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3G网络已经发展成为高速数据传输网络系统,cdma 2000 1x EV-DO(高速分组数据HDR)将高速数据信道与语音信道分离,大大提高了系统的效率。语音数据包在网络传输中具有不可预计的网络延时,需要在接收端设置一个缓存装置,以减少通话抖动,得到满意的通话质量。本文主要研究基于信道感知的包调度算法,力求使缓出时延最小,尽量降低包丢失率。本文提出了两种基于信道感知的帧结构调度算法:最大速率算法(MAX)和比例公平性(PF)算法。并通过仿真分析其时延及Qos。
The 3G network has evolved into a high-speed data transmission network system. The cdma 2000 1x EV-DO (High Speed Packet Data HDR) separates high-speed data channels from voice channels, greatly improving system efficiency. Voice data packets in the network transmission with unpredictable network delay, the need to set up a receiver at the cache device to reduce call jitter, get a satisfactory call quality. This paper mainly studies the packet scheduling algorithm based on channel perception, and tries to minimize the delay of mitigation and minimize the packet loss rate. This paper proposes two frame structure scheduling algorithms based on channel sensing: maximum rate algorithm (MAX) and proportional fairness (PF) algorithm. And through the simulation analysis of its delay and Qos.