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Delay Performance of Network-Coding-Based Epidemic Routing
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DOI：10.1109/TVT.2015.2433263.png)
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摘要
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In this paper, we first challenge the accuracy of the so-called innovative assumption that is widely adopted in delay performance analysis of network-coding-based epidemic routing (NCER) in delay-tolerant networks (DTNs). We demonstrate that this optimistic assumption severely underestimates data delivery delay and solves this problem successfully by introducing an extra encounter factor delta. Based on this, we propose a coloring process (CP)-based analytical model to evaluate the delay performance of NCER. Numerical results show that our CP-based method outperforms traditional ordinary differential equation (ODE)-based methods on estimating the delay performance under different network sizes. Furthermore, to mitigate potential competition among multiple data streams from different nodes, we propose a feedback-based recovery protocol (FRP) that takes advantage of finite buffer space and significantly reduces the number of ineffective transmissions between nodes. As a result, FRP can achieve much better delay performance compared with existing protocols in prior work.
Keyword:
Delay performance modeling
delay-tolerant networks (DTNs)
epidemic routing (ER)
recovery protocol
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期刊
IF:
7.1
论文数:
1.8W
被引数:
6.6W
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