According to different application environments, the current wireless LAN adopts four types of topology: bridge-connected, access-node-connected, HUB-accessible, and non-centralized.
1, bridge connection type. This structure is mainly used for interconnection between wireless or wired LANs. When the two LANs cannot achieve a wired connection or there is a difficulty in using a wired connection, a bridge connection type can be used to realize a point-to-point connection. In this kind of structure, the communication between the LANs is realized through their own wireless bridges. The wireless bridges play a role in network routing and protocol conversion.
2, access node connection type. This kind of structure adopts the mobile cellular communication network to insert the way, the communication among each mobile station is to receive the information through the nearby wireless receiving station (access node: AP) first, and then the received information is transmitted through the wired network to " The mobile switching center" is then transmitted by the mobile switching center to all wireless receiving stations. At this point, the signal can be received anywhere within the network coverage and roaming communication can be achieved.
3, HUB access type. The use of HUB in a wired LAN can form a star network structure. Similarly, wireless APs can also be used to build a star-shaped wireless LAN, which works in a similar way to a wired star. However, it is generally required in a wireless LAN that the wireless AP should have a simple intranet switching function.
4, no central structure. The working principle of this structure is similar to that of a wired peer-to-peer network. It requires that any two sites in the network can directly exchange information. Each site is both a workstation and a server.
1, bridge connection type. This structure is mainly used for interconnection between wireless or wired LANs. When the two LANs cannot achieve a wired connection or there is a difficulty in using a wired connection, a bridge connection type can be used to realize a point-to-point connection. In this kind of structure, the communication between the LANs is realized through their own wireless bridges. The wireless bridges play a role in network routing and protocol conversion.
2, access node connection type. This kind of structure adopts the mobile cellular communication network to insert the way, the communication among each mobile station is to receive the information through the nearby wireless receiving station (access node: AP) first, and then the received information is transmitted through the wired network to " The mobile switching center" is then transmitted by the mobile switching center to all wireless receiving stations. At this point, the signal can be received anywhere within the network coverage and roaming communication can be achieved.
3, HUB access type. The use of HUB in a wired LAN can form a star network structure. Similarly, wireless APs can also be used to build a star-shaped wireless LAN, which works in a similar way to a wired star. However, it is generally required in a wireless LAN that the wireless AP should have a simple intranet switching function.
4, no central structure. The working principle of this structure is similar to that of a wired peer-to-peer network. It requires that any two sites in the network can directly exchange information. Each site is both a workstation and a server.
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