Patent ID: 8391412
Filing Date: 2013-03-05
Classification: H04W

Abstract:
1. In an access terminal that operates in a wireless communication system that includes a base station, a method comprising: making a determination that the access terminal is located greater than a threshold distance from the base station; responsive to at least the determination, embedding in an access request message an apparent distance that is smaller than the threshold distance by phase-shifting a timing signal and encoding the access request message with the phase-shifted timing signal; and transmitting the access request message on an air interface communication link to the base station, the access request message being a request by the access terminal for wireless access, wherein the wireless communication system operates according to a CDMA family of protocol, including IS-2000 and IS-856, wherein the threshold distance is a cell radius measured from the base station, wherein the timing signal is a pseudo-random number (PN) long code, and wherein embedding in the access request message an apparent distance that is smaller than the threshold distance by phase-shifting the timing signal comprises: computing a difference between (i) a distance from the access terminal to the base station and (ii) the cell radius; and phase-shifting the PN long code by a particular number of chips corresponding to at least the difference, thereby generating a shifted PN long code.