A method, equipment and system for policy control. The method includes: a trusted Wireless Local Area Network (WLAN) access gateway receiving Quality of Service (QoS) information from a 3GPP core network, and sending the QoS information to an Access Controller (AC) or a Broadband Network Gateway (BNG); the AC or the BNG or other fixed network access devices performing admission control and/or resource allocation according to the QoS information. In the technical solution, the interface configuration and policy configuration are performed for the WLAN access gateway in the fixed mobile convergence scenario, thereby the policy control is implemented in the fixed mobile convergence scenario.