基于可靠多播通信的分布式无线信道最优接入方法研究

王一竹; 张周; 马丕明; 任保全

doi:10.11959/j.issn.2096-3750.2022.00290

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基于可靠多播通信的分布式无线信道最优接入方法研究

理论与技术 | 更新时间：2024-08-16

- 基于可靠多播通信的分布式无线信道最优接入方法研究
- Research on optimal channel access method for distributed wireless network based on reliable multicast communication
- 物联网学报 2022年6卷第4期页码：14-26
- 作者机构：
  
  1. 军事科学院，北京 100071
  2. 山东大学信息科学与工程学院，山东青岛 266237
- 作者简介：
  
  [ "王一竹（1997- ），女，军事科学院博士生，主要研究方向为分布式网络协议设计等" ]
  [ "张周（1986- ），男，博士，军事科学院副研究员，主要研究方向为分布式机会信道接入和认知无线电网络等" ]
  [ "马丕明（1970- ），女，博士，山东大学信息科学与工程学院副教授，主要研究方向为低密度奇偶校验码、无线物理层安全以及无线通信中的资源分配和优化等" ]
  [ "任保全（1974- ），男，军事科学院系统工程研究院高级工程师，主要研究方向为军事通信网络技术" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(61801504);国家自然科学基金资助项目;The National Natural Science Foundation of China(62171456)
- DOI：10.11959/j.issn.2096-3750.2022.00290
  中图分类号： TN92
- 纸质出版日期：2022-12-30，
  
  网络出版日期：2022-12，
- 稿件说明：
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王一竹, 张周, 马丕明, 等. 基于可靠多播通信的分布式无线信道最优接入方法研究[J]. 物联网学报, 2022,6(4):14-26.

YIZHU WANG, ZHOU ZHANG, PIMING MA, et al. Research on optimal channel access method for distributed wireless network based on reliable multicast communication. [J]. Chinese journal on internet of things, 2022, 6(4): 14-26.
王一竹, 张周, 马丕明, 等. 基于可靠多播通信的分布式无线信道最优接入方法研究[J]. 物联网学报, 2022,6(4):14-26. DOI： 10.11959/j.issn.2096-3750.2022.00290.

YIZHU WANG, ZHOU ZHANG, PIMING MA, et al. Research on optimal channel access method for distributed wireless network based on reliable multicast communication. [J]. Chinese journal on internet of things, 2022, 6(4): 14-26. DOI： 10.11959/j.issn.2096-3750.2022.00290.

摘要

为解决分布式网络中多用户竞争与信道时变性导致的频谱利用效率低的问题，对基于多播通信的分布式无线信道接入问题进行了研究。基于最优停止理论，建立了多个多播组分布式无线信道接入过程统计学模型，提出了一种基于可靠多播通信的分布式无线信道接入方法。各信源以分布方式竞争信道，获胜信源通过对比可靠多播接入速率与固定阈值，动态决定是否接入信道，完成信源对所有信宿的可靠多播传输。理论分析证明，该方法可实现可靠多播通信下系统吞吐量的统计值最优。设计了相应低复杂度信道接入算法，算法具有纯阈值结构，该方法有良好的工程可实现性。数值结果表明，所提出的信道接入方法可有效提升系统平均吞吐量。

Abstract

To address the low spectrum utilization issue of the distributed network due to multi-user collision and channel time-varying nature

the distributed channel access problem for multicast communication was investigated.Based on the optimal stopping theory

a statistical model of distributed channel access under wireless multicasts was established

and an optimal distributed wireless channel access method under reliable multicast communication was proposed.Each source competes for the channel in a distributed manner

the winner source determines whether to access the shared channel by comparing the reliable multicast access rate with a pure threshold to complete the reliable multicast communication from the winner source to all the sinks.Theoretic optimality of the method was proved rigorously.A corresponding low-complexity algorithm was designed

which has a pure threshold structure and good engineering practicability.Numerical results show that the proposed channel access method can effectively improve the average throughput of the system.

关键词

可靠多播通信最优停止理论分布式无线信道接入

Keywords

reliable multicast communicationoptimal stopping theorydistributed wireless channel access

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