无线自组网TCP吞吐量上界研究.PDFVIP

36 18 2010 9 Vol.36 No.18 Computer Engineering September 2010 ·· 2010 A TP393 TCP 1 2 (1. 430079 2. 410083) TCP TCP - TCP TCP TCP TCP Research on TCP Throughput Upper Bound About Wireless Ad Hoc Network 1 2 CHEN Guo , LI Qing-hua (1. School of Electronic Information, Wuhan University, Wuhan 430079, China; 2. College of Information Science and Engineering, Central South University, Changsha 410083, China) AbstractThe data flow entering the node is regulated by leaky bucket, and the node provided rate-latency service for the flow. It has derived the TCP throughput upper bound for wireless Ad Hoc network based on the existing link throughput model using network calculus theory. For grid topology wireless Ad Hoc network, all simulated results for different data flows are bounded by theoretical results. These show the TCP throughput upper bound model performs well and the wireless TCP still needs more improvements. Key wordswireless Ad Hoc network; deterministic network calculus; Transmission Control Protocol(TCP); throughput upper bound 1 F 3() ∀f ,g ∈ F f g ⎧inf [f (t −s ) +g (s )] t 0 ⎪ (f ⊗g )(t ) ⎨s∈[0,t ] 0 t 0