Patent ID: 7515556

Claim:
A system for receiving at least one data packet, the system comprising: a sleep manager having an output coupled to an input of a radio, the sleep manager for: providing at the sleep manager output a first signal for causing the radio to draw power, for a first amount of time, at a first level below a level which is used to receive at least one data packet; and providing a second at the sleep manager output substantially at the end of the first amount of time; and wherein the radio attempts to receive and provide at an output a set of data, at least in part responsive to the second signal at the sleep manager second output; and the system additionally comprising a chirp packet delimiter manager having an input coupled to the radio output for receiving the set of data, the chirp packet delimiter manager for determining whether the set of data corresponds to a first packet type, and responsive to the set of data corresponding to the first packet type, identifying a second amount of time, responsive to the set of data, and for providing the second amount of time at a chirp packet delimiter manager output coupled to a sleep manager input; and wherein the sleep manager is additionally for, responsive to the second amount of time received at the sleep manager input, providing at the sleep manager output a third signal for causing the radio to draw power, for a duration responsive to the second amount of time received at the sleep manager input, at the first level below that which is used to receive at least one data packet, and at the end of the duration, providing at the sleep manager output a fourth signal for causing the radio to receive the at least one data packet.