Abstract
Wireless sensor network (WSN) is considered as the enabling technology to bridge the gap between the physical and digital world. Some of the applications environments of WSN require a mobile sink to operate in the sensor field where delayed and/or partial data delivery might lead to inappropriate conclusions and thus require high quality of service in terms of latency and packets delivery ratio. Majority of existing mobile sink based data dissemination schemes aim to prolong network lifetime whereas few schemes improve the data delivery performance by employing multiple mobile sinks which add to the hardware and operating cost. In this paper we propose a virtual grid based data dissemination (VGDD) scheme that aims to optimize the tradeoff between network lifetime and data delivery performance while adhering to the low cost theme of WSN. Using the virtual structure, the proposed VGDD scheme follows a set of rules to disseminate sink's mobility updates in an energy efficient manner thereby maintaining nearly optimal routes. Furthermore, to cope with speed's variation of mobile sink, VGDD makes use of appropriate forwarder nodes for guaranteed data delivery. Simulation results reveal improved data delivery performance in terms of latency and data delivery ratio compared to existing work.
Highlights
Wireless sensor network (WSN) is considered as the enabling technology to bridge the gap between the physical and the digital world
The following subsections describe the performance of virtual grid based data dissemination (VGDD) in terms of the three metrics under different network dynamics
Compared to our VGDD and Virtual Circle Combined Straight Routing (VCCSR), the overall success ratio of Data-Driven Routing Protocol (DDRP) is very low as a high number of packets are dropped due to expiry of TTL field while chasing the mobile sink
Summary
Wireless sensor network (WSN) is considered as the enabling technology to bridge the gap between the physical and the digital world. Network-wide dissemination of sink’s location updates helps to improve the data delivery performance to the mobile sink thereby facilitating dynamic routes adjustments. In the virtual infrastructure based data dissemination schemes, a set of designated nodes scattered in the sensor field are only responsible to keep track of sink’s location. VGDD introduces several communication rules for dissemination of sink’s topological updates that lead to least network control overheads while preserving nearly optimal data delivery routes. Nodes close to the centre of the cells are appointed as cell-headers, which are responsible for data collection from member nodes within the cell and route the data to the mobile sink using the virtual backbone network The goal behind such virtual structure construction is to minimize the routes readjustment cost and improve the data dissemination performance to the mobile sink.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
