Friday 27 January - Dong Xia (Student) 

- On the Performance of Rate Adaptation Algorithms with MikroTik Routers in IEEE 802.11g Networks

IEEE 802.11 networks are a low-cost solution to deploy and use. However, the network performance suffers from a wide range of sources such as interferences from surrounding devices. 802.11 networks provide multiple data rates to work with different wireless channel conditions. For example, a high data rate should be used if the wireless channel conditions are excellent. On the other hand, a low data rate should be used if the wireless channel conditions are poor.

Rate adaptation algorithm has been considered a key component in IEEE 802.11 networks to maximize network throughputs. It is able to adapt channel data rate in response to varying channel conditions. Indeed, many access points use rate adaptation as the default setting. MikroTik wireless routers are widely used by the network operators in New Zealand. RouterOS is the operating system provided by MikroTik, together with its proprietary rate adaptation algorithm. On the other hand, OpenWrt is a popular open source operating system for wireless router. It supports several rate adaptation algorithms, including Minstrel.

In this talk, we would like to share our experience on evaluating the performance of rate adaptation algorithms supported by the two operating systems. Our findings raise questions regarding the suitability of the MikroTik rate adaptation algorithm in typical indoor environments, and can provide useful information for wireless network operators and on design of rate adaptation algorithm.

download video file
Loading the player ...

Copyright WWW.R2.CO.NZ,  January  2011 All rights reserved.