基于最大收益的无线虚拟网络重映射算法

针对无线环境的动态性及虚拟网络请求到达与离开的随机性，使得物理网络负载分布不均衡，导致后续请求的接受率降低的问题，提出一种无线网络虚拟化中的两阶段重映射算法（two stages reconfiguration scheme for wireless network virtualization，TR-WNV）。该算法通过第1个阶段选出合适的虚拟网络进行重映射，接着在第2个阶段按照优先级对已选出的虚拟网络进行重映射，并根据离散度来判断每次映射效果。最后，通过仿真对算法进行验证，结果表明该算法在保证虚拟网络请求收益最大化同时，有效提高了虚拟网络请求接受率，实现整个底层网络的负载分布均衡。

Virtual network reconfiguration in wireless network virtualization based on maximum revenue

Due to the dynamic nature of the wireless environment,coupled with the random of the virtual network request arrival or departure,the load distribution of the physical network is not balanced and the acceptance rate of the subsequent request would be reduced.Based on this,two stages reconfiguration scheme for wireless network virtualization is proposed, called TR-WNV.The algorithm through the first stage selects the appropriate virtual network to map.Then,the selected virtual networks with the high priority are managed and following the discrete degree to judge each mapping.Finally,the simulation shows the algorithm improves the acceptance rate and benefit of request as well as achieving the load balance of substrate network.