Method and apparatus for channel environment classification
UE capability for support of machine-learning (ML) based channel environment classification may be reported by a user equipment to a base station, where the channel environment classification classifies a channel environment of a channel between the UE and a base station based on one or more of UE speed or Doppler spread, UE trajectory, frequency selectivity or delay spread, coherence bandwidth, coherence time, radio resource management (RRM) metrics, block error rate, throughput, or UE acceleration. The user equipment may receive configuration for ML based channel environment classification, including at least enabling/disabling of ML based channel environment classification. When ML based channel environment classification is enabled, UE assistance information for ML based channel environment classification, and/or an indication of the channel environment (which may be a pre-defined channel environment associated with a lookup table), may be transmitted by the user equipment to the base station.
1 . A user equipment (UE), comprising:
a processor; and
a transceiver operatively coupled to the processor, the transceiver configured to
transmit a report of UE capability for support of machine-learning (ML) based channel environment classification based on Doppler spread and delay spread, wherein the channel environment classification classifies the Doppler spread and the delay spread for a channel environment of a channel between the UE and a base station based on one or more of UE speed, UE trajectory, frequency selectivity, coherence bandwidth, coherence time, radio resource management (RRM) metrics, block error rate, throughput, or UE acceleration, and
receive configuration for ML based channel environment classification based on Doppler spread and delay spread, the configuration for ML based channel environment classification based on Doppler spread and delay spread comprising at least enabling/disabling of ML based channel environment classification based on Doppler spread and delay spread,
wherein, when ML based channel environment classification based on Doppler spread and delay spread is enabled, the transceiver is configured to one of transmit UE assistance information for ML based channel environment classification based on Doppler spread and delay spread, or transmit an indication of the channel environment.
2 . The user equipment of claim 1 , wherein the indication of the channel environment is a pre-defined channel environment associated with a lookup table.
3 . The user equipment of claim 1 , wherein the configuration for ML based channel environment classification based on Doppler spread and delay spread further comprises one or more of a format for the indication, resources for the indication, periodicity of the indication, ML model to be used, updated ML model parameters, or whether model parameters received from the UE will be used.
4 . The user equipment of claim 1 , wherein the UE assistance information comprises one of
an indication of one or more of UE speed, frequency selectivity, channel coherence time, channel coherence bandwidth, UE trajectory, radio resource management (RRM) metrics, block error rate, throughput, or UE acceleration, or
an indication usable for performing model inference or includes model inference result if the UE performs model inference, wherein the model inference result further comprises one or more of an indication of a channel environment, a recommendation for a transmission mode, or a recommendation for handover by a base station (BS).
5 . The user equipment of claim 1 , wherein the UE assistance information comprises one of
periodic and triggered by UE-specific radio resource control (RRC) signaling, or
aperiodic or semi-persistent and triggered by a downlink control information (DCI).
6 . The user equipment of claim 1 , wherein the configuration for ML based channel environment classification based on Doppler spread and delay spread may be one of
broadcast as part of system information, or
transmitted via UE-specific signaling.
7 . The user equipment of claim 1 , wherein the configuration for ML based channel environment classification based on Doppler spread and delay spread includes enabling/disabling of channel environment-aware feedback, and wherein the transceiver is configured to transmit channel state information (CSI) reporting indicating channel environment when channel environment-aware feedback is enabled.
8 . A method performed by a user equipment (UE), comprising:
transmitting a report of UE capability for support of machine-learning (ML) based channel environment classification based on Doppler spread and delay spread, wherein the channel environment classification classifies the Doppler spread and the delay spread for a channel environment of a channel between the UE and a base station based on one or more of UE speed, UE trajectory, frequency selectivity, coherence bandwidth, coherence time, radio resource management (RRM) metrics, block error rate, throughput, or UE acceleration;
receiving configuration for ML based channel environment classification based on Doppler spread and delay spread, the configuration for ML based channel environment classification based on Doppler spread and delay spread comprising at least enabling/disabling of ML based channel environment classification based on Doppler spread and delay spread; and
when ML based channel environment classification based on Doppler spread and delay spread is enabled, one of transmitting UE assistance information for ML based channel environment classification based on Doppler spread and delay spread, or transmitting an indication of channel environment.
9 . The method of claim 8 , wherein the indication of channel environment is a pre-defined channel environment associated with a lookup table.
10 . The method of claim 8 , wherein the configuration for ML based channel environment classification based on Doppler spread and delay spread further comprises one or more of a format for the indication, resources for the indication, periodicity of the indication, ML model to be used, updated ML model parameters, or whether model parameters received from the UE will be used.
11 . The method of claim 8 , wherein the UE assistance information comprises one of
comprises an indication of one or more of UE speed, frequency selectivity, channel coherence time, channel coherence bandwidth, UE trajectory, radio resource management (RRM) metrics, block error rate, throughput, or UE acceleration, or
information usable for performing model inference or includes model inference result if the UE performs model inference, wherein the model inference result further comprises one or more of an indication of a channel environment, a recommendation for a transmission mode, or a recommendation for handover by a base station (BS).
12 . The method of claim 8 , wherein the UE assistance information comprises one of
periodic and triggered by UE-specific radio resource control (RRC) signaling, or
aperiodic or semi-persistent and triggered by a downlink control information (DCI).
13 . The method of claim 8 , wherein the configuration for ML based channel environment classification based on Doppler spread and Doppler delay may be one of
broadcast as part of system information, or
transmitted via UE-specific signaling.
14 . The method of claim 8 , wherein the configuration for ML based channel environment classification based on Doppler spread and delay spread includes enabling/disabling of channel environment-aware feedback, and wherein the method further comprises:
transmitting channel state information (CSI) reporting indicating channel environment when channel environment-aware feedback is enabled.