Abstract
A growing number of mobile WiMAX deployments are in progress world-wide
and the technology is anticipated to play a key role in next generation mobile
broadband wireless networks. However, although the theoretical potential of
WiMAX technologies is already well established, independent, publicly
released, thorough evaluations of WiMAX network performance in the real world
are yet to become available. In this study, we consider synthetic Voice over
IP (VoIP) performance over the WirelessMAN-OFDMA air interface of a state of
the art mobile WiMAX testbed operating at the 3.5 GHz frequency band and
quantify the benefits of employing VoIP aggregation and Robust Header
Compression (ROHC). Although VoIP aggregation and ROHC have been proposed and
thoroughly evaluated through simulation and modeling, this is the first study
to present empirical results from employing them over the WirelessMAN-OFDMA
air interface of a real-world WiMAX system. Our results indicate that the
combined use of VoIP aggregation and ROHC can increase the number of flows
sustained without loss by approximately a factor of three.
| Original language | English |
|---|---|
| Title of host publication | GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference |
| Publisher | IEEE Institute of Electrical and Electronic Engineers |
| ISBN (Print) | 978-1-4244-4148-8 |
| DOIs | |
| Publication status | Published - 2009 |
| MoE publication type | A4 Article in a conference publication |
| Event | IEEE Global Telecommunications Conference, GLOBECOM 2009 - Honolulu, United States Duration: 30 Nov 2009 → 4 Dec 2009 |
Conference
| Conference | IEEE Global Telecommunications Conference, GLOBECOM 2009 |
|---|---|
| Abbreviated title | GLOBECOM 2009 |
| Country/Territory | United States |
| City | Honolulu |
| Period | 30/11/09 → 4/12/09 |
Keywords
- Mobile WiMAX
- Empirical evaluation
- IEEE 802.16
- ROHC:VoIP aggregation
- WirelessMAN-OFDMA