Patent ID: 8451751
Filing Date: 2013-05-28
Classification: H04W

Abstract:
1. A source assisted channel management method in a distributed spectrum cognitive radio wireless network having a plurality of communicating devices forming a group, the method comprising: configuring at least one source device of multimedia stream data using a current channel to track traffic schedule of said data; proactively scanning for back-up channels which could be used in lieu of the current channel; identifying certain communicating devices in the network which should vacate a current channel when any one device from the group of communicating devices detects an incumbent, and make a determination as to when the wireless network should vacate the current channel based on said traffic schedule; and, wherein within the plurality of communicating devices, one device is configured to act as a controller for all remaining of the plurality of communicating devices; wherein said one device is further configured to be aware of transmission, reception and sensing times of all the devices in the plurality of communicating devices; wherein said one device is additionally configured to request devices within the group of devices to visit other channels when not busy to know any channel activity and to proactively select back up channels for the group of devices.