The Radio That Can Hear Over Itself: Self-interference cancellation allows radios to transmit and receive on the same frequency

Wireless isn't actually ubiquitous. We've all seen the effects: Calls are dropped and Web pages sometimes take forever to load. One of the most fundamental reasons why such holes in our coverage occur is that wireless networks today are overwhelmingly configured as star networks, This means there's a centrally located piece of infrastructure, such as a cell tower or a router, that communicates with all of the mobile devices around it in a starburst pattern.