摘要
EDF策略具有有线调度算法中最大调度域和时延保障特性,根据分组时延要求确定服务优先级,是一种动态权重调度策略,通过将IQ-VOQ结构EDF策略引入无线调度并通过加入信道补偿机制和门限丢弃策略,得到一种新的算法IQCEDF,它避开公平排队固有的时延-带宽耦合问题,获得了比EDF更加出色的时延特性,更适于为卫星通信系统分组业务提供服务质量保证。
EDF is a dynamic weight scheduling strategy, which has biggest scheduling domain and delay security, and can confirm the priority of QoS in accordance with packet delay. A new delay-based algorithm using IQ-VOQ structure combined with compensation and threshold dropping scheme, named IQCEDF, is presented. The simulation results demonstrate that the new algorithm provides better QoS performance than EDF. To avoid the delay-bandwidth coupling issue, IQCEDF is more suitable for onboard packet switching with quality assurance.
出处
《现代电子技术》
2011年第21期41-45,共5页
Modern Electronics Technique
基金
北京航空航天大学研究生创新实践:基于IP协议的星上交换结构
关键词
输入排队
星上交换
信道补偿
统计型服务质量
input queue
onboard switching
channel compensation
statistical QoS （Quality of Service）
