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.

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