Method and apparatus for spectrum sharing between an incumbent communications system and a cognitive radio system
US7881726B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Jul 31, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W24/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Efficient frequency spectrum sharing between at least one incumbent communication system(s) (102, 152) and at least one cognitive radio (CR) system (105) is provided. The incumbent system's system parameters and CR system's operational requirements are copied to a mirrored database (106B). The mirrored database (106B) is controlled by a either a central authority (108) or a database manager having delegated authority (508). The mirrored database (106B) is accessed by the CR system (105). The mirrored database (106B) can be modified and updated by the central authority (108) or delegated database manager (508) to correct for interference detected in the incumbent system caused (152) by the cognitive radio system (105). The cognitive radio system (105) utilizes the updated mirrored database (106B) to avoid interfering with the incumbent system (102, 152) to determine CR system operating parameters thus enhancing the ability to share spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.