Patent ID: 9042491
Filing Date: 2015-05-26
Classification: H04B,H04L

Abstract:
1. A method of demodulating a paging message during an assigned time slot by a wireless communications apparatus operating in an idle mode, the method comprising: determining, in anticipation of the assigned time slot, an expected time position corresponding to a path of a pilot signal having a greater signal strength relative to other pilot signals; assigning a first demodulation element of a rake receiver to demodulate the pilot signal with reference to the expected time position; assigning a second demodulation element of the rake receiver to demodulate the pilot signal with reference to a time offset from the expected time position, wherein the time offset is a first time offset; assigning a third demodulation element of the rake receiver to demodulate the pilot signal with reference to a second time offset from the expected time position, wherein the second time offset is different than the first time offset; and demodulating a signal to detect the paging message based at least in part on successfully demodulating the pilot signal using at least the first, second, or third demodulation element; wherein one of the following applies: the second time offset is substantially equal to and opposite from the first time offset; the first time offset corresponds to substantially one chip position ahead of the expected time position, and wherein the second time offset corresponds to one chip position behind the expected time position; or successfully demodulating the pilot signal comprises successfully demodulating the pilot signal when an actual time position of the pilot signal, due to drift, is up to substantially one and one-half chip positions from the expected time position.