NR user equipment (UE) power savings reporting and configuration
Embodiments include methods, performed by a user equipment (UE), for reporting UE energy consumption information to a network node in a radio access network (RAN). Such methods include acquiring a set of candidate configurations related to UE operation in the RAN and determining UE energy consumption information related to the set. The UE energy consumption information can include respective energy consumption metrics associated with the candidate configurations, and/or a relative priority of the candidate configurations with regards to UE energy consumption reduction. Such methods also include reporting at least a portion of the UE energy consumption information to the network node. Other embodiments include complementary methods, performed by a network node, that include selecting a particular candidate configuration, for the UE, based on the reported UE energy consumption information, and scheduling the UE for operation in the RAN according to the selected configuration.
1 . A method, performed by a network node, for scheduling user equipment (UEs) in a radio access network (RAN) based on UE energy consumption information, the method comprising:
sending, to a UE, a set of candidate configurations that are selected from a plurality of configurations supported by the UE;
receiving, from the UE, UE energy consumption information related to the set, including at least one of the following:
respective energy consumption metrics associated with one or more of the candidate configurations, and
a relative priority of the candidate configurations with regards to UE energy consumption reduction;
selecting one of the candidate configurations based on the UE energy consumption information, wherein the selected candidate configuration includes a physical downlink control channel (PDCCH) configuration and one of the following:
a physical downlink shared channel (PDSCH) configuration, or
a physical uplink shared channel (PUSCH) configuration; and
sending a scheduling message to the UE via a PDCCH in accordance with the PDCCH configuration of the selected candidate configuration, wherein the scheduling message indicates one of the following:
PDSCH resources in accordance with the PDSCH configuration of the selected candidate configuration, or
PUSCH resources in accordance with the PUSCH configuration of the selected candidate configuration.
2 . The method of claim 1 , wherein the set of candidate configurations includes a reference traffic type that is common to all candidate configurations in the set.
3 . The method of claim 1 , further comprising receiving, from the UE, an indication of the plurality of configurations supported by the UE.
4 . The method of claim 3 , wherein the plurality of configurations supported by the UE are indicated as one or more discrete levels of support for energy consumption reduction.
5 . The method of claim 4 , wherein:
each configuration supported by the UE includes a plurality of parameters or settings related to UE operation in the RAN; and
a discrete level of support for energy consumption reduction is indicated separately for each of the parameters or settings.
6 . The method of claim 1 , wherein each candidate configuration includes one or more of the following:
PDCCH configuration,
PDSCH configuration,
PUSCH configuration,
hybrid ARQ (HARQ) configuration,
minimum required processing times between UE operations,
discontinuous reception (DRX) configuration,
antenna or spatial configuration, and
frequency-domain configuration.
7 . The method of claim 1 , further comprising sending, to the UE, one or more reporting requirements related to the UE energy consumption information.
8 . The method of claim 1 , wherein selecting one of the candidate configurations is also based on at least one of the following:
UE energy consumption information received from other UEs,
current resource scheduling status, and
known or expected upcoming resource scheduling requirements.
9 . The method of claim 1 , wherein the selected candidate configuration is one of the following:
the candidate configuration whose associated energy consumption metric is best among the energy consumption metrics received from the UE;
the candidate configuration whose relative priority is highest.
10 . The method of claim 1 , wherein selecting one of the candidate configurations comprises:
separating the set of candidate configurations into first and second subsets based on a threshold, wherein:
all candidate configurations of the first subset have an energy consumption metric or a relative priority that is better than the threshold, and
all candidate configurations of the second subset have an energy consumption metric or a relative priority that is worse than the threshold; and
selecting, from either the first or second subset, a candidate configuration that is preferred for network resource scheduling.
11 . The method of claim 1 , wherein the respective energy consumption metrics are received as:
a first metric for a first candidate configuration of the set; and
differential metrics, relative to the first metric, for one or more other candidate configurations of the set.
12 . A non-transitory, computer-readable medium storing computer-executable instructions that, when executed by processing circuitry of a network node of a radio access network (RAN), configure the network node to perform operations corresponding to the method of claim 1 .
13 . A network node configured to schedule user equipment (UEs) in a radio access network (RAN) based on UE energy consumption information, the network node comprising:
radio network interface circuitry configured to communicate with one or more UEs; and
processing circuitry operatively coupled with the radio network interface circuitry, whereby the processing circuitry and the radio network interface circuitry are configured to:
send, to a UE, a set of candidate configurations that are selected from a plurality of configurations supported by the UE;
receive, from the UE, UE energy consumption information related to the set, including at least one of the following:
respective energy consumption metrics associated with one or more of the candidate configurations, and
a relative priority of the candidate configurations with regards to UE energy consumption reduction;
select one of the candidate configurations based on the UE energy consumption information, wherein the selected candidate configuration includes a physical downlink control channel (PDCCH) configuration and one of the following:
a physical downlink shared channel (PDSCH) configuration, or
a physical uplink shared channel (PUSCH) configuration; and
send a scheduling message to the UE via a PDCCH in accordance with the PDCCH configuration of the selected candidate configuration, wherein the scheduling message indicates one of the following:
PDSCH resources in accordance with the PDSCH configuration of the selected candidate configuration, or
PUSCH resources in accordance with the PUSCH configuration of the selected candidate configuration.
14 . The network node of claim 13 , wherein the set of candidate configurations includes a reference traffic type that is common to all candidate configurations in the set.
15 . The network node of claim 13 , wherein the processing circuitry and the radio network interface circuitry are further configured to receive, from the UE, an indication of the plurality of configurations supported by the UE, wherein the plurality of configurations supported by the UE are indicated as one or more discrete levels of support for energy consumption reduction.
16 . The network node of claim 15 , wherein:
each configuration supported by the UE includes a plurality of parameters or settings related to UE operation in the RAN; and
a discrete level of support for energy consumption reduction is indicated separately for each of the parameters or settings.
17 . The network node of claim 13 , wherein each candidate configuration includes one or more of the following:
PDCCH configuration,
PDSCH configuration,
PUSCH configuration,
hybrid ARQ (HARQ) configuration,
minimum required processing times between UE operations,
discontinuous reception (DRX) configuration,
antenna or spatial configuration, and
frequency-domain configuration.
18 . The network node of claim 13 , wherein the processing circuitry and the radio network interface circuitry are configured to select one of the candidate configurations also based on at least one of the following:
UE energy consumption information received from other UEs,
current resource scheduling status, and
known or expected upcoming resource scheduling requirements.
19 . The network node of claim 13 , wherein the selected candidate configuration is one of the following:
the candidate configuration whose associated energy consumption metric is best among the energy consumption metrics received from the UE;
the candidate configuration whose relative priority is highest.
20 . The network node of claim 13 , wherein the processing circuitry and the radio network interface circuitry are configured to select one of the candidate configurations based on:
separating the set of candidate configurations into first and second subsets based on a threshold, wherein:
all candidate configurations of the first subset have an energy consumption metric or a relative priority that is better than the threshold, and
all candidate configurations of the second subset have an energy consumption metric or a relative priority that is worse than the threshold; and
selecting, from either the first or second subset, a candidate configuration that is preferred for network resource scheduling.