基于边缘优先的ICN缓存协作策略

doi:10.11959/j.issn.1000-436x.2017064

Abstract

Abstract:

In order to optimize the replica placement in information centric networking,an edge-first-based cooperative caching strategy (ECCS) was proposed.According to the strategy,cache decision was made during the interest forwarding stage.The decision result and statistic information would been forwarded to upstream routers step by step.Utilizing the information,upstream nodes could update their cache information table immediately to achieve cooperative caching.The experimental results indicate ECCS can achieve salient performance gain in terms of server load reduction ratio,average hop reduction ratio,average cache hit ratio,compared with current strategies.

Key words: information centric networking, in-network caching, content placement, edge priority, cooperative caching

CLC Number:

TP393

Jiang ZHI,Jun LI,Hai-bo WU,Yong-mao REN. Edge-first-based cooperative caching strategy in information centric networking[J]. Journal on Communications, 2017, 38(3): 53-64.

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References 22

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符号	含义
V	缓存节点集合
F	内容块集合
p(f)	内容块f∈F的流行度
c_v	缓存节点v的最大容量（内容块为单位）
r_vf	内容块f∈F在节点v∈V处的请求速率
b_f,v	内容块f∈F在节点v∈V处缓存后的收益

参数	默认值	变化范围
Zip分布参数	1.0	0.7~1.3
内容总数	50 000	20 000~80 000
缓存容量/slot	40	10~100
请求速率/(request·s^?1)	200	50~350

Edge-first-based cooperative caching strategy in information centric networking

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