Systems and method for use in a dual mode satellite communications system
US6198730A · kind A · utility
191Cited by
8References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1998 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Oct 13, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communications network is capable of using time division multiple access (TDMA) techniques, code division multiple access (CDMA) techniques, or a combination of both. A subscriber unit (30) makes a request for a traffic channel over a CDMA pilot channel or a TDMA broadcast channel. A satellite (20) or a base station (40) receives the request and determines whether to assign a TDMA or CDMA traffic channel. The downlink and uplink can have the same access scheme (e.g., TDMA) or different access schemes (e.g., TDMA on the uplink and CDMA on the downlink).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.