greedy perimeter stateless routing for wireless networks

... == greedy) { greedy forwarding; if (fail) mode = perimeter; } if (mode == perimeter) { if (have left local maxima) mode = greedy; else (right-hand rule); } GPSR greedy fails Greedy Forwarding greedy ... less collision Greedy Perimeter Stateless Routing (GPSR) Ì Maintenance r r all nodes maintain a single-hop neighbor table Use RNG or GG to make the graph planar Ì At source: r mode = greedy Ì Intermediate ... 802.11 MAC Ì Link bidirectionality Geographic Routing: Greedy Routing Closest to D S A D - Find neighbors who are the closer to the destination - Forward the packet to the neighbor closest to...

Ngày tải lên: 12/07/2014, 09:20

... protocols for routing, data forwarding, topology management, information processing, data querying and security 1.3 Research Challenges for wireless sensor networks Routing As the wireless sensor ... sensor networks are static Therefore, the routing protocols designed for MANET are not optimal for wireless sensor networks because mobility is not the core issue anymore Instead, wireless sensor networks ... used for the local routing while others are used for global routing For example, the routing protocols proposed in [41, 57] are hierarchical-based For location-based routing, geographical information...

Ngày tải lên: 11/09/2015, 16:06

... environment GDSTR forwards a packet using greedy forwarding and when it fails, it switches to tree routing until greedy forwarding can be resumed Extending greedy forwarding to 3D is straightforward as ... techniques include Greedy Perimeter Stateless Routing (GPSR) [12], by-pass routing in Priority-based Stateless Geo -Routing (PSGR) [6] and RequestResponse (RR) in Beacon-less routing (BLR) [5] ... deterministic routing algorithm is given by Ω(d3 ) Each node forwards packet by greedy until a void node occurs A void node performs four different types of random walk (RW) for recovery to greedy forwarding...

Ngày tải lên: 16/10/2015, 15:38

... Radio Link Performance of Third Generation (3G) Technologies For Wireless Networks Gustavo Nader (Abstract) Third generation wireless mobile communication networks are characterized ... Three header formats are used: one for MCS-7, MCS-8 and 27 MCS-9 (MCS’s with four payload units), one for MCS-5 and MCS-6 and one for MCS-1 to MCS-4 The first and second formats are for 8PSK modulation, ... convolutional code for forward error correction (FEC) and a 40-bit FIRE code for BCS (optionally Forward Error Correction) CS-2 and CS-3 are punctured versions of the same FEC code as CS-1 For CS-1 the...

Ngày tải lên: 26/04/2013, 11:15

... connection/interface point Contact product management or TAC for more information X X Connectivity Solutions and Services for Wireless Networks Enabling Voice, VoIP, Messaging and IP Data Fiber ... business strategy when it comes time for any future upgrades, where flexibility is crucial for ongoing success For ‘Flexible Network’ network solutions, look to ADC for the copper and fiber infrastructure ... Protection for Coaxial lines also available (i.e DS3) (Lit# 101039AE) Multimedia Converion Solutions An optical extension platform providing a carrier-class, intelligent, scalable platform for Ethernet...

Ngày tải lên: 17/01/2014, 11:20

... proposes an opportunistic network coded cooperation scheme for small networks [13] To achieve a potential larger diversity gain of large wireless networks, in this paper, we propose Feedbackbased network ... performance Exploiting the network coding technology, ANCC adapts to the changing network topology to combat the wireless fading, which significantly outperforms Zhang et al EURASIP Journal on Wireless ... system mutual information can be written as the sum of the Shannon formula with all the instantaneous SNRs For fairness, the energy saved in the relay phase of FANCC is added uniformly to the terminals...

Ngày tải lên: 20/06/2014, 22:20

... “Data dissemination in wireless sensor networks with network coding,” aim at applying network coding in data dissemination problems which may arise in wireless sensor networks, such as software ... information P Sadeghi et al investigate the design of feedbackbased adaptive network coding schemes for packet erasure networks in the last paper “An optimal adaptive network coding scheme for ... them may have been put to operate in a sleep mode Sleep scheduling is frequently used in wireless sensor networks as a means to save the battery, perhaps the most critical resource The authors...

Ngày tải lên: 21/06/2014, 05:20

... single-relay in wireless sensor networks, ” IEEE Transactions on Wireless Communications, vol 7, no 8, Article ID 4600219, pp 3066–3078, 2008 [32] J.-H Chang and L Tassiulas, Routing for maximum ... Huang, Y W Peter Hong, and C C Jay Kuo, “Lifetime maximization for amplify-and-forward cooperative networks, ” IEEE Transactions on Wireless Communications, vol 7, no 5, Article ID 4524272, pp 1800–1805, ... on Information Theory, vol IT-24, no 3, pp 339–348, 1978 [19] Y Liang, H V Poor, and L Ying, Wireless broadcast networks: reliability, security, and stability,” in Proceedings of the Information...

Ngày tải lên: 21/06/2014, 05:20

... From 1992 to 2001, he was with Nortel Networks, where he conducted, led, and directed systemlevel performance modeling and analysis of wireless communication networks and systems In January 2002, ... theory, modulation, equalization, and wireless communications He is an Associate Editor for both the IEEE Transactions on Communications and the IEEE Transactions on Wireless Communications He was Chair ... Calif, USA His research interests include stochastic models, wireless system simulations, and connectivity issues in ad hoc wireless networks Abraham O Fapojuwo received the B.Eng degree (first-class...

Ngày tải lên: 22/06/2014, 22:20

... output of the uplink recovery Multicarrier Access and Routing for Wireless Networking 601 Radio exchange node Control unit Wireless terminals Wireless terminals Tx (1) Rv (i) Rv Tx (N) Tx ... zd;n ) , for n = 0, 1, , L − 1, then enter an FFT which provides the signal ¯ (m Zd;k ) = L−1 k =0 (m zd;n ) e− j2π(kn/L) for k = 0, 1, , L − (15) Multicarrier Access and Routing for Wireless ... compared with the range [−1, 1] for bipolar samples for time-division multiplexed switch modules CONCLUSION We have presented a multicarrier access and routing system for wireless networking Users...

Ngày tải lên: 23/06/2014, 00:20

... SMS4 Encryption Algorithm for Wireless Networks The SMS4 algorithm is a block cipher with 128-bit key and 128-bit input block Encryption ... reversed The key order for encryption is: (rk0 , rk1 , rk31 ) The key order for decryption is: (rk31 , rk30 , rk0 ) Key expansion when encrypting The rki round key used for encrypting in this ... decryption have the same structure, but the round key schedule for decryption is the reverse (goes in the opposite order) of the round key schedule for encryption Terminology (Definitions) 1.1 Zi and ZiJie...

Ngày tải lên: 23/07/2014, 00:18

... problem Traditionally, IEEE 802.11 DCF is designed for wireless LAN (infrastructure networks) , and therefore performs badly in multi-hop wireless networks due to an increase in both hidden/exposed ... Literature Review 2.1 20 Multi-Channel MAC Protocol for Wireless Ad-hoc Networks IEEE 802.11 [26] is the de-facto wireless networking standard for wireless local area network (WLAN) Currently, the ... protocols for wireless ad-hoc networks and also energy-efficient MAC protocols for WSNs Chapter presents the design and evaluation of our traffic-adaptive multi-channel MAC protocol for wireless...

Ngày tải lên: 10/11/2015, 11:29

... Switching Networks , 2nd International Conference on Broadband Networks, vol 2, 2005 [4] Son-Hong Ngo, Xiaohong Jiang, and Susumu Horiguchi, “Hybrid Deflection and Retransmission Routing Schemes for ... Retransmission Routing Schemes for OBS Networks , Workshop on High Performance Switching and Routing, 2006 [5] Jay L Devore, Probability and Statistics for Engineering and the Sciences, Brooks/Cole ... Ngo for answering several of our questions about his paper [4] R EFERENCES [1] C Qiao and M Yoo, “Optical Burst Switching - A New Paradigm for an Optical Internet”, Journal of High Speed Networks, ...

Ngày tải lên: 28/03/2016, 18:51

... close, their performance for packet average delay is very close The performances for overhead of WSNHA-LBAR and LAR is very close, and the performances for residual energy ratio of three routing algorithms ... disseminating information in wireless sensor networks, ” Wireless Networks, vol 8, no 2-3, pp 169– 185, 2002 EURASIP Journal on Embedded Systems [13] D Braginsky and D Estrin, “Rumor routing algorithm for ... Engineering and Computer Science, MIT, May 2006 [23] B Karp and H T Kung, “GPSR: greedy perimeter stateless routing for wireless networks, ” in Proceedings of the 6th Annual International Conference on...

Ngày tải lên: 21/06/2014, 05:20

... algorithm behaviour for single-constrained routing, ” in Proceedings of the IEEE Workshop on High Performance Switching and Routing, pp 302–305, May 2001 E H Callaway, Wireless Sensor Networks: Architectures ... eventually if it is given enough time to forward However, the studies of ant-like routing algorithm on wireless sensor networks are not very sufficient, especially the performance evaluation and comparison ... unicast routing (RAUR) algorithm and provide performance comparison with other routing algorithms We also conduct an approximated mathematical analysis for the RAUR to analyze its performance...

Ngày tải lên: 21/06/2014, 17:20

... we have proposed an energy-aware routing strategy based on GRAdient Cost Establishment (GRACE) for Wireless Sensor Networks The proposed routing strategy outperforms the existing ones with an ... disjoint paths in ad hoc networks, ” Tech Rep., University of California, Oakland, Calif, USA, 2000 U Bilstrup and P A Wiberg, Routing protocol for wireless real-time multihop networks, ” in Proceedings ... chain routing protocol for continuous data dissemination in wireless sensor networks, ” in Proceedings of the 1st International Conference on Intelligent Sensors, Sensor Networks and Information...

Ngày tải lên: 21/06/2014, 23:20

... hybrid mac for wireless sensor networks In SenSys, San Diego, California, USA, 2005 [16] I Rhee, A Warrier, J Min, and L Xu Drand:: distributed randomized tdma scheduling for wireless ad-hoc networks ... preamble mac protocol for duty-cycled wireless sensor networks In SenSys, 2006 [4] O Chipara, C Lu, and J Stankovic Dynamic conflict-free query scheduling for wireless sensor networks In ICNP, 2006 ... Power Control for Wireless Sensor Networks In ACM SenSys, 2006 [11] A Muqattash and M Krunz Powmac: A single-channel power-control protocol for throughput enhancement in wireless ad hoc networks IEEE...

Ngày tải lên: 01/09/2013, 15:23

... Designing for Profitability Cable Routing Paths Creating a reliable, low-maintenance cabling infrastructure for the long-term depends upon proper routing of cables throughout MSCs and BSCs For fiber ... • High quality services Figure Critical Measures for External and Internal Customers Operations: The Custodians of Evolving Networks Wireless networks are in constant change Reconfiguring circuits ... infrastructure Page  Foundation of Connectivity – Design for Craft Efficiency The wireless physical layer is destined to be a hybrid network for the foreseeable future Circuit-switched equipment will...

Ngày tải lên: 21/12/2013, 08:17