第七號信號系統以分時多工網路及IP網路承載時的效能比較與分析

THE PERFORMANCE COMPARISON AND ANALYSIS OF TDM-BASED AND IP-BASED SS7

耿德惠(Te-Hui Keng)

指導教授 ： 陳建華

大同大學/電機資訊學院/通訊工程研究所/碩士(2007年)

摘要

近幾年來，第三代行動通訊系統在全世界各地積極的普及了起來。在台灣，取得第三代行動通訊系統執照的五家業者也已經在2005年底全數投入營運。
相對於第二代行動通訊系統而言，第三代行動通訊系統帶來的不僅是更快的數據通訊速率，對於傳統的電路交換核心網路，在處理語音接續的第七號信號的傳送介質上，更是前所未有的採用了IP傳送的方式。
在本論文中，我們學習了數個有關於在電路交換核心網路的控制信號傳送方式，並研究了第七號信號分別以TDM及IP兩種不同的技術傳送時，對於訊息格式(data format)及故障復原(failover)上的不同之處。同時我們以實作的方式，量測及分析第七號信號分別以TDM及IP兩種傳送層傳輸時，對於訊息來回時間(Round Trip Time)上差異。

關鍵字

串流控制傳輸協議 ； 基於IP技術的第七號信號系統

並列摘要

In recent years, the 3rd generation mobile systems (3G) have been widely deployed around the world. Five 3G licensed firms in Taiwan have already started their business operations in the end of 2005.
Compared to the Global System for Mobile communications (GSM), 3G brings faster data transmission rate in packet-switched network. In addition to that, 3G applies IP transport in processing Signaling System No. 7 (SS7) instead of traditional TDM-based SS7 in the circuit-switched network.
The purpose of this thesis is threefold. First, we focus on two transport layers which are applied to circuit-switched network, TDM-based and IP-based SS7. Second, we study the data format and failover mechanism. Third, we implement a testing environment to measure and analyze the Round Trip Time (RTT) of signaling messages and to compare the performance differences.

並列關鍵字

SCTP ； IP-based SS7

參考文獻

[2] Randall R. Stewart and Qiaobing Xie, Stream Control Transmission Protocol (SCTP) A Reference Guide, Addison-Wesley, 2002.

[5] Tero Ojanpera and Ramjee Prasad, Wideband CDMA for Third Generation Mobile Communications, Artech House, 1998.

[7] The National Communications Commission, http://www.ncc.gov.tw

[11] ITU-T Recommendation Q.701, Functional Description of the Message Transfer Part (MTP) of Signaling System No. 7.

[12] ITU-T Recommendation Q.702, Signaling Data Link.