Patent ID: 7623484

Claim:
A method of multipath acquisition, at a base station receiver, for a dedicated uplink traffic channel, the method comprising: calculating a frame energy metric of a control part of the traffic channel for each of a plurality of path positions received by the base station receiver, wherein the calculating the frame energy metric for each of the plurality of path positions includes, descrambling and despreading a filtered output of a traffic channel frame received by the base station receiver into a plurality of output symbols corresponding to control information in the control part of the traffic channel frame, the traffic channel frame corresponding to a given one of the plurality of path positions, and the control information including at least transmit power control (TPC) bits; accumulating output symbols corresponding to pilot signal bits within a slot of the traffic channel frame and output symbols corresponding to TPC bits within a slot of the traffic channel frame, calculating L2 norms for the accumulated output pilot symbols and L2 norms for the accumulated output TPC symbols, and accumulating the L2 norms to generate the frame energy metric for a given one of the plurality of path positions; comparing the frame energy metric for each path position to a threshold; and reporting the path positions with a frame energy metric exceeding the threshold to processing circuitry within the base station receiver.