CGR-SPI: A New Enhanced Contact Graph Routing for Multi-source Data Communication in Deep Space Network
| Autor: | Sangita Dhara, Chakshu Goel, Sujoy Ghose, Raja Datta |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Routing protocol
business.industry Computer science 020206 networking & telecommunications Throughput 02 engineering and technology NASA Deep Space Network 01 natural sciences law.invention Relay law 0103 physical sciences Path (graph theory) Node (computer science) Computer Science::Networking and Internet Architecture 0202 electrical engineering electronic engineering information engineering Bandwidth (computing) Routing (electronic design automation) business 010303 astronomy & astrophysics Computer network |
| Zdroj: | 2019 IEEE International Conference on Space Mission Challenges for Information Technology (SMC-IT). |
| DOI: | 10.1109/smc-it.2019.00009 |
| Popis: | The future deep space network will have more number of orbiters, landers, rovers and relay nodes than it has today. Consequently, the communication between the nodes will no longer be time specific or bandwidth specific and therefore, the data generated at different planetary regions might be forwarded using common interplanetary links and intermediate relay nodes. The Contact Graph Routing (CGR) chooses a single path between a source and a destination node to achieve the best delivery time of a bundle. In this paper, we first evaluate, through emulation, the performance of CGR where multiple sources in deep space generate data (bundles) which are transmitted to earth in several hops while competing for the limited bandwidth of interplanetary links. Due to the Earliest Delivery Time (EDT) used in CGR, it is possible that data might get chocked because of long queues encountered in intermediate nodes. Sharing the partial queue-length information among nearby nodes, we propose an improved routing scheme for forwarding bundles in deep space network. Simulation studies show that this modification of CGR significantly improves the throughput by efficiently exploiting the deep space network's available bandwidth. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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