As the result, even if the mobile station receives the up/down/keep signals wrongly at a point t2, both the base station and mobile station are capable of making their TFC pointers coincident with each other. この結果、移動局が時点t2でup/down/keep信号を誤って受信しても、両局のTFCポインタを一致させることができる。 - 特許庁