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CN-122001540-A - Communication method, device, program product and storage medium

CN122001540ACN 122001540 ACN122001540 ACN 122001540ACN-122001540-A

Abstract

The embodiment of the application provides a communication method, a device, a program product and a storage medium. The method comprises the steps of determining a time division duplex frame structure and transmitting data and/or signals based on the time division duplex frame structure. The time division duplex frame structure comprises a transmission period, wherein the transmission period comprises a downlink transmission time period, a guard interval time period and an uplink transmission time period, the guard interval time period is smaller than or equal to the sum of round trip delay and transmission direction conversion time, and the round trip delay is the round trip delay between the terminal equipment and an uplink time synchronization reference point, so that resource expenditure can be reduced.

Inventors

  • CHI LIANGANG
  • ZHANG JIAN

Assignees

  • 荣耀终端股份有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (20)

  1. 1. A communication method, wherein the method is applied to a terminal device, the method comprising: Determining a time division duplex frame structure, wherein the time division duplex frame structure comprises a transmission period, the transmission period comprises a downlink transmission time period, a guard interval time period and an uplink transmission time period, the guard interval time period is smaller than or equal to the sum of round trip time delay and transmission direction conversion time, and the round trip time delay is the round trip time delay between the terminal equipment and an uplink time synchronization reference point; and transmitting data and/or signals based on the time division duplex frame structure.
  2. 2. The method of claim 1, wherein if a downlink frame of the terminal device starts at time T, an uplink frame corresponding to the downlink frame starts at time T-T TA , wherein T TA represents an uplink timing advance, and wherein T TA is related to the round trip delay.
  3. 3. The method according to any of claims 1 to 2, wherein said transmitting data and/or signals based on said time division duplex frame structure comprises: And transmitting data and/or signals based on the time division duplex frame structure, a first conversion time and a second conversion time, wherein the first conversion time comprises time required by the terminal equipment to convert from downlink transmission to uplink transmission, and the second conversion time comprises time required by the terminal equipment to convert from uplink transmission to downlink transmission.
  4. 4. A method according to claim 3, wherein said transmitting data and/or signals based on said time division duplex frame structure, a first transition time and a second transition time comprises: determining an uplink and downlink transmission conflict time period based on the time division duplex frame structure, the first conversion time, the second conversion time, the uplink transmission time and the downlink reception time; and transmitting data and/or signals in the uplink and downlink transmission conflict time period based on the transmission priority.
  5. 5. The method according to any one of claims 1 to 4, further comprising: receiving a first signaling, wherein the first signaling is used for indicating the transmission priority when the terminal equipment generates uplink and downlink transmission conflict; or acquiring first information according to protocol convention, wherein the first information comprises transmission priority when uplink and downlink transmission conflict occurs to the terminal equipment; Or determining the transmission priority of the terminal equipment when uplink and downlink transmission conflict occurs according to the self condition of the terminal equipment; the data and/or signal transmission based on the time division duplex frame structure comprises: And transmitting data and/or signals based on the time division duplex frame structure and the transmission priority.
  6. 6. The method according to any one of claims 4 to 5, wherein the transmission priority comprises a higher priority for uplink transmission than for downlink transmission; Or, the transmission priority includes that the priority of the downlink transmission is higher than the priority of the uplink transmission.
  7. 7. The method according to any of claims 4 to 5, wherein the transmission priority comprises at least one of: the priority of the first channel is higher than the priority of the second channel; the priority of the third channel is higher than the priority of the first signal; the priority of the second signal is higher than the priority of the fourth channel; the priority of the third signal is higher than the priority of the fourth signal.
  8. 8. The method according to any one of claims 5 to 7, wherein the first signaling is specifically configured to indicate a transmission priority when the terminal device makes an uplink and downlink transmission collision in a first time window, or the first information specifically includes a transmission priority when the terminal device makes an uplink and downlink transmission collision in the first time window; the transmitting data and/or signals based on the time division duplex frame structure and the transmission priority comprises: And transmitting data and/or signals in the first time window based on the time division duplex frame structure and the transmission priority.
  9. 9. The method according to any one of claims 1 to 8, further comprising: receiving a second signaling, wherein the second signaling is used for indicating the behavior mode of the terminal equipment; Or acquiring second information according to protocol agreement, wherein the second information comprises the behavior mode of the terminal equipment; Or determining the behavior mode of the terminal equipment according to the self condition of the terminal equipment; the data and/or signal transmission based on the time division duplex frame structure comprises: And transmitting data and/or signals based on the time division duplex frame structure and the behavior mode.
  10. 10. The method according to claim 9, wherein the behavior is any of the following: The terminal equipment allows downlink transmission and allows uplink transmission; the terminal equipment does not perform downlink transmission and allows uplink transmission; the terminal equipment allows downlink transmission and does not perform uplink transmission; The terminal equipment does not perform downlink transmission and does not perform uplink transmission.
  11. 11. The method according to any of the claims 9 to 10, characterized in that the second signaling is specifically used for indicating the behavior of the terminal device in a second time window, or that the second information specifically comprises the behavior of the terminal device in a second time window; And transmitting data and/or signals in the second time window or in a silent state in the second time window based on the time division duplex frame structure and the behavior mode.
  12. 12. The method according to any one of claims 1 to 11, further comprising: receiving third signaling, wherein the third signaling is used for indicating the position information of a time window corresponding to the terminal equipment, and the time window comprises a first time window and/or a second time window; or acquiring third information according to protocol convention, wherein the third information comprises the position information of a time window corresponding to the terminal equipment; The third signaling or the third information comprises starting position information and duration information when the time window is an aperiodic time window, or the starting position information of the time window is determined by the arrival time of the third signaling when the time window is an aperiodic time window, wherein the third signaling comprises the duration information; In the case that the time window is a periodic time window, the third signaling or the third information includes a period length of the time window, a period offset value of the time window, and a duration of the time window in a period.
  13. 13. A method of communication, the method being applied to a network device, the method comprising: Determining a time division duplex frame structure, wherein the time division duplex frame structure comprises a transmission period, the transmission period comprises a downlink transmission time period, a guard interval time period and an uplink transmission time period, the guard interval time period is smaller than or equal to the sum of round trip time delay and transmission direction conversion time, and the round trip time delay is the round trip time delay between terminal equipment and an uplink time synchronization reference point; and transmitting data and/or signals based on the time division duplex frame structure.
  14. 14. The method of claim 13, wherein the method further comprises: And sending a first signaling, wherein the first signaling is used for indicating the transmission priority when the uplink and downlink transmission conflict occurs to the terminal equipment, or the first signaling is used for indicating the transmission priority when the uplink and downlink transmission conflict occurs to the terminal equipment in a first time window.
  15. 15. The method of claim 14, wherein the transmission priority comprises a higher priority for uplink transmissions than for downlink transmissions; Or, the transmission priority includes that the priority of the downlink transmission is higher than the priority of the uplink transmission.
  16. 16. The method of claim 14, wherein the transmission priority comprises at least one of: the priority of the first channel is higher than the priority of the second channel; the priority of the third channel is higher than the priority of the first signal; the priority of the second signal is higher than the priority of the fourth channel; the priority of the third signal is higher than the priority of the fourth signal.
  17. 17. The method according to any one of claims 13 to 16, further comprising: And sending a second signaling, wherein the second signaling is used for indicating the behavior mode of the terminal equipment or the second signaling is used for indicating the behavior mode of the terminal equipment in a second time window.
  18. 18. The method of claim 17, wherein the behavior is any one of: The terminal equipment allows downlink transmission and allows uplink transmission; the terminal equipment does not perform downlink transmission and allows uplink transmission; the terminal equipment allows downlink transmission and does not perform uplink transmission; The terminal equipment does not perform downlink transmission and does not perform uplink transmission.
  19. 19. The method according to any one of claims 13 to 18, further comprising: Transmitting a third signaling, wherein the third signaling is used for indicating the position information of a time window corresponding to the terminal equipment, and the time window comprises a first time window and/or a second time window; the third signaling comprises starting position information and duration information, or the starting position information of the time window is determined by the arrival time of the third signaling when the time window is an aperiodic time window, wherein the third signaling comprises the duration information; in the case that the time window is a periodic time window, the third signaling includes a period length of the time window, a period offset value of the time window, and a duration of the time window in a period.
  20. 20. A communication device comprising at least one processor for invoking computer instructions in memory to cause the communication device to perform the communication method of any of claims 1-12 or to perform the communication method of any of claims 13-19.

Description

Communication method, device, program product and storage medium Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method, apparatus, program product, and storage medium. Background Non-terrestrial networks (Non-TERRESTRIAL NETWORK, NTN) are considered an important aspect of future wireless data transmission technology development because conventional terrestrial networks do not provide seamless coverage, particularly in the sea, desert, air, etc., where the ground station cannot be deployed. The NTN fuses the satellite network with the ground network to realize communication, and communication equipment on the ground can utilize the satellite as a relay to communicate, so that the NTN has the advantages of wide coverage, difficult influence of land disasters and the like. Currently, it is expected to introduce time division duplexing (Time Division Duplex, TDD) into NTN systems. The Round trip delay (Round TRIP DELAY, RTD) in the NTN system is relatively large, and if the setting of the uplink and downlink Guard (GP) of TDD transmission in the conventional terrestrial network is referred to, the GP in the NTN will be large, thereby causing a relatively large waste of system resources. Disclosure of Invention The embodiment of the application provides a communication method, a device, a program product and a storage medium, and aims to reasonably set GP in NTN and reduce resource expenditure. In order to achieve the above object, the present application provides the following technical solutions: In a first aspect, the present embodiment provides a communication method, which may be executed by a terminal device, where the "terminal device" in the present embodiment may refer to the terminal device itself, a component (for example, a processor, a chip, or a chip system) in the terminal device, or a logic module or software capable of implementing all or part of the functions of the terminal device, where no special description is made. The method includes determining a TDD frame structure and transmitting data and/or signals based on the TDD frame structure. The TDD frame structure includes a transmission period, where the transmission period includes a downlink transmission period, a GP period, and an uplink transmission period, and the GP period is less than or equal to a sum of an RTD and a transmission direction conversion time, where the RTD is a round trip delay between a terminal device and an uplink time synchronization reference point. In the method provided by the embodiment of the application, considering that the RTD between the terminal equipment and the network equipment in the NTN is from tens of milliseconds to hundreds of milliseconds, the GP is not set to be more than or equal to the RTD in the traditional ground network, but the GP time period in the TDD frame structure is set to be less than or equal to the sum of the RTD and the transmission direction conversion time, so that the GP time period is not overlong, the GP in the NTN can be reasonably set, and the data and/or signal transmission can be carried out based on the TDD frame structure, thereby reducing the resource expenditure. With reference to the first aspect, in one possible implementation manner of the first aspect, if a downlink frame of the terminal device starts from time T, an uplink frame corresponding to the downlink frame starts from time T-T TA, T TA represents an uplink timing advance (TIMING ADVANCE, TA), and T TA is related to the RTD. The RTD corresponding to the terminal equipment reasonably sets the advanced sending time of the uplink frame of the terminal equipment, so that the uplink frame and the downlink frame at the uplink time synchronization reference point can be aligned relative to a specific offset value, the whole TDD frame structure is more reasonable and perfect, and data and/or signal transmission based on the TDD frame structure is facilitated. With reference to the first aspect, in a possible implementation manner of the first aspect, the data and/or signal transmission based on the TDD frame structure includes performing data and/or signal transmission based on the TDD frame structure, the first transition time, and the second transition time. The first conversion time comprises time required by the terminal equipment to convert from downlink transmission to uplink transmission, and the second conversion time comprises time required by the terminal equipment to convert from uplink transmission to downlink transmission. The time required by the mutual conversion of the uplink and downlink transmission of the terminal equipment is referred to, namely, the performance of hardware is referred to, and data and/or signal transmission can be better carried out. With reference to the first aspect, in a possible implementation manner of the first aspect, the data and/or signal transmission based on the TDD frame structure,