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.
| Original language | English |
|---|---|
| Pages (from-to) | 2427-2446 |
| Journal | Wireless Personal Communications |
| DOIs | |
| Publication status | Published - 17 May 2017 |
Keywords
- 0906 Electrical And Electronic Engineering
- 0805 Distributed Computing
- WSOLA
- MIH
- Playout algorithm
- Networking & Telecommunications
- VoIP
- Handover management
- 1005 Communications Technologies
- Fast handovers