A network exposure function (NEF) may include one or more processors and memory storing instructions that, when executed by the one or more processors, cause the NEF to perform a process. The process can include transmitting, to a session management function (SMF), a message that includes downlink data from an application server and for transmission to a wireless device and a release assistance indicator (RAI). The RAI can indicate transmission of uplink data by the wireless device is expected subsequent to transmission of the downlink data and a release of a connection associated with the wireless device after the transmission of the uplink data. The RAI can be configured to be included with a release message indicating release of a non-access stratum connection associated with the wireless device. The release message can include the RAI.