Selection of an energy-saving cell for conditional handover
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, a configuration of one or more conditional handover conditions associated with a first candidate cell. The UE may receive an indication of an operating mode associated with the first candidate cell. The UE may perform a conditional handover procedure based at least in part on the configuration of the one or more conditional handover conditions and the indication of the operating mode associated with the first candidate cell. Numerous other aspects are described.
1 . An apparatus for wireless communication at a user equipment (UE), comprising:
a processor;
memory coupled to the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
receive, from a network entity, a configuration of one or more conditional handover conditions associated with a first candidate cell, wherein the configuration of the one or more conditional handover conditions comprises multiple handover condition thresholds associated with the first candidate cell, wherein each handover condition threshold is associated with a corresponding operating mode associated with the first candidate cell;
receive an indication of an operating mode associated with the first candidate cell; and
perform a conditional handover procedure based at least in part on the configuration of the one or more conditional handover conditions and the indication of the operating mode associated with the first candidate cell.
2 . The apparatus of claim 1 , wherein the indication of the operating mode associated with the first candidate cell includes an indication of whether the first candidate cell is operating in one of a non-energy-saving mode or an energy-saving mode.
3 . The apparatus of claim 1 , wherein the indication of the operating mode associated with the first candidate cell includes an indication of a selection priority value associated with the first candidate cell.
4 . The apparatus of claim 1 , wherein the one or more conditional handover conditions are associated with the operating mode of the first candidate cell.
5 . The apparatus of claim 4 , wherein the one or more conditional handover conditions are specific to the first candidate cell.
6 . The apparatus of claim 4 , wherein the one or more conditional handover conditions apply to at least one of multiple candidate cells operating in a corresponding operating mode, or multiple candidate cells operating in a corresponding frequency range.
7 . The apparatus of claim 1 , wherein a handover condition threshold, of the multiple handover condition thresholds, is selected by the UE based at least in part on availability of other candidate cells for the conditional handover procedure.
8 . The apparatus of claim 7 , wherein a first handover condition threshold is selected when at least one other candidate cell operating in a non-energy-saving mode is available for the conditional handover procedure, wherein a second handover condition threshold is selected when no other candidate cells operating in a non-energy-saving mode are available for the conditional handover procedure, and wherein the second handover condition threshold is less than the first handover condition threshold.
9 . The apparatus of claim 1 , wherein the configuration of the one or more conditional handover conditions associated with the first candidate cell includes a configuration of multiple handover condition thresholds, wherein the operating mode associated with the first candidate cell is permitted to change dynamically, and wherein the handover condition threshold is selected based at least in part on receiving the indication of the operating mode associated with the first candidate cell.
10 . The apparatus of claim 1 , wherein performing the conditional handover procedure is based at least in part on a comparison of a measurement of a first link between the UE and the first candidate cell to a measurement of a second link between the UE and a second candidate cell.
11 . The apparatus of claim 1 , wherein the configuration of the one or more conditional handover conditions associated with the first candidate cell includes a configuration of at least one handover condition threshold associated with the first candidate cell, and wherein the at least one handover condition threshold is associated with a measurement of a link between the UE and the first candidate cell.
12 . The apparatus of claim 1 , wherein the configuration of the one or more conditional handover conditions associated with the first candidate cell includes a configuration of at least one handover condition threshold associated with the first candidate cell, and wherein the at least one handover condition threshold is associated with a time-to-trigger a conditional event associated with the first candidate cell.
13 . The apparatus of claim 1 , wherein the configuration of the one or more conditional handover conditions associated with the first candidate cell is based at least in part on a frequency band associated with the first candidate cell.
14 . The apparatus of claim 1 , wherein the conditional handover procedure is associated with a conditional primary secondary cell group cell change.
15 . The apparatus of claim 1 , wherein the configuration of the one or more conditional handover conditions associated with the first candidate cell is received via a radio resource control (RRC) message, a system information block (SIB) message, or a medium access control (MAC) control element (MAC-CE) message.
16 . An apparatus for wireless communication at a network entity, comprising:
a processor;
memory coupled to the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
transmit, to a user equipment (UE), a configuration of one or more conditional handover conditions associated with a first candidate cell of a conditional handover procedure, wherein the configuration of the one or more conditional handover conditions comprises multiple handover condition thresholds associated with the first candidate cell, and wherein the configuration of the one or more conditional handover conditions is based at least in part on an operating mode associated with the first candidate cell, wherein each handover condition threshold is associated with a corresponding operating mode associated with the first candidate cell; and
transmit, to the UE, an indication of the operating mode associated with the first candidate cell.
17 . The apparatus of claim 16 , wherein the indication of the operating mode associated with the first candidate cell includes an indication of whether the first candidate cell is operating in one of a non-energy-saving mode or an energy-saving mode.
18 . The apparatus of claim 16 , wherein the indication of the operating mode associated with the first candidate cell includes an indication of a selection priority value associated with the first candidate cell.
19 . The apparatus of claim 16 , wherein the one or more conditional handover conditions are associated with the operating mode of the first candidate cell.
20 . The apparatus of claim 19 , wherein the one or more conditional handover conditions are specific to the first candidate cell.
21 . The apparatus of claim 19 , wherein the one or more conditional handover conditions apply to at least one of multiple candidate cells operating in a corresponding operating mode, or multiple candidate cells operating in a corresponding frequency range.
22 . The apparatus of claim 16 , and wherein a handover condition threshold, of the multiple handover condition thresholds, is selected based at least in part on availability of other candidate cells for the conditional handover procedure.
23 . The apparatus of claim 22 , wherein a first handover condition threshold is selected when at least one other candidate cell operating in a non-energy-saving mode is available for the conditional handover procedure, wherein a second handover condition threshold is selected when no other candidate cells operating in a non-energy-saving mode are available for the conditional handover procedure, and wherein the second handover condition threshold is less than the first handover condition threshold.
24 . The apparatus of claim 16 , wherein the operating mode associated with the first candidate cell is permitted to change dynamically, and wherein the handover condition threshold is selected based at least in part on the indication of the operating mode associated with the first candidate cell.
25 . The apparatus of claim 16 , wherein the configuration of the one or more conditional handover conditions associated with the first candidate cell includes a configuration of at least one handover condition threshold associated with the first candidate cell, and wherein the at least one handover condition threshold is associated with a measurement of a link between the UE and the first candidate cell.
26 . The apparatus of claim 16 , wherein the configuration of the one or more conditional handover conditions associated with the first candidate cell includes a configuration of at least one handover condition threshold associated with the first candidate cell, and wherein the at least one handover condition threshold is associated with a time-to-trigger a conditional event associated with the first candidate cell.
27 . A method of wireless communication performed by a user equipment (UE), comprising:
receiving, from a network entity, a configuration of one or more conditional handover conditions associated with a first candidate cell, wherein the configuration of the one or more conditional handover conditions comprises multiple handover condition thresholds associated with the first candidate cell, wherein each handover condition threshold is associated with a corresponding operating mode associated with the first candidate cell;
receiving an indication of an operating mode associated with the first candidate cell; and
performing a conditional handover procedure based at least in part on the configuration of the one or more conditional handover conditions and the indication of the operating mode associated with the first candidate cell.
28 . The method of claim 27 , wherein the indication of the operating mode associated with the first candidate cell includes an indication of whether the first candidate cell is operating in one of a non-energy-saving mode or an energy-saving mode.
29 . A method of wireless communication performed by a network entity, comprising:
transmitting, to a user equipment (UE), a configuration of one or more conditional handover conditions associated with a first candidate cell of a conditional handover procedure, wherein the configuration of the one or more conditional handover conditions comprises multiple handover condition thresholds associated with the first candidate cell, and wherein the configuration of the one or more conditional handover conditions is based at least in part on an operating mode associated with the first candidate cell, wherein each handover condition threshold is associated with a corresponding operating mode associated with the first candidate cell; and
transmitting, to the UE, an indication of the operating mode associated with the first candidate cell.
30 . The method of claim 29 , wherein the indication of the operating mode associated with the first candidate cell includes an indication of whether the first candidate cell is operating in one of a non-energy-saving mode or an energy-saving mode.