Patent ID: 6519278
Filing Date: 2003-02-11
Classification: H04J,H04L

Abstract:
Transmitting/receiving apparatuses installed in a base station and a mobile station, respectively, to perform mutual transmission and reception by using a plurality of spreading codes,said transmitting/receiving apparatus installed in said base station comprising means for designating to said mobile station kind and number of spreading codes to be used in a reverse link from said mobile station to said base station through a forward link from said base station to said mobile station at the time that communication with said mobile station is started, said transmitting/receiving apparatus installed in said mobile station comprising means for transmitting a signal to said base station by using the spreading codes of the designated kind and number, and said transmitting/receiving apparatus installed in said base station further comprising means for detecting receiving quality values of the signal transmitted from said mobile station with respect to individual spreading codes used in said mobile station, means for deciding whether the detected receiving quality values exceed a prescribed quality value, and means for finally setting kind and number of spreading codes to be used in said reverse link on the basis of spreading codes for which the detected receiving quality values are determined to exceed the prescribed quality value.