Patent ID: 7346034

Claim:
A cellular system including: at least one mobile station being concurrently linked through dedicated physical channels to plural link base stations in a soft handover state, wherein at least one packet-transmitting base station of said plural base stations transmits at least one packet through a common channel to said at least one mobile station, wherein said at least one mobile station includes: a first transmission power control function of controlling a current transmission power of an up-link of said dedicated physical channel based on a first transmission power control information included in down-links of said dedicated physical channels of said plural link base stations; and a second transmission power control function of controlling said current transmission power of said up-link of said dedicated physical channel based on a second transmission power control information included in a down-link of said dedicated physical channel of said at least one packet-transmitting base station, wherein if said at least one mobile station is placed in a first state to receive a packet from said at least one packet-transmitting base station, then said at least one mobile station activates said second transmission power control function, and wherein if said at least one mobile station is placed in a second state other than said first state, then said at least one mobile station activates said first transmission power control function, and wherein after said at least one mobile station has been placed in said first state, then said second transmission power control function decides an off-set power based on said second transmission power control information and increases said current transmission power by said off-set power, before said at least one mobile station will make a first transmission of an acknowledge/non-acknowledge signal to said at least one packet-transmitting base station.