Patent ID: 6873662

Claim:
A method of wireless communication wherein a signal timing deviation is determined and used to adjust a User Equipment (UE) transmission and wherein the UE transmits signals in bursts of various types that include a midamble and are designated for specific timeslots of system time frames, the method comprising: setting a threshold for measuring the timing deviation based on an energy level of the UE signal and evaluating signal samples which exceed the threshold to determine timing deviation; computing an energy level of the midamble of a received UE burst to determine the energy level used to set the threshold; defining a reception window based on the type of UE burst received and a timeslot designated for reception; sampling UE burst midambles received within the defined window and performing channel estimation to determine midamble channel impulse responses wherein the energy level of the midamble of a received UE burst is computed based on a selected combination of elements of the midamble channel impulse responses and the timing deviation is determined based on a relationship of midamble channel impulse responses to the threshold, wherein the UE bursts have a predefined chip rate, the sampling of UE burst midambles is at twice the chip rate, the channel estimation is performed on even and odd samples of received midambles to produce oversampled midamble channel impulse responses, the energy level of the midamble of a received UE burst is computed based on a summation of squares of non-noise oversampled midamble channel impulse response elements and the timing deviation is determined based on oversampled midamble channel impulse responses whose square exceeds the threshold and wherein the threshold is set at a value equal to the computed the energy level multiplied by a constant which is determined by conducting simulations.