Various aspects of the disclosure relate to distributed multiple-input multiple-output (MIMO) communication such as coordinated beamforming or Joint MIMO. In some aspects, distributed MIMO is used to support communication in a cluster of wireless nodes (e.g., access points). A distributed MIMO scheduling scheme as taught herein is used to schedule the wireless nodes (e.g., access points and/or stations) operating within the cluster. For example, stations may be scheduled across basis services sets of the access points for a downlink transmission and/or an uplink transmission.

Provided are a data transmission method, a network device and a terminal device. The method comprises: generating first instruction information, the first instruction information being used to instruct a terminal device to simultaneously send multiple pieces of uplink information corresponding to multiple downlinks over multiple uplink channels, or the first instruction information being used to instruct the terminal device to send multiple pieces of uplink information over multiple uplink channels by means of a manner of a time-division multiplexing, or the first instruction information being used to instruct the terminal device to send multiple pieces of uplink information over a first uplink channel among multiple uplink channels; sending the first instruction information to the terminal device.

Methods, systems, and devices for wireless communications are described. A base station may identify a listen-before-talk (LBT) procedure to use for transmitting a downlink signal to a user equipment (UE) on a shared radio frequency spectrum band. The LBT procedure may be a group LBT procedure associated with a first set of contention window durations or an individual listen-before talk procedure associated with a second set of contention window durations. The base station may determine a contention window duration corresponding to the identified LBT procedure, perform the identified LBT procedure using the determined contention window duration, and transmit the downlink signal to the UE based on the performed LBT procedure.

Aspects provide a mechanism for activating a secondary serving cell (SCell) in a wireless communication network supporting a multi-cell transmission environment. In some examples, a scheduled entity (e.g., a UE) in a connected mode with a primary serving cell (PCell) may synchronize with the SCell to activate the SCell for multi-cell communication with the PCell and the SCell. To enable synchronization with the SCell, the PCell may trigger communication and processing of one or more reference signals between the scheduled entity and the SCell.

The disclosure relates to a 5.sup.th generation (5G) communication system or a 6.sup.th generation (6G) communication system for supporting higher data rates beyond a 4.sup.th generation (4G) communication system such as long term evolution (LTE). A method of a user equipment in a wireless communication system is provided. The method includes receiving, a configuration information for a plurality of transmission configuration indicator (TCI) state including a first TCI state of a first type for a control resource set (CORESET) and a second TCI state of a second type which is different from a first type, receiving, a physical downlink control channel (PDCCH) based on the first TCI state, the first DCI including information indicating the first TCI state for a first physical downlink shared channel (PDSCH) scheduled to be transmitted from a first transmission reception point (TRP) and information indicating a second TCI state for a second PDSCH scheduled to be transmitted from a second TRP.

The present application relates to a method for adding a node in a mobile communication system. A method performed by a first node in a mobile communication system is provided. User equipment (UE) is connected to the first node and a second node. The method comprises: sending a message used for requesting or requiring an addition of a third node; and receiving an acknowledge message in response to the message.

In a first aspect, a method of wireless communication includes receiving, by a user equipment (UE) from a first network entity, a multiple component carrier (CC) signaling message including multiple CC scheduling information. The method also includes receiving, by the UE from, a downlink control information transmission indicating a downlink control information indication for multiple CCs, and determining a first downlink control information parameter for a first CC and a second downlink control information parameter for a second CC based on the downlink control information indication and the multiple CC scheduling information. The method further includes receiving, from the first network entity, a first downlink transmission for the first CC based on the first downlink control information parameter, and receiving, from a second network entity, a second downlink transmission for the second CC based on the second downlink control information parameter. In other aspects, uplink transmissions may be sent.

The present disclosure relates to a communication technique for converging IoT technology with a 5G communication system for supporting a higher data transmission rate beyond a 4G system, and a system therefor. The present disclosure may be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or connected car, health care, digital education, retail business, a security and safety-related service, etc.) on the basis of 5G communication technology and IoT-related technology. In addition, the present disclosure relates to a method and device for carrying out cooperative communication in a wireless communication system. A method of a terminal of a communication system, according to one embodiment of the present disclosure, comprises the steps of: receiving, from a base station associated with a first cell, cell configuration information including a TCI configuration and a QCL configuration; checking a QCL reference antenna port on the basis of the cell configuration information; and receiving a signal from the base station on the basis of a QCL relationship with the checked QCL reference antenna port, wherein the QCL reference antenna port may be checked on the basis of a CSI-RS or SSB associated with a second cell.

Certain aspects of the present disclosure provide techniques for enhancing sidelink communications between devices. As described herein, a single sidelink control information (SCI) may schedule sidelink data transmissions with repetition in time and/or frequency.

This disclosure provides methods, devices, and systems for resource selection supporting the identification of resources for receiving two-stage downlink control information (DCI). In some systems, for example, a base station may transmit a first stage DCI and a second stage DCI to a user equipment. The first stage DCI may include control information for a group of UEs including the UE and the second stage DCI may include control information that is specific to the UE. The UE may determine a resource to use for receiving the second stage DCI based on an indication in the first stage DCI. In some examples, the UE may determine a resource from a resource pool based on a resource selector included in the first stage DCI and receive the second stage DCI over the determined resource. The resource pool may be indicated by the first stage DCI or pre-configured at the UE.