TCP and UDP Performance over a Wireless LAN

francisy

【文件名】:06824@52RD_TCP and UDP Performance over a Wireless LAN.rar
【格　式】:rar
【大　小】:91K
【简　介】:Wireless communications are experiencing explosivemarket
growth in areas such as cellular telephony, satellite communications
and wireless LANs. Wireless LANs (WLANs) support
high speed networking over small areas that may be hard to wire
conventionally. Numerous vendors are offeringWLANsystems
at dropping prices, while the newIEEE 802.11 standard [1] will
eventually enable product interoperability. Typically, WLANs
emulate a wired LAN (e.g. Ethernet), which makes them easy
to connect with the Internet. However, their lower bandwidth
and higher loss rate makes their presence felt. Even moderate
packet loss due to wireless errors has severe effects on Internet
protocols such as TCP [2]. In order to ameliorate these performance
problems we need a clearer understanding ofWLAN
behavior, therefore measuring and analyzing the performance
of systems under realistic conditions is an important task.
To this end, we present here a comprehensive set of measurements
of aWLAN and analyze its behavior, extending previous
results in many ways. In Section II we outline our measurement
goals to provide a basis for test design. Section III details
our experimental setup, while Section IV explains the rationale
behind individual tests and the test suite, as well as the
data gathered during and after testing. These data are used in
Section V to describe the performance of both unidirectional
(UDP) and bidirectional (TCP) communications. We review
these results and discuss their implications in Section VI. We
conclude with a summary of our findings in Section VII.
【目　录】:
I. INTRODUCTION
II. MEASUREMENT GOALS
III. EXPERIMENTAL SETUP
IV. TEST AND OUTPUT DESCRIPTION
V. ANALYSIS OF TEST RESULTS
VI. DISCUSSION OF TEST RESULTS
VII. CONCLUSIONS