Method and apparatus for adaptive wtru reachability in a wireless network

A network node in a wireless network, the network node comprising:

• a transceiver, and
• a processor,
• wherein the transceiver and the processor are configured to receive a first message, from a wireless transmit/receive unit (WTRU) connected to the wireless network, wherein the first message comprises information indicating that the WTRU will not monitor a paging channel of the wireless network when the WTRU is in an idle state, and
• wherein the transceiver and the processor are further configured to send a second message, to the WTRU, wherein the second message comprises information indicating a reachability strategy for the WTRU, wherein the reachability strategy comprises paging the WTRU via an alternate source when the WTRU is in the idle state.

The network node of 10, wherein the processor and the transceiver are further configured to determine the reachability strategy by:

• determining that data analytics services are to be used to assist in determining the reachability strategy, and
• obtaining data analytics services provided by at least one of:
• a network data and analytics function (NWDAF) of the cellular network,
• an application data analytics and enablement service (ADAES), or
• an artificial intelligence/machine learning enablement (AI/MLE) layer.

A method, implemented in a wireless transmit/receive unit (WTRU), the method comprising:

• connecting to a wireless network;
• sending a first message, via the wireless network, wherein the first message comprises information indicating that the WTRU will not monitor a paging channel of the wireless network when the WTRU is in an idle state;
• and
• receiving a second message, via the wireless network, wherein the second message comprises information indicating a reachability strategy for the WTRU, wherein the reachability strategy comprises paging the WTRU via an alternate source when the WTRU is in the idle state.