設計具MEC端到端移動性之5G MANO平台

隨著 5G 行動網路的普及化，低延遲的服務型態需求與日俱增，5G 行動網路整合多接取邊緣運算(Multi-Access Edge Computing, MEC)的需求也一併增加。而歐洲電信標準組織(ETSI)定義了 MEC 整合 5G 網路的建議，同時提出整合 MEC 的 5G MANO，在該架構下可以部署整合 MEC 的網路切片，將 MEC 應用服務部署在距離使用者較接近的地理位置之中，從而降低存取服務的延遲。然而 5G 行動網路的使用者將在地理位置之中不斷移動，造成使用者與 MEC 應用服務的距離發生變化，如此一來便不能保證服務的低延遲。因此，本研究遵循 ETSI 規範，設計 MEC 應用服務端到端移動機制，並整合於具 MEC 部署的 5G MANO 開源專案。此外，本研究亦設計一套機制，處理 MEC 應用服務在 MEC 主機之間遷移後 IP 發生改變的問題，確保使用者能正確地去存取到與其地理位置最接近之 MEC 應用服務。最後於本論中設計實驗，測試本系統可以提供 MEC 應用服務隨著使用者裝置進行移動，同時測試使用者裝置能正確的存取到與其地理位置最接近的 MEC 應用服務。經實驗驗證，本系統可滿足 MEC 應用服務端到端移動的需求。

關鍵字

5G MANO ；網路切片； MEC ；邊緣運算；移動性

並列摘要

With the widespreading adoption of 5G mobile networks, the demands for lowlatency service requirements are increasing.And the integration between 5G mobile networks and Multi-Access Edge Computing (MEC) are growing too. The European Telecommunications Standards Institute (ETSI) has defined recommendations for integrating MEC with 5G networks and has proposed the integration of MEC with 5G Management and Orchestration (MANO) through which MEC application services can be deployed closer to the users' geographical locations, thereby reducing service access latency. However, in 5G mobile networks, users constantly move within different geographical locations, resulting in varying distances between the users and MEC application services. Consequently, ensuring low-latency services becomes challenging. Therefore, this study follows the ETSI specifications and designs a mechanism for MEC application service end-to-end mobility, integrating it into an open-source 5G MANO project free5gmano, which supports MEC deployment. Additionally, this study designs a mechanism to handle the issue of IP address changes after MEC application services migrating between MEC hosts, ensuring that users can correctly access the MEC application service closest to their geographical location. Finally, experiments are conducted to test the system's capability to provide MEC application service mobility as User Equipments(UEs) move, as well as to verify that UEs can accurately access the MEC application service closest to their geographical location. The experimental results confirm that the system satisfies the requirements for MEC application service end-toend mobility.