Provided is a base station capable of suppressing increase of overhead of allocation result report in frequency scheduling in multi-carrier communication and obtaining a sufficient frequency diversity effect. In the base station, encoding units (101-1 to 101-n) encode data (#1 to #n) to mobile stations (#1 to #n), modulation units (102-1 to 102-n) modulate the encoded data so as to generate a data symbol, a scheduler (103) performs frequency scheduling according to a CQI from each mobile station so as to uniformly allocate data to the respective mobile stations for a part of RB extracted from a plurality of RB, and an SCCH generation unit (105) generates control information (SCCH information) to report the allocation result in the scheduler (103) to the respective mobile stations.

The present disclosure provides a method and a device in a User Equipment (UE) and a base station for multi-antenna transmission. A first node operates first downlink information. The first field of the first downlink information is used for determining a first radio resource, and the second field of the first downlink information is used for determining a second radio resource. The first radio resource is reserved for a first-type reference signal, and the second radio resource is reserved for a second-type reference signal. A target receiver of the first-type reference signal comprises the first node, a transmitter of the second-type reference signal is the first node. A measurement on the first-type reference signal is used for generating the second-type reference signal. The first node is a UE and the operating action is receiving; or the first node is a base station and the operating action is transmitting.

The present disclosure provides a method and a device in a User Equipment (UE) and a base station for multi-antenna transmission. A first node operates first downlink information. The first field of the first downlink information is used for determining a first radio resource, and the second field of the first downlink information is used for determining a second radio resource. The first radio resource is reserved for a first-type reference signal, and the second radio resource is reserved for a second-type reference signal. A target receiver of the first-type reference signal comprises the first node, a transmitter of the second-type reference signal is the first node. A measurement on the first-type reference signal is used for generating the second-type reference signal. The first node is a UE and the operating action is receiving; or the first node is a base station and the operating action is transmitting.

Certain aspects of the present disclosure provide techniques for configuring reference signals. A method that may be performed by a user equipment (UE) includes receiving a control message indicating a first quasi co-location (QCL) for an aperiodic-tracking reference signal (A-TRS), the A-TRS being associated with a periodic-tracking reference signal (P-TRS), determining a second QCL for the P-TRS based on the first QCL for the A-TRS, setting a receive beam for reception of the P-TRS based on the second QCL of the P-TRS, and decoding one or more frames based on channel statistics estimated via the P-TRS received via the receive beam.

Facilitating sparsity adaptive feedback in the delay doppler domain in advanced networks (e.g., 4G, 5G, 6G, and beyond) is provided herein. Operations of a method can comprise determining, by a first device comprising a processor, a channel covariance matrix in a time-frequency domain based on a channel estimation associated with reference signals received from a second device. The method also can comprise decomposing, by the first device, the channel covariance matrix into a group of component matrices. Further, the method can comprise transforming, by the first device, respective matrices of the group of component matrices into respective covariance matrices in a delay doppler domain. The method also can comprise determining, by the first device, channel state information feedback in the delay doppler domain.

Provided is a base station capable of suppressing increase of overhead of allocation result report in frequency scheduling in multi-carrier communication and obtaining a sufficient frequency diversity effect. In the base station, encoding units (101-1 to 101-n) encode data (#1 to #n) to mobile stations (#1 to #n), modulation units (102-1 to 102-n) modulate the encoded data so as to generate a data symbol, a scheduler (103) performs frequency scheduling according to a CQI from each mobile station so as to uniformly allocate data to the respective mobile stations for a part of RB extracted from a plurality of RB, and an SCCH generation unit (105) generates control information (SCCH information) to report the allocation result in the scheduler (103) to the respective mobile stations.

A method and an access network node are disclosed for beam control. According to an embodiment, the access network node determines first spatial domain information of a channel between a first terminal device and the access network node, based on second spatial domain information of the channel estimated by uplink signals received previously from the first terminal device at multiple time points. The access network node determines beamforming weights for the first terminal device based on the first spatial domain information.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, an indication of a demodulation reference signal bundling configuration to be used by the UE for demodulating a grant. The UE may bundle a plurality of demodulation reference signals received across a plurality of slots according to the demodulation reference signal bundling configuration. The UE may perform channel estimation based at least in part on the bundled demodulation reference signals. The UE may demodulate the grant based at least in part on the channel estimation.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a configuration for a time domain (TD) control channel element (CCE) bundle that includes at least one TD CCE for single carrier waveforms, wherein a phase continuity is assumed for a duration of the TD CCE bundle. The UE may perform a channel estimation using the TD CCE bundle based at least in part on the phase continuity for the duration of the TD CCE bundle. Numerous other aspects are described.

A user equipment (UE) transmits, to a base station, UE capability information that corresponds to a maximum number of configured pathloss reference signals and/or a maximum number of activated pathloss reference signals. Then, the base station configures the UE for a number of configured pathloss reference signals that is less than or equal to the maximum number of configured pathloss references signals and/or activates a number of pathloss reference signals based on the UE capability information that is less than or equal to the maximum number of activated pathloss references signals.