基于C语言的高性能LTE RLC层设计与实现

Design and Implementation of High-performance LTE RLC Layer Based on C Language

LTE over Satellite需要对LTE协议栈开展针对卫星环境下的适应性研究,而其中的一个研究点就是LTE RLC子层。LTE RLC子层的适应性研究依赖其原型实现,从而可对分析、研究结果和仿真进行验证。提出了LTE RLC子层的系统设计和实现,并满足跨平台、高效和完备的设计原则。对LTE RLC协议栈实现的关键技术,包括内存映射、UM和AM模式下的协议运算、高精度定时器进行了讨论。设计验证结果表明,该RLC子层协议栈的实现满足系统设计的3个原则。

LTE over Satellite requires the in-detail adaptability study on LTE protocol stack with special concerns on the RLC layer,which in turn relies on the prototype implementation for result verifications of analysis and simulations. This paper proposes a system design and an implementation of the LTE RLC sublayer with design principles such as platform independence,high efficiency and integrity,and then discusses key technologies including memory arrangement,RLC UM / AM SN modulation,high resolution timer in the RLC sublayer implementation. The design verification results show that the implementation of RLC sublayer protocol stack meets the design principles.