Performance analysis of the intertwined effects between network layers for 802.11g transmissions

Abstract

While the canonical behavior of today's home Internet users involves several residents concurrently executing diverse Internet applications, the most common home configuration is a single external connection into a wireless access point (AP) that promises to provide concurrent high-bandwidth Internet access for multiple hosts through a wireless local area network (WLAN). Recent research has attempted to assess the performance impact of hosts with weak wireless connectivity upon the other WLAN hosts by employing measurement studies or analytic models that focus primarily on wireless channel characteristics. This paper examines the intertwined effects on performance of the user applications, the network protocol and the wireless channel characteristics via carefully designed experiments that leverage previously developed network measurement tools. The study provides empirical evidence that suggests the overall performance of a WLAN is not only determined by the individual wireless channel qualities associated with each host, but also by the interaction of the various network layers with respect to transmission contention, queuing at the access point, transport protocol, and behavior of the specific applications. These results imply that effective WLAN performance modeling needs to include details on multiple network layers.

Evaluation of E-learning using EDAS Method

“…Early studies reveal that e-language-studying [13].Through cautiously designed experiments using formerly evolved community measurement equipment, the interplay consequences of user applications, community protocol, and wireless channel traits on overall performance. This take a look at The precision associated with each host through wireless channel characteristics Aggregate of a WLAN Performance isn't great either, though The transmission will line up competitively of various network layers Determined with the help of correlations provides empirical evidence that get right of entry to point Transportation Ethics and Conduct precise packages [14].Analysis The definition of evaluation is to break an item into its parts to study what they do and the way they relate to each other. Examining blood in a laboratory to come across all its components is an example of analysis.…”

Using RTT Variability for Adaptive Cross-Layer Approach to Multimedia Delivery in Heterogeneous Networks

“…Many wireless performance studies tackle the capacity issues [19], such as how a single slow node brings down the all nodes' throughput [20]. Reference [21] identifies the pitfalls of wireless monitoring and provides solutions, such as merging mul-tiple sniffer traces and their placement in relation to AP positions.…”

Tools and Techniques for Measurement of IEEE 802.11 Wireless Networks

“…Generally, capturing aspects of WLAN performance requires more than collecting measurement data at any one layer in the protocol stack. Instead, measurement tools and techniques that enable the researcher to observe the intertwined effects between network layers are important for a comprehensive assessment of WLAN performance [12].…”

“…2) Build a Host Access Point: Results from prior WLAN measurement studies [1], [12], [18], [22] indicate that the internal allocation of buffers within a wireless AP can significantly impact the performance of WLAN applications. Moreover, these studies suggest that providing AP tuning mechanisms could yield performance gains.…”