IEEE 802.11b indoor typical solution
Because of its convenience and scalability, IEEE 802.11b wireless LAN is especially suitable for small office environments and home networks. In the indoor environment, there can be different typical solutions for different situations.
1. Peer-to-peer solution Peer-to-peer solution is the simplest application solution, as long as each computer is installed with a wireless network card, you can access each other. If you need to connect to a wired network, you can install another wired network card for one of the computers. Other computers in the wireless network can use this computer as a gateway to access the wired network or shared printers and other devices. However, the peer-to-peer solution is a peer-to-peer solution. Computers on the network can only transfer information to each other one-to-one, and cannot perform multi-point access at the same time. If you want to realize the interworking function like wired LAN, you must use the access point.
2. Single access point solution An access point is equivalent to a hub in a wired network. The wireless access point can be connected to the surrounding wireless network terminals to form a star network structure. At the same time, it is connected to the wired network through the 10Base-T port, so that the terminals of the entire wireless network can access the resources of the wired network and the Internet through the router.
3. Multi-access point solution When the network scale is large and exceeds the coverage radius of a single access point, multiple access points can be used to connect to the wired network respectively, thereby forming a wireless wireless network with multiple access points. In the network, all wireless terminals can access the network through the nearest access point to access the resources of the entire network, thereby breaking through the limitation of the coverage radius of the wireless network.
4. Wireless relay solutions Wireless access points have another use, which is to act as an extension of the wired network. For example, in the factory workshop, the workshop has a network interface to connect the wired network, and many information points in the workshop are very far away, which makes the network wiring cost very high, and some information points cannot be wired because of the harsh surrounding environment. Since the distribution range of these information points exceeds the coverage radius of a single access point, we can use two access points to implement wireless relay to expand the coverage of the wireless network.
5. The wireless redundancy solution has an application environment that requires high network reliability, such as finance and securities. Once the access point fails, the entire wireless network will be paralyzed and will cause great losses. Therefore, the two access points can be placed at the same location, thereby implementing a wireless redundancy backup solution.
6. Multi-cellular roaming working mode When deploying a wireless network in a building or in a large plane, multiple access points can be arranged to form a set of microcellular systems, which is very similar to the microcellular system of mobile phones. The microcellular system allows a user to roam freely within the coverage area of ​​different access points. With the change of location, the signal will be automatically switched from one access point to another. The entire roaming process is transparent to the user. Although the access point providing the connection service is switched, the service to the user will not be interrupted.
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