论文标题
无线网络中的基于基于中心的内容缓存和交付策略
Efficient Betweenness Based Content Caching and Delivery Strategy in Wireless Networks
论文作者
论文摘要
在这项工作中，我们提出了一个内容缓存和交付策略，以最大程度地提高启用了启用缓存的无线网络的吞吐量。为此，首先定义了有效的中间（EB）（EB）（EB），这表明内容传递路径的比率首先定义，以捕获内容缓存和交付对网络流量负载分布的影响。在EB的帮助下，吞吐量的能力被证明是由于所有节点的成功输送概率（SDP）与EB的最小比率所致。通过有效地将节点的EB与其SDP匹配，提出的策略可提高计算复杂性低的吞吐量。仿真结果表明，所提出的策略与最佳策略（通过耗尽的搜索获得）之间的差距保持在小于6％。
In this work, we propose a content caching and delivery strategy to maximize throughput capacity in cache-enabled wireless networks. To this end, efficient betweenness (EB), which indicates the ratio of content delivery paths passing through a node, is first defined to capture the impact of content caching and delivery on network traffic load distribution. Aided by EB, throughput capacity is shown to be upper bounded by the minimal ratio of successful delivery probability (SDP) to EB among all nodes. Through effectively matching nodes' EB with their SDP, the proposed strategy improves throughput capacity with low computation complexity. Simulation results show that the gap between the proposed strategy and the optimal one (obtained through exhausted search) is kept smaller than 6%.
