Common mode of wireless network application

constitute a special wireless network application mode, a group of computers connected to the wireless network card, you can connect with each other, resource sharing. At present, there are three kinds of equipments commonly used in home wireless network: Wireless network card, wireless AP (Access point, wireless Base station) and wireless router. Let me briefly explain what they are used for: a wireless network card is installed on a computer for wireless connections between computers or between computers and the AP and routers; wireless APs are used for signal amplification and communication between wireless networks and wired networks, and are similar to hubs or switches in a wired network; wireless routers are similar to broadband routers, In addition to the wireless network card can be used to connect, you can directly implement the wireless LAN Internet Connection Sharing. Here's a detailed description of the common wireless network mode one by one that these three types of devices are organized in.

Ad-hoc (point to point) mode:

In the establishment of a wireless LAN in the home, I think we all know that the simplest thing is to implement wireless interconnection between two computers with wireless cards installed, one of which is connected to the Internet to share bandwidth. As shown in the following figure, a wireless LAN based on the AD-HOC structure is completed. The AD-HOC structure is a PEER-TO-PEER network structure which eliminates the wireless AP, so long as the computer installed the wireless network card can realize the wireless interconnection between each other; the principle is that a computer host in the network establishes a point-to-point connection equivalent to a virtual AP, and other computers can directly through this point-to-point connection for network interconnection and sharing.

As a result of eliminating wireless Ap,ad-hoc Wireless LAN network erection process is very simple, but the general wireless network card in the indoor environment transmission distance is usually about 40m, when more than this effective transmission distance, can not achieve communication between each other So this model is ideal for some simple, even temporary, wireless interconnection requirements. In addition, if you want to share the bandwidth of the connection between all the computers in the scenario, such as having 4 machines sharing broadband at the same time, the available bandwidth for each machine is only 1/3 of the standard bandwidth.

Wireless ap+ Wireless Card mode:

Wireless ap+ Wireless Card mode is the most economical and practical type in the three scenarios I am introducing today.

AP is the abbreviation of Access point, wireless APs are wireless LAN access points, wireless gateway, it is similar to the role of the hub in the wired network. When an AP is present in the network, the wireless network card will be twice times the same coverage, and it can also increase the network equipment that the wireless LAN accommodates. Wireless AP to join, then enrich the way the network, we first look at the basic structure of this model schematic diagram bar.

As shown above, because of the development of technology now AP is no longer a simple link between "wired" and "wireless", the market has a variety of additional features of AP products, which gives the current wide range of home broadband access mode provides strong support. Now on the market some wireless AP also has proxy server function, with the help of ADSL or cable modem connection, to achieve Internet access sharing, of course, the price of these products is also more expensive.

For a wireless LAN with AP access points, configure the AP and its IP address before setting up a wireless LAN client to connect to the wireless AP and add it to the appropriate AP network. Access point Wireless LAN can also access the existing LAN via the Ethernet interface on the AP to realize the integration of wireless and wired.

Wireless Broadband router + wireless network card mode:

"Wireless Broadband router + wireless network card" mode is now a lot of families are using wireless network mode; see the following figure this mode of wireless networks can be a wired + wireless broadband hybrid network. While wireless networks are free, there are times when the signal is not very good, and the cable network advantage of this mode emerges.

In addition, for users who use virtual dial-up software to surf the internet, they no longer need to use a computer as a gateway for virtual dialing, and now they can surf the internet and stay online forever. This mode and the above "Wireless ap+ Wireless card" mode compared to the cost of investment increased by about 30%, if the economy allows, I recommend that you adopt this model.

For ADSL new users I recommend that before starting the installation of the best to determine whether the broadband service has been opened (this can call the ISP to know, here to remind you that the ISP's technical support phone is best to keep good, in the future will often need to use), and then inventory the wireless broadband router, network cable The wireless card and its drive CD-ROM are complete. Especially notice whether the crystal head of the wire is pinched correctly. If you're ready to upgrade on a previous wired network, then of course you don't have to work on the front.