Process, transmitter and receiver for data transmission with variable traffic volume and a control station for coordinating several such transmitters and receivers
US5373502A · kind A · utility
219Cited by
4References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Mar 25, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5672
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
During data transmission or transmission of redundancy-reduced signals, the traffic volume and, hence, the necessary transmission capacity are not constant. Instead of the prior art approach of more or less intensive use of the total capacity, the basic idea of the invention is coded transmission and simultaneous use of more or less many, mutually orthogonal codes. An embodiment shows the use of a mixed code-division multiplex (CDMA)-time division multiplex (TDMA) radio system. The number of channels assigned to a signal station (CDMA) is determined anew frame-by-frame (TDMA) in response to requests in preceding frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.