Topology Control in Wireless Ad Hoc Networks phần 4 pot
Topology Control in Wireless Ad Hoc Networks phần 4 pot
... than in the case of unicast
5
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ACM MobiHoc – Tokyo, May 24, 20 04
Istituto di
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e Telem atica
Physical vs. logical node degree
TC protocols: 4/ 12
Major advantage of topology control: ... periodical topology control
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ACM MobiHoc – Tokyo, May 24, 20 04
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e Telem atica
RNG, GG, and other routing graphs (2)
Energy-efficient communication: 5/7...
Topology Control in Wireless Ad Hoc Networks phần 3 potx
... the minimum-power path in G’ and in G
In words, the power stretch factor is a measure of the increase in the
energy cost due to the fact that we communicate using the routing graph
G’ instead ... node positions. Determine a connecting
range assignment RA of minimum energy cost, i.e. such that ∑
u
(RA(u))
α
is minimum
5
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ACM MobiHoc – Tokyo, May 24, 20 04
Istituto di
Informatica...
Topology Control in Wireless Ad Hoc Networks phần 6 potx
... TC
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ACM MobiHoc – Tokyo, May 24, 20 04
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Impact of interferences
Open issues: 4/ 11
Another possibility for more realistic models is considering interferences
between ... needed
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ACM MobiHoc – Tokyo, May 24, 20 04
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The mobile CTR (4)
Mobility: 7/10
CTR in case of stationary and RWP mobile networks
(fr...
Topology Control in Wireless Ad Hoc Networks phần 1 pdf
... network capacity
Introduction: 1/7
5
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ACM MobiHoc – Tokyo, May 24, 20 04
Istituto di
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Topology Control in Wireless Ad Hoc Networks
Paolo Santi
Istituto di Informatica e ... 20 04
Istituto di
Informatica
e Telem atica
Topology control: an informal definition
Topology control:
the art of coordinating nodes’ decisions regarding their
transmittin...
Topology Control in Wireless Ad Hoc Networks phần 2 ppsx
... 24, 20 04
Istituto di
Informatica
e Telem atica
CTR: probabilistic approaches
the CTR: 4/ 12
In many realistic scenarios, node positions are not known in
advance (for instance, sensors spread ... data
[SantiBlough03]:
– reducing the transmitting range of about 40 % with respect to CTR yields a
graph in which 90% of the nodes are connected
5
th
ACM MobiHoc – Tokyo, May 24, 20 04
I...
Topology Control in Wireless Ad Hoc Networks phần 5 ppsx
... simulating
mobile ad hoc networks
5
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ACM MobiHoc – Tokyo, May 24, 20 04
Istituto di
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Mobile networks
Mobility: 1/10
Which is the impact of mobility on TC?
– Increased ... w.h.p.
5
th
ACM MobiHoc – Tokyo, May 24, 20 04
Istituto di
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e Telem atica
The mobile CTR
Mobility: 4/ 10
With homogeneous topology control, message overhead is not an...
Topology Control in Wireless Ad Hoc Networks phần 7 ppt
... sleep:idle:rx:tx
min
:tx
max
ratio is
– 0.056 : 1 : 1 : 1. 044 : 1 .41 8 in a CISCO Aironet 802.11 wireless card
– 0 .44 0 : 1 : 1.006 :0.872 : 1.1 14 in a Medusa II sensor node
Open issue: how do these ... reconfiguration?
o Preliminary step in this direction: the determination of the information exchange
period for the LMST protocol [Li et al.03b]
5
th
ACM MobiHoc – Tokyo, May...
Topology Control in Wireless Ad Hoc Networks phần 8 ppt
... on-line at the following URL:
http://www.imc.pi.cnr.it/~santi
A survey paper on TC:
P. Santi, Topology Control in Wireless Ad Hoc and Sensor Networks ,
Tech. Rep. IIT-TR- 04/ 2003, Istituto di Informatica ... packets getting into infinite loops!
1mW
10mW
S
D
n
10
n
1
10mW
5
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ACM MobiHoc – Tokyo, May 24, 20 04
Istituto di
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CLUSTERPOW vs. NTC-PL
Level-...
Topology Control in Wireless Ad Hoc and Sensor Networks phần 1 doc
... 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 ... Connectivity: Stationary Networks 39
4. 1 TheCTRinDenseNetworks 42
4. 2 TheCTRinSparseNetworks 46
4. 3 The CTR with Different Deployment Region and Node Distributio...
Topology Control in Wireless Ad Hoc and Sensor Networks phần 2 pps
... 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 ... has
Topology 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 typ...
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