US Patent No. 10,798,740

WIRELESS COMMUNICATION SYSTEM, ACCESS POINT, TERMINAL, AND COMMUNICATION METHOD


Patent No. 10,798,740
Issue Date October 06, 2020
Title Wireless Communication System, Access Point, Terminal, And Communication Method
Inventorship Leonardo Lanante, Fukuoka (JP)
Yuhei Nagao, Fukuoka (JP)
Hiroshi Ochi, Fukuoka (JP)
Assignee NEC CORPORATION, Minato-ku, Tokyo (JP)

Claim of US Patent No. 10,798,740

1. An access point (AP) in a wireless communication system, the wireless communication system comprising the AP and a terminal (STA) that belong to a Basic Service Set (BSS), the AP comprising:a memory configured to store instructions; and
at least one processor configured to process the instructions to:
under an environment where the AP and the STA compatible with Institute of Electrical and Electronics Engineers (IEEE) 802.11ax enable Overlapping BSS (OBSS)_Power Detect (PD)-based Spatial Reuse (SR) that includes a function of performing adjustment so as to avoid interference between the BSS and an OBSS overlapped with the BSS,
identify whether, in addition to the STA compatible with IEEE 802.11ax, a terminal that is incompatible with IEEE 802.11ax is present in the BSS, and
instruct the STA compatible with IEEE 802.11ax to not update a basic Network Allocation Vector (NAV) used for virtual carrier sense based on identifying that the terminal incompatible with IEEE 802.11ax is not present in the BSS and the STA compatible with IEEE 802.11ax is present in the BSS,
wherein the basic NAV is associated with an inter-BSS frame or an unclassified frame, and the unclassified frame was not determined to originate from the BSS or from the OBSS.