Abstract
The WiMAX Reference Network Architecture can be used in point-to-point
and point-to-multipoint network topologies, and is suitable for providing
last-mile, building-to-building, and residential broadband connectivity.
Another major application, and the main focus of this study, is the use of
fixed WiMAX as backhaul for voice and data services. We evaluate voice over
IP (VoIP) performance over a fixed WiMAX testbed and quantify the benefits
from employing applicationand network-level aggregation. We examine such
aggregation schemes using our fixed WiMAX testbed and report the results for
both uplink and downlink. If we use objective mean opinion scores (MOS) as
the main gauge of overall performance, application-layer aggregation appears
to be the best scheme, allowing our fixed WiMAX testbed to sustain nearly
three times more flows in the downlink and over two times more flows in the
uplink than when no aggregation is used, at comparable MOS values.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 4th International Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities (TRIDENTCOM) |
| Place of Publication | Innsbruck |
| Publisher | Association for Computing Machinery ACM |
| ISBN (Print) | 978-963-9799-24-0 |
| Publication status | Published - 2008 |
| MoE publication type | A4 Article in a conference publication |