E-SPAN: enhanced-SPAN with directional antenna

Kumar, Vineeth; Arunan, T.

doi:10.1109/tencon.2003.1273261

Cited by 8 publications

(4 citation statements)

References 5 publications

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“…In enhanced SPAN (E-SPAN) [19], directional antennas are used. In this method, data is sent in directional mode and "hello" message is sent in omni mode.…”

Section: Related Workmentioning

confidence: 99%

Capacity-Preserved, Energy-Enhanced Hybrid Topology Management Scheme in Wireless Sensor Networks for Hazardous Applications

Jawahar¹,

Radha²,

Kumar³

2011

International Journal of Distributed Sensor Networks

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A wireless sensor network is composed of large number of sensor nodes and they are densely deployed in the field to monitor the environment, collect the data and route it to a sink. The main constraint is that the nodes in such a network have a battery of limited stored energy the network lifetime gets reduced. There are various topology management schemes such as SPAN, STEM, GAF, BEES and so forth, for improving network parameters such as capacity, lifetime, coverage and latency. These schemes do not improve all the mentioned network parameters. Sustainable Physical Activity in Neighbourhood (SPAN) scheme, preserves network capacity, decreases latency but provides less energy savings. Sparse Topology and Energy Management (STEM) scheme does not preserve capacity resulting in great energy savings and high latency. In the proposed scheme, new coordinator rule is implemented in SPAN, and then integrated with STEM. It is observed that the energy conserved increases by about 3.18% to 4.17% without sacrificing network capacity. Due to definite path in the proposed scheme the latency is reduced by almost half the latency of STEM scheme.

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“…In enhanced SPAN (E-SPAN) [19], directional antennas are used. In this method, data is sent in directional mode and "hello" message is sent in omni mode.…”

Section: Related Workmentioning

confidence: 99%

Capacity-Preserved, Energy-Enhanced Hybrid Topology Management Scheme in Wireless Sensor Networks for Hazardous Applications

Jawahar¹,

Radha²,

Kumar³

2011

International Journal of Distributed Sensor Networks

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“…Other techniques are based on the assumption that nodes have information about their own positions and the position of their neighbors [6], or that they have directional antennas that are used to determine the orientation of the nodes [5], [7]. Although both assumptions are valid, they are costly and not easy to implement.…”

Section: Related Workmentioning

confidence: 99%

“…The CDS approach has been utilized in several papers [1]- [3], [5], [13]- [15]. Most CDS-based mechanisms work in two phases: in phase one they create a preliminary version of the CDS, and in phase two they add or remove nodes from it to obtain a better approximation to the optimal CDS.…”

Section: Related Workmentioning

confidence: 99%

Topology maintenance: Extending the lifetime of wireless sensor networks

Wightman

Labrador

2009

2009 IEEE Latin-American Conference on Communications

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Topology control is a well-known strategy to save energy and extend the lifetime of wireless sensor networks. In the literature, it is usually referred as the process that, given a set of nodes, builds a reduced topology that still guarantees connectivity and coverage. Here, we extend this definition. We consider topology control as two processes: topology construction and topology maintenance. Topology construction encompasses those algorithms that build the reduced topology. Topology maintenance is the process that changes the reduced topology from time to time when the current one is no longer optimal. In this paper we define topology maintenance and present different strategies and triggering criteria that can be used to switch the network topology. We also implement static and dynamic global topology maintenance strategies using two well-known topology construction algorithms and time-and energy-based triggering criteria, and compare their performance via simulations on sparse and dense networks. Our results demonstrate that the appropriate use of topology maintenance techniques extends the network lifetime versus the option of not doing topology maintenance at all. In sparse networks, while dynamic global techniques improve the network lifetime, static techniques may improve or degrade the performance. However, all results are fairly similar. On the other hand, topology maintenance is very well justified in dense networks where important performance improvements can be achieved. In this case, the superiority of dynamic global techniques is evident, and even more as the density of the network increases.

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“…Other algorithms that work using this technique are the Distance-2 (D2) Coloring algorithm [48] and SPAN [49]. A modified version of the SPAN algorithm that includes the use of directional antennas and presents the same message and computational complexity of the original version is presented in [50]. Other algorithms that belong to this category can be found in [51], and [41].…”

Section: Backbone-based Techniquesmentioning

confidence: 99%

Topology Control in Wireless Sensor Networks

Wightman

Mario

2009

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E-SPAN: enhanced-SPAN with directional antenna

Cited by 8 publications

References 5 publications

Capacity-Preserved, Energy-Enhanced Hybrid Topology Management Scheme in Wireless Sensor Networks for Hazardous Applications

Capacity-Preserved, Energy-Enhanced Hybrid Topology Management Scheme in Wireless Sensor Networks for Hazardous Applications

Topology maintenance: Extending the lifetime of wireless sensor networks

Topology Control in Wireless Sensor Networks

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