security in wireless ad hoc and sensor networks pdf

... 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, ... 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 ... 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”...

Ngày tải lên: 22/06/2014, 01:20

... http://www.simpopdf.com 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 ... 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, ... 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 new results and...

Ngày tải lên: 27/06/2014, 00:20

... 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 ... lifetime, and mobility modeling, and on the design of energy-efficient protocols. Dr. Santi has contributed more than twenty papers in the field of wireless ad hoc and sensor networking, and has been involved ... book. Although, in general, topology control techniques can be used both in ad hoc and in sen- sor networks, some of them are more useful for application in sensor networks (Chapters 4, 6, 7, 8, 10), and...

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 ... model of ad hoc network. Since sensor networks are a subclass of ad hoc networks, this model applies to this type of networks also. 2.1 The Wireless Channel Nodes in ad hoc and sensor networks ... diffraction and scattering. Reflection occurs Topology Control in Wireless Ad Hoc and Sensor Networks P. Santi  2005 John Wiley & Sons, Ltd 1 Ad Hoc and Sensor Networks 1.1 The Future of Wireless...

Ngày tải lên: 14/08/2014, 14:20

... the routing and MAC layer (see Figure 3.5). 3.4.1 Topology control and routing The routing layer is responsible for finding and maintaining the routes between source/ destination pairs in the network: ... 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...

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 ... instead of along at least one single Topology Control in Wireless Ad Hoc and Sensor Networks P. Santi  2005 John Wiley & Sons, Ltd THE RANGE ASSIGNMENT PROBLEM 83 number of noncanonical points ... layers), the advantage of using unidirectional links is questionable. For instance, Marina and Das have recently observed that, in case of routing protocols, the high overhead needed to handle unidirec- tional...

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 ... to determine the number and identity of neighbors within the maximum transmitting range and to build an order on this neighbor set (based, for instance, on distance or on link quality). In a certain ... edge (u, v) ∈ E k if and only if δ(u,v) ≤ d k (u),whered k (u) is the distance between node u and its k-closest neighbor. Topology Control in Wireless Ad Hoc and Sensor Networks P. Santi  2005...

Ngày tải lên: 14/08/2014, 14:20

... each node in N LMST (u), and by removing the link (or adding the reverse link) in case it is unidirectional. In our example, we assume that the generated topology is made symmetric by removing unidirec- tional ... for ad hoc networks in which nodes regularly exchange messages between them. In (Ramanathan and Rosales-Hain 2000), Ramanathan and Rosales-Hain introduce another TC heuristic for mobile networks, ... as by the battery level, and so on. In other words, contrary to what is assumed in most of the TC approaches proposed so Topology Control in Wireless Ad Hoc and Sensor Networks P. Santi  2005...

Ngày tải lên: 14/08/2014, 14:20

Ngày tải lên: 14/08/2014, 14:20

Ngày tải lên: 14/08/2014, 14:20

... to the increasing use of wireless communication and net- work community interest in mobile computing, industry, and academia have granted a special attention to Mobile Ad hoc and Sensor Networks ... attacks in wireless networks, especially in Mobile Ad hoc and Sensor Networks (MASNets). In this article, we propose a formal approach for digital investigation of security attacks in wireless networks. ... MASNets Defining a framework for digital investigation in wireless networks, especially sensor and ad hoc networks, turns out to be more tricky and challenging than in wireline networks. To do so, a set of...

Ngày tải lên: 21/06/2014, 02:20

... 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 ... distribution, and 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 ... 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...

Ngày tải lên: 22/06/2014, 22:20

... of implementing certain security technologies is too high relative to the potential risk and therefore not worth pursuing. 15 Security for Wireless Ad Hoc Networks, by Farooq Anjum and Petros ... appear in the mobile wireless environment. Application and services in a mobile wireless network can be a weak link as well. In these networks, there are often proxies and software agents running in ... key in each packet, which is inefficient given the severe bandwidth constraints in sensor networks. This leads to an overhead of approximately 24 bytes per packet. This is significant consid- ering...

Ngày tải lên: 25/03/2014, 12:07

... 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 ... 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 ... 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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Ngày tải lên: 14/08/2014, 14:20

Ngày tải lên: 14/08/2014, 14:20

Ngày tải lên: 14/08/2014, 14:20

Ngày tải lên: 14/08/2014, 14:20