Telecommunications – Transmitter and receiver at separate stations – With control signal
Reexamination Certificate
2006-05-23
2006-05-23
Chin, Vivian (Department: 2682)
Telecommunications
Transmitter and receiver at separate stations
With control signal
C455S068000, C455S067110, C455S067130, C455S522000, C370S252000, C375S222000
Reexamination Certificate
active
07050761
ABSTRACT:
To provide a mobile communication system capable of easily performing selection of an optimal transmission mode. Upon receiving a receiving error notice from a mobile station, a transmission mode switching selecting portion of a base station forwards an instruction to switch a transmission mode to a mode slower than a current transmission mode to a modulation/coding portion. After receiving the receiving error notice, if the receiving error notice is not continuously received for a predetermined number of blocks Ns, the transmission mode switching selecting portion forwards an instruction to switch a transmission mode to a mode faster than the current transmission mode to the modulation/coding portion. The modulation/coding portion switches the modulation/coding code to any one of a QPSK modulation/coding circuit, a 16QAM modulation/coding circuit and a 64QAM modulation/coding circuit in response to the switching instruction and performs modulation/coding in the circuit switched to.
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Chin Vivian
McGinn & Gibb PLLC
Tran Tuan
LandOfFree
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