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Topology Control with better Radio Models Implications for Energy and Multi-Hop Interference

This paper explores topology control (TC) techniques aimed at optimizing energy consumption and reducing interference in multi-hop ad hoc networks. We present a model, ATASP, which facilitates an optimal communication graph and its relation to energy-efficient routing. Through simulations involving 10 to 500 nodes in varying radio channel conditions, we assess the performance of TC strategies based on energy minimization and interference reduction. Results highlight the significance of effective topology management for enhancing network throughput and reducing delays, pointing towards open questions in topology control.

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Topology Control with better Radio Models Implications for Energy and Multi-Hop Interference

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  1. Giovanni Resta Douglas M. Blough Mauro Leoncini Paolo Santi Topology Control with better Radio Models Implications for Energy and Multi-Hop Interference ACM MSWiM ‘05

  2. Outline • Introduction • TC for Energy • TC for Interference • ATASP Topology • Simulation • Conclusion

  3. Introduction • Topology Control • Energy-efficient • Low-interference Multi-Hop Ad Hoc Networks

  4. TC for Energy tmin + r tmin + r tmax + r Cisco Aironet 4800 card, r = 0.958tmin and tmax = 1.358tmin The minimum-energy path between two nodes always corresponded to a minimum-hop path.

  5. TC for Interference 1. Purely Geometric 2. Multi-hop communications

  6. TC for Interference

  7. TC for Interference

  8. TC for Interference

  9. Example 5 3 3 3 4 3 5 3 3 4 3 5

  10. ATASP Topology • All-To-All-Shortest-Path • ATASP has optimal PIC spanning factor • ρ(ATASP) = 1 • ATASP is connected iff G is connected • The communication graph G is composed ofΘ(n2) edges, and its ATASP subgraph is composed ofΘ(n2) edges as well

  11. ATASP Topology 0 1 2 3 6 4 5

  12. Simulation • 10~500 nodes • Distributed uniformly at random in the unit square • Two radio channel models: the quiteidealistic free space propagation model, and the log-normal shadowing model.

  13. Free Space Propagation

  14. Log-normal shadowing

  15. Free Space Propagation- different localized topologies

  16. Log-normal shadowing -different localized topologies

  17. Conclusion • In this paper given some model for topology control • Energy • Multi-hop Interference • Open question about the topology control • Interference • Energy • Delay • Throughput

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