Local area network (LAN) as the world's recognized authority, the IEEE 802 standard working group established in the local area network in the field, in 1997, IEEE released the 802.11 protocol, this is the first internationally recognized in the field of wireless local area network (LAN) protocol, in September 1999, they have proposed the 802.11 b "High Rate" agreement, used to supplement, 802.11 protocol 802.11 b under 802.11 1 Mbps and 2 Mbps Rate increased 5.5 Mbps and 11 Mbps throughput Rate, two new network using 802.11 b, mobile users can get the same performance with the Ethernet cable, network throughput Rate, availability, 802.11 defines two types of equipment, is a wireless station, usually by a PC with a wireless network interface card, another is called a wireless Access Point (Access Point, AP), its role is to provide the bridge between wired and wireless network, a wireless Access Point usually consists of a wireless outlet and a cable network interface (802.3 interface), bridging software conforms to the 802.1 d bridging agreement, Access Point like a wireless base stations and wireless networks will stand aggregation of multiple wireless Access to the wired network, wireless terminal can be 02.11 PCMCIA card, PCI interface, the ISA interface, or on a computer terminal embedded devices (for example, 802.11 mobile phones),
Two sets of home wireless network scheme:
First plan: if the home is in accordance with the "easy to start a family LAN" described in the method to build the hub centered wired LAN, so might as well with the method of adding wireless AP will upgrade for LAN have wireless local area network (LAN) access function, while retaining the original function of wired LAN, this home can continue to use the original desktop Internet cable connection to the Internet, and notebook or inconvenience wiring way of desktop with a wireless access network, because wireless AP price is wireless router is cheap, so the upgrade package cost less, can maximum limit retained the original cable network equipment investment value,
Second plan: if the home LAN construction belongs to start from zero, so suggest directly buy wireless router to networking, wireless router itself the function of the built-in wireless AP, they are usually comes with 10 m/100 m adaptive network interface, also can make the cable and the gateway, so that you can easily construct a "double model family wired/wireless LAN", and most importantly, have a wireless router, you need not have a machine as a Shared server connected to the Internet network, wireless router itself has the function of the virtual server, after connecting the ADSL Modem dial it can realize automatic intelligent, very convenient, and save the installation Sysgate or Wingate trouble of this kind of software,

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The building Lord ever considered WIFI covers the floor and scope,