Massive Unsourced Random Access for NGMA: Architectures, Opportunities, and Challenges

Che, Jingze; Zhang, Zhaoyang; Yang, Zhaohui; Chen, Xiaoming; Zhong, Caijun

doi:10.1109/mnet.004.2200462

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…Based on the above-mentioned analysis, a multi-path MAC scheduling scheme with low complexity, named M-Scheduler, is proposed in this paper. Under the M-Scheduler policy, a tuple-based mathematical model is employed and the random-access technique [ 25 ] is used to complete distributed scheduling. Furthermore, a data traffic allocation mechanism is developed.…”

Section: Introductionmentioning

confidence: 99%

A Multi-Path MAC Scheduling Scheme for Multi-Channel Wireless Sensor Networks

Zhang

Yang

2023

Entropy

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Designing reasonable MAC scheduling strategies is an important means to ensure transmission quality in wireless sensor networks (WSNs). When there exist multiple available routes from the source to the destination, it is necessary to combine a data traffic allocation mechanism and design a multi-path MAC scheduling scheme in order to ensure QoS. This paper develops a multi-path resource allocation method for multi-channel wireless sensor networks, which uses random-access technology to complete MAC scheduling and selects the transmission path for each packet according to the probability. Through theoretical analysis and simulation experiments, it can be found that the proposed strategy can provide a reliable throughput capacity region. Meanwhile, due to the use of random-access technology, the computational complexity of the proposed algorithm can be independent of the number of links and channels.

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Section: Introductionmentioning

confidence: 99%

A Multi-Path MAC Scheduling Scheme for Multi-Channel Wireless Sensor Networks

Zhang

Yang

2023

Entropy

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“…Unsourced random access is a promising multiple access technology for 6G DOI: 10.4236/jcc.2023.119007 122 Journal of Computer and Communications [4]. In [5], uncoordinated and unsourced multiple access communication is proposed as a novel formulation for current uplink data transfers, which is closely related to coded random access and many access channel [6].…”

Section: Introductionmentioning

confidence: 99%

Joint Multi-User Detection with Weighting Factors for Unsourced Multiple Access

Liu,

Niu,

2023

JCC

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Multi-user detection techniques are currently being studied as highly promising technologies for improving the performance of unsourced multiple access systems. In this paper, we propose joint multi-user detection schemes with weighting factors for unsourced multiple access. First, we introduce bidirectional weighting factors in the extrinsic information passing process between the multi-user detector based on belief propagation (BP) and the LDPC decoder. Second, we incorporate bidirectional weighting factors in the message passing process between the MAC nodes and the user variable nodes in BPbased multi-user detector. The proposed schemes select the optimal weighting factors through simulations. The simulation results demonstrate that the proposed schemes exhibit significant performance improvements in terms of block error rate (BLER) compared to traditional schemes.

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