| Author | Thirapon Wongsaardsakul |
| Call Number | AIT Diss. no.CS-10-01 |
| Subject(s) | Ad hoc networks (Computer networks)
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| Note | A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Technical Science in Computer Science,School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Dissertation ; no. CS-10-01 |
| Abstract | This work presents a novel Session Initiation Protocol (SIP) on the Mobile Ad hoc NET- work (MANET), based on a Peer-to-Peer (P2P) overlay network framework for P2P applications, a Structured Mesh Overlay Network (SMON). SMON uses the concept of Distributed Hash Table (DHT) to form and maintain its mesh overlay network which guarantees a constant lookup time. On top of SMON, we apply P2P SIP to support ex- isting SIP based applications running on MANET. P2P SIP is responsible for maintaining SIP registration and user discovery by distributing pairs of SIP URI and IP address of its users among P2P SIP on the mesh overlay network based on DHT without having to rely on a centralized server. A user initiates a SIP request by sending a single unicast packet to a SIP endpoint rather than broadcasting its request to discover SIP services as adopted by other SIP on MANET approaches. By doing so, the control overhead is remarkably reduced, performance is improved, and higher session setup success ratio is achieved. Furthermore, this work proposes a single P2P overlay network over MANET and a fixed IP network with the aim of supporting terminal mobility even with the absence of centralized servers. SMON is extended to cover the adjoining MANET and fixed IP network through the use of OLSR Overlay Network (OON). Seamless mobility support is one of the main requirements when connecting a MANET to an infrastructured network, allowing a mobile node to roam from a mobile network to the infrastructured network such as the Internet and vice versa without interrupting an ongoing session. Our system is designed to provide terminal mobility support for IP telephony applications in emergency cases. To achieve this goal, we focus on measuring post-dialing setup delay and session setup success and failure ratios between SIP users for an emergency network. The performance of our proposal is evaluated through a number of simulations and experiments. It has been confirmed that P2P SIP on SMON offers the lowest post-dialing setup delay and gives a better call setup success ratio as compared to other SIP on MANET approaches. In addition, SMON together with P2P SIP seamlessly provides SIP terminal mobility support with low handoff delay for both MANET and fixed IP network users |
| Year | 2010 |
| Corresponding Series Added Entry | Asian Institute of Technology. Dissertation ; no. CS-10-01 |
| Type | Dissertation |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Computer Science (CS) |
| Chairperson(s) | Kanchana Kanchanasu; |
| Examination Committee(s) | Crespi, Noel;Teerapat Sanguankotchakorn;Mongkol Ekpanyapong;Landfeldt, Bjorn; |
| Scholarship Donor(s) | Bangkok University; |
| Degree | Thesis (Ph.D.) - Asian Institute of Technology, 2010 |