Patent ID: 7969859
Filing Date: 2011-06-28
Classification: H04W

Abstract:
1. A method of reallocating sub-carriers for communication with a base station in an orthogonal frequency division multiplexing network, wherein a set of downlink sub-carriers are allocated for the base station to transmit signals to a plurality of subscriber stations and a set of uplink sub-carriers are allocated for the base station to receive signals from the plurality of subscriber stations, the method comprising: assigning the sub-carriers for the base station to one of a set of guard sub-carriers and a set of communication sub-carriers, the communication sub-carriers comprising the set of downlink sub-carriers and the set of uplink sub-carriers; monitoring, by the base station, network conditions; and reallocating sub-carriers from one of the set of downlink sub-carriers and the set of uplink sub-carriers to the other of the set of downlink sub-carriers and the set of uplink sub-carriers based on the network conditions.