【摘要】 为满足不同类型的数据在交换式工业以太网中传输的不同要求,在交换机中引入具有优先级队列的加权轮循(Weighted Round Ring,WRR)策略,应用网络演算理论推导不同类型的数据在该策略下的等待时延上界,得出计算公式,并与绝对优先级调度算法进行比较,展现该策略在工业以太网中应用的优越性.更多还原

【Abstract】 To satisfy the different requirements for different real-time data in switched industrial Ethernet, the Weighted Round Ring (WRR) policy with a per-priority queue is introduced into switches. Network calculus is used to derive the maximum waiting delay boundary for different data under the policy, and the formula is obtained, which is compared with strict priority algorithm. The advantages of applying the improved WRR policy into industrial Ethernet is presented.更多还原