Lecture17_2up - ECE-547 Introduction to Computer...

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1 Purdue University ECE ECE- 547 547 Introduction to Computer Introduction to Computer Communication Networks Communication Networks Instructor: Instructor: Xiaojun Xiaojun Lin Lin Lecture Lecture 17 17 Purdue University Residual service time Residual service time ¾ From (6) we have: ( ) (1 ) ( ) Q E R E W ρ = 2 ( ) ( ) 2 E E R λ τ = ¾ We can derive that 2 ( ) ( ) 2(1 ) Q E E W λ τ ρ = ¾ Hence,
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