Patent ID: 7593451
Filing Date: 2009-09-22
Classification: H04B,H04J

Abstract:
1. A terminal reception apparatus for receiving MAC (Medium Access Control) ID (Identification) information indicating a terminal to receive packet data transmitted by a base station and length information of the packet data in a mobile communication system for high-speed packet transmission, comprising: a despreader for extracting symbols of a packet data control channel over which the MAC ID information and the length information are transmitted, by despreading a received signal with a Walsh code; an energy detector for measuring energy of symbols output from the despreader and generating a packet data control detection signal when the measured energy value is greater than a threshold; a length information generator operable in response to the packet data control detection signal, for extracting a Walsh code having a peak value by performing inverse fast Hadamard transform on the symbols from the despreader using a determined Walsh code based on the length information, and generating the length information according to the extracted Walsh code; a Walsh decover section for Walsh-decovering the symbols from the despreader with the extracted Walsh code; and a decoder for generating the MAC ID information by decoding symbols from the Walsh decover section.