Patent ID: 7903619

Claim:
A method for transmitting and receiving data by a base station for communication with a wireless terminal using an OFDMA scheme, the method comprising the steps of: determining a data transmission period using the OFDMA scheme; determining a time interval for a forward link, a time interval for a reverse link and a switching time between the two time intervals in the data transmission period; allocating time slots for data transmission in the forward link, included in the time interval for the forward link, to wireless terminals located in local and remote areas of the base station in a decreasing order of distances of the wireless terminals from the base station; allocating time slots for data reception in the revere link, included in the time interval for the reverse link, to wireless terminals located in the local and remote areas in an increasing order of distances of the wireless terminals from the base station; and transmitting data in the time interval for the forward link and receiving data in the time interval for the reverse link.