Wireless sensor network (WSN) is considered as the enabling technology to bridge the gap between the physical and digital world.\nSome of the applications environments ofWSNrequire a mobile sink to operate in the sensor fieldwhere delayed and/or partial data\ndelivery might lead to inappropriate conclusions and thus require high quality of service in terms of latency and packets delivery\nratio. Majority of existing mobile sink based data dissemination schemes aim to prolong network lifetime whereas few schemes\nimprove the data delivery performance by employing multiple mobile sinks which add to the hardware and operating cost. In this\npaper we propose a virtual grid based data dissemination (VGDD) scheme that aims to optimize the tradeoff between network\nlifetime and data delivery performance while adhering to the low cost theme of WSN. Using the virtual structure, the proposed\nVGDDscheme follows a set of rules to disseminate sink�s mobility updates in an energy efficientmanner therebymaintaining nearly\noptimal routes. Furthermore, to cope with speed�s variation of mobile sink, VGDD makes use of appropriate forwarder nodes for\nguaranteed data delivery. Simulation results reveal improved data delivery performance in terms of latency and data delivery ratio\ncompared to existing work.
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