  • the content in the downlink control information (DCI) corresponds.
  • the time unit corresponding to the time domain location of the first information is a time unit in which the time domain location of the first information is located, or
  • the time unit corresponding to the time domain position of the information is the time unit indicated in the DCI corresponding to the first information.
  • the first information is used to indicate a part of time information of the first reference point under the universal clock
  • the method further includes: sending, by using a system message
  • the second information is used to indicate the time information of the first reference point, the second information indicating that the granularity is greater than the first information indicating granularity; and the value of the part of the time information of the first reference point indicated by the first information under the universal clock
  • the range is [-N,0], [-N,0), (-N,0], (-N,0), [-N/2,N/2], (-N/2,N/2 ], (-N/2, N/2), [-N/2, N/2), [0, N], (0, N), [0, N), and (0, N)
  • N is the second information indicating granularity.
  • the first information is sent by using any one of system message, dedicated RRC signaling, MAC layer signaling, and physical layer signaling. Indicates the granularity of the information.
  • the time unit is a symbol, a time slot, a subframe, a radio frame, a super frame, and a system message. Any one of a window, a system message period, and a system message change period; if the first information is sent by using at least one of dedicated RRC signaling, MAC layer signaling, and physical layer signaling, the time unit is a symbol, a time slot, Any of a subframe, a radio frame, a superframe, a search space period, and a discontinuous reception period.
  • the method before the sending the first information, further includes: receiving an application message, where the application message is used to apply for the first information.
  • a second aspect of the present application provides a method for transmitting time information, including: receiving first information indicating that a granularity is less than or equal to 5 milliseconds, where the first information is used to indicate time information of the first reference point; The information determines the time of the first reference point.
  • the receiving entity that receives the first information may be a terminal device or a chip of the terminal device.
  • the sending entity that sends the first information may be a network device or a chip of the network device.
  • the method for transmitting time information improves the accuracy of the indication granularity of the indication information by reducing the indication granularity of the indication information, and transmits the high-precision time information to the receiving entity, so that the receiving entity The time is determined according to the high-precision time information, thereby reducing the error between the time determined by the receiving entity and the time of transmitting the entity, so that the receiving entity meets the time synchronization requirement in the industrial communication scenario.
  • the first information is used to indicate time information of the first reference point, where the first information is used to indicate time information of the first reference point under the universal clock, or The first information is used to indicate a portion of the time information of the first reference point under the universal clock.
  • receiving the first information includes: receiving the first information by using a system message, or by using dedicated RRC signaling, MAC layer signaling, and physical At least one of the layer signaling receives the first information.
  • the first reference point is a boundary of a time unit corresponding to a time domain location in which the first information is first transmitted.
  • the first reference point corresponds to the information content in the first information, and/or the first reference point is used to schedule the first information.
  • the content in the DCI corresponds.
  • the first information is used to indicate a part of the time information of the first reference point under the universal clock
  • the method further includes: receiving, by using the system message
  • the second information is used to indicate the time information of the first reference point, the second information indicating that the granularity is greater than the first information indicating granularity; and the value of the part of the time information of the first reference point indicated by the first information under the universal clock
  • the range is [-N,0], [-N,0), (-N,0], (-N,0), [-N/2,N/2], (-N/2,N/2 ], (-N/2, N/2), [-N/2, N/2), [0, N], (0, N], [0, N) and (0, N), Any one of wherein N is a second information indicating granularity.
  • determining a time of the first reference point according to the first information includes: determining a time of the first reference point according to the first information and the second information.
  • the method further includes: receiving, by using any one of system message, dedicated RRC signaling, MAC layer signaling, and physical layer signaling, Information indicating that the first information indicates granularity.
  • the method before receiving the first information, further includes: sending an application message, where the application message is used to apply for the first information.
  • a third aspect of the embodiments of the present application provides a wireless communication device, where the wireless communication device is a chip of a network device or a network device, and includes: a processing unit, configured to generate first information, where the first information is used to indicate the first reference point Time information, the first information indicating that the granularity is less than or equal to 5 milliseconds; and the sending unit, configured to send the first information.
  • a fourth aspect of the embodiments of the present application provides a wireless communication device, where the wireless communication device is a chip of a terminal device or a terminal device, and includes: a receiving unit, configured to receive first information, where the first information is used to indicate the first reference point Time information, the first information indicating that the granularity is less than or equal to 5 milliseconds; and the processing unit, configured to determine the time of the first reference point according to the first information.
  • the functional modules of the foregoing third and fourth aspects may be implemented by hardware, or may be implemented by hardware corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a transceiver for performing the functions of the receiving unit and the transmitting unit, a processor for completing the functions of the processing unit, a memory, and program instructions for the processor to process the transmission method of the time information of the embodiment of the present application.
  • the processor, transceiver, and memory are connected by a bus and communicate with each other.
  • the function of transmitting the behavior of the entity in the transmission method of the time information provided by the first aspect and the function of receiving the behavior of the entity in the transmission method of the time information provided by the second aspect may be referred to.
  • a fifth aspect of the embodiments of the present application provides a wireless communication apparatus, including: a processor, a memory, a bus, and a communication interface; the memory is configured to store a computer execution instruction, and the processor is connected to the memory through the bus, when While the processor is running, the processor executes the computer-executable instructions stored by the memory to cause the wireless communication device to perform the method of any of the above aspects.
  • a sixth aspect of the embodiments of the present application provides a computer readable storage medium comprising: computer software instructions; and when the computer software instructions are executed in the wireless communication device, causing the network device to perform the transmission method of the time information of any of the above aspects.
  • a seventh aspect of the embodiments of the present application provides a computer program product comprising instructions for causing a wireless communication device to perform a method of transmitting time information of any of the above aspects when the computer program product is run in a wireless communication device.
  • the names of the wireless communication device, the network device, and the terminal device are not limited to the device itself. In actual implementation, the devices may appear under other names. As long as the functions of the respective devices are similar to the embodiments of the present application, they are within the scope of the claims and their equivalents.
  • FIG. 1 is a simplified schematic diagram of a system architecture provided by an embodiment of the present application.
  • FIG. 2 is a flowchart of a method for transmitting time information according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a first reference point according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of another first reference point provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of still another first reference point according to an embodiment of the present application.
  • FIG. 6 is a flowchart of another method for transmitting time information according to an embodiment of the present application.
  • FIG. 7 is a flowchart of still another method for transmitting time information according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of another communication apparatus according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of still another communication apparatus according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of still another communication apparatus according to an embodiment of the present application.
  • the system may include: a network device 11 and at least one terminal device 12.
  • Each terminal device 12 performs wireless communication with the network device 11 using a wireless communication technology.
  • the wireless communication technology may be the fourth generation (4G) wireless communication technology or the fifth generation (5G) mobile communication technology.
  • the network device can serve as a time synchronization source of the terminal device, and the terminal device keeps time synchronization with the network device according to the time information transmission method described in this embodiment.
  • the network device may be a base station (BS) or a base station controller of wireless communication. It can also be called a transceiver station, a relay station, a transmission reception point (TRP), and the like.
  • the network device is a device deployed in the radio access network to provide the radio access function for the terminal device 12.
  • the function may include one or more of the following functions: performing radio resource management and paging message organization. And the organization of sending and transmitting broadcast messages and sending, the configuration of measurement and measurement reports for mobility or scheduling, and so on.
  • the names of devices with network device functions may be different, for example, in a 3G system, called a base station (Node B); in a 4G system, called an evolved type.
  • eNodeB evolved NodeB
  • gNB next generation NodeB
  • the names of network devices may change.
  • the embodiments of the present application do not limit the specific technologies and specific device modes adopted by the network device.
  • the terminal device may also be referred to as a terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), or the like.
  • the terminal device can be a mobile phone, a tablet (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, industrial control (industrial control) Wireless terminal, wireless terminal in self driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless in transport safety A terminal, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.
  • the embodiments of the present application do not limit the specific technologies and specific device modes adopted by the terminal device.
  • the words “exemplary” or “such as” are used to mean an example, an illustration, or a description. Any embodiment or design described as “example” or “such as” in the embodiments of the present application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the words “exemplary” or “such as” is intended to present a concept in a specific manner.
  • 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.
  • connection in the present application refers to that it can communicate with each other, and may be connected by a wired connection or a wireless connection, which is not specifically limited in the embodiment of the present application.
  • the devices connected to each other may be directly connected to each other, or may be connected through other devices, which is not specifically limited in this embodiment.
  • the embodiment of the present application provides a method for transmitting time information.
  • the basic principle is that the sending entity generates and sends the first information indicating that the granularity is less than or equal to 5 milliseconds.
  • the first information is used to indicate time information of the first reference point, and after receiving the first information indicating that the granularity is less than or equal to 5 milliseconds, the receiving entity determines the time of the first reference point according to the first information.
  • the sending entity that sends the first information may be a network device or a chip of the network device.
  • the receiving entity that receives the first information may be a terminal device or a chip of the terminal device.
  • the method for transmitting time information improves the accuracy of the indication granularity of the indication information by reducing the indication granularity of the indication information, and transmits the high-precision time information to the receiving entity, so that the receiving entity The time is determined according to the high-precision time information, thereby reducing the error between the time determined by the receiving entity and the time of transmitting the entity, so that the receiving entity meets the time synchronization requirement in the industrial communication scenario.
  • the embodiment of the present application assumes that the sending entity is a network device, and the receiving entity is a terminal device.
  • the communication between the network device and the terminal device is taken as an example for description.
  • FIG. 2 is a flowchart of a method for transmitting time information according to an embodiment of the present disclosure. As shown in FIG. 2, the method may include:
  • the network device generates first information.
  • the first information is used to indicate time information of the first reference point.
  • the first reference point refers to a time reference point corresponding to a time domain position at which the first information is transmitted. It can be understood that the first reference point is a boundary of a time unit corresponding to a time domain position at which the first information is transmitted.
  • the time unit corresponding to the time domain location of the first information is a time unit in which the time domain location of the first information is initially transmitted.
  • the first reference point is the boundary of the time unit in which the time domain location of the first information is first transmitted.
  • the boundary of the time unit may be the left boundary of the time unit or the right boundary of the time unit, and the boundary of the time unit is the left boundary of the time unit or the right boundary of the time unit may be preset, which is not limited in this embodiment of the present application.
  • FIG. 3 is a schematic diagram of a first reference point according to an embodiment of the present application.
  • the time unit in which the time domain location of the first information is first sent may be understood as the time when the first information is sent for the first time in the preset time period.
  • the time unit in which the domain location is located may be a system message window, a system message transmission period, or a system message change period.
  • the system message window, the sending period of the system message, or the change period of the system message is pre-configured by the network device.
  • the preset time period may also be a predefined time window.
  • the length of the predefined time window may be 5.12 seconds or 10.24 seconds.
  • the time unit in which the time domain location of the first information is first sent may be understood as the first The time unit in which the time domain position of the first information is transmitted for the first time in the search space period or the discontinuous reception period corresponding to the information.
  • the time unit in which the time domain position of the first information is transmitted for the first time in the preset time period can also be considered.
  • the first reference point is a boundary of the Sth time unit before or after the time unit corresponding to the time domain position of the first information, and S is a positive integer greater than or equal to 1.
  • the time unit corresponding to the time domain position in which the first information is transmitted is the second time unit
  • the first reference point is the boundary of the first time unit before the second time unit, that is, the map.
  • the boundary of the first time unit shown in 4, or the first reference point is the boundary of the second time unit after the second time unit, that is, the boundary of the fourth time unit shown in FIG.
  • the rule that the first reference point corresponds to the time domain location that sends the first information may be predefined, so that the first reference point determined by the terminal device according to the predefined rule is the same as the first reference point determined by the network device.
  • the network device is not required to notify the terminal device of the first reference point by using a signaling message, which saves the overhead of signaling resources.
  • the signaling of the non-system message sent by the network device to the terminal device may be received by the terminal device due to factors such as signal quality.
  • the terminal device receives a physical downlink control channel (PDCCH) for scheduling the first message that is initially transmitted.
  • the network device needs to retransmit the first information to the terminal device, such as retransmission by a hybrid automatic repeat request (HARQ) technology.
  • HARQ hybrid automatic repeat request
  • the first information itself generally does not change.
  • the terminal device determines that the first reference point is the boundary of the time unit corresponding to the time domain position of the first information.
  • the boundary of the time unit corresponding to the time domain position of the first transmission of the first information or the time unit corresponding to the time domain position of the repeated transmission of the first information For example, the initial transmission and the retransmission span the boundary of one time unit, that is, the initial transmission is in the last time unit, and the retransmission is in the next time unit. Assuming that the first reference point indicates the left boundary of the time unit in which the initial transmission data is located, when the terminal device fails to receive the initial transmission time unit and the time unit for receiving the retransmission succeeds, the terminal device does not know which time unit was originally transmitted.
  • the terminal device does not receive the PDCCH for scheduling the first information of the initial transmission; at this time, the terminal device receives the successful retransmission information in the next time unit, but does not know that the corresponding initial transmission information is in the same
  • a time unit is also the previous time unit of the time unit in which it was retransmitted.
  • the scheduling information needs to be sent to the terminal device.
  • the first reference point may be made to correspond to the content in the DCI for scheduling the first information.
  • the indication information may be included in the DCI used by the network device to send the first information to the terminal device.
  • the indication information is used to indicate boundary information of the time unit and/or the time unit.
  • the DCI includes 1 bit, and when the bit is 1, it indicates that the first reference point is the boundary of the previous time unit of the time unit in which the time domain position of the first information is transmitted or the boundary of the next time unit. When the bit is 0, it indicates that the first reference point is the boundary of the time unit in which the time domain position of the first information is transmitted. Or, when the bit is 0, indicating that the first reference point is a boundary of a previous time unit of a time unit in which the time domain position of the first information is transmitted or a boundary of a subsequent time unit; when the bit is 1 , indicating that the first reference point is a boundary of a time unit in which the time domain location of the first information is transmitted.
  • the boundary of the time unit may be the left boundary of the time unit or the right boundary of the time unit, and the boundary of the time unit is the left boundary of the time unit or the right boundary of the time unit may be preset.
  • the DCI further includes 1 bit for indicating boundary information of a time unit determined according to the indication information included in the DCI. When the bit is 1, it indicates the left boundary of the time unit determined according to the indication information included in the DCI; when the bit is 0, it indicates the right boundary of the time unit determined according to the indication information included in the DCI.
  • the bit when the bit is 0, it indicates the left boundary of the time unit determined according to the indication information included in the DCI; when the bit is 1, it indicates the right boundary of the time unit determined according to the indication information included in the DCI.
  • the two bits included in the DCI may belong to the same field or to different domains.
  • the time unit may be determined according to a preset rule, where the preset rule may be a time unit corresponding to a time domain location for transmitting the first information.
  • the time unit corresponding to the time domain position at which the first information is transmitted may be understood as the time unit in which the time domain position of the first information is transmitted or the time S before or after the time unit corresponding to the time domain position in which the first information is transmitted. Time units. For a detailed explanation, reference may be made to the description of the foregoing embodiments, and details are not described herein again.
  • the boundary information of the time unit can be implemented by indicating the bit included in the DCI.
  • the DCI may include 1 bit, which is used to indicate the boundary of the time unit determined according to the preset rule.
  • the bit When the bit is 1, it indicates the left boundary of the time unit determined according to the preset rule; when the bit is 0, it indicates the right boundary of the time unit determined according to the preset rule.
  • the terminal device determines the time domain location of the first reference point together with the indication information in the DCI for scheduling the first information and the time domain location of the first information, where the time domain location of the first information is the first scheduled by the PDCCH.
  • the time domain location of the PDSCH of the information When the bit is 1, it indicates the left boundary of the time unit determined according to the preset rule; when the bit is 0, it indicates the right boundary of the time unit determined according to the preset rule.
  • the terminal device determines the time domain location of the first reference point together with the indication information in the DCI for scheduling the first information and the time domain location of the first information, where the time domain location of the first information is the first scheduled by the PDCCH.
  • the first reference point may correspond to the information content in the first information, except that the first reference point may be pre-defined with a default rule corresponding to the time domain position at which the first information is transmitted.
  • the first information includes indication information, and the indication information included in the first information may be used to indicate information of a time unit.
  • the information of the time unit may refer to an index of the time unit, such as when the time unit is a wireless frame, the information of the time unit may be a wireless frame number or the like.
  • the boundary information of the time unit may be the left boundary of the time unit or the right boundary of the time unit.
  • the boundary information of the time unit may be pre-agreed, or may be the boundary information carrying the time unit in the indication information included in the first information, or the boundary information carrying the time unit included in the indication information included in the DCI for scheduling the first information. information.
  • the terminal device can determine the time domain location of the first reference point according to the indication information included in the first information and the time domain location of the first information.
  • the terminal device may determine the time domain location of the first reference point according to the indication information included in the DCI for scheduling the first information, the indication information included in the first information, and the time domain location of the first information.
  • the time unit in which the first reference point is located may also be determined in combination with a preset rule.
  • the rule for confirming the time unit in which the first reference point is located may be: the confirmed time unit needs to satisfy the condition 1 and the condition 2, wherein the condition 1 is The index number of the confirmed time unit is the same as the index number indicated by the indication information included in the first information, and the condition 2 is that the time distance between the confirmed time unit and the time unit in which the time domain position of the first information is transmitted is at all The time unit that satisfies Condition 1 is the most recent.
  • the rule for confirming the time unit in which the first reference point is located may also be: the confirmed time unit is the time unit in which the time domain position of the first information is sent, and the Ath index number is the indication included in the first information.
  • the time unit of the time unit index indicated by the information, A is a predetermined positive integer.
  • the rule for confirming the time unit where the first reference point is located may also be: the confirmed time unit is the time unit in which the time domain position of the first information is sent, and the B index number is the indication included in the first information.
  • the time unit of the time unit index indicated by the information, B is a predetermined positive integer.
  • time units may be different.
  • the time unit can be a symbol, a time slot, a subframe, a radio frame, or a superframe.
  • it can also be other predefined time periods.
  • the time information of the first reference point in the embodiment of the present application may be time information of the first reference point under the universal clock.
  • the general purpose clock may be at least one of a coordinated universal time (UTC) clock, a world clock, a global positioning system (GPS) clock, an international clock, and a local clock. It can also be other common clocks.
  • the so-called public clock refers to the clock that can be obtained by any individual and organization, and is unique, that is, the time of the common clock acquired by different individuals and organizations is the same.
  • the network device After determining the first reference point, the network device needs to generate time information of the first reference point.
  • the time reference point may be quantized to generate time information of the first reference point.
  • the UTC time point of the reference time point is T c
  • T c can also be understood as the start time.
  • the UTC time of the target time point (the time point information to be transmitted) is T m .
  • T m can also be understood as the time of the first reference point
  • the first information indicates that the granularity is ⁇ T 1
  • the quantized target time point can be or
  • the above time information may not be limited to the above form, and may be rounded, rounded up, etc., for example. However, it can be confirmed that the time information is time information indicating the target time.
  • time information of the first reference point is time information of the first reference point under the universal clock.
  • the time information indicated by the first information is or ⁇ T 1 is the first information indicating granularity, and k 1 is time information of the first reference point.
  • the first information indicating the granularity in the embodiment of the present application may be any time unit less than or equal to 5 milliseconds.
  • the first information indicating granularity may be Q milliseconds (millisecond, ms), Q*100 microseconds (microsecond, us), Q*10 microseconds, Q microseconds, Q*100 nanoseconds (nanosecond, ns), Q. * Any of 10 nanoseconds and Q nanoseconds, where Q is a positive integer.
  • the network device sends the first information to the terminal device.
  • the network device may send the first information to the terminal device by using downlink signaling.
  • Downlink signaling includes RRC signaling, MAC layer signaling, or physical layer signaling.
  • the RRC signaling includes dedicated RRC signaling or system information, which may also be referred to as system messages.
  • the MAC layer signaling may be signaled by a MAC control unit (CE).
  • CE MAC control unit
  • the physical layer signaling may be explicitly or implicitly indicated by the DCI, or may be implicitly indicated by the downlink reference signal.
  • the DCI implicit indication can be understood as a method of scrambling the cyclic redundancy check (CRC) of the DCI using different binary fields or sequences to implement the method of carrying the target information.
  • CRC cyclic redundancy check
  • the downlink reference signal implicit indication may implement the effect of using the reference signal implicit indication by using at least one of the following forms: first, the reference signal is carried on different resources, the resource may refer to a wireless transmission resource, and the wireless transmission resource includes a time resource, At least one of a frequency resource, a code resource, and a space resource; second, generating a reference signal using different generation methods, such as different sequence general expressions.
  • the network device may send downlink signaling to the terminal device in a broadcast manner, that is, send downlink signaling to all terminal devices in a cell.
  • the network device may also send downlink signaling to the terminal device in a multicast mode (group common), that is, send downlink signaling to all terminal devices in a group.
  • the network device may also send downlink signaling to a single terminal device in a unicast manner.
  • the first information may be sent to the terminal device by using a system message. If the network device sends the first information to the terminal device in a unicast manner, the first information may be sent to the terminal device by using at least one of dedicated RRC signaling, MAC layer signaling, and physical layer signaling. The first information is sent to the terminal device in a unicast manner, thereby improving the security of time information transmission, and avoiding tampering or attacking of the time information.
  • the network device may further send information indicating the granularity of the first information indication to the terminal device by using any one of system message, dedicated RRC signaling, MAC layer signaling, and physical layer signaling.
  • the terminal device receives the first information sent by the network device.
  • the first information is used to indicate time information of the first reference point, and the first information indicates that the granularity is less than or equal to 5 milliseconds.
  • the first information indicates that the granularity is less than or equal to 5 milliseconds.
  • the terminal device determines a time of the first reference point according to the first information.
  • the terminal device After receiving the first information sent by the network device, the terminal device first needs to determine the first reference point, and then determines the time of the first reference point according to the first reference point. For the method of determining the first reference point, reference may be made to the detailed description in S201, and the embodiments of the present application are not described herein again.
  • the first reference point may be determined according to a rule that the network device and the terminal device correspond to the first reference point pre-configured according to the protocol and the time domain location that sends the first information. It is also possible to determine the first reference point based on the information corresponding to the information content in the first information according to the first reference point, and/or the first reference point corresponding to the content in the DCI for scheduling the first information.
  • the terminal device may send an application message to the network device, requesting the network device to send the first information to the terminal device.
  • the embodiment of the present application further includes the following steps:
  • the terminal device sends an application message to the network device.
  • the application message is used by the terminal device to apply for the first information to the network device.
  • the network device receives an application message sent by the terminal device.
  • the method for transmitting time information improves the accuracy of the indication granularity of the indication information by reducing the indication granularity of the indication information, and transmits the high-precision time information to the terminal device to facilitate the terminal.
  • the device determines the time according to the high-precision time information, thereby reducing the error between the time determined by the terminal device and the time of the network device, so that the terminal device meets the time synchronization requirement in the industrial communication scenario.
  • the network device sends the first information to the terminal device, and also sends the second information to the terminal device.
  • the time of the first reference point determined by the terminal device according to the second information is different from the time of the first reference point determined by the network device.
  • the network device needs to send the first information to the terminal device, where the first information is used. Adjusting the time of the first reference point determined by the terminal device according to the second information to reduce an error between the time determined by the terminal device and the time of the network device.
  • the embodiment of the present application further includes the following steps:
  • the network device generates second information.
  • the second information is used to indicate time information of the first reference point.
  • the first reference point refers to a time reference point corresponding to a time domain position at which the second information is transmitted.
  • the time information of the first reference point in the embodiment of the present application may be time information of the first reference point under the universal clock. That is to say, the second information at this time may correspond to the first information described in S201.
  • the second information at this time may correspond to the first information described in S201.
  • the value range of a part of the time information of the first reference point indicated by the first information under the universal clock is [-N, 0], [-N, 0), (-N, 0], (-N, 0) , [-N/2, N/2], (-N/2, N/2], (-N/2, N/2), [-N/2, N/2), [0, N] Any of (0,N), [0,N), (0,N), [-N,N], [-N,N), (-N,N], and (-N,N)
  • N is the second information indicating granularity
  • the unit of N may be any time unit such as seconds, milliseconds, microseconds, nanoseconds, etc.
  • N is less than or equal to 10 milliseconds.
  • the symbol “]” means less than or equal to.
  • the symbol “(" means greater than .symbol ")" means less than.
  • the above [-N, 0] represents any real number greater than or equal to -N and less than or equal to 0.
  • [-N , 0) represents any real number greater than or equal to -N and less than 0.
  • (-N, 0) represents any real number greater than -N and less than or equal to 0.
  • (-N, 0) means greater than -N and less than any real number in 0.
  • [-N/2, N/2] means greater than or equal to -N/2 and less than or equal to any real number in N/2.
  • (-N/2, N/2) means any real number greater than -N/2 and less than or equal to N/2.
  • (-N/2,N/ 2) indicates any real number greater than -N/2 and less than N/2.
  • [-N/2, N/2) represents any real number greater than or equal to -N/2 and less than N/2.
  • [0, N] Any real number greater than or equal to 0 and less than or equal to N. (0, N) represents greater than 0 and less than or equal to any real number in N.
  • [0, N) represents greater than or equal to 0 and less than any real number in N.
  • (0, N) represents greater than 0 and less than any real number in N.
  • [-N, N] represents greater than or equal to -N and less than or equal to any real number in N.
  • [-N, N) represents greater than or equal to -N and less than N Real number.
  • (-N, N) represents greater than -N and less than or equal to any real number in N.
  • (-N, N) represents greater than -N and less than any real number in N.
  • the network device sends the first information and the second information indicating the granularity of the first information to the terminal device, where the first information may be regarded as a compensation information, and is used to indicate the time information of the first reference point indicated by the second information and the network device.
  • the deviation of the time is the compensation for the accuracy of the second information indicating the granularity of the second information.
  • the following is an example of how to generate the first information after generating the second information.
  • the second information indicates a granularity of 10 milliseconds, and the indicated criterion is rounding
  • the first information indicates that the granularity is ⁇ T 1
  • the time information of the first reference point indicated by the second information is or
  • the time information of the first reference point indicated by the first information may be or
  • the formula represents only a feasible method, and the embodiment of the present application does not limit the formula form, for example, it may be rounded up, rounded, or or and many more.
  • the first information is used to indicate the deviation of the target time information from the time value indicated by the second information, or the first information is a portion (or called a decimal number) for indicating that the target time information is within the granularity of the second information indication. Part, etc.).
  • the network device sends the second information to the terminal device.
  • the network device sends the second information to the terminal device by using the system message, that is, the network device sends the second information to the terminal device by using a broadcast manner.
  • the first information is transmitted to the terminal device by the network device through at least one of system information, dedicated RRC signaling, MAC layer signaling, and physical layer signaling.
  • the terminal device receives the second information sent by the network device.
  • the terminal device determines a time of the first reference point according to the first information and the second information.
  • the terminal device After the terminal device receives the first information and the second information sent by the network device, first, determining the time of the first reference point according to the second information, and determining the time of the first reference point according to the second information may refer to the detailed description in S204. The embodiments of the present application are not described herein again. Then, the terminal device determines the time of the first reference point together according to the time of the first reference point determined by the first information and the time of the first reference point determined by the second information.
  • Determining the time of the first reference point together with the time of the first reference point determined by the first information and the time of the first reference point determined by the second information may be understood as the time of the first reference point determined by the first information and the second information determination
  • the time of the first reference point is subjected to an algebraic operation to jointly determine the time of the first reference point, for example, an addition operation or a subtraction operation.
  • the accuracy of the time of the first reference point determined jointly by the time of the first reference point determined according to the first information and the time of the first reference point determined by the second information is better than the time of the first reference point determined according to the second information The accuracy, so the error between the time determined by the terminal device and the time of the network device is reduced.
  • sequence of the steps of the method for transmitting time information may be appropriately adjusted.
  • the sequence between S207 and S201 may be interchanged, that is, the first information may be regenerated to generate the second information, and the network device may first send the first information to the terminal device and send the second information to the terminal device.
  • the sequence between S209 and S203 can also be interchanged, and the terminal device can receive the first information and then receive the second information.
  • the sequence of the first information and the second information in the embodiment of the present application is not limited. Any person skilled in the art can easily think of the change within the technical scope disclosed in the present application, and should cover the protection of the present invention. Within the scope, so I won't go into details.
  • each network element such as a network device and a terminal device, in order to implement the above functions, includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the algorithmic steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the embodiments of the present application may divide the function modules of the network device and the terminal device according to the foregoing method.
  • each function module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 8 shows a communication device according to the above and the embodiments to implement the functions of the network device in the above method embodiment.
  • the communication device may be a network device or a chip of the network device.
  • the communication device may include a processing unit 801 and a transmitting unit 802.
  • the processing unit 801 is configured to support the communication device to execute S201 in the method for transmitting time information shown in FIG. 2, S201 in the method for transmitting time information shown in FIG. 6, and the method for transmitting time information shown in FIG. S201 and S207.
  • the transmitting unit 802 is configured to support the communication device to execute S202 in the method for transmitting time information shown in FIG. 2, S202 in the method for transmitting time information shown in FIG. 6, and in the method for transmitting time information shown in FIG. S202 and S208.
  • the communication device provided by the embodiment of the present application is configured to execute the foregoing method for transmitting time information, so that the same effect as the transmission method of the time information described above can be achieved.
  • FIG. 9 is a schematic structural diagram of a device according to an embodiment of the present application. As shown in FIG. 9, the device may include at least one processor 901, a memory 902, a communication interface 903, and a communication bus 904.
  • the processor 901 is a control center of the device, and may be a processor or a collective name of a plurality of processing elements.
  • the processor 901 is a central processing unit (CPU), may be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • DSPs digital signal processors
  • FPGAs field programmable gate arrays
  • the processor 901 can perform various functions of the device by running or executing a software program stored in the memory 902 and calling data stored in the memory 902.
  • processor 901 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG.
  • the processor of the embodiment of the present application is configured to generate first information, where the first information is used to indicate time information of the first reference point, and the first information indicates that the granularity is less than or equal to 5 milliseconds.
  • the device may include multiple processors, such as processor 901 and processor 905 shown in FIG. Each of these processors can be a single core processor or a multi-core processor.
  • the memory 902 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory 902 can exist independently and be coupled to the processor 901 via a communication bus 904.
  • the memory 902 can also be integrated with the processor 901.
  • the memory 902 is configured to store a software program that executes the solution of the present application, and is controlled by the processor 901 for execution.
  • the communication interface 903 is configured to communicate with other devices or communication networks, such as an Ethernet, a radio access network (RAN), a wireless local area network (WLAN), and the like.
  • the communication interface 903 may include a receiving unit that implements a receiving function, and a transmitting unit that implements a transmitting function.
  • the communication interface described in this embodiment is mainly used to send the first information to the terminal device.
  • the communication bus 904 may be an industry standard architecture (ISA) bus, a peripheral component interconnect (PCI) bus, or an extended industry standard architecture (EISA) bus.
  • ISA industry standard architecture
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9, but it does not mean that there is only one bus or one type of bus.
  • the device structure illustrated in Figure 9 does not constitute a limitation to the device, and may include more or fewer components than those illustrated, or some components may be combined, or different component arrangements.
  • FIG. 10 shows another communication device involved in the above embodiment to implement the functions of the network device in the above method embodiment.
  • the communication device may be a network device or a chip of the network device.
  • the communication device includes a processing module 1001 and a communication module 1002.
  • the processing module 1001 is configured to control and manage the action of the communication device.
  • the processing module 1001 is configured to support the communication device to execute S201 in the method for transmitting time information shown in FIG. 2, and the method for transmitting time information shown in FIG. S201, S201 and S207 in the method of transmitting time information shown in FIG. 7, and/or other processes for the techniques described herein.
  • Communication module 1002 is for supporting communication of communication devices with other network entities, such as with the functional modules or network entities shown in FIG.
  • the communication device can also include a storage module 1003 for storing program code and data of the communication device.
  • the processing module 1001 can be a processor or a controller. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor can also be a combination of computing functions.
  • the communication module 1002 can be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 1003 can be a memory.
  • the processing module 1001 is a processor
  • the communication module 1002 is a communication interface
  • the storage module 1003 is a memory
  • the communication device according to the embodiment of the present application may be the device shown in FIG.
  • FIG. 11 shows still another communication device involved in the above embodiments and embodiments for implementing the functions of the terminal device in the above method embodiment.
  • the communication device may be a terminal device or a chip of the terminal device.
  • the communication device may include a receiving unit 1101 and a processing unit 1102.
  • the receiving unit 1101 is configured to support the communication device to execute S203 in the method for transmitting time information shown in FIG. 2, S203 in the method for transmitting time information shown in FIG. 6, and the method for transmitting time information shown in FIG. S203 and S209.
  • the processing unit 1102 is configured to support the communication device to execute S204 in the method for transmitting time information shown in FIG. 2, S204 in the method for transmitting time information shown in FIG. 6, and in the method for transmitting time information shown in FIG. S204a.
  • the communication device provided by the embodiment of the present application is configured to execute the foregoing method for transmitting time information, so that the same effect as the transmission method of the time information described above can be achieved.
  • FIG. 12 shows still another communication device involved in the above embodiment to implement the functions of the network device in the above method embodiment.
  • the communication device may be a network device or a chip of the network device.
  • the communication device includes a processing module 1201 and a communication module 1202.
  • the processing module 1201 is configured to control and manage the action of the communication device.
  • the processing module 1201 is configured to support the communication device to execute S204 in the method for transmitting time information shown in FIG. 2, and the method for transmitting time information shown in FIG. S204, S204a in the method of transmitting time information shown in FIG. 7, and/or other processes for the techniques described herein.
  • Communication module 1202 is for supporting communication of communication devices with other network entities, such as with the functional modules or network entities shown in FIG.
  • the communication device can also include a storage module 1203 for storing program code and data of the communication device.
  • the processing module 1201 can be a processor or a controller. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor can also be a combination of computing functions.
  • the communication module 1202 can be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 1203 may be a memory.
  • the processing module 1201 is a processor
  • the communication module 1202 is a transceiver
  • the storage module 1203 is a memory
  • the communication device according to the embodiment of the present application may be the device shown in FIG.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used.
  • the combination may be integrated into another device, or some features may be ignored or not performed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a readable storage medium.
  • the technical solution of the embodiments of the present application may be embodied in the form of a software product in the form of a software product in essence or in the form of a contribution to the prior art, and the software product is stored in a storage medium.
  • a number of instructions are included to cause a device (which may be a microcontroller, chip, etc.) or processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory, a random access memory, a magnetic disk, or an optical disk.

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Abstract

本申请实施例公开了一种时间信息的传输方法及装置，涉及无线通信领域，解决了终端设备确定的时间与网络设备的时间的误差较大的问题。具体方案为：生成并发送指示粒度小于或等于5毫秒的第一信息，该第一信息用于指示第一参考点的时间信息。本申请实施例用于终端设备与网络设备之间的时间同步过程。

Description

一种时间信息的传输方法及装置
本申请要求于2018年02月13日提交中国专利局、申请号为201810150956.8、申请名称为“一种时间信息的传输方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及无线通信领域，尤其涉及一种时间信息的传输方法及装置。
背景技术
随着移动通信技术的发展，第五代(the fifth generation，5G)移动通信技术已成为全球研发的热点。移动互联网和物联网作为未来通信发展的主要驱动力，将在人们的居住、工作、休闲和交通等领域产生巨大影响，5G业务需求呈现多样化。例如，在工业控制场景中，控制器需要和执行器之间保持时间同步。控制器给执行器发送控制信令，指示执行器在确定的时间执行命令，若执行器与控制器对时间的认知不同，即时间不同步，会导致执行器在错误的时间执行命令，导致任务执行失败。在智能电网场景中，作为终端设备被部署在电力线上的相位测量模块(phase measurement unit，PMU)，用于感知电力信息的变化，例如电压，电流的变化等。每个PMU需要保持时间同步，以便于确定故障点。如果PMU之间对时间的认知不同，则会导致无法准确的确定故障点位置。
在现有技术中，网络设备作为终端设备的集中控制器，可以作为终端设备的时间同步源，向终端设备发送指示信息，使小区内所有的终端设备均与网络设备保持时间同步，间接的达到终端设备之间的时间同步。但是，在某些工业通信场景下，需要终端设备之间保持微秒级别的同步。如果终端设备根据现有技术确定时间，由于指示信息的指示粒度较大，导致终端设备根据指示信息确定的时间与网络设备的时间的误差较大，因此，现有技术中的终端设备无法达到工业通信场景下时间同步的要求。
发明内容
本申请实施例提供一种时间信息的传输方法及装置，解决了终端设备确定的时间与网络设备的时间的误差较大的问题。
为达到上述目的，本申请实施例采用如下技术方案：
本申请实施例的第一方面，提供一种时间信息的传输方法，方法包括：首先，生成并发送指示粒度小于或等于5毫秒的第一信息，该第一信息用于指示第一参考点的时间信息。发送第一信息的发送实体可以是网络设备，也可以是网络设备的芯片。接收第一信息的接收实体可以是终端设备，也可以是终端设备的芯片。本申请实施例提供的时间信息的传输方法，通过减小指示信息的指示粒度，相对于现有技术提高了指示信息的指示粒度的精度，将高精度的时间信息传输给接收实体，以便于接收实体根据高精度的时间信息确定时间，从而，减小接收实体确定的时间与发送实体的时间之间的误差，使接收实体达到工业通信场景下时间同步的要求。
结合第一方面，在一种可能的实现方式中，第一信息用于指示第一参考点的时间信息，包括：第一信息用于指示第一参考点在通用时钟下的时间信息，或者，第一信息用于指示第一参考点在通用时钟下的时间信息的一部分。
结合第一方面或上述可能的实现方式，在另一种可能的实现方式中，发送第一信息，包括：通过系统消息发送第一信息，或者，通过专用无线资源控制(radio resource control，RRC)信令、媒体接入控制(medium access control，MAC)层信令和物理层信令中的至少一项发送第一信息，从而，通过单播方式发送第一信息，提高了时间信息传输的安全性，避免时间信息被随意篡改或攻击等。
结合第一方面或上述可能的实现方式，在另一种可能的实现方式中，第一参考点为初次发送第一信息的时域位置所对应的时间单元的边界。
结合第一方面或上述可能的实现方式，在另一种可能的实现方式中，第一参考点与第一信息中的信息内容对应，和/或，第一参考点与用于调度第一信息的下行控制信息(downlink control information，DCI)中的内容对应。
结合第一方面或上述可能的实现方式，在另一种可能的实现方式中，第一信息的时域位置所对应的时间单元为第一信息的时域位置所处的时间单元，或者，第一信息的时域位置所对应的时间单元为第一信息对应的DCI中指示的时间单元。
结合第一方面或上述可能的实现方式，在另一种可能的实现方式中，第一信息用于指示第一参考点在通用时钟下的时间信息的一部分，方法还包括：通过系统消息发送第二信息，第二信息用于指示第一参考点的时间信息，第二信息指示粒度大于第一信息指示粒度；第一信息指示的第一参考点在通用时钟下的时间信息的一部分的取值范围是[-N,0]、[-N,0)、(-N,0]、(-N,0)、[-N/2,N/2]、(-N/2,N/2]、(-N/2,N/2)、[-N/2,N/2)、[0,N]、(0,N]、[0,N)和(0,N)中的任一种，其中，N为第二信息指示粒度。
结合第一方面或上述可能的实现方式，在另一种可能的实现方式中，通过系统消息、专用RRC信令、MAC层信令和物理层信令中任一项发送用于指示第一信息指示粒度的信息。
结合第一方面或上述可能的实现方式，在另一种可能的实现方式中，若通过系统消息发送第一信息，则时间单元是符号、时隙、子帧、无线帧、超帧、系统消息窗、系统消息周期和系统消息变更周期中任一种；若通过专用RRC信令、MAC层信令和物理层信令中的至少一项发送第一信息，则时间单元是符号、时隙、子帧、无线帧、超帧、搜索空间周期和非连续接收周期中任一种。
结合第一方面或上述可能的实现方式，在另一种可能的实现方式中，在发送第一信息之前，方法还包括：接收申请消息，申请消息用于申请第一信息。
本申请实施例的第二方面，提供一种时间信息的传输方法，包括：接收指示粒度小于或等于5毫秒的第一信息，第一信息用于指示第一参考点的时间信息；根据第一信息确定第一参考点的时间。接收第一信息的接收实体可以是终端设备，也可以是终端设备的芯片。发送第一信息的发送实体可以是网络设备，也可以是网络设备的芯片。本申请实施例提供的时间信息的传输方法，通过减小指示信息的指示粒度，相对于现有技术提高了指示信息的指示粒度的精度，将高精度的时间信息传输给接收实体，使得接收实体根据高精度的时间信息确定时间，从而，减小接收实体确定的时间与发送 实体的时间之间的误差，使接收实体达到工业通信场景下时间同步的要求。
结合第二方面，在一种可能的实现方式中，第一信息用于指示第一参考点的时间信息，包括：第一信息用于指示第一参考点在通用时钟下的时间信息，或者，第一信息用于指示第一参考点在通用时钟下的时间信息的一部分。
结合第二方面或上述可能的实现方式，在另一种可能的实现方式中，接收第一信息，包括：通过系统消息接收第一信息，或者，通过专用RRC信令、MAC层信令和物理层信令中的至少一项接收第一信息。
结合第二方面或上述可能的实现方式，在另一种可能的实现方式中，第一参考点为初次发送第一信息的时域位置所对应的时间单元的边界。
结合第二方面或上述可能的实现方式，在另一种可能的实现方式中，第一参考点与第一信息中的信息内容对应，和/或，第一参考点与用于调度第一信息的DCI中的内容对应。
结合第二方面或上述可能的实现方式，在另一种可能的实现方式中，第一信息用于指示第一参考点在通用时钟下的时间信息的一部分，方法还包括：通过系统消息接收第二信息，第二信息用于指示第一参考点的时间信息，第二信息指示粒度大于第一信息指示粒度；第一信息指示的第一参考点在通用时钟下的时间信息的一部分的取值范围是[-N,0]、[-N,0)、(-N,0]、(-N,0)、[-N/2,N/2]、(-N/2,N/2]、(-N/2,N/2)、[-N/2,N/2)、[0,N]、(0,N]、[0,N)和(0,N)、中的任一种，其中，N为第二信息指示粒度。
结合上述可能的实现方式，在另一种可能的实现方式中，根据第一信息确定第一参考点的时间，包括：根据第一信息和第二信息确定第一参考点的时间。
结合第二方面或上述可能的实现方式，在另一种可能的实现方式中，方法还包括：通过系统消息、专用RRC信令、MAC层信令和物理层信令中任一项接收用于指示第一信息指示粒度的信息。
结合第二方面或上述可能的实现方式，在另一种可能的实现方式中，在接收第一信息之前，方法还包括：发送申请消息，申请消息用于申请第一信息。
本申请实施例的第三方面，提供一种无线通信装置，无线通信装置为网络设备或网络设备的芯片，包括：处理单元，用于生成第一信息，第一信息用于指示第一参考点的时间信息，第一信息指示粒度小于或等于5毫秒；发送单元，用于发送第一信息。
本申请实施例的第四方面，提供一种无线通信装置，无线通信装置为终端设备或终端设备的芯片，包括：接收单元，用于接收第一信息，第一信息用于指示第一参考点的时间信息，第一信息指示粒度小于或等于5毫秒；处理单元，用于根据第一信息确定第一参考点的时间。
需要说明的是，上述第三方面和第四方面的功能模块可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。例如，收发器，用于完成接收单元和发送单元的功能，处理器，用于完成处理单元的功能，存储器，用于处理器处理本申请实施例的时间信息的传输方法的程序指令。处理器、收发器和存储器通过总线连接并完成相互间的通信。具体的，可以参考第一方面提供的时间信息的传输方法中发送实体的行为的功能和第二方面提供的时间信息的传输方法中接收实体的行为的功能。
本申请实施例的第五方面，提供一种无线通信装置，包括：处理器、存储器、总线和通信接口；该存储器用于存储计算机执行指令，该处理器与该存储器通过该总线连接，当该处理器运行时，该处理器执行该存储器存储的该计算机执行指令，以使该无线通信装置执行如上述任意方面的方法。
本申请实施例的第六方面，提供一种计算机可读存储介质，包括：计算机软件指令；当计算机软件指令在无线通信装置中运行时，使得网络设备执行上述任意方面的时间信息的传输方法。
本申请实施例的第七方面，提供一种包含指令的计算机程序产品，当计算机程序产品在无线通信装置中运行时，使得无线通信装置执行上述任意方面的时间信息的传输方法。
另外，上述任意方面的设计方式所带来的技术效果可参见第一方面中不同设计方式所带来的技术效果，此处不再赘述。
本申请实施例中，无线通信装置、网络设备和终端设备的名字对设备本身不构成限定，在实际实现中，这些设备可以以其他名称出现。只要各个设备的功能和本申请实施例类似，属于本申请权利要求及其等同技术的范围之内。
附图说明
图1为本申请实施例提供的一种系统架构的简化示意图；
图2为本申请实施例提供的一种时间信息的传输方法的流程图；
图3为本申请实施例提供的一种第一参考点示意图；
图4为本申请实施例提供的另一种第一参考点示意图；
图5为本申请实施例提供的又一种第一参考点示意图；
图6为本申请实施例提供的另一种时间信息的传输方法的流程图；
图7为本申请实施例提供的又一种时间信息的传输方法的流程图；
图8为本申请实施例提供的一种通信装置的组成示意图；
图9为本申请实施例提供的一种设备的组成示意图；
图10为本申请实施例提供的另一种通信装置的组成示意图；
图11为本申请实施例提供的又一种通信装置的组成示意图；
图12为本申请实施例提供的再一种通信装置的组成示意图。
具体实施方式
下面将结合附图对本申请实施例的实施方式进行详细描述。
图1示出的是可以应用本申请实施例的系统架构的简化示意图。如图1所示，该系统可以包括：网络设备11和至少一个终端设备12。每个终端设备12采用无线通信技术与网络设备11进行无线通信。无线通信技术可以是第四代(the fourth generation，4G)无线通信技术或第五代(the fifth generation，5G)移动通信技术。
其中，网络设备可以作为终端设备的时间同步源，使终端设备根据本申请实施例所述的时间信息传输方法与网络设备保持时间同步。网络设备可以是无线通信的基站(base station，BS)或基站控制器等。也可以称为收发站，中继站，发送接收点(transmission reception point，TRP)等等。具体的，网络设备是一种部署在无线接入网中用以为终端设备12提供无线接入功能的装置，其功能可以包括如下一个或多个功 能：进行无线资源的管理、寻呼消息的组织和发送、广播消息的组织和发送、以移动性或调度为目的的测量及测量报告的配置等等。在采用不同的无线接入技术的系统中，具备网络设备功能的设备的名称可能会有所不同，例如，在3G系统中，称为基站(Node B)；在4G系统中，称为演进型基站(evolved NodeB，eNodeB)；在5G系统中，称为下一代基站(next generation NodeB，gNB)；在无线本地接入系统中，称为接入点(access point)。随着通信技术的演进，网络设备的名称可能会变化。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。
终端设备也可以称为终端(terminal)、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等。终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
另外，在本申请实施例中，“示例的”、或者“比如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例”或“比如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例的”、或者“比如”等词旨在以具体方式呈现概念。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
需要说明的是，本申请中的“连接”是指可以相互通信，具体可以通过有线方式连接，也可以通过无线方式连接，本申请实施例对此不作具体限定。其中，相互连接的设备之间可能是直连，也可能是通过其它设备连接，本申请实施例对此不作具体限定。
为了解决终端设备进行时间同步后误差较大的问题，本申请实施例提供一种时间信息的传输方法，其基本原理是：发送实体生成并发送指示粒度小于或等于5毫秒的第一信息，该第一信息用于指示第一参考点的时间信息，接收实体接收指示粒度小于或等于5毫秒的第一信息后，根据第一信息确定第一参考点的时间。发送第一信息的发送实体可以是网络设备，也可以是网络设备的芯片。接收第一信息的接收实体可以是终端设备，也可以是终端设备的芯片。本申请实施例提供的时间信息的传输方法，通过减小指示信息的指示粒度，相对于现有技术提高了指示信息的指示粒度的精度，将高精度的时间信息传输给接收实体，使得接收实体根据高精度的时间信息确定时间，从而，减小接收实体确定的时间与发送实体的时间之间的误差，使接收实体达到工业通信场景下时间同步的要求。
下面为了方便理解，本申请实施例假设发送实体是网络设备，接收实体是终端设 备。以网络设备和终端设备之间的通信为例进行描述。
图2为本申请实施例提供的一种时间信息的传输方法的流程图，如图2所示，该方法可以包括：
S201、网络设备生成第一信息。
第一信息用于指示第一参考点的时间信息。第一参考点是指时间参考点，与发送第一信息的时域位置对应。可理解的，第一参考点为发送第一信息的时域位置所对应的时间单元的边界。
在一种可实现方式中，第一信息的时域位置所对应的时间单元为初次发送第一信息的时域位置所处的时间单元。第一参考点是初次发送第一信息的时域位置所处的时间单元的边界。所谓时间单元的边界可以是时间单元的左边界也可以是时间单元的右边界，时间单元的边界是时间单元的左边界还是时间单元的右边界可以预先设定，本申请实施例对此不作限定。图3为本申请实施例提供的一种第一参考点示意图。
需要说明的是，若网络设备通过系统消息向终端设备发送第一信息，初次发送第一信息的时域位置所处的时间单元可以理解为在预设时段内第一次发送第一信息的时域位置所处的时间单元，预设时段可以是系统消息窗、系统消息的发送周期或系统消息的变更周期等。系统消息窗、系统消息的发送周期或系统消息的变更周期是网络设备预先配置的。当然，预设时段也可以是预先定义的时间窗，比如，预先定义的时间窗的长度可以是5.12秒或10.24秒等。
若网络设备通过专用RRC信令、MAC层信令和物理层信令中至少一项向终端设备发送第一信息，初次发送第一信息的时域位置所处的时间单元可以理解为在第一信息对应的搜索空间周期或非连续接收周期内第一次发送第一信息的时域位置所处的时间单元。当然，也可以认为在预设时段内第一次发送第一信息的时域位置所处的时间单元。
在另一种可实现方式中，第一参考点为相对发送第一信息的时域位置所对应的时间单元之前或之后的第S个时间单元的边界，S为大于或等于1的正整数。如图4所示，假设发送第一信息的时域位置所对应的时间单元为第二个时间单元，第一参考点为相对第二个时间单元之前的第一个时间单元的边界，即图4中所示的第一个时间单元的边界，或，第一参考点为相对第二个时间单元之后的第二个时间单元的边界，即图4中所示的第四个时间单元的边界。需要说明的是，相邻的时间单元之间可以有间隔也可以没有间隔。例如，如图4所示的相邻的时间单元之间是有间隔的，本申请实施例对此不作限定。
另外，上述第一参考点与发送第一信息的时域位置对应的规则可以是预先定义的，从而，终端设备根据预先定义的规则确定的第一参考点与网络设备确定的第一参考点相同，无需网络设备通过信令消息告知终端设备第一参考点，节省了信令资源的开销。
但是，网络设备向终端设备发送的非系统消息的信令(如专用RRC信令、MAC信令、物理层信令等)等，由于信号质量等因素影响，终端设备可能会接收失败。例如，终端设备接收用来调度初传的第一消息的物理下行控制信道(physical downlink control channel，PDCCH)失败。此时，网络设备需要向终端设备重新传输第一信息，如通过混合自动重传请求(hybrid automatic repeat request，HARQ)技术进行重传。而 在重传的时候，第一信息本身一般不会发生变化，但是终端设备收到第一信息后，不确定第一参考点是发送第一信息的哪个时域位置所对应的时间单元的边界，即是初次发送第一信息的时域位置所对应的时间单元的边界还是重复传输第一信息的时域位置所对应的时间单元的边界。例如，初传和重传跨越了一个时间单元的边界，即初传在上一个时间单元内，而重传在下一个时间单元内。假设第一参考点表示初传数据所在的时间单元的左边界，则当终端设备接收初传的时间单元失败且接收重传的时间单元成功后，终端设备并不知道初传在哪个时间单元，因为终端设备没有收到用来调度初传的第一信息的PDCCH；此时，终端设备在后一个时间单元内接收成功重传信息，但不知道其对应的初传信息是在跟重传同一个的时间单元还是重传所在时间单元的前一个时间单元等。
网络设备向终端设备发送第一信息之前，需要向终端设备发送调度信息。为了避免重传引起的第一参考点模糊，可以使第一参考点与用于调度第一信息的DCI中的内容对应。示例的，如图5所示，可以在网络设备向终端设备发送的用于调度第一信息的DCI中包括指示信息。指示信息用于指示时间单元和/或时间单元的边界信息。
示例的，DCI包括1个比特位，当该比特位为1时，表示第一参考点为发送第一信息的时域位置所处的时间单元前一个时间单元的边界或后一个时间单元的边界；当该比特位为0时，表示第一参考点为发送第一信息的时域位置所处的时间单元的边界。或者，当该比特位为0时，表示第一参考点为发送第一信息的时域位置所处的时间单元前一个时间单元的边界或后一个时间单元的边界；当该比特位为1时，表示第一参考点为发送第一信息的时域位置所处的时间单元的边界。需要说明的是，时间单元的边界可以是时间单元的左边界或时间单元的右边界，时间单元的边界是时间单元的左边界还是时间单元的右边界可以预先设定。当然，还可以是在指示信息中携带时间单元的边界信息。例如，DCI还包括1个比特位，该比特位用于指示根据DCI中包括的指示信息确定的时间单元的边界信息。当该比特位为1时，表示根据DCI中包括的指示信息确定的时间单元的左边界；当该比特位为0时，表示根据DCI中包括的指示信息确定的时间单元的右边界。或者，当该比特位为0时，表示根据DCI中包括的指示信息确定的时间单元的左边界；当该比特位为1时，表示根据DCI中包括的指示信息确定的时间单元的右边界。DCI包括的两个比特位可以属于同一个域(field)也可以属于不同的域。
如果指示信息只指示时间单元的边界信息。时间单元可以根据预设规则确定，该预设规则可以是发送第一信息的时域位置所对应的时间单元。发送第一信息的时域位置所对应的时间单元可以理解为发送第一信息的时域位置所处的时间单元或者相对发送第一信息的时域位置所对应的时间单元之前或之后的第S个时间单元。具体的详细解释可以参考上述实施例的阐述，本申请实施例在此不再赘述。时间单元的边界信息可以采用DCI包括的比特位的指示方式来实现。示例的，DCI可以包括1个比特位，该比特位用于指示根据预设规则确定的时间单元的边界。当该比特位为1时，表示根据预设规则确定的时间单元的左边界；当该比特位为0时，表示根据预设规则确定的时间单元的右边界。或者，当该比特位为0时，表示根据预设规则确定的时间单元的左边界；当该比特位为1时，表示根据预设规则确定的时间单元的右边界。从而，终 端设备结合用于调度第一信息的DCI中的指示信息和第一信息的时域位置共同确定第一参考点的时域位置，第一信息的时域位置是PDCCH所调度的第一信息的PDSCH的时域位置。
除了上述第一参考点与发送第一信息的时域位置对应的默认规则可以是预先定义的之外，第一参考点可以与第一信息中的信息内容对应。例如，第一信息中包括指示信息，第一信息中包括的指示信息可以用来指示时间单元的信息。时间单元的信息可以指时间单元的索引，如当时间单元为无线帧时，时间单元的信息可以是无线帧号等。时间单元的边界信息可以是时间单元的左边界或时间单元的右边界。时间单元的边界信息可以预先约定，还可以是在第一信息中包括的指示信息中携带时间单元的边界信息，或者，用于调度第一信息的DCI中包括的指示信息中携带时间单元的边界信息。从而，终端设备可以根据第一信息中包括的指示信息和第一信息的时域位置确定第一参考点的时域位置。或者，终端设备可以根据用于调度第一信息的DCI中包括的指示信息、第一信息中包括的指示信息和第一信息的时域位置确定第一参考点的时域位置。
需要说明的是，当第一信息中包括用于指示时间单元信息的指示信息时，还可以结合预先设定的规则来确定第一参考点所在的时间单元。比如，当第一信息中包括的指示信息指示时间单元的索引时，确认第一参考点所在的时间单元的规则可以是：确认的时间单元需要满足条件1和条件2，其中条件1为，所确认的时间单元的索引号与第一信息中包括的指示信息指示的索引号相同，条件2为，所确认的时间单元与发送第一信息的时域位置所处的时间单元的时间距离在所有满足条件1的时间单元中是最近的。再比如，确认第一参考点所在的时间单元的规则还可以是：确认的时间单元为发送第一信息的时域位置所处的时间单元之后第A个索引号为第一信息中包括的指示信息指示的时间单元索引的时间单元，A为预先设定的正整数。再比如，确认第一参考点所在的时间单元的规则还可以是：确认的时间单元为发送第一信息的时域位置所处的时间单元之前第B个索引号为第一信息中包括的指示信息指示的时间单元索引的时间单元，B为预先设定的正整数。
在不同制式的移动通信系统中，时间单元的概念可能不同。例如，时间单元可以是符号、时隙、子帧、无线帧或超帧。当然，也可以是其他预先定义的时段。
本申请实施例所述的第一参考点的时间信息可以是第一参考点在通用时钟下的时间信息。通用时钟可以为协调世界时(coordinated universal time，UTC)时钟、世界时钟、全球定位系统(global positioning system，GPS)时钟、国际时钟和本地时钟中的至少一种。也可以是其它公共时钟，所谓公共时钟是指任何个人和组织都可以获取到的时钟，且具有唯一性，即不同的个人和组织获取到的该公共时钟的时间是一致的。
网络设备在确定第一参考点后，需要生成第一参考点的时间信息。对于生成第一参考点的时间信息的具体方法可以参考现有技术，本申请实施例对此不作限定。下面通过例子对如何生成第一信息进行举例说明。为了便于数字化传输，可以对时间参考点做量化处理，来生成第一参考点的时间信息。
示例的，假设需要指示1900年1月2日00点00分00秒，此时1900年1月2日00点00分00秒可以认为是第一参考点的时间。如何对1900年1月2日00点00分00秒进行量化，假设以公历1900年1月1日00点00分00秒起始时间，第一信息指示粒度为10毫秒，则1900年1月2日00点00分00秒的时间信息就可以量化为 24*3600*100＝8640000，因为1900年1月2日00点00分00秒相对于1900年1月1日00点00分00秒经过了1天，1天包含的10毫秒的个数即为8640000。以公式的形式来表示即为，假设参考时间点的UTC时间点为T c，T c也可理解为起始时间，目标时间点的UTC时间(想要传输的时间点信息)为T m，T m也可理解为第一参考点的时间，第一信息指示粒度为ΔT 1，则量化后的目标时间点可以为
Figure PCTCN2019074924-appb-000001
或
Figure PCTCN2019074924-appb-000002
上述时间信息可以不限制于上述形式，比如也可以是四舍五入、向上取整等。但是可以确认的是，该时间信息是用来指示目标时间的时间信息。
若第一参考点的时间信息是第一参考点在通用时钟下的时间信息。以公式形式来表示，第一信息所指示的时间信息为
Figure PCTCN2019074924-appb-000003
或
Figure PCTCN2019074924-appb-000004
ΔT 1为第一信息指示粒度，k 1为第一参考点的时间信息。
需要说明的是，本申请实施例所述的第一信息指示粒度可以是小于或等于5毫秒的任意时间单位。例如，第一信息指示粒度可以是Q毫秒(millisecond，ms)、Q*100微秒(microsecond，us)、Q*10微秒、Q微秒、Q*100纳秒(nanosecond，ns)、Q*10纳秒和Q纳秒中任一种，其中，Q是正整数。
S202、网络设备向终端设备发送第一信息。
网络设备可以通过下行信令向终端设备发送第一信息。下行信令包括RRC信令、MAC层信令或物理层信令。RRC信令包括专用RRC信令或系统信息，系统信息也可以称为系统消息。MAC层信令可以MAC控制单元(control element，CE)信令。物理层信令可以通过DCI显式或隐式指示，也可以通过下行参考信号隐式指示。DCI隐式指示可以理解为对DCI的循环冗余校验(cyclic redundancy check，CRC)使用不同的二进制字段或序列进行加扰，以实现携带目标信息的方法。下行参考信号隐式指示可以通过以下至少一种形式实现使用参考信号隐式指示的效果：第一、将参考信号承载在不同的资源上，资源可以指无线传输资源，无线传输资源包括时间资源、频率资源、码资源和空间资源中的至少一种；第二、使用不同生成方法的生成参考信号，比如不同的序列通项表达式等。网络设备可以采用广播方式向终端设备发送下行信令，即向一个小区内的所有终端设备发送下行信令。网络设备还可以采用组播方式(组公共(group common))向终端设备发送下行信令，即向一个组内的所有终端设备发送下行信令。网络设备还可以采用单播方式向单个终端设备发送下行信令。
如果网络设备采用广播方式向终端设备发送第一信息可以通过系统消息向终端设备发送第一信息。如果网络设备采用单播方式向终端设备发送第一信息可以通过专用RRC信令、MAC层信令和物理层信令中的至少一项向终端设备发送第一信息。通过单播方式向终端设备发送第一信息，从而，提高了时间信息传输的安全性，避免时间信息被随意篡改或攻击等。
另外，网络设备还可以通过系统消息、专用RRC信令、MAC层信令和物理层信令中任一项向终端设备发送用于指示第一信息指示粒度的信息。
S203、终端设备接收网络设备发送的第一信息。
第一信息用于指示第一参考点的时间信息，第一信息指示粒度小于或等于5毫秒。对于第一信息的相关解释可以参考S201和S202的详细阐述，本申请实施例在此不再 赘述。
S204、终端设备根据第一信息确定第一参考点的时间。
终端设备接收网络设备发送的第一信息后，首先需要确定第一参考点，然后，根据第一参考点确定第一参考点的时间。确定第一参考点的方法可以参考S201中的详细阐述，本申请实施例在此不再赘述。可以是根据网络设备与终端设备根据协议预先配置的第一参考点与发送第一信息的时域位置对应的规则确定第一参考点。还可以是根据第一参考点与第一信息中的信息内容对应的信息，和/或，第一参考点与用于调度第一信息的DCI中的内容对应的信息确定第一参考点。
可选的，终端设备可以主动向网络设备发送申请消息，请求网络设备向终端设备发送第一信息。如图6所示，在网络设备向终端设备发送第一信息之前，本申请实施例还包括以下步骤：
S205、终端设备向网络设备发送申请消息。
申请消息用于终端设备向网络设备申请第一信息。
S206、网络设备接收终端设备发送的申请消息。
本申请实施例提供的时间信息的传输方法，通过减小指示信息的指示粒度，相对于现有技术提高了指示信息的指示粒度的精度，将高精度的时间信息传输给终端设备，以便于终端设备根据高精度的时间信息确定时间，从而，减小终端设备确定的时间与网络设备的时间之间的误差，使终端设备达到工业通信场景下时间同步的要求。
若第一信息是用于指示第一参考点在通用时钟下的时间信息的一部分。可以理解的，网络设备向终端设备发送了第一信息，还向终端设备发送了第二信息。但是，终端设备根据第二信息确定的第一参考点的时间与实际中网络设备确定的第一参考点的时间存在误差，此时，网络设备需要向终端设备发送第一信息，第一信息用于对终端设备根据第二信息确定的第一参考点的时间进行调整，来减小终端设备确定的时间与网络设备的时间之间的误差。如图7所示，本申请实施例还包括以下步骤：
S207、网络设备生成第二信息。
第二信息用于指示第一参考点的时间信息。第一参考点是指时间参考点，与发送第二信息的时域位置对应。本申请实施例所述的第一参考点的时间信息可以是第一参考点在通用时钟下的时间信息。也就是说，此时第二信息可以相当于S201中的所述的第一信息。第二信息的其他详细解释可以参考S201中的详细阐述，本申请实施例在此不再赘述。
需要说明的是，第二信息指示粒度大于第一信息指示粒度。第一信息指示的第一参考点在通用时钟下的时间信息的一部分的取值范围是[-N,0]、[-N,0)、(-N,0]、(-N,0)、[-N/2,N/2]、(-N/2,N/2]、(-N/2,N/2)、[-N/2,N/2)、[0,N]、(0,N]、[0,N)、(0,N)、[-N,N]、[-N,N)、(-N,N]和(-N,N)中的任一种，其中，N为第二信息指示粒度，N的单位可以是任意时间单位，如秒、毫秒、微秒、纳秒等。例如，N小于等于10毫秒。符号“[”表示大于或等于。符号“]”表示小于或等于。符号“(”表示大于。符号“)”表示小于。例如，上述[-N,0]表示大于或等于-N且小于或等于0中任意实数。[-N,0)表示大于或等于-N且小于0中任意实数。(-N,0]表示大于-N且小于或等于0中任意实数。(-N,0)表示大于-N且小于0中任意实数。[-N/2,N/2]表示大于或等于-N/2且小于或等于N/2 中任意实数。(-N/2,N/2]表示大于-N/2且小于或等于N/2中任意实数。(-N/2,N/2)表示大于-N/2且小于N/2中任意实数。[-N/2,N/2)表示大于或等于-N/2且小于N/2中任意实数。[0,N]表示大于或等于0且小于或等于N中任意实数。(0,N]表示大于0且小于或等于N中任意实数。[0,N)表示大于或等于0且小于N中任意实数。(0,N)表示大于0且小于N中任意实数。[-N,N]表示大于或等于-N且小于或等于N中任意实数。[-N,N)表示大于或等于-N且小于N中任意实数。(-N,N]表示大于-N且小于或等于N中任意实数。(-N,N)表示大于-N且小于N中任意实数。
网络设备向终端设备发送第一信息指示粒度的第一信息和第二信息，其中，第一信息可以认为是一个补偿信息，用于指示第二信息指示的第一参考点的时间信息与网络设备的时间的偏差，是对第二信息指示粒度的第二信息的精度上的补偿。下面通过例子对在生成第二信息之后，如何生成第一信息进行举例说明。
示例的，假设量化后的第一参考点的目标时间信息为15656565635纳秒＝15656565.635微秒＝15656.565635毫秒＝1565.6565635(10毫秒)，第二信息指示粒度为10毫秒，指示的准则为四舍五入，则第二信息所指示的第一参考点的时间信息为1566，表示1566*10毫秒＝15660000000纳秒。但是，第二信息所指示的第一参考点的时间信息与量化后的第一参考点的目标时间信息存在误差，误差为15660000000纳秒-15656565635纳秒＝3434365纳秒。工业通信场景下，终端设备对这个误差是无法接受的，因此，网络设备需要向终端设备发送第一信息指示粒度的第一信息，第一信息携带的时间信息是与量化后的第一参考点的目标时间信息的偏差。假设第一信息指示粒度为100纳秒，指示的准则为四舍五入，则第一信息用于指示一个偏差值为34344*100纳秒，故第一信息携带的数值为34344。这样，终端设备结合第一信息和第二信息，就能得到一个时间信息为1566*10毫秒-34344*100纳秒＝15656565600纳秒。但是，这个值仍旧有误差，误差为15656565600纳秒-15656565635纳秒＝-35纳秒，但是这个误差-35纳秒已经比较小了，能满足工业通信等应用场景的需求。上述举例只是示意性说明，不限制具体的指示方法和计算方法等，实际应用中还可以采用其他方法，本申请实施例在此不作限定。
以公式形式来表示，假设第二信息指示粒度为ΔT 2，第一信息指示粒度为ΔT 1，第二信息所指示的第一参考点的时间信息为
Figure PCTCN2019074924-appb-000005
或
Figure PCTCN2019074924-appb-000006
则第一信息指示的第一参考点的时间信息可以为
Figure PCTCN2019074924-appb-000007
或
Figure PCTCN2019074924-appb-000008
这里，公式所表示的只是一种可行方法，本申请实施例对公式形式不做限定，比如可以是向上取整、四舍五入，也可以是
Figure PCTCN2019074924-appb-000009
或
Figure PCTCN2019074924-appb-000010
等等。总之，第一信息是用于指示目标时间信息与第二信息所指示的时间值的偏差的，或者，第一信息是用于指示目标时间信息在第二信息指示粒度内的部分(或叫做小数部分等等)。
S208、网络设备向终端设备发送第二信息。
网络设备通过系统消息向终端设备发送第二信息，也就是网络设备采用广播方式向终端设备发送第二信息。在网络设备通过系统信息、专用RRC信令、MAC层信令 和物理层信令中的至少一项向终端设备发送第一信息。
S209、终端设备接收网络设备发送的第二信息。
第二信息的相关解释可以参考S207中的详细阐述，本申请实施例在此不再赘述。
S204a、终端设备根据第一信息和第二信息确定第一参考点的时间。
在终端设备接收到网络设备发送的第一信息和第二信息后，首先，根据第二信息确定第一参考点的时间，根据第二信息确定第一参考点的时间可以参考S204中的详细阐述，本申请实施例在此不再赘述。然后，终端设备根据第一信息确定的第一参考点的时间和第二信息确定的第一参考点的时间共同确定第一参考点的时间。第一信息确定的第一参考点的时间和第二信息确定的第一参考点的时间共同确定第一参考点的时间可以理解为第一信息确定的第一参考点的时间和第二信息确定的第一参考点的时间进行代数运算共同确定第一参考点的时间，例如，加法运算或减法运算等。因为根据第一信息确定的第一参考点的时间和第二信息确定的第一参考点的时间共同确定的第一参考点的时间的精度优于根据第二信息确定的第一参考点的时间的精度，所以减小了终端设备确定的时间与网络设备的时间之间的误差。
下面以公式的表示形式进行说明如何根据第一信息和第二信息确定第一参考点的时间。假设终端设备根据第二信息确定的第一参考点的时间为t 2，t 2可以表示为t 2＝k 2×ΔT 2，其中，k 2为第二信息中所指示的时间信息(第二信息所携带的值不一定等于k 2，可以是其它数值，但是该数值与k 2有预先定义的对应关系等)。假设终端设备根据第一信息确定的第一参考点的时间为t 1，t 1可以表示为t 1＝k 1×ΔT 1，其中，k 1为第一信息中所指示的时间信息。假设第一参考点的时间为t 3，终端设备可以判断在第一参考点处的时间为t 3＝t 2+t 1，当然，也可能是t 3＝t 2-t 1，取决于规则的制定。比如，如果将第一信息所携带的时间信息定义为：第一参考点的时间减去终端设备根据第二信息确定的第一参考点的时间，则第一参考点的时间为t 3＝t 2+t 1；如果将第一信息所携带的时间信息定义为：终端设备根据第二信息确定的第一参考点的时间减去第一参考点的时间，则第一参考点的时间为t 3＝t 2-t 1。
需要说明的是，本申请实施例提供的时间信息的传输方法步骤的先后顺序可以进行适当调整。示例的，如S207和S201之间的前后顺序可以互换，即可先生成第一信息再生成第二信息，网络设备可以先向终端设备发送第一信息在向终端设备发送第二信息。同理，如S209和S203之间的前后顺序也可以互换，终端设备可以先接收第一信息再接收第二信息。本申请实施例对第一信息和第二信息的先后顺序不作限定，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本发明的保护范围之内，因此不再赘述。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，各个网元，例如网络设备和终端设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对网络设备和终端设备进行功能模块的划分， 例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在采用对应各个功能划分各个功能模块的情况下，图8示出了上述和实施例中涉及的一种通信装置，用以实现上述方法实施例中网络设备的功能。在本申请的实施例中，该通信装置可以是网络设备，也可以是网络设备的芯片。如图8所示，该通信装置可以包括：处理单元801和发送单元802。
其中，处理单元801，用于支持通信装置执行图2所示的时间信息的传输方法中的S201，图6所示的时间信息的传输方法中的S201，图7所示的时间信息的传输方法中的S201和S207。
发送单元802，用于支持通信装置执行图2所示的时间信息的传输方法中的S202，图6所示的时间信息的传输方法中的S202，图7所示的时间信息的传输方法中的S202和S208。
需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
本申请实施例提供的通信装置，用于执行上述时间信息的传输方法，因此可以达到与上述时间信息的传输方法相同的效果。
图9为本申请实施例提供的一种设备的组成示意图。如图9所示，设备可以包括至少一个处理器901，存储器902、通信接口903和通信总线904。
下面结合图9对设备的各个构成部件进行具体的介绍：
处理器901是设备的控制中心，可以是一个处理器，也可以是多个处理元件的统称。例如，处理器901是一个中央处理器(central processing unit，CPU)，也可以是特定集成电路(application specific integrated circuit，ASIC)，或者是被配置成实施本申请实施例的一个或多个集成电路，例如：一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(field programmable gate array，FPGA)。
其中，处理器901可以通过运行或执行存储在存储器902内的软件程序，以及调用存储在存储器902内的数据，执行设备的各种功能。
在具体的实现中，作为一种实施例，处理器901可以包括一个或多个CPU，例如图9中所示的CPU0和CPU1。
本申请实施例所述的处理器主要用于生成第一信息，第一信息用于指示第一参考点的时间信息，第一信息指示粒度小于或等于5毫秒。
在具体实现中，作为一种实施例，设备可以包括多个处理器，例如图9中所示的处理器901和处理器905。这些处理器中的每一个可以是一个单核处理器，也可以是一个多核处理器。
存储器902可以是只读存储器(Read-Only Memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(Random Access Memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘 (Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器902可以是独立存在，通过通信总线904与处理器901相连接。存储器902也可以和处理器901集成在一起。
其中，所述存储器902用于存储执行本申请方案的软件程序，并由处理器901来控制执行。
通信接口903，用于与其他设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。通信接口903可以包括接收单元实现接收功能，以及发送单元实现发送功能。本申请实施例所述的通信接口主要用于向终端设备发送第一信息。
通信总线904，可以是工业标准体系结构(industry standard architecture，ISA)总线、外部设备互连(peripheral component interconnect，PCI)总线或扩展工业标准体系结构(extended industry standard architecture，EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图9中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
图9中示出的设备结构并不构成对设备的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
在采用集成的单元的情况下，图10示出了上述实施例中所涉及的另一种通信装置，用以实现上述方法实施例中网络设备的功能。在本申请的实施例中，该通信装置可以是网络设备，也可以是网络设备的芯片。如图10所示，该通信装置包括：处理模块1001和通信模块1002。
处理模块1001用于对通信装置的动作进行控制管理，例如，处理模块1001用于支持通信装置执行图2所示的时间信息的传输方法中的S201，图6所示的时间信息的传输方法中的S201，图7所示的时间信息的传输方法中的S201和S207、和/或用于本文所描述的技术的其它过程。通信模块1002用于支持通信装置与其他网络实体的通信，例如与图1中示出的功能模块或网络实体之间的通信。通信装置还可以包括存储模块1003，用于存储通信装置的程序代码和数据。
其中，处理模块1001可以是处理器或控制器。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。处理器也可以是实现计算功能的组合。通信模块1002可以是收发器、收发电路或通信接口等。存储模块1003可以是存储器。
当处理模块1001为处理器，通信模块1002为通信接口，存储模块1003为存储器时，本申请实施例所涉及的通信装置可以为图9所示的设备。
在采用对应各个功能划分各个功能模块的情况下，图11示出了上述和实施例中涉及的又一种通信装置，用以实现上述方法实施例中终端设备的功能。在本申请的实施例中，该通信装置可以是终端设备，也可以是终端设备的芯片。如图11所示，该通信装置可以包括：接收单元1101、处理单元1102。
其中，接收单元1101，用于支持通信装置执行图2所示的时间信息的传输方法中 的S203，图6所示的时间信息的传输方法中的S203，图7所示的时间信息的传输方法中的S203和S209。
处理单元1102，用于支持通信装置执行图2所示的时间信息的传输方法中的S204，图6所示的时间信息的传输方法中的S204，图7所示的时间信息的传输方法中的S204a。
需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
本申请实施例提供的通信装置，用于执行上述时间信息的传输方法，因此可以达到与上述时间信息的传输方法相同的效果。
在采用集成的单元的情况下，图12示出了上述实施例中所涉及的再一种通信装置，用以实现上述方法实施例中网络设备的功能。在本申请的实施例中，该通信装置可以是网络设备，也可以是网络设备的芯片。如图12所示，该通信装置包括：处理模块1201和通信模块1202。
处理模块1201用于对通信装置的动作进行控制管理，例如，处理模块1201用于支持通信装置执行图2所示的时间信息的传输方法中的S204，图6所示的时间信息的传输方法中的S204，图7所示的时间信息的传输方法中的S204a、和/或用于本文所描述的技术的其它过程。通信模块1202用于支持通信装置与其他网络实体的通信，例如与图1中示出的功能模块或网络实体之间的通信。通信装置还可以包括存储模块1203，用于存储通信装置的程序代码和数据。
其中，处理模块1201可以是处理器或控制器。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。处理器也可以是实现计算功能的组合。通信模块1202可以是收发器、收发电路或通信接口等。存储模块1203可以是存储器。
当处理模块1201为处理器，通信模块1202为收发器，存储模块1203为存储器时，本申请实施例所涉及的通信装置可以为图9所示的设备。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个装置，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以 是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该软件产品存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (31)

  1. 一种时间信息的传输方法，其特征在于，包括：
    生成第一信息，所述第一信息用于指示第一参考点的时间信息，所述第一信息指示粒度小于或等于5毫秒，所述第一信息指示粒度为Q*10纳秒，其中，Q为正整数；
    发送所述第一信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信息用于指示第一参考点的时间信息，包括：
    所述第一信息用于指示第一参考点在通用时钟下的时间信息，或者，
    所述第一信息用于指示第一参考点在通用时钟下的时间信息的一部分。
  3. 根据权利要求1或2所述的方法，其特征在于，所述发送所述第一信息，包括：
    通过系统消息发送所述第一信息，或者，
    通过专用无线资源控制RRC信令、媒体接入控制MAC层信令和物理层信令中的至少一项发送所述第一信息。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述第一参考点为发送所述第一信息的时域位置所对应的时间单元的边界。
  5. 根据权利要求4所述的方法，其特征在于，当所述第一信息是通过系统消息发送时，所述第一参考点为预设时段内第一次发送所述第一信息的时域位置所对应的时间单元的边界。
  6. 根据权利要求4或5所述的方法，其特征在于，所述第一信息包括用于指示所述时间单元的索引的指示信息。
  7. 根据权利要求6所述的方法，其特征在于，所述第一参考点所在的时间单元为满足第一条件的第一时间单元中与发送所述第一信息的时间单元最近的时间单元，其中，所述第一条件为：所述第一时间单元的索引号与所述指示信息中指示的索引号相同。
  8. 一种时间信息的传输方法，其特征在于，包括：
    接收第一信息，所述第一信息用于指示第一参考点的时间信息，所述第一信息指示粒度小于或等于5毫秒，所述第一信息指示粒度为Q*10纳秒，其中，Q为正整数；
    根据所述第一信息确定所述第一参考点的时间。
  9. 根据权利要求8所述的方法，其特征在于，所述第一信息用于指示第一参考点的时间信息，包括：
    所述第一信息用于指示第一参考点在通用时钟下的时间信息，或者，
    所述第一信息用于指示第一参考点在通用时钟下的时间信息的一部分。
  10. 根据权利要求8或9所述的方法，其特征在于，所述接收第一信息，包括：
    通过系统消息接收所述第一信息，或者，
    通过专用无线资源控制RRC信令、媒体接入控制MAC层信令和物理层信令中的至少一项接收所述第一信息。
  11. 根据权利要求8-10任一项所述的方法，其特征在于，所述第一参考点为发送所述第一信息的时域位置所对应的时间单元的边界。
  12. 根据权利要求11所述的方法，其特征在于，当所述第一信息是通过系统消息 发送时，所述第一参考点为预设时段内第一次发送所述第一信息的时域位置所对应的时间单元的边界。
  13. 根据权利要求11或12所述的方法，其特征在于，所述第一信息包括用于指示所述时间单元的索引的指示信息。
  14. 根据权利要求13所述的方法，其特征在于，所述第一参考点所在的时间单元为满足第一条件的第一时间单元中与发送所述第一信息的时间单元最近的时间单元，其中，所述第一条件为：所述第一时间单元的索引号与所述指示信息中指示的索引号相同。
  15. 一种无线通信装置，其特征在于，包括：
    处理单元，用于生成第一信息，所述第一信息用于指示第一参考点的时间信息，所述第一信息指示粒度小于或等于5毫秒，所述第一信息指示粒度为Q*10纳秒，其中，Q为正整数；
    发送单元，用于发送所述第一信息。
  16. 根据权利要求15所述的装置，其特征在于，所述第一信息用于指示第一参考点的时间信息，包括：
    所述第一信息用于指示第一参考点在通用时钟下的时间信息，或者，
    所述第一信息用于指示第一参考点在通用时钟下的时间信息的一部分。
  17. 根据权利要求15或16所述的装置，其特征在于，所述发送单元，具体用于：
    通过系统消息发送所述第一信息，或者，
    通过专用无线资源控制RRC信令、媒体接入控制MAC层信令和物理层信令中的至少一项发送所述第一信息。
  18. 根据权利要求15-17任一项所述的装置，其特征在于，所述第一参考点为发送所述第一信息的时域位置所对应的时间单元的边界。
  19. 根据权利要求18所述的装置，其特征在于，当所述第一信息是通过系统消息发送时，所述第一参考点为预设时段内第一次发送所述第一信息的时域位置所对应的时间单元的边界。
  20. 根据权利要求18或19所述的装置，其特征在于，所述第一信息包括用于指示所述时间单元的索引的指示信息。
  21. 根据权利要求20所述的装置，其特征在于，所述第一参考点所在的时间单元为满足第一条件的第一时间单元中与发送所述第一信息的时间单元最近的时间单元，其中，所述第一条件为：所述第一时间单元的索引号与所述指示信息中指示的索引号相同。
  22. 一种无线通信装置，其特征在于，包括：
    接收单元，用于接收第一信息，所述第一信息用于指示第一参考点的时间信息，所述第一信息指示粒度小于或等于5毫秒，所述第一信息指示粒度为Q*10纳秒，其中，Q为正整数；
    处理单元，用于根据所述第一信息确定所述第一参考点的时间。
  23. 根据权利要求22所述的装置，其特征在于，所述第一信息用于指示第一参考点的时间信息，包括：
    所述第一信息用于指示第一参考点在通用时钟下的时间信息，或者，
    所述第一信息用于指示第一参考点在通用时钟下的时间信息的一部分。
  24. 根据权利要求22或23所述的装置，其特征在于，所述接收单元，具体用于：
    通过系统消息接收所述第一信息，或者，
    通过专用无线资源控制RRC信令、媒体接入控制MAC层信令和物理层信令中的至少一项接收所述第一信息。
  25. 根据权利要求22-24任一项所述的装置，其特征在于，所述第一参考点为发送所述第一信息的时域位置所对应的时间单元的边界。
  26. 根据权利要求25所述的装置，其特征在于，当所述第一信息是通过系统消息发送时，所述第一参考点为预设时段内第一次发送所述第一信息的时域位置所对应的时间单元的边界。
  27. 根据权利要求25或26所述的装置，其特征在于，所述第一信息包括用于指示所述时间单元的索引的指示信息。
  28. 根据权利要求27所述的装置，其特征在于，所述第一参考点所在的时间单元为满足第一条件的第一时间单元中与发送所述第一信息的时间单元最近的时间单元，其中，所述第一条件为：所述第一时间单元的索引号与所述指示信息中指示的索引号相同。
  29. 一种无线通信装置，其特征在于，包括处理器和存储器，所述存储器用于存储指令，所述处理器用于执行所述指令以使得所述无线通信装置执行如权利要求1至7中任一项所述的方法或权利要求8至14中任一项所述的方法。
  30. 一种计算机可读存储介质，其特征在于，包括：计算机软件指令；
    当所述计算机软件指令在无线通信装置中运行时，使得所述无线通信装置执行如权利要求1至7中任一项所述的方法或权利要求8至14中任一项所述的方法。
  31. 一种无线通信装置，其特征在于，包括处理器和接口电路，所述处理器与所述接口电路耦合，所述接口电路用于与其它通信装置进行通信，所述处理器用于执行如权利要求1至7中任一项所述的方法或权利要求8至14中任一项所述的方法。
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