Non-Orthogonal Multiple Access and Network Slicing: Scalable Coexistence of eMBB and URLLC

Tominaga, Eduardo Noboro; Alves, Hirley; Souza, Richard Demo; Rebelatto, João Luiz

doi:10.48550/arxiv.2101.04605

Cited by 1 publication

(2 citation statements)

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“…In [12], the authors introduce a communication-theoretic framework for the coexistence of the three 5G services in the uplink of the same RAN, but being limited to single antenna devices and BS. Finally, [13], [14] compare orthogonal and non-orthogonal resource allocation strategies for coexistence scenarios between eMBB and critical MTC, and between eMBB and MTC, respectively. It can be noted that, in general, the aforementioned works have not dealt with the issue of MTC activity detection in the presence of interference from other services, which is a problem worth addressing.…”

Section: A Related Literaturementioning

confidence: 99%

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Joint Channel Estimation and Device Activity Detection in Heterogeneous Networks

Marata¹,

López²,

Tominaga³

et al. 2021

2021 29th European Signal Processing Conference (EUSIPCO)

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Internet of Things (IoT) has triggered a rapid increase in the number of connected devices and new use cases of wireless communications. To meet the new demands, the fifth generation (5G) of wireless communication systems features native machine type communication (MTC) services in addition to traditional human type communication (HTC) services. Some of the main challenges are the heterogeneous requirements and the sporadic traffic of massive MTC (mMTC), which makes the orthogonal allocation of resources infeasible. To overcome this problem, grant free non-orthogonal multiple access schemes have been proposed alongside with sparse signal recovery algorithms. While most of the related works have considered only homogeneous networks, we focus on a scenario where an enhanced mobile broadband (eMBB) device and multiple MTC devices share the same radio resources. We exploit the approximate message passing (AMP) algorithm for joint device activity detection and channel estimation of MTC devices in the presence of interference from eMBB, and evaluate the system performance in terms of receiver operating characteristics (ROC) and channel estimation errors. Moreover, we also propose two new pilot sequence generation strategies which improve the detection capabilities of the MTC receiver without affecting the eMBB service.

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Section: A Related Literaturementioning

confidence: 99%

“…In[13], the authors showed that the non-orthogonal resource allocation for eMBB and mMTC outperforms the orthogonal counterpart as the number of antennas at the BS increases.…”

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confidence: 99%