gps based reliable routing algorithms for ad hoc networks

... 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 ... challenges of mobile ad hoc networks to support reliable and efficient communication for distributed computing Mobile Ad Hoc networks present another network model different from traditional communication ... 2.5 Multicast routing in ad hoc networks 2.5.1 Tree -based approaches Tree -based multicast is a well defined concept in cable network Most schemes for offering multicast in cable networks are either...

Ngày tải lên: 23/11/2012, 15:03

... 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 ... Manzoni, “Power-aware routing based on the energy drain rate for mobile ad hoc networks, ” in Proceedings of the 11th IEEE International Conference on Computer Communications and Networks (ICCCN ’02), ... 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...

Ngày tải lên: 22/06/2014, 19:20

... critical part of ad hoc wireless sensor networks EARP is well suited for sensor networks due to its ability to adapt to the environment and make routing decisions based on the Energy-Aware Routing Protocol ... University of California, Los Angeles, Calif, USA, 1999 [16] C E Perkins, E M Royer, S R Das, and M K Marina, “Performance comparison of two on-demand routing protocols for ad hoc networks, ” IEEE ... source routing in ad hoc wireless networks, ” in Mobile Computing, vol 353, chapter 5, pp 153–181, Kluwer Academic, Boston, Mass, USA, 1996 [4] G Kunito, K Yamazaki, H Morikawa, and T Aoyama, “An ad- hoc...

Ngày tải lên: 23/06/2014, 00:20

... 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 ... From geographic routing to data storage in sensor networks, the discovery of the resources shared is a vital feature of wireless ad hoc networks The performances of the grid based resource discovery ... 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...

Ngày tải lên: 05/10/2015, 21:22

... scenarios (I) Traditional AODV with minimum hop routing for CDMA ad hoc mobile networks using omnidirectional antennas (II) Proposed AODV with energy as routing metric for CDMA ad hoc mobile networks ... antennas (III) Traditional AODV with minimum hop routing for CDMA ad hoc mobile networks using directional antennas (IV) Proposed AODV with energy as routing metric for CDMA ad hoc mobile networks using ... higher overhead ENERGY AWARE AODV PROTOCOL Ad hoc on-demand distance vector routing (AODV) is used for ad hoc networks to create routes as they are needed Given the same sequence number, traditional...

Ngày tải lên: 22/06/2014, 22:20

... 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

... attacks [4] Studies of secure cluster routing based on multiple layers in ad hoc networks have been carried out using “authenticated routing for ad hoc networks (ARAN) [5] and in [4, 6] In this ... cluster routing protocols in ad hoc networks, and briefly overview security goals, common techniques for authentication, and threshold cryptosystems, as well as related work for securing ad hoc networks ... should be extremely beneficial for reducing routing table size 2.2 Security protocol in ad hoc networks The security requirement, which typically strives for ad hoc networks security goals like...

Ngày tải lên: 23/06/2014, 00:20

... 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, ... performance wireless communication is needed These factors, amongst others, have motivated the continuous research and development efforts to improve the performance of ad hoc networks Ad hoc ... motivation for us is that much work on evaluating capacity of ad hoc networks has been done through simulations Simulation is a good straightforward method to evaluate the capacity of ad hoc networks...

Ngày tải lên: 02/10/2015, 12:56

... ad hoc networks, ATM networks, spread-spectrum communication, and error control coding His current areas of research interest are mobile ad hoc networks, cellular IP networks, broadband ATM networks, ... with signaling for Ad Hoc networks, ” ACM Computer Communication Review, vol 28, no 3, pp 5–26, 1998 [17] J.-H Chang and L Tassiulas, “Energy conserving routing in wireless ad- hoc networks, ” in ... current routing protocols for Ad Hoc mobile wireless networks, ” IEEE Pers Commun., vol 6, no 2, pp 46–55, 1999 [3] T X Brown, S Doshi, and Q Zhang, “Optimal power aware routing in a wireless Ad Hoc...

Ngày tải lên: 23/06/2014, 00:20

... broadcasting/multicasting in wireless ad hoc networks Our focus is on establishing source-initiated multicast trees to maximize network operating time in energy-limited wireless ad hoc networks with single or ... 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 Conference ... November-December 2004 [12] S Guo and O W W Yang, “Formulation of optimal tree construction for maximum lifetime multicasting in wireless ad hoc networks with adaptive antennas,” in Proceedings of IEEE...

Ngày tải lên: 22/06/2014, 22:20

... 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 ... Joan 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 ... “Performance analysis of the CONFIDANT protocol: Cooperation of nodes - fairness in dynamic ad- hoc networks, ” in Proceedings of IEEE/ACM Workshop on Mobile Ad Hoc Networking and Computing (MobiHOC)...

Ngày tải lên: 15/03/2014, 04:20

... 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) J Blum, A Eskandarian, A reliable ... 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 ... 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...

Ngày tải lên: 20/06/2014, 22:20

... or indirect path for packet transmission based on updated table Korakis et al [6] extended CoopMACI for ad hoc network environment It is very similar to CoopMACI approach, but adds some minor ... 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 ... 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

... delivery 2.2 Comparisons of Routing Protocols for WSNs In general, WSN routing protocols can be classified as flat -based routing, hierarchical -based routing, or location -based routing, depending on the ... location -based routing algorithms in WSNHA The location information of all the sensor nodes in WSNHA can be stored This makes location -based routing most suitable for WSNHA Location -based routing ... decrease of performance for packet average delay The performance for overhead of WSNHA-LBAR and LAR is very close, and the performance for residual energy ratio of three routing algorithms is...

Ngày tải lên: 21/06/2014, 05:20

... considerations MobySpace routing achieves lowcost but has a poor delay performance (iii) Random routing This protocol is created ad hoc for comparison with sociable routing Basically, it has ... destination but, most of the time, its cost is unbearable for real networks We use epidemic routing for a lower bound delay performance (ii) MobySpace routing This scheme, introduced in [10], considers ... context-aware adaptive routing for delay-tolerant mobile networks, ” IEEE Transactions on Mobile Computing, vol 8, no 2, pp 246–260, 2009 [12] P Hui, J Crowcroft, and E Yoneki, “BUBBLE rap: socialbased forwarding...

Ngày tải lên: 21/06/2014, 11:20

... return 1; } SlowFading FastFadingInfo double getSlowFading() { return 1; } double getSlowFading(SlowFadingInfo ∗ sfi) { return 1; } GroundBasedShadowing SlowFadingInfo Figure 5: Radio channel manager ... RadioChannelManager ∗ rcm; RadioChannelManager PathLoss ∗ pl; ReceiverNoise ∗ rn; FastFading ∗ ff; SlowFading ∗ sf; FastFading double getFastFading() { return 1; } double getFastFading(FastFadingInfo ... subject to radio channel effects Such a header is added to the bytes of DL-PDU payload, similarly to the UDP and IP headers as presented in Figure This DL-PDU payload includes the bits of several MAC-PDU...

Ngày tải lên: 21/06/2014, 23:20

... suppression for direct-sequence spread-spectrum CDMA,” IEEE Transactions on Communications, vol 42, no 12, pp 3178– 3188, 1994 [7] U Mitra and H V Poor, “Adaptive receiver algorithms for near-far ... the spreading factor and the channel length on the performance of the algorithms is also studied It is shown that the performance of the algorithms depends not only on SNR but also on the direction ... and BP algorithms is provided in Section Section presents our main theoretical results on the performance of the WP and BP algorithms Simulation results validating our EURASIP Journal on Advances...

Ngày tải lên: 22/06/2014, 23:20

... Estimation Algorithms for OFDM 1471 40 channel and Scheme has additional computation in each iteration Based on these preliminary simulations, it appears that Scheme has the best performance without additional ... help much as our algorithms have already achieved near-optimal performance Thus, our algorithms are able to achieve nearoptimal performance by using very few pilot symbols both for slowly and fast ... the error in the noise variance estimate will degrade channel estimation accuracy We performed such a EM -Based Channel Estimation Algorithms for OFDM 1469 35 100 30 10−1 20 BER Iterations 25...

Ngày tải lên: 23/06/2014, 01:20