Quality of service based routing: a performance perspective
Proceedings of the ACM SIGCOMM '98 conference on Applications, technologies, architectures, and protocols for computer communication
Power-aware routing in mobile ad hoc networks
MobiCom '98 Proceedings of the 4th annual ACM/IEEE international conference on Mobile computing and networking
QoS routing in networks with inaccurate information: theory and algorithms
IEEE/ACM Transactions on Networking (TON)
Evaluating the impact of stale link state on quality-of-service routing
IEEE/ACM Transactions on Networking (TON)
OLSR Performance Measurement in a Military Mobile Ad-hoc Network
ICDCSW '04 Proceedings of the 24th International Conference on Distributed Computing Systems Workshops - W7: EC (ICDCSW'04) - Volume 7
New energy saving mechanisms for mobile ad-hoc networks using OLSR
PE-WASUN '05 Proceedings of the 2nd ACM international workshop on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks
Information Collection Services for QoS-Aware Mobile Applications
IEEE Transactions on Mobile Computing
Extending network knowledge: making OLSR a quality of service conducive protocol
Proceedings of the 2006 international conference on Wireless communications and mobile computing
Energy Aware Proactive MANET Routing with Prediction on Energy Consumption
WASA '07 Proceedings of the International Conference on Wireless Algorithms,Systems and Applications
Load-Balanced Routing in Wireless Networks: State Information Accuracy Using OLSR
WIMOB '07 Proceedings of the Third IEEE International Conference on Wireless and Mobile Computing, Networking and Communications
Maximum battery life routing to support ubiquitous mobile computing in wireless ad hoc networks
IEEE Communications Magazine
Towards proactive event-driven computing
Proceedings of the 5th ACM international conference on Distributed event-based system
Proceedings of the 7th ACM international conference on Distributed event-based systems
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To support energy-efficient routing, accurate state information about energy levels should be available. But due to bandwidth constraints, communication costs, high loss rate and the dynamic topology of MANETs, collecting and maintaining up-to-date state information is a very complex task. In this work, we use Optimized Link State Routing (OLSR) as the underlying routing protocol and explore the accuracy of state information under different traffic rates. We are focusing on energy level as QoS metric, which has been used for routing decisions in many energy-efficient routing protocol proposals. First, we show that the accuracy of the available nodal energy level does impact the performance of energy-efficient variations of OLSR. If nodes learn other nodes' energy level through protocol messages, fewer packets tend to get delivered in an energy-constrained network, in particular under high traffic loads or in mobile networks. We analyzed the accuracy of the reported energy levels for the static scenarios and found that the propagated values are highly inaccurate, in particular under high traffic rates. Tuning the OLSR protocol parameters has no noticeable impact on accuracy levels. We then propose two additional techniques to increase accuracies and compare the different techniques against each other and against the basic OLSR protocol. One of the techniques, which we call smart prediction, achieves highly accurate perceived energy levels under all traffic loads. We finally show that the proposed smart prediction technique also works well for mobile networks and more heterogeneous wireless interfaces.