Abstract
The latest explosive growth in mobile networks has resulted in an increasing interest in optimisation techniques for mobile services. Resent advances in mobile wireless networks incorporate link-layer intelligence in order to enhance the performance of network and application layers. The Media Independent Handover (MIH) standard provides a framework that can make such link-layer intelligence available to upper layers. In this paper, a novel MIH-enabled playout algorithm for Voice over Internet Protocol applications is presented that aims to compensate for the degradation of voice quality caused by handovers. To that end, link-layer triggers in conjunction with speech time-scale modification techniques are exploited to mitigate the increase in delay and jitter induced by the handover process. Results of subjective listening tests show typical gains of 0.3 on a 5-point scale of the Mean Opinion Score with respect to existing playout scheduling schemes.
Highlights
The pervasiveness of Internet technologies to everyday life has greatly increased during the recent years
Mobility management is the process of keeping track of the location of the Mobile Node (MN) between successive calls, and supporting service continuity when the MN changes its point of attachment to the network
The Waveform similarity OLA (WSOLA) algorithm further improves the concealment as it exploits time-scaling modifications and can double the last packets length. This means that only the last received packet can be exploited by WSOLA in order to conceal the outage period
Summary
Asimakis Lykourgiotis received his Ph.D. in mobile and multimedia networking from the Electrical and Computer Engineering Department of the University of Patras, Hellas, in 2016 He is a postdoctoral research fellow at the School of Science and Technology at the Hellenic Open University and at the Wireless Telecommunications Laboratory of the Department of Electrical and Computer Engineering at the University of Patras. His main research interests include wireless local area networks, cellular networks, emergency services, mobility management, and multimedia transmission over wireless networks. His research interests include Smart Internet Technologies, Media Optimization across heterogeneous networks, QoE, Virtual Reality, Augmented Reality and cloud infrastructures and services
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
