Data transmission installation of the radio network type, and corresponding method
US5689510A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1994 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Sep 26, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data transmission installation includes at least two data processing terminals (Pa, Pb), each equipped with a network interface (Ia, Ib) for transmitting messages on request, and collecting received messages, a transmission/reception management device (ARC) giving instructions confirming transmission or reception, a test unit for defining a recognized collision, and a unit for resolving collisions, following a recognized collision condition. Each of the data processing terminals includes a multi-directional radio transmission/reception device controlled in accordance with the confirming instructions for the transmission of messages to be exchanged. In response at least to the start of an instruction confirming transmission, the radio transmission/reception device operates in rapidly alternating transmission/reception, according to a pattern chosen in order to be peculiar to the data processing terminal. The test unit is configured to recognize a collision if a signal of a level greater than a first level threshold is received during a substantial part of at least one silence in the rapidly alternating transmission/reception.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.