A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks Yao-Tien Wang; Vehicular Technology Conference, 2003. VTC 2003- Spring. The.

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Presentation transcript:

A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks Yao-Tien Wang; Vehicular Technology Conference, VTC Spring. The 57th IEEE Semiannual Volume 3, April 2003 Page(s): vol.3 Pen-Chu Li ( 李本筥 ) Speaker ： Pen-Chu Li ( 李本筥 ) Date ：

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 3 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 4 Introduction (2/3)

A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks 5 Introduction (3/3)

A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks 6 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 membership function Traffic load membership function

A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks 7 Cell load decision-making (2/3) Available channels

A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks 8 Cell load decision-making (3/3) Traffic load

A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks 9 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 10 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 11 Multi-channel borrowing (2/2) Defuzzification  Used center of area (COA) method  Output

A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks 12 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 13 Comments Only concepts,no algorithm

A Fuzzy-Based Dynamic Channel Borrowing Scheme for Wireless Cellular Networks 14 Q&A Thanks for your listening..