QoS and Energy Trade Off in Distributed Energy-Limited Mesh/Relay Networks: A Queuing Analysis
IEEE Transactions on Parallel and Distributed Systems
Grid resource management policies for load-balancing and energy-saving by vacation queuing theory
Computers and Electrical Engineering
Efficient power management for infrastructure IEEE 802.11 WLANs
IEEE Transactions on Wireless Communications
Towards implementing a fully wireless multiple-lead electrocardiograph
Proceedings of the Fifth International Conference on Body Area Networks
Optimally Adaptive Power-Saving Protocols for Ad Hoc Networks Using the Hyper Quorum System
IEEE/ACM Transactions on Networking (TON)
| Hi-index | 0.01 |
It has long been recognized that energy conservation usually comes at the cost of degraded performance such as longer delay and lower throughput in stand-alone systems and communication networks. However, there have been very few research efforts in quantifying such trade-offs. In this paper, we develop analytical models to characterize the relationships among energy, delay and throughput for different power management policies in wireless communication. Based on the decision when to put nodes to low-power states, we divide power management policies into two categories, i.e., 1) time-out driven and 2) polling-based. M/G/1/K queues with multiple vacations and an attention span are used to model time-out driven policies while transient analysis is applied to derive the state transition probability in polling-based systems. We find that For time-out driven power management policies, the "optimal" policy exhibits a threshold structure, i.e., when the traffic load is below certain threshold, a node should switch to the low-power state whenever possible and always remain active otherwise. From our analysis, contrary to general beliefs, polling-based policies such as the IEEE 802.11 PSM are not energy efficient for light traffic load