GPRS中QoS管理机制研究

QoS Management Mechanism over GPRS

通用无线分组业务 (GPRS)中服务质量 (Qo S)管理机制是当前 GPRS研究的热点 ,它包含四大部分 :业务源特性描述、整形与监管 (Shaping/Policing)、调度 (Scheduling)和接纳控制 (CAC) ,其中 CAC是核心 .本文对每一部分的机理和实现算法进行了描述 ,且给出了相应的试验方案 ,包括业务源选择和仿真语义、分组类型和比率的定义 .

The research on the QoS (Quality of Service) over GPRS (General Packet Radio Service) which consists of the description of traffic characterization, shaping/policing, the packet scheduling and CAC (Call Admission Control) is very important at present. This paper first introduces the principles and implementation algorithms for all of them, then gives out the test schemes including the selections of the traffic sources and the definitions of the simulating semanteme, types of packets and ratio.