Admission Control and Concurrent Scheduling for IPTV over mmWave-based WPANs

Abstract

Communications at 60 GHz millimeter-wave (mmWave) band is a promising technology for future wireless personal area networks (WPAN) supporting high data rate applications. Internet Protocol TV (IPTV) is anticipated to be one of the next killer applications, which requires high data rate and stringent quality of services (QoS) in terms of delay and loss. In this paper, we propose how to efficiently support IPTV flows in a mmWave-based WPAN with QoS guarantee, considering the characteristics of both the IPTV traffic and the mmWave communication technology. We first quantify the effective bandwidth of IPTV video sources using a simple, two-level Markov traffic model. By considering the overheads of the protocol stack in mmWave WPANs, we then quantify the minimal channel time needed for each IPTV flow. Since mmWave-based WPANs will deploy directional antennae to not only extend the transmission range, but also achieve higher spatial multiplexing gain, we further propose an admission control scheme and scheduling algorithm which take advantage of concurrent transmissions. Extensive simulations with NS-2 using real video traces have validated our analysis and demonstrate the efficiency and effectiveness of the proposed schemes, which will be an enabling technology for future mmWave-based WPANs supporting IPTV services.