Communication system
US4862453A · kind A · utility
120Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1987 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Oct 2, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a dynamic frame length slotted ALOHA system the synchronizing signals are transmitted by a base station at different frequencies (each having a period equivalent to a multiple of the time slot period). The different frequencies denote different frame lengths and the central stations detect these frequencies and select a frame length accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.