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The paper mainly introduces SDBA of heterogeneous wireless network consisting of cellular wireless system and wireless LAN. The SDBA with a main aiming of improving user satisfaction adopts PF algorithm to regulate bandwidth so that fairness is basically guaranteed. In comparison between traditional UDBA and FDBA, SDBA can create a better user satisfaction based on reducing New Call Block Probability (NCBP) and Handoff Call Drop Probability (HCDP). Keyword: heterogeneous wireless network; bandwidth allocation; New Call Block Probability (NCBP); Handoff Call Drop Probability (HCDP); user satisfaction.
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