Physical layer aspects for hierarchical mobility

An apparatus configured for wireless communication at a user equipment (UE), the apparatus comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor, wherein the at least one processor is configured:
• to operate in at least one of an idle state or a radio resource control (RRC) inactive stale of a discontinuous reception (DRX) mode;
• to identify, based at least in pan on the UE operating in the at least one of the idle slate or the RRC inactive state, a network comprising a plurality of cells corresponding to a portion of cells of an update area zone;
• to receive a network synchronization signal (SS) broadcast by the plurality of cells over the network;
• and
• to monitor for a network wake up signal (WUS) broadcast by the plurality of cells over the network.

A method for wireless communication at a base station, the method comprising:

• determining that the base station is a part of a network comprising a plurality of cells corresponding to a portion of cells of an update area zone configured for a user equipment (UE);
• determining whether there is a grant for paging;
• transmitting a network synchronization signal (SS) to the UE over the network;
• and
• transmitting a network wake up signal (WUS) over the network and a page in response to determining that there is a grant for paging.

An apparatus configured for wireless communication at a base station, the apparatus comprising;

• at least one processor;
• and
• a memory coupled to the at least one processor, wherein the at least one processor is configured:
• to determine that the base station is a part of a network comprising a plurality of cells corresponding to a portion of cells of an update area zone configured for a user equipment (UE);
• to determine whether there is a grant for paging:
• to transmit a network synchronization signal (SS) to the UE over the network;
• and
• to transmit a network wake up signal (WUS) over the network and a page in response to determining that there is a grant for paging.