Patent AU-2013275822-A1 (AU)
Title: Method for determining timing advance, user equipment and base station
Inventor: LI BIN
IPC: H04W56/00
Filed: 2013-07-25
Abstract: (12) tflIA*&PieSA IW (10) (43)E~# WO 2013/185687 A1 2013 * 12 T] 19 H (19.12.2013) WIPO I PCT (51) $4#*&I (74) 1WA: 4h* WM RE H04W56/00 (2009.01) (AFD CHINA INTELLECTUAL PROPERTY LAW (21) MR*": PCT/CN2013/080062 OFFICE); r N I L T M Y 8 V: B r 1601A, Beijing 100192 (CN)o (22) $4*fl 2013 $ 7 A9 25 H (25.07.2013) (81) [$t I1 (25) $fla: )P): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, (26) A-ws : CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, Fl, GB, (30) gt$ GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, 201210279976.8 2012 4 8 A9 8 H (08.08.2012) CN KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MNX, MY, MZ, (71) iK 3fiWR4kq (ZTE CORPORA- NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, TION) [CN/CN]; 1:J N F t V[, V )[tM iEXAMR RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, [t R M PR M At A, Guangdong SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, 518057 (CN)o VN, ZA, ZM, ZW0 (72) At A : (LI, Bin); dJ V [t Mni E (84) -t( w t WTTV~ntf tdZ )t): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, Y,' f'jQh RK MCGuangdong 518057 (CN)0 #K& RW, SD, SL, SZ, TZ, UG, ZM, ZW), r A (AM, AZ, -- (ZHANG, Wenzhong); Fd1 J 'W H M BY, KG, KZ, RU, TJ, TM), RU)'K (AL, AT, BE, BG, CH, S A 0 R R NP R Am m ltj YI + A aCY, CZ, DE, DK, EE, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, W YJQ~h~Th&&JP , Guangdong 518057 (CN)0 RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)o (54) Title: METHOD FOR DETERMINING TIMING ADVANCE, USER EQUIPMENT AND BASE STATION ~S3OlS301 UE TRANSMITTING A RANDOM ACCESS UEtMIILTE,JEM 1,3b Af 1<X SUBFRAME USING THE FORMAT 3 SPECIFIED BY LTE S302 A BASE STATION PERFORMING RANDOM ACCESS -J M# MMAt .k il-TAIi-1- S302 DETECTION BASED ON A SINGLE WINDOW TO OBTAIN AN ESTIMATED VALUE OF TA S303 INFORMING THE UE OF THE ESTIMATED VALUE OF -A-Y3I lS304 THE UE CALCULATING A TIME SEQUENCE Jt A[dl[tI~~ t~l'ADJUSTMENT SET ACCORDING TO THE ESTIMATED VALUE OF TAAND A CELL COVERAGE DISTANCE S305 THE UE ADJUSTING UPLINK MSG3 TRANSMISSION UlEhrjTA[ F If E J S304 TIME SEQUENCES RESPECTIVELY ACCORDING TO THE lIT j~j~VALUES OF THE ELEMENTS IN THE SET, AND TRANSMITTING SAME ACCORDING TO THE ADJUSTED s315 S306 A BASE STATION END DETECTING MSG3 IN I> <T~~t y ~SEQUENCE AND FEEDING RACK ACK/NACK TO THE UE S307 WHEN RECEIVING THE ACK, THE UE STOPPING THE TRANSMISSION OF MSG3 AND TAKING THE LAST h m 3 ACK NAK 306 USED TRANSMISSION ADJUSTMENT TIME SEQUENCE i TAS AN ACTUAL ACCESS TIME BIAS VALUE F dACI j, 11 F 117l 3I /Fig. 3 (57) Abstract: Provided are a method for determining timing advance, user equipment and a base station. In the case of not chan If ging the protocol, a larger cell radius can be supported, the complexity of a device required is relatively small, and a correct time bias value is obtained by means of a UE side performing transmission in msg3 using different TA adjustment values, so that the ac cess delay of a PRACH is reduced to the greatest extent, the overhead of a PRACH subframe will not be increased, and the deterior ation of system performance can be avoided, thereby enabling application to LTE systems of both TDD and FDD. T n/Ma##{, r:F--A k /JI, T tfM UE KJ)%A msg3 3R M TW rlt TA i ttlf)tt R{E n, H1, TPRACH -jT#vt5L Tt JQ PRACH #ThTF, N i tt[±tfl%4{, 4FN f-jRtif T #TDD3P] FDDflLTE htXo W O 2 0 13 /18 5 6 8 7 A 1 |l III |IIll|||IIllllllII |||||I ||||||||I||||||||||I||I|I|I||||||II||||||||||||||||I| & |wm 4.17 fl}ffl): _ - t i $ t%# tJd( T 9( 4.17(ii)) le a r 110A i (M Yl 48.2(h)) - HA) A tff(W 91 4.17(iv)) - FP Af) A ( A4%, M 21 *(2)(a)))fTiQ - 'R MN V2T A'$, ST "p' 21 N(3)),o