Blocking Probabilities in a Mobility-Aware CAC Algorithm of a Vehicular WiFi Network
Irene P. Keramidi, Ioannis D. Moscholios, Panagiotis G. Sarigiannidis, Michael D. Logothetis · 2021
In this paper we study a mobility-aware call admission control algorithm in a vehicular WiFi network. To this end, we consider a vehicle which has an access point installed on it with a certain wireless local area network capacity. When the vehicle is in the stop phase it can accommodate both new and handover calls by providing prioritization to handover calls via the bandwidth reservation (or guard channel) policy. When the vehicle is in the moving phase it only accommodates new calls. In both phases, blocking occurs if the requested bandwidth units are not available at the time of a call's arrival. To determine call blocking and call dropping probabilities we propose efficient recursive formulas contrary to methods that exist in the literature and require complex enumeration and processing of the system's state space.