终端移动性 meaning in English

terminal mobility
terminal portability

First analysing the merits and shortcomings of the wireless data communication system based on gsm and the wire data communication system based on pstn from the three aspects of the economy , terminal motility and real - time , then putting forward the subject through measuring and comparing the three factors mentioned above
从经济性、终端移动性、实时性三方面分析了当前基于gsm的无线数据通信系统和基于pstn的有线数据通信系统的优缺点，权衡三方面而提出了本课题。