Patent ID: 7979076

Claim:
A method of renting resources in a Cognitive Radio (CR) wireless communication system, comprising the steps of: receiving, by a renter Base Station (BS), a resource advertisement message broadcast from a plurality of neighbor BSs; requesting, by the renter BS, allocation of uplink radio resources to an offer BS being one among the neighbor BSs when a specific channel is not between the offer BS and the renter BS; transmitting, by the renter BS, a resource renting request message through the uplink radio resources to the offer BS based on information of candidate resources unused for the neighbor BSs included in the resource advertisement message; and receiving, by the renter BS, a response message for the resource renting request message from the offer BS and renting the candidate resources from the offer BS, wherein the candidate resources are remaining resources from servicing the neighbor BSs, the resource renting request message includes information about resources to be rented, which resources are selected based on the information of the candidate resources and information about a resource rental period, the selected resources are rented, by the renter BS, from the offer BS during the resource rental period, the allocation of uplink radio resources is content-based, and the resource advertisement message is broadcast in the System Information field of an OFDMA (Orthogonal Frequency Division Multiplexing Access) frame.