Patent ID: 8913629
Filing Date: 2014-12-16
Classification: H04B

Abstract:
1. A method of managing coexistence of devices on a shared power line communications medium, the method comprising: determining a first signal detection window of a plurality of signal detection windows, the first signal detection window assigned to a first system category of a plurality of system categories, wherein the first signal detection window is a region of time that periodically occurs based on a given number of line cycles of the shared power line communications medium; transmitting, within a first field of the first signal detection window, a first signal with a first phase vector; transmitting, within a second field of the first signal detection window, a second signal with either the first phase vector or a second phase vector, monitoring the plurality of signal detection windows; and determining a first network status based on said monitoring the plurality of signal detection windows, wherein the first network status is that at least one device of a second system category of the plurality of system categories is within interference range if a signal is detected within a second signal detection window and that at least one device of a third system category of the plurality of system categories is within interference range if a signal is detected within a third signal detection window of the plurality of signal detection windows.