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QoS Based Congestion Control for Space Delay/Disruption Tolerant Networks |
SHI Wenfeng GAO Deyun ZHOU Huachun |
(School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China) |
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Abstract In order to alleviate the influence of network congestion in space delay/disruption tolerant networks, a QoS based congestion control algorithm is proposed in this paper. The algorithm consists of contact congestion forecasting scheme and QoS based data forwarding scheme. The contacts are divided into different congestion levels according to their residual available capacity and nodes’ storage resource. The congestion level of forwarding path calculated by routing is decided by the highest congestion level of contacts consisted in the path and different priority data will be forwarded according to the path congestion level. Experiment shows that QoS based algorithm could improve the transmission rate of data with lower priority and reduce the delivery delay of highest priority data when the node storage space is insufficient.
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Received: 29 January 2016
Published: 08 September 2016
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Fund: The National 863 Program of China (2015AA015702), The National Natural Science Foundation of China (61271202), The National 973 Program of China (2013CB329101) |
Corresponding Authors:
SHI Wenfeng
E-mail: 14111038@bjtu.edu.cn
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