Radio Resource Management in NB-IoT Systems: Empowered by Interference Prediction and Flexible Duplexing

NB-IoT is a promising cellular technology for enabling low cost, low power, long-range connectivity to IoT devices. With the bandwidth requirement of 180 kHz, it provides the flexibility to deploy within the existing LTE band. However, this raises serious concerns about the performance of the techno...

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Bibliographic Details
Published inIEEE network Vol. 34; no. 1; pp. 144 - 151
Main Authors Malik, Hassan, Alam, Muhammad Mahtab, Pervaiz, Haris, Moullec, Yannick Le, Al-Dulaimi, Anwer, Parand, Sven, Reggiani, Luca
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Delays
Downlink
Interference
Internet of Things
Long Term Evolution
Narrowband
Resource allocation
Resource management
Skewed distributions
Uplink
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Summary:NB-IoT is a promising cellular technology for enabling low cost, low power, long-range connectivity to IoT devices. With the bandwidth requirement of 180 kHz, it provides the flexibility to deploy within the existing LTE band. However, this raises serious concerns about the performance of the technology due to severe interference from multi-tier 5G HetNets. Furthermore, as NB-IoT is based on HD-FDD, the symmetric allocation of spectrum band between the downlink and uplink results in underutilization of resources, particularly in the case of asymmetric traffic distribution. Therefore, an innovative RRM strategy needs to be devised to improve spectrum efficiency and device connectivity. This article presents the detailed design challenges that need to be addressed for the RRM of NB-IoT and proposes a novel framework to devise an efficient resource allocation scheme by exploiting cooperative interference prediction and flexible duplexing techniques.
ISSN:0890-8044
1558-156X
DOI:10.1109/MNET.001.1900087