Inter-network spatial sharing with interference mitigation based on IEEE 802.11ad WLAN system

With the significant growth of mobile data traffic in the coming years, 60-GHz millimeter-wave (mm-wave) communication shows great potential in high throughput networks to meet this demand. The directional transmission in 60-GHz radio has motivated studies of spatial sharing (SPSH). In IEEE 802.11ad, a widely acknowledged protocol of 60-GHz system, spatial sharing inside a network is supported. In addition, different networks are recommended to transmit in non-overlapping period to mitigate inter-network interference, which is hard to employ in real system under circumstances such as heavy traffic load. However, there is no specific mechanism for spatial sharing with interference mitigation among networks in IEEE 802.11ad standard. Therefore, we propose an inter-network spatial sharing strategy in IEEE 802.11ad Wireless Local Area Networks (WLANs) in this paper. Specifically, the strategy includes SPSH report, which helps establish a complete interference and coexistence database. Corresponding time scheduling scheme is based on mutual avoidance of interference. Extensive simulations have shown that our proposed strategy enhances spatial gain and depicted more robust performance compared with existing mechanism in IEEE 802.11ad.