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Caching is an energy-efficient method to improve service availability with low cost, and the combination of centralized processing and distributed caching in cloud radio access networks (C-RANs) can reduce redundant traffic. In this paper, a cluster content caching scheme in C-RANs is proposed, which can maintain a balance between the storage volume and the hit ratio of caching, and mitigates the...
The performance of wide area network (WAN) has a direct impact on user experience of cloud usage. In order to provide on-demand and performance-assured WAN connections, we design and implement a SDN-based system called Grace, which abstracts the underlying network resources into life-cycle network services to provide the predefined network performance via open APIs. With the advantages of this system,...
In disruption tolerant networks, gossip is an efficient routing scheme, which significantly reduces the message delivery overhead while maintaining a relatively high delivery rate. This mechanism needs network nodes to forward messages and data according to the system-defined gossip probability in a selfless and cooperative way. In this paper, we investigate how node selfishness influences the performance...
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