Front end filter control for shared access system
US9198044B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 2014 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Mar 10, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The described examples are usable in an authorized shared access system to provide a front end sub-band filter system and method that securely allows the selection of a front end sub-band filter for receiving signals in a shared radio frequency spectrum (SRFS). A controller manages allocation of communication channels in the SRFS using an encrypted signal. The encrypted signal is only decrypted by a filter controller of a filter selection system. Based on the decrypted signal, the filter controller instructs a filter switch which band pass filters are to be incorporated into a front end communication path. The encrypted signal prevents unauthorized users from accessing a communication channel, and the selection of a specific sub-band filter prevents transmitter interference into other communications channels in other sub-bands, and prevents the reception of signals or interference from other communications channels in other sub-bands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.