Discovery and selection of UPF for uplink classifier

Abstract

A session management function receives, by from an access and mobility management function, a request for a packet data unit session for a wireless device. The session management function determines that the packet data unit session for the wireless device requires a user plane function that supports an uplink classifier functionality. The session management function sends a first message requesting a discovery of the user plane function to a network repository function based on the determining. The first message comprises an uplink classifier indication parameter. The session management function receives a second message comprising an identifier of the user plane function from the network repository function based on the first message. The session management function sends a third message to the user plane function. The third message request establishment of a connection between the session management function and the user plane function.

Dependencies are inferred from the claim text.