ADVANCED TECHNOLOGY FRAME STRUCTURE WITH BACKWARD COMPATIBILITY

摘要

An advanced technology frame structure is described herein. The advanced technology frame structure can enhance a first technology frame structure in dimensions of time, frequency, or a combination of time and frequency. A second technology frame structure time division multiplexes second technology subframes with the first technology downlink and uplink subframes. The first technology downlink subframe can be divided into a first technology downlink subframe and one or more second technology downlink subframes. Similarly, the first technology uplink subframe can be divided into a first uplink subframe and one or more second technology uplink subframes. These principles can be expanded upon and can be applied in many communication systems.

主权项

1. A method of orthogonal frequency division multiple access (OFDMA) communication, the method comprising:
transmitting, from a base station, a first downlink subframe in a first downlink frequency band according to a first technology format, the first downlink subframe beginning at a first time and ending at a second time, the first downlink subframe comprising a preamble for synchronization, a downlink allocation table (DL-MAP) associated with the first downlink subframe, and an uplink allocation table (UL-MAP); transmitting, from the base station, at least one second downlink subframe in a second downlink frequency band according to a second technology format, the at least one second downlink subframe beginning after the second time and ending at a third time; transmitting, from a first client station, a first uplink subframe in a first uplink frequency band according to the first technology format, the first uplink subframe beginning after the third time and ending at a fourth time; transmitting, from a second client station, at least one second uplink subframe in a second uplink frequency band according to the second technology format, the at least one second uplink subframe beginning after the fourth time and ending at a fifth time.