초록 ▼

A synchronization (sync) code communication device for a 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 c

A synchronization (sync) code communication device for a 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.

대표청구항 ▼

A synchronization (sync) code communication device for a 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 c

A synchronization (sync) code communication device for a 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. ox, 359/019; US-4499569, 19850200, Lopez De Romana, 369/044.23; US-4502783, 19850300, Lau et al., 359/495; US-4504935, 19850300, Jansen, 369/032; US-4514837, 19850400, Van Rosmalen, 369/219; US-4524444, 19850600, Efron et al., 369/053; US-4536863, 19850800, Giddings, 369/043; US-4542429, 19850900, Nishida et al., 360/103; US-4554653, 19851100, Malissin et al.; US-RE32051, 19851200, Ceshkovsky et al., 369/044.28; US-4561081, 19851200, Janssen et al.; US-4562577, 19851200, Glover et al., 369/032; US-4568142, 19860200, Iguma, 359/819; US-4571026, 19860200, Maurta, 369/044.17; US-4571716, 19860200, Szerlip, 369/054; US-4583210, 19860400, Winslow, 369/054; US-4592037, 19860500, Ohnuki, 369/044.15; US-4596444, 19860600, Ushida, 369/044.15; US-4596448, 19860600, Kikuchi, 369/044.15; US-4598324, 19860700, Efron et al., 369/058; US-4603363, 19860700, Rickert et al., 360/086; US-4603412, 19860700, Yamazaki; US-4607913, 19860800, Jansen; US-4611318, 19860900, Winslow, 369/054; US-4616355, 19861000, Kasahara; US-4623837, 19861100, Efron et al., 324/076.22; US-4627038, 19861200, Abed et al., 369/044.28; US-4633471, 19861200, Perera et al., 371/037.7; US-4638377, 19870100, Dakin, 386/104; US-4643522, 19870200, Takashima, 369/044.17; US-4644516, 19870200, Musha, 369/043; US-4646283, 19870200, Ito et al., 369/256; US-4669073, 19870500, Wakabayashi et al., 369/111; US-RE32431, 19870600, Dakin et al., 369/050; US-4677605, 19870600, Abed; US-4679904, 19870700, Kurihara, 369/044.15; US-4682246, 19870700, Efron et al., 369/058; US-4688204, 19870800, Noyes, Jr. et al., 369/059; US-4694447, 19870900, Cohen et al., 369/112; US-4696566, 19870900, Sekimoto et al., 369/044.15; US-4697167, 19870900, O'Keeffe et al., 369/059; US-4701898, 19871000, Giddings, 369/032; US-4702555, 19871000, Iguma et al., 369/044.16; US-4703368, 19871000, Dakin, 386/101; US