WLAN or wireless LAN, wireless communication technology and combines the advantages of computer networks to wireless channel for the transmission medium to achieve in the short distance wireless network communications. Based wireless local area network or a traditional wired LAN, it is only on the basis of the wired LAN through a wireless access point (AP), wireless bridges, wireless LAN and other equipment to enable wireless communication can be achieved.
WLAN are easy to install, easy to expand, easy maintenance, high speed, mobility,the use of open spectrum, and many other features, both enterprises and individuals, or the operators have already agreed to wireless data transmission in WLAN Advantage. WLAN with the widely used Ethernet seamlessly, enabling users to access the Internet, online transactions, remote office and other applications. With the continuous expansion of application fields, a variety of business applications on the WLAN put forward higher requirements, such as speed, security, QoS, roaming and so on. In addition to other data, WLAN is also expected breakthrough in wireless voice. Here a brief development of the current WLAN hotspot areas.
1. Rate:
Bandwidth is the foundation of all business. WLAN equipment is widely used are based on 802.11b standard, the maximum wireless speed up to 11Mbps. In fact, the WLAN standard wireless header overhead, access control, users really get the highest rate of only about half the rate. 802.11a and 802.11g wireless interface device speed 54Mbps, 30Mbps actual throughput is only around the maximum. IEEE 802.11n working group is currently developing a higher rate WLAN standard rate can be increased to 108/320Mbps; and further improve its administrative overhead and efficiency to enhance the WLAN performance. Read the rest of this entry »