How IEEE 802.11ba Wake-Up Radio Coexists With Legacy WiFi?

The IEEE 802.11ba is a new Wireless Local Area Network (WLAN) standard to incorporate the Wake-up Radio (WuR) technology into the existing IEEE 802.11 system, where Distributed Coordination Function (DCF) is employed. IEEE 802.11ba holds importance for the Internet of Things (IoT) network deployment due to its low power WuR characteristics and backward compatibility with legacy WLAN networks. In this letter we model the mechanism of wake-up radio devices and investigate the interaction between the wake-up radio devices and the legacy devices in the coexisting scenario. The model can be utilized to quantify the behavior of WuR devices under a legacy WLAN network.