LTE/SAE系统中EPS承载的研究与设计

为了更好地保证端到端的QoS机制,为用户提供差异化服务,LTE/SAE系统采用了EPS承载进行IP分组包的传输。通过对默认承载、专用承载、聚合资源调度、EPS承载架构等概念进行介绍,设计了满足LTE/SAE系统QoS机制的EPS承载。本方案对EPS承载的具体设计中在保证有效传输IP分组包的基础上缩短了会话建立时延,保证了QoS参数的有效映射。针对未来数据业务具有高速、突发性的特征,这种基于EPS承载传输IP分组包的应用,真正实现了用户的＂永远在线＂,提高了业务的数据速率。

Research and design of ESM bearer in the LTE/SAE system

In order to better ensure end to end QoS mechanisms and provide differentiated services for users, the EPS bearer was used to transfer IP packet in the LTE / SAE system. The default bearer, the dedicated bearer,aggregate resources scheduling technologies, EPS bear structure were described in detail and the EPS bearer was devised to meet QoS mechanisms in the LTE / SAE system. The specific design of the EPS bearer in this program shortened session setup delay based on ensuring effective IP packet transmission and ensured the efficient mapping of QoS parameters. Considering the character of high-speed bursting data services, the EPS actually realizes the users’＂alwaysonline＂and improves the operational data rate with application default bearer to transfer IP packet.