Hierarchical collaboration caching in wireless Mesh networks
Peng Wang · Computer Engineering and Applications Journal · 2010
In wireless Mesh network,the caching data of nodes different from each other,and this difference may cause the low utilization rate of some nodes.Some nodes will do the replacement operations frequently because of their heavy caching traffic,and this imbalance utilization of node storage space will decrease the efficiency of caching.In this paper,a collaboration caching algorithm based on the hierarchy of nodes is proposed.In this algorithm,a distributed cache is constructed for every node in the network,and this distributed cache is used to replace the cache of the node itself.By the reasonable using of storage space of each node,the data caching ability of single node is increased.Simulation results and theoretical analysis indicate that the proposed algorithm improves the data access hit ratio effectively.At the same time,it decreases the replacement operations of data in cache and depress the energy consumption of nodes.