METHOD AND SYSTEM FOR FORWARD LINK CELL SWITCHING APPROACH WITHOUT ABIS TRAFFIC FLOODING IN CDMA2000-1x EV-DV SYSTEM

摘要

The invention is a system and a method in a system including a mobile station (MS), a group of active cells including a first serving cell (cell a) and a second target cell (cell b) and a controller of the active cells which switches forward link transmissions of data packets from the controller (BSC) through the first serving cell to the mobile station to forward link transmission of data packets from the controller through a second cell to the mobile station. The method determines at the mobile station that swtiching of forward link transmissions should occur from the first serving cell to the second target cell while forward link transmission of the data packets through the first serving cell to the mobile station are occurring; transmitting an indication to switch the forward link transmission of data packets to the second target cell b from the mobile station to the controller; the controller in response to the indication switches the transmission of data packets from the first serving cell a to the second target cell b; and the second target cell transmits the data packets to the mobile station. A cell switch delay, which may be zero or an integer multiple of a time frame interval required to transmit a data packet on the forward link, provides time to ready the second target cell b to begin transmission of the data packets to the mobile station. The cell switch delay may be determined or configured by the network dependent upon the source and target pilots in the active set are within the same BTS or are in different cells.