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

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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..