3Rizzo J F, Morristown B. PCS and the PSTN[ C]//Proc. of IEEE International Symposium on Networks for Personal Com-munications. 1994:10 - 14.
4Politeh, Bucharest, Romania. GSM infrastructure used for data transmission[ C]//Proc. of IEEE International Conference on Advanced Topics in Electrical Engineering. 2011 : 1 - 4.
5Proctor T K, Res R M, Romsey M. Evolution to 3G services: provision of 3G services over GERAN( GSM/EDGE radio ac- cess network) [ C]//Proc of IEEE International Conference on 3G Mobile Communication Technologies. 2003:78 - 82.
6Abeta S. Toward LTE commercial launch and future plan for LTE enhancements(LTE-Advanced) [ C]//Proc of IEEE Inter- national Conference on Communication Systems. 2010: 146 - 150.
7Ghosh A, Ratasuk R, Mondal B, et al. LTE-advanced: next-gen- eration wireless broadband technology[ C]//Proc of IEEE In- ternational Conference on Wireless Communications. 2010: 10-12.
8Zahariadis T B. Migration towards 4G wireless communications [ C]//Proc of IEEE International Conference on Wireless Communications. 2004:6 -7.
9Jayanthi J G, Rabara S A. IPV4 addressing architecture in IPV6 network[ C]//Advanced Computer Control(ICACC). 2010:282 - 287.
10Geoff Huston. IPV4 Address Depletion and Transition to IPV6 [ J]. Internet Protocol Journal, 2007, 9(10) : 18 - 28.
