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JP-7855725-B2 - Method and apparatus for transmitting and receiving trigger frame-based PPDUs in a wireless LAN system

JP7855725B2JP 7855725 B2JP7855725 B2JP 7855725B2JP-7855725-B2

Inventors

  • パク ウンソン
  • チョン チンヨン
  • チェ チンス
  • イム トングク

Assignees

  • エルジー エレクトロニクス インコーポレイティド

Dates

Publication Date
20260508
Application Date
20230509
Priority Date
20220510

Claims (15)

  1. The STA (station) receives a trigger frame containing a common information field from the AP (access point), The STA includes the step of transmitting to the AP an ultra-high reliability (UHR) TB PPDU included in one or more TB PPDUs (trigger-based Physical Layer Protocol Data Units) triggered by the trigger frame, The common information field includes an Aggregated PPDU (APPDU) related subfield indicating at least one of the following: an A-PPDU including the UHR TB PPDU, an A-PPDU not including the UHR TB PPDU, or a non-A-PPDU . A method wherein the configuration of one or more TB PPDUs is indicated based on the A-PPDU related subfield and at least one other subfield included in the common information field.
  2. A value of 0 in the A-PPDU related subfield indicates the A-PPDU including the UHR TB PPDU, The method according to claim 1, wherein one value of the A-PPDU related subfield indicates at least one of the A-PPDUs that does not include the non -A-PPDU or UHRTB PPDU.
  3. The method according to claim 1, wherein the at least one other subfield includes B54 and B55 in the common information field.
  4. The value of B54 indicates that the primary 160MHz channel is allocated to the HE (high efficiency) TB PPDU. The method according to claim 3, wherein the value of B54 is 0, indicating that the primary 160MHz channel is to be allocated to an EHT (extremely high throughput) TB PPDU or a non-legacy TB PPDU.
  5. The method according to claim 3, wherein the values of 0 and 1 of B55 are associated with the presence of the UHR variant special user information field.
  6. The method according to claim 3, wherein, based on the setting of B54 to a value of 1, the setting of B55 to a value of 1, and the setting of the A-PPDU related subfield to a value of 1, the one or more TB PPDUs include HE TB PPDUs.
  7. The method according to claim 3, wherein, based on the setting of B54 to a value of 0, the setting of B55 to a value of 0, and the setting of the A-PPDU related subfield to a value of 1, the one or more TB PPDUs include an EHT TB PPDU.
  8. The method according to claim 3, wherein, based on the setting of B54 to a value of 1, the setting of B55 to a value of 0, and the setting of the A-PPDU related subfield to a value of 1, the one or more TB PPDUs include HE TB PPDU and EHT TB PPDU.
  9. The method according to claim 3, wherein, based on the setting of B54 to a value of 0, B55 to a value of 1, and the setting of the A-PPDU related subfield to a value of 1, the one or more TB PPDUs include the UHR TB PPDU.
  10. The method according to claim 3, wherein, based on the setting of B54 to a value of 1, the setting of B55 to a value of 1, and the setting of the A-PPDU related subfield to a value of 0, the one or more TB PPDUs include the HE TB PPDU and the UHR TB PPDU.
  11. The method according to claim 3, wherein, based on the setting of B54 to 0, the setting of B55 to 0, and the setting of the A-PPDU related subfield to 0, the one or more TB PPDUs include the EHT TB PPDU and the UHR TB PPDU.
  12. The method according to claim 1, wherein the trigger frame includes at least one of a special user information field associated with information for the UHR TB PPDU or a user information field associated with information for an STA assigned to transmit the UHR TB PPDU.
  13. The method according to claim 12, wherein the channel instruction for the UHR TB PPDU is based on a combination of the values of B25 and B39 in the user information field.
  14. A device for STA (station), the device is At least one transceiver and, The system comprises at least one processor connected to the at least one transceiver, The aforementioned at least one processor is Receive a trigger frame containing common information fields from the AP (access point). The AP is configured to transmit an ultra-high reliability (UHR) TB PPDU (trigger-based physical layer protocol data unit) included in one or more TB PPDUs (trigger-based physical layer protocol data units) triggered by the trigger frame. The common information field includes an A-PPDU (aggregated PPDU) related subfield indicating at least one of the following: an A-PPDU including the UHR TB PPDU, an A-PPDU not including the UHR TB PPDU, or a non-A- PPDU. The configuration of one or more TB PPDUs is indicated based on the A-PPDU related subfield and at least one other subfield included in the common information field of the device .
  15. A device for an access point (AP), wherein the device is At least one transceiver and, The system comprises at least one processor connected to the at least one transceiver, The aforementioned at least one processor is A trigger frame containing a common information field is sent to the STA (station). The STA is configured to receive UHR (ultra high reliability) TB PPDUs included in one or more TB PPDUs (trigger-based physical layer protocol data units) triggered by the trigger frame, The common information field includes an A-PPDU (aggregated PPDU) related subfield indicating at least one of the following: an A-PPDU including the UHR TB PPDU, an A-PPDU not including the UHR TB PPDU, or a non-A- PPDU. The configuration of one or more TB PPDUs is indicated based on the A-PPDU related subfield and at least one other subfield included in the common information field of the device.

Description

This disclosure relates to a method and apparatus for transmitting or receiving a PPDU (physical layer protocol data unit) based on a trigger frame in a Wireless Local Area Network (WLAN) system. New technologies are being introduced to wireless LANs (WLANs) to improve transmission rates, increase bandwidth, enhance reliability, reduce errors, and decrease latency. Within wireless LAN technology, the IEEE (Institute of Electrical and Electronics Engineers) 802.11 series standards can be referred to as Wi-Fi. For example, recently introduced technologies in wireless LANs include improvements to the 802.11ac standard's VHT (Very High-Throughput) and improvements to the IEEE 802.11ax standard's HE (High Efficiency). To provide a more advanced wireless communication environment, improved technologies for Extremely High Throughput (EHT) are being discussed. For example, technologies for supporting increased bandwidth, efficient utilization of multiple bandwidths, increased spatial streams (MIMO - Multiple Input Multiple Output), and multiple access point (AP) coordination are being studied. In particular, various technologies to support low-latency or real-time traffic are being researched. Furthermore, new technologies to support ultra-high reliability (UHR), including improvements or extensions to EHT technology, are being discussed. The accompanying drawings, included as part of the detailed description to aid in understanding this disclosure, provide examples of the disclosure and illustrate the technical features of the disclosure together with the detailed description. This is a block diagram illustrating an example of a wireless communication device according to one embodiment of the present disclosure.This figure shows an exemplary structure of a wireless LAN system to which this disclosure can be applied.This diagram illustrates the link setup process to which this disclosure can be applied.This diagram illustrates the backoff process to which this disclosure applies.This diagram illustrates the CSMA/CA baseframe transmission operation to which this disclosure can be applied.This figure illustrates an example of a frame structure used in a wireless LAN system to which this disclosure can be applied.This figure shows examples of PPDUs as defined in the IEEE 802.11 standard to which this disclosure applies.This figure illustrates an example of a resource unit in a wireless LAN system to which this disclosure can be applied.This figure illustrates an example of a resource unit in a wireless LAN system to which this disclosure can be applied.This figure illustrates an example of a resource unit in a wireless LAN system to which this disclosure can be applied.This is a diagram illustrating an exemplary structure of the HE-SIG-B field.This diagram illustrates the MU-MIMO scheme, in which multiple users/STAs are assigned to a single RU.This figure shows examples of PPDU formats to which this disclosure can be applied.This figure shows an exemplary format of a trigger frame to which this disclosure can be applied.This figure illustrates an A-PPDU structure to which this disclosure can be applied.This is a flowchart illustrating the operation of STA based on the trigger frame related to this disclosure.This is a flowchart illustrating the operation of the AP based on the trigger frame related to this disclosure. Preferred embodiments relating to this disclosure will be described in detail below with reference to the accompanying drawings. The detailed description disclosed below, together with the accompanying drawings, is intended to illustrate exemplary embodiments of this disclosure and is not intended to represent the only possible embodiments of this disclosure. The following detailed description includes specific details to provide a complete understanding of this disclosure. However, those skilled in the art will understand that this disclosure is implementable without such specific details. In some cases, to avoid ambiguity in the concepts of this disclosure, known structures and devices may be omitted, or they may be shown in the form of block diagrams focusing on the core function of each structure and device. In this disclosure, when one component is “connected,” “joined,” or “linked” to another component, this may include not only direct connections but also indirect connections where other components exist between them. Furthermore, in this disclosure, the terms “includes” or “have” identify the presence of the referred features, stages, operations, elements, and/or components, but do not exclude the presence or addition of one or more other features, stages, operations, elements, components, and/or groups thereof. In this disclosure, terms such as "first," "second," etc., are used solely to distinguish one component from another, and are not used to limit the components. Unless otherwise specified, they do not limit the order or importance of the components. Therefore, within the scope of this disc