CN-122029777-A - Method and apparatus for transmitting or receiving based on distributed resource unit tone plan in wireless LAN system

Abstract

Methods and apparatus for transmitting or receiving based on a distributed resource unit tone plan in a wireless LAN system are disclosed. A method performed by a first STA in a Wireless Local Area Network (WLAN) system according to an embodiment of the present disclosure may include generating a first physical layer protocol data unit (PPDU) and transmitting the first PPDU to a second STA on a first bandwidth, wherein an Ultra High Reliability (UHR) -Long Training Field (LTF) sequence related to a Distributed Resource Unit (DRU) allocated to the second bandwidth is applied to the first PPDU based on the second bandwidth among the first bandwidths.

Inventors

• Pu Encheng
• QIAN ZHENYING
• Cui Zhenzhu
• LIN DONGJU

Assignees

• LG电子株式会社

Dates

Publication Date

20260512

Application Date

20240814

Priority Date

20230816

Claims (15)

1. 1. A method performed by a first station STA in a wireless local area network, WLAN, system, the method comprising the steps of: generating a first physical layer protocol data unit, PPDU, and The first PPDU is transmitted to a second STA over a first bandwidth, Wherein, based on a second bandwidth among the first bandwidths being allocated by a distributed resource unit DRU, an ultra high reliability UHR-long training field LTF sequence related to the DRU allocated to the second bandwidth is applied to the first PPDU.
2. 2. The method of claim 1, wherein, The UHR sequences associated with the DRUs allocated to the second bandwidth include 4x UHR-LTF sequences associated with the DRUs allocated to the second bandwidth.
3. 3. The method of claim 2, wherein, The 4x UHR-LTF sequence associated with the DRU allocated to the second bandwidth corresponds to a 4x UHR-LTF sequence associated with a predefined resource unit of the second bandwidth.
4. 4. The method of claim 3, wherein, The 4x UHR-LTF coefficient applied to the nth tone of the predefined resource unit of the second bandwidth is the same as the 4x UHR-LTF coefficient associated with the DRU allocated to the second bandwidth, where n is a natural number greater than or equal to 1.
5. 5. The method of claim 1, wherein, The location of pilot tones of the UHR-LTF field associated with the DRU allocated to the second bandwidth corresponds to the location of pilot tones of the UHR-LTF field associated with a predefined resource unit of the second bandwidth.
6. 6. The method of claim 5, wherein, The p-th pilot tone of the UHR-LTF field associated with the DRU allocated to the second bandwidth is the same as the p-th pilot tone of the UHR-LTF field associated with the predefined resource unit of the second bandwidth, where p is a natural number.
7. 7. The method of claim 1, wherein, The first PPDU is an uplink UL trigger-based TB PPDU, an The UL TB PPDU includes a legacy L-preamble, a general U-signal SIG field, a UHR-short training field STF field, a UHR-LTF field, and a data field.
8. 8. The method of claim 2, wherein, Based on the DRU being allocated for the first bandwidth: a 4x UHR-LTF sequence associated with the DRU allocated to the first bandwidth is applied to the first PPDU, and The 4x UHR-LTF sequence associated with the DRU allocated to the first bandwidth corresponds to a 4x UHR-LTF sequence associated with a predefined resource unit of the first bandwidth.
9. 9. The method of claim 7, wherein, Receiving a first trigger frame for triggering the UL TB PPDU from the second STA, and The first trigger frame includes information about the second bandwidth to which the DRU is allocated.
10. 10. The method of claim 1, wherein, The first STA is a non-access point AP STA, and The second STA is an AP.
11. 11. A first station, STA, apparatus in a wireless local area network, WLAN, system, the first STA comprising: At least one transceiver, and At least one processor, said at least one processor being coupled to said at least one transceiver, Wherein the at least one processor is configured to: generating a first physical layer protocol data unit, PPDU, and Transmitting the first PPDU to a second STA over a first bandwidth through the at least one transceiver, Wherein, based on a second bandwidth among the first bandwidths being allocated by a distributed resource unit DRU, an ultra high reliability UHR-long training field LTF sequence related to the DRU allocated to the second bandwidth is applied to the first PPDU.
12. 12. A method performed by a second station STA in a wireless local area network WLAN system, the method comprising the steps of: transmitting a first trigger frame to the first STA, and A first physical layer protocol data unit PPDU is received in a first bandwidth from the first STA based on the first trigger frame, Wherein, based on a second bandwidth among the first bandwidths being allocated by a distributed resource unit DRU, an ultra high reliability UHR-long training field LTF sequence related to the DRU allocated to the second bandwidth is applied to the first PPDU.
13. 13. A second station STA apparatus in a wireless local area network WLAN system, the second STA comprising: At least one transceiver, and At least one processor, said at least one processor being coupled to said at least one transceiver, Wherein the at least one processor is configured to: Transmitting a first trigger frame to the first STA via the at least one transceiver, and Receiving, by the at least one transceiver, a first PPDU from a first STA over a first bandwidth based on the first trigger frame, Wherein, based on a second bandwidth among the first bandwidths being allocated by a distributed resource unit DRU, an ultra high reliability UHR-long training field LTF sequence related to the DRU allocated to the second bandwidth is applied to the first PPDU.
14. 14. A processing apparatus configured to control a station STA in a wireless local area network WLAN system, the processing apparatus comprising: one or more processors, and One or more of the computer memories may be provided, the one or more computer memories are operatively connected to the one or more processors, and the one or more computer memories store instructions for performing the method of any of claims 1-9 based on execution by the one or more processors.
15. 15. One or more non-transitory computer-readable media, the one or more non-transitory computer-readable media store one or more commands, Wherein the one or more commands are executed by one or more processors to control an apparatus in the wireless LAN system to perform the method of any one of claims 1 to 9.

Description

Method and apparatus for transmitting or receiving based on distributed resource unit tone plan in wireless LAN system Technical Field The present disclosure relates to methods and apparatus for transmitting or receiving based on a distributed resource unit tone plan in a Wireless Local Area Network (WLAN) system. Background New technologies for improving transmission rate, increasing bandwidth, improving reliability, reducing errors, and reducing delay have been introduced for Wireless LANs (WLANs). In WLAN technology, the Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards may be referred to as Wi-Fi. For example, technologies recently introduced into WLANs include Very High Throughput (VHT) enhancements of the 802.11 ac standard and High Efficiency (HE) enhancements of the IEEE 802.11 ax standard. In order to provide a more advanced wireless communication environment, improved techniques for Extremely High Throughput (EHT) are being discussed. For example, technologies for MIMO and multi-Access Point (AP) coordination supporting increased bandwidth, efficient use of multiple frequency bands, and increased spatial streams are being studied, and in particular, various technologies are being studied to support low latency or real-time traffic. Furthermore, new technologies are being discussed to support Ultra High Reliability (UHR), including improvements or extensions of EHT technology. Disclosure of Invention Technical problem The technical problem of the present disclosure is to provide a method and apparatus for transmitting or receiving based on a distributed resource unit tone plan in a wireless LAN system. The technical problem of the present disclosure relates to distributed resource unit tone planning for reducing interference between STAs in a wireless LAN system. Technical objects to be achieved by the present disclosure are not limited to the above technical objects, and other technical objects not described herein will be apparent to those skilled in the art from the following description. Technical proposal According to one embodiment of the present disclosure, a method performed by a first Station (STA) in a Wireless Local Area Network (WLAN) system may include generating a first physical layer protocol data unit (PPDU), and transmitting the first PPDU to a second STA on a first bandwidth and being allocated to a second bandwidth among the first bandwidths based on a Distributed Resource Unit (DRU), an Ultra High Reliability (UHR) -Long Training Field (LTF) sequence related to the DRU allocated to the second bandwidth may be applied to the first PPDU. According to another embodiment of the present disclosure, a method performed by a second Station (STA) in a Wireless Local Area Network (WLAN) system may include transmitting a first trigger frame to a first STA, and receiving a first PPDU from the second STA over a first bandwidth, and based on a second bandwidth among the first bandwidths being allocated to Distributed Resource Units (DRUs), an Ultra High Reliability (UHR) -Long Training Field (LTF) sequence related to the DRUs allocated to the second bandwidth may be applied to the first PPDU. Technical effects In accordance with various embodiments of the present disclosure, methods and apparatus for transmitting or receiving based on a distributed resource unit tone plan in a wireless LAN system may be provided. According to various embodiments of the present disclosure, a distributed resource unit tone plan for reducing interference between STAs in a wireless LAN system may be provided. According to various embodiments of the present disclosure, coverage and throughput may be improved by efficient DRU-based transmission. The effects achievable by the present disclosure are not limited to the above-described effects, and other effects not described herein can be clearly understood by those skilled in the relevant art through the following description. Drawings The accompanying drawings, which are included to provide a further understanding of embodiments of the disclosure, illustrate embodiments of the disclosure and together with the description serve to describe features of the disclosure. Fig. 1 illustrates a block diagram of a configuration of a wireless communication device according to an embodiment of the present disclosure. Fig. 2 is a diagram illustrating an exemplary structure of a WLAN system to which the present disclosure may be applied. Fig. 3 is a diagram for explaining a link establishment process to which the present disclosure can be applied. Fig. 4 is a diagram for explaining back-off processing to which the present disclosure can be applied. Fig. 5 is a diagram for explaining a CSMA/CA-based frame transmission operation to which the present disclosure can be applied. Fig. 6 is a diagram for explaining an example of a frame structure used in a WLAN system to which the present disclosure can be applied. Fig. 7 is a diagram illustrating an e