Tag Archives: Underwater Sensor Networks

07/09/2016 – Talk by Mohsin Jafri

Title:  Simulating Depth-based routing in Underwater Networks
Time: 13:45
Location: Meeting room
Type: Research Result
Speaker: Mohsin Jafri
Abstract: In this talk, I will briefly discuss my ongoing research activities. I will present the implementation of a simulator for
studying Depth-Based Routing (DBR) in Underwater Wireless Sensor Networks (UWSNs). One of the major challenges for DBR is the configuration of a parameter called “holding time” which influences the network throughput, response time and energy consumption. I will show how it is possible to use the simulator to support the validation of a choice for a given value of the holding time, as well as other network parameters. The presentation will also discuss the important features that distinguish the implemented simulator with respect to the other ones available in the scientific literature and its validation against previous simulation models or measurements.

11/11/2015 – Talk by Moshin Jafri

Title:  Underwater Wireless Sensor Networks: Applications, Advances and Research challenges
Time: 13:00
Location: Meeting Room, building Zeta
Type: Survey
Speaker: Moshin Jafri
Abstract: Underwater Wireless Sensor Networks (UWSNs) have several applications such as sea mine detection and seismic monitoring. UWSNs consist of a large number of sensors and vehicles, deployed to transmit sensed data to the base station. They monitor swarms of underwater vehicles in environmental and military applications by exploiting their reconfigureability. In this talk, we discuss about the organizational architecture of UWSNs and the state of the art of various networking facets related to UWSNs. This talk serves as a summary of existing protocols, providing inspiration for the growth of underwater networks. We also outline the recent advancements in this area by focusing on the lower strata of the communication stack, and envision future trends. Current research ranges from low-power algorithms and modulations to energy-aware routing and MAC protocols. We highlight the key challenges such as high error rate, low network throughput and high energy consumption for data transmission. Furthermore, high propagation delay, Doppler shifts and time-varying multi-path effects constitute major research subjects, which require reliable communication systems in order to coordinate multiple devices, either mobile or stable.