Methods and apparatuses for transmission configuration indication (TCI) state indication for control channels in a wireless communication system. A method of operating a user equipment (UE) includes receiving downlink control information (DCI) including at least one TCI codepoint indicating first and second TCI states and receiving an indicator to indicate the first or second TCI state to use for determining a quasi co-location (QCL) assumption for receiving a first physical downlink control channel (PDCCH). The method further includes determining, based on the indicator, the first or second TCI state to use for determining the QCL assumption; determining, based on the determined first or second TCI state, the QCL assumption for receiving the first PDCCH; and receiving, based on the determined QCL assumption, the first PDCCH in a first control resource set (CORESET).

Provided are a method and apparatus for supporting beam-based cooperative communication for smoothly providing a service in a wireless communication system. The method, performed by a terminal, of supporting beam-based cooperative communication includes: receiving, from a base station, configuration information for measuring quality of a beam; receiving first reference signals regarding desired channels respectively corresponding to a plurality of transmission beams received from the base station, and second reference signals regarding interference channels respectively corresponding to a plurality of transmission beams that interfere with the plurality of transmission beams received from the base station; and measuring quality of a beam regarding the plurality of transmission beams received from the base station, based on the configuration information, the first reference signals, and the second reference signals.

Systems and methods are described for radio frequency (RF) calibration in a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”) exploiting uplink/downlink channel reciprocity. The RF calibration is used to compute open-loop downlink precoder based on uplink channel estimates, thereby avoiding feedback overhead for channel state information as in closed-loop schemes. For example, a MU-MAS of one embodiment comprises a wireless cellular network with one or multiple beacon stations, multiple client devices and multiple distributed antennas operating cooperatively via precoding methods to eliminate inter-client interference and increase network capacity.

Systems and methods are described for radio frequency (RF) calibration in a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”) exploiting uplink/downlink channel reciprocity. The RF calibration is used to compute open-loop downlink precoder based on uplink channel estimates, thereby avoiding feedback overhead for channel state information as in closed-loop schemes. For example, a MU-MAS of one embodiment comprises a wireless cellular network with one or multiple beacon stations, multiple client devices and multiple distributed antennas operating cooperatively via precoding methods to eliminate inter-client interference and increase network capacity.

A method of configuring a multichannel uplink transmission (199) comprising multiple channels (151, 152, 159, 451, 452) between a wireless communication device (102) and multiple receive panels (1013-1, 1013-2) of at least one network node (101) is provided. The multiple receive panels (1013-1, 1013-2) and the at least one network node (101) are connected via backhaul links (1018-1, 1018-2). The method is carried out by the wireless communication device (102). The method comprises receiving, from the at least one network node (101), a downlink message encoding control data (4001) for the multichannel uplink transmission (199), the control data (4001) being associated with the backhaul links. The method further comprises configuring the multichannel uplink transmission (199) based on the control data (4001).

A method of configuring a multichannel uplink transmission (199) comprising multiple channels (151, 152, 159, 451, 452) between a wireless communication device (102) and multiple receive panels (1013-1, 1013-2) of at least one network node (101) is provided. The multiple receive panels (1013-1, 1013-2) and the at least one network node (101) are connected via backhaul links (1018-1, 1018-2). The method is carried out by the wireless communication device (102). The method comprises receiving, from the at least one network node (101), a downlink message encoding control data (4001) for the multichannel uplink transmission (199), the control data (4001) being associated with the backhaul links. The method further comprises configuring the multichannel uplink transmission (199) based on the control data (4001).

Methods, systems, and devices for signaling for transmission configuration indication (TCI) state activation for multiple transmission reception points are described. A user equipment (UE) may receive at least one control message indicating a first set of beam configurations associated with a first downlink shared channel from a first transmission reception point (TRP) and a second set of beam configurations associated with a second downlink shared channel from a second TRP. The UE may receive downlink control information (DCI) from the first and second TRPs indicating a first beam configuration of the first set of beam configurations and a second beam configuration of the second set of beam configurations, respectively. The UE may subsequently decode a first downlink transmission from the first downlink shared channel according to the first beam configuration and a second downlink transmission from the second downlink shared channel according to the second beam configuration.

Methods, systems, and devices for signaling for transmission configuration indication (TCI) state activation for multiple transmission reception points are described. A user equipment (UE) may receive at least one control message indicating a first set of beam configurations associated with a first downlink shared channel from a first transmission reception point (TRP) and a second set of beam configurations associated with a second downlink shared channel from a second TRP. The UE may receive downlink control information (DCI) from the first and second TRPs indicating a first beam configuration of the first set of beam configurations and a second beam configuration of the second set of beam configurations, respectively. The UE may subsequently decode a first downlink transmission from the first downlink shared channel according to the first beam configuration and a second downlink transmission from the second downlink shared channel according to the second beam configuration.

Disclosed are a method and device for transmitting an uplink channel for multiple transmission reception points (TRPs) in a wireless communication system. A method for transmitting an uplink channel, according to one embodiment of the present disclosure, may comprise the steps of: mapping the uplink channel to N (N is an integer greater than or equal to 2) resource regions within one slot; and transmitting the mapped uplink channel to a network. The N resource regions include a first resource region and a second resource region, the uplink channel mapped to the first resource region is transmitted on the basis of a first transmission beam, the uplink channel mapped to the second resource region is transmitted on the basis of a second transmission beam, and at least a start symbol in each of the first resource region and the second resource region may include a reference signal.

Various embodiments are generally directed to improved channel quality information feedback techniques. In one embodiment, for example, an evolved node B (eNB) may comprise a processor circuit, a communication component for execution by the processor circuit to receive a channel quality index for a physical downlink shared channel (PDSCH), the channel quality index associated with a defined reference resource, and a selection component for execution by the processor circuit to select a modulation and coding scheme (MCS) for transmission over the PDSCH of user equipment (UE) data in one or more resource blocks, the selection component to compensate for a difference between a cell-specific reference signal (CRS) overhead of the defined reference resource and a CRS overhead of the one or more resource blocks when selecting the MCS. Other embodiments are described and claimed.