Antenna diversity for wireless communication system
US6085076A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1997 |
| Grant date | Jul 4, 2000 |
| Priority date | — |
| Expiry date | Apr 7, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0608
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A receiver and antenna selection system located at a base station preferably comprises a plurality of radio units, each connected to its own antenna. Each radio unit receives a radio message and independently derives quality metrics based on the reception quality of the radio message, as indicated, for example, by a received signal strength indication, cyclic redundancy check result, preamble correlation magnitude, and other factors. Each radio unit transfers the quality metrics as serial data to an antenna selector. The antenna selector, simultaneously for each radio unit, converts and formats the serial data into individual data words and/or bits corresponding to the quality metrics, then applies the data words and/or bits to an antenna scoring block for determining an antenna score for each antenna. A comparison block compares the antenna scores and selects the best antenna for reception and/or transmission. In a preferred embodiment, the antenna selector weights the importance of each of the received quality metrics, such that certain parameters influence the antenna selection more than other parameters. If no antenna is clearly superior, the antenna selector may rotate the ant…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.