Glossary of Wireless LAN

PCI slot wireless network card:You can enable your computer to communicate with other computers over the network without cables. The wireless network adapter is similar to other network adapters. The difference is that it uses radio waves instead of physical cables to send and receive data. An external antenna is required for wireless network adapters to expand their effective range.

PCMCIA slot wireless network adapter:Just like the wireless network cards mentioned above, they are suitable for the PC card slots of local computers. Similar to a desktop computer, you can use an external antenna to enhance the PCMCIA wireless Nic.

AP Access Point (Wireless LAN transceiver ):The wireless Hub for wireless networks is the core of wireless networks. It is an access point for mobile computer users to access the wired Ethernet backbone. The AP can be easily installed on the ceiling or walls, and the maximum coverage of the open space can reach 300 meters, and the transmission rate can reach 11 Mbps.

Antenna:The wireless LAN antenna can expand the coverage of the wireless network and connect different office buildings. In this way, you can move your laptop between buildings or between rooms with you.

Dynamic rate conversion:When the RF condition deteriorates, the data transmission rate can be reduced from 11 Mbps to 5.5 Mbps, 2 Mbps, and 1 Mbps.

Roaming support:When users move between buildings or company departments, seamless access is allowed between access points. The wireless network standard allows wireless network users to use the same channel in different wireless bridge network segments or roam between different channels.

Server Load balancer:When the AP load is too large or the signal is weakened, the NIC can change the Access Point AP connected to it and automatically switch to the best available AP to improve performance.

Dynamic rate selection function:The IEEE 802.11 wireless network standard allows mobile users to set the automatic rate selection (ARS) mode, the ARS function automatically selects the optimal transmission rate for each transmission path based on the signal quality and distance from the Bridge access point, this function can also be set to a different fixed application rate based on different application environments.

Power Consumption management functions:IEEE 802.11 also defines the signaling mode on the MAC layer. The control of the power management software enables mobile users to have the longest battery life. Power Management puts the network in sleep state when there is no data transmission, so data packets may be lost. To solve this problem, IEEE 802.11 stipulates that the AP should have a buffer to store information. Mobile users in sleep state will wake up regularly to recover the information.

Confidentiality:The latest WLAN standard uses a method to load confidential bytes, so that wireless networks have the same level of confidentiality as wired Ethernet. The other end of the wireless network device must use the same password encoding method to communicate with each other. When a wireless user connects to a wired network using an AP access point, it must pass the security authentication of the AP access point. This technology not only prevents air eavesdropping, but also is a method for Wireless Network Authentication for effective mobile users.

DHCP support:Dynamic Host Configuration Protocol (DHCP) automatically obtains the rented IP address from the DHCP server, so that laptop users can automatically obtain a new IP address when the network is interrupted to continue working, thus enjoying Seamless Roaming.

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