CDMA2000中连接建立的分组延时分析

Packet Delay Analysis of Session Setup in CDMA2000

分组的RLP(无线链路协议)传送延时是连接建立延时的一个重要组成部分.已有的研究一般假设满负荷的条件计算该部分延时,但该假设在连接建立的过程中不成立.本文分析连接建立过程中分组的RLP传送延时,通过考察组成一个分组的所有数据帧在不同轮次的传送状态,提出了一种迭代计算方法.仿真结果表明,提出的方法可以准确地计算连接建立条件下的分组延时.满负荷条件下的延时和连接建立条件下的分组延时相比较,前者的延时可比后者的延时多达到100ms.

Packet delay in radio link protocol layer is the critical part of session setup delay.Previons study assumed saturation to calculate this delay. But the saturation assumption does not hold for session setup. This paper analyzes the RIP packet delay in session setup. Through the study of the transmission status of all flames in the same packet, we propose an iterative calculation method. Simulation results demonstrate that the proposed method can accurately calculate the packet delay in session setup. Comparing the packet delay under the saturation assumption with the packet delay under session setup, we can find that the former delay can be 100 ms longer than the later one.