摘要
以太无源光网络的上行方向需要一种多址接入技术来防止以太数据包的碰撞。时分多址技术应用广泛,而波分多址技术极具潜力,是发展的方向。基于时分多址技术,提出了一种改进的动态带宽分配算法,结合了轮询机制和申请的优先级。通过建模仿真,证明了该算法可以取得较小的平均包延时和较高的带宽利用率。
A kind of multi-access scheme is needed in the upstream of EPON in order to avoid the collision of Ethernet packages. In the upstream of EPON, TMDA is widely used currently while WMDA looks great potential in the future. Based on TMDA technology, a modified dynamic bandwidth allocation algorithm, which integrates Polling scheme and requesting priority, is proposed. Simulation results prove that the algorithm is characteristic of low average package delay and high bandwidth utilization.
出处
《光电工程》
CAS
CSCD
北大核心
2004年第B12期173-176,共4页
Opto-Electronic Engineering
基金
上海市科委(04dz12045)
上海市重点学科项目资助
