Apparatus and method for merit based cognitive radio frequency resource allocation
A frequency resource allocation system and method for a wireless network that comprises one or more unlicensed cognitive devices that operate using white spaces in a TV frequency spectrum and one or more licensed incumbent devices that are associated with an incumbent service that uses the TV frequency spectrum stores one or more frequency resource databases that store one or more frequency band lists. A frequency band list comprises one or more frequency bands within the TV frequency spectrum. Merit-related information specific to a location associated with the wireless network are collected to choose a specified frequency based on the merit-related information. The specified frequency band can be chosen based on a merit class derived from transforming the merit-related information into different merit classes, with each merit class being associated with one or more frequency bands. A resource user device is then notified to operate in the specified frequency band.
1. A frequency resource allocation system for a wireless network that comprises one or more unlicensed cognitive devices that operate using white spaces in a TV frequency spectrum and one or more licensed incumbent devices that are associated with an incumbent service that uses the TV frequency spectrum, comprising:
one or more resource user devices comprising the one or more unlicensed cognitive devices;
one or more frequency resource databases that store one or more frequency band lists, each frequency band list comprising one or more frequency bands within the TV frequency spectrum;
a merit generator that:
collects merit-related information specific to a location associated with the wireless network, a specified frequency band being chosen based on the merit-related information,
transforms the merit-related information into different merit classes, each merit class associated with one or more frequency bands, and
determines a quality measure associated with a frequency band by combining the different merit classes using a fusion method comprising at least one of Dynamic Classifier Selection (DSC), Classifier Structuring and Grouping (CSG) and Hierarchical Mixture of Experts (HME) methods, a higher quality measure indicating an unlicensed cognitive device operating in the frequency band generates less interference to the incumbent service than another frequency band associated with a lower quality measure; and
a resource allocator that notifies a resource user device to operate in the specified frequency band.
2. The frequency resource allocation system of claim 1 , wherein each merit class is associated with the one or more frequency bands to generate a merit based frequency band list that is stored in a frequency resource database.
3. The frequency resource allocation system of claim 1 , wherein a merit value is associated with a merit class within an upper bound and a lower bound and wherein the merit value is represented by a soft value between the lower and upper bounds.
4. The frequency resource allocation system of claim 3 , wherein at least one merit value is associated with a weighting factor.
5. The frequency resource allocation system of claim 4 , wherein weighted merit values corresponding to the different merit classes are added together to yield a quality measure.
6. A frequency resource allocation method for a wireless network that comprises one or more unlicensed cognitive devices that operate using white spaces in a TV frequency spectrum and one or more licensed incumbent devices that are associated with an incumbent service that uses the TV frequency spectrum, comprising:
storing one or more frequency resource databases that store one or more frequency band lists, wherein a frequency band list comprises one or more frequency bands within the TV frequency spectrum;
collecting merit-related information specific to a location associated with the wireless network;
transforming the merit-related information into different merit classes, each merit class associated with one or more frequency bands:
determining a quality measure associated with a frequency band by combining the different merit classes using a fusion method comprising at least one of Dynamic Classifier Selection (DSC), Classifier Structuring and Grouping (CSG) and Hierarchical Mixture of Experts (HME), a higher quality measure indicating that an unlicensed cognitive device operating in the frequency band generates less interference to the incumbent service than another frequency band associated with a lower quality measure;
choosing a specified frequency based on the merit-related information; and
notifying a resource user device to operate in the specified frequency band.
7. The frequency resource allocation method of claim 6 , wherein each merit class is associated with the one or more frequency bands to generate a merit based frequency band list that is stored in a frequency resource database.
8. The frequency resource allocation method of claim 6 , further comprising associating a merit value with a merit class within an upper bound and a lower bound, wherein the merit value is represented by a soft value between the lower and upper bounds.
9. The frequency resource allocation method of claim 8 , wherein merit value associated with a merit classes is associated with a weighting factor.
10. The frequency resource allocation method of claim 9 , wherein merit values are associated with different merit classes based on corresponding weighting factors, and wherein the weighted merit values of the different the merit classes values are added together to yield a quality measure.