HARQ in relay-assisted transmission for machine type communications

Ijaz, A., Zhang, L., Quddus, A. u. and Tafazolli, R. (2016) HARQ in relay-assisted transmission for machine type communications. IEEE Wireless Communications Letters, 5(2), pp. 172-175. (doi:10.1109/LWC.2016.2514423)

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Abstract

This letter describes the impact of unknown channel access delay on the timeline of the hybrid automatic repeat request (HARQ) process in the 3rd generation partnership project long term evolution (3GPP LTE) system when a relay node (RN) is used for coverage extension of machine type communication (MTC) devices. A solution is also proposed for the determination of unknown channel access delay when the RN operates in the unlicensed spectrum band. The proposed mechanism is expected to help MTC operation in typical coverage holes areas such as smart meters located in the basement of buildings.

Item Type:Articles
Additional Information:This work was supported in part by the University of Surrey 5GIC Program and in part by the Sony Europe Limited.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Zhang, Dr Lei
Authors: Ijaz, A., Zhang, L., Quddus, A. u., and Tafazolli, R.
College/School:College of Science and Engineering > School of Engineering
Journal Name:IEEE Wireless Communications Letters
Publisher:IEEE
ISSN:2162-2337
ISSN (Online):2162-2345
Published Online:04 January 2016
Copyright Holders:Copyright © 2016 IEEE
First Published:First published in IEEE Wireless Communications Letters 5(2): 172-175
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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