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題名 | A Study on Dynamic Queue Buffer Allocation Queuing Scheme in a UMTS Core Network=動態佇列空間配置等候機制應用於UMTS核心網路之研究 |
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作者姓名(中文) | 劉芳萍; 傅振華; 楊千; 張耕華; | 書刊名 | 中正嶺學報 |
卷期 | 39:2(A) 2010.11[民99.11] |
頁次 | 頁33-45 |
分類號 | 448.6 |
關鍵詞 | 動態佇列記憶體配置; 差別性服務封包傳送; 排隊佇列機制; 服務等級; Queuing scheme; Enqueue/dequeue module; Dynamic queue buffer allocation; Differentiated service packet forwarding; |
語文 | 英文(English) |
中文摘要 | UMTS核心網路在3GPP R5以後的規格,為全IP化的分封交換網路架構,以IP為主要通訊協定,並定義了四種的服務等級(QoS)需求應用服務:語音會話、影音串流、聊天室和簡訊背景服務的不同優先順序傳送之特性,本研究提出在UMTS核心網路中的動態佇列緩衝器配置機制去支援不同的封包服務等級處理,我們提出的佇列緩衝記憶體機制是由優先佇列為基礎的進入佇列與加權輪詢佇列送出的機制,對全IP化核心網路的各種不同服務等級封包並藉由不同的邏輯佇列保證空間大小與四組RED參數的設定,進行多組的想定模擬,以期能瞭解這些參數設定對於UMTS差別性等候機制應用動態佇列空間配置運作效能的影響,經模擬結果分析,透過NS2模擬各種方案在不同服務等級的封包在進入與送出佇列時,可以得到很好的效能。 |
英文摘要 | As 3rd Generation Cellular Network (UMTS) systems have evolved into an all-IP stage, packet switching becomes a prerequisite for all UMTS applications within an UMTS core network, where the traffic of UMTS applications consist of four types: conversational, streaming, interactive, and background, each of which has its QoS features and packets transmission priority. In this paper, we propose a dynamic queue buffer allocation (queuing scheme) within an UMTS core network gateway to support differentiated services for packet forwarding among UMTS applications. In the proposed queuing scheme, there are two major modules, the priority-based enqueue module and the weighted round robin dequeue module. Many scenarios are simulated using the platform built on ns2. Based on the simulation results, the performance of UMTS traffic with a high priority always gets a better packet forwarding performance than that of UMTS traffic with a low priority. A differentiated packet forwarding service among UMTS traffic can be found within a UMTS core network. |
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