Patent ID: 9591644
Date: 2017-03-07
CPC Classifications: H04W

Claim:
1. A method of wireless communication, comprising: generating, at a base station configured to transmit orthogonal frequency divisional multiple access (OFDMA) communication signals over at least an unlicensed spectrum, at least one of: one or more synchronization signals, or a system broadcast signal for transmission, wherein a subframe configuration is provided in the unlicensed spectrum including one or more clear channel assessment (CCA) subframes and one or more non-clear channel assessment (non-CCA) subframes; determining, by the base station, non-CCA subframe of the one or more non-CCA subframes in the unlicensed spectrum for transmission of the at least one of: the one or more synchronization signals, or the system broadcast signal; and transmitting, by the base station, the at least one of: the one or more synchronization signals, or the system broadcast signal in the non-CCA subframe.