Samsung Electronics Co., Ltd.

Woo-Sang Hong

Hwan-Joon Kwon

Ho-Kyu Choi

Young-Kwon Cho

Chang-Hun Bae

Youn-Sun Kim

Sang-Min Bae

Jae-Sung Jang

Se-Hyoung Kim

Ji-Won Ha

Jin-Woo Heo

Yang-Ick Joo

Soo-Bok Yeo

Min-Suk Ko

An apparatus and a method for receiving system information in a mobile communication terminal are provided. In the method, system information including scheduling information for at least one additional system information is received from a base station. Whether validity of the system information is determinable is determined. If it is determined that the validity of the system information is not determinable, system information including scheduling information for at least one additional system information is received again from the base station.

Apparatus and method for receiving system information in mobile communication terminal

A base station PDCCH (Packet Data Control Channel) apparatus for scrambling transmission packet data to prevent other terminals from recognizing the transmission packet data in a base station including a packet data channel device for transmitting packet data to a terminal and a packet data control channel device for transmitting control information needed for demodulation of the packet data to the terminal. In the apparatus, an encoder encodes the control information and generates a coded control information stream comprised of a stream of a plurality of bits. A scrambler generates a scrambling sequence using unique information known to only the terminal and the base station, and scrambles the coded control information stream with the scrambling sequence.

Apparatus and method for scrambling a packet data channel and a packet data control channel in a mobile communication system for high-speed packet transmission

A base station transmission apparatus for transmitting MAC (Medium Access Control) ID (Identification) information indicating a terminal to receive transmission packet data and length information of the transmission packet data in a mobile communication system for high-speed packet transmission, having an encoder for encoding a bit stream indicating the MAC ID information and generating coded symbols; a Walsh cover section for Walsh-covering the coded symbols from the encoder with a Walsh code based on the length information; and a Walsh spreader for spreading the Walsh-covered symbols from the Walsh cover section with a predetermined Walsh code.

Apparatus and method for communicating packet data control channel in a mobile communication system

Disclosed is a reception apparatus and method of a mobile station in a Software Defined Radio (SDR) mobile communication system. A radio frequency (RF) processor converts a received RF signal into a digital signal, and outputs data on a per-unit basis according to a predetermined clock. An external memory stores the output data in a predetermined buffer area. A digital signal processing unit reads stored data samples and performs digital signal processing on the read data samples while storing the data in the external memory is completed.

Reception apparatus and method of a mobile station in an mobile communication system

An apparatus and method for receiving control information transmitted from a transmitter using one of a plurality of slot lengths in a high-speed packet transmission mobile communication system is provided. The apparatus and method includes a decoder adapted to receive symbols by the slot, and generate at least one bit stream by decoding as many symbols of at least one possible slot length among a plurality of slot lengths according to a previous decoding result. An error checker adapted to perform error checking on the bit stream from the decoder. A controller is adapted to provide symbols of one more consecutive slot to the decoder, if the error checking failed, and acquire control information from the error checking-passed bit stream, if the error check passed. The decoder is further adapted to output at least one frame quality metric for the bit stream along with the bit stream. If the number of error checking-passed bit streams is larger than or equal to 2, the controller compares frame quality metrics for the bit streams and selects one bit stream having the maximum frame quality metric in order to acquire the control information.

Apparatus and method for receiving packet data control channel in a mobile communication system

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Seoul, South Korea

Woo-Sang Hong