Medium access control design for full duplex wireless systems: challenges and approaches
Medium access control design for full duplex wireless systems: challenges and approaches
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DOI：
10.1109/mcom.2015.7105649
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发表时间：
2015-05
影响因子：
11.2
通讯作者：
K. Thilina;H. Tabassum;E. Hossain;Dong In Kim
中科院分区：
文献类型：
--
作者：
K. Thilina;H. Tabassum;E. Hossain;Dong In Kim
自干扰消除技术的最新进展实现了带内全双工（FD）传输，其中无线节点可以在相同频带中同时发送和接收。然而，为了在无线网络中充分利用FD技术的益处，除了物理（PHY）层问题之外，还需要解决诸如节点间冲突、半双工（HD）和FD用户之间的公平性、FD传输的不同模式的机会选择以及同步问题的介质访问控制（MAC）层问题。为此，本文首先讨论FD传输的基本概念、潜在优势和主要网络拓扑。然后，我们强调直接的挑战（无论是在物理层和MAC层），需要解决在设计FD无线系统。现有的全双工MAC（FD-MAC）协议之间的定性比较。最后，讨论了FD-MAC协议设计的主要要求和研究问题，并强调了FD技术在蜂窝无线网络中的意义。
Recent advances in self-interference cancellation techniques enable in-band full-duplex (FD) transmission in which a wireless node can simultaneously transmit and receive in the same frequency band. However, to fully exploit the benefits of FD technology in a wireless network, in addition to the physical (PHY) layer issues, medium access control (MAC) layer issues such as inter-node collisions, fairness between half-duplex (HD) and FD users, opportunistic selection of different modes of FD transmission, and synchronization issues need to be resolved. To this end, this article first discusses the fundamental concepts, potential benefits, and primary network topologies of FD transmission. We then highlight immediate challenges (both in the PHY and MAC layers) that need to be addressed in designing FD wireless systems. A qualitative comparison among the existing full-duplex MAC (FD-MAC) protocols is then provided. Finally, the primary requirements and research issues for the design of FD-MAC protocols are discussed, and implications of FD technology in cellular wireless networks are highlighted.