Power Analysis for IEEE802.11 Wireless LAN

• Main Authors: Shi-Jie Huang, 黃世傑
• Other Authors: Wen-Kuang Kuo
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/79424005906752337808

碩士 === 國立成功大學 === 電腦與通信工程研究所 === 93 === 　　Power consumption is one of the bottlenecks for mobile devices。 In thesis， a new Markov model is developed to analyze the power efficiency of IEEE 802.11 Wireless LANs Distributed Coordination Function (DCF) protocol by taking into account the idle channel and the error channel， collisions， packet retry limits and no retry limit and freezing mechanism in backoff。 Based on the proposed mathematical model and power dissipation due to transmission and receiving， the power consumptions in different states of a tagged station performing the DCF protocol are computed。 The total power consumption and power efficiency of the DCF protocol is calculated accordingly。 We then investigate the influence of the Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) protocol upon the power efficiency of IEEE 802.11a and IEEE 802.11b Wireless LANs through combining the joint effect of MAC and PHY layers。 Finally， system performance and design criterions for IEEE 802.11 Wireless LANs are concluded。