Method and apparatus for performing policy control on data packet

A local gateway, comprising a processor and a non-transitory readable medium having processor-executable instructions stored thereon arranged into modules, the modules comprising:

• a port range processing module, configured to allocate a port range to a user equipment (UE), where the port range is unique to the UE;
• send the port range of the UE and user information to a policy server, so that the policy server can make a policy rule for the UE, wherein the policy rule includes the port range;
• and
• a network address translation module, configured to perform network address translation on a packet sent by the UE to produce a translated packet having a source port in the port range, and send the translated packet to a network gateway in a fixed network, so that the network gateway can perform policy control on the packet according to the policy rule received from the policy server.