Design And Implementation Of Mobile Management System Of LTE Terminal

Nowdays,we cannot work or live without the mobile communication network,and our lives have been filled with all kinds of mobile terminal products.The development speed mobile communication tecknology is much faster than we can think.At the same time our demands for the mobile communications of both type and quality have greatly improved.Along with the quick development of communication technology,more and more requirements on communication service and quality have been put forward.However,the second generation of mobile communication technology has failed to satisfy the information services like web brushing,e-commerce,teleconference and etc.by using the mobile terminal.The third generation mobile communication which supports the mobile multimedia services currently is in the ascendant.Along with the continuous society development,higher requirements on the speed and stability of mobile communication have been put forward by the application of live streaming media and live videos like various sports entertainment and etc.This thesis mainly studies on the realization of the working principle of mobile management sub-layer on terminal as well as the software of the fourth generation mobile communication system,which contains the following key research contents:(1)Study on the network architecture of LTE mobile communication system and the detail(1)Study on the network architecture of LTE mobile communication system and the detail working process of mobile management sub-layer of terminal protocol stack,including the three main process of terminal attach network,detach network and location updating.And give the detailed study on the management method for EMM authentication encryption(2)Design the software architechture of the EMM sub-system in the single mode LTE terminal equipment.Design and implement the sate machine in the EMM entity,include main state and sub-state.Design the interface and message flow bewteen EMM and other entity.And the implement the software design case.(3)Study on the test method of the softwarer of protocol stack on terminal equipment,include simulator test and protocal conformance test.The purpose of simulator test is to perform the unit test of the EMM software.And the protocal conformence test is to verify the conformance with GCF protocol.