Multiplex communications – Communication over free space – Combining or distributing information via time channels
Reexamination Certificate
2011-06-28
2011-06-28
Ajibade Akonai, Olumide T (Department: 2617)
Multiplex communications
Communication over free space
Combining or distributing information via time channels
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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Bang Seung-Chan
Chang Kapseok
Kim Il-Gyu
Kim Young-Hoon
Ko Young-Jo
Ajibade Akonai Olumide T
Electronics & Telecommunications Research Institute
Kile Park Goekjian Reed & McManus PLLC
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