Energy-conserving access protocols for identification networks
IEEE/ACM Transactions on Networking (TON)
Geography-informed energy conservation for Ad Hoc routing
Proceedings of the 7th annual international conference on Mobile computing and networking
Wake on wireless: an event driven energy saving strategy for battery operated devices
Proceedings of the 8th annual international conference on Mobile computing and networking
Dynamic Power Management in Wireless Sensor Networks
IEEE Design & Test
Adaptive Power Control and Selective Radio Activation for Low-Power Infrastructure-Mode 802.11 LANs
ICDCSW '03 Proceedings of the 23rd International Conference on Distributed Computing Systems
Medium access control with coordinated adaptive sleeping for wireless sensor networks
IEEE/ACM Transactions on Networking (TON)
Packet scheduler for mobile Internet services using high speed downlink packet access
IEEE Transactions on Wireless Communications
Performance of Adaptive Sleep Period Control for Wireless Communications Systems
IEEE Transactions on Wireless Communications
Principles and protocols for power control in wireless ad hoc networks
IEEE Journal on Selected Areas in Communications
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In wireless and mobile communications systems, battery power is an essential and limited resource of portable devices. Sleep mode operation is widely used to save battery power. However, by using the sleep mode, the delay in packet transmission increases. In this paper, we propose an adaptive scheme, called the p-persistent sleep decision (SD), which controls the tradeoff between the power saving and the delay performance. The proposed p-persistent SD scheme can be used for the systems adopting frame structure with fixed length. At each beginning of frame, a node decides its state (i.e., sleep or active) for the frame, according to the result of p-persistent test, considering a variety of sleep-decision parameters, for examples, the number of queued packets and the channel condition. The performance of the p-persistent SD is evaluated by using Markov analysis. Numerical results show that we can easily control the tradeoff between the power saving and the delay performance by assigning different weights to the sleep-decision parameters. As an application example, we suggest the p-persistent SD applied to IEEE 802.11 MAC and compare its performance with that of the conventional IEEE 802.11 power save mode by using simulation. The simulation results show that the proposed scheme saves more energy under the given delay constraint. Since the proposed scheme is simple and practical, it can be applied to any star- and mesh-topology wireless networks with fixed frame length.