Next Article in Journal
Design and Construction of a Bilateral Haptic System for the Remote Assessment of the Stiffness and Range of Motion of the Hand
Next Article in Special Issue
PILA: Sub-Meter Localization Using CSI from Commodity Wi-Fi Devices
Previous Article in Journal
Assessing Walking Strategies Using Insole Pressure Sensors for Stroke Survivors
Previous Article in Special Issue
QUEST: Eliminating Online Supervised Learning for Efficient Classification Algorithms
Open AccessArticle

A Power-Optimized Cooperative MAC Protocol for Lifetime Extension in Wireless Sensor Networks

by 1,2,3,*, 1,2,3, 1,2,3, 1,2,3 and 1,2,3,*
1
School of Electronics and Information Engineering, Beihang University, Beijing 100191, China
2
Beijing Key Laboratory for Network-Based Cooperative Air Traffic Management, Beijing 100191, China
3
Collaborative Innovation Center of Geospatial Technology, Wuhan 430079, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Yu Wang
Sensors 2016, 16(10), 1630; https://doi.org/10.3390/s16101630
Received: 1 August 2016 / Revised: 17 September 2016 / Accepted: 26 September 2016 / Published: 1 October 2016
In wireless sensor networks, in order to satisfy the requirement of long working time of energy-limited nodes, we need to design an energy-efficient and lifetime-extended medium access control (MAC) protocol. In this paper, a node cooperation mechanism that one or multiple nodes with higher channel gain and sufficient residual energy help a sender relay its data packets to its recipient is employed to achieve this objective. We first propose a transmission power optimization algorithm to prolong network lifetime by optimizing the transmission powers of the sender and its cooperative nodes to maximize their minimum residual energy after their data packet transmissions. Based on it, we propose a corresponding power-optimized cooperative MAC protocol. A cooperative node contention mechanism is designed to ensure that the sender can effectively select a group of cooperative nodes with the lowest energy consumption and the best channel quality for cooperative transmissions, thus further improving the energy efficiency. Simulation results show that compared to typical MAC protocol with direct transmissions and energy-efficient cooperative MAC protocol, the proposed cooperative MAC protocol can efficiently improve the energy efficiency and extend the network lifetime. View Full-Text
Keywords: wireless sensor networks; medium access control (MAC); cooperative MAC protocol; transmission power optimization; cooperative node selection; network lifetime; energy efficiency wireless sensor networks; medium access control (MAC); cooperative MAC protocol; transmission power optimization; cooperative node selection; network lifetime; energy efficiency
Show Figures

Figure 1

MDPI and ACS Style

Liu, K.; Wu, S.; Huang, B.; Liu, F.; Xu, Z. A Power-Optimized Cooperative MAC Protocol for Lifetime Extension in Wireless Sensor Networks. Sensors 2016, 16, 1630.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop