计算机科学 ›› 2021, Vol. 48 ›› Issue (11A): 464-470.doi: 10.11896/jsjkx.201200026

• 网络& 通信 • 上一篇    下一篇

预约式两级调度带内全双工接入控制策略研究

官铮1, 吕伟1, 贾徭1, 杨志军1,2   

  1. 1 云南大学信息学院 昆明650500
    2 云南省教育厅教育科学研究院 昆明 650223
  • 出版日期:2021-11-10 发布日期:2021-11-12
  • 通讯作者: 杨志军(yzj@ynjy.cn)
  • 作者简介:gz_627@sina.com
  • 基金资助:
    国家自然科学基金(61761045)

Research on Two-level Scheduled In-band Full-duplex Media Access Control Mechanism

GUAN Zheng1, LYU Wei1, JIA Yao1, YANG Zhi-jun1,2   

  1. 1 School of Information Science and Engineering,Yunnan University,Kunming 650500,China
    2 Institute of Education Sciences,Educational Department of Yunnan Province,Kunming 650223,China
  • Online:2021-11-10 Published:2021-11-12
  • About author:GUAN Zheng,born in 1982,Ph.D,associate professor,master supervisor,is a member of CCF.Her main research interests include image processing and polling and communication systems.
    YANG Zhi-jun,born in 1968,professor.His main research interests include computer communication and network,wireless networks,polling system and ICT in education.
  • Supported by:
    National Natural Science Foundation of China(61761045).

摘要: 带内全双工(in-band full-duplex,IBFD) 无线通信允许节点在同一频段上同时进行发送和接收,是提高频谱利用率的有效途径。文中提出一种预约式两级调度全双工(Two-level Scheduled in-band Full-duplex,TSIB-FD)无线接入控制策略,将接入过程划分为信息收集、全双工数据传输和确认阶段,由AP在信息收集阶段感知节点业务及干扰关系生成一级调度方案,数据传输阶段AP根据一级调度方案建立全双工链路,并在数据传输过程中根据业务需求变化进行二次调度,完成数据传输后统一确认。仿真结果表明,文中提出的TSIBFD在确保延时的条件下提升了系统吞吐量,实验表明,最优情况下吞吐量相比Janus可提升38.5%,相比HBPOLL实现了1倍的增长。

关键词: 带内全双工, 两级调度, 媒体接入控制, 无线局域网, 预约服务

Abstract: In-band full-duplex (IBFD) wireless communication allows the nodes to send and receive simultaneously in the same frequency band,which is an effective way to improve the spectrum utilization rate.This paper proposes a two-level scheduled in-band full-duplex (TSIB-FD) for wireless networks,which divides the access process into three stages:information collection,full-duplex data transmission and acknowledgement.A first-level scheduling scheme is generated by AP in the information collection stage by node business requirements and inter-interference relations.During thefirst-level full-duplex link data transmission,AP can build the second-level scheduling dynamically according to current transmission.ACK is processed after complete bidirectional data transmission.The simulation results show that TSIB-FD has improved the system throughput with a lower delay.Compared with Janus,the throughput can be improved by 38.5%,and compared with HBPOLL,it can be improved by 100%.

Key words: In-band full-duplex, MAC, Scheduled service, Two-level schedule, WLAN

中图分类号: 

  • TP914
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