The Study of NS Network Simulator in WLAN Environment

• Main Authors: Chia-lin Hsu, 徐嘉臨
• Other Authors: Wei-Kuan Shih
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/87089112579205857335

碩士 === 國立清華大學 === 資訊工程學系 === 92 === As the wireless network develops quickly, more and more creative technologies have been invented. In order to provide higher quality of service, the researchers have to understand where the problems are. So a network simulator is a very helpful tool for them to study. NS2 is a very famous network simulator and widely used. It’s open source. Any one can extend needed functions over it. The thesis implements the PCF protocol referencing the contribution of Anders Lindgren and Andreas Almquist, Lule, University of Technology and fixes some bugs. It is the basis of the implementation of chapter 4. As the unpredictable channel errors occur during the packets transmission in wireless network, the quality of service is degraded. The problem that we have to face is how to schedule the traffic fairly and maximum the system throughput. In this paper I implement two Real-Time packet scheduling algorithm and simulate channel errors in NS2 network simulator. According to the result of simulation, it can be the directions of improve the algorithm in the future.