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US-12628215-B2 - Multi-link operation mode

US12628215B2US 12628215 B2US12628215 B2US 12628215B2US-12628215-B2

Abstract

In a wireless local area network (WLAN) system, a station (STA) may support a multi-link. The STA may generate a PDDU including operation mode information on whether transmission of a signal and reception of a signal can be performed simultaneously. The STA may transmit the PPDU.

Inventors

  • Insun JANG
  • Jeongki Kim
  • Jinsoo Choi
  • Suhwook Kim
  • Sungjin Park
  • Taewon SONG

Assignees

  • LG ELECTRONICS INC.

Dates

Publication Date
20260512
Application Date
20200622
Priority Date
20190702

Claims (6)

  1. 1 . A method in a wireless local area network (WLAN) system, the method comprising: generating, by an Access Point (AP), a frame including multi-link information, wherein the multi-link information has a value of one (1) based on Non-Simultaneous Transmit and Receive (NSTR) information related to links of the AP, wherein the multi-link information has a value of zero (0) based on Simultaneous Transmit and Receive (STR) information related to links of the AP, wherein the frame further includes a link identifier (ID) field identifying a link; and transmitting, by the AP, the frame.
  2. 2 . The method of claim 1 , wherein the NSTR information is related to links on which signal transmission and signal reception cannot be performed simultaneously.
  3. 3 . The method of claim 1 , wherein the STR information is related to links on which signal transmission and signal reception can be performed simultaneously.
  4. 4 . An Access Point (AP) in a wireless local area network (WLAN) system, comprising: a transceiver adapted to transmit and/or receive a wireless signal; and a processor coupled to the transceiver, wherein the processor is adapted to: generate a frame including multi-link information, wherein the multi-link information has a value of one (1) based on Non-Simultaneous Transmit and Receive (NSTR) information related to links of the AP, wherein the multi-link information is set to has a value of zero (0) based on Simultaneous Transmit and Receive (STR) information related to links of the AP, wherein the frame further includes a link identifier (ID) field identifying a link; and transmit the frame.
  5. 5 . The AP of claim 4 , wherein the NSTR information is related to links on which signal transmission and signal reception cannot be performed simultaneously.
  6. 6 . The AP of claim 4 , wherein the STR information is related to links on which signal transmission and signal reception can be performed simultaneously.

Description

This application is the National Stage filing under 35 U.S.C. 371 of International Application No. PCT/KR2020/008065 filed on Jun. 22, 2020, which claims priority to Korean Patent Application Nos. 10-2019-0079644 filed on Jul. 2, 2019; 10-2019-0109162 filed on Sep. 3, 2019 and 10-2019-0111763 filed on Sep. 9, 2019, the contents of which are all hereby incorporated by reference herein in their entirety. TECHNICAL FIELD The present specification relates to a method for transmitting information related to an operation mode for multi-link in a wireless local area network (WLAN) system. RELATED ART A wireless local area network (WLAN) has been improved in various ways. For example, the IEEE 802.11ax standard proposed an improved communication environment using orthogonal frequency division multiple access (OFDMA) and downlink multi-user multiple input multiple output (DL MU MIMO) techniques. The present specification proposes a technical feature that can be utilized in a new communication standard. For example, the new communication standard may be an extreme high throughput (EHT) standard which is currently being discussed. The EHT standard may use an increased bandwidth, an enhanced PHY layer protocol data unit (PPDU) structure, an enhanced sequence, a hybrid automatic repeat request (HARQ) scheme, or the like, which is newly proposed. The EHT standard may be called the IEEE 802.11be standard. SUMMARY A method performed by a station (STA) in a wireless local area network (WLAN) system according to various embodiments may include technical features related to a method for setting an operation mode using multi-link. A station (STA) may support multi-link. The STA may generate a PPDU including operation mode information related to whether signal transmission and signal reception can be simultaneously performed. The STA may transmit the PPDU. According to an example of the present specification, the STA may operate in a simultaneous transmit and receive (STR) mode or a non-STR mode. The STA may provide supportable mode capability information to the AP, and the AP may set an operation mode of the STA. The operation mode of the STA may be dynamically changed. The STA may support multi-links, and in some cases, there may be a link that must operate as an STR and a link that must operate as a non-STR. Therefore, according to an example of the present specification, there is the effect that an optimal operation mode can be set in each case. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an example of a transmitting apparatus and/or receiving apparatus of the present specification. FIG. 2 is a conceptual view illustrating the structure of a wireless local area network (WLAN). FIG. 3 illustrates a general link setup process. FIG. 4 illustrates an example of a PPDU used in an IEEE standard. FIG. 5 illustrates a layout of resource units (RUs) used in a band of 20 MHz. FIG. 6 illustrates a layout of RUs used in a band of 40 MHz. FIG. 7 illustrates a layout of RUs used in a band of 80 MHz. FIG. 8 illustrates a structure of an HE-SIG-B field. FIG. 9 illustrates an example in which a plurality of user STAs are allocated to the same RU through a MU-MIMO scheme. FIG. 10 illustrates an operation based on UL-MU. FIG. 11 illustrates an example of a trigger frame. FIG. 12 illustrates an example of a common information field of a trigger frame. FIG. 13 illustrates an example of a subfield included in a per user information field. FIG. 14 describes a technical feature of the UORA scheme. FIG. 15 illustrates an example of a channel used/supported/defined within a 2.4 GHz band. FIG. 16 illustrates an example of a channel used/supported/defined within a 5 GHz band. FIG. 17 illustrates an example of a channel used/supported/defined within a 6 GHz band. FIG. 18 illustrates an example of a PPDU used in the present specification. FIG. 19 illustrates an example of a modified transmitting device and/or receiving device of the present specification. FIG. 20 is a diagram illustrating a multi-link operation mode. FIG. 21 is a diagram illustrating an embodiment of a method of dynamically switching a multi-link operation mode. FIG. 22 is a diagram illustrating an embodiment of a method for switching a multi-link operation mode in option 1 in which the default behavior is determined. FIG. 23 is a diagram illustrating an embodiment of a method of switching a multi-link operation mode in option 2 in which the basic operation is not determined. FIG. 24 is a diagram illustrating an embodiment of a method for determining a multi-link operation mode through negotiation between an STA and an AP. FIG. 25 is a diagram illustrating an embodiment of a method for determining a multi-link operation mode through negotiation between an STA and an AP. FIG. 26 is a diagram illustrating an embodiment of a method for determining a multi-link operation mode through negotiation between an STA and an AP. FIG. 27 is a diagram illustrating an embodiment of a method for swi