移动ip书籍，很有用。
Third Generation (3G) mobile offers access to broadband multimedia services - and in the future most of these, even voice and video, will be IP-based. However 3G networks are not based on IP technologies, rather they are an evolution from existing 2G networks. Much work needs to be done to IP QoS and mobility protocols and architectures for them to be able to provide the functionality 3G requires.
“手机银行”也称为移动银行，它是通过移动通信网络将客户的手机连接至银行，实现利用手机界面完成各种金融理财业务的服务系统。“手机银行”服务的推出，使得手机不再只是一个通信工具，还能进行金融理财，同时也成为了一个移动POS(point of sales)机，使其成为继银行柜台、自助银行、电话银行、网上银行之后的新的服务渠道。
