Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Reexamination Certificate
2006-04-12
2009-02-03
Trinh, Tan (Department: 2618)
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
C455S007000, C455S013100, C455S560000, C455S041200
Reexamination Certificate
active
07486928
ABSTRACT:
The present invention provides a system for wireless data communications that allows, in P-MP wireless data communications, equally giving communications opportunities to mobile stations that directly communicate with a wireless base station and mobile stations that indirectly communicate therewith via a relay station and a communications method thereof. In comparison with the OFDM frame configuration prescribed in IEEE802.16, an OFDM frame configuration is characterized in that, in an uplink subframe, a ranging period and BW (bandwidth) request periods for a relay station are provided, and furthermore, a remaining message number notice period for which each relay station notifies the wireless base station of the number of remaining messages is provided. These periods are not of a contention base but bandwidths dedicated to the relay station.
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Izumikawa Haruki
Saito Kenji
Sugiyama Keizo
KDDI Corporation
Trinh Tan
Westerman, Hattori, Daniels & Adrian , LLP.
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