本发明系揭露一种基于移动通信网络信号之实时车速信息估计方法，系在移动通信网络端截取网络信号，利用定位方法估计道路上发生换手进程和位置更新进程位置，计算出每个换手位置间和位置更新进程间的道路距离。再收集实时之换手进程和位置更新进程，取得同一支手机之换手串行与位置更新串行和时间差，并以各个换手位置间和位置更新进程间的道路距离进行该手机之车速估计。同时考量换手进程和位置更新进程之信息，在车速信息的估计上分为下列四种方式，判断换手进程/位置更新进程可能发生的位置，以及两个进程间的时间差，依此估计该手机之车速，并计算同一时间周期内同一路段上一或复数个手机之平均车速。

The present invention discloses a real-time vehicle speed information estimation method based on mobile communication network signals, which comprises capturing network signals at a mobile communication network end and using a positioning method to estimate the positions of a road where handover procedure and position update procedure occur; computing the road distance between various handover positions and position update procedures; then collecting real-time handover procedures and position update procedures to obtain the handover sequence, position update sequence and time difference of the same mobile phone; using the road distance between various handover positions and position update procedures to estimate the vehicle speed of the mobile phone; and considering at the same time the information of the handover procedures and position update procedures, such that the estimation of vehicle speed information includes the following four types: determining positions where handover procedures and position update procedures may occur; determining time difference between the two procedures; estimating the vehicle speed of the mobile phone according thereto; and computing an average vehicle speed of one or plural mobile phones in the same time period and on the same road section.