| 3G technology for mobile communications has brought about tremendous impact on our life, and bring an unprecedented experience to people's lives. it makes surfing the Internet, networking games cast off the astrict of the venue, and achieved a true ubiquitous. TD-SCDMA system achieved and optimized these applications perfectly, and have become a leading-edge solutions in the system structure, stability of algorithm design and other aspects of field. However, people's demand do not stop at this time, a large number of market research and expert study shows that, 2Mbit/s transfer rate WCDMA R99's, 14.4Mbit/s R5 HSDPA peak rates have been far from enough to meet the future needs of the people. International Standardization Organization 3GPP make a new challenge after serious discussions on the question, that is, the peak rate to achieve 100Mbit/s data transmission in 2007. This is a great challenge, that is to be design a system, which transfer rate is 7-50 times to the current one in two years, and has perfect downward compatibility to protect existing investments. This new system is called E3G or LTELTE means that the objective is established, in order to have a clear line of technological development, 3GPP has developed a clear Schedule, the entire standards development process is divided into two stages, study item and work item.Stage research project finished in mid-2006, the stage mainly defined the target of demand, made a clear concept of LTE, and then collected proposals for candidate technologies, assessed of technical proposals, finally, determined whether they meet the target of demand. discussed the proposals that may be Integrated, and even may be debate on the superiority of some technology, and ultimately select a suitable technologies for the future of LTE. In fact, this is a combat of strength between manufacturers, and some effects of the Government in the following. Following the division of System functions, the definition of interface will be involved at this stage.The work of the project had established in before mid-2006, and started the establishment of standards. The stage discussed and drafted the future LTE standard in all aspects of the details, and continued until mid-2007. The whole process significantly speed up the pace than the 3G standards, this is also take into account the needs of the market. With the innovative broadband technology, 3GPP will also be released the new technology in the shortest time. This Operation has brought new opportunities, and more fast business can be achieved in the near future, or even can be comparable to wired network.In the development of mobile broadband, LTE is a natural milestone. It represents continuous development and more large-scale integration for mobile broadband. At present, all mobile operators are making their next plans for evolution. LTE, which is not only the representative of advanced technologies, but also technology which would conquer the world, would become the mainstream in their development. It is a necessary stage in its evolution development of mobile broadband. LTE utilizes a lot of technologies which is original planned for B3G/4G, such as OFDM, MIMO, etc. Therefore, comparing to the existing 3G and 3G + technology, LTE has its own superiority, and also provides a platform for their smooth evolution. Although it is still confronted by competition with WiMAX which is another 4G standard and prevalent in the business, terminals, etc., it would have a new breakthrough in 2009 obviously.At the micro context, with the evolution of LTE background, eNodeB has become the main object in the E-UTRAN, and has a top priority of development, on the one hand he has to upgrade in the exist 3G network by evolution, to meet the purpose of reduce the cost and speeding up the evolution process, on the other hand, within their own network software, hardware design also affect the stability of each base station. For the only management interface for user, local management LMT-B system even more so. In the future it will be responsible for the heavy task of network management, real-time monitoring, as well as each state configuration of eNodeB. When the eNodeB failure, it will be reported to LMT-B in time, these important features are need high demands to optimize itself.This article will base the design of the local management software for in-depth introduction, in the arrangement of the the article, followed by part of the overall approach, First of all, through involving the relevant technical knowledge and their brief background of LMT-B, to make readers understand what is LTE, What is the SNMP protocol and SNMP protocol development process, MIB database development and so on, then focuses on the overall structure of LMT-B, and its modular design. And the system is divided into two main presentations in the part of system introducing , the overall architecture design, communications platforms. To enable readers to understand the overall system, and then in-depth understanding of the specific design of communications platforms. The overall design reflects the thinking of system design, scheduling communication between modules, as well as the scope of function of the module, for the readers to understand the system.Communication platform described the internal structure of categories, the corresponding class diagram and its meaning in the design of the modules, completing the MIB communication models by optimize the structure and function, on the conditions that don't affect its real-time property, completing the receiver thread to receive the Trap message form eNodeB. Finally, using the typical describing of process to introduce the process of platform functions.In this paper, complete the model of information exchange between LMT-B and eNodeB, as well as the MIB database design and implementation. In order to improve system reuse degrees, reducing system complexity also reduce the development workload, LMT-B structure using hierarchical design. the system divided into the operating system, communication platform layer, service layer and user interface layer from bottom layer to top layer. Communication platform use the operating system layer API to provide various interacting communications functions between various service modules and eNodeB, including functional FTP client, MML commands to send and receive functions of debugging information. The business layer mainly achieved the function of business layer of the LMT-B, including pre-allocation of management, and state management.The system has been applied to the relevant enterprises's LTE eNodeB management system, and play an important role to a certain extent, the system will also be continue to improve in the future, to achieve a high degree of systematic design ,and to reach the goal of humanity. |
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