GSM网络IP化改造-电与通信工程专业毕业论文.docx

ON ON DEVELOPMENT OF IP GSM NETWORK ABSTRACT This paper discusses the necessity of the development to the IP GSM network and the typical network restructuring solutions．1nhis paper is composed of two parts．Part one discusses the IP GSM radio network and part two discusses the IP GSM core network． The fist section analyzes the feasibility and inevitability of the IP GSM radio network from the aspects of industry development，technology evolution，and network architecture development．The second section analyzes standard process of the IP BSS．～1．IP evolution can be implemented for the IP BSS in three phases．The third section is the main part：typical IP BSS solutions，including IP solutions on the Abis，A and Gb interfaces．This section elaborates the Abis Over IP solutions for TDM．based network，MSTP．based network，and data．network．based network．In addition， this section discusses the advantages and disadvantages of each solution．The fourth section discusses six typical network topologies：microwave-based FE， microwave．based E1，data network．based+xPON，data network．based+ xPON+SW．data network．based+SDH+SHDSLSHDSL-based Abis Over IP．The fifth section discusses the special solutions of the IP BSS．including the Clock Over IP solution．The fiIlal section summarizes the advantages of the IP BSS． The second part provides the evolution of the mobile network and draws the conclusion that the IP network will gradually replace the traditional TDM and ATM．based networks．Then．this part provides a comprehensive Ⅱ description description of the restructuring principles and solutions of the IP core network，including bearer network restructuring，IP No．7 signaling network restructuring，CS network planning，PS network planning，network security， IP QoS，and Ipv6hpv4．The discussion of each aspect involves the technology foundation，planning principles，and typical network topologies． With the development of the mobile network from 2G to 3G，and then to LTE，the mobile communications network will ev