Patent AU-2011304260-B2 (AU)
Title: Method for power saving in wireless local area network and apparatus for the same
Inventor: KANG BYEONG WOO
IPC: H04L12/28
Filed: 2011-08-02
Granted: 2014-02-13
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date H(10) International Publication Number 12 April 2012 (12.04.2012) PCT W O 2012/046951 Al (51) International Patent Classification: (74) Agent: YANG, Moon Ock; Essen Patent & Law Firm, H04W52/02 (2009.01) H04W80/00 (2009.01) 2F. Samheung Yeoksam Bldg., 735-10 Yeoksam-dong, H04B 7/04 (2006.01) H04W88/02 (2009.01) Gangnam-gu, Seoul 135-080 (KR). (21) International Application Number: (81) Designated States (unless otherwise indicated, for every PCT/KR2011/005679 kind of national protection available): AE, AG, AL, AM, .) . AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, (22) International Filng Date: CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, 2 August 2011 (02.08.2011) DZ, EC, EE, EG, ES, Fl, GB, GD, GE, GH, GM, GT, (25) Filing Language: English HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, (26) Publication Language: English ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, (30) Priority Data: NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, 61/391,080 8 October 2010 (08.10.2010) US SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (71) Applicant (for all designated States except US): LG ELECTRONICS INC. [KR/KR]; 20 Yeouido-dong, (84) Designated States (unless otherwise indicated, for every Yeongdeungpo-gu, Seoul 150-721 (KR). kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, (72) Inventors; and ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, (75) Inventors/Applicants (for US only): KANG, Byeong TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Woo [KR/KR]; LG R&D Complex, 533 Hogye 1-dong, EE, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, Dongan-gu, Anyang-si, Gyeonggi-do 431-749 (KR). LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, LEE, Dae Won [KR/KR]; LG R&D Complex, 533 SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, Hogye 1-dong, Dongan-gu, Anyang-si, Gyeonggi-do GW, ML, MR, NE, SN, TD, TG). 431-749 (KR). SEOK, Yong Ho [KR/KR]; LG R&D Complex, 533 Hogye 1-dong, Dongan-gu, Anyang-si, Published: Gyeonggi-do 431-749 (KR). - with international search report (Art. 21(3)) [Continued on next page] (54) Title: METHOD FOR POWER SAVING IN WIRELESS LOCAL AREA NETWORK AND APPARATUS FOR THE [Fig. 5] Group ID 1, TXOP PS mode indication non-AP STA 4, Nm =0 S510 non-AP STA 3, N- tO non-AP STA 2, N, 0 AP (10) non-AP STA 1, N,, 4 S521b -IAwake state - nonAR ST 4 -4------~---------- ---------- --------- k non-AP STA 4 (24) Awake Awake Group :D 1 state Doze stare state S521a I S522o Awae state non-AP ETA 5 (25) I Awake 1 Awake :Group :D 2 state Doze state state S522a -- : TXOP PS mode not allowed TXOP PS mode allowed (57) Abstract: A method of power saving in a wireless local area network is provided. The method, performed by a wireless de vice, includes acquiring TXOP(transmission opportunity) from access point(AP), the TXOP indicating an interval of time when N the AP has the right to transmit at least one data block for multi user-multiple input multiple output(MU-MIMO) transmission, re ceiving a power saving indicator from the AP, the power saving indicator indicating whether the AP allows to enter doze state during the TXOP, and entering the doze state until the end of the TXOP if the power saving indicator indicates an allowance of entering the doze state. W O 2 0 12/0 4 6 9 5 1 A 1l II |IIll|||lllllIlllllIII|||I|||||||||V|II|||I|I|I|I||I|I|I||||I||||||I|I|||||||||||I| - before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h))