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With the advent of higher bandwidth internet services, video over IP is becoming more common with the video transfer mechanisms currently being standardized by the Open IPTV Forum. IPTV in the home is starting to dominate the market and is set to replace the way we watch our media content from watching it when broadcast to watching it on demand. Existing home gateway solutions or access points can...
Multimedia applications have been the key driving force in converging fixed, mobile and IP networks. A major hurdle in the realisation of this convergence is obtaining Quality of Service from a heterogeneous, best-effort service network. Interactive voice requires strict bounds on delay, jitter and packet losses, video adds significant bandwidth requirements to the network, while Internet only makes...
IEEE 802.11 protocol has found wide acceptability in the past few years, especially in embedded devices. Some of the embedded devices supporting 802.11 interfaces are voice and video-based devices like cordless phones, music players, camcorders, etc. These devices work in ad-hoc mode of operation for a number of applications. Such applications have some mandatory requirements that require one to determine...
We evaluate the capacity of an IEEE 802.16d and IEEE 802.11g testbed to simultaneously carry emulated H.264/AVC video and Speex VoIP and present results from an extensive measurement study. First, we employ two fixed WiMAX subscriber stations and one base station and report results for packet loss and one-way delay under both line-of-sight and non-line-of-sight conditions. In addition, we put these...
In vehicular networks, mobile users in vehicles can access the Internet and enjoy various kinds of services such as Voice over IP (VoIP) and online streaming video. To provide satisfactory quality of service (QoS), we need to appropriately place gateways to link mobile nodes to the Internet or any other information networks. In this paper, we address the problem of optimally placing gateways in vehicular...
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