Patent ID: 8200234

Claim:
A method for allocating a radio resource in a wireless sensor network, the method comprising: receiving a signal requesting a radio resource allocation from at least one sensor included in the wireless sensor network; comparing, first, an amount of remaining energy with respect to each zone where a sensor transmitting the signal is included; comparing, second, an amount of remaining energy with respect to each sensor included in the same zone, when sensors which transmit the signal requesting the radio resource allocation are included in the same zone; determining, first, an order of zones, from a zone comprising a greatest amount of remaining energy to a zone comprising a least amount of remaining energy, as a result of the first comparison; determining, second, an order of sensors from a sensor comprising a greatest amount of remaining energy to a sensor comprising a least amount of remaining energy, as a result of the second comparison when sensors which transmit the signal requesting the radio resource allocation are included in the same zone; and allocating a time slot to a sensor of each zone according to the determined order of zones, when transmitting a frame for the radio resource allocation.