LTE模擬器於緊急通訊系統之救災任務導向功能性探討

The Discussion of Disaster-Oriented Functionalities for LTE Simulators in Emergency Communication Systems

蔡昂勳(Ang-Hsun Tsai) ； 蔡宗憲(Chung-Hsien Tsai) ； 陳文彬(Wen-Pin Chen)

《中正嶺學報》 46卷2期 (2017/11) Pp. 1-11

摘要

大多數LTE無線通訊模擬器主要是針對無線存取端的效能進行評估與改善，然而緊急通訊系統還須考量後端延伸的傳輸需求。因此，考量救災通訊系統可能會面臨到的問題及救災情境的通訊需求，根據現有LTE模擬器的比較與緊急救災通訊系統的功能探討，提出五項以救災任務為導向的必要功能，可協助評估與管理救災通訊資源。本論文進一步考量惡劣救災環境並無法提供穩定的延伸網路與核心網路，提出災害導向流量卸載機制的必要性並進行模擬，分析模擬結果顯示具卸載機制的緊急救災通訊系統可提供穩定且低延遲的通訊協調品質，提高救災通訊系統的傳輸率。

關鍵字

災害救援 ； 緊急通訊 ； 長期演進技術 ； 模擬器

並列摘要

The development of an LTE communication simulator is aimed at improving the performance of radio access. However, the backhaul network causes the limitation of communication resources to hamper the rescue operation process. In this paper, we consider the problem of disaster relief communication systems and investigate the requirement for the disaster scenario. Based on the previous LTE simulator comparison and the requirement of emergency communication, we discuss five functionalities to help the network manage overall resource for a disaster relief. Furthermore, due to the limitation of backhaul and core network in bad environment of the disaster relief, we propose a critical disaster-oriented traffic offloading mechanism. The analytical results show that the emergency communication system with traffic offloading mechanism can provide a stable communication quality and the lower latency to improve the overall system throughput.

並列關鍵字

disaster relief ； emergency communications ； long term evolution(LTE) ； simulator