Performing Mobile Terminated Small Data Transmission (MT-SDT) in a Wireless Network

A method comprising:

• receiving, in an RRC_INACTIVE state, a paging message from a base station of a wireless network, the paging messaging comprising a Mobile Terminated Small Data Transmission (MT-SDT) indication;
• determining whether one or more conditions for exchanging data with the base station using MT-SDT are satisfied;
• and
• transmitting, in the RRC_INACTIVE state, an uplink (UL) response message to initiate the MT-SDT, based on a determination that the one or more conditions are satisfied.

An apparatus comprising one or more processors and one or more storage devices on which are stored instructions that are operable, when executed by the one or more processors, to cause the one or more processors to perform operations comprising:

• receiving, in an RRC_INACTIVE state, a Mobile Terminated Small Data Transmission (MT-SDT) paging message from a base station of a wireless network;
• determining whether one or more conditions for transferring data from the base station using MT-SDT have been configured;
• and
• performing at least one of:
• (i) upon determining that the one or more conditions have not been configured, transmitting an uplink (UL) response message to the base station indicating an initiation of MT-SDT, and receiving data from the base station using MT-SDT,
• (ii) upon determining that the one or more conditions have been configured and that the one or more configured conditions have been satisfied, transmitting the UL response message to the base station indicating the initiation of MT-SDT, and receiving data from the base station using MT-SDT, or
• (iii) upon determining that the one or more conditions have been configured and that at least one of the one or more configured conditions has not been satisfied, receiving data from the base station in an RRC_CONNECTED state.