應用於4G核心網路支援各種異質網路之Cross-layer AAA

Abstract

第四代（4G）行動通訊系統預期會擁有更高的多媒體資訊承載能力、更快的傳輸速率及採用IP來傳遞資料等多項功能特點，未來服務網路勢必形成整合之All-IP的網路架構。另外傳統OSI網路七層架構已行之多年，各層級間互相分工來共同達成網路傳輸之目的。因此我們利用Cross-layer了的技術來提升4G網路的效能，所以本篇論文提出「應用於4G核心網路支援各種異質網路之Cross-layer AAA」系統，可以在異質網路中進行認證整合，使UE在Handoff的過程中進行使用者認證的過程中，同時應用Cross-layer的技術使用底層協定來產生上層金鑰所需的Seed進行後續資料傳輸IPsec使用的金鑰，並經由我們設計的AAA-Analyzer (Authentication, Authorization, Accounting，AAA）提供異質網路間計費、監控及側錄來解密傳輸資料等。

The 4th generation mobile communication system certainly will have a lot of improvement such as supporting higher multimedia loading, faster transmission rate, and implementation of IP, the future service of the network will definitely convey into an All-IP network. Moreover, the traditional layered OSI model that each of the layers is given a certain task, now we introduce the concept of Cross-layer network to improve the performance of 4G network, we proposed in this paper “Application of Cross-layer AAA that supports various Heterogeneous Network Environment”, that is capable of authenticate in the heterogeneous network environment, and enable UE to acquire IPsec Key that is generated by Cross-layer technology during the handoff procedure, through our AAA-analyzer (authentication, authorization, accounting, AAA), we can provide accounting, control and monitoring of transmitted data in an heterogeneous network environment.