Abstract
In vehicular ad hoc networks (VANETs), besides the original applications typically related to traffic safety, we nowadays can observe an increasing trend toward infotainment applications, such as IPTV services. Quality of experience (QoE), as observed by the end users of IPTV, is highly important to guarantee adequate user acceptance for the service. In IPTV, QoE is mainly determined by the availability of TV channels for the users. This paper presents an efficient and rather generally applicable analytical model that allows one to predict the blocking probability of TV channels, both for channel-switching-induced, as well as for handover-induced blocking events. We present the successful validation of the model by means of simulation, and we introduce a new measure for QoE. Numerous case studies illustrate how the analytical model and our new QoE measure can be applied successfully for the dimensioning of IPTV systems, taking into account the QoE requirements of the IPTV service users in strongly diverse traffic scenarios.
Highlights
One can observe strong growth in the elaboration of vehicular ad hoc network (VANET)technologies [1,2] and their usage to support various applications, which, at the beginning, were mainly concerned with the desire to improve traffic safety [3]
Most of the existing studies concerned with Quality of experience (QoE) in the context of audio/video communications in real time have been related to the audio-visual quality of the audio/video stream as it is offered to the receiver
The audio-visual quality is relevant to judge the QoE of IPTV services in VANETs, more so because the TV channels are offered to the corresponding car passengers via wireless access networks, and this may have a strongly negative impact on the quality of the stream delivered to its receiver(s)
Summary
One can observe strong growth in the elaboration of vehicular ad hoc network (VANET). The audio-visual quality is relevant to judge the QoE of IPTV services in VANETs, more so because the TV channels are offered to the corresponding car passengers via wireless access networks, and this may have a strongly negative impact on the quality of the stream delivered to its receiver(s). Done by Momeni et al, has started to study the availability of IPTV in the context of VANETs with their rather specific mobility models [18,19] All of these investigations are exclusively based on the usage of simulation models.
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