Patent ID: 8189626
Filing Date: 2012-05-29
Classification: H04B,H04J,H04W

Abstract:
1. A method for transmission synchronization in a wireless access system having a controller and a plurality of base stations, the method comprising: generating, by the controller, a data payload frame from a data payload; assigning, by the controller, a frame number to the data payload frame, wherein the frame number comprises a generating time of the data payload frame and an offset, wherein the offset spans a transfer time of a data payload frame from the controller to the plurality of base stations, wherein a first part of the offset spans a transfer time of the data payload frame from the controller to a gateway, and wherein a second part of the offset spans a transfer time of the data payload frame from the gateway to one of the plurality of base stations; and distributing, by the controller via the gateway, the data payload frame with the frame number to the plurality of base stations in the wireless access system; wherein, for each base station of the plurality of base stations, a saved second part of the offset is replaced with a measured second part of the offset when the measured second part of the offset is greater than the saved second part of the offset; and wherein the offset is computed from the first part of the offset and the saved second part of the offset.