基于区域集中存储的CCN路由策略  

Routing strategy based on regional centralized caching in content-centric networking

作　　者：李兆玉[1] 陈翔 李朋明 朱红梅 LI Zhaoyu;CHEN Xiang;LI Pengming;ZHU Hongmei(Chongqing Key Lab of Mobile Communication Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,P.R.China)

机构地区：[1]重庆邮电大学移动通信技术重点实验室

出　　处：《重庆邮电大学学报（自然科学版）》2019年第6期805-811,共7页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：长江学者和创新团队发展计划(IRT_16R72)~~

摘　　要：针对在内容中心网络(content-centric networking,CCN)中如何结合缓存资源提高路由效率,优化网络性能的问题,提出一种轻量级的基于区域集中存储的路由策略(regional centralized storage routing strategy,RCSRS).提出区域集中存储思想,以节点度中心性、紧密中心性、介数中心性和凝聚度为指标,选取区域中心度最高的节点作为核心节点集中缓存内容资源,剩余普通节点仅负责路由转发;并设计基于集中存储的路由机制,路由时快速引导兴趣包至区域核心节点以查找内容.仿真结果表明,与传统路由策略相比,该方案在较低网络开销下,平均命中率、平均请求时延和平均跳数减少率方面有明显提升.Aiming at the problem of how to combine the cache resources to improve the routing efficiency and optimize the network performance in the content centric networking(CCN)a lightweight regional centralized storage routing strategy(RCSRS)is proposed.Firstly the idea of regional centralized storage is put forward.The node with the highest regional centrality is selected as the core node to cache content resources by taking the degree centrality closeness centrality be tweenness centrality of nodes and cohesion as indicators and the remaining ordinary nodes are only responsible for routing and forwarding and a routing strategy based on centralized storage is designed.When the route is forwarded the interest packet is quickly guided to the regional core node for content search.Simulations show that compared with traditional routing strategies this strategy has obvious advantages in terms of average hit rate average request delay and average hop reduction rate.

关 键 词：内容中心网络(CCN) 区域集中存储 内容路由 

分 类 号：TN393[电子电信—物理电子学]