Systems and methods on id swapping during data forwarding

A communication system comprising:

• at least one processor;
• and
• non-transient memory storing machine readable instructions which when executed by the least one processor implement a management function, a policy controller and a network function, said management function, policy controller and network function configured for:
• receiving, by the management function from the policy controller, a first message including a data forwarding policy indicative of a configuration on how to forward data according to a data forwarding requirement from an original data sender;
• sending, by the management function to the network function, a second message according to the first message;
• obtaining, by the network function, an indication indicating a request for data forwarding and a corresponding flag indicating an ID swapping rule according to the second message.

A method comprising:

• receiving, by a network function, a message including a data forwarding policy, the data forwarding policy indicative of a configuration on how to forward data according to a data forwarding requirement from an original data sender;
• determining, by the network function, an indication indicating a request for data forwarding and a corresponding flag indicating an ID swapping rule according to the data forwarding policy;
• and
• sending, by the network function to another network function, the indication and the corresponding flag;
• wherein the network function is trusted by the original data sender.

A method comprising:

• receiving, by a policy controller, a policy request to trigger the policy controller to generate a data forwarding policy, the policy request including a data forwarding requirement from an original data sender;
• generating, by the policy controller, the data forwarding policy after receiving the policy request;
• and
• sending, by the policy controller, a first message to a management function, the first message including the data forwarding policy indicative of a configuration on how to forward data according to the data forwarding requirement.