Multiplex communications – Communication over free space – Combining or distributing information via frequency channels
Reexamination Certificate
2011-06-14
2011-06-14
Sheikh, Ayaz R (Department: 2476)
Multiplex communications
Communication over free space
Combining or distributing information via frequency channels
C370S430000
Reexamination Certificate
active
07961699
ABSTRACT:
A transmitting apparatus which transmits a transmit symbol in orthogonal-frequency division multiplexing (OFDM) is disclosed. The transmitting apparatus includes a unit which provides a unicast channel; a unit which provides a multimedia broadcast multicast service (MBMS) channel; a unit which provides a specific pilot channel which is specific to a specified cell; a unit which provides one or more common pilot channels common to a plurality of cells; and a multiplexing unit which multiplexes the unicast channel, the MBMS channel, the specific pilot channel, and the one or more common pilot channels, and creates the transmit symbol, wherein the multiplexing unit time-division multiplexes, in the same frequency band, a unicast frame which includes the unicast channel, and an MBMS frame which includes the MBMS channel, and wherein an insertion density of the common pilot channel included in the MBMS frame is larger than an insertion density of the specific pilot channel included in the unicast frame.
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Higuchi Kenichi
Kishiyama Yoshihisa
Miki Nobuhiko
Morimoto Akihito
Sawahashi Mamoru
Moutaouakil Mounir
NTT Docomo Inc.
Osha • Liang LLP
Sheikh Ayaz R
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