Computer Science – Networking and Internet Architecture
Scientific paper
2009-02-03
Computer Science
Networking and Internet Architecture
14 pages, 17 figures,
Scientific paper
WLAN devices have become a fundamental component of nowadays network deployments. However, even though traditional networking applications run mostly unchanged over wireless links, the actual interaction between these applications and the dynamics of wireless transmissions is not yet fully understood. An important example of such applications are bandwidth estimation tools. This area has become a mature research topic with well-developed results. Unfortunately recent studies have shown that the application of these results to WLAN links is not straightforward. The main reasons for this is that the assumptions taken to develop bandwidth measurements tools do not hold any longer in the presence of wireless links (e.g. non-FIFO scheduling). This paper builds from these observations and its main goal is to analyze the interaction between probe packets and WLAN transmissions in bandwidth estimation processes. The paper proposes an analytical model that better accounts for the particularities of WLAN links. The model is validated through extensive experimentation and simulation and reveals that (1) the distribution of the delay to transmit probing packets is not the same for the whole probing sequence, this biases the measurements process and (2) existing tools and techniques point at the achievable throughput rather than the available bandwidth or the capacity, as previously assumed.
Cabellos-Aparicio Albert
Domingo-Pascual Jordi
Mangues-Bafalluy Josep
Portoles-Comeras Marc
No associations
LandOfFree
Analysis of bandwidth measurement methodologies over WLAN systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Analysis of bandwidth measurement methodologies over WLAN systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysis of bandwidth measurement methodologies over WLAN systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-298048