A Medium Access Control Mechanism for Distributed In-band Full-Duplex Wireless Networks

作者：Zuo, Haiwei; Sun, Yanjing^*; Li, Song; Ni, Qiang; Wang, Xiaolin; Zhang, Xiaoguang

来源：KSII Transactions on Internet and Information Systems, 2017, 11(11): 5338-5359.

DOI：10.3837/tiis.2017.11.009

• In-band Full-duplex
• Distributed mechanism
• Medium access control
• Throughput
• Delay

In-band full-duplex (IBFD) wireless communication supports symmetric dual transmission between two nodes and asymmetric dual transmission among three nodes, which allows improved throughput for distributed IBFD wireless networks. However, inter-node interference (INI) can affect desired packet reception in the downlink of three-node topology. The current Half-duplex (HD) medium access control (MAC) mechanism RTS/CTS is unable to establish an asymmetric dual link and consequently to suppress INI. In this paper, we propose a medium access control mechanism for use in distributed IBFD wireless networks, FD-DMAC (Full-Duplex Distributed MAC). In this approach, communication nodes only require single channel access to establish symmetric or asymmetric dual link, and we fully consider the two transmission modes of asymmetric dual link. Through FD-DMAC medium access, the neighbors of communication nodes can clearly know network transmission status, which will provide other opportunities of asymmetric IBFD dual communication and solve hidden node problem. Additionally, we leverage FD-DMAC to transmit received power information. This approach can assist communication nodes to adjust transmit powers and suppress INI. Finally, we give a theoretical analysis of network performance using a discrete-time Markov model. The numerical results show that FD-DMAC achieves a significant improvement over RTS/CTS in terms of throughput and delay.

• 出版日期2017-11-30
• 单位中国矿业大学（北京）