Wireless network data transfer rate when buying

What is Wireless network data transfer rate?It means the ability of data transfer of Wireless network.Someone says it is the transfer speed,it is not very accurate.

Date transfers through wireless signal,but the natural environment will interfere with wireless signals more or less.The actual transfer rate of wireless LAN can only reach less than half of the nominal maximum transmission rate.

Such as wireless router 802.11b, the theoretical maximum rate is 11M, in good condition of wireless network environment, the transmission of a 100M file takes 3 minutes. In the same environment to transmission 100M file,a 802.11g wireless router only takes about 30 seconds.

So when you buy wireless routers (http://feilong.org/taobao-router), you need to consider the network transmission rate in your mind.

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