Dynamically adapting a receive diversity mode of a base station
US8818290B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2012 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Feb 22, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0871
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The usage capacity of a base station operating in four-branch receive diversity mode is limited to a given number of channel resources, where each channel resource corresponds to an active user. In two-branch receive diversity mode, approximately twice as many channel resources are available, but the receiver sensitivity is less than with four-branch mode. Thus, four-branch mode provides better coverage but with less usage capacity. A base station is operated in four-branch mode to provide the best coverage while usage is low. When the number of users reaches a first threshold, prior to reaching the maximum number of users, the base station transitions to two-branch mode to accommodate an anticipated increase of users above the four-branch capacity, although with reduced coverage. When usage then falls below a second threshold, the base station transitions back to four-branch mode, again providing better coverage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.