PAGE CONTENTS
Objectives
The Internet TCP protocol, part of the TCP/IP suite, is one of the cornerstones of the Internet. However, TCP was not designed for optimising resource usage, and has inherent performance problems over many types of satellite links, in particular mobile links. In order to make efficient use of expensive satellite transponder resources, many satellite communication networks use various types of Dynamic Assignment Multiple Access (DAMA) protocols for allocating resources according to the instantaneous needs of the various data streams in the system. Such protocols are typically found in mobile satellite communication as well as in many VSAT systems. The purpose of the work is threefold:
To develop a new transport protocol for the satellite link, which makes it efficient to use satellites in internet-based networks or multimedia applications while maintaining compatibility with existing applications and networks.
To investigate methods for explicitly communicating resource requirements and availability between the application and the DAMA control. The preferred solution is one that operates completely within a standard protocol stack, with the exception that the application and the DAMA control need to be aware of each other, and explicitly communicate.- To include network security features into the architecture. The SaNTA architecture lends itself very well to providing network data security. The original scope of the development has therefore been extended to study this subject and include it into the prototype.
Challenges
Not Applicable.
Plan
The project was successfully completed in November 2005.
Current Status
Following extensive tests in a lab environment as well as over a satellite link, the project was successfully completed in November 2005.