With the arrival of 4G era

the user has a large number of network

in order to meet the needs of users of value-added service

at the same time in order to increase customer loyalty

increase competition ability

LBS system also must be modifi ed to meet the needs of 4G users. In view of the 4G core network bearer on IP carrying network

thus positioning platform needs to access the IP carrying network can access 4G core network. At the same time

this paper introduced in detail the realization of the principle of positioning the core platform to complete fusion positioning function of 2G/3G/4G.