Queue-Aware Access Prioritization for Massive Machine-Type Communication

One of the pivotal services of the fifth generation (5G) of cellular technology is massive Machine-type Communications (mMTCs), which is intended to support connecting high density of machine-type devices (MTDs). Random access channel of long-term evolution (LTE)/LTE advanced needs to be modified in...

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Bibliographic Details
Published in:IEEE internet of things journal Vol. 9; no. 17; pp. 15858 - 15873
Main Authors: Chowdhury, Mayukh Roy, De, Swades
Format: Journal Article
Language:English
Published: Piscataway IEEE 01.09.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
3GPP
Access class barring (ACB)
buffer overflow
Buffer overflows
Buffers
dynamic priority access classification
Internet of Things
Internet of Things (IoT)
Long Term Evolution
Machine-to-machine communications
Markov chains
massive machine-type communication (mMTC)
Optimization
Packets (communication)
queue awareness
Queueing analysis
Queues
Random access
storage constraint
Throughput
ISSN:2327-4662, 2327-4662
Online Access:Get full text
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Summary:One of the pivotal services of the fifth generation (5G) of cellular technology is massive Machine-type Communications (mMTCs), which is intended to support connecting high density of machine-type devices (MTDs). Random access channel of long-term evolution (LTE)/LTE advanced needs to be modified in order to support the large simultaneous arrival of MTDs. 3GPP suggested access class barring (ACB) as a mechanism to inhibit network congestion in the mMTC or massive Internet of Things (IoT) scenario. Consequently, in devices that are repeatedly ignored by ACB, the queue of data packets keeps growing. In storage-constrained IoT nodes with limited buffer, this may lead to packet drop due to buffer overflow, causing a decline in the overall throughput of the system. To address this issue, a novel queue-aware prioritized access classification (QPAC)-based ACB technique is proposed in this article, where MTDs having data queue size close to its buffer limit are dynamically given higher priority in ACB. To study the queue build-up at each MTC device, a node-centric analysis of ACB in the buffer-constrained scenario is performed using a 2-D Markov chain. It is shown that the proposed QPAC scheme, with optimal model parameters obtained by maximizing overall system utility, offers up to 70% gain in throughput compared to the nearest competitive dynamic ACB scheme.
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ISSN:2327-4662
2327-4662
DOI:10.1109/JIOT.2022.3151408