A UE may receive, from a base station, information indicating a set of beams associated with a plurality of CCs. The UE may be configured to activate the set of beams on the plurality of CCs either for a single TRP or for multiple TRPs, with the set of beams being activated for the single TRP when less than two beam IDs respectively associated with the set of beams are mapped to a codepoint and less than two pool indexes are configured for a CORESET associated with at least one CC of the plurality of CCs. The set of beams may be activated for the multiple TRPs when at least one of: the codepoint is mapped to two or more beam IDs, or the CORESET either is configured with two or more pool indexes or is not configured with a pool index.

A communication system includes a base station including a plurality of antennas that separate from each other and a mobile station. The base station maps a plurality of reference signals separable from each other onto the antennas to transmit the mapped reference signals. The mobile station determines, using the received reference signals, reception quality in consideration of gain of beam-forming transmission performed by the base station with the antennas, and notifies the base station of the determined reception quality.

Discloses is a method in which a user equipment (UE) reports channel state information to an evolved Node B (eNB) for beamforming based on multiple antennas in a wireless communication system. Specifically, the method comprises the steps of: receiving information on a plurality of reference signal resources from the eNB; generating channel state information containing information related to one preferred precoder to be applied to the plurality of reference signal resources in common and information related to one linking precoder for connecting the plurality of reference signal resources; and reporting the channel state information to the eNB, wherein the multiple antennas are partitioned into sections of row or column units and the plurality of reference signal resources correspond to the sections.

A method for receiving a reference signal for position determination in a wireless communication system according to one embodiment of the present invention may comprise the steps of: receiving configuration information regarding a positioning reference signal (PRS), the method thereof being performed by user equipment (UE) and that is transmitted from a plurality of antenna ports, wherein the PRS related configuration information includes information regarding a beam direction applied to the PRS; measuring each PRS group to which the same beam direction related information is applied; and reporting the measurement results of the respective PRS group to a serving base station.

Embodiments herein relate to a method performed by a first radio network node for enabling a mobility procedure of a wireless device between the first radio network node and a second radio network node in a wireless communication network. The first radio network node transmits a first indication to the second radio network node, which first indication indicates a position of the wireless device. The first radio network node further receives a second indication from the second radio network node, which second indication indicates one or more beams used at the second radio network node. The first radio network node sends to the wireless device measurement information indicating the one or more beams to perform measurement on and thereby enabling the mobility procedure.

A candidate beam measurement method includes: measuring, by a terminal, a candidate beam within a preset time period following configuration information being received, where the configuration information includes configuration information of a reference signal of the candidate beam; and reporting, by the terminal, first indication information to a network-side device according to a measurement result, or prohibiting reporting of first indication information according to a measurement result, where the first indication information is used for indicating the measurement result.

When transmitting signals from a plurality of base stations (broadcasting stations), the base stations include at least a first base station having a first antenna with a first polarization and a second base station having a second antenna with a second polarization that is different from the first polarization. Then, when the first base station transmits a signal from the first antenna having the first polarization, the second base station transmits the same signal as the first antenna of the first base station from a second antenna having the second polarization, at the same time.

Embodiments herein provide a Multiple-Input Multiple-Output (MIMO) method for a communication system in general, and more particularly to an Orthogonal Frequency Division Multiplexing (OFDM) based communication system to serve more than one receivers on the same resources. The method includes selecting, by a transmitter, a plurality of precoder matrices for a plurality of receivers from a predefined codebook of precoders, where the plurality of precoder matrices is dynamically cycled within an allocated resource. Further, the method includes transmitting, by the transmitter, a symbol vector precoded with the plurality of precoder matrices over MIMO channel associated with the plurality of receivers.

An access point operates in a wireless local area network. The access point includes one or more memories and a processor, coupled to the one or more memories. The one or more memories include instructions, which when executed by the processor cause the access point to transmit a first frame to a plurality of stations in the wireless network and receive null data packet frames from the plurality of stations. After an interframe space period following the first frame, the instructions cause the access point to generate beamforming information based on the null data packet frames and transmit the beamforming information to the plurality of stations. The first frame indicates to the plurality of stations to each transmit a null data packet frame to the access point.

A method is performed by a wireless device in a network. The wireless device detects a triggering event related to a procedure for a handover from a source network node to a target network node in which the wireless device relies on downlink beam selection. The wireless device determines measurement information to include in a message to send to the target network node. The measurement information is obtained by measuring one or more beams according to at least one of a radio link management configuration, a beam management configuration, and a measurement configuration. In response to detecting the triggering event, the determined measurement information in the message is sent to the target network node.