The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Underwater communication has become a popular research area because of many applications such as oceanography data collection, ocean exploration, undersea navigation, and control of autonomous underwater vehicles (AUVs). Since electromagnetic wave communication does not propagate well in underwater, long communication ranges are only possible through the use of acoustic waves. Acoustic communication...
MANET is a set of mobile devices with no fixed topology. Ad hoc means “for this purpose”. In MANET nodes are battery operated with dynamic network topology hence energy efficiency is an important design consideration to extend the lifetime of networks. Topology of network plays an important role for energy conservation. Topology control is to decide the transmission power of nodes and to increase...
Energy has become an important issue in many areas due to increasing energy costs and environmental issues. The Internet is one of the major energy consuming areas. In this paper1, we proposed an energy-aware routing and resource management model for large-scale networks by adapting an SDN (Software Defined Networking) based approach. Controller uses pre-established multi-paths (PMPs) and perform...
Energy efficiency has become an important research issue for wireless sensor networks. Sensor nodes, thus, need to make use of their limited energy to keep active time as small as possible to prolong the whole network lifetime while meeting the performance requirement. In this work, we reinvestigate the overhearing problem, which occurs when an awake node overhears the transmission nearby, and this...
The nodes near sink in wireless sensor networks are featured with heavy transmission loads, so these performance bottleneck nodes are prone to running out of energy early with shortened network lifetime. Routing tactic plays important role on transmission performance and energy consumption of network. In this paper, we enumerate typical source routing tactics in Grid topology, include 1) Random Equal...
As the technology sizes of integrated circuits (ICs) scale down rapidly, current transistor densities on chips dramatically increase. While nanometer feature sizes allow denser chip designs in each technology generation, fabricated ICs become more susceptible to wear-outs, causing operation failure. Even a single link failure within an on-chip fabric can halt communication between application blocks,...
Energy consumption represents a key element in the Wireless Sensor Networks (WSNs) design. Several factors can cause energy over consumption such as mobility, node position (relay or gateway), retransmissions... The network topology can also be a major cause of energy waste: a transmission in 1-hop requires a high energy, a transmission in K-hops requires a lower energy, even though, it can damage...
Aiming at the problems of too much energy consumption and local routing optimization in AODVjr algorithm, an improved algorithm based on tree routing algorithm and AODVjr algorithm is proposed to avoid dead nodes emerging too early. The improved hybrid algorithm introduces neighbor table, the calculation method of the parent node address and puts forward a neighbor node selection strategy according...
WirelessHART specification is emerging nowadays as a solution for the last mile connection in order to attend a trend on industrial networks that aims the usage of wireless technologies. Despite its high degree of applicability, a WirelessHART network faces some challenges. One of the most challenging problems are its reliability, energy consumption and the environment interference. Thus, representing...
Nodes in ad hoc networks rely on batteries with limited capacity. As result, this imposes constraints on the network lifetime. In order to maximize the network lifetime, routing protocols should deliver traffic in a way that the energy consumption is minimized. This paper discusses the problem of energy saving in QoS multicast routing of ad hoc wireless networks. Our goal is to find a network topology...
The devices composing Wireless Sensor Networks (WSN) are very limited in terms of memory, processing power and battery. We need efficient routing algorithms to ensure a long lifetime of the WSN. However, many solutions focus on minimizing the average energy consumption of all the nodes. Since the lifetime is rather given by the death of the first node or by the disconnection of the network, these...
Duty cycling is an effective method for prolonging network lifetime in WSNs. In recent studies, dynamic duty cycle schemes are adopted with the use of asynchronous MAC protocols. The opportunistic routing employing forwarder set is applicable for duty-cycled WSNs. Moreover, remaining energy of nodes could be taken into account as a restriction when adjusting duty cycles. In this work, in order to...
Wireless sensor networks (WSNs) are a self-organized networks and they are formed by dynamic topologies. Due to the constantly changing topology in WSN, it is a challenging task to tackle energy utilization of sensor nodes and ensure the end-to-end path between nodes and the sink. The existing mechanisms are inefficient to ensure availability of routes, while consuming minimal power, when the change...
Environmental energy harvesting or scavenging can provide a solution to the energy capacity limitation of wireless sensor networks. However, in order to efficiently use harvested energy, the harvest properties need to be incorporated into the network design. Existing harvest-aware routing protocols incorporate node residual battery and forecast energy harvest information into routing decisions. We...
Minimizing energy consumption and improving performance in data centers are critical to cost-saving for cloud operators, but traditionally, these two optimization objectives are treated separately. Therefore, this paper presents an unified solution combining two strategies, flow migration and VM migration, to maximize throughput and minimize energy, simultaneously. Traffic-aware flow migration (FM)...
Wireless sensor network is a new type of wireless network. It has been widely application in the network communication, the wireless transmission, embedded computing, environmental monitoring and other fields. As the wireless sensor nodes are often set in complex geographical environment and had not continuous power supply, thus saving energy has been one of the main directions of research. Cellular...
In this paper, we introduce a novel least distance smart neighboring search (LDSNS) to determine the mostefficient path at one-hop distance over WSNs. LDSNS helps to reduce the energy consumption and speeds up scheduling for delivery of data. It provides cross layering support and linking MAC layer with network layer to reduce the amount of control messages. LDSNS is a robust and efficient approach...
This paper proposes a distributed routing protocol that minimizes the energy consumption of communication networks. The proposed protocol, called PG2BR (Parameterized Green Gradient Based Routing) contains a dual process, which includes i) a two-phase mechanism that gradually powers devices on/off in a decentralized manner, depending on the traffic condition, and ii) a distributed gradient based routing...
This paper proposes a routing algorithm that enhances a network lifetime and decreases an end-to-end latency for industrial wireless sensor networks (IWSNs) based on ISA100.11a standard. The proposed algorithm can be applied to large-scale networks where data is conveyed by multi-hop forwarding scheme from source nodes to the sink. By estimating a residual energy and a packet reception rate (PRR)...
Topology control problems in wireless sensor networks (WSN) have important relationship with energy saving, network efficiency, network security and so on. In this paper, MATC, a mobile agent based topology control algorithm is proposed, which could solve three problems in data collection and transmission in WSN: routing void, isolated node and sleeping control. Simulation results show that MATC could...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.