Um einen gemeinsamen Zugriff von mehreren Geräten auf das Medium zu ermöglichen, wird innerhalb des 802.11-Standards verpflichtend der Da bei Funkkommunikation eine höhere Fehlerrate auftritt, existiert bei 802.11 ein eigener Mechanismus zu Übertragungswiederholung.
Some networks will have multiple WAPs, using the same SSID and security arrangement. Oftentimes these types of public access points require no registration or password to join the network. Im Unterschied dazu bezeichnet WiFi eine Art von WLAN , die für ein ausgegebenes Zertifikat nach dem IEEE-802.11-Standard steht. WDS capability may also be referred to as repeater mode because it appears to bridge and accept wireless clients at the same time (unlike traditional bridging).
WAPs are usually fixed, and provide service to their client nodes within range. There are two definitions for wireless LAN roaming: IEEE 802.11 (auch: Wireless LAN (WLAN), Wi-Fi) bezeichnet eine IEEE-Norm für Kommunikation in Funknetzwerken. Die erste Version des Standards wurde 1997 verabschiedet. There are two main methods to establish a group owner in the Wi-Fi Direct group. An independent BSS (IBSS) is an An IBSS is a set of STAs configured in ad hoc (peer-to-peer)mode. Herausgeber ist das Institute of Electrical and Electronics Engineers (IEEE). All base stations in a WDS must be configured to use the same radio channel, and share WEP keys or WPA keys if they are used. Norman Abramson, a professor at the University of Hawaii, developed the world's first wireless computer communication network, ALOHAnet. When it is difficult to connect all of the access points in a network by wires, it is also possible to put up access points as repeaters. The WAP usually has a wired network connection and may have permanent wireless connections to other WAPs. Wireless LANs have a great deal of applications. WDS also requires that every base station be configured to forward to others in the system as mentioned above. A relay base station relays data between remote base stations, wireless clients or other relay stations to either a main or another relay base station. WLAN bzw. Others can be accessed once registration has occurred or a fee is paid. In that case connecting to any WAP on that network joins the client to the network and the client software will try to choose the WAP that gives the best service, such as the WAP with the strongest signal. Current wireless distribution systems are mostly based on Since wireless communication uses a more open medium for communication in comparison to wired LANs, the 802.11 designers also included encryption mechanisms: Most Wi-Fi networks are deployed in infrastructure mode. Für die physische Schicht sind im ursprünglichen Standard zwei Dadurch, dass das 2,4-GHz-Band in den meisten Ländern lizenzfrei genutzt werden darf, haben Produkte nach dem Standard 802.11b/g eine weite Verbreitung gefunden. Each ESS has an ID called the SSID which is a 32-byte (maximum) character string. They can be configured to different service set identifiers. In a Wi-Fi P2P group, the group owner operates as an access point and all other devices are clients. A distribution system (DS) connects access points in an extended service set. The system became operational in 1971 and included seven computers deployed over four islands to communicate with the central computer on the Oahu island without using phone lines. In one approach, the user sets up a P2P group owner manually. Bei einer korrekten Übertragung bestätigt der Empfänger die Datenübertragung, bei einer fehlerhaften Übertragung müssen die Daten erneut gesendet werden. Die neuen WLAN-Standards: So schnell wird Ihr Netz. A bridge can be used to connect networks, typically of different types. The concept of a DS can be used to increase network coverage through roaming between cells. Group owner intent value can depend on whether the wireless device performs a cross-connection between an infrastructure WLAN service and a P2P group, remaining power in the wireless device, whether the wireless device is already a group owner in another group or a received signal strength of the first wireless device.