Patent ID: 8743717

Claim:
A method of allocating clusters, each of the clusters comprising a plurality of subcarriers, by a base station which communicates with a plurality of subscriber stations using multiple access technology in a cell, the method comprising: receiving signal to interference noise information regarding at least one cluster from a first subscriber station; analyzing a variation of the signal to interference noise information regarding the at least one cluster received from the first subscriber station; allocating to the first subscriber station a diversity cluster based on the variation of the received signal to interference noise information analyzed from the first subscriber station to be used for a first data transmission to the first subscriber station by providing a first cluster identification, the diversity cluster allocated to the first subscriber station including a plurality of disjoint subcarriers; receiving signal to interference noise information regarding at least one cluster from a second subscriber station; analyzing a variation of the signal to interference noise information regarding the at least one cluster received from the second subscriber station; and allocating to the second subscriber station a coherence cluster based on the variation of the received signal to interference noise information analyzed from the second subscriber station to be used for a second data transmission to the second subscriber station by providing a second cluster identification, the second data transmission to occur simultaneously with the first data transmission to the first subscriber station using the allocated diversity cluster, the coherence cluster allocated to the second subscriber station including only consecutive subcarriers.