Abstract
Vehicular ad hoc networks (VANETs) represent a quickly emerging area of communication that offers a wide variety of possible applications, ranging from safety to entertainment. Internet Protocol Television (IPTV) services as an entertainment application over VANETs is considered to play an important role in the future of intelligent transportation systems and vehicular infotainment systems. Quality of experience (QoE) has a strong impact when choosing adequate IPTV services for end users. Among QoE measures, TV Channel Availability (CA) is utmost important. In this work, we investigate the channel availability in IPTV services offered to vehicular users via different access network technologies. We focus on different traffic intensities and various number of TV channels and we predict the CA of TV channels and the Channel Blocking Probability (CBP) to be expected. The comprehensive simulation experiments for motor-highway scenarios are achieved by means of an own simulation tool which is based on a detailed IPTV user behavior model.
Highlights
Vehicular ad hoc networks (VANETs) are a kind of wireless ad hoc networks that are intended for vehicles to communicate with each other and possibly with a roadside infrastructure to provide numerous applications varying from transit safety to driver assistance and Internet access
The results have been obtained by increasing the distance between vehicles with different speeds; traffic density will reduce and this leads to a reduction of Channel Blocking Probability (CBP)
5.2 Results obtained and their interpretation The simulation results demonstrate the implication of varying the number of the lanes, the number of TV channels provided and access network technologies in Figures 14, 15 and 16
Summary
VANETs are a kind of wireless ad hoc networks that are intended for vehicles to communicate with each other and possibly with a roadside infrastructure to provide numerous applications varying from transit safety to driver assistance and Internet access. The major goals of the VANET are to enable vehicle-to-vehicle (V2V) or vehicle to infrastructure (V2I)/Road-Side-Unit (RSU) communications so as to provide more safety, comfort and entertainment to the passengers [1]. Many research efforts in the area of VANETs try to increase transportation safety, efficiency and security. The focus in this research area moved towards VANET infotainments that aim to increase user satisfaction during car journeys. IPTV service over VANETs is an attractive feature to many IPTV service providers by transmitting television programs through IPbased wireless networks.
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