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Range Assignment for High Connectivity in Wireless Ad Hoc Networks 245– Our best heuristics have power 75% to 250% more than the cost of the minimumspanning tree (the only easily computable lower bound for the problems).The average power used is 110% more than the cost of the minimumspanning tree.– For our best algorithms, the power required to ensure Symmetric Biconnectivityis on average 61.6% higher than the power required for SymmetricConnectivity. Our heuristics for Symmetric Connectivity are very good [1],but we still do not know the quality of the Symmetric Biconnectivity solutionsour heuristics produce. Note that the minimum power for SymmetricBiconnectivity could be higher than the minimum power for SymmetricConnectivity by a factor of 2 κ , as shown by an example of n nodes beingequidistant on a line.AcknowledgementsWe are grateful to Nickolay Tchervensky for help with the experiments.References1. E. Althaus, G. Calinescu, I. Mandoiu, S. Prasad, N. Tchervenski, and A. Zelikovsky,Power Efficient Range Assignment in Ad-hoc Wireless Networks, Proc. IEEE WirelessCommunications and Networking Conference, 2003.2. D.M. Blough, M. Leoncini, G. Resta, and P. Santi, On the Symmetric RangeAssignment Problem in Wireless Ad Hoc Networks, Proc. 2nd IFIP InternationalConference on Theoretical Computer Science, Montreal, August 2002.3. T. Calamoneri, and R. Petreschi, An Efficient Orthogonal Grid Drawing Algorithmfor Cubic Graphs, COCOON’95, Lectures Notes in Computer Science 959,Springer-Verlag, pages 31-40, 1995.4. G. Calinescu, I. Mandoiu, and A. Zelikovsky, Symmetric Connectivity with MinimumPower Consumption in Radio Networks, Proc. 2nd IFIP International Conferenceon Theoretical Computer Science, Montreal, August 2002.5. W.T. Chen and N.F. Huang, The Strongly Connecting Problem on MultihopPacket Radio Networks, IEEE Transactions on Communications, vol. 37, no. 3,pp. 293-295, Oct. 1989.6. A. Clementi, P. Crescenzi, P. Penna, G. Rossi and P. Vocca, On the Complexityof Computing Minimum Energy Consumption Broadcast Subgraphs, 18th AnnualSymposium on Theoretical Aspects of Computer Science, LNCS 2010, 2001, pages121-131.7. A. Clementi, P. Penna and R. Silvestri, Hardness Results for The Power RangeAssignment Problem in Packet Radio Networks, Proc. 3rd International WorkshopRandomization, Approximation and Combinatorial Optimization, Lecture Notes inComputer Science 1671, pp. 197-208, 1999.8. A. Clementi, P. Penna and R. Silvestri, The Power Range Assignment Problemin Radio Networks on the Plane, Proc. 17th Annual Symposium on TheoreticalAspects of Computer Science, Lecture Notes in Computer Science 1770, pp. 651-660, 2000.
246 G. Calinescu and P.-J. Wan9. A. Clementi, G. Huiban, P. Penna, G. Rossi and Y.C. Verhoeven, Some Recent TheoreticalAdvances and Open Questions on Energy Consumption in Ad-Hoc WirelessNetworks, 3rd Workshop on Approximation and Randomization Algorithms inCommunication Networks, 2002.10. R. Diestel, Graph Theory, 2nd Edition, Graduate Texts in Mathematics, Volume173, Springer-Verlag, New York, February 2000.11. J. Edmonds, Edge-disjoint branchings, in Combinatorial Algorithms, R. Rustin,Ed., pp. 91-96. Algorithmics Press, New York, 1972.12. J. Edmonds, Matroid intersection, Annals of Discrete Mathematics, No. 4, pp.185-204, 1979.13. A. Frank and É. Tardos, An application of submodular flows, Linear Algebra andits Applications, vol. 114/115, pp. 329-348, 1989.14. H. N. Gabow, A matroid approach to finding edge connectivity and packing arborescences,Proc. 23rd ACM Symposium on Theory of Computing, pp. 112-122,May 1991.15. H.N. Gabow, A representation for crossing set families with applications to submodularflow problems, in Proc. 4th ACM-SIAM Symposium on Discrete Algorithms,pp. 202-211, Austin, TX, 1993.16. M.R. Garey, D.S. Johnson and R.E. Tarjan, The Planar Hamiltonian Circuit Problemis NP-complete, SIAM J. Comput., vol. 5, pp. 704-714, 1976.17. S. Khuller and B. Raghavachari, Improved approximation algorithms for uniformconnectivity problems, Journal of Algorithms 21, pp. 433-450, 1996.18. S. Khuller and U. Vishkin, Biconnectivity approximations and graph carvings,Journal of ACM, vol. 41, no. 2, pp. 214-235, 1994.19. L. M. Kirousis, E. Kranakis, D. Krizanc and A. Pelc, Power Consumption in PacketRadio Networks, Theoretical Computer Science, vol. 243, no. 1-2, pp. 289-305, 2000.A preliminary version of this papers also appeared in Proc. 14th Annual Symposiumon Theoretical Aspects of Computer Science, LNCS 1200, pp. 363 - 374, 1997.20. E. L. Lawler, Matroid intersection algorithms, Mathematical Programming 9, pp.31-56, 1975.21. E. Lloyd, R. Liu, M. Marathe, R. Ramanathan, and S.S. Ravi, Algorithmic Aspectsof Topology Control Problems for Ad hoc Networks, Proc. 3rd ACM InternationalSymposium on Mobile Ad Hoc Networking and Computing (MobiHoc), Lausanne,Switzerland, June 2002.22. T.S. Rappaport, Wireless Communications: Principles and Practices, PrenticeHall, 1996.23. R. Ramanathan and R. Rosales-Hain, Topology Control of Multihop Wireless NetworksUsing Transmit Power Adjustment, IEEE INFOCOM 2000.24. J.H. van Lint, R.M. Wilson, A course in combinatorics, Cambridge UniversityPress, 1992.25. P-J. Wan, G. Calinescu, X-Y. Li, and O. Frieder, Minimum Energy BroadcastRouting in Static Ad Hoc Wireless Networks, IEEE INFOCOM 2001.26. R.W. Whitty, Vertex-disjoint paths and edge-disjoint branchings in directedgraphs, J. Graph Theory, 11(3):349-358, 1987.27. J.E. Wieselthier, G.D. Nguyen, and A. Ephremides, On the Construction ofEnergy-Efficient Broadcast and Multicast Trees in Wireless Networks. IEEE IN-FOCOM 2000.
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Lecture Notes in Computer Science 2
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Samuel Pierre Michel BarbeauEvangel
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PrefaceAd Hoc Networks are wireless
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Program CommitteeG. Alonso, ETHZ, S
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XTable of ContentsResisting Malicio
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2 H. Dubois-Ferrière, M. Grossglau
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10 H. Dubois-Ferrière, M. Grossgla
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SAFAR: An Adaptive Bandwidth-Effici
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14 J. Doshi and P. Kilambiour proto
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16 J. Doshi and P. Kilambipacket th
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18 J. Doshi and P. Kilambibandwidth
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20 J. Doshi and P. Kilambi5 Simulat
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22 J. Doshi and P. Kilambiquery its
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24 J. Doshi and P. Kilambi4. David
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26 P. Narayan and V.R. SyrotiukThe
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28 P. Narayan and V.R. Syrotiuk2.2
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30 P. Narayan and V.R. Syrotiukrand
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32 P. Narayan and V.R. Syrotiukenti
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34 P. Narayan and V.R. SyrotiukDSRA
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36 P. Narayan and V.R. Syrotiuk7. A
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38 L. Qin and T. Kunzthese two prot
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40 L. Qin and T. Kunzsidered broken
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42 L. Qin and T. KunzP = Prdlog( )
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46 L. Qin and T. KunzFig. 5. Averag
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48 L. Qin and T. Kunz6. J. Broch et
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50 M. Diha and S. Pierrethe propose
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52 M. Diha and S. Pierre3. All proc
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54 M. Diha and S. Pierre3.3 Perform
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56 M. Diha and S. PierreCmip/Cprop0
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58 M. Diha and S. PierreThe tunneli
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Proactive QoS Routing in Ad Hoc Net
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62 Y. Ge, T. Kunz, and L. LamontFig
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64 Y. Ge, T. Kunz, and L. Lamontits
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66 Y. Ge, T. Kunz, and L. Lamonttha
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68 Y. Ge, T. Kunz, and L. Lamontwhi
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70 Y. Ge, T. Kunz, and L. Lamontver
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Delivering Messagesin Disconnected
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74 R. Shah and N.C. Hutchinson3.1 T
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76 R. Shah and N.C. Hutchinsonset c
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78 R. Shah and N.C. HutchinsonTable
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80 R. Shah and N.C. HutchinsonOracl
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82 R. Shah and N.C. Hutchinsonthe r
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Extending Seamless IP Multicast Edg
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86 P.M. Ruiz et al.Section 4 presen
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88 P.M. Ruiz et al.Access NetworkCo
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90 P.M. Ruiz et al.Access NetworkR
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92 P.M. Ruiz et al.MIGAccess Networ
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94 P.M. Ruiz et al.10.90.81-hop-750
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A Uniform Continuum Model for Scali
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98 E.W. Grundke and A.N. Zincir-Hey
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100 E.W. Grundke and A.N. Zincir-He
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102 E.W. Grundke and A.N. Zincir-He
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Probabilistic Protocols for Node Di
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106 G. Alonso et al.A node discover
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108 G. Alonso et al.frequency alloc
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110 G. Alonso et al.- D is a diagon
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112 G. Alonso et al.and therefore,
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114 G. Alonso et al.complicated. Fo
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Towards Adaptive WLAN Frequency Man
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118 F. Gamba, J.-F. Wagen, and D. R
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Analyzing Split Channel Medium Acce
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Preventing Replay Attacks for Secur
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142 J. Zhen and S. SrinivasTraffic
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146 J. Zhen and S. Srinivasbeginnin
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152 M. Just, E. Kranakis, and T. Wa
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A New Framework for Building Secure
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166 H.-P. Bischof, A. Kaminsky, and
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176 G. Calinescuof the UDG 2-hops a
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178 G. CalinescuSection 3 describe
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180 G. CalinescuWhen receiving a pa
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182 G. CalinescuRyvxFig. 3. The unn
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184 G. Calinescu< nodeID, pieceID,
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186 G. Calinescu7. Heinz Breu and D
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188 S.O. Krumke et al.desirable in
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190 S.O. Krumke et al.2.2 Bicriteri
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192 S.O. Krumke et al.1. From the g
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Series EditorsGerhard Goos, Karlsru
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Organizing CommitteeConference Co-c
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Table of ContentsSpace-Time Routing
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Author IndexAlonso, G. 104Bachir, A
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