My MS thesis was titled as Aggregate
Traffic Characterisation for Group based Voice/Data Communication for
mobile and aeronautical satellite systems. In such systems uplink capacity is a
potential resource bottleneck.
The prevalence of group-based applications affects the traditional traffic
engineering assumptions and signalling load is also significant. For appropriate
planning and design, most of the assumptions as to the underlying traffic
characteristics must be revised.
The thesis involved investigation of the concepts relating to traffic modelling
and load characterisation of group based voice/data applications such as
push-to-talk and situational awareness applications. This lead to formulation of
an appropriate traffic model for a group based application i-e Push to talk
(PTT). Project involved development of a push-to-talk traffic generator and a
receiver model capable of receiving and processing the generated traffic in
ns-2. PTT traffic generator and receiver were implemented in DVB-RCS network
simulator for network performance analysis of the formulated traffic model.
Finally evaluation of traffic delay statistics and capacity utilization in DVB-RCS
network for voice communication by employing the bandwidth on demand strategies