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Event-driven based traffic consideration in Wireless Sensor network (WSN) is a new area of research in the field of WSN. A few media access control (MAC) protocol has been proposed to handle the variety of both light and heavy traffic load situation such as RC-MAC which allows switching of modes to handle different traffic loads. In RC-MAC, nodes consume extra energy to stay awake like Receiver Initiated...
In this paper, we investigate how the performance (i.e., the average message delivery delay) of IEEE 802.15.4-based WSNs is affected by the heterogeneity of wireless communication ranges of sensor nodes. An appropriate control of the wireless communication range of a sensor node should be beneficial in terms of reduced power consumption of the sensor node and performance improvement caused by reduced...
The lifetime of Energy-harvesting Wireless Sensor Networks (EH-WSNs) is ideally infinite. However, these networks are costly to implement, and unreliable due to unstable ambient energy. Consequently, Hybrid Wireless Sensor Networks (HWSNs) consisting of Energy-harvesting Sensor Nodes (EHSNs) and Battery-powered Sensor Nodes (BPSNs) gain the spotlight. Nevertheless, HWSNs confront the volatility of...
The Internet of Things is envisioned to consist of many devices that are all interconnected. In order to achieve this goal, efficient networking techniques are needed that can connect low-power devices to the rest of the world. This paper presents a new protocol that enables sensor networks to efficiently communicate with a base station. The proposed JetNet protocol utilizes a combination of time...
Radio frequency (RF) recharging can extend maintenance-free operation of wireless sensor networks. However, the period between recharging is limited by the distance between the most distant sensor node and the master which sends out recharging pulses. To increase this period, we propose a scheme in which nodes are logically grouped into circular zones centered at the master, so that nodes in a given...
Link asymmetry, arisen from varying coverage distance between two adjacent nodes, poses a real challenge for designing efficient receiver initiated MAC protocol for extremely low duty-cycled wireless sensor networks (WSN). One of the viable solution to overcome this limitation is to exploit the benefit of cooperative communication. In this paper, we propose a cooperative MAC protocol for WSN that...
In this paper we propose a Multichannel based X-MAC protocol (MX-MAC) with the objective of eliminating hidden node problem of existing asynchronous X-MAC protocol, as well as reducing average packet delay. To address the hidden terminal problems, multi channel enables a receiver to send a preamble with next receiver ID on the control channel to notify its neighbors that an ongoing reception is in...
Achieving energy efficient wireless communication is the most pursued goal in Wireless Sensor Networks (WSNs), as energy consumption is typically a major barrier to long term applications. In recent years, ultra-low power Wake-up Receivers (WuRx) have emerged, enabling pure asynchronous wireless communication that eliminates energy waste due to idle listening. However, to achieve a significant increase...
In this paper, we propose a novel joint routing and medium access control (MAC) protocol with traffic differentiation, based on quality of service (QoS) for wireless sensor networks (WSNs). This is referred to as joint routing and MAC (JRM) protocol. By leveraging the classical layered approach and combining routing and MAC layer functions, the proposed JRM protocol achieves a solution for energy...
Overhearing and idle listening are two primary sources for unnecessary energy consumption in wireless sensor networks. Although introducing duty cycling in medium access control (MAC) reduces idle listening, it cannot avoid overhearing in a network with multiple contending nodes. In this paper, we propose an event-triggered sleeping (ETS) mechanism for synchronous duty-cycled (DC) MAC protocols in...
When a person is performing repetitive daily activities (e.g. walking, cycling etc.) with equipped motion sensor such as accelerometer, its measured motion signals can go up or down and fluctuates in a periodical manner. In addition, recent researches indicate that the Received Signal Strength (RSS) through wireless channels between on-body sensors and the hub in a Wireless Body Area Network (WBAN)...
In a smart grid environment, wireless sensor networks (WSNs) perform a significant role in supervising and taking control decisions based on the data transferred from source to destination. The work in this paper is aimed to develop a cross-layer multi-channel MAC (CMCMAC) protocol for interference mitigation between ZigBee and WiFi operating in common 2.4GHz frequency band. In this protocol, to avoid...
Energy in MAC protocols becomes an important research issue because sensor nodes are mostly take their power from batteries that are not easily to be recharged. The aim of this paper is to improve MAC protocol in underwater sensor networks by enhancing the performance of ALOHA protocol, which considered as one of the most popular MAC protocols. This work proposed a method for preserving the energy...
Energy efficiency is one of the important critical metrics during protocol design in Wireless Sensor Networks (WSNs). Existing Medium Access Control (MAC) protocols do not take the initial node power into consideration, which may result in unfair power consumption, especially for low-power nodes. This paper presents an energy-efficient dual-layer MAC protocol with adaptive layer duration for WSNs...
The existing detection methods of greedy behavior in MAC protocol are not suitable for wireless sensor networks due to their high energy cost and complex computing. In this paper, we design a novel hierarchical MAC protocol greedy behavior detection framework for cluster-based wireless sensor networks, and propose a greedy behavior detection algorithm based on a hypothesis testing model. Furthermore,...
Network architectures that exhibit cognitive behavior, such as self-adaptation and reconfiguration, are becoming extremely popular paradigms for the future heterogeneous wireless networks. Towards this direction, in this paper, we leverage on the component-based approach to achieve modular cross-layer design and propose a protocol stack with adaptive features that allows autonomous decision-making...
In this paper we propose HAMA, i.e. a herd-movement adaptive medium access control protocol suitable for wireless sensor networks with mobile nodes. The specific focus of HAMA is wildlife monitoring applications, in which network protocol is required to adapt to the movement patterns of herds to make the communication more energy-efficient and reliable. The protocol is an extension of preamble sampling...
Modelling data flow in wireless networks is a complicated task, since network dynamics are frequently unpredictable. The situation is even harder in the case of Wireless Sensor Networks (WSNs). Thus, many researchers instead of modelling the microscopic behavior of each single node, they choose to model traffic flow macroscopically. Fluid dynamic principles provide researchers with a powerful tool...
WSNs are composed of sensors that collect, process, and send data to a sink. To communicate, sensors use a shared medium. Thus, a robust MAC layer protocol has to be implemented for transmission management. This paper presents a QoS based WSNs MAC protocol that ensures service differentiation and less energy consumption. It is based on a duty-cycle approach that combines TDMA and CSMA/CA schemes....
This paper presents a time division multiple access MAC protocol that is specifically designed for applications requiring periodic sensing of the sensor field. Numerical analysis is conducted to investigate the optimum transmission scheduling based on the signal to interference-noise-ratio (SINR) for ground level propagation model applied on wireless chain topology. The optimised transmission schedule...
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