The former refers to the existence of a dominant AP in the system, and all stations that want to communicate with each other must first connect to the AP before they can communicate;
The former refers to the existence of a dominant AP in the system, all sites that want to communicate with the other party must first communicate with the AP connection;
The former means that there is a dominant AP in the system, and all the sites that want to communicate with each other must connect with the AP before they can communicate;<br>