BITS Faculty Publications
Permanent URI for this communityhttp://localhost:4000/handle/123456789/1867
Browse
2 results
Search Results
Item Energy Efficient Mobile MAC Protocol with Mobility Vector for Neighbor Selection in Wireless Sensor Networks(Praise Worthy Prize, 2016) Gudino, Lucy J.Scenarios where the sensors are mobile, introduce a new set of issues to be addressed in the design of their protocol stack. The layers that get affected the most are the Medium Access Control(MAC) and the network layer. This paper presents a multichannel mobile MAC protocol with Mobility Vector for neighbour discovery. Static nodes in the network use sleep wake pattern to conserve energy. The mobility vector information such as direction and speed, along with the nodes residual energy are used to select a neighbour that can provide maximum connection retention time. Mobility vector information is also used to wake those neighbours that are in the trajectory of the mobile node movement. The proposed multichannel protocol guarantees an interference-free communication. The proposed approach is simulated and compared against other similar MAC protocols, in terms of data-rate, control overhead and energy. Experimental results indicate that the multi-channel MAC gives better results when compared to single channel MAC protocols. Implementation of the proposed approach is tested using Berkley motes and by using custom designed mobile node.Item Cross-layer protocol stack development for three-dimensional underwater Acoustic Sensor Network(Elsevier, 2017-08) Gudino, Lucy J.There is a huge interest in the research community to explore the ocean using sensor networks. Various factors such as resource constraints of sensor networks, requirements of applications, properties of underwater acoustic communication and features of ocean environment have a big impact on the design and development of the network architecture as well as the protocol stack. For a long-term deployment of a network, energy efficiency is the most important design criteria. For achieving energy efficiency and overall improvement in network performance, a new approach of cross-layer protocol stack design is being explored by researchers. In this work, a cross-layer protocol stack has been developed for a three-dimensional Underwater Acoustic Sensor Network (UASN) that can be used for a long-term monitoring of ocean column. The proposed stack with cross-layer design combines physical layer, data link layer, network layer protocols along with time-synchronization, clustering and power level management. This protocol stack has been successfully implemented on the UnetSim which is an open source underwater network simulator. In this paper, the details of protocol stack, it's implementation on UnetSim along with results and analysis of results have been provided