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US-20260129625-A1 - COMMUNICATION METHOD, APPARATUS, AND SYSTEM

US20260129625A1US 20260129625 A1US20260129625 A1US 20260129625A1US-20260129625-A1

Abstract

A communication method, apparatus, and system related to the field of wireless communication, and to a scenario with a high frequency and a large bandwidth in a wireless communication system, to avoid a spectrum resource waste caused due to transmission waiting, and improve communication efficiency. The method may include: sending or receiving first transmission on at least one first symbol. A first time unit includes a plurality of first symbols, a quantity of the first symbols included in the first time unit is N, N is equal to a product of at least three prime numbers, duration of the first time unit is 1 divided by 2 u milliseconds, N is a positive integer, u is a positive integer, and u is less than or equal to 8.

Inventors

  • Zhiheng Guo
  • Xinghua Song

Assignees

  • HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date
20260507
Application Date
20251231
Priority Date
20230707

Claims (20)

  1. 1 . A method comprising: sending or receiving a first transmission on at least one first symbol, wherein the at least one first symbol is located in a first time unit, the first time unit consists of a plurality of first symbols, a quantity of the first symbols comprised in the first time unit is N, N is equal to a product of at least three prime numbers, duration of the first time unit is 1 divided by 2 u milliseconds, u is a positive integer, and u is less than or equal to 8.
  2. 2 . The method according to claim 1 , wherein cyclic prefix lengths of the plurality of first symbols each are a product of a first length and a second time unit or a product of a second length and the second time unit, wherein each of the first length and the second length is an integer multiple of one of 16, 32, 64, 128, or 256, the first length is not equal to the second length, the second time unit is m/(first subcarrier spacing*first value) seconds, the first subcarrier spacing is one of 480 kHz, 960 kHz, 1920 kHz, 3840 kHz, or 7680 kHz, the first value is one of 2048, 4096, 8192, 16384, or 32768, and m is a positive integer.
  3. 3 . The method according to claim 2 , wherein a quantity of second symbols in the first time unit is N1, a quantity of third symbols in the first time unit is N2, the second symbol is a symbol that is of the plurality of first symbols and whose cyclic prefix length is the product of the first length and the second time unit, the third symbol is a symbol that is of the plurality of first symbols and whose cyclic prefix length is the product of the second length and the second time unit, and N1 and N2 are integers greater than or equal to 0.
  4. 4 . The method according to claim 3 , wherein a first N1 consecutive symbols in the first time unit are the second symbols, and a last N2 consecutive symbols in the first time unit are the third symbols.
  5. 5 . The method according to claim 3 , wherein a first N3 consecutive symbols in the first time unit are the second symbols, a last N4 consecutive symbols in the first time unit are the second symbols, and the N2 third symbols are consecutive in the first time unit, wherein N 3+ N 4= N 1.
  6. 6 . The method according to claim 3 , wherein the first time unit consists of consecutive third time units, a 1 st symbol in the third time unit is the second symbol, and remaining symbols in the third time unit are floor(N1/N2) third symbols, wherein floor represents rounding down, and N1 is greater than N2.
  7. 7 . The method according to claim 2 , wherein the product of the first length and the second time unit is greater than 50 nanoseconds, and the product of the second length and the second time unit is greater than 50 nanoseconds.
  8. 8 . The method according to claim 2 , wherein the first length is one of 208, 256, 272, 288, 320, 352, 368, 384, 448, 512, 576, 608, 624, 640, 704, 720, 768, 800, 816, 832, 864, 896, 912, 1024, 1088, 1104, 1120, 1152, 1216, or 1232, N1 is one of 142, 163, 140, 174, 138, 129, 192, 150, 173, 124, 160, 178, 168, 183, 141, 120, 159, 180, 190, 195, 170, 185, 186, 144, 189, 171, 128, 188, 198, 203, 136, 172, 199, 164, 112, 204, 210, 213, 156, 132,205, 130, 175, 208, 216, 220, 222, 223, 165, or 201, the second length is one of 224, 240, 272, 288, 304, 320, 352, 384, 400, 416, 432, 448, 464, 480, 512, 544, 576, 592, 608, 640, 656, 672, 688, 704, 736, 752, 768, 784, 800, 832, 848, 864, 880, 896, 928, 944, 960, 976, 1024, 1040, 1056, 1088, 1120, 1136, 1152, 1184, 1216, 1248, 1264, 1280, 1296, 1312, 1344, or 1360, and N2 is one of 168, 176, 136, 160, 102, 51, 120, 92, 144, 116, 156, 114, 138, 132, 192, 140, 180, 200, 128, or 108.
  9. 9 . The method according to claim 2 , wherein N1 is 80, N2 is 120, the first length is 800, and the second length is 832; or N1 is 80, N2 is 120, the first length is 512, and the second length is 1024.
  10. 10 . A communication method, comprising: sending or receiving first transmission on at least one first symbol, wherein the at least one first symbol is located in a first time unit, the first time unit consists of a plurality of first symbols, a quantity of the first symbols comprised in the first time unit is N, and N is one of 184, 189, 192, 196, 198, 200, 204, 208, 210, 216, 220, 224, 225, or 228.
  11. 11 . The method according to claim 10 , wherein duration of the first time unit is 1 divided by 2 u milliseconds, u is a positive integer, and u is less than or equal to 8.
  12. 12 . The method according to claim 10 , wherein cyclic prefix lengths of the plurality of first symbols each are a product of a first length and a second time unit or a product of a second length and the second time unit, wherein each of the first length and the second length is an integer multiple of one of 16, 32, 64, 128, or 256, the first length is not equal to the second length, the second time unit is m/(first subcarrier spacing*first value), the first subcarrier spacing is one of 480 kHz, 960 kHz, 1920 kHz, 3840 kHz, or 7680 kHz, the first value is one of 2048, 4096, 8192, 16384, or 32768, and m is a positive integer.
  13. 13 . The method according to claim 12 , wherein a quantity of second symbols in the first time unit is N1, a quantity of third symbols in the first time unit is N2, the second symbol is a symbol that is of the plurality of first symbols and whose cyclic prefix length is the product of the first length and the second time unit, the third symbol is a symbol that is of the plurality of first symbols and whose cyclic prefix length is the product of the second length and the second time unit, and N1 and N2 are integers greater than or equal to 0.
  14. 14 . The method according to claim 13 , wherein a first N1 consecutive symbols in the first time unit are the second symbols, and a last N2 consecutive symbols in the first time unit are the third symbols.
  15. 15 . The method according to claim 13 , wherein a first N3 consecutive symbols in the first time unit are the second symbols, a last N4 consecutive symbols in the first time unit are the second symbols, and the N2 third symbols are consecutive in the first time unit, wherein N 3+ N 4= N 1.
  16. 16 . The method according to claim 13 , wherein the first time unit consists of consecutive third time units, a 1 st symbol in the third time unit is the second symbol, and remaining symbols in the third time unit are floor(N1/N2) third symbols, wherein floor represents rounding down, and N1 is greater than N2.
  17. 17 . The method according to claim 12 , wherein the product of the first length and the second time unit is greater than 50 nanoseconds, and the product of the second length and the second time unit is greater than 50 nanoseconds.
  18. 18 . The method according to claim 12 , wherein the first length is one of 208, 256, 272, 288, 320, 352, 368, 384, 448, 512, 576, 608, 624, 640, 704, 720, 768, 800, 816, 832, 864, 896, 912, 1024, 1088, 1104, 1120, 1152, 1216, or 1232, N1 is one of 142, 163, 140, 174, 138, 129, 192, 150, 173, 124, 160, 178, 168, 183, 141, 120, 159, 180, 190, 195, 170, 185, 186, 144, 189, 171, 128, 188, 198, 203, 136, 172, 199, 164, 112, 204, 210, 213, 156, 132, 205, 130, 175, 208, 216, 220, 222, 223, 165, or 201, the second length is one of 224, 240, 272, 288, 304, 320, 352, 384, 400, 416, 432, 448, 464, 480, 512, 544, 576, 592, 608, 640, 656, 672, 688, 704, 736, 752, 768, 784, 800, 832, 848, 864, 880, 896, 928, 944, 960, 976, 1024, 1040, 1056, 1088, 1120, 1136, 1152, 1184, 1216, 1248, 1264, 1280, 1296, 1312, 1344, or 1360, and N2 is one of 168, 176, 136, 160, 102, 51, 120, 92, 144, 116, 156, 114, 138, 132, 192, 140, 180, 200, 128, or 108.
  19. 19 . The method according to claim 12 , wherein N1 is 80, N2 is 120, the first length is 800, and the second length is 832; or N1 is 80, N2 is 120, the first length is 512, and the second length is 1024.
  20. 20 . An apparatus comprising: a processor; and a memory configured to store non-transitory computer readable instructions that, when executed by the processor, cause the apparatus to: send or receive first transmission on at least one first symbol, wherein the at least one first symbol is located in a first time unit, the first time unit consists of a plurality of first symbols, a quantity of the first symbols comprised in the first time unit is N, N is equal to a product of at least three prime numbers, duration of the first time unit is 1 divided by 2 u milliseconds, u is a positive integer, and u is less than or equal to 8.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2024/103409, filed on Jul. 3, 2024, which claims priority to Chinese Patent Application No. 202310837813.5, filed on Jul. 7, 2023. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties. TECHNICAL FIELD Embodiments relate to the communication field, and to a communication method, apparatus, and system. BACKGROUND As cellular mobile communication is deployed at a high frequency or even at sub-100 GHz, a spectrum bandwidth is greatly improved, and the bandwidth may reach over 1 GHz or even reach 10 GHz. Many aspects need to be considered for designing an air interface at such a high frequency and large bandwidth. A design of a 5th generation (5G) mobile communication system may be reused, and a larger subcarrier spacing is used to resist higher phase noise. In addition, using a larger subcarrier spacing enables coverage over a larger bandwidth using a limited quantity of subcarriers. For example, currently, 5G limits a quantity of subcarriers of a single carrier to 3300, and a bandwidth of about 6 GHz can be covered by using a subcarrier spacing of 1.92 MHz. How to perform symbol design in time domain to perform transmission better at a larger bandwidth and a larger subcarrier spacing is a problem that needs to be resolved. SUMMARY The embodiments provide a communication method, apparatus, and system to avoid, when a terminal device performs transmission in a large-bandwidth scenario, a spectrum resource waste caused due to transmission waiting, and improve communication efficiency. According to a first aspect, a communication method is provided. The method may be performed by a terminal device, or may be performed by a component (for example, a chip or a circuit) of the terminal device, or may be performed by a network device, or may be performed by a component (for example, a chip or a circuit) of the network device. This is not limited. For ease of description, the following uses an example in which the method is performed by the terminal device for description. The method may include: sending or receiving first transmission on at least one first symbol. The at least one first symbol is located in a first time unit, the first time unit includes a plurality of first symbols, a quantity of the first symbols included in the first time unit is N, N is equal to a product of at least three prime numbers, duration of the first time unit is 1 divided by 2u milliseconds, N is a positive integer, u is a positive integer, and u is less than or equal to 8. In the foregoing embodiment, when the terminal device performs transmission, a quantity of prime numbers of a quantity of symbols in one time unit is as large as possible, to make scheduling easier. For example, if the terminal device is scheduled in the time unit based on a length, and if there are a large quantity of prime numbers of the quantity of symbols in the time unit, there is a high probability that the length for scheduling is exactly divisible by the quantity of symbols in the time unit. In this case, a scheduling result is that there are an integer quantity of scheduling opportunities. In this way, it can be ensured that spectrum resources can be better used in a large-bandwidth scenario, to avoid a spectrum resource waste caused due to transmission being limited by a time unit boundary, and improve communication efficiency. In a possible embodiment, cyclic prefix lengths of the plurality of first symbols each are a product of a first length and a second time unit or a product of a second length and the second time unit, where each of the first length and the second length is an integer multiple of one of 16, 32, 64, 128, or 256, the first length is not equal to the second length, the second time unit is m/(first subcarrier spacing*first value), the first subcarrier spacing is one of 480 kHz, 960 kHz, 1920 kHz, 3840 kHz, or 7680 kHz, the first value is one of 2048, 4096, 8192, 16384, or 32768, and m is 1 or a positive integer. In a possible embodiment, a quantity of second symbols in the first time unit is N1, a quantity of third symbols in the first time unit is N2, the second symbol is a symbol that is of the plurality of first symbols and whose cyclic prefix length is the product of the first length and the second time unit, the third symbol is a symbol that is of the plurality of first symbols and whose cyclic prefix length is the product of the second length and the second time unit, and N1 and N2 are integers greater than or equal to 0. Symbols with two different types of cyclic prefix lengths are configured in the first time unit, so that transmission can adapt to more scenarios. Different cyclic prefix lengths may be used for performing functions of data transmission and sensing at different distances. In a possible embodiment, a quantity of second symbols in the first time unit is