Method and system for time synchronization of WiMAX and LTE-TDD networks

摘要

Embodiments of a method and system for supporting co-existence of first and second cellular networks in adjacent channels in the same geographical area are provided. The method and system synchronize the two cellular networks such that their respective uplink transmissions are aligned in time and their respective downlink transmissions are aligned in time. Such synchronization prevents (or substantially prevents) the uplink transmissions from one of the two cellular networks from overlapping with the downlink transmissions of the other cellular network, and vice versa, thereby mitigating interference between the two networks.

主权项

1. A method for supporting co-existence of first and second cellular networks in adjacent channels, the first cellular network communicating a first frame of data and the second cellular network communicating a second frame of data, the method comprising:
shifting communication of an uplink portion of the first frame relative to communication of the second frame by a first time to mitigate transmission of the uplink portion of the first frame during transmission of a downlink portion of the second frame; shifting communication of a downlink portion of the first frame relative to communication of the second frame by a second time to mitigate transmission of the downlink portion of the first frame during transmission of an uplink portion of the second frame; and preventing transmission of uplink sounding reference signals and random access during a special subframe in the first frame based on the special subframe overlapping in time with the downlink portion of the second frame.