Highlights of Wi-Fi technology in Wireless Networks

What is wifiwi-fi)

The IEEE 802.11b wireless network specification is a variant of the IEEE 802.11 Network specification. The maximum bandwidth is 11 Mbps. when the signal is weak or there is interference, the bandwidth can be adjusted to 5.5 Mbps, 2 Mbps, and 1 Mbps. The bandwidth is automatically adjusted to effectively ensure the stability and reliability of the network. Its main features are: fast speed and high reliability. in the open area, the communication distance can reach 305 meters. in the Closed Area, the communication distance is 76 meters to 122 meters, it facilitates the integration with existing wired Ethernet networks, reducing the cost of networking.

Like Bluetooth, Wi-Fi WirelessFidelity is a short-distance wireless technology used in offices and homes. This technology uses a 2-4 GHz band, which is currently not licensed as a wireless band. Currently, two standards are available: IEEE802.11a and IEEE802.11b. This technology has its own advantages, so it is favored by manufacturers.

Wi-Fi technology has the following advantages:

First, radio waves cover a wide range. Bluetooth-based radio waves cover a very small area with a radius of about 50 feet or about 15 meters, the Wi-Fi radius can reach about 300 feet or about 100 meters. Needless to say, the Office can also be used in the whole building. A new vswitch launched by Vivato recently. It is reported that this product can extend the current Wi-Fi wireless network distance of 300 feet close to 100 meters to 4 English Rio 6.5 kilometers.

Second, although the wireless communication quality transmitted by Wi-Fi technology is not very good, the data security performance is worse than Bluetooth, and the transmission quality needs to be improved, but the transmission speed is very fast, it can reach 11 mbps, meeting personal and social informatization needs.

Third, vendors have a low entry threshold. Manufacturers only need to set up "hot spots" in areas with intensive personnel such as airports, stations, coffee shops and libraries, and connect the Internet to the above sites through express lines. In this way, because the electric waves emitted by "hot spots" can reach a distance from the Access Point radius of dozens of meters to 100 meters, users only need to take the laptop or PDA that Supports Wireless LAN to the area, you can access the Internet at high speed. That is to say, manufacturers do not have to spend money to connect to the network wiring, thus saving a lot of costs.

The speed of Wi-Fi varies according to the standard used by the wireless network adapter. The maximum value of IEEE802.11b is 11 Mbps. Some manufacturers can reach 22 Mbps in case of device matching), IEEE802.11a is 54 Mbps, and IEEE802.11g is 54 Mbps.

1. Understand Wi-Fi technology and its application in daily work
2. Consumer Electronics prefer 802.11n to eliminate other Wi-Fi technologies