1	An Evaluation Study of a Fair Energy-Efficient Technique for Mobile Ad Hoc Networks Yasser Gadallah Thomas Kunz June 20, 2006
2	Presentation Outline Protocol Objectives and Overview Performance and Scalability Evaluation Comparison with On-demand Power Management Conclusions
3	Protocol Objectives Complementing the functionality of existing MANET routing protocols from energy-efficiency perspective Introducing fair low impact energy conservation to network operation Achieving robust operation that is independent of the functionality of the routing protocol
4	Protocol Overview “Protocol Independent Energy Saving”, PIES Achieves fair energy conservation by: Putting nodes to sleep for equal time periods. Providing the routing algorithm with energy threshold info to help it make fair energy conscious decisions Fully distributed algorithm – functionality does not depend on a node or a set of nodes Modular nature – easily integrated with existing routing algorithms Deterministic sleep pattern enables nodes to determine mathematically neighbors’ sleep state Configurable in such a way that introduces no additional traffic to the network
5	Performance with increased population
6	Performance with increased traffic
7	Comparison with the On-demand Power Management - Qualitative evaluation
8	Comparison with the On-demand Power Management – Energy performance
9	Comparison with the On-demand Power Management – Effect on Network Lifetime
10	Conclusions Energy is the most scarce resource for the functionality of mobile ad hoc networks PIES is a solution that achieves fair energy conservation and works with MANET routing algorithms of all categories Simulations show that PIES scales well with increased network population and traffic Comparison with on-demand power management showed that PIES has superior energy, network lifetime and data delivery performance