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The Study of Mechanism Transferring SS7 Signaling in 3G Core Network Circuit Switched Domain

Author: YangYanBo
Tutor: HuangZaiLu
School: Huazhong University of Science and Technology
Course: Communication and Information System
Keywords: SIGTRAN No.7 signaling 3G core network Circuit switched domain
CLC: TN929.5
Type: Master's thesis
Year: 2004
Downloads: 247
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Abstract


UMTS (Universal Mobile Telecommunication System) in full compliance with the the 3GPP standards developed . Recommended 3GPP R4 version of the agreement to develop the 3G core network architecture based on IP bearer network , the R4 version of the core network is divided into two parts of the circuit switched domain and packet switched domain , circuit-switched domain processing language business , packet switched domain processing data business. Although the circuit-switched bearer network domain IP network interface between circuit switched domain entity (G) MSC, VLR, HLR No.7 signaling over IP networks send No.7 signaling become a problem that must be addressed . So far , for the No.7 signaling transmission over IP networks , but some agreement , but has not yet offered a full implementation of the framework . No.7 signaling have very strict requirements on the underlying signaling bearer , the traditional IP network itself unable to meet these requirements , it is necessary to IP-based No.7 signaling bearer optimized . No.7 signaling IP-based bearer M3UA, SCTP and IP three agreements , No.7 signaling hosted IP-based optimization is the comprehensive optimization of these three agreements . In this paper, to consider the quality of service and security issues of the IP layer , IP quality of service and security solutions , and then synthesize the overall optimization of the IP layer ; SCTP ??layer and put forward suggestions for improvement of the agreement , including the SCTP coupling automatic recovery mechanism improved SCTP ??congestion control mechanism of improvement as well as the realization of the fault-tolerant capabilities of SCTP ??association ; given ASP redundant configuration examples for M3UA layer characteristics ; No.7 letter in IP networks set up so that the the network two programs , and compare both scenarios . Finally, M3UA, SCTP and IP layer layers optimization method based on comprehensive consideration of layers of contact and mutual influence of No.7 signaling in 3G core network circuit switched domain transfer overall implementation IP network transmission No.7 signaling a useful attempt .

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