Patent SG-11201808343W-A (SG)
Title: Dynamic cyclic prefix (cp) length in wireless communication
Inventor: CHEN WANSHI
IPC: H04L27/26
Filed: 2017-05-05
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property :::` , Organization 03 111111411 0 11101 HOE 010 1111 1 0 I 1111111111111111111111011111111101111011111 International Bureau (10) International Publication Number (43) International Publication Date .....•\"\"- WO 2017/196684 Al 16 November 2017 (16.11.2017) WIPO I PCT (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every HO4L 27/26 (2006.01) kind of national protection available): AE, AG, AL, AM, (21) International Application Number: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, PCT/US2017/031443 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, (22) International Filing Date: HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, 05 May 2017 (05.05.2017) 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, (25) Filing Language: English PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, (26) Publication Language: English SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, (30) Priority Data: TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. 62/334,566 11 May 2016 (11.05.2016) US (84) Designated States (unless otherwise indicated, for every 15/288,884 07 October 2016 (07.10.2016) US kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, (71) Applicant: QUALCOMM INCORPORATED [US/US]; UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, ATTN: International IP Administration, 5775 Morehouse TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Drive, San Diego, California 92121-1714 (US). EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, (72) Inventors: CHEN, Wanshi; 5775 Morehouse Drive, San MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, Diego, California 92121-1714 (US). GAAL, Peter; 5775 TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, _ Morehouse Drive, San Diego, California 92121-1714 (US). KM, ML, MR, NE, SN, TD, TG). JI, Tingfang; 5775 Morehouse Drive, San Diego, Califor- nia 92121-1714 (US). = Agent: BURGESS, Jeffrey; Loza & Loza, LLP, 305 North = (74) Second Avenue #127, Upland, California 91786 (US). Title: DYNAMIC CYCLIC PREFIX (CP) LENGTH IN WIRELESS COMMUNICATION = (54) (57) : An apparatus may determine a cyclic prefix (CP) length = for a signal for a communication link based on a dynamic indication. 700 The CP length may be determined from a plurality of CP lengths. The = .4. ) apparatus may communicate the signal using the determined CP length. Determining the CP length may be further based on at least one of a modulation and coding scheme, a subcarrier spacing, a service type, a = ( START ) communication link direction, a rank number, a type or a capability of = the node, or a number of nodes scheduled in the same transmit time = V (-702 interval. Determining the CP length may include determining a first CP length for a first symbol of a plurality of symbols in the TTI, and determining a second CP length, different than the first CP length, for = Determine at least one of a ey lic prefix (CP) length or a tone spacing fora signal fora communication link based on a dynamic indication, wherein the CP length is determined from a plurality of CP lengths, and the tone spacing is determined from a plurality of = = — tone spacings a second symbol of the plurality of symbols in the TTI. Various addi- tional and alternative aspects are described herein. v r 704 = Communicate the signal utilizing the determined at least one of the CP length or tl e tone spacing . Il END 71' GC 0\ 1-1 —..... IN 1-1 FIG. 7 0 r'l o [Continued on next page] WO 2017/196684 Al MIDEDIMOMMIDIRMEMOMOHEMEMMOHEMOVOIMIE Declarations under Rule 4.17: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) — as to the applicant's entitlement to claim the earlier application (Rule 4.17(iii)) priority of the Published: — with international search report (Art. 21(3))