Collaborative OBSS Interference Mitigation for Wireless Communication Systems

摘要

A method of mitigating inter-BSS interference via synchronized inter-BSS operation is proposed. By aligning the transmission of UL and DL transmission in two overlapping OBSSs, the inter-BSS STA-to-STA and inter-BSS AP-to-AP types of interference can be eliminated. Furthermore, based on the BSS overlapping geometry and the STA location, different interference mitigation schemes can be applied to mitigate inter-BSS AP-to-STA and inter-BSS STA-to-AP types of interference.

主权项

1. A method comprising:
performing uplink and downlink timing synchronization between a first access point (AP1) serving a first basic service set (BSS1) and a second AP2 serving a second BSS2 in a wireless communication network; dividing wireless stations (STAB) in BSS1 into a first group and a second group, wherein transmissions by STAB in the first group do not interfere with AP2 reception, and wherein transmissions by STAB in the second group interfere with AP2 reception; and coordinating between BSS1 and BSS2 for STAB in BSS1 and BSS2 to communicate based on a group status and a predetermined rule to mitigate interference between BSS1 and BSS2.