Journal
IEEE-ACM TRANSACTIONS ON NETWORKING
Volume 25, Issue 6, Pages 3267-3281Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNET.2017.2731377
Keywords
Coexistence; spectrum sharing; unlicensed LTE; LTE-U; LAA-LTE; WiFi; CSAT; LBT; LBE; proportional fairness
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Funding
- Science Foundation Ireland [11/PI/1177, 13/RC/207]
- European Commission [H2020-ICT-2014-2, 671563]
- Spanish Ministry of Economy
- FEDER regional development fund through SINERGIA Project [TEC2015-71303-R]
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We study the fair coexistence of scheduled and random access transmitters sharing the same frequency channel. Interest in coexistence is topical due to the need for emerging unlicensed LTE technologies to coexist fairly withWiFi. However, this interest is not confined to LTE/WiFi as coexistence is likely to become increasingly commonplace in IoT networks and beyond 5G. In this paper, we show that mixing scheduled and random access incurs an inherent throughput/delay cost and the cost of heterogeneity. We derive the joint proportional fair rate allocation, which casts useful light on current LTE/WiFi discussions. We present experimental results on inter-technology detection and consider the impact of imperfect carrier sensing.
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