Patent ID: 6996155
Filing Date: 2006-02-07
Classification: H04B,H04J,H04L,H04W

Abstract:
1. A method of wireless transmission of information, comprising: (a) transmitting a signal comprising a single preamble randomly selected from among a group of available preambles, at a power level; (b) determining if number of preamble transmissions has reached a limit; (c) determining if an acknowledgement corresponding a preamble transmission is received from a base station; (d) if the number of preamble transmissions has not reached the limit and there has been no receipt of a corresponding acknowledgement, repeating step (a) at a higher power level and repeating steps (b) and (c); (e) ceasing transmitting of the signal, upon any determination at (b) that the number of preamble transmissions has reached the limit; and (f) upon any determination at (c) that a corresponding acknowledgement is received from the base station, initiating transmission of information over a wireless spread-spectrum uplink channel to the base station.