Leveraging Routing Performance and Congestion Avoidance in Predictable Delay Tolerant Networks

被引:0
|
作者
Fraire, Juan A. [1 ]
Madoery, Pablo [1 ]
Finochietto, Jorge M. [1 ]
机构
[1] Univ Nacl Cordoba, Digital Commun Res Lab, RA-5000 Cordoba, Argentina
关键词
Delay Tolerant Networks; Contact Graph Routing; Merugu's Floyd Warshall; Congestion Avoidance;
D O I
暂无
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
Delay or Disruption Tolerant Network (DTN) architecture has become a promising solution for challenged environments where communications cannot be assumed persistent. In particular, if node dynamics can be predicted like in space-borne networks, routing schemes such as Merugu's Floyd Warshsall (MFW) and Contact Graph Routing (CGR) can take advantage of the a priori knowledge of the DTN topology. In this work we compare and leverage these popular schemes and propose Cache-CGR: a computationally efficient version of CGR that reduce processing requirements while preserving its features such as local congestion avoidance. We demonstrate the performance gain of C-CGR both by means of simulation and an on-board computer test-bench with Interplanetary Overlay Network (ION) DTN implementation. Finally, we discuss CGR open issues and lay the foundations for future research on DTN global congestion avoidance mechanisms.
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页数:7
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