新一代無線網路支援DiffServ 並以服務品質為基礎的MPLS 流量工程管理機制 ;QoS Support for DiffServ-Aware MPLS Traffic Engineering in the New Generation Wireless Network

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Title:	新一代無線網路支援DiffServ 並以服務品質為基礎的MPLS 流量工程管理機制;QoS Support for DiffServ-Aware MPLS Traffic Engineering in the New Generation Wireless Network
Authors:	林怡君;Yi-Chun Lin
Contributors:	資訊工程研究所
Keywords:	差異性服務;標籤;流量工程;移動性;標籤交換網路;Traffic Engineering (TE);Label;MPLS;DiffServ;mobility
Date:	2003-06-24
Issue Date:	2009-09-22 11:33:15 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	差異性服務(DiffServ) 與標籤交換網路(MPLS) 流量工程(TE)的整合性架構，在新一代無線中，提供了一個終端對終端的品質保證服務。不同種類的封包，在進入網路時會依照封包的特性、延遲容忍度、服務品質需求等，被區分及標記成不同的等級(priority)。之後，標籤交換網路的邊界路由器，會根據不同的等級的封包、及其所需的資源進流量工程管理，以達到提升服務、擴大網路效能的目的。在這篇論文中，我們設計了一個階層式系統架構：底層的接取網路及上層的核心網路。接取網路中的邊界路由器，負責處理行動用戶的移動性問題；核心網路中的邊界路由器，則致力於有效率地管理系統資源。一個新的連線需求，主要會包含兩部分：資料的等級、所需的頻寬。當系統負載過量時，較高等級的資料可以佔用原先被指定給低等級資料的頻寬，以滿足其較高的服務品質需求。此一架構是一個分散式的系統架構，具有良好的擴張性，並可藉由流量管理的方式，提供終端對終端服務品質的保證。實驗模擬環境及相關結果顯示，在我們的系統架構下，較高等級的資料可以獲得較好的保障，此流量管理機制，也大大地提升系統資源的使用率，創造較高的系統效能。 The DiffServ-aware MPLS Traffic Engineering scheme offers an attractive way to ensure end-to-end QoS commitments for future mobile IP networks. Packets along the DiffServ network will be classified to different priority levels according to the traffic profiles. Afterwards, the Label Edge Router in the MPLS network will check the incoming packets, control the network resources, and perform the traffic engineering. This thesis proposes a two-layer hierarchical system with corresponding Edge Router Agents (ERAs). ERAs handle the localized mobility in the access network layer, and ERAs in the core network layer perform the Shortest Distance with Preemption Algorithm (SDPA) to deal with the resource management. The proposed scheme offers a scalable, multi-service solution with Quality of Service (QoS) guarantees for future IP wireless networks. The simulation results validate the better performance to higher-priority flows with higher throughput and lower transmission delay. The system utilization is maximized through the proposed TE-enabled network.
Appears in Collections:	[Graduate Institute of Computer Science and Information Engineering] Electronic Thesis & Dissertation

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