Demonstrating a Dynamic Multi-Channel Access 802.11 Mesh Network Prototype for High Bandwidth Requirement
نویسندگان
چکیده
Multi-Channel Access has the potential to solve the throughput and scalability issues that mar the performance of 802.11 mesh and adhoc networks. It allows multiple simultaneous transmissions in a radio neighborhood thereby increasing network throughput and scalability. In spite of this potential, it is limited to simulation studies and its implementation on hardware is rare. In this demo, we demonstrate working of a dynamic multi-channel access 802.11 network prototype. The prototype is based on a MAC protocol called Cooperative Asynchronous Multi-channel MAC (CAMMAC), which features multi-channel use in single antenna, asynchronous mesh/ad hoc network. The protocol employs a unique control-plane cooperation approach to achieve dynamic multi-channel access. The implementation is done using COTS WiFi cards and the ath5k Linux driver. To the best of our knowledge, this is the first work that implements dynamic multi-channel access using COTS Wi-Fi cards. The demo clearly demonstrates the performance superiority of multichannel access over traditional single channel access under heavy traffic conditions.
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