Analyzing Channel Hogging Behavior in a Multihop Wireless LAN

• Main Authors: Lee Jeng-Shiou, 李政修
• Other Authors: Ting-Chao Hou
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/76499069381562727813

碩士 === 國立中正大學 === 電機工程研究所 === 93 === Recently, the wireless local area network is getting more and more popular. Among several wireless network standards, IEEE 802.11 is the most famous one. It specifies the medium access control (MAC) and physical (PHY) layers for wireless local area networks. In the MAC layer, it introduces the distributed coordination function (DCF) and point coordination function (PCF). The distributed coordination function (DCF) scheme is the primary medium access control (MAC) scheme for IEEE 802.11 wireless LANs. In this thesis, we analyze the channel hogging behavior in multi-hop and single-hop IEEE 802.11 wireless local area networks. In a single-hop WLAN, we observe no channel hogging behavior. In the multi-hop networks, due to the hidden terminal phenomenon, nodes at different locations suffer different degrees of channel hogging phenomenon. Their throughputs are therefore affected by the extent they are involved in channel hogging.