Cooperative Caching in Wireless P2P Networks: Design, Implementation, and Evaluation

—Some recent studies have shown that cooperative cache can improve the system performance in wireless P2P networks such as ad hoc networks and mesh networks. However, all these studies are at a very high level, leaving many design and implementation issues unanswered. In this paper, we present our design and implementation of cooperative cache in wireless P2P networks, and propose solutions to find the best place to cache the data. We propose a novel asymmetric cooperative cache approach, where the data requests are transmitted to the cache layer on every node, but the data replies are only transmitted to the cache layer at the intermediate nodes that need to cache the data. This solution not only reduces the overhead of copying data between the user space and the kernel space, it also allows data pipelines to reduce the end-to-end delay. We also study the effects of different MAC layers, such as 802.11-based ad hoc networks and multi-interface-multichannel-based mesh networks, on th...

• Type: Journal
• Year: 2010
• Where: TPDS
• Authors: Jing Zhao, Ping Zhang, Guohong Cao, Chita R. Das
• Keywords: Ad Hoc Networks, Cooperative Cache, TPDS 2010, Wireless P2p Networks