关键词: 弹性分组环, 虚拟输出队列, 动态加权轮询算法, 空间复用

Abstract: IEEE802.17 standard proposes that the stations transmit data according to service class.This would lead to HOL，reducing the RPR’s bandwidth utilization and increasing the packets’loss rate.To reduce these deficiencies，this paper presents a new data transmitting scheme.It uses virtual output queuing based on TTL as the buffered queue of being sent data.The satisfied virtual output queuing should be ascertained by some method based on data stream.Finally，those satisfied queuing with dynamic weighted round-robin algorithm is dispatched.The simulation results show that the new scheme has been effective in overcoming the HOL and ensuring the fairness of every data stream.So it plays a significant role in spatial multiplexing of RPR.

Key words: resilient packet ring, virtual output queuing, dynamic weighted round-robin algorithm, spatial multiplexing