Patent ID: 8238301

Claim:
A system for supporting different modes of multiple access, comprising base stations and terminals, wherein a group of base stations are located at the same location, and within the same group there are at least two synchronized base stations operating on a same frequency band and one of two synchronized base stations supports a different mode of multiple access from the other in uplink or downlink, and wherein, the base stations in the same group are configured to send downlink signals in their respective downlink zone within a system downlink frame and receive uplink signals in their respective uplink zone within a system uplink frame, the uplink and downlink zones of different base stations are time divided and not overlapped with each other; each terminal is configured to access to one of the base stations according to the downlink multiple access technique that the terminal supports, receive signals in the downlink zone allocated to the base station, and send signals in the uplink zone allocated to the base station; wherein the group of base stations comprises a first base station and a second base station, the system downlink frame comprises a first downlink zone and a second downlink zone, the system uplink frame comprises a first uplink zone and a second uplink zone; and the first downlink zone is allocated to the first base station and the second downlink zone is allocated to the second base station for sending downlink signals; the first uplink zone is allocated to the first base station and the second uplink zone is allocated to the second base station for receiving uplink signals; and wherein the uplink multiple access technique that the first base station supports is different from those that the second base station supports.