A survey of hybrid MAC protocols for machine-to-machine communications

Amodu, Oluwatosin Ahmed; Othman, Мohamed

doi:10.1007/s11235-018-0434-4

“…In (26), depending on the type of beamforming technique used, P(γ d ≥ γ th ) is calculated by ( 6) and ( 7) with K s = U gb − 1. This problem is one-dimensional so it can be solved by hill-climbing method or exhaustive search.…”

Section: Appendix Optimal Algorithmmentioning

confidence: 99%

“…There has been a research interest for hybrid access schemes [25], [26], combining grant-based and random access schemes to alleviate the number of collisions in the random access schemes and consequently improve the network throughput. In [27], [28], each device wishing to transmit has to contend for channel access by sending a request message, and only successful ones are allocated time slots while the BS utilizes a distributed queuing algorithms to resolve collisions.…”

mentioning

confidence: 99%

A Reconfigurable Access Scheme for Massive-MIMO MTC Networks

Shoaei

¹

,

Nguyen

²

,

Le‐Ngoc

³

2021

IEEE Access

7

0

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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“…Other solutions include the hybrid random access protocols which combine two different techniques to achieve an efficient performance for RACH. Several hybrid protocols have been investigated and compared based on different combination schemes and performance metrics [8]. This work focuses on a specific hybrid random access method in which a congestion control technique is combined with a collision resolution technique.…”

Section: Related Workmentioning

confidence: 99%

Opportunities of hybrid random access protocols for M2M communications in LTE/LTE-A networks

Althumali

¹

,

Othman

²

,

Noordin

³

et al. 2021

JHS

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1

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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“…For example, TDMA requires strict clock synchronization to avoid communication failures due to interference among devices [ 11 ]. This feature causes additional power consumption since it requires the regular transmission and detection of a clock signal [ 12 ]. In turn, FDMA is poorly suited for operation with low-cost IoT devices, as they require complex circuitry to communicate and switch between different radio channels.…”

Section: Introductionmentioning

confidence: 99%

2CA-R2: A Hybrid MAC Protocol for Machine-Type Communications

Javier‐Alvarez

¹

,

Hernandez-Duran

²

,

López-Guerrero

³

et al. 2025

Sensors

0

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

show abstract

A survey of hybrid MAC protocols for machine-to-machine communications

Cited by 11 publications

References 87 publications

A Reconfigurable Access Scheme for Massive-MIMO MTC Networks

A Reconfigurable Access Scheme for Massive-MIMO MTC Networks

Opportunities of hybrid random access protocols for M2M communications in LTE/LTE-A networks

2CA-R2: A Hybrid MAC Protocol for Machine-Type Communications

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