标题：Joint Resource Allocation and Admission Control Mechanism in Software Defined Mobile Networks
作者：Chen, Geng; Zhang, Yueyue; Shi, Yunchi; Zeng, Qingtian
作者机构：[Chen, Geng; Zeng, Qingtian] Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266590, Shandong, Peoples R China.; [Zhang, Yueyue; Sh 更多
通讯作者地址：[Zhang, YY]Shanghai Aerosp Elect Technol Inst, Shanghai 201109, Peoples R China.
关键词：centralized algorithm; joint resource allocation and admission control;; OpenFlow; software defined mobile networks (SDMNs)
摘要：This paper presented a joint resource allocation (RA) and admission control (AC) mechanism in software defined mobile networks (SDMNs). In this mechanism, the joint RA and AC problem can be formulated as an optimization problem with the aim of maximizing the number of admitted users while simultaneously minimizing the number of allocated channels. Since the primal problem is modeled to be a mixed integer nonlinear problem (MINLP), we attain the suboptimal solutions to the primal MINLP by convex relaxation. Additionally, with the global information collected by the SDMNs controller, a centralized joint RA and AC (CJRA) algorithm is proposed by the Lagrange dual decomposition technique to obtain the global optimum. Meanwhile, we propose an OpenFlow rules placement strategy to realize CJRA in an efficient way. Moreover, a distributed algorithm is also developed to find the local optimum, showing a performance benchmark for the centralized one. Finally, simulation results show that the proposed centralized algorithm admits more users compared with the distributed.