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.
This paper proposes ARM, an receiver-initiated MAC protocol with duty cycling to tackle control channel saturation, triple hidden terminal and low broadcast reliability problems in asynchronous multi-channel WSNs. By adopting a receiver-initiated transmission scheme and probability-based random channel selection, ARM effectively solves control channel saturation and triple hidden terminal problems...
Reliable delivery of data is a classical design goal for reliability-oriented collection routing protocols for ad hoc wireless sensor networks (WSNs). Guaranteed packet delivery performance can be ensured by careful selection of error free links, quick recovery from packet losses, and avoidance of overloaded relay sensor nodes. Due to limited resources of individual senor nodes, there is usually a...
Indoor Wireless sensor networks require a highly dynamic, adaptive routing scheme to deal with the high rate of topology changes due to fading of indoor wireless channels. Besides that, energy consumption rate needs to be consistently distributed among sensor nodes and efficient utilization of battery power is essential. If only the link reliability metric is considered in the routing scheme, it may...
In ad hoc networks some nodes can became a critical spot in the network because they support packet forwarding for most of their neighbours. Critical nodes would consume more energy due to the extra load and deplete battery sooner. These unfairly burdened nodes will lead to node failure, network partitioning, decrease in route lifetime and route reliability. To avoid this problem, this paper proposes...
Variable power wireless sensor networks are prevalent and cost-effective. In existing system EAR (efficient and reliable routing protocol) is implemented over fixed power sensor network. Approach of EAR improves the packet delivery ratio and reducing the energy consumption in fixed power sensor network. This work extends the same work to the platform of variable power sensor networks. We propose a...
Location service stores and maintains geographical locations of all the nodes in a network, which is used by location based routing protocols. It consists of location servers which stores location information of some or all nodes in the network. Two basic operations, carried on location servers, are update and query. In update operation, nodes update their location information stored in their location...
To achieve efficient broadcasting with low interference and low energy consumption, each node optimizes its transmission power. In a tree-based topology, the message of node u can be overheard by nodes which are in the region of transmission radius of node u but not in a logical neighborhood of u. Therefore, some protocols have been proposed to reduce energy consumption by using overhearing. Since...
In wireless sensor networks (WSN), energy efficiency is crucial to achieving satisfactory network lifetime. The most commonly used and may be the only efficient method to reduce the energy consumption significantly is to turn off the radios most of the time, except when it has to participate in data communication. The key challenge is to operate the radio at a low duty cycle but still ensure the delay...
The wireless sensor network is an autonomous collection of sensors which makes a simple, high speed and inexpensive network. These kinds of network are able to monitor a parameter where the coverage is impossible via wired networks. Since, the sensors in wireless networks are equipped with batteries, these networks are energy constrained and clustering approaches play an important role in energy efficiency...
The following topics are dealt with: IP multimedia subsystem; video applications and services; content generation and delivery; audio/broadcast video applications and services; indoor communications systems; broadband communications systems; coding and propagation; network performance and reliability; networks and protocols; resource management; performance and QoS in ad hoc and sensor networks; energy...
Self-configuring, hierarchical, ad hoc, wireless networks are fast becoming the focus of research for spectral efficiency and energy efficiency reasons. Such networks can be considered as graphs where a node represents a transceiving unit and an edge represents a communication link between two nodes. In order to probabilistically analyse connectedness issues in such graphs, the concept of the star-node...
Since sensor network lifetime shows a strong dependence on battery lifetime, power consumption is a critical concept in design of sensor network. For the sensor network to operate successfully both requirements of sensing coverage and network connectivity should be met. Other research have joined coverage and connectivity problem at the same time. Sensing coverage is achieved by dividing sensor nodes...
Mobile ad hoc networks have been used in the area where fixed network infrastructure is not available or wireless ad hoc connection is needed. Since mobile ad hoc network nodes are usually battery operated and it is possible that some mobile nodes will eventually run out of battery and misbehave by dropping packets to save their battery level. In this paper, we propose a routing algorithm to prolong...
Wireless sensor networks are simple, high speed and inexpensive networks that include large number of sensors. These networks are able to monitor a parameter where the coverage is impossible via wired networks. Since clustering improves energy consumption, clustering algorithms aim at this improvement. In this paper, an energy efficient algorithm entitled EECDP (energy efficient clustering with direct...
Clustering techniques in routing protocols is an effective topology control approach, which can increase the scalability of wireless sensor networks and efficiently utilize the limited energy resources of the sensor nodes. However, the problem of the hot spots exists in current clustering algorithms. When cluster heads corporately forward the data packets to sink with multi-hop communication, some...
Energy efficient routing and power control techniques in wireless ad hoc networks have drawn considerable research interests recently. In this paper, we address the problem of energy efficient reliable routing for wireless ad hoc networks in the presence of unreliable communication links or devices or lossy wireless link layers by integrating the power control techniques into the energy efficient...
In this paper, an energy-efficient multiple paths routing algorithm for wireless sensor network (WSN) is proposed. It consists of three elements: (i) gradients to disseminate data over multiple paths from a source to a sink, (ii) rules to set up disjoint multiple paths, and (iii) policies to select the working path. By limiting the maximum number of the gradients, the exploratory data messages forwarded...
In this paper, we investigate the issues of survivability and efficiency in a heterogeneous mobile ad hoc network (MANET) and Sensor network as a combined network where the communications is achieved using a mixed MANET and Sensor Network, referred to as SMANET for supporting mission critical applications. Using the cluster managed SMANET where, heterogeneous nodes with different capabilities and...
Mobile Ad-Hoc Networks (MANETS) are characterized by random, multi-hop topologies that do not have a centralized coordinating entity or a fixed infrastructure that may change rapidly over time. In addition, mobile nodes operate with portable and finite power sources. In this work, we propose an energy-efficient metric for MANETs to minimize energy consumption and increase the networkpsilas consistency...
The paper presents a cross-layer energy-efficient and reliable routing (named CLE2aR2) protocol to construct an energy efficient and reliable route and resist the variation of wireless channels for wireless ad hoc networks. CLE2aR2not only considers how to construct a route from the source to the destination, but also takes some important lower-layer factors, such as power strength, data transfer...
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.