Simulation and Evaluation of Unsynchronized Power Saving Mechanisms in Wireless Ad Hoc Networks
Power saving mechanisms in wireless ad hoc network nodes mainly switch off the transmission and reception hardware for a maximal amount of time and turn it on again within a given interval. Many approaches aim to synchronize the state changes of the nodes in the network through distributed beacon generation and introduce mechanisms where nodes synchronously wake up at designated points of time to exchange announcements about pending traffic. Synchronization however is difficult to achieve, in particular in ad hoc networks.
This paper describes the simulation, evaluation and refinement of a recently proposed power saving approach based on asynchronous wake-up patterns and wake-up announcements integrated with AODV. We show that significant improvements of the connectivity under low wake ratios can be achieved by carefully designed forwarding strategies of AODV route request messages.
Unable to display preview. Download preview PDF.
- 1.Braun, T., Feeney, L.M.: Power Saving in Wireless Ad hoc Networks without Synchronization. In: 5th Scandinavian Workshop on Wireless Ad-hoc Networks, Stockholm (2005)Google Scholar
- 2.ANSI/IEEE Std 802.11 (ISO/IEC 8802-11), 1999 Edition (R2003)Google Scholar
- 3.Tseng, Y.C., Hsu, C.S., Hsieh, T.Y.: Power Saving Protocols for IEEE 802.11-based Multihop Ad hoc Networks. In: Proceedings of IEEE INFOCOM, New York (June 2003)Google Scholar
- 4.Feeney, L.M.: A QoS aware Power Save Protocol For Wireless Ad Hoc Networks. In: Proceedings of the First Mediterranean Workshop on Ad Hoc Networks (Med-Hoc Net 2002), Sardenga, Italy (September 2002)Google Scholar
- 5.Feeney, L.M., Nilsson, M.: Investigating the Energy Consumption of a Wireless Network Interface in an Ad Hoc Networking Environment. IEEE INFOCOM (2001)Google Scholar
- 6.Ebert, J.-P., Burns, B., Wolisz, A.: A trace-based approach for determining the energy consumption of a WLAN network interface. In: Proceedings of European Wireless, Florence, Italy (February 2002)Google Scholar
- 7.Perkins, C.E., Belding-Royer, E.M.: Ad hoc On-Demand Distance Vector (AODV) Routing, IETF Internet draft RFC 3561 (October 2003)Google Scholar
- 8.OMNeT++ Network Simulation Framework, http://www.omnetpp.org
- 9.Varga, A.: The OMNeT++ Discrete Event Simulation System. In: Proceedings of the European Simulation Multiconference (ESM 2001), Prague, Czech Republic (June 2001)Google Scholar
- 10.Mobility Framework for OMNeT++, http://mobility-fw.sourceforge.net
- 11.Osipov, E., Tschudin, C.: Improving the Path Optimality of Reactive Ad Hoc Routing Protocols Through De-Coherent RREQ waves, Technical Report CS-2004-002, University of Basel, SwitzerlandGoogle Scholar
- 12.Rech, J.: Wireless LANs. Heise Verlag (2004)Google Scholar
- 13.Schiller, J.: Mobile Communications. Addison-Wesley, Reading (2003)Google Scholar
- 14.Dousse, O., Thiran, P., Hasler, M.: Connectivity in Ad-hoc and Hybrid Networks. In: Proceedings of the 21st Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM 2002), New York (June 2002)Google Scholar
- 15.Enz, C.C., El-Hoiydi, A., Decotignie, J.-D., Melly, T., Peiris, V.: WiseNET: An Ultralow-Power Wireless Sensor Network Solution. IEEE Computer Magazine 37(8) (August 2004)Google Scholar