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IMS functional architecture overview

IMS functional architecture overview

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Fig. 1. IMS functional architecture overview
Table 1 . List of interoperability tests carried out over the testbed
Fig. 3. The IMS testbed architecture 
Fig. 4. Testbed registration procedure 
+8 Table 4 . Overhead (application layer payload) associated to each of...
Framework for IMS Service Scenario Implementation
Conference Paper
Full-text available
  • May 2010
This paper presents an experimental framework for implementation of an IMS/NGN reference service scenario by means of open source software. Multiple service enablers are deployed to build this service scenario. Interoperability tests between the deployed IMS entities and user equipment are carried out, as well as performance measurements of signali...
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Context 1
... also inherits the tradi- tional telecommunications experience concerning guaranteed QoS, flexible charging mechanisms, etc. [9]. An overview of the IMS functional architecture based on 3GPP, ETSI TISPAN, and ITU specifications is presented in Figure 1. ...
Context 2
... analyzing Figure 1, one may observe that IMS integrates and develops some ideas from the Intelligent Network (IN) concept. For instance, in the IN concept, the logic of the service (e.g., a toll free or 800 number) was separated from the core switching sys- tem (TDM switches) by means of an external node called the service control point (SCP). ...
Context 3
... better validate IMS operation in close-to-real environment, we have started the integration of the IMS prototype with the EXTREME Testbed® [32]. In particular, we connected the UE to the deployed IMS platform through two transport technolo- gies, namely UMTS/HSDPA and WLAN IEEE 802.11, as illustrated in Figure 10. The in-lab real-time UMTS network consists of a real Node B (Siemens NB8860) with WCDMA and HSDPA functionalities, a protocol emulator (Tektronix K1297- G35) of the RNC and the PS core network (including SGSN, GGSN, and a subset of the functionalities of the HLR), and a PC acting as IP gateway to external networks [33]. ...