陆地无线接入网 meaning in Chinese

utran umts terrestrial radio access network umts

Associated with the research project , the author has done some research on the synchronization issues in utran and the synchronization methods used in ip networks to transport circuit emulation services ( ces )
本文结合科研项目的需要，对第三代移动通信系统陆地无线接入网( utran )中的各种同步问题以及全ip网络中传送电路仿真业务的同步方法进行了比较深入的研究。
Then , after the depiction of the network architectures of umts and utran , the five synchronization issues in utran , including the " network synchronization " , " node synchronization " , " transport channel synchronization " , " radio interface synchronization " and " time alignment handling " , are discussed in detail
然后在简要介绍了第三代移动通信系统及其陆地无线接入网的网络结构之后，较为深入的研究了utran中的网同步、节点同步、传输信道同步、无线接口同步和时间对齐处理等五种同步问题。