METHOD FOR CONTROLLING TRANSMISSION POWER TO HIGH SPEED DOWNLINK PACKET ACCESS SERVICE INDICATOR IN ASYNCHRONOUS MOBILE COMMUNICATION SYSTEM

摘要

PURPOSE: A method for controlling transmission power to a high speed downlink packet access service indicator in an asynchronous mobile communication system is provided to control properly power of a transmission type indicator under any situation in a hand-off region. CONSTITUTION: The first node B(601) is a primary base station for transmitting a forward DCH(Dedicated Channel) and an HS_DSCH(High Speed Downlink Shared Channel) to a UE(User Element)(611). The second node B(603) is a secondary base station(node B) newly included as an active set and transmits only a forward DCH to the UE(611). The UE(611) receives the HS_DSCH and a forward DCH from the first node B(601) and a forward DCH from the second node B(603). The UE(611) also transmits a UL_DCH. The UL_DCH is a signal that the UE(611) transmits without distinction of nodes. The first node B(601) and the second node B(603) receive the UL_DCH transmitted from the UE(611) and analyze a channel state between the node B and the UE.