Adaptive Controller Placement in Software Defined Wireless Networks

• 作 者: Feixiang Li Xiaobin Xu Xiao Han Shengxin Gao Yupeng Wang
• 机 构: Beijing Advanced Innovation Center for Future Internet Technology, Beijing University of Technology,
• 出 处: 中国通信（英文版）
• 发表日期: 2019年11期
• 关键词: computer application technology adaptive controller placement algorithm data fie

Controller placement problem (CPP) is a critical issue in software defined wireless networks (SDWN). Due to the lim-ited power of wireless devices, CPP is facing the challenge of energy efficiency in SDWN. Nevertheless, the related research on CPP in SDWN hasn’t modeled the energy consump-tion of controllers so far. To prolong the life-time of SDWN and improve the practicability of research, we rebuilt a CPP model consider-ing the minimal transmitted power of control-lers. An adaptive controller placement algo-rithm (ACPA) is proposed with the following two stages. First, data field method is adopted to determine sub-networks for different net-work topologies. Second, for each sub-net-work we adopt an exhaustive method to find the optimal location which meets the minimal average transmitted power to place control-ler. Compared with the other algorithms, the effectiveness and efficiency of the proposed scheme are validated through simulation.