Self-configurable wireless systems: spectrum monitoring in a layered configuration
US6615040B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1999 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Sep 22, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system are disclosed for coordinating RF use in primary and adjunct wireless systems which are overlapped or layered in a common geographic area and which share the same the same RF spectrum. The adjunct system includes adjunct base stations defining respective adjunct wireless cells and serving adjunct mobile stations located within the respective adjunct cell. The primary system includes primary base stations defining respective primary wireless cells and serving primary mobile stations located within the primary wireless cell. The adjunct base stations monitor all RF channels and partition them into two sets, a set of channels likely to be interference-free and a set of noisy channels. Once control channels have been assigned to the base stations, the adjunct mobile stations may also participate in the monitoring step by employing the MAHO/MACA features of the IS 136 or GSM Air Interface Standard. The adjunct system forms a pool of interference-free channels for use by all adjunct base stations and mobiles. Channels are assigned to the adjunct base stations from the interference-free set. The interference-free channels left unassigned serve as back-up channels for p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.