METHOD FOR TRANSMITTING AND RECEIVING UPLINK ACKNOWLEDGEMENT SIGNAL IN WIRELESS LAN SYSTEM AND APPARATUS THEREFOR

A method, by which a station (STA) transmits an acknowledgement signal for downlink data in a wireless LAN system, is disclosed. To this end, the STA receives, from an access point (AP), a control information subfield including uplink scheduling information and a downlink physical protocol data unit...

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Bibliographic Details
Main Authors KIM, Jeongki, RYU, Kiseon, CHO, Hangyu
Format Patent
LanguageEnglish
French
Korean
Published 24.08.2017
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Summary:A method, by which a station (STA) transmits an acknowledgement signal for downlink data in a wireless LAN system, is disclosed. To this end, the STA receives, from an access point (AP), a control information subfield including uplink scheduling information and a downlink physical protocol data unit (PPDU) including downlink data, and transmits an uplink PPDU including an acknowledgment signal for the downlink data according to the uplink scheduling information. At this time, the control information subfield includes the length information of the uplink PPDU, the resource unit (RU) allocation information on the uplink PPDU, the uplink MCS information on the uplink PPDU, the transmission power of the AP, and the target receive signal strength indicator (RSSI) information of the AP. La présente invention concerne un procédé par lequel une station (STA) transmet un signal d'accusé de réception destiné à des données de liaison descendante dans un système de réseau local sans fil (LAN). À cet effet, la STA reçoit, en provenance d'un point d'accès (AP), un sous-champ des informations de commande comprenant des informations de programmation de la liaison montante et une unité de données de protocole de couche physique (PPDU) de liaison descendante comprenant des données de liaison descendante, et transmet une PPDU de liaison montante comprenant un signal d'accusé de réception destiné aux données de liaison descendante selon les informations de programmation de la liaison montante. À ce moment, le sous-champ des informations de commande comprend les informations de longueur de la PPDU de liaison montante, des informations d'allocation d'unité de ressource (RU) sur la PPDU de liaison montante, des informations de schéma de codage de modulation (MCS) sur la PPDU de liaison montante, la puissance de transmission de l'AP et les informations d'indicateur d'intensité de signal reçu (RSSI) de l'AP. 무선랜 시스템에서 스테이션(STA)이 하향링크 데이터에 대한 확인응답 신호를 전송하는 방법을 개시한다. 이를 위해 STA은 상향링크 스케줄링 정보를 포함하는 제어 정보 서브필드, 및 하향링크 데이터를 포함하는 하향링크 PPDU(Physical Protocol Data Unit)를 AP(Access Point)로부터 수신하고, 상기 상향링크 스케줄링 정보에 따라 상기 하향링크 데이터에 대한 확인응답 신호를 포함하는 상향링크 PPDU를 상기 AP에 전송한다. 이때, 상기 제어 정보 서브필드는, 상기 상향링크 PPDU의 길이 정보, 상기 상향링크 PPDU에 대한 RU(Resource Unit) 할당 정보, 상기 상향링크 PPDU에 대한 상향링크 MCS 정보, 상기 AP의 전송 전력, 및 상기 AP의 타겟 RSSI(Target receive signal strength indicator) 정보를 포함한다.
Bibliography:Application Number: WO2017KR00527