Code Refactoring for Application Layer of an Open Source EPC MME

• Main Authors: Chen, Wei-Jen, 陳威任
• Other Authors: Chen, Jyh-Cheng
• Format: Others
• Language: en_US
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/g76f3y

碩士 === 國立交通大學 === 網路工程研究所 === 105 === With the increasing demands driven by the explosive development of multimedia and social networks, some research reveals that the current fourth-generation (4G) mobile technologies will not fulfill the expanding requirement in the near future. Consequently, organizations from industry to academia engage themselves in 5G research. Besides higher data rate and lower delay, 5G needs a more flexible architecture enough to deploy new services quickly, customize the network to satisfy different use cases, and utilize the hardware resources efficiently. Nevertheless, it’s difficult for general researchers interested in the core network to get available resources due to two issues. First, proprietary core networks cost more than one million NT dollars, which is unaffordable to most researchers. Second, the existing open source is not flexible enough to meet the 5G demands. Thus, we propose the concept of the reconfigurable core network (RECO). To embody the idea, we build a RECO MME based on open source. Besides, to make RECO easier for other developers to understand, modify, and extend for future innovations, we modify RECO MME with object-oriented language and code refactoring techniques, which makes the implementation more readable and more modifiable. In the end, we make several experiments to verify the feasibility of RECO and check the correctness of RECO MME. As a return for our efforts, we attain positive results.