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Data transmission capacity of ad-hoc wireless networks could be increased by using multi-path transmission and minimising mutual interference between nodes. This approach could also be used to extend D2D communication opportunities in 5G. The objective of this paper is theoretical analysis and computer simulation to reveal the best conditions for combining smart antennas and multi-path transmission...
Recently, a tremendous interest has been concentrated on the design and development of wireless sensor networks (WSNs) — distributed systems comprised of numerous wireless, sensor devices deployed densely in a sensing area. Battery powered sensors need efficient management due to limited energy resources, and energy conservation is a vital design issue that needs to be boosted in order to increase...
Simulation is one of the main tools used to analyze new proposals in the Network-on-Chip (NoC) field. Among these simulators for analyzing and testing new ideas in NoC architectures, the Noxim simulator stands out, being used by many researchers due to the wireless support and open-source availability. An important issue at the simulation phase is the choice of workload, as it may affect testing the...
Applying network coding and opportunistic routing can significantly improve the throughput performance of wireless multi-hop networks, but a mismatch problem still exists among the upper flow rate, routing and lower transmission resource scheduling. This paper models the throughput optimization as a network utility function maximization in wireless multi-hop networks. By applying Lagrangian dual decomposition...
It is important to use healthy communication and appropriate routing techniques to increase performance in wireless body area networks. At present, the biggest problem of sensor nodes that bring such networks into the uneasiness is limited energy resources. In this paper, it is proposed to make road selection by calculating the distances of the nodes and the battery levels while making the routing...
Innovations in technology that have enabled efficient wireless tiny devices propelled the concept of Internet of Things. It is expected that mobile data traffic will experience 8-fold growth between 2015 and 2020 and the number of mobile connected devices will reach 11.6 billion by 2020. Main factors of this exponential growth and wide acceptance are the integration of several technologies and communications...
The concept of mesh networks brings many challenges to the research community when designing such system. In this paper, we propose a new routing model to account for the link utilization between nodes, as well as the remaining energy left in each node. The framework, called Distributed Split-path, is implemented on top of the Optimized Link-State Routing (OLSR) protocol. We demonstrate the improvement...
Recent advances in technology propelled the development of resource constrained tiny devices and the concept of Internet of Things (IoT). Potential applications spanning various fields of science from environmental to medical have been emerged. Different architectures, routing protocols, performance issues and goals have been suggested. In this work, we review fundamental concepts, recent developments...
Although IEEE 802.11p technology is standardized for road safety and efficiency applications, the channel congestion problem is its key weakness necessitating distributed congestion control (DCC) algorithms on different layers of the communication stack. In this paper, we propose DCC-enabled Contention based Forwarding scheme targeting multi-hop dissemination of Decentralised Event Notification Messages...
This paper describes a new implementation of the Elastic Multicast (EM) protocol including new design enhancements for improved dynamic operation. The paper also presents additional performance data collected from emulation-based mobile network experiments. EM is a low complexity extension to Simplified Multicast Forwarding (SMF) that adds group-specific dynamic pruning of the SMF-based multicast...
In recent years, dramatic growth of mobile data traffic has left the operators no choice but to consider Wi-Fi networks as an economic complementary solution. To achieve this, WLANs require to adopt some of the key features of carrier-grade operators, such as centralized resource management. As an emerging paradigm, Software Defined Networking (SDN) can be used to provide salient centralized network...
Most of the routing protocols for wireless networks have focused on finding a feasible route from a source to a destination. Routing Protocols in Multi-hop Wireless Networks (MHWNs) face more serious security and reliability challenges. Radio jamming attacks are especially harmful to the reliability of links, as they can effectively disrupt communication between any node pairs result in that links...
Wireless Software Defined Network (W-SDN) is the application of SDN technology in wireless network and has been widely used in sensor network, 5G communication network, et al. Since SDN needs to install flow entries at every hop to match each data packet, then it may bring heavy burden to the wireless nodes as the wireless node usually has much smaller memory space comparing with network devices in...
RPL (the IETF Routing Protocol for Low-Power and Lossy Networks) and LRP (Lightweight Routing Protocol) have in common to build a collection tree (or, more precisely, a DODAG) and "downward" host routes in the wireless sensor network. Additionally, the objective of LRP is to keep control overhead as low as possible. To substantiate this claim, we compare RPL and LRP using 40 nodes of the...
A Flying Ad-hoc Network (FANET) is a wireless ad-hoc network specifically designed for the communication of Unmanned Aerial Vehicles (UAVs). Multicast routing is one of the vital aspects in wireless ad-hoc networks. Research works have been proposed to tackle the challenges in multicast routing in ad-hoc network environments with multi-hop communication. Nevertheless, the conventional multicast routing...
This paper applies the theory of Evolutionary Game to QoS routing algorithm for wireless mesh networks which can not only improve the performance of traditional QoS routing protocols but also be able to reduce the cost of the routing algorithm.
With the continuous progress of rural construction, the problem of rural drinking water pollution is increasingly prominent. In view of water pollution, a design of rural drinking water monitoring system based on wireless sensor networks is proposed that nodes take STM32 as the core chip and WLK01L39 as well as its peripheral circuits are used as wireless communication modules and Beidou S1216 is...
Low Power and Lossy Networks (LLN) are characterized by stringent energy constraints and frequent communication errors. Recent research in the area of LLNs has focused in solving many issues like security, energy efficiency, and routing. RPL is a new routing protocol proposed for LLNs by IETF ROLL group. RPL provides opportunities for improving overall performance of LLN by providing mechanisms for...
Wireless sensor network is composed of many wireless sensor nodes with the same or different functions. A typical sensor node consists of four parts: sensor unit, information processing unit, wireless communication unit and energy supply unit. In this paper, the existing ant colony algorithm is analyzed, and an improved ant colony optimization algorithm is proposed. The paper presents design of routing...
Wireless Sensor Networks (WSN) have gained worldwide attention in recent years, particularly with which has facilitated the development of smart sensors. WSN consists of small nodes with sensing, computation and wireless communication capabilities. In WSN, clustering is used as an effective technique to achieve scalability, self-organization, power saving, channel access, routing etc. Lifetime of...
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