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Unified access in licensed and unlicensed bands in LTE-A Pro and 5G

  • Boon Loong Ng (a1), Hongbo Si (a1), Aris Papasakellariou (a1) and Jianzhong Charlie Zhang (a1)
Abstract

Spectrum scarcity has driven enhancements of Long-Term Evolution (LTE) in utilizing unlicensed bands in conjunction with licensed bands for delivering mobile data, resulting in the introduction of LTE unlicensed technologies such as Rel-13 LTE–Licensed-Assisted Access (LAA), Rel-14 LTE–Enhanced Licensed-Assisted Access (eLAA), and LTE-Unlicensed (LTE-U). The next-generation radio access technology, 5G New Radio(NR), faces greater technical challenge due to the need to support frequency bands covering various spectrum licensing regimes and a wide range of frequencies (up to 100 GHz) with very different signal propagation characteristics. This paper presents an overview of LAA and eLAA technical features and 5G NR design considerations to achieve a unified access in licensed and unlicensed bands.

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Copyright
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Corresponding author
Corresponding author: J.C. Zhang, Email: jianzhong.z@samsung.com
References
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[1]RP-141664: Study on Licensed-Assisted Access Using LTE, 3GPP TSG RAN Meeting #65, September 2014.
[2]RP-151045: New Work Item on Licensed-Assisted Access to Unlicensed Spectrum.
[4]ETSI EN 301 893: Harmonized European Standard, Broadband Radio Access Networks (BRAN); 5 GHz high performance RLAN.
[6]RP-160881: Revision of Work Item on enhanced LAA for LTE, 3GPP TSG RAN Meeting #72, June 2016.
[7] TS 36.211 V14.1.0 (2016–12): E-UTRA Physical channels and modulation (Release 14).
[8] TS 36.212 V14.1.0 (2016–12): E-UTRA Multiplexing and channel coding (Release 14).
[9] TS 36.213 V14.1.0 (2016–12): E-UTRA Physical layer procedures (Release 14).
[10]TR 36.889: Study on Licensed-Assisted Access to Unlicensed Spectrum
[11]RP-161596: Revision of SI: Study on New Radio Access Technology, 3GPP TSG RAN Meeting #73, September 2016.
[12]IEEE 802.11: Wireless LANs standards http://standards.ieee.org/about/get/802/802.11.html
[13]FCC Rulemaking: 3.5 GHz Band/Citizens Broadband Radio Service https://www.fcc.gov/rulemaking/12-354
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APSIPA Transactions on Signal and Information Processing
  • ISSN: 2048-7703
  • EISSN: 2048-7703
  • URL: /core/journals/apsipa-transactions-on-signal-and-information-processing
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