Revisiting LTE LAA: Channel Access, QoS, and Coexistence with WiFi

Authors :: Wszołek, Jacek
Ludyga, Szymon
Anzel, Wojciech
Szott, Szymon
Source :: IEEE Communications Magazine, vol. 59, no. 2, pp. 91-97, February 2021
Publication Year :: 2019
Abstract: Network operators are looking towards LTE License Assisted Access (LAA) as a means of extending capacity by offloading traffic to unlicensed bands. However, operation in these bands requires abiding to certain coexistence rules in terms of channel access. The description of these rules in existing literature is not always in line with the latest standards. Therefore, in this paper, we clarify the operation of LAA, focusing on channel access and methods of providing Quality of Service (QoS) support. In terms of coexistence, we evaluate the impact of LAA under its various QoS settings on Wi-Fi performance in an experimental testbed. Finally, we describe the upcoming research challenges for LTE-based technologies in unlicensed bands considering the latest developments.<br />Comment: 7 pages, 4 figures, 2 tables

Subjects :: Computer Science - Networking and Internet Architecture
91A06, 91A10, 91A80
C.2.0
C.2.5

Database :: arXiv
Journal :: IEEE Communications Magazine, vol. 59, no. 2, pp. 91-97, February 2021
Publication Type :: Report
Accession number :: edsarx.1910.11002
Document Type :: Working Paper
Full Text :: https://doi.org/10.1109/MCOM.001.2000595