초록 ▼

A mobile radio apparatus includes a base station and a mobile station which communicate with each other by a hybrid code division multiple access scheme. The base station selects a hopping pattern in a frequency hopping method so as to completely avoid overlapping of a carrier for a forward link sig

A mobile radio apparatus includes a base station and a mobile station which communicate with each other by a hybrid code division multiple access scheme. The base station selects a hopping pattern in a frequency hopping method so as to completely avoid overlapping of a carrier for a forward link signal with a carrier for a reverse link signal at the same time, and transmits the forward link signal in a predetermined frequency band. The mobile station similarly transmits the reverse link signal. The mobile station has a multiplier for multiplying the forward link signal by a carrier at the same frequency as the carrier for the forward link signal to derive a received signal, a communication channel correlator for detecting a correlation of the received signal to separate a communication channel signal, a received power level detector circuit for detecting a received power level of the communication channel signal, and a transmission power level control signal for controlling a transmission power level of the reverse link signal, when transmitted to the base station, based on the received power level of the communication channel signal, using a carrier at the same frequency as the carrier for the forward link signal when the received power level of the communication channel signal is detected.

대표청구항 ▼

[ What is claimed is:] [1.] A mobile radio apparatus comprising a base station and a mobile station, each of which comprises communication means according to a hybrid code division multiple access scheme, including a combination of a direct sequence method and a frequency hopping method as a multipl

[ What is claimed is:] [1.] A mobile radio apparatus comprising a base station and a mobile station, each of which comprises communication means according to a hybrid code division multiple access scheme, including a combination of a direct sequence method and a frequency hopping method as a multiple access scheme, wherein:each of said base station and said mobile station comprises means for transmitting and receiving simultaneously, and means for multiplexing a reverse link signal transmitted from said mobile station to said base station and a forward link signal transmitted from said base station to said mobile station within a same frequency band after selecting a hopping pattern so as to completely avoid overlapping said reverse link signal with said forward link signal at the same time; andsaid mobile station further comprises:means for detecting received power levels at all of a plurality of hopping frequencies of a communication channel after correlation detection; andmeans for controlling a transmission power of a transmission signal at a hopping frequency using the received power level detected at the same hopping frequency.