TY - GEN
T1 - Double-Threshold-Based Massive Random Access Protocol for Heterogeneous MTC Networks
AU - Xie, Yuncong
AU - Ren, Pinyi
AU - Xu, Dongyang
N1 - Publisher Copyright:
© 2021, ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering.
PY - 2021
Y1 - 2021
N2 - In this paper, we consider the uplink transmission of a heterogeneous MTC network with massive number of delay-insensitive terminals and URLLC terminals coexistence, and propose a novel double-threshold-based massive random access (DT-MRA) protocol. On the one hand, the proposed DT-MRA protocol allows partial delay-insensitive terminals temporarily preempting URLLC spectrum channels to alleviate the traffic overload, via adaptively tuning access control parameters including ACB factor and traffic offloading factor. On the other hand, a grant-free access mechanism with packet repetition is applied to support the stringent QoS requirements of URLLC. Then, we formulate an optimization problem to maximize the access throughput of delay-insensitive terminals, while satisfying the QoS requirements of each URLLC terminal. Based on the statistical traffic load information, an optimal access control strategy is also developed to solve this optimization problem. Simulation results validate the theoretical analyses and demonstrate the effectiveness of our proposed DT-MRA protocol, in terms of improving access throughput.
AB - In this paper, we consider the uplink transmission of a heterogeneous MTC network with massive number of delay-insensitive terminals and URLLC terminals coexistence, and propose a novel double-threshold-based massive random access (DT-MRA) protocol. On the one hand, the proposed DT-MRA protocol allows partial delay-insensitive terminals temporarily preempting URLLC spectrum channels to alleviate the traffic overload, via adaptively tuning access control parameters including ACB factor and traffic offloading factor. On the other hand, a grant-free access mechanism with packet repetition is applied to support the stringent QoS requirements of URLLC. Then, we formulate an optimization problem to maximize the access throughput of delay-insensitive terminals, while satisfying the QoS requirements of each URLLC terminal. Based on the statistical traffic load information, an optimal access control strategy is also developed to solve this optimization problem. Simulation results validate the theoretical analyses and demonstrate the effectiveness of our proposed DT-MRA protocol, in terms of improving access throughput.
KW - Massive machine-type communications (mMTC)
KW - Random access protocol
KW - Ultra-reliable and low-latency communications (URLLC)
UR - https://www.scopus.com/pages/publications/85101402665
U2 - 10.1007/978-3-030-67514-1_40
DO - 10.1007/978-3-030-67514-1_40
M3 - 会议稿件
AN - SCOPUS:85101402665
SN - 9783030675134
T3 - Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
SP - 493
EP - 509
BT - IoT as a Service - 6th EAI International Conference, IoTaaS 2020, Proceedings
A2 - Li, Bo
A2 - Li, Changle
A2 - Yang, Mao
A2 - Yan, Zhongjiang
A2 - Zheng, Jie
PB - Springer Science and Business Media Deutschland GmbH
T2 - 6th EAI International Conference on IoT as a Service, IoTaaS 2020
Y2 - 19 November 2020 through 20 November 2020
ER -