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Brokers are critical elements for many publish and subscribe (pub/sub) systems. They are dedicated devices with large computation and storage capacities, but they could suffer from scalability problems when comes to actual large-scale implementations in wireless sensor networks. Inspired by the recent virtual MIMO concept for wireless sensor networks, this(More)
Wireless sensor networks (WSNs) are an enabling technology of context-aware systems. The Internet of Things (IoT), which has attracted much attention in recent years, is an emerging paradigm where everyday objects and spaces are made context-aware and interconnected through heterogeneous networks on a global scale. However, the IoT system can suffer from(More)
Conventional wireless home automation networks (WHANs) incorporate embedded wireless sensors and actuators that monitors and control home living environment. WHAN's primary goal is to maintain user comfort and efficient home management. Conventional WHAN lacks “intelligence” in terms of managing compound human comfort, and it deals with multitude of human(More)
This paper proposes a distributed wireless sensor network (WSN) data stream clustering algorithm to minimize sensor nodes energy consumption and consequently extend the network lifetime. The paper follows the strategy of trading-off communication for computation through distributed clustering and successive transmission of local clusters. We present an(More)
Connectivity Maintenance for mobile nodes is an important issue in Ad-hoc Wireless Sensor Network application like Wildlife Monitoring wherein data needs to be constantly captured and analysed to track and study animals. The random nature of the animal movement makes the task of tracking quite challenging. The work presented here attempts at addressing and(More)
Multi-Input Multi-Output (MIMO) techniques can be used to increase the data rate for a given bit error rate (BER) and transmission power. Due to the small form factor, energy and processing constraints of wireless sensor nodes, a cooperative Virtual MIMO as opposed to True MIMO system architecture is considered more feasible for wireless sensor network(More)
With the significant growing of multi-service traffic demands in Next Generation Networks (NGNs), there is a need for reducing the overall energy consumption due to the environmental impact and potential economic benefits. While most existing green networking approaches take no or less consideration on the service resilience aspect. There is an inherent(More)
The role of Internet of Things (IoT) in facilitating connectivity of the wireless sensor network (WSN) to the remote server or cloud over the Internet encourages the formation of a highly complex system with significant potential. This enable the interaction between the physical and virtual sensor clouds resulting in the ability to allow for flexibility(More)
The paper discusses the development of wireless microclimate sensor. The sensor forms the generic component of a microclimate wireless sensor network (WSN). The network is based on IEEE 802.15.4 low power wireless protocol supported by ZigBee stack. The key objective of the network is to support remote monitoring and management of large orchards. The(More)