Abstract
Despite the significant interest in WiMAX technology and
deployment, there are very few publicly reported
measurements from testbeds and field trials. As such,
most WiMAX studies employ simulation and modeling. This
paper contributes to our understanding of what is
realistically possible using off-the-shelf fixed WiMAX
equipment today. We employ multiple competing traffic
sources over a point-to-multipoint WiMAX topology and
measure the capacity of the WiMAX equipment to handle a
multitude of VoIP flows between subscriber stations while
delivering a variable number of video streams. We measure
throughput, packet loss, and one-way delay for both
line-of-sight (LOS) and non-line-of-sight (NLOS)
conditions. For the one-way delay measurements we
synchronize the clocks of all testbed hosts with a
software-only, open source implementation of the IEEE
1588 Precision Time Protocol.We compare these one-way
delay measurements with those obtained when GPS-based
synchronization is used.
Original language | English |
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Title of host publication | 2008 6th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks and Workshops |
Place of Publication | Germany |
Publisher | IEEE Institute of Electrical and Electronic Engineers |
Pages | 8-15 |
ISBN (Print) | 978-963-9799-18-9 |
DOIs | |
Publication status | Published - 2008 |
MoE publication type | A4 Article in a conference publication |