GPRS业务中IPQoS模型及其改进

The Model and Improvement of IP QoS in GPRS

描述了用OPNET实现的简化的GPRS模型。在仿真中给出了两种不同QoS参数的用户,仿真结果可以证明,GPRS可以实现数据上下文激活、数据传输过程,并能根据不同的数据上下文激活保证提供不同的QoS。接着,给出了在原来的信令过程基础上的改进,通过对时延敏感的用户的数据提供资源预留,保证了该类数据在骨干网不会发生拥塞,仿真结果证明该方法是行之有效的。

In this paper,we describe a model of G PRS implemented by OPNET.In simulation ,we give two kinds of users with different QoS parameters.By simulation results ,we can prove GPRS service can realize the process of data PDP Con-text activation and data transmission,and assure different link accord ing to distinct PDP Context activati on .We present the im-provement on the origin signaling.By providing the resource reservatio n to user data that is critical to dela y,We can assure no congestion in the IP backbone network.