Patent SG-11201905066T-A (SG)
Title: Methods and systems for coordinating distributed mimo communications
Inventor: CHERIAN GEORGE
IPC: H04B7/0452
Filed: 2017-12-28
Abstract: CSMAbackoff/count-down Trigger Frame Data SIFS Checks CS state before transmission FIG. (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 26 July 2018 (26.07.2018) WIP0 I PCT omit Ill °nolo OH mom° oimIE (10) International Publication Number WO 2018/136216 Al (51) International Patent Classification: H04B 7/0452 (2017.01) H04W 52/02 (2009.01) H04W 84/12 (2009.01) H04W 72/12 (2009.01) HO4W 74/08 (2009.01) (21) International Application Number: PCT/US2017/068662 (22) International Filing Date: 28 December 2017 (28.12.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/447,314 17 January 2017 (17.01.2017) US 15/835,231 07 December 2017 (07.12.2017) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (72) Inventors: CHERIAN, George; c/o QUALCOMM In- corporated, ATTN: International IP Administration, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). MERLIN, Simone; c/o QUALCOMM Incorporated, AT- TN: International IP Administration, 5775 Morehouse Dri- ve, San Diego, California 92121-1714 (US). ASTERJAD- HI, Alfred; c/o QUALCOMM Incorporated, ATTN: In- ternational IP Administration, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). ZHOU, Yan; c/o QUALCOMM Incorporated, ATTN: International IP Ad- ministration, 5775 Morehouse Drive, San Diego, Califor- nia 92121-1714 (US). PATIL, Abhishek Pramod; c/o QUALCOMM Incorporated, ATTN: International IP Ad- ministration, 5775 Morehouse Drive, San Diego, Califor- nia 92121-1714 (US). VENKATACHALAM JAYARA- MAN, Venkata Ramanan; 10625 Calle Mar De Mariposa, Apt. 2211, San Diego, California 92130 (US). (74) Agent: ABUMERI, Mark M.; KNOBBE MARTENS OLSON & BEAR LLP, 2040 Main Street, Fourteenth Floor, Irvine, California 92614 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, (54) Title: METHODS AND SYSTEMS FOR COORDINATING DISTRIBUTED MIMO COMMUNICATIONS 610 600 605 615a 602 Cluster Leader Member AP-1 15b Data No Data Sent due to CS Monitor CCA & NAV Busy Member AP-2 11 11 11 (57) : Methods and systems for coordinating simultaneous transmission by two or more access points over a single channel of a wireless medium are disclosed. In one aspect, a method includes determining, by a first access point, a time when the first access 0 point and a second access point will transmit simultaneously over the channel, and transmitting, by the first access point, over the \" channel at the time. C [Continued on next page] Monitor CCA & NAV WO 2018/136216 Al MIDEDIMOMOIDEIREEMOMMIMEIHOIROMEHOM HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3))