The invention relates to a 
wireless communication technology, and discloses a 
wireless communication method and 
system. Under the condition of 
network link congestion, the method and the 
system ensure that the 
data traffic of an important user is preferentially forwarded. The method comprises the steps of a, a 
wireless router providing a plurality of SSIDs (
Service Set Identifiers) to the outside, configuring different 
IP address pools for different SSIDs, and allocating different QoS (
Quality of Service) priorities for different 
IP address pools; b, a user terminal sending an access request to a certain SSID of the 
wireless router; c, the 
wireless router authenticating an 
authentication password sent by the user terminal according to the SSID requested to access by the user terminal, and allocating an 
IP address to the user terminal from the IP 
address pool corresponding to the SSID accessed by the user terminal after the 
authentication passes; d, the user terminal using the IP address allocated to the user terminal; d, the user terminal transceiving data by using the IP address allocated to the user terminal; and e, when the user terminal needs to forward data, the 
wireless router performing 
QoS scheduling according to the IP address allocated to the user terminal and the priority strategy.