WO2021063173A1 - 定时提前的指示方法、通信装置及存储介质 - Google Patents

定时提前的指示方法、通信装置及存储介质 Download PDF

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Publication number
WO2021063173A1
WO2021063173A1 PCT/CN2020/115346 CN2020115346W WO2021063173A1 WO 2021063173 A1 WO2021063173 A1 WO 2021063173A1 CN 2020115346 W CN2020115346 W CN 2020115346W WO 2021063173 A1 WO2021063173 A1 WO 2021063173A1
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Prior art keywords
instruction
bits
bit
terminal
extended
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PCT/CN2020/115346
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English (en)
French (fr)
Inventor
王晓鲁
罗禾佳
李榕
王斌
王俊
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华为技术有限公司
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Priority to EP20871769.4A priority Critical patent/EP4030857A4/en
Publication of WO2021063173A1 publication Critical patent/WO2021063173A1/zh
Priority to US17/708,896 priority patent/US20220225259A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18563—Arrangements for interconnecting multiple systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/005—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by adjustment in the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
    • H04W56/009—Closed loop measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • This application relates to the field of communication technology, and in particular to a method for indicating timing advance, a communication device, and a storage medium.
  • NR 5G New Radio
  • 3GPP Third Generation Partnership Project
  • NTN non-Terrestrial Networks
  • the altitude difference between the terminal and the network device is not much.
  • the altitude difference between the terminal and the network device is large, resulting in a large round-trip transmission delay or a large round-trip transmission delay difference of signals in the NTN.
  • the large round-trip transmission delay or the round-trip transmission delay difference will cause the timing advance (TA) value sent by the network device to the terminal to be large, resulting in the TA value range indicated by the TA instruction in the prior art May not be able to meet the needs of NTN.
  • TA timing advance
  • This application provides a timing advance indication method, communication device, and storage medium to increase the TA value range indicated by the TA instruction, so as to meet the requirements of the NTN system.
  • the present application provides a method for indicating timing advance.
  • the TA instruction sent by the first device (such as a network device) to the second device (such as a terminal) may include two parts, the first part and the second part. Two parts, the first part is the extended bit of the TA instruction, and the second part is the bit part of the TA instruction in the prior art.
  • the first device determines the extended bit of the TA command according to the subcarrier interval of the second device (such as a terminal)
  • the TA command composed of the first part and the second part is sent to the second device, that is, the second part combined with the first part represents the TA value indicated by the TA command, and TA
  • the instruction is used to indicate the round-trip transmission delay or the round-trip transmission delay difference between the first device and the second device, and the number of bits of the TA instruction is greater than 12 bits.
  • the first device determines the number of extended bits and the position of the extended bits of the TA instruction according to the subcarrier interval of the second device and the size of the cell to which the second device belongs.
  • the first device can send TA instructions to the second device in a different cell to provide communication services for the second device in a different cell.
  • the number of extended bits and the position of extended bits include at least one of the following: 1 bit reserved in the random access response RAR; 2 bits reserved in the back-off indicator BI; uplink authorization UL -1 bit reserved in grant; temporary cell wireless network temporarily recognizes at least one bit reused in TC-RNTI; one bit represented by the odd and even number of the time slot number where the RAR is located.
  • the TA instruction can be bit extended by reserved bits, multiplexed bits of TC-RNTI, or a bit represented by the odd and even number of the slot number where the RAR is located, so that the TA instruction can indicate a larger range of TA values, which satisfies the NTN system Demand.
  • the range of TA values indicated by the TA instruction can be further increased.
  • At least one bit corresponding to the TC-RNTI is a low-order bit of the TA value indicated by the TA instruction.
  • the present application provides a timing advance indication method.
  • the method includes: a second device receives a TA instruction from a first device, the TA instruction includes an extension bit, and the TA instruction is used to instruct the first device
  • the round-trip transmission delay or the round-trip transmission delay difference between a device and the second device, the number of bits of the TA command is greater than 12 bits; the second device is based on the subcarrier interval of the second device, Determine the number of extended bits and the position of the extended bits of the TA instruction.
  • the second device parses out the number of extended bits and the position of the extended bits in the TA command according to the sub-carrier spacing of the second device.
  • the second device combines the extended bits with the existing second part to obtain the indication of the TA command Compared with the existing TA value indicated by the second part, the second device can receive a larger TA value.
  • the expansion of the TA instruction can effectively increase the TA value range indicated by the TA instruction, so as to meet the needs of the NTN system.
  • the method further includes: the second The device sends data to the first device according to the TA value indicated by the TA instruction.
  • the second device determining the number of extended bits and the position of the extended bits of the TA instruction according to the subcarrier spacing of the second device includes: the second device according to the first The subcarrier interval of the second device and the size of the cell to which the second device belongs, determine the number of extended bits and the position of the extended bits of the TA instruction.
  • the number of extended bits and the position of extended bits include at least one of the following: 1 bit reserved in the random access response RAR; 2 bits reserved in the back-off indicator BI; uplink authorization UL -1 bit reserved in grant; temporary cell wireless network temporarily recognizes at least one bit reused in TC-RNTI; one bit represented by the odd and even number of the time slot number where the RAR is located.
  • At least one bit corresponding to the TC-RNTI is a low-order bit of the TA value indicated by the TA instruction.
  • the present application provides a timing advance indication method.
  • the method includes: the first device determines the scaling value corresponding to the TA value indicated by the TA instruction according to the subcarrier interval of the second device; The second device sends the TA instruction, and the scaling value is used to adjust the range of the TA value indicated by the TA instruction.
  • the first device determining the scaling value corresponding to the TA value indicated by the TA instruction according to the subcarrier interval of the second device includes: the first device according to the subcarrier of the second device The interval and the size of the cell to which the second device belongs, determine the scaling value corresponding to the TA value indicated by the TA instruction.
  • the method further includes: the first device sends instruction information to the second device, where the instruction information is used to indicate whether the TA value corresponds to a scaling value.
  • the first device sends instruction information to the second device, where the instruction information is used to indicate whether the TA value corresponds to a scaling value.
  • the indication information includes at least one of the following: reserved bits in the random access response RAR; reserved bits in the back-off indication BI; reserved bits in the uplink grant UL-grant;
  • the wireless network of the temporary cell temporarily recognizes at least one bit corresponding to the TC-RNTI; one bit represented by the odd and even number of the slot number where the RAR is located.
  • the present application provides a method for indicating timing advance.
  • the method includes: a second device receives a TA instruction sent by a first device; and the second device determines the The scaling value corresponding to the TA value indicated by the TA instruction, and the scaling value is used to adjust the range of the TA value indicated by the TA instruction.
  • the method further includes: the second device According to the TA value indicated by the TA instruction and the scaling value, the TA value used when the second device sends data to the first device is determined.
  • the second device determining the scaling value corresponding to the TA value indicated by the TA instruction according to the subcarrier interval of the second device includes: the second device according to the second device The subcarrier interval of the device and the size of the cell to which the second device belongs are determined, and the scaling value corresponding to the TA value indicated by the TA instruction is determined.
  • the method further includes: the second device receives indication information of the first device, where the indication information is used to indicate whether the TA value corresponds to a scaling value.
  • the second device receives indication information of the first device, where the indication information is used to indicate whether the TA value corresponds to a scaling value.
  • the indication information includes at least one of the following: reserved bits in the random access response RAR; reserved bits in the back-off indication BI; reserved bits in the uplink grant UL-grant;
  • the wireless network of the temporary cell temporarily recognizes at least one bit corresponding to the TC-RNTI; one bit represented by the odd and even number of the slot number where the RAR is located.
  • the present application provides a communication device, including a module, component or circuit for implementing the method described in the first, second, third, or fourth aspect.
  • the present application provides a communication device, including:
  • the processor and the transceiver, the processor and the transceiver communicate with each other through internal connections;
  • the processor is used to execute the processing steps in the method according to the first, second, third or fourth aspect
  • the transceiver is used to execute the first, second, third, or The transceiving step in the method described in the fourth aspect.
  • the communication device in the sixth aspect may be a network device or a terminal, or a component (such as a chip or a circuit) of the network device or the terminal.
  • the communication device in the sixth aspect may further include a memory, the memory is configured to store a computer program, and the processor is configured to execute the computer program stored in the memory to enable the communication
  • the device executes the method according to the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • the present application provides a communication device, including: an input interface circuit, a logic circuit, and an output interface circuit, wherein the logic circuit is used to perform aspects such as the first aspect, the second aspect, the third aspect, or the fourth aspect The method described.
  • the present application provides a computer-readable storage medium in which a computer program is stored, and the computer program includes a computer program for executing the method described in the first, second, third, or fourth aspect. Instructions for the described method.
  • the present application provides a computer program.
  • the computer program includes instructions for executing the method described in the first, second, third, or fourth aspect.
  • the program in the ninth aspect may be stored in whole or in part on a storage medium packaged with the processor, or may be stored in part or in a memory not packaged with the processor.
  • an embodiment of the present application further provides a system, including the communication device described in the fifth aspect, the sixth aspect, or the seventh aspect.
  • an embodiment of the present application further provides a processor, which includes: at least one circuit, configured to execute the method according to the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • an embodiment of the present application further provides a communication device, the communication device comprising: a memory and a processor, wherein the memory is used to store a computer program; the processor is used to execute the computer stored in the memory A program to cause the communication device to perform the method described in the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • the first device determines the number of extended bits and the extended bit positions of the timing advance TA command according to the subcarrier interval of the second device, and sends the TA command to the second device.
  • the TA command is used to indicate
  • the TA instruction includes extended bits, and the number of bits of the TA instruction is greater than 12 bits.
  • the number of bits is 12 bits. Therefore, compared with the existing TA instructions, the TA instructions in this application have more bits, which can indicate a larger range of TA values.
  • the first device and the second device are communication devices in the NTN system, by extending the TA instruction, the TA value range indicated by the TA instruction can be effectively increased, so as to meet the requirements of the NTN system.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the application
  • Fig. 2 is a schematic diagram of a satellite communication system provided by an embodiment of the application.
  • Fig. 3 is a schematic diagram of synchronization of an uplink data frame and a downlink data frame in the prior art
  • FIG. 4 is a schematic diagram of another synchronization between an uplink data frame and a downlink data frame in the prior art
  • FIG. 5 shows the random access process in the LTE/NR protocol in the prior art
  • Fig. 6 is a schematic diagram of a frame format of RAR information in the prior art
  • Figure 7 is a schematic diagram of a satellite communication system in the prior art
  • FIG. 8 is a flowchart of a method for indicating timing advance provided by an embodiment of the application.
  • Figure 9 is a schematic diagram of the frame format of the BI command in the prior art.
  • FIG. 10 is a schematic diagram of the frame format of the UL-grant command in the prior art.
  • FIG. 11 is a schematic diagram of a relationship between a minimum elevation angle of a terminal and a required minimum TA indication range according to an embodiment of this application;
  • FIG. 12 is a flowchart of a method for indicating timing advance according to an embodiment of the application.
  • FIG. 13 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 14 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • 15 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 16 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 17 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 19 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 20 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the application.
  • the communication system shown in FIG. 1 mainly includes a network device 11 and a terminal 12.
  • the network device 11 may be a network-side device, for example, an access point (AP) of a wireless local area network (Wireless Local Area Network, WLAN), or a 4G evolved base station (evolved Node B, eNB or eNodeB) , Next-generation communication base stations, such as 5G’s new radio access technology (New Radio Access
  • NR base station (next generation Node B, gNB) or small station, micro station, can also be relay station, transmission and reception point (Transmission and Reception Point, TRP), road side unit (Road Side Unit, RSU), etc.
  • base stations in communication systems of different communication standards are different.
  • the base station of the 4G communication system is called the Long Term Evolution (LTE) eNB
  • the base station of the 5G communication system is called the NR gNB
  • the base station that supports both the 4G communication system and the 5G communication system is called the evolved long-term For Evolutional Long Term Evolution (eLTE) eNBs
  • LTE Long Term Evolution
  • NR gNB the base station that supports both the 4G communication system and the 5G communication system
  • eLTE evolved long-term For Evolutional Long Term Evolution
  • the terminal 12 is also called User Equipment (UE), which is a device that provides users with voice and/or data connectivity, such as handheld devices with wireless connection functions, vehicle-mounted devices, and vehicle-mounted devices.
  • UE User Equipment
  • Vehicles vehicle to vehicle, V2V communication capabilities, etc.
  • Common terminals include, for example: mobile phones, tablet computers, notebook computers, palmtop computers, mobile internet devices (MID), wearable devices, such as smart watches, smart bracelets, pedometers, and so on.
  • Multiple means two or more than two, and other quantifiers are similar.
  • “And/or” describes the corresponding relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone.
  • the character “/” generally indicates that the associated objects before and after are in an "or” relationship.
  • terminals 12 included in the communication system shown in FIG. 1 are merely an example, and the embodiment of the present application is not limited thereto.
  • it may also include more terminals 12 that communicate with the network device 11.
  • the network device 11 and the terminal 12 are shown, the communication system may not be limited to include the network device 11 and the terminal 12.
  • it may also include core network nodes or Devices that carry virtualized network functions, etc., are obvious to those skilled in the art, and will not be repeated here.
  • the embodiments of this application are not only applicable to 4G wireless communication systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, and subsequent evolution of LTE communication systems. It can also be applied to the next generation of wireless communication systems, namely 5G communication systems, and other systems that may appear in the future, such as the next generation of wifi networks, 5G Internet of Vehicles, NTN systems, etc.
  • the NTN system may specifically be a satellite communication system or other non-terrestrial network system.
  • the satellite communication system shown in FIG. 2 is taken as an example.
  • 20 represents a coverage area of the satellite, and multiple terminals may exist in the coverage area.
  • the coverage area may be an area covered by one or more beams of the satellite, or an area with the same cell level as the NR system.
  • 21 represents a reference point in the coverage area. Specifically, the reference point may be a point closest to the satellite in the coverage area, and the reference point 21 may also be recorded as the near end.
  • 22 represents any point in the coverage area except the reference point. For example, 22 represents the point farthest from the satellite in the coverage area.
  • point 22 can also be recorded as the far end.
  • the terminal 23 and the terminal 24 are any two terminals in the coverage area. Since the terminal is relatively far from the satellite, the round-trip transmission delay of the signal between the terminal and the satellite is relatively large. In some cases, the distance between the near end and the satellite may be regarded as the common transmission distance in the coverage area 20. Correspondingly, a public round-trip transmission delay will be generated when the signal is transmitted back and forth over the common transmission distance.
  • the public round-trip transmission delay is recorded as the public TA value, and the round-trip transmission delay of the signal between the terminal and the satellite is equal to The difference between the common round-trip transmission delay can be recorded as the round-trip transmission delay difference.
  • the altitude difference between the base station or the satellite and the terminal is generally greater than 500 kilometers, so the terminal in the same cell in the NTN system
  • the round-trip transmission delay is much greater than the round-trip transmission delay of the terminal in the same cell in the terrestrial communication system (such as the NR system), and the round-trip transmission delay difference of the terminal in the same cell in the NTN system is also much greater than that of the terrestrial communication system (such as the NR system) In the same cell, the round-trip transmission delay difference of the terminal.
  • TA timing advance
  • a cell in the NTN system can be the projection area of a satellite beam on the ground, or the projection area of multiple satellite beams on the ground, or it may be a beam or multiple beams on the ground. Part of the projection area on the ground.
  • Figure 3 shows the timing advance in the NR system, that is, the uplink data frame sent by the terminal is transmitted before the downlink data frame corresponding to the terminal, and the time that the uplink data frame is transmitted earlier than the downlink data frame is recorded as the timing advance TA, the TA The value reflects the signal round-trip transmission delay between the terminal and the network device in the NR system.
  • Figure 4 shows the timing advance in the NTN system. The TA value reflects the signal round-trip transmission delay between the terminal and the network device in the NTN system. By comparing Figure 3 and Figure 4, it can be seen that the timing advance in the NTN system is greater than the timing advance in the NR system. As a result, the TA value range indicated by the TA instruction in the prior art may not meet the requirements of NTN.
  • Figure 5 shows the process of a terminal applying to access the network in the NR system.
  • the terminal sends a random access preamble to the network device.
  • the random access preamble can be specifically selected by the terminal from a specified set.
  • a leader sequence A leader sequence.
  • the network device sends a random access response (Random Access Response, RAR) to the terminal.
  • the random access response may include the preamble sequence identifier, TA value, uplink grant (UL-grant), and temporary cell wireless network Temporary identification number (Temporary Cell-Radio Network Temporary Identifier, TC-RNTI).
  • Step 3 The terminal sends a Layer 2/Layer 3 (L2/L3) message to the network device.
  • L2/Layer 3 L2/Layer 3
  • the L2/L3 message may include the C-RNTI and the terminal identifier.
  • Step 4. The network device sends a contention resolution message to the terminal. In some cases, before sending the random access preamble, the terminal also needs to obtain downlink synchronization with the network device and random access timing (Random Access Channel Occasion, RO) configuration.
  • Random Access Channel Occasion, RO Random Access Channel
  • FIG. 6 shows the RAR frame format, where the TA instruction occupies 12 bits.
  • SCS Sub Carrier Spacing
  • the subcarrier interval here refers to the subcarrier interval of the first uplink data sent after the terminal receives the RAR. It is understandable that before the network device sends the RAR to the terminal, the network device has configured the terminal's subcarrier interval to the terminal, that is, before the RAR is sent, both the network device and the terminal know the terminal's subcarrier interval. It can be understood that when the sub-carrier spacing is 15 kHz, the maximum value of N TA can be calculated according to the maximum value of T A of 3846, and the maximum value of N TA is about 2 milliseconds. Table 1 below shows the correspondence between the subcarrier spacing, the ⁇ value, and the maximum value of N TA.
  • the satellite communication system can be divided into a Geostationary Earth Orbit (GEO) system, a Medium Earth Orbit (MEO) satellite communication system and a Low Earth Orbit (LEO) satellite communication system according to the satellite orbit height. There will be cells of different sizes in the GEO satellite communication system, MEO satellite communication system or LEO satellite communication system.
  • GEO Geostationary Earth Orbit
  • MEO Medium Earth Orbit
  • LEO Low Earth Orbit
  • the cell diameter is selected to measure the cell size.
  • the cell diameter in a satellite communication system is within a preset range, for example, 100 kilometers to 1500 kilometers.
  • the following is a schematic description of several cell diameter values.
  • Table 2 in the GEO satellite communication system, when the cell diameter is 500 kilometers and the minimum elevation angle of the terminal is 10 degrees, the maximum value that N TA can represent is required. The time is 3.2557 milliseconds, and the N TA corresponding to the TA value indicated by the existing TA instruction can only indicate the maximum value of 2.046 milliseconds, that is, the TA value indicated by the existing TA instruction cannot meet the requirements of the NTN system.
  • the maximum time that N TA can represent is 1.3076 milliseconds.
  • the subcarrier spacing of the terminal is greater than 15 kHz, the current The N TA corresponding to the TA value indicated by some TA instructions will not be able to meet the requirements of this scenario.
  • the maximum time that N TA can represent is 0.655 milliseconds.
  • the subcarrier spacing of the terminal is greater than 30 kHz, the existing TA The N TA corresponding to the TA value indicated by the instruction will not be able to meet the requirements of the scenario.
  • the elevation angle of the terminal may specifically be the common belief angle as shown in FIG. 7.
  • an embodiment of the present application proposes a timing advance indication method.
  • the following is an indication of the timing advance in conjunction with specific embodiments. Methods are introduced.
  • FIG. 8 is a flowchart of a method for indicating timing advance provided by an embodiment of the application. As shown in FIG. 8, the timing advance indication method in this embodiment includes the following steps:
  • the first device determines the number of extended bits and the position of the extended bits of the timing advance TA instruction according to the subcarrier interval of the second device.
  • the first device may be a network device, and the second device may be a terminal.
  • the first device may be a terminal, and the second device may be a network device.
  • the following is a schematic description with the first device as the network device and the second device as the terminal.
  • the TA command in this embodiment includes two parts, which are respectively denoted as the first part and the second part, where the first part is determined according to the subcarrier spacing, and the second part is the prior art
  • the TA instruction is the 12-bit part as shown in Figure 6.
  • the first part can be regarded as the extended part or extended bits of the TA command, and the number of extended bits and the position of the extended bits can be determined according to the sub-carrier spacing.
  • the extended bits may be reserved bits in existing fields, instructions or signaling, multiplexed bits, or implicitly represented bits.
  • the network device and the terminal can pre-appoint the correspondence between the subcarrier interval and the extended bit.
  • the network device When the network device needs to send a TA command to the terminal, it determines whether the TA value indicated by the existing 12-bit TA command can meet the requirements of the NTN system.
  • the extended bit corresponding to the carrier spacing is used as the extended bit of the TA command, that is, the first part, and the extended bit plus the existing 12-bit part constitutes the TA command. Therefore, in the embodiment of the present application, the TA The number of bits of the instruction is greater than 12 bits.
  • the first device sends a TA instruction to the second device, where the TA instruction includes an extension bit, and the TA instruction is used to indicate the round-trip transmission delay or round-trip transmission time between the first device and the second device Delay, the number of bits of the TA instruction is greater than 12 bits.
  • the range of the TA value indicated by the second part can meet the requirement of the TA value used by the second device when the second device sends a signal to the first device.
  • the TA value indicated by the first part and the second part as a whole is used to indicate the TA value used by the second device when the second device sends a signal to the first device.
  • the network device sends the TA instruction to the terminal, and correspondingly, the terminal receives the TA instruction sent by the network device.
  • the second device determines the number of extended bits and the position of the extended bits of the TA instruction according to the subcarrier spacing of the second device.
  • the terminal After the terminal receives the TA command sent by the network device, the terminal can determine the first part of the extended bit in the TA command according to its own subcarrier spacing, for example, the number of extended bits and the position of the extended bits. Further, analyze the 12-bit part that appears in the RAR information, that is, the second part, and determine the TA value indicated by the first part and the second part as a whole, and calculate the time adjustment value N TA according to the TA value, and according to the N TA direction.
  • the network device sends uplink data, that is, the N TA is used as the reference value of the timing advance for the terminal to send the uplink data.
  • the network device Before the terminal sends the random access preamble to the network device, the network device will broadcast the public TA value. When the network device receives the random access preamble of the terminal and sends RAR information to the terminal, the RAR information
  • the TA value indicated by the TA command carried in the terminal is the difference between the round-trip transmission delay of the signal between the terminal and the satellite and the common TA value, and this difference can be recorded as the round-trip transmission delay difference of the signal between the terminal and the satellite.
  • the network device does not broadcast the public TA value.
  • the network device receives the random access preamble of the terminal and sends RAR information to the terminal, the RAR The TA value indicated by the TA instruction carried in the information is the round-trip transmission delay of the signal between the terminal and the satellite.
  • the first device determines the number of extended bits and the position of the extended bits of the timing advance TA instruction according to the subcarrier interval of the second device, and sends the TA instruction to the second device.
  • the TA instruction is used to instruct the first device.
  • the round-trip transmission delay or the round-trip transmission delay difference between the device and the second device, the TA command includes extended bits, and the bit number of the TA command is greater than 12 bits, because the bit number of the existing TA command is 12 bits, therefore, compared with the existing TA instruction, the TA instruction in this application has more bits, which can indicate a larger range of TA values.
  • the first device and the second device are communication devices in the NTN system, by extending the TA instruction, the TA value range indicated by the TA instruction can be effectively increased, so as to meet the requirements of the NTN system.
  • the number of extended bits and the position of extended bits include the following possible situations:
  • the 1-bit reserved bit in the RAR as shown in FIG. 6 is the reserved bit.
  • the BI instruction occupies 8 bits, of which 2 bits are reserved bits, that is, reserved bits.
  • the BI instruction may be in the RAR information, or may be sent to the terminal together with the RAR information.
  • the BI corresponding to the last 4 bits of the 8 bits shown in FIG. 9 is specifically the value indicated by the BI instruction.
  • the TC-RNTI signaling occupies 16 bits, indicating a range of 1-65519.
  • the terminal can use the value indicated by the TC-RNTI instruction to scramble the sent uplink data. Therefore, the bits of the TC-RNTI signaling can be multiplexed to extend the bits of the TA command.
  • one or more bits can be arbitrarily selected from the 16 bits, and the one or more bits are used to represent the extended bits of the TA command, and are also used to represent the value indicated by the TC-RNTI signaling, that is, the selected One or more bits are multiplexed bits.
  • a feasible multiplexing method is: first determine the value of one or more bits of the multiplexing according to the TA value indicated by the TA instruction, and further, determine the remaining 16 bits according to the value indicated by the TC-RNTI instruction The value of the bit.
  • the slot number of the slot where the RAR information is located may be odd or even. It is understandable that one bit can represent two states, and correspondingly, two states can represent one bit. Therefore, the two states in which the time slot number of the time slot where the RAR information is located is odd or even can be used to represent one bit of the TA instruction extension. In other words, if the slot number of the slot where the RAR information is located is odd or even, it can implicitly represent one bit.
  • Table 3 shows several bits or extension methods that can be used to extend the TA instruction as described above, that is, Table 3 can be used as a bit candidate pool for extending the TA instruction.
  • Table 4 lists the maximum value that can be represented by N TA and the number of bits that need to be added to the TA command in scenarios with different subcarrier spacing and different cell diameters.
  • D represents the cell diameter.
  • the existing 12-bit TA command can meet the requirements of the scenario.
  • 12 bits cannot meet the requirements of this scenario. Therefore, the TA instruction needs to be extended. For example, when the sub-carrier spacing is 30 kHz, one bit needs to be extended.
  • the number of bits that need to be increased is also increasing.
  • D represents the diameter of the satellite beam, that is, the beam diameter.
  • the network equipment can determine the number of bits that need to be extended in the case of different sub-carrier intervals according to the cell diameter of the cell where the terminal is located, and Table 4. Further, according to the number of bits to be extended, determine which bits are used as extended bits in the bit candidate pool shown in Table 3. At the same time, the network device and the terminal can pre-appoint the extension bits corresponding to different subcarrier intervals, including the number of extension bits and the location of the extension bits. Further, the network device determines the extended bit corresponding to the subcarrier interval according to the subcarrier interval of the terminal, expands the bit corresponding to the TA instruction according to the extended bit, and sends the extended TA instruction to the terminal.
  • the terminal After receiving the TA instruction, the terminal determines the extension bit corresponding to the subcarrier interval of the terminal according to the subcarrier interval of the terminal and the extension bits corresponding to the different subcarrier intervals agreed in advance by the terminal and the network device, And according to the extended bit and the existing 12 bits, the TA value indicated by the TA instruction is determined as a reference value for the timing advance for the terminal to send uplink data.
  • the cell diameter of the cell where the terminal is located is less than or equal to 300 kilometers, and the minimum elevation angle of the terminal is 10 degrees.
  • the sub-carrier spacing is 30kHz, 60kHz, 120kHz, 240kHz, in order to meet the requirement of N TA indicating the maximum value of 2 milliseconds, the number of bits that need to be increased are 1, 2, 3, and 4 bits respectively. Further, according to the increased bits The number of bits is determined from the bit candidate pool shown in Table 3 as the extended bits.
  • the correspondence between the subcarrier spacing and the extended bits shown in Table 5 is only a schematic description, and is not specific. limited. In other embodiments, there may also be other corresponding relationships, for example, the corresponding relationships shown in Table 6 may also be used. It is understandable that the method described in the embodiment of the present application may also be applicable to terminals in an area with a satellite beam as a unit, for example, the terminal is located in an area with a beam diameter less than or equal to 300 kilometers.
  • N/A means that there is no need to increase the bits of the TA instruction to meet the needs of the NTN system.
  • Table 5 as an example to illustrate schematically.
  • the correspondence between the pre-arranged subcarrier interval and the extended bit between the network device and the terminal may specifically be the correspondence shown in Table 5.
  • Table 5 may be sent to the terminal after being established by the network device, or sent to the network device after being established by the terminal.
  • the subcarrier interval of the terminal is 30kHz
  • the network equipment determines that the TA command needs to add 1 bit according to the correspondence in Table 5, that is, the TA command corresponds to 13 bits, of which 12 bits are the RAR as shown in Figure 6.
  • 1 bit is the 1 bit reserved in BI shown in Figure 9.
  • the 1 bit reserved in BI can be used as the low-order bit or the high-order bit of the 13 bits. It can also be the middle bit, which is not specifically limited here.
  • the network device sends the RAR information and the BI command to the terminal together.
  • the terminal After receiving the RAR information and the BI command, the terminal determines that the 1 bit reserved in BI is the extended bit of the TA command according to the subcarrier spacing of the terminal and the correspondence shown in Table 5. The reserved 1 bit and the existing 12 bits in the RAR information are combined to obtain the TA value indicated by the TA instruction, and the TA value is converted into a time adjustment value N TA , and N TA is used as the timing for the terminal to send uplink data Advance reference value.
  • the network device and the terminal may also pre-appoint: when one bit needs to be added, and the added one bit uses one bit reserved in BI, the BI medium should be used. Which of the 2 reserved bits extends the TA instruction.
  • the 1 bit implicitly indicated by TC-RNTI is which of the 16 bits corresponding to TC-RNTI, which can also be agreed in advance by the network equipment and the terminal, and the agreed method is not specifically limited here. For example, you can It is a way of sending instruction information, or it can be based on Table 5 to further add some instruction information.
  • the sub-carrier spacing is 240kHz
  • 1 bit implicitly expressed by TC-RNTI it is necessary to use 1 bit implicitly expressed by TC-RNTI to extend the TA command, that is to say, any of the 16 bits corresponding to TC-RNTI can be used
  • One bit represents both the information bit of the TA command and the information bit of the TC-RNTI signaling. Therefore, the one bit implicitly represented by the TC-RNTI is recorded as a multiplexed bit.
  • the value of the multiplexed bit may be determined first according to the TA value that the TA instruction needs to indicate, and further, the value of the remaining bits in the 16 bits may be determined according to the value indicated by the TC-RNTI instruction.
  • reserved bits such as reserved bits in BI, reserved bits in UL-grant,
  • the reserved bits in RAR extend the TA instruction, so that the TA instruction can indicate a larger range of TA values, which meets the needs of the NTN system.
  • the combination of reserved bits and the bits provided by the implicit mode of TC-RNTI can further increase the range of TA values indicated by the TA instruction.
  • the cell diameter of the cell where the terminal is located is less than or equal to 600 kilometers, and the minimum elevation angle of the terminal is 10 degrees.
  • the subcarrier spacing is 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, in order to meet the requirement of N TA representing the maximum value of 4 milliseconds
  • the number of bits that need to be increased are 1, 2, 3, 4, and 5 bits respectively.
  • the number of additional bits is determined from the bit candidate pool shown in Table 3 which bits are used as extended bits.
  • the corresponding relationship between the subcarrier spacing and the extended bits is shown in Table 7 below. That is to say, the terminal and The network device can pre-appoint the corresponding relationship shown in Table 7. It is understandable that the method described in the embodiments of the present application may also be applicable to terminals in an area with a satellite beam as a unit, for example, the terminal is located in an area with a beam diameter less than or equal to 600 kilometers.
  • the correspondence between the subcarrier spacing and the extension bits shown in Table 7 is only a schematic illustration, and is not specifically limited. In other embodiments, there may be other corresponding relationships.
  • the network equipment determines the extended bits of the TA command according to the subcarrier interval of the terminal and Table 7 and sends the TA command to the terminal, and the process of determining the extended bits of the TA command according to the subcarrier interval and Table 7 by the terminal are as described above. I will not repeat them here.
  • the 1-bit multiplexing mode implicitly represented by TC-RNTI is also as described above, and will not be repeated here.
  • the cell diameter of the cell where the terminal is located is less than or equal to 1200 kilometers, and the minimum elevation angle of the terminal is 10 degrees.
  • the sub-carrier spacing is 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, in order to meet the requirement of N TA representing the maximum value of 8 milliseconds, the number of bits that need to be increased are 2, 3, 4, 5, and 6 bits respectively.
  • the number of additional bits is determined from the bit candidate pool shown in Table 3 which bits are used as extended bits.
  • the corresponding relationship between the subcarrier spacing and the extended bits is shown in Table 8 below. That is to say, the terminal and The network device can pre-appoint the corresponding relationship shown in Table 8. It is understandable that the method described in the embodiments of the present application may also be applicable to terminals in an area with a satellite beam as a unit, for example, the terminal is located in an area with a beam diameter less than or equal to 1200 kilometers.
  • the correspondence between the subcarrier spacing and the extension bits shown in Table 8 is only a schematic illustration, and is not specifically limited. In other embodiments, there may be other corresponding relationships. For example, when the subcarrier spacing is 240kHz, you can also select 1 bit reserved in RAR, 2 bits reserved in BI, 1 bit reserved in UL-grant, and 2 bit pairs implicitly represented by TC-RNTI.
  • TA instruction is extended. The network equipment determines the extended bits of the TA command according to the subcarrier interval of the terminal and Table 8, and sends the TA command to the terminal, and the process for the terminal to determine the extended bits of the TA command according to the subcarrier interval and Table 8 are as described above. I will not repeat them here.
  • the 1-bit multiplexing mode implicitly represented by TC-RNTI is also as described above, and will not be repeated here.
  • the cell diameter is within a preset range, for example, 100 kilometers to 1500 kilometers, and the above-mentioned cell diameter is less than or equal to 300 kilometers, 600 kilometers, or 1200 kilometers. It is only a schematic illustration and does not limit the cell diameter.
  • the embodiment of the present application does not limit the position of the extended bit in the multiple bits occupied by the TA instruction as a whole.
  • the extended bit can be used as the low bit, the high bit or the middle bit.
  • some of the extended bits are used as low-order bits, and the other part of the bits is used as high-order bits or middle bits.
  • Figure 11 shows the relationship between the minimum elevation angle of the terminal and the minimum TA indication range required. It can be seen from the figure that when the minimum elevation angle of the terminal is less than 50 degrees in a cell, the range of TA greater than 2 milliseconds needs to be used.
  • the cell where the terminal with a minimum elevation angle greater than 50 degrees is located may not use the one expressed in the implicit manner of TC-RNTI. Or more bits.
  • the cell where the terminal with the minimum elevation angle is greater than 50 degrees or the cell where the terminal with the minimum elevation angle is less than 50 degrees can be used.
  • one or more bits implicitly expressed by TC-RNTI can be used as the low-order bits of the TA instruction, so that terminals and network devices in different scenarios can use the implicit TC-RNTI.
  • One or more bits represented by the formula thereby improving resource utilization.
  • a network device can provide services to terminals in one cell, or it may provide services to terminals in multiple cells.
  • the network device can provide services according to the cell diameter.
  • the corresponding relationship between the sub-carrier spacing and the extended bit is determined, for example, the corresponding relationship shown in Table 5 to Table 8. Further, according to the subcarrier spacing of the terminal in the cell, the bit that needs to be extended is determined.
  • the network device may also provide services to terminals in multiple different cells. In this case, the network device needs to determine the extended bits of the TA instruction according to the subcarrier spacing of the terminal and the diameter of the cell to which the terminal belongs. In this case, the network device and the terminal can establish or store the corresponding relationship shown in Table 9 below.
  • D in Table 9 represents the cell diameter or beam diameter. That is to say, the method described in the embodiment of the present application is not only applicable to a cell-level area, but also applicable to a beam-level area.
  • the network equipment determines the extension bit of the TA command according to the terminal's subcarrier spacing, cell diameter, and Table 9, and sends the TA command to the terminal, and the terminal determines the TA command based on the subcarrier spacing, cell diameter, and Table 9.
  • the process of extending the bit is as described above, and will not be repeated here.
  • the terminal with a cell diameter less than or equal to 300 kilometers can store the corresponding relationship shown in Table 5 or Table 6, and the terminal with a cell diameter less than or equal to 600 kilometers can store the corresponding relationship.
  • the terminal with a cell diameter less than or equal to 1200 kilometers can store the correspondence shown in Table 8.
  • the range of TA values indicated by the TA instruction can be effectively increased to meet the requirements of the NTN system.
  • the bit candidate pool shown in Table 3 may have been used. In this case, the method described in the following embodiment can also be used. Meet the needs of the NTN system.
  • FIG. 12 is a flowchart of a method for indicating timing advance provided by an embodiment of the application. As shown in FIG. 12, the method for indicating timing advance in this embodiment includes the following steps:
  • the first device determines a scaling value corresponding to the TA value indicated by the TA instruction according to the subcarrier interval of the second device.
  • the first device may be a network device
  • the second device may be a terminal.
  • the network device needs to send a TA command to the terminal, determine whether the TA value indicated by the existing 12-bit TA command can meet the requirements of the NTN system. If it cannot meet the requirements of the NTN system, determine the TA command indication according to the subcarrier interval of the terminal The scale value corresponding to the TA value. Wherein, the scaling value is used to adjust the range of the TA value indicated by the TA instruction.
  • the maximum value of TA indicated by the 12-bit TA command is 3846.
  • the time adjustment value of TA can be calculated.
  • the maximum value of N TA is about 2 milliseconds. If the current NTN system requires N TA to indicate the maximum value of 4 In milliseconds, the subcarrier interval of the terminal is 15kHz, and the diameter of the cell to which the terminal belongs is less than or equal to 600 kilometers. According to the above embodiment, it can be seen that the TA instruction needs to be increased by 1 bit, and the maximum value that a 13-bit TA value can represent is 12 bits The TA value is twice the maximum value that can be represented, that is, the TA value indicated by the TA instruction needs to be increased to twice the original value.
  • the multiple by which the TA value needs to be increased can be recorded as the zoom value, which is also called the scale factor S.
  • the zoom value which is also called the scale factor S.
  • the subcarrier spacing of 15kHz, 30kHz, 60kHz, 120kHz, 240kHz corresponds to a scale factor of 2 respectively. , 4, 8, 16, 32.
  • the scale factor S is determined according to the multiple that the TA value indicated by the TA instruction needs to be increased.
  • the first device sends the TA instruction to the second device.
  • the TA instruction here may specifically be a 12-bit TA instruction as shown in FIG. 6.
  • the second device determines a scaling value corresponding to the TA value indicated by the TA instruction according to the subcarrier interval of the second device.
  • the network device and the terminal may pre-appoint the corresponding relationship as shown in Table 10.
  • the meaning of ⁇ is the same as that described in the foregoing embodiment, the value of T c is consistent with the value described in the foregoing embodiment, and the definition of the subcarrier spacing is also consistent with the definition in the foregoing embodiment, and will not be repeated here.
  • the N TA can be used as a reference value for the timing advance for the terminal to subsequently send uplink data to the network device.
  • the corresponding relationship between the subcarrier spacing and the size factor as described in Table 10 is only a schematic illustration and is not specifically limited.
  • the size factor is not limited to these integers and can be set to any number. Rational numbers.
  • the key point is the correspondence between the subcarrier spacing and the size factor. For example, in a scenario where the cell diameter or beam diameter is less than or equal to 600 kilometers, and the minimum elevation angle of the terminal is 10 degrees, the correspondence between the subcarrier spacing and the size factor may also be the correspondence as shown in Table 11 below.
  • the network device can also determine to send to the terminal according to the subcarrier spacing of the terminal and the diameter of the cell to which the terminal belongs
  • the scale value corresponding to the TA value indicated by the TA instruction can refer to the correspondence relationship described in Table 12 below.
  • the network device determines the scale factor according to Table 12, sends the TA command, and the terminal according to the subcarrier spacing The process of determining the scale factor will not be repeated here.
  • N/A means that the requirement of the NTN system can be met without increasing the multiple of the TA value.
  • D in Table 12 represents the cell diameter or the beam diameter, that is, the method described in the embodiment of the present application is not only applicable to a cell-level area, but also applicable to a beam-level area.
  • the scale value corresponding to the TA value indicated by the TA instruction is determined by the subcarrier interval. Since the scale value can be used to adjust the range of the TA value indicated by the TA instruction, it can be determined according to the TA value indicated by the TA instruction and the scale value It can indicate a larger range of TA values, which can meet the needs of the NTN system.
  • the network device may also send indication information to the terminal, where the indication information is used to indicate whether the TA value corresponds to a scaling value.
  • the indication information includes at least one of the following: reserved bits in the random access response RAR; reserved bits in the back-off indication BI; reserved bits in the uplink authorization UL-grant; temporary cell radio network temporary identification TC-RNTI Corresponding at least one bit; one bit represented by the odd and even number of the slot number where the RAR is located. That is, the indication information can be represented by one bit in the bit candidate pool shown in Table 3 above. For example, take the 1 bit reserved in RAR, that is, the 1 bit reserved bit shown in Fig. 6 as an example for schematic illustration.
  • this bit When this bit is 1, it means that the TA value indicated by the TA instruction corresponds to a scaling value, that is, the TA is calculated.
  • the scale factor is needed to adjust the time value of N TA.
  • this bit When this bit is 0, it means that the TA value indicated by the TA instruction does not have a corresponding scaling value, that is, the scale factor is not needed when calculating the TA time adjustment value N TA. This can increase the flexibility of the scale factor.
  • the operations or steps implemented by the terminal can also be implemented by components (such as chips or circuits) that can be used in the terminal, and the operations or steps implemented by the network device can also be implemented by the network device.
  • the components (such as chips or circuits) of the device are implemented.
  • Figure 13 shows a schematic diagram of the structure of a communication device.
  • the communication device can be used to implement the method of the corresponding part of the network device (for example, the first device) or the method of the corresponding part of the terminal (for example, the second device) described in the foregoing method embodiment.
  • the method of the corresponding part of the network device for example, the first device
  • the method of the corresponding part of the terminal for example, the second device
  • the communication device 130 may include one or more processors 131, and the processor 131 may also be referred to as a processing unit, which may implement certain control functions.
  • the processor 131 may be a general-purpose processor or a special-purpose processor.
  • the processor 131 may also store an instruction 133, and the instruction may be executed by the processor, so that the communication device 130 executes the corresponding terminal or network device described in the above method embodiment. Methods.
  • the communication device 130 may include a circuit, and the circuit may implement the sending or receiving or communication function in the foregoing method embodiment.
  • the communication device 130 may include one or more memories 132, on which instructions 134 or intermediate data are stored, and the instructions 134 may be executed on the processor to enable the communication device 130 to execute The method described in the above method embodiment.
  • other related data may also be stored in the memory.
  • instructions and/or data may also be stored in the processor.
  • the processor and the memory can be provided separately or integrated together.
  • the communication device 130 may further include a transceiver 135.
  • the processor 131 may be referred to as a processing unit.
  • the transceiver 135 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and is used to implement the transceiver function of the communication device.
  • the transceiver may send a TA instruction to the second device.
  • the transceiver can further complete other corresponding communication functions.
  • the processor is used to complete the corresponding determination or control operation, and optionally, can also store corresponding instructions in the memory.
  • the transceiver may receive the TA instruction sent by the first device.
  • the transceiver can further complete other corresponding communication functions.
  • the processor is used to complete the corresponding determination or control operation, and optionally, can also store corresponding instructions in the memory.
  • the processor and transceiver described in this application can be implemented in integrated circuit (IC), analog IC, radio frequency integrated circuit RFIC, mixed signal IC, application specific integrated circuit (ASIC), printed circuit board ( printed circuit board, PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured using various 1C process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), and P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the communication device may be a stand-alone device or may be part of a larger device.
  • the device may be:
  • the IC collection may also include storage components for storing data and/or instructions;
  • ASIC such as modem (MSM)
  • FIG. 14 is a schematic structural diagram of a communication device provided by an embodiment of the application.
  • the communication device 140 includes: a determining module 1401 and a sending module 1402; wherein the determining module 1401 is used to determine the number of extended bits and the position of the extended bits of the timing advance TA command according to the subcarrier interval of the second device
  • the sending module 1402 is used to send the TA instruction to the second device, the TA instruction includes an extension bit, and the TA instruction is used to instruct the round-trip transmission between the first device and the second device Delay or round-trip transmission delay difference, and the number of bits of the TA instruction is greater than 12 bits.
  • the determining module 1401 determines the number of extended bits and the position of the extended bits of the timing advance TA command according to the subcarrier interval of the second device, it is specifically configured to: according to the subcarrier interval of the second device And the size of the cell to which the second device belongs, determine the number of extended bits and the position of the extended bits of the TA instruction.
  • the number of extended bits and the position of extended bits include at least one of the following: 1 bit reserved in the random access response RAR; 2 bits reserved in the back-off indication BI; 1 bit left; the temporary cell wireless network temporarily recognizes at least one bit multiplexed in the TC-RNTI; one bit represented by the odd and even number of the time slot number where the RAR is located.
  • At least one bit corresponding to the TC-RNTI is a low-order bit of the TA value indicated by the TA instruction.
  • the communication device of the embodiment shown in FIG. 14 can be used to implement the technical solutions of the foregoing method embodiments. For its implementation principles and technical effects, you can further refer to the related descriptions in the method embodiments.
  • the communication device may be a network device or It can be a component of a network device (such as a chip or circuit).
  • FIG. 15 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 150 includes: a receiving module 1501 and a determining module 1502; wherein, the receiving module 1501 is configured to receive a TA instruction from a first device, the TA instruction includes extended bits, and the TA instruction uses In order to indicate the round-trip transmission delay or the round-trip transmission delay difference between the first device and the second device, the number of bits of the TA instruction is greater than 12 bits; the determining module 1502 is used to determine the number of bits according to the second device The number of extended bits and the position of the extended bits of the TA command are determined.
  • the communication device 150 further includes a sending module 1503, and the sending module 1503 is configured to determine the number of extended bits and extended bits of the TA instruction according to the subcarrier interval of the second device by the determining module 1502 After the position, according to the TA value indicated by the TA instruction, data is sent to the first device.
  • the determining module 1502 determines the number of extended bits and the position of the extended bits of the TA instruction according to the sub-carrier spacing of the second device, it is specifically configured to: according to the sub-carrier spacing and the sub-carrier spacing of the second device. The size of the cell to which the second device belongs, the number of extended bits and the position of the extended bits of the TA instruction are determined.
  • the number of extended bits and the position of extended bits include at least one of the following: 1 bit reserved in the random access response RAR; 2 bits reserved in the back-off indication BI; 1 bit left; the temporary cell wireless network temporarily recognizes at least one bit multiplexed in the TC-RNTI; one bit represented by the odd and even number of the time slot number where the RAR is located.
  • At least one bit corresponding to the TC-RNTI is a low-order bit of the TA value indicated by the TA instruction.
  • the communication device of the embodiment shown in FIG. 15 can be used to implement the technical solutions of the above method embodiments.
  • the communication device may be a terminal or It is a component of the terminal (such as a chip or circuit).
  • FIG. 16 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 160 includes: a determining module 1601 and a sending module 1602; wherein the determining module 1601 is configured to determine the scaling value corresponding to the TA value indicated by the TA instruction according to the subcarrier interval of the second device; the sending module 1602 is configured to send the TA instruction to the second device, and the scaling value is used to adjust the range of the TA value indicated by the TA instruction.
  • the determining module 1601 when determining the scaling value corresponding to the TA value indicated by the TA instruction according to the subcarrier interval of the second device, is specifically configured to: according to the subcarrier interval and the subcarrier interval of the second device The size of the cell to which the second device belongs, and the scaling value corresponding to the TA value indicated by the TA instruction is determined.
  • the sending module 1602 is further configured to send indication information to the second device, where the indication information is used to indicate whether the TA value corresponds to a scaling value.
  • the indication information includes at least one of the following: reserved bits in the random access response RAR; reserved bits in the back-off indication BI; reserved bits in the uplink authorization UL-grant; temporary cell wireless network Temporarily identify at least one bit corresponding to TC-RNTI; one bit represented by the odd and even number of the slot number where the RAR is located.
  • the communication device of the embodiment shown in FIG. 16 can be used to implement the technical solutions of the above method embodiments. For its implementation principles and technical effects, you can further refer to the corresponding descriptions in the method embodiments, which will not be repeated here.
  • the communication device It can be a network device or a component of a network device (such as a chip or circuit).
  • FIG. 17 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 170 includes: a receiving module 1701 and a determining module 1702; wherein, the receiving module 1701 is used to receive the TA instruction sent by the first device; the determining module 1702 is used to receive the subcarrier of the second device Interval, determining the scaling value corresponding to the TA value indicated by the TA instruction, and the scaling value is used to adjust the range of the TA value indicated by the TA instruction.
  • the determining module 1702 is further configured to: according to the TA indicated by the TA instruction The value and the scaling value determine the TA value used when the second device sends data to the first device.
  • the determining module 1702 when determining the scaling value corresponding to the TA value indicated by the TA instruction according to the subcarrier interval of the second device, is specifically configured to: The size of the cell to which the second device belongs, and the scaling value corresponding to the TA value indicated by the TA instruction is determined.
  • the receiving module 1701 is further configured to: receive indication information of the first device, where the indication information is used to indicate whether the TA value corresponds to a scaling value.
  • the indication information includes at least one of the following: reserved bits in the random access response RAR; reserved bits in the back-off indication BI; reserved bits in the uplink authorization UL-grant; temporary cell wireless network Temporarily identify at least one bit corresponding to TC-RNTI; one bit represented by the odd and even number of the slot number where the RAR is located.
  • the communication device of the embodiment shown in FIG. 17 can be used to implement the technical solutions of the foregoing method embodiments. Its implementation principles and technical effects are similar, and will not be repeated here.
  • the communication device may be a terminal or a component of the terminal (such as a chip). Or circuit).
  • the division of the various modules of the communication device shown in FIGS. 14-17 above is only a division of logical functions, and may be fully or partially integrated into one physical entity during actual implementation, or may be physically separated.
  • these modules can all be implemented in the form of software called by processing elements; they can also be implemented in the form of hardware; part of the modules can be implemented in the form of software called by the processing elements, and some of the modules can be implemented in the form of hardware.
  • the determination module may be a separately established processing element, or it may be integrated in a communication device, such as a network device or a terminal chip, and it may also be stored in the memory of the communication device in the form of a program.
  • One of the processing elements calls and executes the functions of the above modules.
  • each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital singnal processor, DSP), or, one or more Field Programmable Gate Array (Field Programmable Gate Array, FPGA), etc.
  • ASIC application specific integrated circuits
  • DSP digital singnal processor
  • FPGA Field Programmable Gate Array
  • the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call programs.
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • FIG. 18 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device may specifically be a network device such as a base station.
  • the base station includes: an antenna 181, a radio frequency device 182, and a baseband device 183.
  • the antenna 181 is connected to the radio frequency device 182.
  • the radio frequency device 182 receives the information sent by the terminal through the antenna 181, and sends the information sent by the terminal to the baseband device 183 for processing.
  • the baseband device 183 processes the terminal information and sends it to the radio frequency device 182, and the radio frequency device 182 processes the terminal information and sends it to the terminal via the antenna 181.
  • the above communication device may be located in the baseband device 183.
  • the above modules are implemented in the form of a processing element dispatcher.
  • the baseband device 183 includes a processing element and a storage element.
  • the processing element 1831 calls the program stored in the storage element 1832 to Perform the method in the above method embodiment.
  • the baseband device 183 may also include an interface 1833 for exchanging information with the radio frequency device 182.
  • the interface is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the above modules may be one or more processing elements configured to implement the above methods. These processing elements are provided on the baseband device 183.
  • the processing elements here may be integrated circuits, for example: one or more One ASIC, or, one or more DSP, or, one or more FPGA, etc. These integrated circuits can be integrated together to form a chip.
  • the above modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • the baseband device 183 includes an SOC chip for implementing the above method.
  • the processing element 1831 and the storage element 1832 can be integrated in the chip, and the processing element 1831 can call the stored program of the storage element 1832 to realize the above methods or the functions of the above modules; or, the chip can integrate at least one integrated circuit, using In order to realize the above methods or the functions of the above modules; or, it can be combined with the above implementations.
  • the functions of some modules are realized in the form of calling programs by processing elements, and the functions of some modules are realized in the form of integrated circuits.
  • the above communication device includes at least one processing element, a storage element and a communication interface, wherein at least one processing element is used to execute the method provided in the above method embodiment.
  • the processing element can execute part or all of the steps in the above method embodiments in the first way: that is, executing the program stored by the storage element; or in the second way: that is, combined with the integrated logic circuit of the hardware in the processing element.
  • the processing element here is the same as the above description, and it can be a general-purpose processor, such as a central processing unit (CPU), or one or more integrated circuits configured to implement the above methods, such as one or more specific Integrated circuit (Application Specific Integrated Circuit, ASIC), or, one or more microprocessors (digital single processor, DSP), or, one or more Field Programmable Gate Array (Field Programmable Gate Array, FPGA), etc.
  • the storage element can be a memory or a collective term for multiple storage elements.
  • FIG. 19 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication device 190 includes a processor 192 and a transceiver device 193.
  • the transceiver device 193 may also be a transceiver.
  • the transceiver 193 receives a TA instruction from a network device, the TA instruction includes an extension bit, where the TA instruction is used to indicate the round-trip transmission delay or the round-trip transmission delay between the first device and the second device Otherwise, the number of bits of the TA command is greater than 12 bits, and the number of extended bits and the position of the extended bits of the TA command are determined according to the subcarrier spacing. Further, it also includes a memory 191 for storing computer programs or instructions, and the processor 192 for calling the programs or instructions.
  • the communication device of the embodiment shown in FIG. 19 can be used to implement the technical solutions of the above method embodiments. For its implementation principles and technical effects, you can further refer to the related descriptions in the method embodiments, which will not be repeated here.
  • the communication device may be a terminal. It can also be a component of the terminal (such as a chip or a circuit).
  • the transceiver 193 may be connected to an antenna.
  • the transceiver 193 receives information sent by the base station through an antenna, and sends the information to the processor 192 for processing.
  • the processor 192 processes the data of the terminal and sends it to the base station through the transceiver 193.
  • the processor 192 may be used to implement corresponding functions in the determining module 1502 of the communication device shown in FIG. 15, and the transceiver device may be used to implement corresponding functions of the receiving module 1501 of the communication device shown in FIG. 15.
  • the processor 192 may be used to implement the corresponding functions in the determining module 1702 of the communication device shown in FIG. 17, and the transceiver device may be used to implement the corresponding functions of the receiving module 1701 of the communication device shown in FIG.
  • part or all of the above modules can also be implemented by embedding on a certain chip of the terminal in the form of an integrated circuit. And they can be implemented separately or integrated together. That is, the above modules can be configured as one or more integrated circuits that implement the above methods, for example: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital singnal processors). , DSP), or, one or more Field Programmable Gate Array (FPGA), etc.
  • ASIC application specific integrated circuits
  • microprocessors digital singnal processors
  • DSP digital singnal processors
  • FPGA Field Programmable Gate Array
  • the embodiments of the present application also provide a computer-readable storage medium in which a computer program is stored, which when running on a computer, causes the computer to execute the timing advance instruction method described in the above-mentioned embodiments.
  • an embodiment of the present application also provides a computer program product, which includes a computer program, which when running on a computer, causes the computer to execute the timing advance instruction method described in the foregoing embodiment.
  • an embodiment of the present application further provides a processor, which includes: at least one circuit, configured to execute the timing advance indication method as described in the foregoing embodiment.
  • an embodiment of the present application also provides a system, which includes the terminal and network equipment as described above.
  • the computer may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium, (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk).
  • the embodiment of the present application also provides a communication device.
  • the communication device may be a terminal or a component (such as a chip or a circuit) of the terminal, or the The communication device may be a network device, or a component (such as a chip or a circuit) of the network device.
  • the communication device is used to implement the methods in the foregoing embodiments. Part or all of the methods in the foregoing embodiments may be implemented by hardware or software.
  • the communication device 1000 includes: an input interface circuit 1002, a logic circuit 1004, and an output interface circuit 1006.
  • the communication device 1000 further includes a transceiver 1008 and an antenna 1010, and the transceiver 1008 transmits and receives data through the antenna 1010.
  • the logic circuit 1004 is used to execute the timing advance indication method shown in FIG. 8 or FIG. 12.
  • the aforementioned communication device 1000 may be a chip or an integrated circuit.

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Abstract

本申请实施例提供一种定时提前的指示方法、通信装置及存储介质，该方法包括：第一设备根据第二设备的子载波间隔，确定定时提前TA指令的扩展比特个数和扩展比特位置；第一设备向第二设备发送TA指令，TA指令包括扩展比特，该TA指令的比特位数大于12比特。通过第一设备根据第二设备的子载波间隔，确定定时提前TA指令的扩展比特个数和扩展比特位置，并将该第一部分即扩展比特和现有的第二部分构成该TA指令，从而实现了对TA指令的扩展，相比于现有的第二部分可以指示的TA值，该TA指令对应的位数更多，可有效增大该TA指令所指示的TA值范围，从而能够满足NTN***的需求。

Description

定时提前的指示方法、通信装置及存储介质
本申请要求于2019年09月30日提交中国专利局、申请号为201910944749.4、申请名称为“定时提前的指示方法、通信装置及存储介质”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
本申请涉及通信技术领域，特别涉及定时提前的指示方法、通信装置及存储介质。
背景技术
随着通信技术的发展，5G新无线(New Radio，NR)技术已经进入商业部署阶段。目前，已经发布的NR技术标准是针对陆地通信***设计的。目前，第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)组织正在引领各研究院、公司参与研究非陆地网络(Non-Terrestrial Networks,NTN)通信标准。
但是，在陆地网络中，终端和网络设备之间的海拔高度相差不大。而在NTN中，终端和网络设备之间的海拔高度相差较大，导致NTN中信号的往返传输时延或往返传输时延差较大。而较大的往返传输时延或往返传输时延差又会导致网络设备给终端发送的定时提前(Timing Advance,TA)值较大，从而导致现有技术中的TA指令所指示的TA值范围可能无法满足NTN的需求。
发明内容
本申请提供了一种定时提前的指示方法、通信装置及存储介质，以增大TA指令所指示的TA值范围，从而能够满足NTN***的需求。
第一方面，本申请提供了一种定时提前的指示方法，具体的，第一设备(例如网络设备)向第二设备(例如终端)发送的TA指令可包括两部分，分别为第一部分和第二部分，第一部分是该TA指令的扩展比特，第二部分是现有技术中TA指令的比特部分。当现有的TA指令所能指示的TA值的范围不能满足NTN***的需求时，第一设备(例如网络设备)根据第二设备(例如终端)的子载波间隔，确定该TA指令的扩展比特个数和扩展比特位置，并将第一部分和第二部分构成的TA指令发送给第二设备，也就是说，所述第二部分结合所述第一部分表示所述TA指令指示的TA值，TA指令用于指示第一设备和第二设备之间的往返传输时延或往返传输时延差，TA指令的比特位数大于12比特。通过本实施例提供的方案，实现了对TA指令的比特扩展，有效增大了该TA指令所指示的TA值的范围，从而能够满足NTN***的需求。
在一种可能的设计中，所述第一设备根据所述第二设备的子载波间隔和所述第二设备所属小区的大小，确定所述TA指令的扩展比特个数和扩展比特位置。通过本实施例提供的方案，可使得第一设备可以向不同小区中的第二设备发送TA指令，为不同小区中的第二设备提供通信服务。
在一种可能的设计中，所述扩展比特个数和扩展比特位置包括如下至少一种：随机接入响应RAR中预留的1比特；回退指示BI中预留的2比特；上行授权UL-grant中预留的1比特；临时小区无线网络临时识别TC-RNTI中复用的至少一个比特；RAR所在时隙号的奇偶数所表示的一个比特。通过预留比特、TC-RNTI的复用比特或RAR所在时隙号的奇偶数所表示的一个比特可以对TA指令进行比特扩展，使得TA指令可以指示更大范围的TA值，满足了NTN***的需求。另外，通过多种比特相联合的方式，可进一步提高TA指令所指示的TA值的范围。
在一种可能的设计中，所述TC-RNTI对应的至少一个比特为所述TA指令指示的TA值的低位比特。通过本实施例提供的方案，可使得不同场景下的终端和网络设备都可以使用到TC-RNTI隐式方式表示的一个或多个比特，从而提高了资源利用率。
第二方面，本申请提供一种定时提前的指示方法，该方法包括：第二设备从第一设备接收TA指令，所述TA指令包括扩展比特，其中，所述TA指令用于指示所述第一设备和所述第二设备之间的往返传输时延或往返传输时延差，所述TA指令的比特位数大于12比特；所述第二设备根据所述第二设备的子载波间隔，确定所述TA指令的扩展比特个数和扩展比特位置。通过第二设备根据该第二设备的子载波间隔解析出该TA指令中的扩展比特个数和扩展比特位置，进一步，第二设备结合扩展比特和现有的第二部分得到该TA指令所指示的TA值，相比于现有的第二部分可以指示的TA值，第二设备可以接收到更大的TA值，当第一设备和第二设备是NTN***中的通信设备时，通过对TA指令的扩展，可有效增大该TA指令所指示的TA值范围，从而能够满足NTN***的需求。
在一种可能的设计中，所述第二设备根据所述第二设备的子载波间隔，确定所述TA指令的扩展比特个数和扩展比特位置之后，所述方法还包括：所述第二设备根据所述TA指令指示的TA值，向所述第一设备发送数据。
在一种可能的设计中，所述第二设备根据所述第二设备的子载波间隔，确定所述TA指令的扩展比特个数和扩展比特位置，包括：所述第二设备根据所述第二设备的子载波间隔和所述第二设备所属小区的大小，确定所述TA指令的扩展比特个数和扩展比特位置。
在一种可能的设计中，所述扩展比特个数和扩展比特位置包括如下至少一种：随机接入响应RAR中预留的1比特；回退指示BI中预留的2比特；上行授权UL-grant中预留的1比特；临时小区无线网络临时识别TC-RNTI中复用的至少一个比特；RAR所在时隙号的奇偶数所表示的一个比特。
在一种可能的设计中，所述TC-RNTI对应的至少一个比特为所述TA指令指示的TA值的低位比特。
第三方面，本申请提供一种定时提前的指示方法，该方法包括：第一设备根据第二设备的子载波间隔，确定TA指令指示的TA值对应的缩放值；所述第一设备向所述第二设备发送所述TA指令，所述缩放值用于调整所述TA指令指示的TA值的范围。通过子载波间隔确定TA指令指示的TA值对应的缩放值，由于该缩放值可用于调整TA指令指示的TA值的范围，因此，根据TA指令指示的TA值和该缩放值可确定出能够指示更大范围的TA值，从而能够满足NTN***的需求。
在一种可能的设计中，所述第一设备根据第二设备的子载波间隔，确定TA指令指示的TA值对应的缩放值，包括：所述第一设备根据所述第二设备的子载波间隔和所述第二设备所属小区的大小，确定所述TA指令指示的TA值对应的缩放值。
在一种可能的设计中，所述方法还包括：所述第一设备向所述第二设备发送指示信息，所述指示信息用于指示所述TA值是否对应有缩放值。通过本实施例提供的方案，可增加缩放值的灵活性。
在一种可能的设计中，所述指示信息包括如下至少一种：随机接入响应RAR中的预留比特；回退指示BI中的预留比特；上行授权UL-grant中的预留比特；临时小区无线网络临时识别TC-RNTI对应的至少一个比特；RAR所在时隙号的奇偶数所表示的一个比特。
第四方面，本申请提供一种定时提前的指示方法，该方法包括：第二设备接收第一设备发送的TA指令；所述第二设备根据所述第二设备的子载波间隔，确定所述TA指令指示的TA值对应的缩放值，所述缩放值用于调整所述TA指令指示的TA值的范围。通过子载波间隔确定TA指令指示的TA值对应的缩放值，由于该缩放值可用于调整TA指令指示的TA值的范围，因此，根据TA指令指示的TA值和该缩放值可确定出能够指示更大范围的TA值，从而能够满足NTN***的需求。
在一种可能的设计中，所述第二设备根据所述第二设备的子载波间隔，确定所述TA指令指示的TA值对应的缩放值之后，所述方法还包括：所述第二设备根据所述TA指令指示的TA值和所述缩放值，确定所述第二设备向所述第一设备发送数据时采用的TA值。
在一种可能的设计中，所述第二设备根据所述第二设备的子载波间隔，确定所述TA指令指示的TA值对应的缩放值，包括：所述第二设备根据所述第二设备的子载波间隔和所述第二设备所属小区的大小，确定所述TA指令指示的TA值对应的缩放值。
在一种可能的设计中，所述方法还包括：所述第二设备接收所述第一设备的指示信息，所述指示信息用于指示所述TA值是否对应有缩放值。通过本实施例提供的方案，可增加缩放值的灵活性。
在一种可能的设计中，所述指示信息包括如下至少一种：随机接入响应RAR中的预留比特；回退指示BI中的预留比特；上行授权UL-grant中的预留比特；临时小区无线网络临时识别TC-RNTI对应的至少一个比特；RAR所在时隙号的奇偶数所表示的一个比特。
第五方面，本申请提供一种通信装置，包括用于实现上述第一方面、第二方面、第三方面或第四方面所述的方法的模块，部件或者电路。
第六方面，本申请提供一种通信装置，包括：
处理器和收发器，处理器和收发器通过内部连接互相通信；
所述处理器用于执行如第一方面、第二方面、第三方面或第四方面所述的方法中的处理步骤，所述收发器用于执行如第一方面、第二方面、第三方面或第四方面所述的方法中的收发步骤。
在一种可能的设计中，第六方面中的通信装置可以为网络设备或终端，也可以为网络设备或终端的部件(例如芯片或者电路)。
在另一种可能的设计中，第六方面中的通信装置还可以包括存储器，所述存储器用于存储计算机程序，所述处理器用于执行所述存储器中存储的计算机程序，以使得所述通信装置执行如第一方面、第二方面、第三方面或第四方面所述的方法。
第七方面，本申请提供一种通信装置，包括：输入接口电路、逻辑电路和输出接口电路，其中，所述逻辑电路用于执行如第一方面、第二方面、第三方面或第四方面所述的方法。
第八方面，本申请提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序，计算机程序包括用于执行如第一方面、第二方面、第三方面或第四方面所述的方法的指令。
第九方面，本申请提供一种计算机程序，计算机程序包括用于执行如第一方面、第二方面、第三方面或第四方面所述的方法的指令。
在一种可能的设计中，第九方面中的程序可以全部或者部分存储在与处理器封装在一起的存储介质上，也可以部分或者全部存储在不与处理器封装在一起的存储器上。
第十方面，本申请实施例还提供一种***，包括上述第五方面、第六方面或者第七方面所述的通信装置。
第十一方面，本申请实施例还提供一种处理器，该处理器包括：至少一种电路，用于执行如第一方面、第二方面、第三方面或第四方面所述的方法。
第十二方面，本申请实施例还提供一种通信装置，该通信装置包括：存储器和处理器，其中，所述存储器用于存储计算机程序；所述处理器用于执行所述存储器中存储的计算机程序，以使得所述通信装置执行如第一方面、第二方面、第三方面或第四方面所述的方法。
可见，在以上各个方面，通过第一设备根据第二设备的子载波间隔，确定定时提前TA指令的扩展比特个数和扩展比特位置，并向第二设备发送TA指令，该TA指令用于指示所述第一设备和所述第二设备之间的往返传输时延或往返传输时延差，该TA指令包括扩展比特，该TA指令的比特位数大于12比特，由于现有的TA指令的比特位数为12比特，因此，相比于现有的TA指令，本申请中的TA指令的比特位数更多，可指示更大范围的TA值。当第一设备和第二设备是NTN***中的通信设备时，通过对TA指令的扩展，可有效增大该TA指令所指示的TA值范围，从而能够满足NTN***的需求。
附图说明
图1为本申请实施例提供的一种应用场景示意图；
图2为本申请实施例提供的一种卫星通信***的示意图；
图3为现有技术中的一种上行数据帧和下行数据帧同步的示意图；
图4为现有技术中的另一种上行数据帧和下行数据帧同步的示意图；
图5为现有技术中LTE/NR协议中的随机接入流程；
图6为现有技术中RAR信息的帧格式示意图；
图7为现有技术中卫星通信***的示意图；
图8为本申请实施例提供的一种定时提前的指示方法流程图；
图9为现有技术中BI指令的帧格式示意图；
图10为现有技术中UL-grant指令的帧格式示意图；
图11为本申请实施例提供的一种终端最小仰角和需要的最小TA指示范围之间的关系示意图；
图12为本申请实施例提供的一种定时提前的指示方法流程图；
图13为本申请实施例提供的一种通信装置的结构示意图；
图14为本申请实施例提供的一种通信装置的结构示意图；
图15为本申请实施例提供的另一种通信装置的结构示意图；
图16为本申请实施例提供的另一种通信装置的结构示意图；
图17为本申请实施例提供的另一种通信装置的结构示意图；
图18为本申请实施例提供的又一种通信装置的结构示意图；
图19为本申请实施例提供的又一种通信装置的结构示意图；
图20为本申请实施例提供的又一种通信装置的结构示意图。
具体实施方式
本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释，而非旨在限定本申请。
本申请实施例可应用于各种类型的通信***。图1为本申请实施例提供的一种应用场景示意图。如图1所示的通信***，主要包括网络设备11和终端12。
其中，1)网络设备11可以是网络侧设备，例如，无线局域网(Wireless Local Area Network，WLAN)的接入点(Access Point,AP)、4G的演进型基站(Evolved Node B，eNB或eNodeB)、下一代通信的基站，如5G的新无线接入技术(New Radio Access
Technology，NR)基站(next generation Node B，gNB)或小站、微站，还可以是中继站、发送和接收点(Transmission and Reception Point，TRP)、路边单元(Road Side Unit,RSU)等。在本实施例中，不同通信制式的通信***中的基站不同。为了区别起见，将4G通信***的基站称为长期演进(Long Term Evolution，LTE)eNB，5G通信***的基站称为NR gNB，既支持4G通信***又支持5G通信***的基站称为演进型长期演进(Evolutional Long Term Evolution，eLTE)eNB,这些名称仅为了方便区别，并不具有限制意义。
2)终端12又称之为用户设备(User Equipment，UE)，是一种向用户提供语音和/或数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备、具有车与车(vehicle to vehicle，V2V)通信能力的车辆等。常见的终端例如包括：手机、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，例如智能手表、智能手环、计步器等。
3)“多个”是指两个或两个以上，其它量词与之类似。“和/或”，描述关联对象的对应关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
需要说明的是，图1所示的通信***中所包含的终端12的数量和类型仅仅是一种举例，本申请实施例并不限制于此。例如，还可以包括更多的与网络设备11进行通信 的终端12，为简明描述，不在附图中一一描述。此外，在如图1所示的通信***中，尽管示出了网络设备11和终端12，但是该通信***可以并不限于包括网络设备11和终端12，例如还可以包括核心网节点或用于承载虚拟化网络功能的设备等，这些对于本领域技术人员而言是显而易见的，在此不一一赘述。
另外，本申请实施例不仅可应用于4G无线通信***、车对外界(vehicle to everything，V2X)通信***、设备到设备(Device-to-Device,D2D)通信***、LTE的后续演化等通信***，还可应用于下一代无线通信***,即5G通信***，以及应用于未来可能出现的其他***,例如下一代的wifi网络、5G车联网、NTN***等。
需要说明的是，随着通信***的不断演进，未来可能出现的其他***中，上述各个网元的名称可能会发生变化，在这种情况下，本申请实施例提供的方案同样适用。
下面以NTN***为例，该NTN***具体可以是卫星通信***或其他非陆地的网络***。本实施例以如图2所示的卫星通信***为例，20表示卫星的一个覆盖区域，该覆盖区域中可存在多个终端。该覆盖区域可以是卫星的一个或多个波束所覆盖的区域，或者是同NR***中的小区级别相同的区域。21表示该覆盖区域中的一个参考点，具体的，该参考点可以是该覆盖区域中距离卫星最近的一个点，参考点21也可记为近端。22表示该覆盖区域中除参考点之外的任意一点，例如，22表示该覆盖区域中距离卫星最远的一个点，在这种情况下，点22也可记为远端。终端23和终端24是该覆盖区域中任意的两个终端，由于终端相对于卫星的距离较远，因此，终端和卫星之间信号的往返传输时延较大。在一些情况下，可以将近端与卫星之间的距离作为覆盖区域20中的公共传输距离。相应的，信号在该公共传输距离上进行往返传输时会产生公共往返传输时延，此处，将该公共往返传输时延记为公共TA值，终端和卫星之间信号的往返传输时延与该公共往返传输时延之间的差值可记为往返传输时延差。
在NTN***中，由于终端和网络设备(例如基站)之间的距离较远，例如，基站或卫星与终端之间的海拔高度差一般会大于500千米，所以在NTN***中同一小区内终端的往返传输时延远大于陆地通信***(例如NR***)中同一小区内终端的往返传输时延，NTN***中同一小区内终端的往返传输时延差也远大于陆地通信***(例如NR***)中同一小区内终端的往返传输时延差。而较大的往返传输时延或往返传输时延差又会导致网络设备给终端发送的定时提前(Timing Advance,TA)值较大。可以理解的是，NTN***中的一个小区可以是卫星的一个波束在地面上的投影区域，也可以是卫星的多个波束在地面上的投影区域，或者还可能是一个波束或多个波束在地面上的投影区域的部分区域。
如图3所示为NR***中的定时提前，即终端发送的上行数据帧在该终端对应的下行数据帧之前传输，上行数据帧比下行数据帧提前传输的时间记为定时提前TA，该TA值反映了NR***中终端和网络设备之间的信号往返传输时延。如图4所示为NTN***中的定时提前，该TA值反映了NTN***中终端和网络设备之间的信号往返传输时延。通过比较如图3和图4可知，NTN***中的定时提前大于NR***中的定时提前。如此会导致现有技术中的TA指令所指示的TA值范围可能无法满足NTN的需求。
例如，图5所示为NR***中终端申请接入网络的过程，具体的，步骤1，终端向 网络设备发送随机接入前导，该随机接入前导具体可以是终端从规定的集合中选取的一个前导序列。步骤2，网络设备向终端发送随机接入响应(Random Access Response，RAR)，该随机接入响应中可包括前导序列标识、TA值、上行授权(Uplink Grant，UL-grant)、临时小区无线网络临时标识号(Temporary Cell-Radio Network Temporary Identifier，TC-RNTI)。步骤3，终端向网络设备发送层2/层3(Layer 2/Layer 3，L2/L3)消息，该L2/L3消息中可包括C-RNTI、终端标识。步骤4，网络设备向终端发送竞争解决消息。在一些情况下，终端在发送随机接入前导之前，还需要获取与网络设备的下行同步和随机接入时机(Random Access Channel Occasion，RO)配置。
如图6所示为RAR的帧格式，其中，TA指令占用了12个比特。此处将TA指令所指示的TA值记为T A，当终端接收到网络设备发送的TA指令后，根据TA指令所指示的TA值T A可计算出TA的时间调整值N TA，N TA＝T A·16·64/2 μ·T c，其中，T c＝0.509×10 -6毫秒，T A的最大表示值为3846，μ与子载波间隔(Sub Carrier Spacing,SCS)相关，具体的，子载波间隔越大，μ越大，相应的N TA越小。这里的子载波间隔是指终端接收到RAR之后发送的第一个上行数据的子载波间隔。可以理解的是，网络设备向终端发送RAR之前，网络设备已经将终端的子载波间隔配置给了终端，即在发送RAR之前，网络设备和终端均已知终端的子载波间隔。可以理解的是，当子载波间隔为15kHz时，根据T A的最大值3846，可计算出N TA的最大值，N TA的最大值大约为2毫秒。如下表1示出了子载波间隔、μ值、N TA的最大值之间的对应关系。
表1
μ值 子载波间隔 N TA的最大值(毫秒)
0 15kHz 2.0046
1 30kHz 1.0023
2 60kHz 0.50115
3 120kHz 0.25057
4 240kHz 0.12529
根据表1可知，随着子载波间隔的增大，N TA的最大值以2倍的速度在减小。当子载波间隔为240kHz时，N TA的最大值为0.12529毫秒。但是在NTN***中，一些场景中需要N TA能够表示的时间将大于NR***中N TA可以表示的时间。例如，根据卫星轨道高度可以将卫星通信***划分为同步轨道(Geostationary Earth Orbit,GEO)***，中轨(Medium Earth Orbit,MEO)卫星通信***和低轨(Low Earth Orbit,LEO)卫星通信***。GEO卫星通信***、MEO卫星通信***或LEO卫星通信***中又会存在大小不同的小区，此处选择小区直径来衡量小区大小。通常情况下，卫星通信***中的小区直径在一个预设范围内，例如，100千米到1500千米。下面选择几个小区直径的数值进行示意性说明，如表2所示，在GEO卫星通信***中，当小区直径为500千米、终端的最小仰角为10度时，需要N TA能够表示的最大时间为3.2557毫秒，而现有的TA指令所指示的TA值对应的N TA只能指示最大值2.0046毫秒，即现有的TA指令所指示的TA值无法满足NTN***的需求。再例如，在LEO卫星通信***中，当小区直径为200千米、终端的最小仰角为10度时，需要N TA能够表示的最大时间为1.3076毫秒，当终端的子载波间隔大于15kHz时，现有的TA指令所指示的TA值对 应的N TA将无法满足该场景的需求。在LEO卫星通信***中，当小区直径为100千米、终端的最小仰角为10度时，需要N TA能够表示的最大时间为0.655毫秒，当终端的子载波间隔大于30kHz时，现有的TA指令所指示的TA值对应的N TA将无法满足该场景的需求。其中，终端的仰角具体可以是如图7所示的通信仰角。
表2
Figure PCTCN2020115346-appb-000001
为了解决如上所述的现有的TA指令所指示的TA值无法满足NTN***需求的问题，本申请实施例提出了一种定时提前的指示方法，下面结合具体的实施例对该定时提前的指示方法进行介绍。
图8为本申请实施例提供的一种定时提前的指示方法流程图。如图8所示，本实施例所述的定时提前的指示方法包括如下步骤：
S81、第一设备根据第二设备的子载波间隔，确定定时提前TA指令的扩展比特个数和扩展比特位置。
在本实施例中，第一设备可以是网络设备，第二设备可以是终端。或者，第一设备可以是终端，第二设备可以是网络设备。下面以第一设备为网络设备、第二设备为终端进行示意性说明。另外，需要说明的是，本实施例中的TA指令包括两部分，分别记为第一部分和第二部分，其中，第一部分是根据子载波间隔来确定的，第二部分是现有技术中的TA指令即如图6所示的12比特的部分。第一部分可以看作TA指令的扩展部分或扩展比特，根据子载波间隔可确定出扩展比特个数和扩展比特位置。具体的，扩展比特可以是现有字段、指令或信令中的预留比特、复用比特或隐式表示的比特。网络设备和终端可以预先约定子载波间隔和扩展比特之间的对应关系。
当网络设备需要向终端发送TA指令时，确定现有的12比特的TA指令所指示的TA值是否能够满足NTN***的需求，若不能满足，则根据该终端的子载波间隔，确定与该子载波间隔对应的扩展比特，并将该扩展比特作为该TA指令的扩展比特即第一部分，并将扩展比特加上现有的12比特部分构成该TA指令，因此，在本申请实施例中，TA指令的比特位数大于12比特。
S82、第一设备向第二设备发送TA指令，所述TA指令包括扩展比特，所述TA指令用于指示所述第一设备和所述第二设备之间的往返传输时延或往返传输时延差，所述TA指令的比特位数大于12比特。
可以理解的是，当TA指令不需要扩展比特时，第二部分表示的TA值的范围即可满足第二设备向第一设备发送信号时第二设备所使用的TA值的需求。当TA指令需要扩展比特时，第一部分和第二部分整体所指示的TA值用于指示第二设备向第一设备发送信号时第二设备所使用的TA值。
网络设备将TA指令发送给终端，相应的，终端接收网络设备发送的TA指令。
S83、第二设备根据第二设备的子载波间隔，确定TA指令的扩展比特个数和扩展比特位置。
当终端接收到该网络设备发送的TA指令后，该终端可根据自己的子载波间隔，确定出该TA指令中的扩展比特即第一部分，例如，扩展比特个数和扩展比特位置。进一步，从RAR信息中解析出现有的12比特部分即第二部分，并确定第一部分和第二部分整体所指示的TA值，并根据该TA值计算时间调整值N TA，并根据N TA向网络设备发送上行数据，即将该N TA作为终端发送上行数据的定时提前的参考值。
可以理解的是，本申请实施例所述的TA指令指示的TA值可能有如下几种情况：
一种可能的情况是：终端在向网络设备发送随机接入前导之前，网络设备会广播公共TA值，当网络设备接收到终端的随机接入前导后，向终端发送RAR信息时，该RAR信息中承载的TA指令指示的TA值为终端和卫星之间信号的往返传输时延与公共TA值的差值，该差值可记为终端和卫星之间信号的往返传输时延差。
另一种可能的情况是：终端在向网络设备发送随机接入前导之前，网络设备不广播公共TA值，当网络设备接收到终端的随机接入前导后，向终端发送RAR信息时，该RAR信息中承载的TA指令指示的TA值为终端和卫星之间信号的往返传输时延。
本实施例通过第一设备根据第二设备的子载波间隔，确定定时提前TA指令的扩展比特个数和扩展比特位置，并向第二设备发送TA指令，该TA指令用于指示所述第一设备和所述第二设备之间的往返传输时延或往返传输时延差，该TA指令包括扩展比特，该TA指令的比特位数大于12比特，由于现有的TA指令的比特位数为12比特，因此，相比于现有的TA指令，本申请中的TA指令的比特位数更多，可指示更大范围的TA值。当第一设备和第二设备是NTN***中的通信设备时，通过对TA指令的扩展，可有效增大该TA指令所指示的TA值范围，从而能够满足NTN***的需求。
在上述实施例的基础上，扩展比特个数和扩展比特位置包括如下几种可能的情况：
一种可能的情况是：如图6所示的RAR中的1比特的预留位即预留比特。
另一种可能的情况是：如图9所示的回退指示(Backoff Indicator，BI)中预留的2个比特。其中，BI指令占用8个比特，其中的2个比特是预留位即预留比特。具体的，该BI指令可以在RAR信息中，也可以和RAR信息一起发送给终端。另外，如图9所示的8个比特中后4个比特对应的BI具体为该BI指令指示的数值。
再一种可能的情况是：如图10所示的UL grant信令中的信道状态信息请求所对应的1比特为保留状态，该1比特可用于对TA指令进行扩展。
又一种可能的情况是：如图6所示，TC-RNTI信令占用16个比特，表示范围为1-65519。终端可使用TC-RNTI指令所指示的值对发送的上行数据进行加扰。因此，可以复用TC-RNTI信令的比特，来扩展TA指令的比特。例如，可以从该16个比特中任意选取一个或多个比特，该一个或多个比特既用于表示TA指令的扩展比特，也用于表示TC-RNTI信令所指示的值，即选取的一个或多个比特为复用比特。一种可行的复用方式是：先根据TA指令需要指示的TA值确定该复用的一个或多个比特的取 值，进一步，根据TC-RNTI指令所指示的值确定该16个比特中剩余比特的取值。
又一种可能的情况是：网络设备在向终端发送RAR信息时，RAR信息所在时隙(slot)的时隙号可能是奇数，也有可能是偶数。可以理解的是，一个比特可以表示两种状态，相应的，两种状态可以表示一个比特。因此，RAR信息所在时隙的时隙号为奇数或偶数的这两种状态可用于表示该TA指令扩展的一个比特。也就是说，RAR信息所在时隙的时隙号为奇数或偶数可以隐式表示一个比特。
可以理解的是，上述的几种可能情况只是对TA指令进行扩展的示意性说明，并不限定可用于对TA指令进行扩展的比特或扩展方式。如下表3所示为如上所述的几种可用于对TA指令进行扩展的比特或扩展方式，也就是说，表3可作为对TA指令进行扩展的比特候选池。
表3
Figure PCTCN2020115346-appb-000002
如下表4列出了在不同子载波间隔、不同小区直径的场景下，N TA可表示的最大值以及TA指令需要增加的比特位数。
表4
Figure PCTCN2020115346-appb-000003
在表4中，D表示小区直径。以小区直径小于或等于300千米的场景为例，当子载波间隔为15kHz时，用现有的12比特的TA指令即可满足该场景的需求。但是，随着子载波间隔的增大，12比特已不能满足该场景的需求，因此，需要对该TA指令进行扩展，例如，当子载波间隔为30kHz时，需要扩展1比特。另外，从表4可知，随着小区直径的增大，需要增加的比特位数也在不断增大。
可以理解的是，本申请实施例所述的方法还可以适用于以卫星波束为单位的区域内的终端，相应的，D表示卫星波束的直径，即波束直径。
具体的，网络设备可根据终端所在小区的小区直径，以及表4确定出在不同子载 波间隔的情况下，需要扩展的比特位数。进一步，根据需要扩展的比特位数，在表3所示的比特候选池中确定出采用哪几个比特作为扩展比特。同时，网络设备和终端可以预先约定好不同的子载波间隔所对应的扩展比特，包括扩展比特的个数和扩展比特的位置。进一步，网络设备根据该终端的子载波间隔，确定该子载波间隔所对应的扩展比特，并根据该扩展比特来扩展TA指令对应的比特位，并向终端发送扩展后的TA指令。终端在接收到该TA指令后，根据该终端的子载波间隔、以及该终端和网络设备预先约定好的不同的子载波间隔所对应的扩展比特，确定该终端的子载波间隔对应的扩展比特，并根据该扩展比特和现有的12比特，确定该TA指令所指示的TA值，作为该终端发送上行数据的定时提前的参考值。
下面结合几个应用场景，对子载波间隔和扩展比特之间的对应关系、以及网络设备和终端之间的交互过程进行介绍。
在一种可能的场景中，终端所在小区的小区直径小于或等于300千米，终端的最小仰角为10度。子载波间隔为30kHz、60kHz、120kHz、240kHz时，为了满足N TA表示最大值2毫秒的需求，需要增加的比特位数分别为1、2、3、4个比特，进一步，根据增加的比特位数从表3所示的比特候选池中确定出采用哪几个比特作为扩展比特，如表5所示的子载波间隔和扩展比特之间的对应关系只是一种示意性说明，并不做具体限定。在其他实施例中，还可以有其他的对应关系，例如，还可以是表6所示的对应关系。可以理解的是，本申请实施例所述的方法还可以适用于以卫星波束为单位的区域内的终端，例如，终端位于波束直径小于或等于300千米的区域中。
表5
Figure PCTCN2020115346-appb-000004
表6
Figure PCTCN2020115346-appb-000005
Figure PCTCN2020115346-appb-000006
其中，N/A表示不需要增加TA指令的比特即可满足NTN***的需求。以表5为例进行示意性说明，在该场景中，网络设备和终端预先约定好的子载波间隔和扩展比特之间的对应关系具体可以是表5所示的对应关系。具体的，表5可以由网络设备建立后发送给终端，也可以由终端建立后发送给网络设备。
例如，该终端的子载波间隔为30kHz，网络设备根据表5的对应关系，确定TA指令需要增加1个比特，即该TA指令对应13个比特，其中12个比特是如图6所示的RAR信息中现有的12个比特，1个比特是图9所示的BI中预留的1比特，BI中预留的1比特可以作为该13个比特中的低位比特，也可以是高位比特，还可以是中间比特，此处不做具体限定。进一步，该网络设备将RAR信息和BI指令一起发送给终端。终端在接收到该RAR信息和BI指令后，根据该终端的子载波间隔和表5所示的对应关系，确定出BI中预留的1比特为该TA指令的扩展比特，进一步，将BI中预留的1比特和RAR信息中现有的12比特结合在一起得到该TA指令所指示的TA值，并将该TA值转换为时间调整值N TA，将N TA作为终端发送上行数据的定时提前的参考值。
可以理解的是，在一些实施例中，网络设备和终端还可以预先约定：当需要增加1个比特，并且增加的这1个比特采用的是BI中预留的1比特时，应该采用BI中2个预留位中的哪个比特对TA指令进行扩展。同理，TC-RNTI隐式方式表示的1比特是TC-RNTI对应的16个比特中的哪个比特，也可以由网络设备和终端预先约定，约定的方式此处不做具体限定，例如，可以是发送指示信息的方式，也可以是在表5的基础上进一步增加一些指示信息。
另外，如表5所示的，当子载波间隔为240kHz时，需要采用TC-RNTI隐式方式表示的1比特来扩展TA指令，也就是说，可以用TC-RNTI对应的16比特中的任意1个比特同时表示TA指令的信息比特和TC-RNTI信令的信息比特，因此，将该TC-RNTI隐式方式表示的1比特记为复用比特。例如，可以先根据TA指令需要指示的TA值确定该复用比特的取值，进一步，根据TC-RNTI指令所指示的值确定该16个比特中剩余比特的取值。
本申请实施例通过预留比特，例如BI中的预留比特、UL-grant中的预留比特、
RAR中的预留比特，或者，通过TC-RNTI隐式方式提供的比特，对TA指令进行比特扩展，使得TA指令可以指示更大范围的TA值，满足了NTN***的需求，另外，通过预留比特和TC-RNTI隐式方式提供的比特相联合的方式，可进一步提高TA指令所指示的TA值的范围。
在另一种可能的场景中，终端所在小区的小区直径小于或等于600千米，终端的 最小仰角为10度。子载波间隔为15kHz、30kHz、60kHz、120kHz、240kHz时，为了满足N TA表示最大值4毫秒的需求，需要增加的比特位数分别为1、2、3、4、5个比特，进一步，根据增加的比特位数从表3所示的比特候选池中确定出采用哪几个比特作为扩展比特，子载波间隔和扩展比特之间的对应关系具体如下表7所示，这就是说，终端和网络设备可以预先约定好表7所示的对应关系。可以理解的是，本申请实施例所述的方法还可以适用于以卫星波束为单位的区域内的终端，例如，终端位于波束直径小于或等于600千米的区域中。
表7
Figure PCTCN2020115346-appb-000007
如表7所示的子载波间隔和扩展比特之间的对应关系只是一种示意性说明，并不做具体限定。在其他实施例中，还可以有其他的对应关系。网络设备根据终端的子载波间隔和表7确定出TA指令的扩展比特，并将TA指令发送给终端的过程，以及终端根据子载波间隔和表7确定出TA指令的扩展比特的过程均如上所述，此处不再赘述。另外，TC-RNTI隐式方式表示的1比特的复用方式也如上所述，此处不再赘述。
在又一种可能的场景中，终端所在小区的小区直径小于或等于1200千米，终端的最小仰角为10度。子载波间隔为15kHz、30kHz、60kHz、120kHz、240kHz时，为了满足N TA表示最大值8毫秒的需求，需要增加的比特位数分别为2、3、4、5、6个比特，进一步，根据增加的比特位数从表3所示的比特候选池中确定出采用哪几个比特作为扩展比特，子载波间隔和扩展比特之间的对应关系具体如下表8所示，这就是说，终端和网络设备可以预先约定好表8所示的对应关系。可以理解的是，本申请实施例所述的方法还可以适用于以卫星波束为单位的区域内的终端，例如，终端位于波束直径小于或等于1200千米的区域中。
表8
Figure PCTCN2020115346-appb-000008
如表8所示的子载波间隔和扩展比特之间的对应关系只是一种示意性说明，并不做具体限定。在其他实施例中，还可以有其他的对应关系。例如，当子载波间隔为240kHz时，还可以选择RAR中预留的1比特、BI中预留的2比特、UL-grant中预留的1比特、TC-RNTI隐式方式表示的2比特对TA指令进行扩展。网络设备根据终端的子载波间隔和表8确定出TA指令的扩展比特，并将TA指令发送给终端的过程，以及终端根据子载波间隔和表8确定出TA指令的扩展比特的过程均如上所述，此处不再赘述。另外，TC-RNTI隐式方式表示的1比特的复用方式也如上所述，此处不再赘述。
可以理解的是，通常情况下，小区直径在一个预设范围内，例如，100千米到1500千米，如上所述的小区直径小于或等于300千米、600千米、1200千米的场景只是示意性说明，并不对小区直径进行限定。
另外，可以理解的是，本申请实施例并不限定扩展比特在TA指令整体占用的多位比特中的位置，例如，扩展比特可以作为低位比特、高位比特或中间比特。或者，扩展比特中的一部分比特作为低位比特、另一部分比特作为高位比特或中间比特。
下面以TC-RNTI隐式方式表示的一个或多个比特为例，对TC-RNTI隐式方式表示的一个或多个比特在TA指令整体占用的多位比特中的位置进行介绍。在小区直径为500千米的GEO***、子载波间隔为15kHz的场景中，如图11所示为终端最小仰 角和需要的最小TA指示范围之间的关系。从图中可以看出，当终端的最小仰角小于50度的小区内，需要用到TA大于2毫秒的范围。因此，如果将TC-RNTI隐式方式表示的一个或多个比特作为TA指令的高位比特，那么对于最小仰角大于50度的终端所在的小区可能就用不到TC-RNTI隐式方式表示的一个或多个比特了。而如果将TC-RNTI隐式方式表示的一个或多个比特作为TA指令的低位比特，那么对于最小仰角大于50度的终端所在的小区或者是最小仰角小于50度的终端所在的小区都可以用到TC-RNTI隐式方式表示的一个或多个比特。因此，在上述实施例的基础上，可以将TC-RNTI隐式方式表示的一个或多个比特作为TA指令的低位比特，从而使得不同场景下的终端和网络设备都可以使用到TC-RNTI隐式方式表示的一个或多个比特，从而提高了资源利用率。
可以理解的是，网络设备可以给一个小区的终端提供服务，也可能给多个小区的终端提供服务，当网络设备给固定的一个小区中的终端提供服务时，该网络设备可根据该小区直径的大小，确定出子载波间隔和扩展比特之间的对应关系，例如表5-表8所示的对应关系。进一步，根据该小区中的终端的子载波间隔，确定出需要扩展的比特。在一些场景中，网络设备也有可能给多个不同小区中的终端提供服务，在这种情况下，网络设备需要根据终端的子载波间隔和终端所属小区的直径来确定TA指令的扩展比特。在这种情况下，网络设备和终端可建立或存储如下表9所示的对应关系。
表9
Figure PCTCN2020115346-appb-000009
Figure PCTCN2020115346-appb-000010
表9中的D表示小区直径或波束直径。也就是说，本申请实施例所述的方法不仅适用于小区级别的区域内，还适用于波束级别的区域内。
具体的，网络设备根据终端的子载波间隔、小区直径和表9确定出TA指令的扩展比特，并将TA指令发送给终端的过程，以及终端根据子载波间隔、小区直径和表9确定TA指令的扩展比特的过程均如上所述，此处不再赘述。
可以理解的是，为了降低终端的数据存储量，小区直径小于或等于300千米的终端可以存储有表5或表6所示的对应关系，小区直径小于或等于600千米的终端可以存储有表7所示的对应关系，小区直径小于或等于1200千米的终端可以存储有表8所示的对应关系。
根据上述实施例可知，通过扩展TA指令的比特位，可以有效增加TA指令所指示的TA值的范围，以满足NTN***的需求。但是，在一些场景中，可能无法对TA指令的比特位进行扩展，例如，表3所示的比特候选池可能已被使用，在这种情况下，还可以通过如下实施例所述的方法来满足NTN***的需求。
图12为本申请实施例提供的一种定时提前的指示方法流程图。如图12所示，本实施例所述的定时提前的指示方法包括如下步骤：
S121、第一设备根据第二设备的子载波间隔，确定TA指令指示的TA值对应的缩放值。
在本实施例中，第一设备可以是网络设备，第二设备可以是终端。当网络设备需要向终端发送TA指令时，确定现有的12比特的TA指令所指示的TA值是否能够满足NTN***的需求，若不能满足，则根据终端的子载波间隔，确定该TA指令指示的TA值对应的缩放值。其中，该缩放值用于调整该TA指令指示的TA值的范围。
例如，12比特的TA指令所指示的TA值最大表示值为3846，根据TA值可计算出TA的时间调整值N TA最大值大约为2毫秒，如果当前NTN***需要N TA能够表示最大值4毫秒，终端的子载波间隔为15kHz，终端所属小区的直径小于或等于600千米，根据上述实施例可知需要TA指令增加1个比特，13比特的TA值所能表示的最大值为12比特的TA值所能表示的最大值的2倍，即需要TA指令所指示的TA值增大到原来的2倍。此处，可以将TA值需要增大的倍数记为缩放值，缩放值也叫尺度因子S。如下表10所示为小区直径小于或等于600千米，终端最小仰角为10度时，为了满足NTN***的需求，子载波间隔15kHz、30kHz、60kHz、120kHz、240kHz分别对应的尺度因子S为2、4、8、16、32。其中，尺度因子S是根据TA指令所指示的TA值需要增大的倍数确定的。可以理解的是，针对其他不同的场景中，例如，小区直径小于或等于300千米、1200千米的场景，对应存在类似于表10所述的对应关系，此处不再一一赘述。可以理解的是，本申请实施例所述的方法还可以适用于以卫 星波束为单位的区域内的终端，例如，终端位于波束直径小于或等于600千米的区域中。
表10
Figure PCTCN2020115346-appb-000011
S122、第一设备向所述第二设备发送所述TA指令。
此处的TA指令具体可以是如图6所示的12比特的TA指令。
S123、第二设备根据第二设备的子载波间隔，确定TA指令指示的TA值对应的缩放值。
具体的，在小区直径小于或等于600千米，终端最小仰角为10度的场景下，网络设备和终端可以预先约定好如表10所示的对应关系。
当终端接收到TA指令后，根据终端的子载波间隔15kHz和表10所述的对应关系，可确定该TA指令指示的TA值对应的缩放值，例如，尺度因子S＝2，进一步，根据该TA指令指示的TA值和尺度因子S计算TA的时间调整值N TA，N TA＝S·T A·16·64/2 μ·T c，其中，T A表示TA指令所指示的TA值。其中，μ的含义同上述实施例所述的含义，T c的取值和上述实施例所述的取值一致，子载波间隔的定义也和上述实施例中的定义一致，此处不再赘述。该N TA可作为该终端后续向网络设备发送上行数据的定时提前的参考值。
可以理解，如表10所述的子载波间隔与尺寸因子的对应关系只是一种示意性说明，并不做具体限定，其中，尺寸因子并不局限于这几个整数，可以设定为任意的有理数。重点在于子载波间隔与尺寸因子的对应关系。例如，在小区直径或波束直径小于或等于600千米，终端最小仰角为10度的场景下，子载波间隔与尺寸因子的对应关系还可以是如下表11所示的对应关系。
表11
Figure PCTCN2020115346-appb-000012
例如，当终端接收到TA指令后，根据终端的子载波间隔15kHz和表11所述的对应关系，可确定该TA指令指示的TA值对应的缩放值，例如，尺度因子S＝1，进一步，根据该TA指令指示的TA值和尺度因子S计算TA的时间调整值N TA， N TA＝2 S·T A·16·64/2 μ·T c。
另外，当网络设备给多个小区中的终端提供服务时，若每个小区的小区直径不同，则网络设备还可以根据该终端的子载波间隔和该终端所属小区的直径，确定给该终端发送的TA指令指示的TA值对应的缩放值。此时，子载波间隔、小区直径、缩放值即尺度因子之间的对应关系可以参照如下表12所述的对应关系，网络设备根据表12确定尺度因子、发送TA指令、以及终端根据子载波间隔确定尺度因子的过程此处不再赘述。
表12
Figure PCTCN2020115346-appb-000013
其中，N/A表示不需要增大TA值的倍数即可满足NTN***的需求。表12中的D表示小区直径或波束直径，也就是说，本申请实施例所述的方法不仅适用于小区级别的区域内，还适用于波束级别的区域内。
本实施例通过子载波间隔确定TA指令指示的TA值对应的缩放值，由于该缩放值可用于调整TA指令指示的TA值的范围，因此，根据TA指令指示的TA值和该缩放值可确定出能够指示更大范围的TA值，从而能够满足NTN***的需求。
在上述实施例的基础上，网络设备还可以向终端发送指示信息，该指示信息用于指示TA值是否对应有缩放值。该指示信息包括如下至少一种：随机接入响应RAR中的预留比特；回退指示BI中的预留比特；上行授权UL-grant中的预留比特；临时小区无线网络临时识别TC-RNTI对应的至少一个比特；RAR所在时隙号的奇偶数所表示的一个比特。即该指示信息可通过如上表3所示的比特候选池中的一个比特来表示。例如，以RAR中预留的1比特即图6所示的1比特预留位为例进行示意性说明，当该比特为1时，表示TA指令指示的TA值对应有缩放值，即计算TA的时间调整值N TA时需要用到尺度因子。当该比特为0时，表示TA指令指示的TA值没有对应的缩放值，即计算TA的时间调整值N TA时不需要用到尺度因子。如此可增加尺度因子的灵活性。
可以理解的是，上述实施例中的部分或全部步骤或操作仅是示例，本申请实施例 还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照上述实施例呈现的不同的顺序来执行，并且有可能并非要执行上述实施例中的全部操作。
可以理解的是，以上各个实施例中，由终端实现的操作或者步骤，也可以由可用于终端的部件(例如芯片或者电路)实现，由网络设备实现的操作或者步骤，也可以由可用于网络设备的部件(例如芯片或者电路)实现。
图13给出了一种通信装置的结构示意图。通信装置可用于实现上述方法实施例中描述的网络设备(例如第一设备)对应部分的方法、或者终端(例如第二设备)对应部分的方法，具体参见上述方法实施例中的说明。
所述通信装置130可以包括一个或多个处理器131，所述处理器131也可以称为处理单元，可以实现一定的控制功能。所述处理器131可以是通用处理器或者专用处理器等。
在一种可选地设计中，处理器131也可以存有指令133，所述指令可以被所述处理器运行，使得所述通信装置130执行上述方法实施例中描述的对应于终端或者网络设备的方法。
在又一种可能的设计中，通信装置130可以包括电路，所述电路可以实现前述方法实施例中发送或接收或者通信的功能。
可选地，所述通信装置130中可以包括一个或多个存储器132，其上存有指令134或者中间数据，所述指令134可在所述处理器上被运行，使得所述通信装置130执行上述方法实施例中描述的方法。可选地，所述存储器中还可以存储有其他相关数据。可选地，处理器中也可以存储指令和/或数据。所述处理器和存储器可以单独设置，也可以集成在一起。
可选地，所述通信装置130还可以包括收发器135。
所述处理器131可以称为处理单元。所述收发器135可以称为收发单元、收发机、收发电路、或者收发器等，用于实现通信装置的收发功能。
若该通信装置用于实现对应于图8所示实施例中第一设备的操作时，例如，可以是收发器向第二设备发送TA指令。收发器还可以进一步完成其他相应的通信功能。而处理器用于完成相应的确定或者控制操作，可选地，还可以在存储器中存储相应的指令。各个部件的具体的处理方式可以参考前述实施例的相关描述。
若该通信装置用于实现对应于图8中的第二网络设备的操作时，例如，可以由收发器接收第一设备发送的TA指令。收发器还可以进一步完成其他相应的通信功能。而处理器用于完成相应的确定或者控制操作，可选地，还可以在存储器中存储相应的指令。各个部件的具体的处理方式可以参考前述实施例的相关描述。
本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种1C工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor,CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor,PMOS)、双极结型晶体管(Bipolar Junction Transistor，BJT)、 双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
可选地，通信装置可以是独立的设备或者可以是较大设备的一部分。例如所述设备可以是：
(1)独立的集成电路IC，或芯片，或，芯片***或子***；
(2)具有一个或多个IC的集合，可选地，该IC集合也可以包括用于存储数据和/或指令的存储部件；
(3)ASIC，例如调制解调器(MSM)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端、蜂窝电话、无线设备、手持机、移动单元，网络设备等等；
(6)其他等等。
图14为本申请实施例提供的一种通信装置的结构示意图。如图14所示，该通信装置140包括：确定模块1401和发送模块1402；其中，确定模块1401用于根据第二设备的子载波间隔，确定定时提前TA指令的扩展比特个数和扩展比特位置；发送模块1402用于向所述第二设备发送所述TA指令，所述TA指令包括扩展比特，所述TA指令用于指示所述第一设备和所述第二设备之间的往返传输时延或往返传输时延差，所述TA指令的比特位数大于12比特。
在图14中，进一步地，确定模块1401根据第二设备的子载波间隔，确定定时提前TA指令的扩展比特个数和扩展比特位置时，具体用于：根据所述第二设备的子载波间隔和所述第二设备所属小区的大小，确定所述TA指令的扩展比特个数和扩展比特位置。
可选地，所述扩展比特个数和扩展比特位置包括如下至少一种：随机接入响应RAR中预留的1比特；回退指示BI中预留的2比特；上行授权UL-grant中预留的1比特；临时小区无线网络临时识别TC-RNTI中复用的至少一个比特；RAR所在时隙号的奇偶数所表示的一个比特。
可选地，所述TC-RNTI对应的至少一个比特为所述TA指令指示的TA值的低位比特。
图14所示实施例的通信装置可用于执行上述方法实施例的技术方案，其实现原理和技术效果可以进一步参考方法实施例中的相关描述，可选地，该通信装置可以是网络设备，也可以是网络设备的部件(例如芯片或者电路)。
图15为本申请实施例提供的另一种通信装置的结构示意图。如图15所示，该通信装置150包括：接收模块1501和确定模块1502；其中，接收模块1501用于从第一设备接收TA指令，所述TA指令包括扩展比特，其中，所述TA指令用于指示所述第一设备和所述第二设备之间的往返传输时延或往返传输时延差，所述TA指令的比特位数大于12比特；确定模块1502用于根据所述第二设备的子载波间隔，确定所述TA指令的扩展比特个数和扩展比特位置。
在图15中，进一步地，该通信装置150还包括发送模块1503，发送模块1503用于确定模块1502根据所述第二设备的子载波间隔，确定所述TA指令的扩展比特个数 和扩展比特位置之后，根据所述TA指令指示的TA值，向所述第一设备发送数据。
可选地，确定模块1502根据所述第二设备的子载波间隔，确定所述TA指令的扩展比特个数和扩展比特位置时，具体用于：根据所述第二设备的子载波间隔和所述第二设备所属小区的大小，确定所述TA指令的扩展比特个数和扩展比特位置。
可选地，所述扩展比特个数和扩展比特位置包括如下至少一种：随机接入响应RAR中预留的1比特；回退指示BI中预留的2比特；上行授权UL-grant中预留的1比特；临时小区无线网络临时识别TC-RNTI中复用的至少一个比特；RAR所在时隙号的奇偶数所表示的一个比特。
可选地，所述TC-RNTI对应的至少一个比特为所述TA指令指示的TA值的低位比特。
图15所示实施例的通信装置可用于执行上述方法实施例的技术方案，其实现原理和技术效果可以进一步参考方法实施例中的相关描述，可选地，该通信装置可以是终端，也可以是终端的部件(例如芯片或者电路)。
图16为本申请实施例提供的另一种通信装置的结构示意图。如图16所示，该通信装置160包括：确定模块1601和发送模块1602；其中，确定模块1601用于根据第二设备的子载波间隔，确定TA指令指示的TA值对应的缩放值；发送模块1602用于向所述第二设备发送所述TA指令，所述缩放值用于调整所述TA指令指示的TA值的范围。
在图16中，进一步地，确定模块1601在根据第二设备的子载波间隔，确定TA指令指示的TA值对应的缩放值时，具体用于：根据所述第二设备的子载波间隔和所述第二设备所属小区的大小，确定所述TA指令指示的TA值对应的缩放值。
可选地，发送模块1602还用于：向所述第二设备发送指示信息，所述指示信息用于指示所述TA值是否对应有缩放值。
可选地，所述指示信息包括如下至少一种：随机接入响应RAR中的预留比特；回退指示BI中的预留比特；上行授权UL-grant中的预留比特；临时小区无线网络临时识别TC-RNTI对应的至少一个比特；RAR所在时隙号的奇偶数所表示的一个比特。
图16所示实施例的通信装置可用于执行上述方法实施例的技术方案，其实现原理和技术效果可以进一步参考方法实施例中的相应描述，此处不再赘述，可选地，该通信装置可以是网络设备，也可以是网络设备的部件(例如芯片或者电路)。
图17为本申请实施例提供的另一种通信装置的结构示意图。如图17所示，该通信装置170包括：接收模块1701和确定模块1702；其中，接收模块1701用于接收第一设备发送的TA指令；确定模块1702用于根据所述第二设备的子载波间隔，确定所述TA指令指示的TA值对应的缩放值，所述缩放值用于调整所述TA指令指示的TA值的范围。
在图17中，进一步地，确定模块1702在根据所述第二设备的子载波间隔，确定所述TA指令指示的TA值对应的缩放值之后，还用于：根据所述TA指令指示的TA值和所述缩放值，确定所述第二设备向所述第一设备发送数据时采用的TA值。
可选地，确定模块1702在根据所述第二设备的子载波间隔，确定所述TA指令指示的TA值对应的缩放值时，具体用于：根据所述第二设备的子载波间隔和所述第二设备所属小区的大小，确定所述TA指令指示的TA值对应的缩放值。
可选地，接收模块1701还用于：接收所述第一设备的指示信息，所述指示信息用于指示所述TA值是否对应有缩放值。
可选地，所述指示信息包括如下至少一种：随机接入响应RAR中的预留比特；回退指示BI中的预留比特；上行授权UL-grant中的预留比特；临时小区无线网络临时识别TC-RNTI对应的至少一个比特；RAR所在时隙号的奇偶数所表示的一个比特。
图17所示实施例的通信装置可用于执行上述方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述，该通信装置可以是终端，也可以是终端的部件(例如芯片或者电路)。
应理解以上图14-图17所示通信装置的各个模块的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且这些模块可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分模块以软件通过处理元件调用的形式实现，部分模块通过硬件的形式实现。例如，确定模块可以为单独设立的处理元件，也可以集成在通信装置，例如网络设备或终端的某一个芯片中实现，此外，也可以以程序的形式存储于通信装置的存储器中，由通信装置的某一个处理元件调用并执行以上各个模块的功能。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路，具有信号的处理能力。在实现过程中，上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如，以上这些模块可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)等。再如，当以上某个模块通过处理元件调度程序的形式实现时，该处理元件可以是通用处理器，例如中央处理器(Central Processing Unit，CPU)或其它可以调用程序的处理器。再如，这些模块可以集成在一起，以片上***(system-on-a-chip，SOC)的形式实现。
图18为本申请实施例提供的又一种通信装置的结构示意图。该通信装置具体可以是网络设备例如基站，如图18所示，该基站包括：天线181、射频装置182、基带装置183。天线181与射频装置182连接。在上行方向上，射频装置182通过天线181接收终端发送的信息，将终端发送的信息发送给基带装置183进行处理。在下行方向上，基带装置183对终端的信息进行处理，并发送给射频装置182，射频装置182对终端的信息进行处理后经过天线181发送给终端。
以上通信装置可以位于基带装置183，在一种实现中，以上各个模块通过处理元件调度程序的形式实现，例如基带装置183包括处理元件和存储元件，处理元件1831调用存储元件1832存储的程序，以执行以上方法实施例中的方法。此外，该基带装置 183还可以包括接口1833，用于与射频装置182交互信息，该接口例如为通用公共无线接口(common public radio interface，CPRI)。
在另一种实现中，以上这些模块可以是被配置成实施以上方法的一个或多个处理元件，这些处理元件设置于基带装置183上，这里的处理元件可以为集成电路，例如：一个或多个ASIC，或，一个或多个DSP，或，一个或者多个FPGA等。这些集成电路可以集成在一起，构成芯片。
例如，以上各个模块可以集成在一起，以片上***(system-on-a-chip，SOC)的形式实现，例如，基带装置183包括SOC芯片，用于实现以上方法。该芯片内可以集成处理元件1831和存储元件1832，由处理元件1831调用存储元件1832的存储的程序的形式实现以上方法或以上各个模块的功能；或者，该芯片内可以集成至少一个集成电路，用于实现以上方法或以上各个模块的功能；或者，可以结合以上实现方式，部分模块的功能通过处理元件调用程序的形式实现，部分模块的功能通过集成电路的形式实现。
不管采用何种方式，总之，以上通信装置包括至少一个处理元件，存储元件和通信接口，其中至少一个处理元件用于执行以上方法实施例所提供的方法。处理元件可以以第一种方式：即执行存储元件存储的程序的方式执行以上方法实施例中的部分或全部步骤；也可以以第二种方式：即通过处理元件中的硬件的集成逻辑电路结合指令的方式执行以上方法实施例中的部分或全部步骤；当然，也可以结合第一种方式和第二种方式执行以上方法实施例提供的方法。
这里的处理元件同以上描述，可以是通用处理器，例如中央处理器(Central Processing Unit，CPU)，还可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)等。存储元件可以是一个存储器，也可以是多个存储元件的统称。
图19为本申请实施例提供的又一种通信装置的结构示意图。如图19所示，通信装置190包括：处理器192和收发装置193，该收发装置193也可以是收发器。收发装置193从网络设备接收TA指令，所述TA指令包括扩展比特，其中，所述TA指令用于指示所述第一设备和所述第二设备之间的往返传输时延或往返传输时延差，所述TA指令的比特位数大于12比特，并根据子载波间隔，确定所述TA指令的扩展比特个数和扩展比特位置。进一步的，还包括存储器191，用于存储计算机程序或者指令，处理器192用于调用所述程序或者指令。
图19所示实施例的通信装置可用于执行上述方法实施例的技术方案，其实现原理和技术效果可以进一步参考方法实施例中的相关描述，此处不再赘述，该通信装置可以是终端，也可以是终端的部件(例如芯片或者电路)。
在图19中，收发装置193可以与天线连接。在下行方向上，收发装置193通过天线接收基站发送的信息，并将信息发送给处理器192进行处理。在上行方向上，处理器192对终端的数据进行处理，并通过收发装置193发送给基站。
可选地，处理器192可以用于实现如图15所示的通信装置的确定模块1502中的相应功能，收发装置可以用于实现图15所示的通信装置的接收模块1501的相应功能。或者，处理器192可以用于实现如图17所示的通信装置的确定模块1702中的相应功能，收发装置可以用于实现图17所示的通信装置的接收模块1701的相应功能。
或者，以上各个模块的部分或全部也可以通过集成电路的形式内嵌于该终端的某一个芯片上来实现。且它们可以单独实现，也可以集成在一起。即以上这些模块可以被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)等。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序，当其在计算机上运行时，使得计算机执行上述实施例所述的定时提前的指示方法。
此外，本申请实施例还提供一种计算机程序产品，该计算机程序产品包括计算机程序，当其在计算机上运行时，使得计算机执行上述实施例所述的定时提前的指示方法。
此外，本申请实施例还提供一种处理器，该处理器包括：至少一种电路，用于执行如上述实施例所述的定时提前的指示方法。
另外，本申请实施例还提供一种***，该***包括如上所述的终端和网络设备。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线)或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk)等。
基于与本申请上述实施例提供的方法的同一发明构思，本申请实施例还提供了一种通信装置，该通信装置可以是终端，也可以是终端的部件(例如芯片或者电路)，或者，该通信装置可以是网络设备，也可以是网络设备的部件(例如芯片或者电路)。该通信装置用于实现上述实施例中的方法，上述实施例的方法中的部分或全部可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，参见图20所示，该通信装置1000包括：输入接口电路1002、逻辑电路1004和输出接口电路1006。另外，该通信装置1000还包括收发器1008和天线1010，收发器1008通过天线1010进行数据的收发。
其中，逻辑电路1004，用于执行图8或图12所示的定时提前的指示方法，具体请见前面方法实施例中的描述，此处不再赘述。在具体实现时，上述通信装置1000可以是芯片或者集成电路。

Claims (16)

  1. 一种定时提前的指示方法，其特征在于，包括：
    第一设备根据第二设备的子载波间隔，确定定时提前TA指令的扩展比特个数和扩展比特位置；
    所述第一设备向所述第二设备发送所述TA指令，所述TA指令包括扩展比特，所述TA指令用于指示所述第一设备和所述第二设备之间的往返传输时延或往返传输时延差，所述TA指令的比特位数大于12比特。
  2. 根据权利要求1所述的方法，其特征在于，所述第一设备根据第二设备的子载波间隔，确定定时提前TA指令的扩展比特个数和扩展比特位置，包括：
    所述第一设备根据所述第二设备的子载波间隔和所述第二设备所属小区的大小，确定所述TA指令的扩展比特个数和扩展比特位置。
  3. 根据权利要求1或2所述的方法，其特征在于，所述扩展比特个数和扩展比特位置包括如下至少一种：
    随机接入响应RAR中预留的1比特；
    回退指示BI中预留的2比特；
    上行授权UL-grant中预留的1比特；
    临时小区无线网络临时识别TC-RNTI中复用的至少一个比特；
    RAR所在时隙号的奇偶数所表示的一个比特。
  4. 根据权利要求3所述的方法，其特征在于，所述TC-RNTI对应的至少一个比特为所述TA指令指示的TA值的低位比特。
  5. 一种定时提前的指示方法，其特征在于，包括：
    第二设备从第一设备接收TA指令，所述TA指令包括扩展比特，其中，所述TA指令用于指示所述第一设备和所述第二设备之间的往返传输时延或往返传输时延差，所述TA指令的比特位数大于12比特；
    所述第二设备根据所述第二设备的子载波间隔，确定所述TA指令的扩展比特个数和扩展比特位置。
  6. 根据权利要求5所述的方法，其特征在于，所述第二设备根据所述第二设备的子载波间隔，确定所述TA指令的扩展比特个数和扩展比特位置之后，所述方法还包括：
    所述第二设备根据所述TA指令指示的TA值，向所述第一设备发送数据。
  7. 根据权利要求5或6所述的方法，其特征在于，所述第二设备根据所述第二设备的子载波间隔，确定所述TA指令的扩展比特个数和扩展比特位置，包括：
    所述第二设备根据所述第二设备的子载波间隔和所述第二设备所属小区的大小，确定所述TA指令的扩展比特个数和扩展比特位置。
  8. 根据权利要求5-7任一项所述的方法，其特征在于，所述扩展比特个数和扩展比特位置包括如下至少一种：
    随机接入响应RAR中预留的1比特；
    回退指示BI中预留的2比特；
    上行授权UL-grant中预留的1比特；
    临时小区无线网络临时识别TC-RNTI中复用的至少一个比特；
    RAR所在时隙号的奇偶数所表示的一个比特。
  9. 根据权利要求8所述的方法，其特征在于，所述TC-RNTI对应的至少一个比特为所述TA指令指示的TA值的低位比特。
  10. 一种通信装置，其特征在于，包括用于执行权利要求1-4或5-9中任意一项方法的单元。
  11. 一种通信装置，其特征在于，包括处理器和收发器，处理器和收发器通过内部连接互相通信；所述处理器用于执行权利要求1-4或5-9中任意一项方法中的处理步骤。
  12. 一种通信装置，其特征在于，包括存储器和处理器，其中，
    所述存储器用于存储计算机程序；
    所述处理器用于执行所述存储器中存储的计算机程序，以使得所述通信装置执行如权利要求1-4或5-9中任一项所述的方法。
  13. 一种通信装置，其特征在于，包括：输入接口电路，逻辑电路，输出接口电路，其中，所述逻辑电路用于执行权利要求1-4或5-9中任一项所述的方法。
  14. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序包括用于执行权利要求1-4或5-9中任意一项方法的指令。
  15. 一种处理器，其特征在于，该处理器包括：至少一种电路，用于执行权利要求1-4或5-9中任一项所述的方法。
  16. 一种计算机程序，其特征在于，包括程序代码，当计算机运行所述计算机程序时，所述程序代码执行如权利要1-4或5-9中任一项所述的方法。
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