Search

BR-122025010283-A2 - Methods, station and access point for transmitting a physical layer protocol data unit, device and communication system, computer-readable storage medium and chip.

BR122025010283A2BR 122025010283 A2BR122025010283 A2BR 122025010283A2BR-122025010283-A2

Abstract

The embodiments of this application provide a method and apparatus for transmitting a physical layer protocol data unit to project a sequence in the short training field for a larger channel bandwidth. The sequence in the short training field projected in this application has a lower peak power to average power ratio (PAPR) and better performance. The method includes: generating a physical layer protocol data unit (PPDU) that conforms to the 802.11be standard, where the PPDU includes a short training field and a number of subcarriers of a sequence in the frequency domain of the short training field that is greater than 2048; and sending the PPDU on a destination channel where the destination channel bandwidth is greater than or equal to 160 MHz.

Inventors

  • Dandan LIANG
  • Ming Gan
  • Zhengchun ZHOU
  • Xianfu LEI
  • Yang Yang
  • XiaoHu Tang
  • Wei Lin
  • Chenchen LIU

Assignees

  • HUAWEI TECHNOLOGIES CO., LTD

Dates

Publication Date
20260317
Application Date
20210526
Priority Date
20200602

Claims (11)

  1. 1. A method for transmitting a physical layer protocol data unit, characterized in that it comprises: generating a physical layer protocol data unit (PPDU), wherein the PPDU comprises a short training field and a number of subcarriers of a frequency domain sequence of the short training field that is greater than 2048; and sending the PPDU on a destination channel, wherein the bandwidth of the destination channel is 320 MHz; wherein the frequency domain sequence of the short training field is {HES-496:16:496, 0, HES-496:16:496, 0, —HES-496:16:496, 0, —HES-496:16:496}; wherein
  2. 2. A method for transmitting a physical layer protocol data unit, characterized in that it comprises: receiving a physical layer protocol data unit (PPDU) on a destination channel, wherein the PPDU comprises a short training field, a number of subcarriers of a frequency domain sequence of the short training field that is greater than 2048, and a destination channel bandwidth of 320 MHz; and analyzing the PPDU; wherein the frequency domain sequence of the short training field is {HES-496:16:496, 0, HES-496:16:496, 0, -HES-496:16:496, 0, -HES-496:16:496}; wherein
  3. 3. A method according to claim 1 or 2, characterized in that the PPDU is any one of: a high-efficiency single-user physical layer protocol data unit (HE SU PPDU), a high-efficiency multi-user physical layer protocol data unit (HE MU PPDU), or a high-efficiency extended-range single-user physical layer protocol data unit (HE ER SU PPDU).
  4. 4. A method, according to any one of claims 1 to 3, characterized in that a time-domain waveform of the short training field comprises five repetition periods, and each period length is 0.8 μs.
  5. 5. Method, according to any one of claims 1 to 4, characterized in that a peak power-to-average power ratio (PAPR) value of the short training field is 8.2020 dB when the channel puncture pattern is [1 1 1 1 0 0 1 1 1 1 1 1 1 1 1 ], wherein a “1” indicates a 20 MHz channel bandwidth that is not punctured and a “0” indicates a 20 MHz channel that is punctured.
  6. 6. Access point for transmitting a physical layer protocol data unit characterized in that it comprises: a processing unit, configured to: generate a physical layer protocol data unit (PPDU), wherein the PPDU comprises a short training field and a number of subcarriers of a sequence in the frequency domain of the short training field that is greater than 2048; and send the PPDU on a destination channel, wherein the bandwidth of the destination channel is 320 MHz; and a communication unit, configured to send the PPDU on a destination channel, wherein the bandwidth of the destination channel is greater than 160 MHz; wherein the sequence in the frequency domain of the short training field is {HES-496:16:496, 0, HES-496:16:496, 0, —HES-496:16:496, 0, —HES-496:16:496}; wherein
  7. 7. Station for transmitting a physical layer protocol data unit characterized in that it comprises: a transceiver unit, configured to receive a physical layer protocol data unit (PPDU) on a destination channel, wherein the PPDU comprises a short training field, a number of subcarriers of a frequency domain sequence of the short training field that is greater than 2048, and a destination channel bandwidth of 320 MHz; and a communication unit, configured to analyze the PPDU; wherein the frequency domain sequence of the short training field is {HES-496:16:496, 0, HES-496:16:496, 0, -HES-496:16:496, 0, -HES-496:16:496}; wherein
  8. 8. A communication apparatus characterized in that it comprises: a memory, configured to store instructions; and a processor, configured to execute the instructions stored in the memory to enable the communication apparatus to perform the method as defined in any one of claims 1 to 5.
  9. 9. A chip characterized in that it comprises a processor and an input/output interface, wherein the processor is configured to execute instructions to control the input/output interface to send and/or receive a signal to enable a communication apparatus comprising the chip to perform the method as defined in any one of claims 1 to 5.
  10. 10. Computer-readable storage medium characterized in that it is configured to store instructions which, when executed by a processor, cause a communication apparatus comprising the processor to perform the method as defined in any one of claims 1 to 5.
  11. 11. Communication system characterized in that it comprises an access point for transmitting a physical layer protocol data unit as defined in claim 6 and a station for transmitting a physical layer protocol data unit as defined in claim 7.

Description

[001] This application claims priority to Chinese Patent Application No. 202010491814.5, filed with the National Intellectual Property Administration of China on June 2, 2020, and entitled "METHOD AND APPARATUS FOR TRANSMITTING PHYSICAL LAYER PROTOCOL DATA UNIT", which is incorporated herein by reference in its entirety. TECHNICAL FIELD [002] The modalities of this application relate to the field of communication and, in particular, to a method and apparatus for transmitting a physical layer protocol data unit. BACKGROUND [003] With the development of mobile internet and the popularization of smart terminals, data traffic is growing rapidly and users are imposing increasingly higher demands on the quality of communication services. The 802.11ax standard of the Institute of Electrical and Electronics Engineers (IEEE) can no longer meet user requirements for high data transfer rates, low jitter, low latency, and the like. Therefore, it is urgent to develop a next-generation wireless local area network (WLAN) technology, namely the IEEE 802.11be standard. [004] Unlike IEEE 802.11ax, IEEE 802.11be uses ultra-wide bandwidths, such as 240 MHz and 320 MHz, to achieve ultra-high transmission rates and support scenarios with ultra-high user density. Furthermore, in an ultra-wide bandwidth scenario, puncture and combination scenarios of a plurality of RUs are additionally considered. How to design a sequence in the short training field (STF) for a larger channel bandwidth is a problem that deserves attention. SUMMARY [005] This application provides a method and apparatus for transmitting a physical layer protocol data unit to project a sequence in the short training field for a larger channel bandwidth. [006] According to a first aspect, a method for transmitting a physical layer protocol data unit is provided. The method includes: generating a physical layer protocol data unit (PPDU) that meets the 802.11be standard, wherein the PPDU includes a short training field and a number of subcarriers of a sequence in the frequency domain of the short training field that is greater than 2048; and sending the PPDU on a destination channel where the destination channel bandwidth is greater than or equal to 160 MHz. The method in this embodiment of this application may determine a short training sequence or a sequence in the frequency domain corresponding to a larger channel bandwidth and support a receiving end to perform automatic gain control on data transmitted on a channel with a larger bandwidth. The short training sequence may be obtained based on a short training sequence of an existing channel bandwidth, and a short training sequence with better performance may be obtained through simulation calculation, for example, through parameter tuning. A short training field can be obtained based on the short training sequence. This embodiment of this request can satisfy a larger channel bandwidth during actual implementation, implement backward compatibility, verify, through exhaustive parameter simulation, that the short training sequence provided in this embodiment of this request has a lower peak power to average power ratio (PAPR) and better performance, improve the estimation effect of an automatic gain control circuit at the receiving end, and achieve a lower receive bit error rate. [007] With reference to the first aspect, in some implementations of the first aspect, the bandwidth of the destination channel is 240 MHz and the sequence in the frequency domain of the short training field is any of the following: [008] With reference to the first aspect, in some implementations of the first aspect, the destination channel bandwidth is 240 MHz and the sequence in the frequency domain of the short training field is any of the following: [009] With reference to the first aspect, in some implementations of the first aspect, the destination channel bandwidth is 240 MHz and the sequence in the frequency domain of the short training field is any of the following: [010] With reference to the first aspect, in some implementations of the first aspect, the destination channel bandwidth is 240 MHz and the sequence in the frequency domain of the short training field is any of the following: [011] With reference to the first aspect, in some implementations of the first aspect, the destination channel bandwidth is 240 MHz and the sequence in the frequency domain of the short training field is any of the following: [012] With reference to the first aspect, in some implementations of the first aspect, the destination channel bandwidth is 240 MHz and the sequence in the frequency domain of the short training field is any of the following: [013] With reference to the first aspect, in some implementations of the first aspect, the destination channel bandwidth is 240 MHz and the sequence in the frequency domain of the short training field is any of the following: [014] With reference to the first aspect, in some implementations of the first asp