Results 31 to 40 of about 442,961 (254)
Massive access technology in 6G cellular Internet of things network
物联网学报, 2020 To realize Internet of everything (IoE),the 6G cellular Internet of things (IoT) network need to provide wireless access with low power,massive connectivity and wide coverage.Through the analysis and research on the massive access technology in 6G ...
Feiyan TIAN +3 more
doaj +2 more sources
A Hybrid-Grant Random Access Scheme in Massive MIMO Systems for IoT
IEEE Access, 2020 The grant-free random access (RA) can minimize the access delay but also brings severe data transmission interferences. To overcome this defect, we propose a new RA scheme that inserts a base station (BS) broadcasting message after user equipments (UEs ...
Qi Zhang, Shi Jin, Hongbo Zhu
doaj +1 more source
Scheduling Versus Contention for Massive Random Access in Massive MIMO Systems
IEEE Transactions on Communications, 2022 14 pages, 10 figures.
Justin Kang, Wei Yu 0001
openaire +2 more sources
Mitigating the Massive Access Problem in the Internet of Things
, 2022 AbstractThe traffic from the large number of IoT devices connected to the IoT is a source of congestion known as the Massive Access Problem (MAP), that results in packet losses, delays and missed deadlines for real-time data. This paper reviews the literature on MAP and summarizes recent results on two approaches that have been designed to mitigate MAP.
Erol Gelenbe +3 more
openaire +4 more sources
Random access scheme for different MTC scenario requirement
Tongxin xuebao, 2020 For the different random access requirements of the mixed scenarios of ultra-reliable low latency (URLLC) and massive machine type communications (mMTC) in MTC,a random access scheme based on devices grouping was proposed.The proposed scheme divided the ...
Zhefu WU +3 more
doaj
IEEE Access, 2018 Machine-to-machine (M2M) communications refer to the autonomous interaction between connected devices without the human intervention. Recently, the Third-Generation Partnership Project (3GPP) introduced the Long-Term Evolution (LTE) and Long-Term ...
Huda Althumali, Mohamed Othman
doaj +1 more source
Help from space: grant-free massive access for satellite-based IoT in the 6G era
Digital Communications and Networks, 2022 The Sixth-Generation (6G) standard for wireless communications is expected to realize ubiquitous coverage for massive Internet of Things (IoT) networks by 2030.
Neng Ye +3 more
doaj +1 more source
Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment
Molecular Oncology, EarlyView.This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley +1 more source
Dynamic Backoff Collision Resolution for Massive M2M Random Access in Cellular IoT Networks
IEEE Access, 2020 The deployment of machine-to-machine (M2M) communications on cellular networks provides ubiquitous services to Internet-of-Things (IoT) systems. Cellular networks have been chosen as the best infrastructure for M2M communications due to the wide coverage
Huda Dakhilallah Althumali +3 more
doaj +1 more source
Molecular Oncology, EarlyView.Matched spatial transcriptomics and single‐nuclei RNA‐seq were generated for anaplastic and BRAFV600E papillary thyroid cancers revealing generic and tumor‐specific states occurring in cancer cells and in the tumor microenvironment. In this context, cancer dedifferentiation mirrored organoid maturation through ordered thyroid marker gain/loss ...
Adrien Tourneur +11 more
wiley +1 more source