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It is well known that measuring the one-way delay of voice-over-IP (VoIP) packets is a daunting task. The challenge lies in the fact that the Internet implicitly enforces the end-to-end principle. This means that the endpoints are expected to operate independently. Without a synchronized timing, it is difficult for an endpoint to measure the one-way delay. This paper presents the refined version of...
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...
Voice over IP (VoIP) and high quality video streaming becomes an alternative to conventional telephony and TV service in many locations by way of ongoing deployment of WLAN hotspots. The newly proved IEEE 802.11e QoS enhancement standard will be a proper solution of delay demanding for real-time multimedia applications, while the existing auto rate fallback (ARF) link adaptation scheme, designed to...
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