LTE/LTE-A METHOD OF SYNCHRONIZATION WITHIN AN LTE/LTE-A SYSTEM IN UNLICENSED SPECTRUM

摘要

Methods, systems and devices for wireless communication are disclosed. One method includes receiving, at a first base station, at least one clear channel assessment (CCA) -exempt transmission indicative of timing information of at least a second base station over a shared spectrum. The timing of the first base station may be adjusted based on the received timing information of the second base station. Another method of wireless communication includes identifying a CCA slot assigned to a first base station for a frame that may be associated with time synchronization of a shared spectrum. The CCA may be performed in the CCA slot identified for the frame. If the CCA is successful, the first timing information of the first base station may be selectively transmitted during the frame. If the CCA is not successful, the second timing information of the second base station may be heard during the frame.