LTE的主要性能指标随着宽带无线接入技术的出现,接入移动化、宽带化的业务需求越来越大,用户对移动通信网络速率的要求也越来越高。WiMAX等无线宽带接入方案迅猛发展;HSPA虽然在支持移动性和QoS方面有较大优势,但网络结构和空中接口比较复杂,无线频谱利用率不高,传输时延 Key Performance Indicators of LTE With the advent of broadband wireless access technology, the demand for services of access mobility and broadband services is increasing. Users are also demanding higher and higher rates of mobile communication network speeds. WiMAX and other wireless broadband access solutions are developing rapidly. While HSPA has great advantages in supporting mobility and QoS, the network structure and air interface are complicated, and the utilization rate of wireless spectrum is not high. The transmission delay