RELATIVE RATE GRANT CHANNEL TRANSMISSION METHOD, MOBILE STATION, WIRELESS BASE STATION, AND WIRELESS CHANNEL CONTROL STATION

摘要

PROBLEM TO BE SOLVED: To set a threshold value for judging a value assigned to a relative rate grant channel by taking into account collapse of the orthogonality under a high rate fading environment to thereby improve the performance of the HARQ and attain increase in the transmission efficiency.

SOLUTION: A relative rate grant channel transmission method disclosed herein includes: a step where a wireless base station uses a plurality of orthogonal code sequences to transmit relative rate grant channels addressed to each mobile station and multiplexed on one channel, and a wireless channel control station ensures one orthogonal code sequence selected from a plurality of the orthogonal code sequences for a judgment code sequence without being used for multiplexing the relative rate grant channels; a step where the wireless channel control station informs each mobile station about the judgment code sequence; and a step where each mobile station judges the value assigned to the relative rate grant channels addressed to each mobile station by using the orthogonal code sequences used for multiplexing the relative rate grant channels addressed to each mobile station and the judgment code sequence.

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