内容中心网络状态感知路由设计

doi:10.11959/j.issn.1000-436x.2016114

Abstract

Abstract:

To improve the efficiency of content delivery and to reduce the network overhead of content centric network (CCN),a network status aware routing(NSAR)mechanism was proposed.NSAR utilized data packets from the content server nodes to collect network statuses.The forwarding probability of the matching ports of the nodes on the path would be updated according to the network statuses.The subsequent interest packet forwarding would be based on the updated forwarding probability.Therefore the content delivery efficiency would be improved.Simulation results show that NSAR can effectively reduce the average delay of content requests and the number of packets in network as well as the network bandwidth overhead compared with the traditional routing algorithm in CCN.

Key words: content-centric network, routing mechanism, network status, status aware, forwarding probability

Yue-ping CAI,Jun LIU. Network status aware routing in content-centric network[J]. Journal on Communications, 2016, 37(6): 38-48.

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References 19

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仿真参数	设置值
仿真网络	NSFNET
节点数	14
链路数	21
链路带宽	100 Mbit/s
请求者数量	30
用户带宽需求	均值为4 Mbit/s的泊松分布
用户请求频率	均值范围1～9个/秒的泊松分布
链路延时因子	0.4
跳数因子	0.2
路由节点负载因子	0.2
服务节点负载因子	0.2
网络状态影响因子	0.5
探测深度	1

Network status aware routing in content-centric network

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