The invention provides a method, a device and a
system for achieving
wireless local area network (WLAN) terminal end-to-end
quality of service (QoS) control. Permission
access control is not carried out to data flow, needed to be sent by an access class of a low priority, of a WLAN terminal, the WLAN terminal is born on a default bearer, permission
access control is carried out to data flow, needed to be sent by an access class of a high priority, of the WLAN terminal, whether the WLAN terminal is permitted to use the access class of the requested high priority to send or not is judged according to actual conditions of a WLAN and a long term evolution (LTE) network, if the WLAN terminal is permitted to use the access class of the requested high priority to send, the WLAN terminal is born on a bearer special for an evolved packet
system (EPS), and if the WLAN terminal is not permitted to use the access class of the requested high priority to send, the WLAN terminal is born on the default bearer. According to the device and the
system for achieving the WLAN terminal end-to-end QoS control, part of a
decision making function of QoS is shifted down to an LTE
wireless router, effective WLAN terminal permitting
access control and QoS decision-making can be carried out according to resource conditions of the WLAN and the LTE network, and the problem that WLAN terminal end-to-end cannot be well ensured in the prior art is avoided.