Scholarlink

<p>The collision of massive Machine-Type Communication (MTC) devices during the Random Access (RA) procedure in 3GPP cellular networks degrades network throughput for MTC applications. To reduce collisions, stationary devices are often treated as a separate group from mobile devices due to their distinct requirements and characteristics. The fixed-location feature of devices, such as smart meters, can be leveraged to alleviate RA collisions by using their nearly constant Timing Advance (TA) values. In this paper, the information from selected peaks of the correlations between the received preamble signals and a predefined preamble set at the BS is used to determine the number of devices transmitting the same preamble code. Adjacent peaks, based on their TA values, are grouped into clusters, and the Resource Block (RB) is assigned to the strongest peak in each cluster. Numerical simulations show that the proposed scheme not only improves RA throughput but also reduces the average resource utilization per successful attempt compared to what is expected from the conventional RA procedure.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhanced random access throughput for fixed-location machine-type communications devices: a collision resolution scheme

  • 期刊论文

  • 发表日期：

    2025年6月22日

查看全文
  • Zahra Alavikia

摘要

The collision of massive Machine-Type Communication (MTC) devices during the Random Access (RA) procedure in 3GPP cellular networks degrades network throughput for MTC applications. To reduce collisions, stationary devices are often treated as a separate group from mobile devices due to their distinct requirements and characteristics. The fixed-location feature of devices, such as smart meters, can be leveraged to alleviate RA collisions by using their nearly constant Timing Advance (TA) values. In this paper, the information from selected peaks of the correlations between the received preamble signals and a predefined preamble set at the BS is used to determine the number of devices transmitting the same preamble code. Adjacent peaks, based on their TA values, are grouped into clusters, and the Resource Block (RB) is assigned to the strongest peak in each cluster. Numerical simulations show that the proposed scheme not only improves RA throughput but also reduces the average resource utilization per successful attempt compared to what is expected from the conventional RA procedure.