面向差异化MTC场景需求的随机接入方案

吴哲夫; 杨鑫源; 翟文超; 韩会梅

doi:10.11959/j.issn.1000-436x.2020222

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面向差异化MTC场景需求的随机接入方案

学术通信 | 更新时间：2024-06-05

- 面向差异化MTC场景需求的随机接入方案
- Random access scheme for different MTC scenario requirement
- 通信学报 2020年41卷第11期页码：176-184
- 作者机构：
  
  1. 浙江工业大学信息工程学院，浙江杭州 310023
  2. 中国计量大学信息工程学院，浙江杭州 310018
- 作者简介：
  
  [ "吴哲夫（1971- ），男，浙江金华人，博士，浙江工业大学副教授，主要研究方向为数据通信网络、无线感知、智能无线应用等" ]
  [ "杨鑫源（1994- ），男，河南信阳人，浙江工业大学硕士生，主要研究方向为随机接入" ]
  [ "翟文超（1988- ），男，河南驻马店人，博士，中国计量大学讲师，主要研究方向为载波同步、索引调制、智能曲面、随机接入等" ]
  [ "韩会梅（1990- ），女，山东济宁人，博士，浙江工业大学讲师，主要研究方向为机器学习、随机接入、大规模 MIMO、智能曲面等" ]
- 基金信息：
  
  国家自然科学基金资助项目(62001419);浙江省自然科学基金资助项目(LY18F010025);浙江省自然科学基金资助项目(LY13F010011);浙江省自然科学基金资助项目(LQ21F010012);浙江省教育厅科研基金资助项目(Y201839636)
- DOI：10.11959/j.issn.1000-436x.2020222
  中图分类号： TN929.53
- 网络首发：2020-11，
  
  纸质出版：2020-11-25
- 稿件说明：
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吴哲夫, 杨鑫源, 翟文超, 等. 面向差异化MTC场景需求的随机接入方案[J]. 通信学报, 2020,41(11):176-184.

Zhefu WU, Xinyuan YANG, Wenchao ZHAI, et al. Random access scheme for different MTC scenario requirement[J]. Journal on Communications, 2020, 41(11): 176-184.
吴哲夫, 杨鑫源, 翟文超, 等. 面向差异化MTC场景需求的随机接入方案[J]. 通信学报, 2020,41(11):176-184. DOI： 10.11959/j.issn.1000-436x.2020222.

Zhefu WU, Xinyuan YANG, Wenchao ZHAI, et al. Random access scheme for different MTC scenario requirement[J]. Journal on Communications, 2020, 41(11): 176-184. DOI： 10.11959/j.issn.1000-436x.2020222.

摘要

针对机器类通信（MTC）中大规模机器类通信（mMTC）和超可靠低时延通信（URLLC）的混合场景下差异化的随机接入需求，提出了一种面向差异化MTC场景需求的随机接入方案。该方案根据设备定时提前（TA）信息进行分组：对于URLLC设备，基站为组内核心设备预留前导码资源并通过非竞争方式接入网络，进而满足URLLC场景的高可靠低时延接入需求；对于mMTC设备，基站利用不同设备组TA信息的差异来区分选择相同前导码设备，并利用迭代干扰消除（SIC）检测设备数据信息，进而满足mMTC场景的海量接入需求。仿真结果表明，本方案能够显著提升成功接入设备数。

Abstract

For the different random access requirements of the mixed scenarios of ultra-reliable low latency (URLLC) and massive machine type communications (mMTC) in MTC

a random access scheme based on devices grouping was proposed.The proposed scheme divided the MTC devices into several groups based on the timing advance (TA) information:for the URLLC scenario

preamble resources were reserved for core devices in each group

and the URLLC devices accessed the network via the contention-free mechanism

to satisfy the ultra-reliable low latency access requirement; for the mMTC scenario

the base station utilized the different TA information in different group to identify devices selecting the same preamble

and performed successive interference cancellation (SIC) algorithm to detect the data information

to satisfy the massive access requirement.Simulation results demonstrate that the proposed scheme can significantly increase the number of the successful devices.

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references

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