Computer Science

Computer Science ›› 2021, Vol. 48 ›› Issue (11A): 464-470.doi: 10.11896/jsjkx.201200026

• Network & Communication • Previous Articles     Next Articles

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).

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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

CLC Number: 

  • TP914
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