'Optimal Resource Allocation for Uplink Data Collection in Nonorthogonal Multiple Access Networks' was published in which year?
When was 'Optimal Resource Allocation for Uplink Data Collection in Nonorthogonal Multiple Access Networks' published?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/journals/sensors/WuZNQ0Z18> <https://dblp.org/rdf/schema#yearOfPublication> ?answer }
<https://dblp.org/rec/journals/sensors/WuZNQ0Z18>