benoit latré isbo ng wi nets - avoiding interference
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NGWiNet - 1st Workshop 1st year demo IBCN
Lieven Tytgat, Benoît Latré, Ingrid Moerman
www.ibcn.intec.ugent.be INTEC Broadband Communication Networks (IBCN) Department of Information Technology (INTEC) Ghent University - IBBT
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Avoiding interference
Goal: Node selects channel with least interference
for receiving data
How: Node scans the channels Node chooses the best channel (channel X) Node broadcasts this channel to its neighbors Neighbors send to the node on channel X
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Avoiding interference
Channel scanning: demo
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Avoiding interference
Microwave results
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Access point turned on on blue channel (overlap on red channel)
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Avoiding interference
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Avoiding interference
Demo: Bring access point online Node stays on same channel
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Avoiding interference
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Avoiding interference
Demo: Bring access point online Node selects new channel
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Avoiding interference
Conclusions Dynamically choosing a new channel improves PER
Faster and more reliable channel scanning needed! Use IMEC’s sensing agent
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Questions ? Lieven Tytgat, Benoît Latré, Ingrid Moerman
www.ibcn.intec.ugent.be INTEC Broadband Communication Networks (IBCN) Department of Information Technology (INTEC) Ghent University - IBBT