Combining uplink CCA and downlink CCA in LTE®-U

摘要

The methods, systems, and devices are described contention-based channel access procedures that may improve communication efficiency using unlicensed spectrum. A time period during which a base station performs a contention-based downlink channel access procedure for accessing a channel in the unlicensed spectrum may be identified. The base station may be adjusted so that various base stations can seek channel access during different time intervals each during this time period. The contention based uplink channel access procedure for the UE may then be modified to favor one or more UEs associated with the base station that has won the channel access right. [Selection] Figure 5