EP-4742578-A1 - DISTRIBUTED RESOURCE UNIT TONE PLAN-BASED TRANSMISSION OR RECEPTION METHOD AND DEVICE IN WIRELESS LAN SYSTEM

EP4742578A1EP 4742578 A1EP4742578 A1EP 4742578A1EP-4742578-A1

Abstract

Disclosed are a distributed resource unit tone plan-based transmission or reception method and device in a Wireless LAN system. A method performed by a first STA in a Wireless local area Network (WLAN) system according to an embodiment of the present disclosure may comprise the steps of: generating a physical protocol data unit (PPDU) including at least one field, Wherein the at least one field is mapped onto a plurality of distributed resource units (DRUS); and transmitting the PPDU to at least one second STA on a bandwidth, Wherein each of the plurality of DRUs includes discontinuous tone subgroups spaced apart at predetermined intervals, each of the tone subgroups includes two or more continuous tones, and the number of tone subgroups of a first type, in Which the number of tones is different from that of other tone subgroups, among the tone subgroups of each of the plurality of DRUS may be up to 1.

Inventors

PARK, EUNSUNG
CHUN, JINYOUNG
CHOI, JINSOO
LIM, DONGGUK

Assignees

LG Electronics Inc.

Dates

Publication Date: 20260513
Application Date: 20240702

Claims (14)

A method performed by a first station (STA) in a wireless local area network (WLAN) system, the method comprising: generating a physical protocol data unit (PPDU) including at least one field, the at least one field being mapped onto a plurality of distributed resource units (DRUs); and transmitting the PPDU to at least one second STA over a bandwidth, wherein each of the plurality of DRUs includes discrete tone subgroups spaced apart at predetermined intervals, wherein each of the tone subgroups includes two or more consecutive tones, and wherein a number of first type of tone subgroups having a different number of tones from other tone subgroups among the tone subgroups of each of the plurality of DRUs is at most 1.
The method of claim 1, wherein: based on the bandwidth being 20 MHz: each of the plurality of DRUs is 26 DRUs, and a total number of tones included in the plurality of DRUs is 234.
The method of claim 2, wherein: indices of tones assigned to each of the plurality of DRUs are set in ascending order, and an index of each tone subgroup of a m th DRU (m is a natural number greater than or equal to 1) among the plurality of DRUs are set in ascending order.
The method of claim 3, wherein: based on the first type of tone subgroup not existing on the bandwidth, the predetermined interval between a k(k is a natural number greater than or equal to 1) th tone subgroup of the m th DRU and a k+1 th tone subgroup of the m th DRU is (a number of the plurality of DRUs - 1) * (a number of tones included in each of the tone subgroups).
The method of claim 3, wherein: the first type of tone subgroup of the m DRU is set as a first tone subgroup or an last tone subgroup among the tone subgroups of the m th DRU.
The method of claim 3, wherein: based on a number of tones included in tone subgroups excluding the first type of tone subgroup among the tone subgroups of the m th DRU being n (n is a natural number greater than or equal to 2), a number of tones included in the first type of tone subgroup is "26 mod n", and based on the "26 mod n" being 0, the first type of tone subgroup does not exist.
The method of claim 1, wherein: tones included in each of the tone subgroups are available tones excluding a direct current (DC) tone, guard tone, null tone, and pilot tone.
The method of claim 1, wherein: a number of the plurality of DRUs allocated on the bandwidth is equal to a number of predefined RUs corresponding to the bandwidth.
The method of claim 2, wherein: each of the 26 DRUs includes 2 pilot tones and 24 data tones.
A first station (STA) device in a wireless local area network (WLAN) system, the first STA comprising: at least one transceiver; and at least one processor connected to the at least one transceiver, wherein the at least one processor is configured to: generate a physical protocol data unit (PPDU) including at least one field, the at least one field being mapped onto a plurality of distributed resource units (DRUs); and transmit the PPDU to at least one second STA over a bandwidth, wherein each of the plurality of DRUs includes discrete tone subgroups spaced apart at predetermined intervals, wherein each of the tone subgroups includes two or more consecutive tones, and wherein a number of first type of tone subgroups having a different number of tones from other tone subgroups among the tone subgroups of each of the plurality of DRUs is at most 1.
A method performed by a second station (STA) in a wireless LAN system, the method comprising: receiving, from a first STA, a physical protocol data unit (PPDU) including at least one field, the at least one field being mapped onto a plurality of distributed resource units (DRUs); and decoding the PPDU including the at least one field, wherein each of the plurality of DRUs includes discrete tone subgroups spaced apart at predetermined intervals, wherein each of the tone subgroups includes two or more consecutive tones, and wherein a number of first type of tone subgroups having a different number of tones from other tone subgroups among the tone subgroups of each of the plurality of DRUs is at most 1.
A second station (STA) performed in a wireless LAN system, the second STA comprising: at least one transceiver; and at least one processor connected to the at least one transceiver, wherein the at least one processor is configured to: receive, from a first STA through the at least one transceiver, a physical protocol data unit (PPDU) including at least one field, the at least one field being mapped onto a plurality of distributed resource units (DRUs); and decode the PPDU including the at least one field, wherein each of the plurality of DRUs includes discrete tone subgroups spaced apart at predetermined intervals, wherein each of the tone subgroups includes two or more consecutive tones, and wherein a number of first type of tone subgroups having a different number of tones from other tone subgroups among the tone subgroups of each of the plurality of DRUs is at most 1.
A processing device configured to control a station (STA) in a wireless local area network (WLAN) system, the processing device comprising: at least one processor; and at least one computer memory operatively connected to the one or more processors and storing instructions that, when executed by the at least one processor, perform a method according to any one of claims 1 to 9.
At least one non-transitory computer-readable medium storing one or more commands, wherein the one or more commands are executed by one or more processors to control a device in a wireless LAN system to perform a method according to any one of claims 1 to 9.

Description

[TECHNICAL FIELD] The present disclosure relates to a method and device for transmitting or receiving based on a distributed resource unit tone plan in a wireless local area network (WLAN) system. [BACKGROUND ART] New technologies for improving transmission rates, increasing bandwidth, improving reliability, reducing errors, and reducing latency have been introduced for a wireless LAN (WLAN). Among WLAN technologies, an Institute of Electrical and Electronics Engineers (IEEE) 802.11 series standard may be referred to as Wi-Fi. For example, technologies recently introduced to WLAN include enhancements for Very High-Throughput (VHT) of the 802.11ac standard, and enhancements for High Efficiency (HE) of the IEEE 802.11ax standard. In order to provide a more advanced wireless communication environment, improved technologies for Extremely High Throughput (EHT) are being discussed. For example, technologies for MIMO and multiple access point (AP) coordination that support increased bandwidth, efficient utilization of multiple 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 technologies. [Disclosure] [Technical Problem] A technical problem of the present disclosure is to provide a transmission or reception method and device based on a distributed resource unit tone plan in a WLAN system. The technical problem of the present disclosure relates to a distributed resource unit tone plan for reducing interference between STAs in a wireless LAN system. The technical objects to be achieved by the present disclosure are not limited to the above-described technical objects, and other technical objects which are not described herein will be clearly understood by those skilled in the pertinent art from the following description. [Technical Solution] 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 physical protocol data unit (PPDU) including at least one field, the at least one field being mapped onto a plurality of distributed resource units (DRUs); and transmitting the PPDU to at least one second STA over a bandwidth, and each of the plurality of DRUs may include discrete tone subgroups spaced apart at predetermined intervals, and each of the tone subgroups may include two or more consecutive tones, and a number of first type of tone subgroups having a different number of tones from other tone subgroups among the tone subgroups of each of the plurality of DRUs may be at most 1. According to one embodiment of the present disclosure, a method performed by a second station (STA) in a wireless LAN system may include receiving, from a first STA, a physical protocol data unit (PPDU) including at least one field, the at least one field being mapped onto a plurality of distributed resource units (DRUs); and decoding the PPDU including the at least one field, and each of the plurality of DRUs may include discrete tone subgroups spaced apart at predetermined intervals, and each of the tone subgroups may include two or more consecutive tones, and a number of first type of tone subgroups having a different number of tones from other tone subgroups among the tone subgroups of each of the plurality of DRUs may be at most 1. [Technical Effects] According to the present disclosure, a method and device 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 can be provided to reduce interference between STAs in a wireless LAN system. According to various embodiments of the present disclosure, coverage and throughput can be improved through efficient DRU-based transmission. Effects achievable by the present disclosure are not limited to the above-described effects, and other effects which are not described herein may be clearly understood by those skilled in the pertinent art from the following description. [Description of Diagrams] Accompanying drawings included as part of detailed description for understanding the present disclosure provide embodiments of the present disclosure and describe technical features of the present disclosure with detailed description. FIG. 1 illustrates a block configuration diagram 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 describing a link setup process to which the present disclosure may be applied.FIG. 4 is a diagram for describing a backoff process to which the present disclosure may be applied.FIG. 5