Method for updating location of user equipment

摘要

A method for updating location of a user equipment in a cellular system is disclosed. The method comprises the user equipment receiving route update radius information 220. The user equipment further calculates a route update radius from the received route update radius information 230 by using a random number generated by the user equipment. The user equipment then transmits the calculated route update radius to a cellular network 240. Alternatively, the method comprises the cellular network receiving a route update message from a user equipment 420. The cellular network further calculates a route update radius 430 using a random number generated by the cellular network. The cellular network then unicasts the calculated route update radius to the user equipment 440.