Radio Resource Allocation Using Multi-AP Coordination Considering Requirements for Video Transmission in Wireless LAN System

The demand for large-capacity, latency sensitive applications such as ultra-high-definition video transmission is increasing in wireless communication systems. In the next-generation wireless local area network (LAN), multi-access point (AP) coordination technique is attracting attention for the purpose of reducing collision probability and improving throughput. In high-demand applications such as ultra-high-definition video transmission, there is a problem that increasing the capacity of wireless communication does not necessarily lead directly to the realization of such applications. Therefore, to improve the number of applications that can be accommodated, the authors have studied application proportional fairness (APF), which is a radio resource control technique that improves the video throughput calculated based on whether the requirements for ultra-high-definition video transmission are satisfied. The joint use of the approach of APF and multi-AP coordination can provide the further performance improvement. In this paper, we modify APF to take radio quality into account to support multi-AP coordination and demonstrate its effectiveness through computer simulations.