Joint Resource Configuration and MCS Selection Scheme for Uplink Grant-Free URLLC
Thomas Jacobsen,Renato Abreu,Gilberto Berardinelli,Klaus I. Pedersen,Istvan Z. Kovacs,Preben Mogensen +5 more
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TLDR
A joint resource allocation solution including multiple modulation and coding schemes (MCSs) and power control settings for grant-free uplink transmissions on shared resources for ultra-reliable and low-latency communications.Abstract:
Ultra-reliable and low-latency communications (URLLC) addresses the most challenging set of services for 5G New Radio. Uplink grant-free transmissions is recognized as a promising solution to meet the ambitious URLLC target (1 ms latency at a 99.999% reliability). Achieving such a high reliability comes at the expense of poor spectral efficiency, which ultimately affects the load supported by the system. This paper proposes a joint resource allocation solution including multiple modulation and coding schemes (MCSs) and power control settings for grant-free uplink transmissions on shared resources. The scheme assigns smaller bandwidths parts and higher MCS to the UEs in good average channel conditions, reducing the probability of fully overlapping transmissions. The performance analysis shows that the scheme is capable of increasing the system outage capacity by ∼90%, compared to prior art solutions using a conservative single-MCS configuration with fully overlapping transmissions.read more
Citations
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Journal ArticleDOI
Towards Enabling Critical mMTC: A Review of URLLC Within mMTC
TL;DR: In this paper, the state-of-the-art technologies for separate mMTC and URLLC services are reviewed, and the authors identify key challenges from conflicting SOTA requirements, followed by potential approaches to prospective critical mMTC solutions at different layers.
Posted Content
Towards Enabling Critical mMTC: A Review of URLLC within mMTC
TL;DR: This paper first reviews the state-of-the-art (SOTA) technologies for separate mMTC and URLLC services and then identifies key challenges from conflicting SOTA requirements, followed by potential approaches to prospective critical mMTC solutions at different layers.
Journal ArticleDOI
Multi-cell Reception for Uplink Grant-Free Ultra-Reliable Low-Latency Communications
Thomas Jacobsen,Renato Abreu,Gilberto Berardinelli,Klaus I. Pedersen,Istvan Z. Kovacs,Preben Mogensen +5 more
TL;DR: It is observed that multi-cell reception can provide URLLC capacity gains from 205% to 440% when the BSs are equipped with two receive antennas and 53% to 22% when BSs is equipped with four receive antennas, depending on whether the retransmissions are enabled.
Proceedings Article
System Level Analysis of K-Repetition for Uplink Grant-Free URLLC in 5G NR
Thomas Jacobsen,Renato Abreu,Gilberto Berardinelli,Klaus I. Pedersen,Istvan Z. Kovacs,Preben Mogensen +5 more
TL;DR: It is suggested that repetitions based schemes can, with a careful selection of the sub-band size and uplink power control parameters, achieve comparable URLLC performance with retransmission based schemes when the effect of queuing is disregarded.
Journal ArticleDOI
Online Radio Pattern Optimization Based on Dual Reinforcement-Learning Approach for 5G URLLC Networks
TL;DR: A dual reinforcement machine learning (RML) approach is developed for online pattern optimization in 5G new radio TDD deployments, where a considerable URLLC outage latency improvement is demonstrated with the proposed scheme, compared to the state-of-the-art dynamic-TDD proposals.
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