CableLabs is developing Dual Channel Wi-Fi technology to address congestion by providing one or more channels for downstream-only data in addition to a primary bi-directional channel.
In a blog posting, Luther Smith, Director, Wireless Technology at CableLabs, describes how a primary channel could be used for upstream and small downstream packets and the others channel(s) are used for large downstream and time-critical data, like video.
https://www.cablelabs.com/a-better-wi-fi-experience-with-dual-channel-wi-fi
