Multipoint communication system having polling and reservation schemes
US4742512A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1986 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Jul 18, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a multipoint communication system, first polling signals are sequentially and respectively transmitted to terminal stations on a broadcast channel from a central station, asking a request for reservation without waiting for a reply from the terminal stations. A reservation signal is transmitted on a multiple access channel from a terminal station requesting the reservation to the central station in response to the first polling signal addressed to it. A second polling signal is then transmitted on the broadcast channel in response to the reservation signal and the multiple access channel is reserved for a period of time variable in accordance with the reservation signal. A data signal is transmitted from the terminal station requesting the reservation on the reserved multiple access channel in response to the second polling signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.