IPTV网络测试仪AAL5功能的设计与FPGA实现

Implementation and Design on Function of AAL5 in IPTV Network Tester Based on FPGA

针对IPTV网络的监测与维护,结合目前网络的快速演进,在综合考虑业务发展和运营商实际需求的基础上,提出了ADSL接入侧的设计思想,设计了IPTV网络测试仪中的AAL5功能,对仪表的系统架构、AAL5的SAR,CS实现算法,异步转移模式(ATM)测试的关键指标等进行了阐述,并通过FPGA对其进行仿真及验证,结果证明,此方案设计具有高度的可靠性和稳定性,在IPTV网络测试仪中得到了良好的应用。

In view of the monitoring and maintenance on IPTV network, together with the rapid evolution of the network, to cater to the requirement of the service evolution and the providers reality, the design method of ADSL access lateral is put forward, and the function of AAL5 on IPTV network tester is designed. Meanwhile, the architecture of the tester is described, and the algorithm on the AAL5 and key indicators extraction in the Asynchronism Transfer Mode（ATM） testing are also analyzed. Finally, the design is simulated and verified by FPGA. The results prove that the design is reliable and stable, and has good application in IPTV network tester.