transport protocols for ad hoc networks

... not feasible in large ad hoc networks where flooding could be harmful for the performances of the network [4] Therefore a trade off has to be found where nodes send some advertisements in specific ... introduces the reader to an overview of the resource discovery protocols for ad hoc networks The principles of the grid based discovery protocols are explained and the need for an efficient empty ... 1.1 The need for efficient resource discovery protocols in wireless ad hoc networks 1.2 The empty cell problem for grid based resource discovery protocols 1.3...

Ngày tải lên: 05/10/2015, 21:22

... MAC protocols in ad hoc networks Research efforts in the field of access mechanisms for single-channel ad hoc networks have been extensive For example, a multiplicity of single-channel MAC protocols ... of Service Provisioning in Ad hoc Wireless Networks: A Survey of Issues and Solutions Ad Hoc Networks 4, 83–124 (2006) L Kleinrock, F Tobagi, Packet Switching in Radio Channels: Part I-Carrier ... Cooperative Asynchronous Multi-Channel MAC Protocol for Ad Hoc Networks, in 3rd International Conference on Broadband Communications, Networks and Systems, BROADNETS ‘06, 1–10 (2006) S Nethi, J Nieminen,...

Ngày tải lên: 20/06/2014, 22:20

... equality For an ad hoc network, implementation complexity constraints may restrict the power control to adapt power levels for each node, as opposed to optimizing it for each active outgoing link for ... Princeton, NJ, USA, March 2004 [21] H Mahmood and C Comaniciu, “Adaptive spreading/coding gains for energy efficient routing in wireless ad hoc networks, ” in Proceedings of the 61st IEEE Vehicular Technology ... first considering distributed power control design for a given route assignment, which is a classic distributed power control problem for ad hoc networks SIRk = γ∗ , ∗ j (3) Pi = max∗ (i, j)∈Si...

Ngày tải lên: 22/06/2014, 19:20

... the ad hoc transport Protocol (ATP) for mobile ad hoc networks [6] After studying issues with the TCP in ad hoc networks, the authors have taken a new approach using ATP to improve the performance ... comparison of TCP performance over three routing protocols for mobile ad hoc networks, ” in Proceedings of the 2nd International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc ’01), pp 56–66, ... involved in using the TCP in a multipath ad hoc network environment TCP PERFORMANCE IN MULTIPATH AD HOC NETWORKS The TCP was originally designed for wired networks where the packet drop is generally...

Ngày tải lên: 22/06/2014, 22:20

... equality For an ad hoc network, implementation complexity constraints may restrict the power control to adapt power levels for each node, as opposed to optimizing it for each active outgoing link for ... Princeton, NJ, USA, March 2004 [21] H Mahmood and C Comaniciu, “Adaptive spreading/coding gains for energy efficient routing in wireless ad hoc networks, ” in Proceedings of the 61st IEEE Vehicular Technology ... first considering distributed power control design for a given route assignment, which is a classic distributed power control problem for ad hoc networks SIRk = γ∗ , ∗ j (3) Pi = max∗ (i, j)∈Si...

Ngày tải lên: 22/06/2014, 22:20

... affecting the performance of ad hoc networks Taxonomy for performance evaluation of ad hoc networks is presented in Figure 2.1 In the taxonomy, we classify general ad hoc networks into two categories, ... Hybrid Ad Hoc Networks Protocols Performance Delay-Sensitive Services Conventional Protocols MAC Protocls Protocols Supporting QoS Routing Protocls Power Control Figure 2.1： The taxonomy for performance ... channel for transmitting packets The MAC protocol is an important factor that affects the performance of an ad hoc network Since the emergence of ad hoc networks, a lot of MAC protocols have been adopted...

Ngày tải lên: 02/10/2015, 12:56

... acquire in mobile ad hoc networks There are many proposed protocol for multicast routing in mobile ad hoc networks, such as PUMA, ODMRP or MAODV In those protocols, PUMA (Protocol for unified multicasting ... environment The motivation for this work comes from the challenges of mobile ad hoc networks to support reliable and efficient communication for distributed computing Mobile Ad Hoc networks present another ... FOR MULTICAST ROUTING IN MOBILE AD HOC NETWORKS GRADUATION THESIS Faculty of Information Technology Supervisor: Dr Dai Tho Nguyen HA NOI - 2010 -2- ABSTRACT There are many multicast routing protocols...

Ngày tải lên: 23/11/2012, 15:03

... Feigenbaum for many valuable suggestions Message success rate 0.8 R EFERENCES 0.6 [1] C Perkins, Ad Hoc Networking Addison-Wesley, 2000 [2] C.-K Toh, Ad Hoc Mobile Wireless Networks: Protocols ... http://gunpowder.stanford.edu/˜laik/projects/adhoc/mitigating.pdf [5] L Buttyan and J P Hubaux, “Enforcing service availability in mobile ad- hoc WANs,” in IEEE/ACM Workshop on Mobile Ad Hoc Networking and Computing (MobiHOC), Boston, ... “Stimulating cooperation in self-organizing mobile ad hoc networks, ” ACM Journal for Mobile Networks (MONET), special issue on Mobile Ad Hoc Networks, summer 2002 [Online] Available: http://lcawww.epfl.ch/Publications/Buttyan/TR01“˙046.ps...

Ngày tải lên: 15/03/2014, 04:20

... SECURITY FOR WIRELESS AD HOC NETWORKS Farooq Anjum and Petros Mouchtaris SECURITY FOR WIRELESS AD HOC NETWORKS SECURITY FOR WIRELESS AD HOC NETWORKS Farooq Anjum and Petros ... take in order to reach their destinations Networks that support the ad hoc architecture are typically called wireless ad hoc networks or mobile ad hoc networks (MANET) We will use these two terms ... these networks The increased vulnerabilities of ad hoc networks and the limitations of existing security solutions designed for wireline networks will become clearer throughout the book Ad hoc networks...

Ngày tải lên: 25/03/2014, 12:07

... focal aspects in 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 projects ... AD HOC NETWORKS Technologies and Protocols This page intentionally left blank AD HOC NETWORKS Technologies and Protocols Edited by PRASANT MOHAPATRA University of California‚ Davis ... characteristics of 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 Rapid...

Ngày tải lên: 01/06/2014, 00:31

... cognitive radio ad hoc networks Ad Hoc Netw Elsevier 7(5), 810–836 (2009) doi:10.1016/j adhoc.2009.01.001 HB Salameh, M Krunz, Channel access protocols for multihop opportunistic networks: challenges ... Radio An Integrated Agent Architecture for Software Defined Radio Ph.D dissertation (KTH Royal Institute of Technology, 2000) IF Akyildiz, W-Y Lee, KR Chowdhury, Crahns: cognitive radio ad hoc ... secondary users is a major challenge in distributed multiuser cognitive radio networks If legacy MAC protocols designed for traditional networks were to be used in CRNs, all of the secondary users that...

Ngày tải lên: 20/06/2014, 21:20

... cognitive radio ad hoc networks Ad Hoc Netw Elsevier 7(5), 810–836 (2009) doi:10.1016/j adhoc.2009.01.001 HB Salameh, M Krunz, Channel access protocols for multihop opportunistic networks: challenges ... Radio An Integrated Agent Architecture for Software Defined Radio Ph.D dissertation (KTH Royal Institute of Technology, 2000) IF Akyildiz, W-Y Lee, KR Chowdhury, Crahns: cognitive radio ad hoc ... secondary users is a major challenge in distributed multiuser cognitive radio networks If legacy MAC protocols designed for traditional networks were to be used in CRNs, all of the secondary users that...

Ngày tải lên: 20/06/2014, 22:20

... field Type has four values: is for cluster member’s status message; is for cluster head’s first message; is for cluster head’s invitation message; is for cluster head’s last message The vehicle ... Krishnan, T Talty, Performance evaluation of safety applications over DSRC vehicular ad hoc networks ACM-Veh Ad hoc Netw 1, 1–9 (2004) F Yu, S Biswas, A self reorganizing MAC protocol for inter-vehicle ... F Borgonovo, A Capone, M Cesana, L Fratta, ADHOC MAC, New MAC architecture for ad hoc networks providing efficient and reliable point-topoint and broadcast services Wirel Netw 10, 359–366 (2004)...

Ngày tải lên: 20/06/2014, 22:20

... duration information from the RTS, CTS packets, and from MAC layer headers which are transmitted at Mbps Two points are worth mentioning when ad hoc network operates under heavy load and fast fading ... 802.11 frame format for IrcMAC protocol A Simulation setup For fairness, all protocols are compared using the same simulation setup The channel is assumed to have flat Rayleigh fading for the duration ... throughput performance is compared for increasing number of source nodes in the ad hoc network All the nodes are randomly placed in a radius of 200 m Concurrent transmissions always lead to collisions...

Ngày tải lên: 21/06/2014, 03:20

... (4, 1) (m − 1, 1) (m, 1) Figure 11: The mobile ad hoc networks model For clarity, an example is presented for explanatory purposes Let the ad hoc networks be represented by a × model, while the ... multiplications when performing ECDH, thus reducing the CPU overhead significantly Therefore, the proposed scheme is highly promising for dynamic key operations in large-scale ad hoc networks This study ... numerous mobile nodes in ad hoc networks [13] [14] [15] [16] References [1] S M Das, H Pucha, and Y C Hu, “Distributed hashing for scalable multicast in wireless ad hoc networks, ” IEEE Transactions...

Ngày tải lên: 21/06/2014, 11:20

... revocation scheme for mobile ad hoc networks, ” Ad Hoc Networks, vol 6, no 1, pp 17–31, 2008 [25] T Moore, J Clulow, S Nagaraja, and R Anderson, “New strategies for revocation in ad- hoc networks, ” in ... scheme for mobile ad hoc networks: an analysis,” EURASIP Journal on Wireless Communications and Networking, vol 2005, no 4, pp 579– 589, 2005 [14] L Zhou and Z J Haas, “Securing ad hoc networks, ” ... discovery in mobile ad- hoc networks, ” Computer Communications, vol 30, no 7, pp 1498–1512, 2007 [23] R Li, J Li, P Liu, and H.-H Chen, “On-demand publickey management for mobile ad hoc networks, ” Wireless...

Ngày tải lên: 21/06/2014, 11:20

... Romaszko and C Blondia, “A MAC protocol for wireless ad hoc networks with power control,” in Proceedings of the International Workshop on Wireless Ad- hoc Networks (IWWAN ’05), no 54, London, UK, ... “Body, personal, and local ad hoc wireless networks, ” in The Handbook of Ad Hoc Wireless Networks, chapter 1, pp 3–24, CRC Press, Boca Raton, Fla, USA, 2002 [26] S Xu and T Saadawi, “Does IEEE 802.11 ... wireless ad hoc networks, ” Computer Networks, vol 38, no 4, pp 531–548, 2002 [28] F.-Y Hung and I Marsic, “Effectiveness of physical and virtual carrier sensing in IEEE 802.11 wireless ad hoc networks, ”...

Ngày tải lên: 21/06/2014, 22:20

... MAC-LAYER FOR ASSISTANCE: TRANSMISSION STRATEGY FOR WIRELESS AD HOC NETWORKS In order to extend the transmission strategy leveraging PNC from a unidirectional line to networks, we consider a broadcast-relay ... 10 Fram es b 0 Distance 10 n (a) Traditional rectangular broadcast (b) Traditional hexagonal broadcast (c) Traditional unicast (d) PNC unicast, multicast, broadcast Figure 14: The comparison of ... (a) and (b) are for the traditional strategy of broadcast case in rectangular and hexagonal networks, respectively, and Surface (c) shows the unicast case of traditional strategy For the multicast...

Ngày tải lên: 21/06/2014, 22:20

... for vehicular traffic management,” in Proceedings of the 4th ACM International Workshop on Vehicular Ad Hoc Networks (VANET ’07), pp 29–38, Montreal, Canada, September 2007 [4] G Bianchi, “Performance ... messages,” it - Information Technology, vol 50, no 4, pp 230– 236, 2008 [20] M Torrent-Moreno, P Santi, and H Hartenstein, “Distributed fair transmit power adjustment for vehicular ad hoc networks, ” ... bytes for a certificate, 54 bytes for a signature, and 200 bytes of available payload, which adds up to a default packet size of 382 bytes A key decision in VANET research concerns the assumed radio...

Ngày tải lên: 21/06/2014, 22:20