Distributed Floor Control for Push-to-Talk Service over Mobile Ad hoc Networks

Abstract

Push-to-talk (PTT), a walkie-talkie like service, supports half duplex wireless communications among users. The main characteristic of PTT is that the session can be established easily by pushing a button without complicated configurations. In PTT, floor control is a critical function to service quality. When more than one user wants to speak and pushes the button, the floor owner should be quickly and properly decided by some floor control mechanism. Mobile Ad hoc NETworks (MANETs) have been adopted by many kinds of applications due to the ease of deployment without any infrastructure. In this paper, we investigate the performance of distributed floor control for PTT over MANETS. Simulation experiments are conducted through a well known network simulation tool, NCTUns, in terms of some performance evaluation indexes. The simulation results indicate the guidelines for future design of distributed floor control over MANET.