802.11 is the standard for wireless network connections, which is what we usually call WIFI. 802.11b refers to the 11M rate standard, 802.11g refers to the 54M rate standard, and 802.11n refers to the 150M rate standard. They are backwards compatible.
AP is the abbreviation of Access Point, generally translated as "wireless access node". It mainly provides access from wireless workstations to wired LAN and from wired LAN to wireless workstations within the coverage of the access point. Wireless workstations can communicate with each other through it. In layman's terms, wireless AP is the communication bridge between wireless network and wired network. Since the coverage area of ??the wireless AP is a circular area that spreads outward, the wireless AP should be placed in the center of the wireless network as much as possible, and the straight-line distance between each wireless client and the wireless AP should not exceed 30 meters. Avoid communication failure caused by excessive communication signal attenuation.
MIMO (Multiple Input Multiple Output) is an antenna technology used for wireless communications in which multiple antennas are used for both the source (transmitter) and destination (receiver). Antennas at each end of the communications loop are combined to achieve minimal errors and optimal data transmission speeds. MIMO is one of several forms of smart antenna technology. The others are MISO (multiple in, one out) and SIMO (one in, multiple out).