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LTE-M, which is an abbreviated version of LTE-MTC(Machine Type Communication) can be said to have a variety of applications, including a large number of heterogeneous interconnection of large-scale network equipment. One of the most prominent problems is that the machines may have a large amount of access requests in a short time, which can easily lead to network congestion. At present, the contention-based...
The validity of sensed data that labels the change events plays the most important role in the accuracy and reliability of the Internet of Things (IoT)-based Wireless sensor network (WSN) applications to assure data quality for perfect decision making. In this study, we suggested and implemented a sensor data validation approach based on adaptive threshold for real-time IOT/WSN sensor node level....
Wireless Body Area Network (WBAN) is an excellent technology for chronic healthcare monitoring applications. In which, sensor nodes are connected wirelessly in, on or near the human body and also responsible for Data Collection, Data Processing and Data Transmission. Sensor nodes are generally powered by small batteries with sturdily restricted energy resources, so minimizing the energy consumption...
Reverse proxies are key performance elements of a content distribution network (CDN) and operate as intermediaries between client and upstream (or origin) server traffic. A typical reverse proxy server aims to distribute user workload, more or less equally, among multiple upstream servers. To keep the pace with the growing demand for content, CDNs regularly expand their capacity by adding extra upstream...
In this paper, we propose a new Medium Access Control (MAC) protocol for Wireless Sensor Networks (WSNs) called MMSMAC (Multi-Mode Sensor MAC protocol), which can operate and switch among three modes: synchronous, asynchronous, and hybrid, according to the application requirements. In the synchronous mode, MMSMAC organizes the sensor nodes under even and odd clusters. Each sensor node has its own...
Wireless Sensor and Actor Networks (WSANs) have greatly enhanced the existing Wireless Sensor Network (WSN) by its heterogeneous node structure. WSAN is a collection of static sensors and mobile actors. The actors are active elements with high processing, communication capabilities, and less constrained to energy resources than passive sensors. An actor performs actions in the event area based on...
Wireless mesh network (WMN) is a peculiar type of growing technology that can alter the world more effectively in the coming decades. Multicast routing in mesh networks is the distribution of data from a single source to multiple destinations or multiple sources to multiple destinations through the intermediate nodes. There can be many numbers of intermediate nodes between source and destination....
Wireless Sensor Networks (WSN) plays a vital role in the modern communication mechanism. These are more vulnerable to attacks due to their basic limitations such as communication distance, memory, processing, throughput and power. In this paper we analyze communication delay and energy consumption of a WSN. We propose a Novel Dynamic Reconfigurable Network Monitoring Node (DRNMN), which controls the...
In Remote Sensor Arrange deferral and vitality are vital limitations. It is watched that postponement, parcel conveyance proportion, vitality, rate transmission issues are created when a bundle is sent from sources to goal. This paper manages issues of postponement and vitality. Also, it deals with a Course choice paradigm which depends on least hub postponement and vitality utilization. At the point...
Smart grid uses an advanced metering infrastructure to create a two-way communication network between smart grid components and machine-to-machine communications have a great potential to implement this communication network. In this paper, we propose a one-layer aggregation-based machine-to-machine architecture for advanced metering infrastructure architecture of smart grid and focus on finding the...
Data collection and transmission are the fundamental operations of Wireless Sensor Networks (WSNs). A key challenge in effective data collection and transmission is to schedule and synchronize the activities of the nodes with the global clock. This paper proposes the Bandwidth Efficient Hybrid Synchronization Data Aggregation Algorithm (BESDA) using spanning tree mechanism (SPT). It uses static sink...
Many applications of wireless sensor networks (WSNs) need to balance multiple yet often conflicting performance requirements such as high energy efficiency, high throughput, low delay and low loss. Finding appropriate WSN parameter configuration to achieve the best trade-off requires in depth understanding of the joint effect of key parameters residing at different layers on the performance. In this...
Wireless Sensor Network (WSN) is a collection of large number of sensors with low-power transceivers effectively used for collecting data in various applications like environmental monitoring, healthcare, civil and military applications. Efficient data transmission protocols are required to reduce transmission delay and energy of sensors to increase lifetime of sensor nodes. Recent researches in WSNs...
Wireless Sensor Networks (WSNs) are used for monitoring and data collection purposes. A key challenge in effective data collection is to schedule and synchronize the activities of the nodes with global clock. This paper proposes the Synchronized Data Aggregation Algorithm (SDA) using spanning tree mechanism. It provides network-wide time synchronization for sensor network. In the initial stage algorithm...
Power conservation is a critical issue in wireless networks as the mobile devices are battery constrained and therefore researchers have been constantly working for saving power by following standard Type I, II and III sleep scheduling algorithms. In this paper we have proposed a new improved algorithm of Traffic Dependent Power Conservation, which proactively divides the MSSs(Mobile Subscriber Stations)...
Wireless Sensor Networks (WSNs) are of great interest to researchers due to their various applications in areas such as environmental monitoring, process monitoring and tracking surveillance systems. Sensors are deployed in hostile in random fashion giving self-organized topology. Medium Access Control (MAC) plays a vital role in the power saving mechanism of WSNs. MAC schemes for WSNs are different...
A multi-frame Neighbor Discovery Protocol over a DTN network with RFID Devices is proposed. This protocol is based on a Sift-distribution (s-Persistent) in order to differentiate the access probability to slots among RFID devices. Moreover, our approach has been considered in a mono-frame and multi-frame scenario. Our s-Persistent approach is applied in a simulated test and in a real test-bed in order...
The limited capacity of batteries of nodes imposes a constraint on ad hoc networks. Thus, energy efficiency is critical to prolong the network lifetime. Network traffic should be routed such that the energy consumption is minimized. In this paper, we discuss the energy-efficient multicast problem in ad hoc networks with the respect of delay. Multicast routing deals with finding a multicast tree, which...
A challenging issue in data collection in duty-cycled wireless sensor networks (DC-WSNs) is the trade-off between lifetime and latency. Indeed, duty-cycling has long been a critical mechanism for energy conservation in WSNs where the sensor nodes switch between active and dormant states. Moreover, this mechanism involves strong sleep latencies leading to severe end-to-end delay degradation. In this...
Receiver-based MAC (RB-MAC) is a preamble-sampling MAC protocol for WSNs in which a receiver node is dynamically elected, among potential neighbors of the sender node, based on current channel conditions. In this paper, we evaluate the performance of RB-MAC and compare it with a sender-based preamble-sampling MAC protocol by using analytical methods, and implementation in real sensor nodes. We have...
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