Methods, systems, and devices for wireless communications are described that provide for receive chain selection at a user equipment (UE) with efficient switching between a reduced number of receive chains and an increased number of receive chains for downlink communications based on conditions at the UE. A UE may adaptively adjust the number of active receive chains based on downlink grant activity, channel conditions, network parameters, or any combinations thereof. An estimator block at the UE may determine to adjust the number of receive chains based on a number of downlink grants within one or more time periods. In some cases, grants for an amount of data that exceeds a threshold may be qualified in order to be counted at the estimation block. Further, a transient state may be provided where the UE may maintain a higher number of active receive chains until UE feedback is provided.

A wireless network may include a PCELL base station, an SCELL base station, and user equipment (UE) that communicate using standalone carrier aggregation. The UE may receive PCELL signals during first measurement periods, may perform first measurements on the PCELL signals, may receive SCELL signals during second measurement periods, and may perform second measurements on the SCELL signals. When a scheduled reporting time approaches, the UE may compare a duration between a most recent of the second measurement periods and the reporting time to a threshold. If the duration is less than the threshold, the UE may include the most recent second measurement in a measurement report transmitted at the scheduled reporting time. When the duration exceeds the threshold, the receiver may perform a third measurement on the SCELL signals during an unscheduled period prior to the reporting time and may include the third measurement in the measurement report.

Embodiments of the present disclosure provide a secondary node change method, a terminal device, and a network device. The network device can timely know that measurement results of the terminal device meet the secondary node change condition, thereby improving the performance of secondary node change. The secondary node change method includes: receiving, by a master node, first indication information indicating that a secondary node change condition has been met or that a secondary node change process has been initiated by a terminal device; and transmitting, by the master node in response to the first indication information, second indication information to a source secondary node, the second indication information instructing the source secondary node to release a connection towards the terminal device, and/or instructing the source secondary node to terminate data transmission towards the terminal device.

A RAN node for communicating with a UE, which is configured to receive unicast information from a RAN, receives (1502) an indication that the UE is attempting to receive MBS, and transmits (1504), to another RAN node, a message that (i) notifies the second node of a first reconfiguration of the UE at the first node, or (ii) causes, at the second node, a second reconfiguration of the UE to receive the unicast information and MBS.

The disclosure relates to a 5.sup.th generation (5G) or 6.sup.th generation (6G) communication system for supporting a higher data transmission rate. A method and an apparatus for conditional primary secondary cell group (SCG) (PS)cell change in a next generation mobile communication system are provided. According to an embodiment of the disclosure, a method performed by a user equipment (UE) in a wireless communication system is provided. The method includes receiving radio resource control (RRC) reconfiguration message including conditional reconfiguration information, performing a conditional reconfiguration procedure based on first variable related to the MN, and performing the conditional reconfiguration procedure based on second variable related to the SN.

The present application discloses a method and a device in a node for wireless communications. A first node receives a first reference signal group to determine a first-type received quality group; maintains a second counter according to the first-type received quality group; and transmits a first signal. The first signal indicates a first reference signal; when a first counter is no larger than a first threshold, the first reference signal belongs to a first reference signal subset; when the first counter is larger than the first threshold, the first reference signal belongs to a second reference signal subset; a reference signal in the second reference signal subset does not belong to the first reference signal subset; as a response to a first condition set being satisfied, the first signal is triggered. The method above achieves rapid cross-cell beam switch, thus guaranteeing the service quality and avoiding ping-pong effect.

In an embodiment, a method for selecting a frequency combination for a User Equipment (UE), is disclosed. The method includes determining, by the UE, at least one of a bandwidth or multiple-input multiple-output (MIMO) layer information associated with each of a plurality of cells upon detecting the plurality of cells present in a network. The method includes identifying, by the UE, at least one combination of cells amongst the plurality of cells providing a maximum throughput based on the determined bandwidth and the MIMO layer information associated with each of the plurality of cells. The method further includes latching, by the UE, onto the combination of cells with the maximum throughput.

The present document discloses a method by which a terminal transmits/receives data in a wireless communication system, comprising the steps of: transmitting capability information to a serving base station; receiving a reference signal (RS) from the serving base station; and transmitting downlink (DL) channel measurement information on the basis of the RS, wherein the capability information includes information about a duplex mode supported by the terminal and information about the range in which the terminal can communicate in a full-duplex (FD) mode, the DL channel measurement information includes DL signal to interference plus noise ratio (SINR) information about each of the serving base station and one or more neighboring base stations, and the one or more neighboring base stations can perform a coordinated multi-point (CoMP) operation with the serving base station.

Certain aspects of the present disclosure provide techniques for priority based stand-alone and carrier aggregated frequency band usage. An example method that may be performed by a user equipment (UE) includes: maintaining a high-priority list (HPL) and a low-priority list (LPL) of frequency bands and combinations of frequency bands that are supported by the UE, wherein the HPL and the LPL are based on one or more hardware (HW) components of the UE; and taking one or more actions based on one or more measured parameters of the frequency bands or the combinations of frequency bands and at least one of the HPL and the LPL.

Methods, systems, apparatuses, and computer programs for enhancing UE handover. In one aspect, the method can include obtaining a request for a handover event from a UE, wherein the request includes at least (i) a request for access to a primary cell group and (ii) data indicating capabilities of the UE, determining, based on the UE capabilities, that the UE is capable of maintaining communication with a secondary cell group of a base station during handover of the UE to the primary cell group of the first base station, generating based on the determined UE capability, a handover command that instructs the UE to maintain communication with the secondary cell group of the base station during handover of the UE to the primary cell group, encoding the generated handover command for transmission to the UE, and transmitting the generated handover command to the UE.