IJE TRANSACTIONS A: Basics Vol. 28, No. 4 (April 2015) 523-528   

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N. Narayanan Prasanth, K. Balasubramanian and R. Chithra Devi
( Received: August 26, 2014 – Accepted: January 29, 2015 )

Abstract    Need for high speed internet connectivity has lead to a substantial research in switching systems. Buffered crossbar switches have received a lot of attention from both research and industrial communities due of its flexibility and scalability. Designing a scheduling algorithm for buffered crossbar switches without starvation is a major challenge as of now. In this paper, we proposed a Delay based Prioritized Queue with Round-robin Scheduler (D-PQRS) which uses no speedup. Simulation result shows that D-PQRS reduces the starvation considerably with maximum throughput and minimum delay comparable to PQRS and LQF-RR.


Keywords    Crossbar Switch, Starvation, Router, Throughput, Delay


چکیده    نیاز به اتصال به اینترنت با سرعت بالا منجر به تحقیقات قابل توجهی در سیستم های سوئیچینگ گردیده است. سوئیچهای کراس بار بافر به دلیل انعطاف پذیری و مقیاس پذیری برای تحقیق و در جوامع صنعتی مورد توجه زیادی قرار گرفته اند. طراحی الگوریتم زمان بندی برای سوئیچ کراس بار بافر بدون قحطی یک چالش عمده از هم اکنون است. در این مقاله، ما یک صف بندی اولویت بندی شده بر اساس تاخیر با زمانبند (D-PQRS) ارائه می کنیم که از هیچ افزایش سرعتی استفاده نمی کند. نتیجه شبیه سازی نشان می دهد که DPQRS قحطی را بطور قابل توجهی با حداکثر توان و حداقل تاخیر کاهش می دهد که قابل مقایسه با PQRS و LQF-RR است.



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