Topology Control in Wireless Ad Hoc Networks phần 7 ppt

... 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 24, 2004 Istituto di Informatica e ... reconfiguration o In general, there is a trade off between the frequency of re-execution of the TC protocol and “quality” of the topology o Open issue: given a certain constr...

Ngày tải lên: 14/08/2014, 14:20

... 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 ... in which CLUSTERPOW is more efficient than NTC- PL, or in which the contrary holds  Intuitively, NTC-PL is more efficient in the uplink (from u to n 1 ), while CLUSTER...

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... 2004 Istituto di Informatica e Telem atica Topology control: an informal definition Topology control: the art of coordinating nodes’ decisions regarding their transmitting ranges, in order to generate ... network capacity Introduction: 1 /7 5 th ACM MobiHoc – Tokyo, May 24, 2004 Istituto di Informatica e Telem atica Topology Control in Wireless Ad Hoc Networks Paolo S...

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... power the minimum level such that the corresponding routing table contains all the nodes in the network  Setting the power to this minimum level achieves the three goals of: – maximizing network ... CTR: 10/12  In [Narayanaswamy et al.02], the authors introduce COMPOW, a protocol that attempts to determine the CTR for connectivity in a distributed way  Nodes maintain a routing table...

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... 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 ... what? u v w z Finding the optimal RA:  Connect each node to the closest neighbor In this case is easy: connect v to w and w to v But in general? 5 th ACM MobiHoc – Tokyo, May 24, 200...

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... MobiHoc – Tokyo, May 24, 2004 Istituto di Informatica e Telem atica Energy-efficient broadcast (2) Energy-efficient communication: 7/ 7  [Cagali et al.02] and [Liang02]: the task of finding the ... periodical topology control 5 th ACM MobiHoc – Tokyo, May 24, 2004 Istituto di Informatica e Telem atica RNG, GG, and other routing graphs (2) Energy-efficient communication: 5 /7  Other r...

Ngày tải lên: 14/08/2014, 14:20

... simulating mobile ad hoc networks 5 th ACM MobiHoc – Tokyo, May 24, 2004 Istituto di Informatica e Telem atica Mobile networks Mobility: 1/10  Which is the impact of mobility on TC? – Increased ... (similar to KNeigh): – at the beginning, every node orders its neighbors (set of nodes in the maximum transmitting range) according to some criterion (e.g., link quality) – then, every...

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... 2004 Istituto di Informatica e Telem atica Open issues Open issues: 1/11  Considerable body of research devoted to TC in ad hoc networks, but several aspects have not been carefully investigated ... properties) using these distributions 5 th ACM MobiHoc – Tokyo, May 24, 2004 Istituto di Informatica e Telem atica More realistic network models Open issues: 2/11  Ad hoc network mod...

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... 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 ... protocol 1 67 14.4 A COMPOW inefficiency 168 14.5 Intuition behind the CLUSTERPOW topology control/ routing protocol . 170 14.6 Routing tables of node u 171 14 .7...

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... 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 typical features of wireless ad hoc ... 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 subc...

Ngày tải lên: 14/08/2014, 14:20