Method and apparatus for frequency assignment of a base station
US5737705A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1995 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Feb 28, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for improved frequency assignment includes recording communications events (130), for example handoff statistics, for subscriber units handing to and away from a base station (931). The handoff statistics include the IDs of the other base stations (932-937) involved in the handoff, preferably along with the date and time of the handoff. The statistics of the handoff count are applied based on the number of occurrences within a time period (140), and are used to accept or reject the potential frequency assignments obtained from an assignment process. In one embodiment of this process, using a Q estimate, obtained from residual powers recorded on each frequency (430-435), a candidate frequency is chosen based on the lowest Q value (440). This candidate is tested against the handoff statistics, and if rejected, a frequency with the next lowest Q level is tested (450-470). This process is repeated until a frequency is assigned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.