| CACT |
Networking Research |
Sania Salahuddin
Doctoral student, Computer Science
Research
Performance Analysis of Audio Streaming server using High Resolution Traffic Generator
The traffic generator generates packet traffic of prescribed types, multiple streams of different packet lengths and inter-packet delay times based on mathematical models of measured traffic. A network level end-to-end performance evaluation tool uses traffic generators along with devices that transmit, receive and log time-stamped packets to assess device's ability to support a given traffic load. To this end in terms of packet loss, delay and jitter resulting from measurements of the device under test is tabulated. The objective of this research was to evaluate the effect of queueing delay on the performance of audio streaming services. Experiments using high resolution traffic generator constructed from Beowulf cluster computer and an audio source were performed.
Connectivity Problem in Wireless Adhoc Network
Connectivity of the nodes of the wireless adhoc network is an important performance metric in the problem of communicating with proper authority. One can say that the network is fully connected if any active node can communicate with any other active node possibly using other active nodes as relays. The information exchange among collaborating nodes become the dominant form of communication. So, connectivity of the nodes is not only needed to report geographical origin of events but very critical in many other aspects of adhoc networks, like routing in large scale ad-hoc network or studying the coverage properties of the network. The objective of our research is to examin the connectivity problem on a grid network.The key idea of our approach is that the source node distributes the copies of the data to a few intermediate nodes located within the transmission range to the source node. If one of the intermediate or the source node gets closer to the destination node, the data is transferred to the destination. We assume each node is capable of unit radius transmission and nodes which are within this transmission range of the source can directly receive the data. Nodes that can so communicate are term adjacent nodes to the source. Transmission radius is assumed to be proportional to the Euclidean distance between the source and the nodes. Random positions of the nodes in the grid are defined by their Euclidean coordinates. We first solve the connectivity problem between the source and destination node. If there exists such a connection, the complete path from source to destination is determined.Publications, Presentations and Report