Wireless network protocol description WLAN family members description

802.11a

The High-Speed WLAN protocol uses the 5G Hz band. The maximum speed is 54 Mbps. The actual usage rate is about 22-26 Mbps. Being incompatible with 802.11b is the biggest drawback.

802.11b

Currently, the most popular WLAN protocol uses the 2.4G Hz band. The maximum speed is 11 Mbps. The actual usage rate is variable based on the distance and signal strength (1-2 Mbps within 150, 11 Mbps within 50 ). The low rate of 802.11b makes the cost of wireless data network affordable. In addition, the compatibility between 802.11b devices is guaranteed by the products of all manufacturers certified by a unified certification authority. Compatibility promotes competition and user acceptance.

802.11e

QoS Based on WLAN, through which 802.11a, B, and gcan be used for VoIP. That is to say, 802.11e is a protocol for implementing the voice call function through the wireless data network. This protocol will be a powerful weapon for wireless data networks to compete with traditional mobile communication networks.

802.11 GB

802.11g is an extension of 802.11b in the same frequency band. Supports the maximum rate of 54Mbps. Compatible with 802.11b. This standard has already defeated 802.11a as the next standard for wireless data networks.

802.11 h

802.11h is an extension of 802.11a to be compatible with other 5G Hz band standards, such as HyperLAN2 used by the European Union.

802.11i

802.11i is a new wireless data network security protocol. The vulnerabilities in the popular WEP protocol will become a security risk for wireless data networks. 802.11i proposed a new TKIP protocol to solve this security problem.