为了提高实际数字视频广播的因特网协议(IP overDVB)系统的封装效率,详细分析了目前普遍采用的多协议封装(MPE)以及由IETF(the internet engineering taskforce)提出的单向轻简封装(ULE)各自的封装过程,并在此基础上给出了统一的封装效率计算公式。通过对局域网及卫星数据广播网2种实际网络环境中的IP包包长分布进行统计分析,详细比较了2种技术在实际系统中的封装性能,并进一步提出了提高实际系统效率的IP包封装方案。理论分析和实验仿真表明:ULE可提供比MPE较为高效的封装效率,针对实际系统提出的封装方案可最大化系统的封装效率,为优化实际系统设计提供重要的参考依据。 In order to improve the encapsulation efficiency of the IP overDVB system, this paper analyzes in detail the multi-protocol encapsulation (MPE) and the unidirectional lightweight encapsulation (ULE) proposed by IETF (the internet engineering taskforce) Their own packaging process, and on this basis, a uniform calculation formula of package efficiency is given. Through the statistical analysis of IP packet length distribution in two kinds of actual network environments of LAN and satellite data broadcasting network, the encapsulation performance of the two technologies in actual system is compared in detail, and the IP packet encapsulation to improve the actual system efficiency is further proposed Program. The theoretical analysis and experimental simulation show that ULE can provide more efficient packaging efficiency than MPE. The package scheme proposed for the actual system can maximize the efficiency of the system and provide an important reference for optimizing the actual system design.