Results 241 to 250 of about 719,599 (285)

Extending network lifetime for ALLIANCES

Computer Communications, 2009
ALLIANCES is a newly proposed wireless MAC protocol that exploits the cooperation of source nodes and relay nodes to resolve collisions and further improve throughput. Until now, ALLIANCES did not consider energy, which is the most precious commodity of mobile communications.
Xinhua Yang, Tracy Camp, Hailong Yang, Athina P. Petropulu   +3 more
openaire   +1 more source

Wireless sensor network lifetime optimization

3rd International Conference on Advances in Recent Technologies in Communication and Computing (ARTCom 2011), 2011
This paper presents wireless sensor network (WSN) for environmental monitoring with optimized lifetime. The node is equipped with multimode sensors for sensing different environmental parameters. An efficient utilization of power is essential in order to use networks for long duration, hence it is needed to reduce data traffic inside sensor networks ...
G.T. Raju, D.K. Ghosh, T.S. Kumar, S. Kavyashree, V. Nagaveni   +4 more
openaire   +1 more source

Lifetime in Wireless Sensor Networks

2009 International Conference on Complex, Intelligent and Software Intensive Systems, 2009
The following paper deals with criterion used to measure communication protocol efficiency in Wireless Sensor Networks. As energy is a crucial characteristic of those networks, it is necessary to pay attention both to the energy consumption and to the distribution of energy consumption, when using communication protocols, so as to increase the lifetime
Champ, Julien, Saad, Clément, Baert, Anne-Elisabeth   +2 more
openaire   +2 more sources

Node Lifetime - Network Lifetime Tradeoff for Data Gathering Trees in Wireless Sensor Networks

Proceedings of the International Conference on Intelligent Information Processing, Security and Advanced Communication, 2015
We study the performance of the bottleneck node weight-based data gathering trees (BNW-DG) and bottleneck link weight-based data gathering (BLW-DG) trees in wireless sensor networks (WSNs) through extensive simulations. The BNW-DG trees incur a smaller diameter and a significantly larger fraction of nodes as leaf nodes; whereas the BLW-DG trees incur a
openaire   +1 more source

Improving network lifetime with mobile wireless sensor networks

Computer Communications, 2010
Sensors are used to monitor and control the physical environment. In mobile sensor networks, nodes can self-propel via springs, wheels, or they can be attached to transporters, such as vehicles. Sensors have limited energy supply and the sensor network is expected to be functional for a long time, so optimizing the energy consumption to prolong the ...
Yinying Yang, Mirela I. Fonoage, Mihaela Cardei   +2 more
openaire   +1 more source

Maximum network lifetime in fault tolerant sensor networks

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005., 2005
This paper introduces a novel technique to maximize the lifetime of fault tolerant sensor networks. The proposed architecture uses multipath diversity in the network layer and erasure codes. We use a distributed sink where information arrives at the sink via multiple proxy nodes, called "prongs" in this paper.
P. Djukic, S. Valaee
openaire   +1 more source

Network lifetime optimization in wireless video sensor networks

IET International Communication Conference on Wireless Mobile & Computing (CCWMC 2009), 2009
Network lifetime optimization is a critical issue in energy-constrained and error-prone wireless video sensor networks. Multipath routing based network coding can effectively solve the packet loss problem in which only a relatively small proportion of energy is consumed.
null Bing Peng, null Junni Zou, null Chong Tan, null Min Wang   +3 more
openaire   +1 more source

Maximizing network lifetime in wireless sensor networks with regular topologies

The Journal of Supercomputing, 2008
Limited energy supply (battery-powered) is a crucial problem in wireless sensor networks (WSNs). Sensor node placement schemes and routing protocols are mostly proposed to address this problem. In this paper, we first present how to place sensor nodes by use of a minimal number of them to maximize the coverage area when the communication radius of the ...
Hui Tian, Hong Shen, Matthew Roughan
openaire   +1 more source

Predicting metapopulation lifetime from macroscopic network properties

Mathematical Biosciences, 2009
This paper presents a comparatively simple approximation formula for the mean life time of a metapopulation in a habitat network where habitat patch arrangement may be irregular and patch sizes differ. It is based on previous work on the development of an analytical approximation formula by Frank and Wissel [K. Frank, C.
openaire   +3 more sources

Security - Lifetime tradeoffs for wireless sensor networks

2007 IEEE Conference on Emerging Technologies & Factory Automation (EFTA 2007), 2007
This paper deals with tradeoffs between the security capability of wireless sensor networks and the lifetime performance. The REWARD algorithm for secure routing is used as a main example. Nodes listen to neighbors transmissions to detect black hole attacks. As a result, symmetrical forwarding of packets is required.
openaire   +2 more sources