Push to Talk over Cellular Traffic Modeling

This paper proposes traffic modeling and group behavior modeling for Push to Talk Over Cellular (PoC) traffic. The behavior of users in group forming service, and PoC traffic are investigated by simulations. It is assumed that the arrival process of PoC calls is Poisson, while the offered PoC service time and floor holding time are exponentially distributed. The proposed group generation follows Binomial model. The floor traffic is modeled as a limited source ON-OFF traffic. Based on proposed traffic models, PoC environment and PoC calls are simulated. Two invitation methods in PoC service are considered: one by one invitation, and batch invitation. The influence of stop talking actions, floor request habits, and maximum group size in PoC traffic are studied.