Mobility management in GPRS

In order to make mobile customers send and receive E-mail and glance over internet, it can add node over GSM net to construct Packet Swich net .The customers can get access to Internet only by depending on putting GPRS card in note computer, without other equipment. The paper briefly discusses technological and logic of professional work of GPRS ,and its motive managements functions, also provides some technogical references for the development of GPRS system.