Patent ID: 7558231
Filing Date: 2009-07-07
Classification: H04W

Abstract:
1. A power allocation method of providing a packet data service with a line service in a mobile communication system having a base transceiver station (BTS) for performing wireless communication with a plurality of mobile stations (MSs), the method comprising the steps of: (a) determining whether or not packet data traffic is generated for a first MS among said plurality of MSs; (b) if it is determined in step (a) that the packet data traffic is generated for the first MS, determining whether or not there is a second MS among said plurality of MSs that is currently using the line service with a call being in progress; (c) if it is determined in step (b) that the second MS is currently using the line service with the call being in progress, determining whether or not there is packet data being transmitted during a current time slot; and (d) if it is determined that the packet data traffic is generated for the first MS when there is no packet data being transmitted during the current time slot, gradually increasing, at each slot time during a period of time, power allocated to the first MS for providing the packet data service to the first MS; wherein said method further comprises the step of calculating said period of time which is required for a signal-to-interference ratio (SIR) of the second MS to be restored to a SIR target value when power allocated to the second MS is changed due to the packet data service, wherein said period of time is calculated from (i) the SIR target value, (ii) peak power of the BTS currently available for the packet data service, and (iii) the power currently allocated to the second MS during the current time slot, and wherein the power allocated to the first MS in step (d) is gradually increased toward said peak power currently available for the packet data service.