Patent ID: 8055273

Claim:
A method of searching for a target spread spectrum signal transmitted by a target transmitter in a spread spectrum communication system, said method comprising: determining a direction of motion and speed of said mobile station relative to said target transmitter; determining a previously-measured phase of said target spread spectrum signal, wherein said previously-measured phase was previously measured by said mobile station; determining that said speed is greater than a first threshold value; defining a search window such that a first portion of said search window is before said previously-measured phase and a second portion of said search window is after said previously-measured phase, wherein said first portion is larger than said second portion when said direction of motion is toward said target transmitter and said first portion is smaller than said second portion when said direction of motion is away from said target transmitter; and said mobile station searching for a spread spectrum signal having a phase at said mobile station that is within said search window.