METHOD FOR POWER MANAGEMENT IN WIRELESS LAN SYSTEM AND WIRELESS TERMINAL USING SAME

• Main Authors: KIM, Jeongki, RYU, Kiseon, PARK, Hyunhee, CHO, Hangyu, KIM, Suhwook
• Format: Patent
• Language: English; French; Korean
• Published: 26.04.2018
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION ANDCOMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION ANDCOMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWNENERGY USE; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION; WIRELESS COMMUNICATIONS NETWORKS

A method for power management performed by a first wireless terminal in a wireless LAN system, according to the present embodiment, comprises the steps of: receiving, from a second wireless terminal, a wake-up packet instructing a main radio module to enter an active state, wherein the wake-up packet comprises a payload modulated according to an OOK scheme for a WUR module and the payload is received on the basis of a first wireless channel, which is a receiving channel for the WUR module; transmitting, to the second wireless terminal, a wake-up notification packet informing that the main radio module enters the active state; receiving, from the second wireless terminal, a first acknowledgment packet, which is a response to the wake-up notification packet, on the basis of the main radio module; and receiving, from the second wireless terminal, a channel switch announcement packet to change the receiving channel to a second wireless channel, after receiving the first acknowledgment packet, wherein the channel switch announcement packet is received on the basis of the main radio module. L'invention porte, selon un mode réalisation, sur un procédé de gestion de puissance exécuté par un premier terminal sans fil dans un système de réseau LAN sans fil, ledit procédé comprenant les étapes consistant : à recevoir, d'un second terminal sans fil, un paquet de réveil donnant comme instruction à un module radio principal d'entrer dans un état actif, le paquet de réveil comprenant une charge utile modulée selon un schéma OOK pour un module WUR et la charge utile étant reçue sur la base d'un premier canal sans fil, qui est un canal de réception pour le module WUR ; à transmettre, au second terminal sans fil, un paquet de notification de réveil informant que le module radio principal entre dans l'état actif ; à recevoir, du second terminal sans fil, un premier paquet d'accusé de réception, qui est une réponse au paquet de notification de réveil, sur la base du module radio principal ; à recevoir, du second terminal sans fil, un paquet d'annonce de commutation de canal pour faire passer le canal de réception à un second canal sans fil, après réception du premier paquet d'accusé de réception, le paquet d'annonce de commutation de canal étant reçu sur la base du module radio principal. 본 실시 예에 따른 무선랜 시스템에서 제1 무선 단말에 의해 수행되는 전력 관리를 위한 방법은, 메인 라디오 모듈이 활성화 상태로 진입하도록 지시하는 웨이크업 패킷을 제2 무선 단말로부터 수신하되, 웨이크업 패킷은 WUR 모듈을 위해 OOK 기법에 따라 변조된 페이로드를 포함하고, 페이로드는 WUR 모듈을 위한 수신 채널인 제1 무선 채널을 기반으로 수신되는, 단계; 메인 라디오 모듈이 활성화 상태에 진입함을 알리는 웨이크업 알림 패킷을 제2 무선 단말로 송신하는 단계; 웨이크업 알림 패킷에 대한 응답인 제1 응신 패킷을 제2 무선 단말로부터 메인 라디오 모듈을 기반으로 수신하는 단계; 및 제1 응신 패킷의 수신 이후, 수신 채널을 제2 무선 채널로 변경하기 위한 채널 스위치 발표 패킷을 제2 무선 단말로부터 수신하되, 채널 스위치 발표 패킷은 메인 라디오 모듈을 기반으로 수신되는, 단계를 포함한다.