Recent work shows sink mobility can improve the energy efficiency in wireless sensor networks (WSNs). However, data delivery latency often increases due to the speed limit of mobile sink. In practice, some application has strict requirements on delay. This paper focuses on the path selection problem in delay-guaranteed sensor networks with a path-constrained mobile sink. The optimal path is cho...

Data gathering and optimal path selection for wireless sensor networks (WSN) using existing protocols result in collision. Increase in collision further increases the possibility of packet drop. Thus there is a necessity to eliminate collision during data aggregation. Increasing the efficiency is the need of the hour with maximum security. This paper is an effort to come up with a reliable and ...

Mobile wireless multimedia sensor networks (WMSNs), which consist of mobile sink or sensor nodes and use rich sensing information, require much faster and more reliable wireless links than static wireless sensor networks (WSNs). This paper proposes an adaptive multi-node (MN) multiple input and multiple output (MIMO) transmission to improve the transmission reliability and capacity of mobile si...

This paper discusses a buffering strategy for a delay-tolerant multimedia sensor network (DTMSN), whose typical application is video surveillance. In DTMSN, a sensor node observes events around it and stores the data in its own buffer memory. All the data is collected to the sink. Sensor nodes have restrictions on buffer memory as well as battery capacity. The entire data size is much larger th...

In past few years, the domain of data dissemination in wireless sensor networks has been the area of interest to be researched. Whenever there is context of mobile sink groups, the data delivery relates to a complex mechanism because mobile groups have a feature to move in a collective manner. On the basis of previous work, generally the mechanism of flooding is adopted to disseminate the data ...

This paper deals with the use of semantic knowledge to improve the intelligence and autonomous behavior of a mobile robot. A robot can exploit the semantics of its environment to infer new, implicit information. Another interesting possibility is to use semantics for detecting deviations between the real world and what is supposed to be “normal”. For instance, normative semantic knowledge may s...

Energy consumption phenomenon has always been noticed in sink-based wireless sensor networks. This paper explored an energy efficient routing protocol with a mobile sink based on the shortest path data transmission mode. According to the position of the sink node and the common nodes' ID in the network, we can calculate the coordinate value of each node in the wireless sensor network. By compar...

Sink relocation is essential in wireless sensor network since relocating sink can balance the traffic load in the midst of multiple nodes and thereby decrease the miss rate of real-time packets. The main constraint in wireless sensor networks is limited energy supply at the sensor nodes so it is important to deploy the sink at a position with respect to the area of interest; a specific area tha...