Contention window adaptation of listen-before-talk scheme for LTE and Wi-Fi coexistence in unlicensed spectrum

With both small-cell LTE and 802.11 networks now available as alternatives for deployment in unlicensed bands at 5 GHz, investigation into their coexistence is a topic of great interest. 3GPP Rel. 14 has standardized LTE licensed assisted access (LAA) that seeks to make LTE more coexistence friendly with Wi-Fi by incorporating listen before talk (LBT). However, the fairness of Wi-Fi and LTE-LAA sharing is a topic that has not been adequately explored. In this work, we first investigate the 3GPP definition of fair coexistence in [1] via new analytical models. By tuning the LTE-LAA parameters, we exemplify scenarios when the 3GPP notion of fairness is achieved and conversely, when not achieved. The formal notions of access and proportional fairness is then considered for these scenarios to compare and contrast with the 3GPP definition.

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Contention window adaptation of listen-before-talk scheme for LTE and Wi-Fi coexistence in unlicensed spectrum

Cited by 2 publications

References 7 publications

Resolving 5G NR-U Contention for Gap-Based Channel Access in Shared Sub-7 GHz Bands

Resolving 5G NR-U Contention for Gap-Based Channel Access in Shared Sub-7 GHz Bands

On the Fairness of Wi-Fi and LTE-LAA Coexistence

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