A Directional Medium Access Control Protocol for 5G Millimeter-Wave Local Area Networks
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Springer Nature Switzerland AG 2019. The vast amount of spectrum available at millimeter-wave bands has made millimeter-wave communications one of the key enabling technologies of the fifth-generation cellular network. The high directionality of the transmitter and the receivers operating at millimeter-wave frequencies introduces certain novel challenges for medium access control. Specifically, in a scenario where there is relative motion between the transmitter and the receivers, the transmitter must keep track of the direction in which each received signal is, and the receivers must keep track of where the transmitter is, so that they can orient their antenna boresight towards each other, or in a non-line-of-sight environment, in directions that optimize the link gain, in order to establish a physical link. In this paper, we propose TrackMAC, a directional medium access control protocol for millimeter-wave local area networks, that allows an access point to efficiently track every station associated with it at small overheads. The proposed protocol can be implemented squarely within the specifications of the IEEE 802.11ad standard for millimeter-wave local area networking.
