Traffic analysis of media gateway in 3G networks | |
| Author | Thapa, Suveksha |
| Call Number | AIT Thesis no.TC-09-07 |
| Subject(s) | Gateways (Computer networks) Telecommunication Traffic |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Telecommunications, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. TC-09-07 |
| Abstract | Media Gateway acts as a switching node in the 3G core network, connecting calls between disparate communication networks. The gateway resource is used to transcode between the codecs used in the different networks. The Media Gateway has to handle arrivals from different sources, demanding different gateway capacity. The thesis involves study of traffic in media gateway which is considered as a switch connecting calls between the existing 2G network and the newly established 3G networks. Two sources are considered for study, fresh calls between the two networks and calls handed over from 3G networks to 2G due to the limited coverage of 3G network. Simulation model is developed to visualize the variation in the arrival rate offered to the media gateway. Studying the performance of media gateway with the variation in loads offered, is one of the research areas in this thesis. Token based load control mechanism developed, forwarding the arrivals to the gateway in a controlled way so that the number of arrivals handled by the gateway at any load condition is within the limit which the gateway can handle safely. Variation in arrival rate in media gateway is studied in the presence of two type of sources. The load control algorithm adapts the change in the source arrival rate so that the number of calls offered does not overload the gateway. The gateway can handle two sources, with the two sources sharing the gateway capacity or the gateway can be partitioned into virtual media gateways each VMG handling one source. When the two sources share the gateway capacity, variation in arrival rate in one source influences the performance of the second source. Partitioning the gateway into virtual gateway, each source is handled independently by the virtual gateway. The simulation results show the load control mechanism adapts the token rate so that media gateway capacity utilization is below the safe limit defined for the gateway. |
| Year | 2009 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. TC-09-07 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Erke, Tapio J. |
| Examination Committee(s) | Ahmed, Kazi M.;Poompat Saengudomlert |
| Scholarship Donor(s) | AIT Fellowship |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2009 |