Imperium Patent Works
Enhanced channel contention schemes for high-efficiency WLAN
A unified channel contention scheme is proposed such that spatial reuse can be enabled by a wireless station (STA) when a basic service set (BSS) color of a received signal cannot be resolved. If the detected frame is an intra-BSS frame, then the STA should not contend the channel for the PPDU duration. If the detected frame is an inter-BSS frame, then the STA uses OBSS Packet Detection (OBSS-PD) level as the CCA level for channel contention. Furthermore, when BSS color cannot be resolved, channel contention schemes for WiFi signal and non-WiFi signal are differentiated. If the received signal is detected as WiFi signal, then the STA uses WiFi-SIG Detection (WD) level as the CCA level for channel contention. If the received signal is detected as non-WiFi signal, then the STA uses Non-WiFi-SIG Detection (NWD) level as the CCA level for channel contention.
MEDIATEK INC.
H H H H H H H H H H
H04W H04L H04W H04L H04W H04J H04W H04W H04L H04L
additional inventional additional inventional inventional additional inventional additional additional inventional
Chao-Chun Jianhan RongSheng Li
Wang Liu Huang Ma