Method for service chain policy formulation and device

摘要

Embodiments presented herein provide a method, including: receiving, by a policy and charging rules function unit (PCRF) by using a service capability exposure function unit (SCEF), a message sent by an application server (AS). The message is used to request to formulate a service chain policy for a service flow of user equipment (UE), and includes a service chain requirement of the service flow. The method further includes formulating, by the PCRF, the service chain policy for the service flow according to the service chain requirement included in the first message. The service chain policy includes a service chain function provided to the service flow. When a user needs to implement a service, the PCRF formulates, according to a message sent by the AS that includes a requirement of a service flow corresponding to the service, a service chain policy that is suitable for the service flow.