Hierarchical mobility
Techniques are described herein for signaling procedures that use a hierarchical mobility, which may be applied when a user equipment (UE) is operating in a radio resource control (RRC) inactive state or the RRC idle state. A wireless communication system may be configured with a plurality of areas in which one or more networks are established for communicating certain types of signals. Examples of the areas associated with networks may include a tracking area (TA), a radio access network area code (RAN-AC), a radio access network based notification area (RNA). A synchronization signal or a paging signal may be transmitted using a first set of communication resources in a first area, while the synchronization signal or the paging signal may be transmitted using a second set of communication resources in a second area different than the first set of communication resources.
1. A method for wireless communication, comprising:
identifying a radio resource control state of a user equipment from a set of states that includes a radio resource control inactive state and a radio resource control idle state;
identifying a single-frequency network area for communicating one or more network synchronization signals or one or more network paging signals based at least in part on the radio resource control state of the user equipment, wherein the one or more network synchronization signals or the one or more network paging signals are associated with the single-frequency network area; and
monitoring, by the user equipment, a set of communication resources for the one or more network synchronization signals or the one or more network paging signals associated with the single-frequency network area based at least in part on identifying the single-frequency network area, wherein the set of communication resources is identified based at least in part on an identifier of the single-frequency network area.
2. The method of claim 1 , further comprising:
receiving, by the user equipment, the one or more network synchronization signals or the one or more network paging signals associated with the single-frequency network area based at least in part on monitoring the set of communication resources for the one or more network synchronization signals or the one or more network paging signals.
3. The method of claim 1 , further comprising:
identifying one or more characteristics common to the one or more network synchronization signals or the one or more network paging signals communicated within the single-frequency network area, wherein monitoring the set of communication resources for the one or more network synchronization signals or the one or more network paging signals is based at least in part on identifying the one or more characteristics common to the one or more network synchronization signals or the one or more network paging signals.
4. The method of claim 1 , wherein identifying the single-frequency network area comprises:
identifying, based at least in part on the user equipment operating in the radio resource control inactive state or the radio resource control idle state, a radio access network area code defined by a network, wherein the one or more network synchronization signals or the one or more network paging signals are associated with the radio access network area code.
5. The method of claim 4 , wherein identifying the radio resource control state of the user equipment comprises:
identifying that the user equipment is operating in the radio resource control inactive state, wherein identifying the radio access network area code is based at least in part on identifying that the user equipment is operating in the radio resource control inactive state.
6. The method of claim 1 , wherein identifying the single-frequency network area comprises:
identifying, based at least in part on the user equipment operating in the radio resource control inactive state, a radio access network based notification area defined by the user equipment, wherein the one or more network synchronization signals or the one or more network paging signals are associated with the radio access network based notification area.
7. The method of claim 6 , wherein identifying the radio resource control state of the user equipment comprises:
identifying that the user equipment is operating in the radio resource control inactive state, wherein identifying the radio access network based notification area is based at least in part on identifying that the user equipment is operating in the radio resource control inactive state.
8. The method of claim 6 , wherein the radio access network based notification area comprises a plurality of radio access network area codes.
9. The method of claim 1 , wherein identifying the single-frequency network area comprises:
identifying, based at least in part on the user equipment operating in the radio resource control idle state, a tracking area defined by a network, wherein the one or more network synchronization signals or the one or more network paging signals are associated with the tracking area.
10. The method of claim 9 , wherein identifying the radio resource control state of the user equipment comprises:
identifying that the user equipment is operating in the radio resource control idle state, wherein identifying the tracking area is based at least in part on identifying that the user equipment is operating in the radio resource control idle state.
11. The method of claim 1 , further comprising:
receiving a network paging message based at least in part on monitoring the set of communication resources for the one or more network synchronization signals or the one or more network paging signals associated with the single-frequency network area; and
entering a radio resource control connected state based at least in part on receiving the network paging message.
12. The method of claim 1 , wherein identifying the radio resource control state further comprises:
entering, by the user equipment, the radio resource control inactive state or the radio resource control idle state.
13. The method of claim 1 , wherein the one or more network synchronization signals or the one or more network paging signals comprise a single-beam signal communicated over a millimeter wave network.
14. An apparatus for wireless communication, comprising:
a processor,
memory in electronic communication with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
identify a radio resource control state of a user equipment from a set of states that includes a radio resource control inactive state and a radio resource control idle state;
identify a single-frequency network area for communicating one or more network synchronization signals or one or more network paging signals based at least in part on the radio resource control state of the user equipment, wherein the one or more network synchronization signals or the one or more network paging signals are associated with the single-frequency network area; and
monitor a set of communication resources for the one or more network synchronization signals or the one or more network paging signals associated with the single-frequency network area based at least in part on identifying the single-frequency network area, wherein the set of communication resources is identified based at least in part on an identifier of the single-frequency network area.
15. The apparatus of claim 14 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, by the user equipment, the one or more network synchronization signals or the one or more network paging signals associated with the single-frequency network area based at least in part on monitoring the set of communication resources for the one or more network synchronization signals or the one or more network paging signals.
16. The apparatus of claim 14 , wherein the instructions are further executable by the processor to cause the apparatus to:
identify one or more characteristics common to the one or more network synchronization signals or the one or more network paging signals communicated within the single-frequency network area, wherein monitoring the set of communication resources for the one or more network synchronization signals or the one or more network paging signals is based at least in part on identifying the one or more characteristics common to the one or more network synchronization signals or the one or more network paging signals.