| US 7,593,451 B2 | ||
| Apparatus and method for communicating packet data control channel in a mobile communication system | ||
| Hwan-Joon Kwon, Seoul (Korea, Republic of); Ho-Kyu Choi, Songnam-shi (Korea, Republic of); Young-Kwon Cho, Suwon-shi (Korea, Republic of); Woo-Sang Hong, Seoul (Korea, Republic of); Chang-Hun Bae, Seoul (Korea, Republic of); Youn-Sun Kim, Seoul (Korea, Republic of); and Jae-Sung Jang, Kwachon-shi (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd, (Korea, Republic of) | ||
| Filed on Oct. 24, 2007, as Appl. No. 11/923,346. | ||
| Application 11/923346 is a division of application No. 10/096153, filed on Mar. 11, 2002, granted, now 7,440,485. | ||
| Claims priority of application No. 2001-12475 (KR), filed on Mar. 10, 2001; application No. 2001-14161 (KR), filed on Mar. 19, 2001; and application No. 2001-19373 (KR), filed on Apr. 11, 2001. | ||
| Prior Publication US 2008/0043683 A1, Feb. 21, 2008 | ||
| Int. Cl. H04B 1/707 (2006.01) | ||
| U.S. Cl. 375—147 | 5 Claims |
| 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.
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