Cell search method, forward link frame transmission method,...

Multiplex communications – Communication over free space – Combining or distributing information via time channels

Reexamination Certificate

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C370S208000, C370S324000, C370S503000, C370S506000, C370S508000, C370S509000, C370S510000, C370S512000, C370S513000, C370S514000, C455S502000

Reexamination Certificate

active

07969964

ABSTRACT:
In a cellular system in which OFDM is used, a forward link synchronization channel, a common pilot channel structure, an initial cell searching method of a mobile station, and an adjacent cell searching method for handover are required.A method of transmitting a forward synchronization signal in a wireless communication system according to the present invention includes generating a frame comprised of a plurality of sync blocks; and transmitting the frame through a forward link, wherein the frame comprises primary synchronization channel sequences which provide timing information of the sync blocks and a plurality of secondary synchronization channel sequences which provide timing information of the frame, wherein a cell identifier is specified by a combination of the primary synchronization channel sequence and a hopping code word specified by the plurality of the secondary synchronization channel sequences. Therefore, the cell searching time can be efficiently reduced in an OFDM system.

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