exposure in wireless ad hoc sensor networks pdf
Báo cáo hóa học: "Research Article A Random Ant-Like Unicast Routing Protocol for Wireless Ad Hoc Sensor Networks and Performance Evaluation" pdf
Ngày tải lên :
21/06/2014, 17:20
... and
critical task in wireless sensor networks.
Existing major routing protocols for wireless sensor net-
works include LEACH [1], Directed Diffusion [2], Dynamic
Source Routing (DSR) [3], Ad hoc on Demand ... multipath routing
depending on how many paths are reinforced by sink node.
DSR, AODV, Gossiping, and SPIN are single-path routing
protocols for ad hoc topology wireless sensor networks. Most
of the ... source routing in ad hoc
wireless networks, ” in Mobile Computing,T.Imielinskiand
H. F. Korth, Eds., chapter 5, Kluwer Academic Publishers,
Dodrecht, The Netherlands, 1996.
[4] C. E. Perkins and...
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wireless ad hoc & sensor networks 3
Ngày tải lên :
09/07/2014, 08:13
...
of
Link
layer
protocols
ã The lower layers in detail
ã Summary
15
Classification of MAC protocols
16
Wireless Ad Hoc & Sensor Networks
Wireless
Ad
Hoc
&
Sensor
Networks
Medium ... about routing protocols for
ad hoc networks
52
Link management
ã Goal
Decide to which neighbours a link should be established
ã Problem: Link quality
is not binary (good vs. bad), i.e. link quality ... coordination
51
Summary
ã The Ad Hoc wireless networks MAC protocols have been
classified into different categories
ã Some protocols were discussed as examples
ã In the MAC layer of the sensor networks...
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Báo cáo hóa học: " Editorial Cooperative Localization in Wireless Ad Hoc and Sensor Networks" pdf
Ngày tải lên :
22/06/2014, 01:20
... is
proposed and applied to existing localization algorithms.
In the paper “A new time-based algorithm for positioning
mobile terminals in wireless networks by I. Martin-Escalona
and F. Barcelo-Arroyo, ... nodes is
investigated.
The last two papers address the problem of localizing
and tracking objects using a WSN. In particular, the paper
“Localization capability of cooperative anti-intruder radar
systems” ... are
running. This study addresses the accuracy of the TOAD
algorithm in two different environments: line-of-sight (LOS)
and non-line-of-sight (NLOS). This technique improves the
scalability and integrity...
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Topology Control in Wireless Ad Hoc and Sensor Networks pdf
Ngày tải lên :
27/06/2014, 00:20
... surrounding, information on
shops/restaurants in the area, and so on.
1.1.2 Wireless sensor networks
Wireless sensor networks (WSNs for short) are a particular type of ad hoc network, in
which ... Control in Wireless Ad Hoc and Sensor Networks P. Santi
2005 John Wiley & Sons, Ltd
Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com
10 AD HOC AND SENSOR NETWORKS
Currently, ... can quickly reach
Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com
20 MODELING AD HOC NETWORKS
the features of typical nodes in ad hoc and sensor networks are quite different,...
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Topology Control in Wireless Ad Hoc and Sensor Networks phần 1 doc
Ngày tải lên :
14/08/2014, 14:20
... xxvii
I Introduction 1
1 Ad Hoc and Sensor Networks 3
1.1 TheFutureofWirelessCommunication 3
1.1.1 Adhocnetworks 3
1.1.2 Wirelesssensornetworks 5
1.2 Challenges 7
1.2.1 Adhocnetworks 8
1.2.2 Wirelesssensornetworks ... on topology control in
wireless ad hoc and sensor networks, a topic that has been a subject of intensive research
in recent years. Indeed, this research field is far from being settled, and several ... on fault-tolerant comput-
ing in multiprocessor systems. Starting from 2001, his research interests shifted to wireless
ad hoc networking, with particular focus on the investigation of fundamental...
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Topology Control in Wireless Ad Hoc and Sensor Networks phần 2 pps
Ngày tải lên :
14/08/2014, 14:20
... Control in Wireless Ad Hoc and Sensor Networks P. Santi
2005 John Wiley & Sons, Ltd
AD HOC AND SENSOR NETWORKS 7
Table 1.1 Comparison of typical features of
wireless ad hoc and sensor networks
Ad ... Figure 2.1).
2
Modeling Ad Hoc Networks
In this chapter, we introduce a simple but widely accepted model of ad hoc network. Since
sensor networks are a subclass of ad hoc networks, this model ... of ad hoc networks. In fact, sensor networks are
18 MODELING AD HOC NETWORKS
RA(u) at time t. In this case, v is said to be a 1-hop neighbor, or neighbor for short, of
node u. A wireless link...
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Topology Control in Wireless Ad Hoc and Sensor Networks phần 3 pot
Ngày tải lên :
14/08/2014, 14:20
... regulating the access to
the wireless, shared channel. Medium access control is of fundamental importance in ad
hoc/ sensor networks in order to reduce conflicts as much as possible, thus maintaining ... strong: in fact, in
many situations, node locations cannot be determined a priori (for instance, when sensors
are dispersed on the field using a moving vehicle), and obtaining exact location information
when ... application in mobile ad hoc networks.
3.4 Topology Control in the Protocol Stack
A final question is left: where should topology control mechanisms be placed in the ad hoc
network protocol stack? Since...
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Topology Control in Wireless Ad Hoc and Sensor Networks phần 4 pot
Ngày tải lên :
14/08/2014, 14:20
... that shadowing/fading effects are not considered,
transmitting range, and transmit power level are equivalent concepts. Since traditionally the
function RA is defined in terms of range, instead of ... shortest path destination tree, the
corresponding spanning tree T
is obtained by changing the directed edges in the shortest
path tree to the corresponding undirected edges in G. Since each of the ... u
and v can be routed along at least k different paths, instead of along at least one single
Topology Control in Wireless Ad Hoc and Sensor Networks P. Santi
2005 John Wiley & Sons, Ltd
THE...
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Topology Control in Wireless Ad Hoc and Sensor Networks phần 6 potx
Ngày tải lên :
14/08/2014, 14:20
... avoiding this
inconvenience: (i) enforcing all unidirectional links in G
LMST
to become bidirectional; or
(ii) deleting all the unidirectional links in G
LMST
. If technique (i) is used, the obtained
graph ... are reported in Table 12.2, are inter-
esting: contrary to the case of CNN, wCNN shows a converging behavior as n increases;
in particular, wCNN converges to 6 as n →∞.
It is interesting to compare ... determine which one of them is closer.
This can be accomplished by comparing the transmit powers included in the incoming
messages received from v and w (we recall that this information is included...
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Topology Control in Wireless Ad Hoc and Sensor Networks phần 7 pptx
Ngày tải lên :
14/08/2014, 14:20
... that in LMST the constructed topology, which in general
can contain unidirectional links, is made symmetric by probing each node in N
LMST
(u),
and by removing the link (or adding the reverse link) ... previous example, humans carrying a wireless device can be seen as network nodes).
In some cases, node mobility is present in wireless sensor networks also: for instance, if
sensors are deployed on ... reverse edge in the unidirectional links (or by removing all the
unidirectional links), in XTC it is the neighbor relation itself that is symmetric, so adding
or removing unidirectional links is not...
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Báo cáo hóa học: " A survey of performance enhancement of transmission control protocol (TCP) in wireless ad hoc networks" pptx
Ngày tải lên :
21/06/2014, 00:20
... proposals for
improving the performance of TCP on wireless ad hoc
networks, those readers who are interested in single-hop
wireless networks are referred to [17]. The readers inter-
ested in the surveys ... Fundamentally,
wireless networks can be divided into two types: infra-
structure, and ad hoc networks (also called infrastruc-
ture less networks) . Examples of infrastructure and
wireless ad hoc networks ... Maltz, Dynamic source routing in ad hoc wireless
networks. Mobile Comput, 153–181 (1996)
25. D Kim, Y Choi, TCP-BuS: improving TCP performance in wireless ad hoc
networks, in Communications, 2000....
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Báo cáo hóa học: " Research Article Tree-Based Distributed Multicast Algorithms for Directional Communications and Lifetime Optimization in Wireless Ad Hoc Networks" pptx
Ngày tải lên :
22/06/2014, 22:20
... reproduction in any medium, provided the original work is properly cited.
1. INTRODUCTION
There is an increasing interest in wireless ad hoc networks
in many application domains where instant infrastructure ... Cheng, J. Sun, M. Min, and D Z. Du, “Energy-efficient
broadcast and multicast routing in ad hoc wireless networks, ”
in Proceedings of the 22nd IEEE International Performance,
Computing and Communications ... dark arrows indicate links that are included into
thetreeinsearch phases and the lig h t arrows indicate the links that
are included into the tree in grow phases.)
Finally, it remains to show...
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