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A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
Yao-Tien Wang;Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE SemiannualVolume 3, 22-25 April 2003 Page(s):1517 - 1521 vol.3
Speaker : Pen-Chu Li (Pen-Chu Li ( 李本筥李本筥 ))Date : 2006-1-3
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
2
Outline
Introduction Cell load decision-making Cell involved negotiation Multi-channel borrowing Conclusions Comments
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Introduction (1/3)
Wireless network Base station (BS) Mobile station (MS) Mobile switching center (MSC)
Channel allocation FCA DCA
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Introduction (2/3)
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Introduction (3/3)
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Cell load decision-making (1/3)
Indicates the significance of various loading regarding with the cellular system.
Fuzzification module Fuzzy rule base Construct different available channels memb
ership function Traffic load membership
function
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Cell load decision-making (2/3)
Available channels
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Cell load decision-making (3/3)
Traffic load
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Cell involved negotiation
Hot It plays the role of the borrowing channel action
Cold It plays the role of the lending channel action
Inference engine Intersection union
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Multi-channel borrowing (1/2)
Reallocate several channels instead of only one channel borrowed while making load balancing in each iteration
“Very hot” borrowing several channels form the cell with “Very cold”
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Multi-channel borrowing (2/2)
Defuzzification Used center of area (COA) method
Output
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Conclusions
Four modules Fuzzy rule base Fuzzy inference engine Fuzzification defuzzification
FDCBS Cell load decision-making Cell involved negotiation Multi-channel borrowing phases
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Comments
Only concepts ,no algorithm
A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks
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Q&A
Thanks for your listening..