LTE-Advanced空口监测仪表系统设计

System Design of LTE-Advanced Air-Interface Monitoring Instrument

随着国际范围的3GPP LTE技术的商用化,新型无线网络分析和优化仪表日益得到重视和发展。针对我国在LTE网络建设过程中,缺乏空中接口监测仪表的问题,研发符合3GPP及行业标准要求的LTE-Advanced空口监测仪表的硬件平台是必需的。基于FPGA的空口监测仪表的硬件系统,结合系统设计,分析了LTE-Advanced空口监测仪表的数据处理流程。从物理架构和逻辑架构方面分别阐述射频和基带板卡、协议板板卡的设计思路。最后,针对LTE-Advanced空口监测仪表的开发难度,对FPGA和DSP两种技术路线进行了分析比较。

With the commercial applications of the 3GPP LTE technology in the international scope, the new wireless network anal- ysis and the optimization of instruments gets sufficient attention and development. Due to the lack of air-interface monitoring instru- ments in the process of LTE network construction in China, researching and developing a hardware platforul of the LTE-Advanced air-interface monitoring instrument in compliance with the requirements of 3GPP and industry standard is indispensable. Based on FPGA, a system design scheme of LTE-Advanced air-interface monitoring instrument is proposed. Combined with the system de- sign, the data processing flow of the I.TE-Advanced air-interface monitoring instrument is analyzed. The paper illustrates the de- sign thoughts of the radio frequency, the baseband board and the protocol board from the aspects of the physical architecture and the logical architecture respectively. At last, as for the developing difficulty of the LTE-Advanced air-interface monitoring instru- ment, the technical routes of FPGA and DSP are compared and analyzed.