Upstream data transmission system with downloadable transmission parameters
US5570347A · kind A · utility
20Cited by
7References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1995 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Feb 7, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6168
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Each of a plurality of terminals in a two-way communications system includes a series of counters establishing a plurality of time slots synchronized to a downstream reference parameter. Upstream transmissions are effected by each terminal in one or more of the time slots which are defined by a downloaded message as comprising either a reserved slot or a contention slot. The downloaded message, which may also establish terminal transmission power levels and retransmission backoff algorithms for contention time slots, is derived on the basis of the population of subscriber terminals and the usage of the upstream channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.