A Complete Solution to LTE-U and Wi-Fi Hidden Terminal Problem

Atif, Touheed Anwar and Baswade, Anand M and Tamma, Bheemarjuna Reddy and Franklin, Antony (2019) A Complete Solution to LTE-U and Wi-Fi Hidden Terminal Problem. IEEE Transactions on Cognitive Communications and Networking. p. 1. ISSN 2372-2045


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With the exponential growth in mobile data traffic, mobile operators are facing the unfortunate limit on the availability of licensed spectrum which has however, led to the popularity of Long Term Evolution (LTE) in unlicensed spectrum (LTE-U). Undeniably, it is expected from LTE-U that it fairly shares the spectrum with Wi-Fi. Along with fair sharing, efficient utilization of the unlicensed spectrum is also equally important, which in some sense requires coordination between the two Radio Access Technologies (RATs) viz., LTE-U and Wi-Fi. In particular, the hidden terminal scenario between LTE-U and Wi-Fi, resulting mainly due to lack of coordination, threatens the spectrum utilization of unlicensed spectrum. Focusing on this hidden terminal problem between LTE-U and Wi-Fi, we highlight the deficiency of existing technologies from the Wi-Fi perspective, both at the user level and at the network level. We then propose a novel coexistence technique (similar to RTS-CTS mechanism in Wi-Fi) that solves the hidden terminal problem between LTE-U and Wi-Fi, and subsequently addresses the spectrum underutilization problem caused by hidden terminal collisions. The proposed mechanism achieves this by using a modified CTS frame of Wi-Fi. We have validated our proposed mechanism using a mathematical framework demonstrating its credibility.

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IITH Creators:
IITH CreatorsORCiD
Tamma, Bheemarjuna ReddyUNSPECIFIED
Franklin, AntonyUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: IEEE 802.11 (Wi-Fi),LTE in Unlicensed (LTE-U),Hidden terminal problem,Self-CTS
Subjects: Computer science
Divisions: Department of Computer Science & Engineering
Depositing User: Team Library
Date Deposited: 08 Jul 2019 04:43
Last Modified: 25 Jul 2019 10:04
URI: http://raiith.iith.ac.in/id/eprint/5641
Publisher URL: http://doi.org/10.1109/TCCN.2019.2923655
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