Multiple user spread-spectrum communication system
US5210771A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Aug 1, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication system having a site employing a plurality of communication channels. Each channel is assigned a desired received signal strength threshold. A channel is assigned to a subscriber unit based upon the strength of the signal received at the site and the power control range of the subscriber unit. The selection of a channel may be performed either by the site or the subscriber unit. In an FDMA environment, each separate frequency division channel may be assigned different received signal strength thresholds. In a non-overlapping time interval (TDMA) environment, each separate time division channel may be assigned different received signal strength thresholds. In another embodiment, a combination of FDMA and TDMA environments can be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.