Construction method for data offloading system, network device, and storage medium

A method for constructing a data offloading system, applied to a session management function (SMF), the method comprising:

• acquiring a candidate service offloading rule sent by a policy control function (PCF);
• determining, according to a data network access identifier (DNAI), a target service offloading rule from the candidate service offloading rule;
• constructing a service detection rule according to the target service offloading rule;
• determining a target central user plane function (UPF) according to the target service offloading rule;
• generating an establishment request according to the service detection rule;
• sending the establishment request to the target central UPF, wherein the target central UPF is configured to identify a user equipment (UE) access packet according to the service detection rule, and in response to a detection result of the UE access packet satisfying a preset condition, cache the UE access packet and send an offloading instruction to the SMF;
• and
• constructing a UPF resource-based data offloading system according to the offloading instruction.