4G 网络建设的推进和业务的推广，使得数据业务和语音业务逐步向4G 网络转移。按照这种网络发展趋势， 2G 网络承载的业务越来越少，直至最终消失。在此过程中，2G 网络如何发展必须有一个清晰的思路：如何一边辅助4G 网络 的成长，一边做好原有资源的合理配置改造，如何对800M、900M 频段refarming 提高频谱效率。本文将结合各个运营商的2G 网络的特性以及4G 网络的发展方向，进行相应的发展策略探讨。

With the construction promotion and business promotion of 4G network, data services and voice services gradually shift to the 4G network. According to the development trend of the network, the business carried by 2G network will become more and less until eventually disappear. In this process, there should be a clear idea of the development of 2G network: how to assist the growth of 4G network while rationally allocating the original resources, and how to improve the efficiency of refarming the 800m and 900m frequency. This thesis discusses on the development strategy combining with the characteristics of 2G network and the development of 4G network.