Techniques for band priority utilization for cell scanning
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may obtain a band priority list identifying a set of bands in a prioritized order. The UE may perform a system scan of one or more bands of a frequency list that are associated with at least a threshold energy level in the prioritized order of the one or more bands in the band priority list. Numerous other aspects are described.
1 . A method of wireless communication performed by a user equipment (UE), comprising:
determining, for a set of bands of a band priority list, an order for scanning the set of bands based at least in part on each band of the set of bands satisfying a criterion;
scanning the set of bands using the order for scanning the set of bands;
detecting a radio link failure;
adjusting an energy threshold based at least in part on detecting the radio link failure; and
acquiring a cell based at least in part on scanning the set of bands and based at least in part on an energy level of the cell satisfying the energy threshold.
2 . The method of claim 1 ,
wherein scanning the set of bands comprises performing at least one of a band scan or a system scan.
3 . The method of claim 1 ,
wherein at least one band, of the set of bands, is not associated with a priority; and
wherein the determination of the order for scanning the set of bands comprises:
determining a position of the at least one band within the order for scanning the set of bands based at least in part on an energy level.
4 . The method of claim 1 ,
wherein the determination of the order for scanning the set of bands comprises:
determining the order for scanning the set of bands based at least in part on a set of energy levels of the set of bands.
5 . The method of claim 1 , further comprising:
reselecting to a cell based at least in part on scanning the set of bands.
6 . The method of claim 5 ,
wherein the cell is an anchor cell.
7 . The method of claim 1 , further comprising:
determining the energy threshold based at least in part on:
a stored value,
a call flow scenario,
a coverage metric,
a minimum value,
a maximum value,
a connection event, or
an increment value.
8 . The method of claim 1 , further comprising:
determining a new order for scanning a subset of the set of bands based at least in part on respective energy levels of the subset of the set of bands.
9 . The method of claim 1 ,
wherein the determination of the order for scanning the set of bands comprises:
determining the order for scanning the set of bands based at least in part on a set of timestamps of the set of bands.
10 . The method of claim 1 ,
wherein the determination of the order for scanning the set of bands comprises:
determining a prioritization of a set of acquisition candidates based at least in part on a set of absolute priority levels for the set of bands.
11 . The method of claim 1 , further comprising:
receiving information identifying the band priority list.
12 . The method of claim 1 ,
wherein the band priority list is dynamically configured based at least in part one or more network measurements.
13 . The method of claim 1 ,
wherein the band priority list is based at least in part on:
an E-UTRA New Radio Dual Connectivity (ENDC) capability,
a throughput capability, or
a band range capability.
14 . The method of claim 1 ,
wherein the criterion corresponds to a threshold energy level, a threshold level of congestion, a threshold reference signal received power (RSRP), a threshold reference signal received quality (RSRQ), a threshold signal to interference and noise ratio (SINR), or a threshold block error rate (BLER).
15 . A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors operatively coupled to the memory, the memory and the one or more processors configured to:
determine, for a set of bands of a band priority list, an order for scanning the set of bands based at least in part on each band of the set of bands satisfying a criterion;
scan the set of bands using the order for scanning the set of bands;
detect a radio link failure;
adjust an energy threshold based at least in part on detecting the radio link failure; and
acquire a cell based at least in part on scanning the set of bands and based at least in part on an energy level of the cell satisfying the energy threshold.
16 . The UE of claim 15 ,
wherein the one or more processors, when scanning the set of bands, are configured to perform a band scan or a system scan.
17 . The UE of claim 15 ,
wherein at least one band, of the set of bands, is not associated with a priority; and
wherein the determination of the order for scanning the set of bands comprises:
determine a position of the at least one band within the order for scanning the set of bands based at least in part on an energy level.
18 . The UE of claim 15 ,
wherein the determination of the order for scanning the set of bands comprises:
determine the order for scanning the set of bands based at least in part on a set of energy levels of the set of bands.
19 . The UE of claim 15 ,
wherein the one or more processors are further configured to:
reselect to a cell based at least in part on scanning the set of bands.
20 . The UE of claim 19 ,
wherein the cell is an anchor cell.
21 . The UE of claim 15 ,
wherein the one or more processors are further configured to:
determine the energy threshold based at least in part on:
a stored value,
a call flow scenario,
a coverage metric,
a minimum value,
a maximum value,
a connection event, or
an increment value.
22 . The UE of claim 15 ,
wherein the one or more processors are further configured to:
determine a new order for scanning a subset of the set of bands based at least in part on respective energy levels of the subset of the set of bands.
23 . The UE of claim 15 ,
wherein the determination of the order for scanning the set of bands comprises:
determine the order for scanning the set of bands based at least in part on a set of timestamps of the set of bands.
24 . The UE of claim 15 ,
wherein the determination of the order for scanning the set of bands comprises:
determine a prioritization of a set of acquisition candidates based at least in part on a set of absolute priority levels for the set of bands.
25 . The UE of claim 15 ,
wherein the one or more processors are further configured to:
receive information identifying the band priority list.
26 . The UE of claim 15 ,
wherein the band priority list is dynamically configured based at least in part one or more network measurements.
27 . The UE of claim 15 ,
wherein the band priority list is based at least in part on:
an New Radio Dual Connectivity (ENDC) capability,
or
a band range capability.
28 . The UE of claim 15 ,
wherein the criterion corresponds to a threshold energy level, a threshold level of congestion, a threshold reference signal received power (RSRP), a threshold reference signal received quality (RSRQ), a threshold signal to interference and noise ratio (SINR), or a threshold block error rate (BLER).
29 . A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to:
determine, for a set of bands of a band priority list, an order for scanning the set of bands based at least in part on each band of the set of bands satisfying a criterion;
scan the set of bands using the order for scanning the set of bands;
detect a radio link failure;
adjust an energy threshold based at least in part on detecting the radio link failure; and
acquire a cell based at least in part on scanning the set of bands and based at least in part on an energy level of the cell satisfying the energy threshold.
30 . The non-transitory computer-readable medium of claim 29 ,
wherein the one or more instructions, that cause the UE to scan the set of bands, cause the UE to perform a band scan or a system scan.
31 . The non-transitory computer-readable medium of claim 29 ,
wherein at least one band, of the set of bands, is not associated with a priority; and
wherein the one or more instructions, to cause the UE to determine the order for scanning the set of bands, cause the UE to:
determine a position of the at least one band within the order for scanning the set of bands based at least in part on an energy level.
32 . The non-transitory computer-readable medium of claim 29 ,
wherein the one or more instructions, to cause the UE to determine the order for scanning the set of bands, cause the UE to:
determine the order for scanning the set of bands based at least in part on a set of energy levels of the set of bands.
33 . The non-transitory computer-readable medium of claim 29 ,
wherein the one or more instructions cause the UE to:
reselect to a cell based at least in part on scanning the set of bands.
34 . The non-transitory computer-readable medium of claim 33 ,
wherein the cell is an anchor cell.
35 . An apparatus for wireless communication, comprising:
means for determining, for a set of bands of a band priority list, an order for scanning the set of bands based at least in part on each band of the set of bands satisfying a criterion;
means for scanning the set of bands using the order for scanning the set of bands;
means for detecting a radio link failure;
means for adjusting an energy threshold based at least in part on detecting the radio link failure; and
means for acquiring a cell based at least in part on scanning the set of bands and based at least in part on an energy level of the cell satisfying the energy threshold.