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Sensors 2017, 17(3), 463; doi:10.3390/s17030463

Hybrid ARQ Scheme with Autonomous Retransmission for Multicasting in Wireless Sensor Networks

School of Electronics and Information Engineering, Korea Aerospace University, 200-1 Hwajeon-Dong, Goyang-si, Gyunggi-do 10540, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Mohamed F. Younis
Received: 5 January 2017 / Revised: 22 February 2017 / Accepted: 22 February 2017 / Published: 25 February 2017
(This article belongs to the Section Sensor Networks)
View Full-Text   |   Download PDF [2092 KB, uploaded 25 February 2017]   |  

Abstract

A new hybrid automatic repeat request (HARQ) scheme for multicast service for wireless sensor networks is proposed in this study. In the proposed algorithm, the HARQ operation is combined with an autonomous retransmission method that ensure a data packet is transmitted irrespective of whether or not the packet is successfully decoded at the receivers. The optimal number of autonomous retransmissions is determined to ensure maximum spectral efficiency, and a practical method that adjusts the number of autonomous retransmissions for realistic conditions is developed. Simulation results show that the proposed method achieves higher spectral efficiency than existing HARQ techniques. View Full-Text
Keywords: hybrid automatic repeat request (HARQ); autonomous retransmission; multicast service; feedback overhead; power saving hybrid automatic repeat request (HARQ); autonomous retransmission; multicast service; feedback overhead; power saving
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Jung, Y.-H.; Choi, J. Hybrid ARQ Scheme with Autonomous Retransmission for Multicasting in Wireless Sensor Networks. Sensors 2017, 17, 463.

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