ABSTRACT
SIMULATION BASED INVESTIGATION OF AN IMPROVEMENT
FOR FASTER SIP RE-REGISTRATION
TANRIVERDi, Eda
M.Sc., Department of Electrical and Electronics Engineering
Supervisor: Prof. Dr. Semih BiLGEN
July 2004, 78 pages
In this thesis, the Session Initiation Protocol (SIP) is studied and an improvement
for faster re-registration is proposed. This proposal, namely the &ldquo / registration &ndash / activation&rdquo / , is investigated with a simulation prepared using OPNET.
The literature about wireless mobile networks and SIP mobility is reviewed.
Conditions for an effective mobile SIP network simulation are designed using message
sequence charts. The testbed in [1] formed by Dutta et. al. that has been used to observe
SIP handover performance is simulated and validated. The mobile nodes, SIP Proxy
v
servers, DHCP servers and network topology are simulated on &ldquo / OPNET Modeler
Radio&rdquo / . Once the simulation is proven to be valid, the &ldquo / registration &ndash / activation&rdquo / is
implemented.
Different simulation scenarios are set up and run, with different mobile node
speeds and different numbers of mobile nodes.
The results show that the re-registration delay is improved by applying the
&ldquo / registration &ndash / activation&rdquo / but the percentage of improvement depends on the
improvement in the database access delay in the SIP Proxy server.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12605210/index.pdf |
| Date | 01 July 2004 |
| Creators | Tanriverdi, Eda |
| Contributors | Bilgen, Semih |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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