Volume 1, Issue 3, December 2016, Page: 43-46
A Scheme of Downlink HARQ Scheduling in TDD LTE-A
Hai Zhu, Software Development Department, Great Wall Computer Software & Systems INC., Chongqing, P. R. China
Dan Wang, College of Communication Engineering, Chongqing University of Posts and Telecommunications, Chongqing, P. R. China
Peng Sun, College of Communication Engineering, Chongqing University of Posts and Telecommunications, Chongqing, P. R. China
Received: Sep. 1, 2016;       Accepted: Dec. 2, 2016;       Published: Dec. 30, 2016
DOI: 10.11648/j.ijics.20160103.12      View  2614      Downloads  44
Abstract
In order to provide a higher peak data rate, carrier aggregation (CA) is implemented into Long Term Evolution Advanced (LTE-A) systems. However, more and more downlink hybrid automatic repeat request (HARQ) feedback information need to be transmitted. Especially, in time division duplexing (TDD) systems must comply with the updownconfig, the complexity and storage of HARQ scheduling increase largely under CA. In this paper, a HARQ scheduling scheme is proposed which is based on dynamic information tables to generate and schedule the downlink feedback information of acknowledgment/negative acknowledgment (ACK/NACK) in Long Term Evolution Advanced (LTE-A) system. Some storing tables based on component carriers are designed and a dynamic updated scheme is proposed, which reduces the scheduling complexity and memory occupation effectively.
Keywords
Hybrid Automatic Repeat Request (HARQ), Carrier Aggregation (CA), Long Term Evolution Advanced (LTE-A)
To cite this article
Hai Zhu, Dan Wang, Peng Sun, A Scheme of Downlink HARQ Scheduling in TDD LTE-A, International Journal of Information and Communication Sciences. Vol. 1, No. 3, 2016, pp. 43-46. doi: 10.11648/j.ijics.20160103.12
Copyright
Copyright © 2016 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Reference
[1]
Shen, Z. K. et al., Overview of 3GPP LTE-advanced carrier aggregation for 4G wireless communications, IEEE Commun. Mag., 2012, 50, (2) pp. 122-130.
[2]
AntonioMaria C., Paul G., Guillaume V., Serdar S., Overview of ARQ and HARQ in beyond 3G systems, PIMRCW, 2010, pp. 26-30.
[3]
3GPP TS 36.211 v11.6.0, Physical Channels and Modulation [S], 2013-06.
[4]
3GPP TS 36.213 v11.6.0, Physical layer procedures [S], 2012-06.
[5]
Sharp. R1-103716 Combined Component Aggregated HARQ A/N, June 28-July 2, 2010.
[6]
Sharp. R1-104192 Combined Component Aggregated HARQ A/N, June 28-July 2, 2010.
[7]
Sharp. R1-104515 Combined Component Aggregated HARQ A/N for Power-Limited Uses, August 23-27, 2010.
[8]
Yang L., Liu L., Mingju L., Lan C., Uplink Control for Low Latency HARQ in TDD Carrier Aggregation, IEEE 75th Vehicular Technology Conference, 2012, pp. 1-5.
[9]
Wang W. T., Shi Z. P., Zeng Q. Z., An improved combined component aggregated HARQ A/N, 3rd International conference on Communications and Mobile Computing, 2011, pp. 417-419.
[10]
Li Z., Peng C., Peter S., HARQ feedback for Carrier Aggregation in LTE-A TDD, ICC 2011, pp. 1-6.
[11]
Kim, Minseok, An implementation of downlink asynchronous HARQ for LTE TDD system, IEEE Radio and Wireless Symposium, 2012, pp. 271-274.
[12]
Lee W., Simeone O., Kang J. Rangan S. Popovski P., HARQ buffer management: An information-theoretic view, IEEE transactions on communications, 2015, pp. 4539-4550.
[13]
Iwamura, M., Etemad, K., Fong, M.-H., Nory, R., and Love, R., Carrier aggregation framework in 3GPP LTE-Advanced, IEEE Commun. Mag., 48, (8), 2010, pp. 60-67.
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