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ZigBee is a networking standard for low power, low data-rate, resource constrained networks. It provides network and upper layer services for LR-WPAN, cyber physical systems, industrial sensor networks, smart grids, home automations, etc. The routing layer uses the tree based routing protocol wherein only parent-child relationship are considered for routing, ignoring neighbor nodes. This results in...
The quality of service (QoS) in Smart Grid (SG) communications has a significant importance on emerging SG applications. Wireless sensor networks (WSNs) were considered as a compatible choice to fulfill this issue. In fact, WSNs could be widely used in a wide range of smart grid applications because they have been successfully adopted in several critical areas. Unlike other WSN applications, SG requires...
Wireless Sensor Networks (WSNs) have been proposed for various monitoring applications including environmental, industrial, military and health care. The use of WSNs with cluster-tree topologies for such applications solves the limited coverage issue of the wireless sensor devices and allows them to be deployed in wider area. WSNs with cluster-tree topologies suffer from various problems including...
Multi-hop harvested wireless sensor networks (HWSN) face two challenges. First, each node must control its energy consumption through duty cycle adaptation to spend less energy than nodes obtain from the environment. Second, nodes must efficiently adapt topology so that packets use the most efficient paths towards the sink. In this paper, we address the challenges in the specific context of beacon-enabled...
Wireless Sensor Networks (WSNs) are anticipated to become the preferred tools of choice for monitoring and controlling power utility assets in the smart grid due to their versatility. However, in some smart grid monitoring applications, data generation rates could fluctuate rapidly due to the sudden occurrence of critical faults or failures in the monitored equipment. As a consequence, critical data...
IEEE 802.15.4 that is standard for Wireless Sensor Network (WSN) has been becoming prominent due to its wide variety of real time applications such as medical care, vehicle traffic control, embedded, etc. But for proper working of these sensor networks, certain performance parameters should be taken into consideration. We are analyzing three parameters namely-throughput, loss rate and average delay...
In critical infrastructure monitoring applications, the packet arrival rates of a Wireless Sensor Network (WSN) may abruptly increase when cascaded failures are observed in the monitored environment. WSNs with cluster-tree topologies could experience excessive delays because of this increase in packet arrival rates. Therefore, there should be an optimum operating point in the network where the network...
Certain Wireless Sensor Network (WSN) applications such as patient monitoring, smart grid, and equipment condition monitoring require accurate estimation of specific WSN parameters such as end-to-end delay, reliability and power consumption. The estimation of these parameters calls for an accurate and lightweight WSN model that is suitable for the low processing capabilities of sensor nodes. In this...
In Wireless Sensor Network (WSN) based smart grid condition monitoring applications (e.g., the detection of a Partial Discharge (PD) event in high voltage transformers), network traffic dramatically increases when cascaded faults occur. Reliability and delay are among the main issues that are affected by this increase in the traffic rates. In this paper, we present an adaptive Quality of Service (QoS)...
The simulation analysis is important approach to developing and evaluating the systems in terms of development time and cost. This paper demonstrates the application of Time Division Cluster Scheduling (TDCS) tool for the configuration of IEEE 802.15.4/ZigBee beacon-enabled cluster-tree WSNs using the simulation analysis, as an illustrative example that confirms the practical applicability of the...
IEEE 802.15.4 is a standard to address the need of low cost, low power consumption and low data rate low-rate wireless personal area network (LR-WPAN) which is widely used in remote metering, building automation, smart tags, industry control and etc. The IEEE 802.15.4 protocol specifies the physical layer (PHY) and medium access control (MAC) sub-layer for LR-WPAN.Due to the MAC protocol is addressed...
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