Patent SG-11201905065U-A (SG)
Title: Methods and systems for cross bss sounding
Inventor: CHERIAN GEORGE
IPC: H04W72/04
Filed: 2018-01-08
Abstract: Reportrb Report (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 VIII °nolo OH voimiflo oimIE (10) International Publication Number WO 2018/136254 Al (51) International Patent Classification: H04B 7/0413 (2017.01) HO4B 7/06 (2006.01) H04L 25/02 (2006.01) HO4W 72/04 (2009.01) HO4B 7/0417 (2017.01) H04W 84/12 (2009.01) (21) International Application Number: PCT/US2018/012794 (22) International Filing Date: 08 January 2018 (08.01.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/447,272 17 January 2017 (17.01.2017) US 15/842,781 14 December 2017 (14.12.2017) 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, Cal- ifornia 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, 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, (54) Title: METHODS AND SYSTEMS FOR CROSS BSS SOUNDING (57) : Methods and systems for sounding a wireless network are dis- closed. In one aspect, a method includes receiving, by an access point a mes- sage including a beamforming report from a device. The device may be a sta- r 510a tion that is outside a basic service set of the access point. The method also in- cludes transmitting a message to the device based on the beamforming report. For example, in some aspects, the access point may utilize the beamforming report to perform a coordinated beamforming, multi-access point transmis- sion or a multi-access point MIMO transmission. In some aspects, the access point may transmit an interference nulling signal to the device based on the beamforming report. The nulling signal compensates for another simultaneous transmission by the access point that interferes with the device's reception of a message from an access point with which the device is associated. AP 104b 510c STA 106c Report r 510d STA 106d 11 00 C 11 Report FIG. 5 [Continued on next page] AP 104a = STA 106a STA 106b r 502 r - 504 r 506 NDP- A NDP Trigger WO 2018/136254 Al MIDEDIMOMOIDEIREEMOMMIMEIDENHIMEHOIS 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))