ad hoc wireless networks architectures and protocols chapter 5 ppt

... of routing protocols performance on the movement pattern used in the simulated environment. For the RPGM model, we use four groups of 15 nodes, 12 3 456 0 .5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5 The physical ... first 1 5 10 152 0 253 0 354 0 0.8 0.9 1 1.1 1.2 1.3 1.4 1 .5 1.6 Speed (m/sec) Goodput improvement ratio RPGM RWP Figure 12: Goodput improvement ratio (Bypass-AODV/AODV). 1 5 10 15 20 25 30 35 40 0 ... Fast Track project FT 20 05- 16. References [1]C.E.PerkinsandE.M.Royer,“Theadhocon-demand distance vector protocol,” in Ad Hoc Networking, pp. 173–219, Addison-Wesley, Reading, Mass, USA, 2001.

Ngày tải lên: 21/06/2014, 11:20

... 6 Ad Hoc Networks in the overall wireless network classification? Most researchers will view ad hoc wireless networks as a special subset of wireless networks. In fact, the ad hoc radio technology ... Perkins and. .. complex environments such as urban grids and battlefields 20 Ad Hoc Networks Chapter 8: QoS Issues in ad hoc networks QoS support is critical in ad hoc networks ... network and transport protocol areas (routing, multicast, ad hoc TCP and streaming, etc). Another important family of ad hoc networks, the sensor networks, can in turn be viewed as a subset of ad hoc

Ngày tải lên: 14/08/2014, 13:20

... designed specifically for ad hoc networks. Most of these protocols attempt to adapt to the network dynamics in ad hoc networks. The primary goal of ad hoc multicasting protocols should be to construct/maintain ... Parallel and Distributed... mobile ad hoc networks In Proc of ACM Mobihoc ’02, pp 194-2 05, 2002 [ 25] J Wu and F Dai Broadcasting in ad Hoc networks based on self-pruning Proc ... 2000: 56 5 -57 4 [27]... 2003 [13] C E Perkins and E M Royer Ad hoc On-Demand Distance Vector Routing Ad Hoc Networking, edited by C E Perkins, Addison-Wesley, 2001 [14] E M Royer and

Ngày tải lên: 14/08/2014, 13:20

... Sensor Networks? ? ?Architectures and Protocols Chapter 1 - Introduction to Wireless Sensor Networks Chapter2 - The Development of Wireless Sensor Networks Chapter 3 - The Physical Layer Chapter4 ... and later standardized as IEEE 802. 15. 1! has a raw data rate of 1 Mb/s;!®l, [9] and IEEE 802. 15. 3, released in June 2003, has a maximum raw data rate of 55 Mb/s!‘°] Both the 802.11 and 802. 15 ... Callaway, Edgar H 'Wireless sensor networks : architectures and protocols / Edgar H Callaway p em Includes bibliographical references and index 0-8493-1823-8 1 Sensor networks 2 Wireless LANs I

Ngày tải lên: 20/10/2022, 13:50

... Probability of good channel (p) 0. 45 0 .50 .55 0.60. 65 0.70. 75 0.80. 85 0.9 Channel MAC (imperfect prediction): n = 5 IEEE 802.11: n = 5 Channel MAC (perfect prediction): n = 5 Channel MAC (imperfect prediction): ... of mobile ad hoc networks, IEEE 802.11 presents several drawbacks in the context of ad hoc networks, one of them being its poor throughput performance. Gupta and Kumar introduced a random network ... on Advances in Signal Processing Volume 2009, Article ID 368209, 17 pages doi:10.1 155 /2009/368209 Research Article Channel MAC Protocol for Opportunistic Communication in Ad Hoc Wireless Networks

Ngày tải lên: 21/06/2014, 22:20

... 5. 4 Qualitative Paradigms 5. 5 Hazard Identification 5. 5.1 Medical Evaluation and Surveillance 5. 5.2 Hazards in Indoor Air 5. 5.3 Chemicals (of Nonbiological Origin) 5. 6 Biological Contaminants ... (Bioaerosols) 5. 6.1 Bacteria 5. 6.2 Molds 5. 6.3 Viruses 5. 7 Allergy 5. 8 Infection 5. 9 Irritation 5. 10 Toxicity 5. 10.1 Primary Metabolism 5. 10.2 Secondary Metabolism, Antibiotics, and Mycotoxins 5. 11 ... 5. 14.1 Bacterial Endotoxins 5. 14.2 Mycotoxins 5. 15 Exposure Assessment 5. 15. 1 Models 5. 15. 2 Contact-Point Model 5. 16 Medical Aspects © 2003 BY CRC PRESS LLC 5. 16.1 Medical Assessments 5. 16.2

Ngày tải lên: 11/08/2014, 09:21

... the soil and the plant and may be manipulated to improve plant nutrition efficiency and soil conservation. The interaction begins when fungal hyphae arising from spores in the soil and on adjacent ... tocellulosemicrofibrils,cross-linkingthemandrestrainingcellexpansion.Inadditionto astructuralrole,xyloglucanscanbehydrolyzedbyhydrolyticenzymes,andtheoligosac- charidesproducedmayactassignalmolecules( 15, 54). Theplantcellwallcontainsglucanasesandglycosidasesthathydrolyzexyloglucan ... onlyinparasitesbutalsoinmutualisticmicroorganismssuchasRhizobiumspecies(24) andarbuscularmycorrhiza(28). Endoxyloglucanaseactivityincreasesduringgrowthanddevelopmentofroots (55 ). Thisactivitywasconsistentlyhigheratthebeginningofcolonizationandthelogarithmic

Ngày tải lên: 11/08/2014, 15:20

... 2. 45 m 3 Retention time: 2. 15 minutes minimum G-values 50 -s −1 G-t 20000? ?50 000 6 pumps of 6-3000 m 3 /h 30 cm activated carbon 1 25 cm hydro anthracite 50 cm quartz sand Effluent 3? ?5 mm 1 .5? ??2 .5 ... 8.69 2.41 (b) 1996 1997 Copyright © 20 05 by Taylor & Francis 5. 5 NON-POINT NUTRIENT SOURCE CONTROLS: PONDS AND WETLANDS 5. 5.1 I NTRODUCTION Lakes and reservoirs have siltation as well as ... (Chapter 4). The purposes of this chapter are to describe the origins and nature of non-point loading to streams, lakes, and reservoirs, and to discuss certain methods for managing it. Urban and

Ngày tải lên: 11/08/2014, 15:20

... ad hoc networks The first chapter is a forerunner for things to come It primarily motivates the need for ad hoc networks and xxii discusses the evolution of these networks and ... on ad hoc networking technologies. .. networks In fact, the ad hoc radio technology and most of the MAC technology will be driven by the advancements in infrastructure wireless networks ... infrastructure networks So, where do these nets fit 6 Ad Hoc Networks in the overall wireless network classification? Most researchers will view ad hoc wireless networks as a special

Ngày tải lên: 01/06/2014, 00:31

... 124 1 25 126 127 129 131 132 132 134 1 35 137 140 146 150 151 153 155 155 157 157 158 158 158 161 172 176 176 186 190 190 197 197 198 199 200 201 201 202 5. 2.1 5. 2.2 5. 2.3 5. 2.4 5. 2 .5 5.2.6 5. 2.7 ... Case Study: Anomaly Detection for Ad- Hoc Routing Proto- cols 9 .5. Conclusion References Index 251 253 253 254 255 256 256 259 261 264 2 65 269 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com ... on ACKs and Retransmission Timeouts Absolute Impact of Losses 5. 3. 5. 4. 5. 5. 5. 6. 5. 7. Transport Layer for Ad- hoc Networks: Overview Modified TCP TCP-aware Cross-layered Solutions Ad- hoc Transport

Ngày tải lên: 27/06/2014, 00:20

... flooding in LAR and DREAM 8 11 14 28 31 32 36 37 39 40 42 45 46 47 51 54 55 68 76 82 List of Figure xii 3.4 4 .1 4.2 4.3 4.4 4 .5 4.6 4.7 4.8 4.9 5 .1 5. 2 5. 3 5. 4 5. 5 5. 6 5. 7 5. 8 5. 9 6 .1 6.2 ... ad hoc networks in more detail 1. 1.2 Ad hoc Networks Characteristics Mobility: the fact that nodes can be rapidly repositioned and/ or move is the raison d’etre of ad hoc networks ... further add to the need for and the usage of ad hoc networks During the last few years‚ numerous papers and reports have been published on various issues on mobile ad hoc networks

Ngày tải lên: 14/08/2014, 13:20

... in ad hoc networks and is critical for the basic network operations Certain unique combinations of characteristics make routing in ad hoc networks. .. Rezvani, and J A Copeland, ... Keywords: 3. 1 Unicast routing, mobile ad hoc networks, multihop wireless networks, packet radio networks, flooding, proactive routing, on-demand routing, geographic routing Introduction ... Methods for Wireless Networks, ” in Proc of ACM/IEEE MOBICOM ’98, pp 21 32 , Oct 1998 [ 15] B Bensaou, Y Wang, and C C Ko, “Fair Medium Access in 802.11 Based Wireless Ad- Hoc Networks, ”

Ngày tải lên: 14/08/2014, 13:20

... Williams and T Camp Comparision of Broadcasting Techniques for Mobile Ad Hoc Networks In Proceedings of ACM MobiHoc, pages 1 94 2 05, 2002 [59 ] J Wu and F Dai A Generic Distributed Broadcast ... Protocol RFC 1 058 , 1988 [20] G Holland and N Vaidya Analysis of TCP Performance over Mobile Ad Hoc Networks ACM/Kluwer Wireless Networks, 8(2/3):2 75? ??288, 2002 [21] Y-C Hu and D Johnson ... these protocols have been proposed for use in ad hoc networks. These protocols are broadly classified into the two traditional categories: distance vector and link state. In distance vector protocols,

Ngày tải lên: 14/08/2014, 13:20

... K. Tang and M. Gerla. Random access MAC for efficient broadcast support in ad hoc networks. In Proc. of IEEE WCNC 2000. P. Mohapatra, J. Li, and C. Gui. QoS in mobile ad hoc networks. Special ... Next-Generation Wireless Multimedia Communications Systems in IEEE Wireless Communications Magazine, June 2003. 122 Multicasting in Ad Hoc Networks [34] [ 35] TRANSPORT LAYER PROTOCOLS IN AD HOC NETWORKS ... 5. 4, 5. 5 and 5. 6 discuss in detail specific protocol instances of the different approaches. Finally, Section 5. 7 summarizes the key conclusions of the discussions in the chapter. TCP and Ad- hoc

Ngày tải lên: 14/08/2014, 13:20

... communication in ad hoc networks and then discuss the use of communication-time and idle-time energy conservation. 154 Energy Conservation Energy Consumption in Ad Hoc Networks 155 In general there ... the wireless communication device when the node is idle [26] [34] [56 ] [57 ] [ 65] [69] [72] [ 35] . Communication in ad hoc networks necessarily drains the batteries of the participating nodes, and ... over Three Routing Protocols for Mobile Ad Hoc Networks ,” in Proceedings of ACM MOBIHOC 2001, Long Beach, CA, Oct 2001. J. Liu and S. Singh, “ATCP: TCP for Mobile Ad Hoc Networks, ” in IEEE Journal

Ngày tải lên: 14/08/2014, 13:20

... of ad hoc mobile... Zheng, J C Hou, and L Sha Asynchronous wakeup for ad hoc networks In 4th ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc), ... energy in wireless ad hoc networks Technical... protocol with signalling for ad hoc networks ACM SIGCOMM Computer Communication Review, 28: 5? ??26, July 19 98 [ 58 ] S Singh, M Woo, and ... routing protocols for mobile ad hoc networks Mobile Networks and Applications, 6(3):239–249, June 2001 [17] L M Feeney A QoS aware power save protocol for wireless ad hoc networks

Ngày tải lên: 14/08/2014, 13:20

... QoS enabled Ad- hoc Networks and concludes the... directional antennas in mobile ad hoc networks ACM MOBIHOC, 2002 [ 15] P.Gupta and P.R.Kumar The capacity of wireless networks IEEE ... Infrastructure mode and the ad- hoc mode These modes correspond... layer in WLANs and ad- hoc networks Section 8 .5 describes various 232 QoS Issues in Ad- hoc Networks solutions ... D.Maltz, and J.Broch Dynamic source routing for mobile ad hoc networks IETF MANET Working Group, 199 8 [9] E.Royer and C-K.Toh A review of current routing protocols for ad- hoc wireless

Ngày tải lên: 14/08/2014, 13:20

... 1019 such that: m c d (mod n) 157 0 1019 (mod 3337) m = ( 157 0) 51 2 ì ( 157 0) 256 ì ( 157 0) 128 ì ( 157 0) 64 ì ( 157 0) 32 ì ( 157 0) 16 ì ( 157 0) 8 ì ( 157 0) 2 ì ( 157 0) = 39 250 00 ( mod 3337) 688 Thus, the ... 4 Using the MD5 algorithm, compute the message digest: h ≡ H(m||x) (mod q) ≡ H(1 35| |4)( mod 11) h ≡ af 4732711661 056 eadbf 798ba191272a( hexadecimal) ≡ 23298 457 541 950 4 758 88924 957 83493 653 72714 ( mod ... two-digit number as shown in Table 5. 4. Example 5. 6 Encode the message ‘INFORMATION SECURITY’ using Table 5. 4. m = (091406 151 813012009 151 40019 050 321180920 25) Choose p = 47 and q = 71.Then n = pq = 47...

Ngày tải lên: 09/08/2014, 06:23

... an ad hoc network, as we shall see below. I address the general issue of routing in mobile ad hoc networks separately in the next section. The shared wireless environment of mobile ad hoc networks ... Introduction SECURITY AND QUALITY OF SERVICE IN AD HOC WIRELESS NETWORKS Ensuring secure transmission and good quality of service (QoS) are key commercial concerns in ad hoc wireless networks as their ... vulnerabilities in mobile ad hoc networks (MANETs) 84 5. 3 Intrusion detection systems: a brief overview 86 5. 4 Requirements for an intrusion detection system for mobile ad hoc networks 88 5. 5 Intrusion detection...

Ngày tải lên: 25/03/2014, 12:07

... Personal, and Local Ad Hoc Wireless Networks M arco Conti 2 M ulticasting Techniques in Mobile Ad Hoc Networks X iao Chen and Jie Wu 3 Qualit y of Service in Mobile Ad Hoc Networks ... switches, and servers). Such systems are sometimes referred to as mobile ad hoc networks (MANETs) [33] or as infrastructure-less wireless networks. 1.2 Mobile Ad Hoc Networks A Mobile Ad hoc ... Chakrabarti and Amitabh Mishra 4 P ower-Conservative Designs in Ad Hoc Wireless Networks Y u-Chee Tseng and Ting-Yu Lin 5 P erformance Analysis of Wireless Ad Hoc Networks...

Ngày tải lên: 03/06/2014, 01:08