Cooperative WiFi Management: Nash Bargaining Solution and Implementation

Self-managed smart devices with growing intelligence can optimize their own performances but pose potential negative impacts on others. The concept Cyber Physical Social System (CPSS), originated from Cyber Physical System (CPS), takes the social dimension into considerations and provides a new paradigm for social interactions between self-managed smart devices. In this paper, we focus on modeling the social interaction among smart devices, and conduct a case study in the autonomous WiFi scenario. Specifically, we propose an active interference measurement methodology reflecting both in-range interference and hidden terminal interference, and a coordinated power control based on the Nash bargaining is further formulated for interference reductions. A four-AP SWP testbed is implemented and deployed in a real office environment, where the social power control between VAs can bring great interference reductions for the APs with hidden terminal interference than the noncooperative power control scenario.