"The internal wireless protocol that allows the controller to communicate with the console has been overhauled from the 360 era, replacing a 1.6 megabit per second connection of the old one with a modified WiFi protocol for the new one that enables 20 times the bandwidth which, in turn, Alam said, "allows a whole different variety of different accessories we can build with the controller and around the controller."P
The new proprietary protocol—to be clear, it's not WiFi nor Bluetooth, which Alam said was too slow for their needs—should reduce controller-to-console latency by 20% compared to the old 360 connection. How fast? Alam says that the time from button press on an Xbox One controller to the console receiving the signal should be 9 milliseconds. He believes that is effectively the same as with a wired controller, though he noted that the controllers radio transmitter will be turned off if/when the controller is plugged into the console via a micro-USB cable, allowing signals to be sent strictly through the wire. That, he said, is ideal for competitive play and removes the need for competitive gamers to own a wireless and wired controller."