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3G时代已经到来,伴随着3G的快速发展,移动流媒体服务的需求迅速增长。由于移动网络带宽远达不到互联网的带宽,流媒体业务的增长将增加网络延迟,影响流媒体的观看质量,因此提出了一种新的基于P2P的3G流媒体缓存代理结构PSPA,配合PSPA设计了代理缓存置换策略SCOP,该设计能有效降低对移动核心网带宽的占用。最后,仿真实验和实验结果分析表明,PSPA体系与代理缓存置换策略SCOP的结合,能有效提高移动流媒体的服务质量,对3G流媒体的应用具有一定的参考价值。
The era of 3G has arrived. With the rapid development of 3G, the demand for mobile streaming media services has rapidly increased. As the mobile network bandwidth is far less than the bandwidth of the Internet, the growth of streaming media services will increase network latency and affect the viewing quality of streaming media. Therefore, a new PSP-based 3G streaming media caching proxy architecture PSPA is proposed with PSPA design Acting caching replacement strategy SCOP, the design can effectively reduce the occupation of the mobile core network bandwidth. Finally, the simulation and experimental results show that the combination of PSPA system and proxy caching permutation strategy SCOP can effectively improve the service quality of mobile streaming media, and has certain reference value for the application of 3G streaming media.