Policy control for redundant transmissions

A method performed by a policy control function (PCF), the method comprising:

• receiving a policy control request comprising a user equipment (UE) identifier that identifies a UE;
• after receiving the policy control request, obtaining from a data repository policy information associated with the UE, wherein the policy information includes a list of allowed services;
• determining whether any of the allowed services require redundant transmissions;
• for each one of the allowed services requiring redundant transmissions, deriving a pair of UE Route Selection Policy (URSP) rules;
• and
• storing the derived URSP rule pairs in the data repository in association with the UE identifier.

A core network (CN) node, the CN node comprising:

• processing circuitry;
• and
• a memory, the memory containing instructions executable by the processing circuitry, wherein the CN node is configured to perform a method comprising:
• receiving a session request message transmitted by a user equipment (UE), the session request message comprising a DNN and S-NSSAI pair;
• and
• after receiving the session request message, transmitting towards a policy control function (PCF) a policy create message that includes:
• i) the DNN and S-NSSAI pair from the session request message,
• ii) information indicating that a user plane for a PDU session for the DNN and S-NSSAI pair is redundancy capable, and/or
• iii) subscription information for the UE that indicates that the subscriber is allowed to have redundant transmissions.