Call admission control for wireless mesh network based on power interference modeling using directional antenna

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• 作者：Saravanan Kandasamy ; Carlos Marques ; Tania Calçada ; Manuel Ricardo…
• 关键词：Directional antenna ; Interference modeling ; Call admission control ; Wireless mesh networks
• 刊名：Wireless Networks
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：22
• 期：7
• 页码：2299-2316
• 全文大小：1,981 KB
• 刊物类别：Computer Science
• 刊物主题：Computer Communication Networks
  Electronic and Computer Engineering
  Business Information Systems
  
• 出版者：Springer Netherlands
• ISSN：1572-8196
• 卷排序：22

文摘

Interference is a fundamental issue in wireless mesh networks (WMNs) and it seriously affects the network performance. In this paper we characterize the power interference in IEEE 802.11 CSMA/CA based wireless mesh networks using directional antennas. A model based centralized call admission control (CAC) scheme is proposed which uses physical collision constraints, and transmitter-side, receiver-side and when-idle protocol collision prevention constraints. The CAC assists to manage requests from users depending on the available bandwidth in the network: when a new virtual link establishment request from a user is accepted into the network, resources such as interface, bandwidth, transmission power and channel are allocated in the participating nodes and released once the session is completed. The proposed CAC is also able to contain the interference in the WMN by managing the transmission power of nodes.