Patent ID: 8270329
Filing Date: 2012-09-18
Classification: H04W,Y02D

Abstract:
1. A method comprising: receiving, at a first radio of a first network device, channel instructions to monitor at least one frequency channel, the channel instructions included in information received from a second network device, the first radio configured to be powered at least at three different power levels, a first power level characterized as at least equaling the power to enable the first radio to receive data communications over the at least one frequency channel, a second power level characterized as being less than the first power level and at least equaling the power to enable the first radio to monitor energy levels on the at least one frequency channel, and a third power level characterized as being less than the second power level; wherein powering the first radio in the third power level comprises: monitoring, with the first radio, the energy levels of the at least one frequency channel, the first radio operating at the second power level; comparing, in the first device, a value of the energy level on the at least one frequency channel with a predetermined value; upon determining that the value of the energy level on the at least one frequency channel is less than the predetermined value: