Wake‐up Radio Medium Access Control
Steve Shellhammer, Alfred Asterjadhi, Yanjun Sun · 2023
This chapter describes the key functionalities of the medium access control layer of IEEE 802.11ba, with a focus on how wake-up radio (WUR) is integrated into and improves network discovery, connectivity, synchronization, and power management. During network discovery a station (STA) scans the available channels in the frequency bands it supports to discover a suitable access point to which the STA may associate with or eventually roam to, at some point in the future. The chapter also describes how frequency division multiple access (FDMA) and protected WUR frames are utilized to improve efficiency and security of transmissions over the WUR. IEEE 802.11ba has defined new frames and procedures for both the MR and the WUR to achieve both low latency and lower power consumption in an IEEE 802.11 network. To improve the scalability of WUR operation, WUR FDMA operation is defined to enable the transmission of multiple WUR wake-up frames multiplexed in frequency.