Apparatus and method of transmitting and receiving data in soft handoff of a wireless communication system
The present invention relates to a method of transmitting and receiving data in soft handoff of a wireless communication system. According to an aspect of the present invention, in the method of receiving data in soft handoff of a wireless communication system, a mobile station receives a first sequence being generated by interleaving transmission data using a first interleaver pattern, and also receives a second sequence being generated by interleaving the transmission data using a second interleaver pattern. Then, the mobile station combines and decodes the first sequence and the second sequence before receiving an entire frame having the first sequence allocated thereto.
1. A method of transmitting acknowledgement at a mobile station in soft handoff in a wireless communication system, the method comprising:
transmitting the acknowledgement at a specific time,
wherein the mobile station attempts decoding a frame earlier than a predetermined duration of the frame,
wherein the decoding is performed by combining a first transmission to which a first interleaver pattern has been applied for bit-level interleaving by a first base station and a second transmission to which a second interleaver pattern has been applied for bit-level interleaving by a second base station,
wherein the specific time is after a successful decoding of the frame and within the predetermined duration of the frame, and
wherein a first interleaved result of the first transmission is cyclically shifted with respect to a second interleaved result of the second transmission.
2. The method according to claim 1 ,
wherein the specific time is specified by the first base station.
3. The method according to claim 1 ,
wherein the first interleaved result is cyclically shifted by one-half a length with respect to the second interleaved result.
4. The method according to claim 1 ,
wherein the first transmission and the second transmission are encoded with convolutional codes.
5. The method according to claim 1 ,
wherein the predetermined duration of the frame is 20 ms.
6. A mobile station for transmitting acknowledgement in soft handoff in a wireless communication system, the mobile station comprising:
a transmitting module configured to transmit the acknowledgement at a specific time,
means for decoding a frame earlier than a predetermined duration of the frame,
wherein the decoding is performed by combining a first transmission to which a first interleaver pattern has been applied for bit-level interleaving by a first base station and a second transmission to which a second interleaver pattern has been applied for bit-level interleaving by a second base station,
wherein the specific time is after a successful decoding of the frame and within the predetermined duration of the frame, and
wherein a first interleaved result of the first transmission is cyclically shifted with respect to a second interleaved result of the second transmission.