Resource-Efficient Dual Connectivity for Ultra-Reliable Low-Latency Communication

Marco Centenaro, Daniela Laselva, Jens Steiner, Klaus Ingemann Pedersen, Preben E. Mogensen

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Abstrakt

Dual connectivity for reliability is considered one of the most important enablers of ultra-reliable low-latency communication in fifth-generation cellular systems. In this paper, we focus on downlink dual connectivity, proposing two methods that prevent unnecessary duplicates transmissions to enhance spectral efficiency when using data duplication. In the first method, the duplicates of packets already successfully delivered to the terminal are promptly dropped from the transmission queues of the involved base stations thanks to an uplink indication provided by terminal itself. In the second method, the transmission of duplicates from the secondary node is enforced only upon a failure of the master node. The performance of the two proposed schemes is evaluated in terms of i) achievable packet reliability within the 1-ms latency target of ultra-reliable low-latency communication, and ii) resource-block utilization via system-level simulation campaigns. The results show that, in the investigated scenario, the second proposal can support a four-times higher offered load with respect to the baseline approach.

OriginalsprogEngelsk
Titel2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)
Antal sider5
ForlagIEEE
Publikationsdato30 jun. 2020
Artikelnummer9128536
ISBN (Trykt)978-1-7281-4053-7
ISBN (Elektronisk)978-1-7281-5207-3
DOI
StatusUdgivet - 30 jun. 2020
Begivenhed2020 IEEE 91st Vehicular Technology Conference - Antwerpen, Belgien
Varighed: 25 maj 202028 maj 2020

Konference

Konference2020 IEEE 91st Vehicular Technology Conference
LandBelgien
ByAntwerpen
Periode25/05/202028/05/2020
NavnIEEE Vehicular Technology Conference. Proceedings
ISSN1090-3038

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