【摘要】：為了降低內(nèi)容中心網(wǎng)絡(luò)的緩存內(nèi)容冗余度和提高緩存內(nèi)容命中率,提出一種基于節(jié)點(diǎn)中心性度量的緩存機(jī)制(CMC)。CMC利用控制器獲取整個(gè)網(wǎng)絡(luò)的拓?fù)浣Y(jié)構(gòu)和緩存空間空閑率,根據(jù)拓?fù)涞倪B接關(guān)系分別計(jì)算各節(jié)點(diǎn)的度中心性、緊密中心性和介數(shù)中心性,并將這3個(gè)度量和緩存空間空閑率作為緩存節(jié)點(diǎn)選擇的重要指標(biāo)。仿真實(shí)驗(yàn)表明,與傳統(tǒng)內(nèi)容中心網(wǎng)絡(luò)(CCN)緩存機(jī)制相比,CMC可以有效地提高緩存內(nèi)容命中率,降低獲取內(nèi)容的跳數(shù)和平均請(qǐng)求時(shí)延。
[Abstract]:In order to reduce the cache content redundancy and improve the cache content hit rate of content center network, a cache mechanism (CMC). CMC based on node centrality measure is proposed to obtain the topology and cache space idle rate of the whole network by using the controller. According to the connection relationship of topology, the degree centrality, compact centrality and medium centrality of each node are calculated respectively, and the three measures and cache space idle rate are taken as the important indexes of cache node selection. The simulation results show that compared with the traditional content center network (CCN) cache mechanism, CMC can effectively improve the cache content hit rate, reduce the number of hops to obtain content and the average request delay.
【作者單位】： 重慶大學(xué)信息物理社會(huì)可信服務(wù)計(jì)算教育部重點(diǎn)實(shí)驗(yàn)室;重慶大學(xué)通信工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(No.61301119) 教育部高等學(xué)校博士學(xué)科點(diǎn)專(zhuān)項(xiàng)科研基金資助項(xiàng)目(No.20120191120025);教育部留學(xué)歸國(guó)人員啟動(dòng)基金資助項(xiàng)目(No.1020607820140002)~~
【分類(lèi)號(hào)】：TP393.0

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