Capability configurations for new radio redcap devices
Various aspects of the present disclosure generally relate to configurations for new radio (NR) devices with reduced capabilities. In some aspects, a user equipment (UE) may determine a configuration from stored configuration information, where the configuration specifies a subset of features that NR UE with reduced capabilities is to support. The UE may communicate according to the configuration of reduced capabilities, or fall back to a set of further reduced UE capabilities. Numerous other aspects are provided.
1. A method of wireless communication performed by a New Radio (NR) user equipment (UE) with reduced capabilities, comprising:
determining a configuration from stored configuration information, wherein the configuration specifies a subset of features the NR UE is to support that includes:
a maximum bandwidth of 20 megahertz (MHz) of a first frequency range (FR1) licensed spectrum,
a maximum of one transmission antenna, and
a maximum of one reception antenna or a maximum of two reception antennas;
transmitting, based at least in part on determining the configuration and to a network node, a report including one or more information elements specifying the subset of features; and
communicating with the network node according to the configuration.
2. The method of claim 1 , further comprising:
receiving, from the network node, a request for the report.
3. The method of claim 1 , wherein the configuration specifies that the NR UE is to support a same numerology for one or more of synchronization signals, a physical broadcast channel, or control resource set zero (CORESET0) during initial access to a serving cell.
4. The method of claim 1 , wherein the configuration specifies that the NR UE is to support up to a maximum quantity of different numerologies for one or more of mobility measurement, cell selection, or cell re-selection.
5. The method of claim 1 , wherein the configuration specifies that the NR UE is to support one or more of a waveform or a modulation and coding scheme (MCS).
6. The method of claim 5 , wherein the configuration specifies that the NR UE is to support a low peak to average power ratio waveform on uplink for one or more of a physical uplink shared channel or a physical uplink control channel.
7. The method of claim 5 , wherein the configuration specifies that the NR UE is to support:
one or more of a 64 order quadrature amplitude modulation (QAM-64) MCS for downlink, and
a low spectral efficiency QAM-64 MCS for uplink, or a QAM-64 MCS for downlink and for uplink.
8. The method of claim 5 , wherein the configuration specifies that the NR UE is to support one or more of an MCS table or a channel quality indicator table associated with a relaxed modulation order for downlink and for uplink.
9. The method of claim 5 , wherein the configuration specifies that the NR UE is to support a subset of possible MCSs or channel quality indicators for downlink and for uplink.
10. The method of claim 9 , wherein a quantity of MCSs that the NR UE is to support for downlink is different than a quantity of MCSs or channel quality indicators that the NR UE is to support for uplink.
11. The method of claim 1 , wherein the configuration specifies that the NR UE is to support a reduction of bandwidth capability.
12. The method of claim 1 , wherein the subset of features includes the maximum of two reception antennas.
13. The method of claim 1 , wherein the subset of features corresponds to a type of NR UE with reduced capabilities, and wherein communicating according to the configuration includes communicating according to the configuration based at least in part on the type of NR UE.
14. The method of claim 13 , wherein the configuration specifies that the NR UE is to support a single design for synchronization signals and a physical broadcast channel for each of a plurality of types of NR UEs that include different capability levels.
15. The method of claim 13 , wherein the configuration specifies that the NR UE is to support;
one or more of a plurality of different coverage recovery (CR) levels, and
one or more of a quantity of repetitions, a quantity of aggregation levels, a quantity of frequency hops, or a density of demodulation reference signal symbols corresponding to different CR levels supported by one or more types of NR UEs.
16. The method of claim 13 , wherein the configuration specifies that the NR UE is to support an adaptable bandwidth for control resource set zero (CORESET0) and a bandwidth part configuration, based at least in part on a target coverage recovery (CR) level.
17. The method of claim 16 , wherein the bandwidth part configuration for CORESET0 specifies that a target CR level is mapped to one of 24 resource blocks (RBs), 48 RBs, or 96 RBs.
18. The method of claim 13 , wherein the configuration specifies that the NR UE is to support an adaptable time domain repetition level for one or more of a synchronization signal burst, a group common physical downlink control channel, a multicast or broadcast physical downlink shared channel, a positioning reference signal, a channel state information reference signal, a physical random access channel, a physical uplink shared channel, or a physical uplink control channel based at least in part on a target coverage recovery level.
19. The method of claim 13 , wherein the configuration specifies that the type of NR UE is to support a same power saving mode, a same set of processing capabilities and timeline, or a set of fallback capabilities as another type of NR UE.
20. The method of claim 1 , wherein the one or more information elements includes an indication of a half-duplex operation type.
21. A method of wireless communication performed by a network node, comprising:
receiving, from a New Radio (NR) user equipment (UE) with reduced capabilities, a report including one or more information elements specifying a subset of features of the NR UE that includes:
a maximum bandwidth of 20 megahertz (MHz) of a first frequency (FR1) licensed spectrum,
a maximum of one transmission antenna, and
a maximum of one reception antenna or a maximum of two reception antennas;
determining a configuration for the NR UE that specifies the subset of features; and
communicating with the NR UE according to the configuration.
22. The method of claim 21 , further comprising:
transmitting an indication of the configuration to the NR UE.
23. The method of claim 21 , wherein the configuration specifies that the NR UE is to support a same numerology for one or more of synchronization signals, a physical broadcast channel, or control resource set zero (CORESET0) during initial access to a serving cell.
24. The method of claim 21 , wherein the configuration specifies that the NR UE is to support up to a maximum quantity of different numerologies for one or more of mobility measurement, cell selection, or cell re-selection.
25. The method of claim 21 , wherein the configuration specifies that the NR UE is to support one or more of a modulation coding scheme table or a channel quality indicator table associated with a relaxed modulation order for downlink and for uplink.
26. The method of claim 21 , wherein the configuration specifies that the NR UE is to support:
one or more of a plurality of different coverage recovery (CR) levels, and
one or more of a quantity of repetitions, a quantity of aggregation levels, a quantity of frequency hops, or a density of demodulation reference signal symbols corresponding to different CR levels supported by one or more types of NR UEs.
27. An apparatus for wireless communication, comprising:
one or more processors; and
one or more memories coupled to the one or more memories, the one or more memories storing instructions executable by the one or more processors to cause the apparatus to:
determine a configuration from stored configuration information, wherein the configuration specifies a subset of features a New Radio (NR) user equipment (UE) with reduced capabilities is to support that includes:
a maximum bandwidth of 20 megahertz (MHz) of a first frequency range (FR1) licensed spectrum,
a maximum of one transmission antenna, and
a maximum of one reception antenna or a maximum of two reception antennas;
transmit, based at least in part on determining the configuration and to a network node, a report including one or more information elements specifying the subset of features; and
communicate with the network node according to the configuration.
28. An apparatus for wireless communication, comprising:
one or more processors; and
or more memories coupled to the one or more processors, the one or more memories storing instructions executable by the one or more processors to cause the apparatus to:
receiving, from a New Radio (NR) user equipment (UE) with reduced capabilities, a report including one or more information elements specifying a subset of features of the NR UE that includes:
a maximum bandwidth of 20 megahertz (MHz) of a first frequency (FR1) licensed spectrum,
a maximum of one transmission antenna, and
a maximum of one reception antenna or a maximum of two reception antennas; and
determine a configuration for the NR UE that specifies the subset of features; and
communicate with the UE according to the configuration.
29. The method of claim 1 , wherein the one or more information elements include an indication of a reduced radio resource management measurement.
30. The apparatus of claim 27 , wherein the maximum of one or two reception antennas is a maximum of two reception antennas.