Massive access technology in 6G cellular Internet of things network

Feiyan TIAN; Xiaoming CHEN; Caijun ZHONG; Zhaoyang ZHANG

doi:10.11959/j.issn.2096-3750.2020.00151

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Massive access technology in 6G cellular Internet of things network

Topic:IoT and 6G | 更新时间：2024-06-05

- Massive access technology in 6G cellular Internet of things network
- Chinese Journal on Internet of Things Vol. 4, Issue 1, Pages: 92-103(2020)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.2096-3750.2020.00151
  CLC： TN91
- Published：30 March 2020，
  
  Published Online：2020-03，
- 稿件说明：
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FEIYAN TIAN, XIAOMING CHEN, CAIJUN ZHONG, et al. Massive access technology in 6G cellular Internet of things network. [J]. Chinese journal on internet of things, 2020, 4(1): 92-103.
DOI：

FEIYAN TIAN, XIAOMING CHEN, CAIJUN ZHONG, et al. Massive access technology in 6G cellular Internet of things network. [J]. Chinese journal on internet of things, 2020, 4(1): 92-103. DOI： 10.11959/j.issn.2096-3750.2020.00151.

摘要

为了实现万物互联，6G蜂窝物联网需要提供低功耗、巨连接和广覆盖的无线接入。通过对6G物联网中大规模接入技术的分析和研究，特别是结合物联网业务的偶发特性，设计了一个基于免授权随机接入协议的新型接入架构，以促进在有限频谱资源内实现高效的大规模接入。所提接入架构包括两个阶段，即联合激活检测与信道估计、数据传输。根据数据传输方向的不同，可以分为上行数据传输和下行数据传输两种方案。由于大规模免授权随机接入情况下基站获取的信道信息具有不确定性，同时考虑6G物联网设备的低功耗需求，因此，两种方案都以系统能量效率为优化目标，分别设计了稳健的接入算法。仿真结果证明了所提方案的有效性和稳健性。

Abstract

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 cellular IoT network

especially in combination with the sporadic characteristics of IoT applications

a new access framework based on the grant-free random access protocol was designed to facilitate efficient massive access with limited spectrum resources.The proposed framework consisted of two phases.One was joint activity detection and channel estimation.The other was data transmission

which was divided into two categories

uplink data transmission and downlink data transmission

according to the different directions of data transmission.Due to the uncertainty of channel state information at the base station under the massive grant-free random access and considering the low power demand of 6G IoT devices

two robust uplink and downlink access algorithms were designed by maximizing the system energy efficiency.Extensive simulation results validate the effectiveness and robustness of the proposed algorithm.

关键词

6G蜂窝物联网大规模接入能量效率低功耗巨连接广覆盖

Keywords

6Gcellular Internet of thingsmassive accessenergy efficiencylow powermassive connectivitywide coverage

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