Abstract: A crosslayer routing operation in a network of cognitive radios retrieves routing input parameters from a crosslayer interface, creates additional parameters from retrieved parameters, processes retrieved and additional parameters using a knowledge mapping and reasoning engine, utilizes numeric or linguistic results for targeted routing operations, updates a routing knowledge database; and sends relevant routing information to a route controller.

Abstract: Systems and methods are disclosed for the operation of a network of cognitive radios in a dynamic network topology. The systems and methods make use cross-layer communications to input parameters required by network services into a reasoning engine, which in turns processes the parameter the parameter information and reports linguistic results to the network services. The cross-layer communications are leveraged to shift network service functionality to the MAC or PHY Layers. Route discovery functionality is shifted from routing services down to the MAC or PHY Layers. The route discovery functionality is implemented by a process to elect a relay node based on the number of available channels that each of the source node neighbors has available to communicate with other neighbors.

Abstract: Systems and methods of the present invention enable the provisioning of QoS over a true multichannel mobile ad hoc network. The QoS framework of the present invention optimizes QoS performance across many channels simultaneously by treating the many channels like a single channel for purposes of QoS optimization. Aspects of the invention that allow the true multichannel provisioning of QoS include use of the physical layer to select available channels, firm state QoS functionality, hybrid signaling, dynamic associative multi-spectral queuing, and cross-layer communication of node information for use by QoS service.

Abstract: A ‘smart’ sub-channel hopping control mechanism executes one or more sub-channel selection discriminators to enable the communications controller of a spectral reuse transceiver to delineate on which of a plurality sub-channels the spectral reuse transceiver may transmit, so as to substantially reduce the likelihood of triggering squelch circuits of silent radios of primary (licensed) channel users.

Abstract: An operational mechanism enables extending the range of cognitive networks through the use of repeater transceivers and selective routing.

Abstract: A spectral reuse transceiver-based communication system conducts communications between a master site and a plurality of remote sites using a selected portion of a communication bandwidth containing a plurality of sub-bandwidth channels. Each remote site transceiver monitors the communication bandwidth for activity on the sub-bandwidth channels, and informs a master site transceiver which sub-bandwidth communication channels are absent communication activity and therefore constitute clear channels. The master site transceiver compiles an aggregate list of clear channels from all the remote sites and then broadcasts the aggregate list to the remote sites. The master site and a remote site then conduct communications therebetween by frequency-hopping and/or orthogonal frequency multiplexing among the clear channels using an a priori known PN sequence.