基于时延的分级多业务调度算法研究

Research on leveled hybrid multi-service based on delay scheduling algorithm

紧跟CDMA20001xEV-DO系统提供服务质量保证这个热点议题,对系统前向无线分组调度算法进行研究,重点是针对有时延要求的业务(交互类和流类业务)。在EXP算法的基础上,根据分组对时延的要求不同,提出一种紧急判定准则,将分组按紧急程度送入紧急或非紧急队列等待调度,进而提出基于时延的分级多业务调度算法。选用Matlab仿真软件进行仿真,仿真结果表明,该算法能更有效的保证业务时延要求。

Following the topic discussion for QoS, the forward wireless packet scheduling in the lx EV-DO system is analyzed and discussed. It focuses on the service which has delay QoS （interacting and streaming class）. An urgency/non-urgency determinant rule is introduced to transfer the pre-scheduled packets which have different degree of urgency to urgent or non-urgent queue according to the different delay demand for each packet, and a leveled hybrid multi-service scheme is proposed. It is proven that the sche-duling could guarantee the delay of service more effectively than EXP by simulation using Matlab software.