Patent CA-2334898-C (CA)
Title: Apparatus and method for synchronizing channels in a w-cdma communication system
Inventor: AHN JAE-MIN
IPC: H04B1/7083
Filed: 2000-04-29
Granted: 2007-06-05
Abstract: PCT WORLD INTELLECTUAL PROPERTY ORGANIZATION   International Bureau INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (51) International Patent Classification 7: (11) International Publication Number: WO 00/67399 H04B 7/216 Al (43) International Publication Date: 9 November 2000 (09.11.00) (21) International Application Number: PCT/KR00/00408 (74) Agent: LEE, Keon-Joo; Mihwa Building, 110-2, Myon-gryun-dong 4-ga, Chongro-gu, Seoul 110-524 (KR). (22) International Filing Date: 29 Apri1 2000 (29.04.00) (81) Designated States: AU, CA, CN, JP, European patent (AT, (30) Priority Data: BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, rT, LU, 1999/15332 29 April 1999 (29.04.99) KR MC, NL, PT, SE). 1999/18921 25 May 1999 (25.05.99) KR     Published (71) Applicant: SAMSUNG ELECTRONICS CO., LTD. [KR/KR]; With international search report. 416, Maetan-dong, Paldal-gu, Suwon-shi, Kyungki-do Before the expiration of the time limit for amending the 442-370 (KR). claims and to be republished in the event of the receipt of amendments.  (72) Inventors: MOON, Hi-Chan; 391, Pungnap-dong, Songpa-gu, Seoul 138-170 (KR). LIM, Chae-Man; 765, Kuro-dong, Kuro-gu, Seoul 152-050 (KR). MAENG, Seung-Joo;  201-1001, Maehwamaeul, Yatap-dong, Puntang-gu, Songnam-shi, Kyonggi-do 463-050 (KR). YOON, Soon-Young; 165, Karak-dong, Songpa-gu, Seoul 138-170 (KR). LEE, Hyeon-Woo; Beoksan APT.  #806-901 Kwonson-dong, Kwonson-gu, Suwon-shi, Kyonggi-do 441-130 (KR). KANG, Heo-Won; 1499, My-onmok-dong, Chungnang-gu, Seoul 131-200 (KR). AHN, Jae-Min; Puleun Samho APT. #109-303, Irwonpon-dong, Kangnam-gu, Seoul 135-239 (KR).   (54) Title: APPARARUS AND METHOD FOR SYNCHRONIZING CHANNELS IN A W-CDMA  COMMUNICATION SYSTEM  (57) Abstract A synchronization (sync) code communication device for an CDMA communication system. A  base station sync code transmission device comprises a primary sync code transmitter and a secondary sync code transmitter. The primary sync code transmitter is for generating and then transmitting a primary sync code at a first location in a transmission frame.   The primary sync code is for acquiring synchronization at a   starting point of a frame and the frame is equal to one period of a spreading code. The secondary sync code transmitter is for generating and then transmitting a secondary sync code at a second location in a frame. The secondary sync codes are assigned to base station groups, one to a group. A  mobile station sync code receiving device comprises a primary sync code acquisition decider and a base station group decider. The primary sync code acquisition decider is for acquiring a primary sync code received at a first location in a frame, and then acquiring synchronization at a starting point of a frame. The base station group decider is enabled upon acquisition of the primary sync code, receives a secondary sync code transmitted at a second location in the frame, and then determines the base station group to which the transmitting base station belongs.