Multi-BSS Association and Cooperation Based Handoff Scheme for the Next Generation mmWave WiFi: IEEE 802.11ay

Wireless LAN (WLAN) based on IEEE 802.11 protocol standard is widely used due to its advantages of low cost, fast speed, flexibility and convenience. Among them, the coverage distance of the millimeter wave (mmWave) WiFi such as IEEE 802.11ay is relatively short. In order to meet the needs of Virtual Reality (VR), high definition (HD) video and other emerging services, mmWave WiFi often adopts high-dense deployment. The mobility of nodes often causes multi-BSS handoff. MmWave WiFi handoff process is complex and consumes a lot of network signaling and time. Based on the advantages of multi-BSS association and cooperation, this paper designs a handoff protocol for mmWave WiFi to complete multi-BSS handoff without interruption of business continuity. Through simulation verification and comparison with other multi-BSS handoff technologies, proposed protocol improves the throughput and reduces the time delay.