Method of, and system for, transmitting messages
US6021311A · kind A · utility
14Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1997 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Nov 20, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/022
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A message transmission system includes at least one primary station arranged for making transmissions on a down-link and a plurality of secondary stations arranged for making transmissions on an up-link, each of the secondary stations having its own address which is transmitted as part of the down-link message. Each of the secondary stations is configured for generating responses to messages as pseudo-random data sequences, the pseudo-random data sequence being generated by a secondary station at any one time being dependent on at least the address assigned to the secondary station and/or information contained in the message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.