Method and apparatus for reducing interference in non-stationary subscriber radio units using flexible beam selection
US6701165B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2000 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Jul 19, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are disclosed for beam selection in a non-stationary subscriber radio unit having a multi-beam antenna array. The disclosed multi-beam antenna array acts in an omni-directional manner whenever signal-to-noise ratio (SNR) performance is sufficient, and excludes individual branches, as necessary, on the basis of SNR performance. A multi-mode approach is used to select appropriate antennas in the multi-beam antenna array. A given mode is established on the basis of the SNR of the received signal. Generally, if the SNR of the received signal satisfies predefined criteria, the non-stationary subscriber radio unit will operate the multi-beam antenna array in an omni-directional-like manner, by equally combining the received signal from each individual narrow-beam antenna branch. If the SNR of the received signal fails to satisfy the predefined criteria, the non-stationary subscriber radio unit will operate the multi-beam antenna array in a flex-beam manner that excludes those branches that have exhibited degraded SNR performance. A branch ordering table lists the branches in the multi-beam antenna array in order of their SNR performance. A flex_counter indicates th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.