Method for multi-band communication routing within a wireless communication system

1. A method of operation of a node for multi-band communication routing within a wireless communication system, the method comprising:

communicating a communication session on a default route within an identified quality of service objective on a first frequency band;

broadcasting, on a second frequency band, one or more route discovery messages at each of a plurality of sets of transmission variables;

storing one or more alternate route table entries in a route table, wherein each of the one or more alternate route table entries are indexed by each of the plurality of sets of transmission variables that are at least within the quality of service objective;

selecting a stored alternate route that is at least within the quality of service objective of the communication session on the second frequency band; and

switching the communication session to operate using the transmission variables related to the selected alternate route.

2. A method for multi-band communication routing as claimed in claim 1 , further comprising prior to communicating on the default route: performing a route discovery procedure with prioritized quality of service objectives on a first frequency band to select the default route.

3. A method for multi-band communication routing as claimed in claim 2 , wherein the default route is selected using a highest frequency band and a lowest power to enable the communication session to meet its quality of service objectives in terms of data rate and latency.

4. A method for multi-band communication routing as claimed in claim 1 , further comprising prior to the broadcasting step:

switching a route discovery transceiver to a second frequency band.

5. A method for multi-band communication routing as claimed in claim 1 , wherein the one or more alternate route table entries indexed by each of the plurality of sets of transmission variables are at least within the quality of service objective with a safety margin.

6. A method for multi-band communication routing as claimed in claim 1 , wherein the wireless communication system comprises a mobile ad hoc cognitive network, and further wherein the node comprises a cognitive radio.

7. A method for multi-band communication routing as claimed in claim 1 , further comprising prior to the broadcasting step:

triggering a switch from the first frequency band to the second frequency band by a condition comprising one or more of a poor channel condition, an interference, a congestion, and a requirement to segregate certain traffic types onto a separate frequency band.

8. A method for multi-band communication routing as claimed in claim 1 , further comprising:

mapping the default route to a next node in the first frequency band to one or more alternate routes using one or more alternate frequency bands; and

storing the mapping in the route table.

9. A method for multi-band communication routing as claimed in claim 1 , wherein each of the sets of transmission variables comprise one or more of a modulation type, a coding rate, a spreading factor, and a transmit power.

10. A method for multi-band communication routing as claimed in claim 1 , wherein the quality of service objectives comprises one or more of a data rate, a latency, a power utilization, and a cost.

11. A method for multi-band communication routing as claimed in claim 1 , wherein the storing of each alternate route table entry comprises:

creating a route table entry toward a destination that is indexed by a combination of a destination address and the transmission variables that enable the quality of service objectives to be met.