摘要
基于利用CPRI控制字的保留带宽实现2G/3G中RRH业务传输的目的,分析CPRI控制字子信道的帧结构,计算CPRI不同选择模式下保留字节的带宽。提出在同一站点同时有GSM/3G/LTE的RRH情况下,利用LTE的CPRI控制字中的保留字节传输GSM/3G的RRH业务的方案,并详述相应的映射方法,最后得出E1和FE信号映射后的结果。由此得出结论:利用CPRI从6.24至98.84Mbit/s的保留带宽,可以传输2路至38路的E1信号或多路的FE信号。
Based on the purpose of transmission of 2G/3G RRH services through the reserved bandwidth of CPRI control words, the frame structure of CPRI control word subehannel isanalyzed firstly, and the reserved bandwidth in different CPRI options is calculated.By using the reserved bandwidth of LTE CPRI control words, under the situation of GSM/3G/LTE RHH at the same site, a scheme of transporting GSM/3G RRH services is put forward ,and relevant mapping methods are elaborated.Finally, the results of these mapping of E1/FE signals are obtained.Thus the conclusions are： by using the CPRI reserved bandwidth which ranges from 6.24 Mbit/s to 98.84 Mbit/s,either E1 signal which is transmitting from 2 channel to 38 channel or multiway FE signals can be transmitted.
出处
《成都信息工程学院学报》
2015年第4期339-342,共4页
Journal of Chengdu University of Information Technology
基金
四川省科技支撑计划重点资助项目(2013GZ0026)
