listen-before-talk mobile subframe in unlicensed band

摘要

The present invention relates to wireless cellular systems, machine readable media, methods and devices that implement a listen-before-talk (lbt) access scheme for a device that operates according to a cellular wireless protocol in an unlicensed channel. A cellular wireless device may use the cellular wireless protocol on the unlicensed channel after the lbt access scheme has determined that a channel (a defined frequency range) on the unlicensed channel is inactive for a specified period of time.