Robust SATCOM Protocols
Defence Research Agency, DRA Defford
Jan 1993 - Dec 1994
A two year research project to investigate the design decisions in the construction
of a robust gateway to connect both LANs operating TCP/IP and WANs operating
X.25 over a SATCOM link. The project has resulted in an experimental system,
known as the "enhancer" that is being used in the trials programme
of DRA Defford. The figure below illustrates the use of the enhancer within
an X.25 network.
The project sponsored four postgraduate students, who collaborated to
study various aspects of the system. The trials were conducted in co-operation
with a team of researchers at DRA Defford and DRA Malvern. A series of detailed
reports have been published on the design and performance of the experimental
protocol enhancers. The important conclusions are summarised below:
- Standard protocols perform very poorly under many operational conditions.
- Efficient enhanced packet protocols have been developed which significantly
improve the link performance.
- The protocols may be made robust to the effect of noise.
- The bearer service (modem) may also be optimised to support the packet
mode.
More information is available from DRA, or from Dr
G Fairhurst at the University of Aberdeen.
Personnel
Researchers working on this project are:
[List of Projects in ERG]