Communication systems
US8140018B2 · kind B2 · utility
6Cited by
3References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2008 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Jun 12, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/541
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless communication system is comprised of multiple radio access networks—RANs—which at least partly share the same frequency spectrum. Each RAN is provided with a gateway—GW—(GW1, GW2, GW3) for managing the network. Spectrum sharing in the system is achieved through a hierarchy of processes including long-term—LT—spectrum assignment, short-term—ST—spectrum assignment, and dynamic channel allocation, the latter process assigning sub-channels to base stations (BS1, . . . BS5; BS6, . . . BS10; BS11, . . . BS16) in each RAN. However, so-called “red” sub-channels (subject to interference) are liable to arise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.