Patent ID: 8145230
Filing Date: 2012-03-27
Classification: H04W

Abstract:
1. A method, with a wireless device, for dynamically accessing spectrum in an opportunistic spectrum access wireless communication system, the method comprising: transmitting, from a wireless device, a signal having a first bandwidth being equal to or nearly equal to a bandwidth of an unoccupied portion of spectrum within the unoccupied portion of spectrum; and after a time interval following the transmitting, and upon determining that an adjacent spectral quantum is occupied, transmitting from the wireless device a signal having a second bandwidth, wherein the second bandwidth is less than the first bandwidth, wherein in response to determining that only one spectral quantum is unoccupied, the wireless device growing its transmitted signal occupied bandwidth toward the unoccupied spectral quantum at a third rate of growth and attempting to grow its transmitted signal occupied bandwidth toward the other of the two spectral quanta at a fourth rate of growth, the third rate being greater than the fourth rate.