Method and system for spectrum management
View Patent ↗A method and apparatus for defining spectral usage at a base station in a wireless network. In various embodiments, the wireless network is divided into a plurality of regions, such that each of the regions may have associated with it one or more interfering adjacent regions, which are associated with different portions of a spectral allocation.
1. A method for defining spectral usage at a base station in a wireless network, the wireless network being divided into a plurality of regions, wherein each of the regions may have associated with it one or more interfering adjacent regions, wherein interfering adjacent regions are associated with different portions of a spectral allocation, said method comprising:
determining, at said base station, the spectral allocation associated with the region including said base station;
selecting for use an initial portion of a plurality of channels within the determined spectral allocation sufficient to meet a minimum demand level;
obtaining one or more interference factors associated with the region; and
determining a respective interference model associated with the corresponding region in response to the obtaining step.
2. The method of claim 1 , further comprising:
in response to a determination that the region including said base station includes another base station, selecting for use an allocation of a remaining portion of said plurality of channels within the determined spectral allocation.
3. The method of claim 2 , wherein said allocation of said remaining portion of said plurality of channels is selected using a utility function.
4. The method of claim 1 , further comprising:
adapting said selection of channels in response to change in interference associated with interfering adjacent region.
5. The method of claim 1 , wherein each of said regions comprises a hexagon having a side-length of one unit and is deemed to be an interfering adjacent region to any other region within a two unit distance.
6. The method of claim 5 , wherein said interference relationships between base stations comprise pairwise interference (PW) model and physical interference (PH) model.
7. The method of claim 1 , wherein each portion of said spectral allocation comprises 1/Nth of said spectral allocation, where N is selected to provide a number of spectral allocation portions sufficient to associate interfering adjacent regions with different spectral allocation portions.
8. The method of claim 1 , wherein said interference changes comprise one or more of a region deletion, a region addition, a base station deletion, a base station addition, signal strength changes, or environmental condition changes.
9. A non-transitory computer readable medium for storing computer instructions which, when processed by a computer, adapt the operation of the computer to perform a method for defining spectral usage at a base station in a wireless network, the wireless network being divided into a plurality of regions, wherein each of the regions may have associated with it one or more interfering adjacent regions, wherein interfering adjacent regions are associated with different portions of a spectral allocation, said method comprising:
determining, at said base station, the spectral allocation associated with the region including said base station;
selecting for use an initial portion of a plurality of channels within the determined spectral allocation sufficient to meet a minimum demand level;
obtaining one or more interference factors associated with the region; and
determining a respective interference model associated with the corresponding region in response to the obtaining step.
10. The non-transitory computer readable medium of claim 9 , further comprising:
in response to a determination that the region including said base station includes another base station, selecting for use an allocation of a remaining portion of said plurality of channels within the determine spectral allocation.
11. The non-transitory computer readable medium of claim 9 , wherein said initial portion of said plurality of channels is selected to meet a minimum demand level, and said allocation of said remaining portion of said plurality of channels is selected using a utility function.
12. The non-transitory computer readable medium of claim 9 , wherein each of said regions comprises a hexagon having a side-length of one unit and is deemed to be an interfering adjacent region to any other region within a two unit distance.
13. The non-transitory computer readable medium of claim 12 , wherein said interference relationships between base stations comprise pairwise interference (PW) model and physical interference (PH) model.
14. The non-transitory computer readable medium of claim 9 , wherein each portion of said spectral allocation comprises 1/Nth of said spectral allocation, where N is selected to provide a number of spectral allocation portions sufficient to associate interfering adjacent regions with different spectral allocation portions.
15. The non-transitory computer readable medium of claim 9 , wherein said interference changes comprise one or more of a base station deletion, a base station addition, signal strength changes, or environmental condition changes.
16. A computer system for defining spectral usage at a base station in a wireless network, the wireless network being divided into a plurality of regions, wherein each of the regions may have associated with it one or more interfering adjacent regions, wherein interfering adjacent regions are associated with different portions of a spectral allocation, said computer system comprising:
a controller adapted to:
(a) determine the spectral allocation associated with the region including said base station;
(b) select for use an initial portion of a plurality of channels within the determined spectral allocation sufficient to meet a minimum demand level;
(c) obtain one or more interference factors associated with the region; and
(d) determine a respective interference model associated with the corresponding region in response to (c).
17. The computer system of claim 16 , further comprising:
in response to a determination that the region including said base station includes another base station, selecting for use an allocation of a remaining portion of said plurality of channels within the determine spectral allocation.
18. The computer system of claim 16 , wherein said initial portion of said plurality of channels is selected to meet a minimum demand level, and said allocation of said remaining portion of said plurality of channels is selected using a utility function.
19. The computer system of claim 16 , wherein each of said regions comprises a hexagon having a side-length of one unit and is deemed to be an interfering adjacent region to any other region within a two unit distance.
20. The computer system of claim 19 , wherein interference relationships between base stations comprise pairwise interference (PW) model and physical interference (PH) model.
21. The computer system of claim 16 , wherein each portion of said spectral allocation comprises 1/Nth of said spectral allocation, where N is selected to provide a number of spectral allocation portions sufficient to associate interfering adjacent regions with different spectral allocation portions.
22. The computer system of claim 16 , wherein interference changes comprise one or more of a base station deletion, a base station addition, signal strength changes, or environmental condition changes.