Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Sutharshun Varatharaajan

Markus Landmann

Marcus Grossmann

Marcus Großmann

Venkatesh Ramireddy

Lars Thiele

Martin Kurras

Thomas Wirth

Thomas Haustein

Mohammad Alawieh

Niels Hadaschik

Leszek Raschkowski

Marcus Groβmann

A communication device for providing a channel state information, CSI, feedback in a wireless communication system includes a transceiver to receive, from a transmitter a radio signal via a time-variant, frequency-selective MIMO channel, the radio signal including downlink reference signals according to a reference signal configuration including a number of antenna ports, and downlink signals including the reference signal configuration; and a processor. The processor estimates an explicit CSI in the frequency domain using measurements on the downlink reference signals on the radio channel, selects a Doppler-delay precoder matrix (W) for a composite Doppler-delay-beam three-stage precoder, calculates either one or more of a channel quality indicator, CQI, and/or a precoder matrix indicator, PMI, and/or a rank indicator, RI, and reports to the transmitter the CSI feedback including either one or more of the CQI, and/or the PMI and/or the RI.

Doppler-delay codebook-based precoding and CSI reporting for wireless communications systems

The embodiment of the present disclosure relates to methods and apparatuses for enhancing the reporting of the channel state information (CSI) with respect to multiple downlink resources. A method performed by a UE comprises: receiving, from a network node, a CSI report configuration which provides a number N of reference signal resources for channel measurement; performing measurements on said N RS resources; calculating or determining one or more CSI quantities for a number M of selected RS resources; and transmitting, to the network node, a CSI report including the calculated or determined CSI quantities, wherein the CSI report comprises two parts—part 1 and part 2—, and wherein the content contained in part 1 indicates the size of part 2. There is also disclosed a UE, a method performed in a network node and a network node.

Methods and apparatuses for enhanced CSI reporting with respect to multiple downlink

A communication device providing CSI feedback in a wireless communication system includes a transceiver to receive downlink reference signals and downlink signals including a reference signal configuration. A processor estimates an explicit CSI in the frequency domain. The processor selects a Doppler-delay-beam precoder matrix for a composite Doppler-delay-beam three-stage precoder, which is based on one or more codebooks including

Doppler codebook-based precoding and CSI reporting for wireless communications systems

Methods and apparatuses for enhancing the reliability and performance of the PDCCH in a wireless network. The method performed by a UE comprises: receiving a configuration of search space sets for the PDCCH, each search space set comprises a number of PDCCH candidates made up of a number of resource elements; monitoring for DCIs of a specific format as indicated in the configured PDCCH candidates; wherein a configuration an indication of an association of the search space sets with a search space set pool is provided to the UE, and at least two PDCCH candidates from the search space sets are associated with the same DCI content, or an association of two or more TCI states with a single CORESET is obtained from the network node; and applying the configuration(s) or indication of the association for receiving one or more PDCCH(s) on the search space sets.

Methods and apparatuses for enhancing the reliability and performance of the physical downlink control channel in a wireless communications network

Example methods are provided that may be performed by a radio base station; or a user equipment (UE). An example apparatus is also described in the form of a UE for providing antenna port-related information to a radio base station in a communications network. A method performed by the UE may include receiving at least one DownLink (DL) beam from the radio base station, and reporting at least one Sounding Reference Signal (SRS) resource identification information for the at least one received DL beam. The SRS resource identification information may be associated with at least one antenna port of the UE receiving the corresponding DL beam.

Methods and apparatuses for providing antenna port related information in a communications network

The methods and apparatuses for signaling framework for flexible beam management in a wireless communications network. A method performed by a UE comprises: receiving, from a network node, via a higher layer, a configuration of at least one information element (IE), said configuration comprising at least: an identifier (ID) unique to each IE and ID(s) of one or more uplink (UL) resource(s) and/or downlink (DL) resource(s) that is/are used to indicate at least a spatial filter or beam direction for transmission of at least a Physical Uplink Shared Channel (PUSCH) resource and/or a Physical Uplink Control Channel (PUCCH) resource, and/or a Sounding reference Signal (SRS) resource; and applying the configuration provided in the at least one IE for the transmission of the PUSCH resource, and/or the PUCCH resource and/or the SRS resource. There is also provided a method performed by a network node, a UE and a network node.

Methods and apparatuses for signaling framework for flexible beam management

The embodiments relate to methods and apparatuses for enabling transmission of at least one PUSCH. A method comprises: configuring a UE to receive a single PDCCH or a higher layer grant that schedules at least one PUSCH transmission occasion. If one PUSCH transmission occasion is scheduled: scheduling the UE to transmit at least two segments of the PUSCH, each segment is associated with a transmission setting comprising a set of transmission parameters, at least one transmission parameter associated with one of the segments is different from the corresponding transmission parameter associated with at least one other segment. If more than one PUSCH transmission occasion is scheduled, each PUSCH transmission occasion is associated with a transmission setting, wherein at least one transmission parameter associated with one of the PUSCH transmission occasions is different from the corresponding transmission parameter associated with one other PUSCH transmission occasion.

Methods and apparatuses for physical uplink shared channel for multi transmit-receive-point communications in a wireless communications network

A user equipment, UE, for communicating with a base station, BS, in a wireless communication system is described. The UE comprises one or more antenna arrays, each antenna array having a plurality of antenna elements. The UE signals to a BS, dependent on a property of the one or more antenna arrays, whether the UE supports full beam correspondence, partial beam correspondence or no beam correspondence.

Beam correspondence indication and bitmap for beam reporting for wireless communications

The embodiments herein relate to a method performed by a network node and a network node. The method comprises setting a higher-layer parameter usage in at least one sounding reference signal, SRS, resource set configuration to nonCodebook or Codebook, wherein each configured SRS resource set comprises one or more SRS resources, and scheduling a physical uplink shared channel (PUSCH) transmission via a downlink control information (DCI) wherein at least two SRS resources are indicated via a sounding reference signal resource indicator (SRI) field of the DCI, wherein each SRS resource is associated with a different SRS resource set; and receiving from the user equipment a physical uplink shared channel that is transmitted using the ports associated with the indicated SRS resources.

SRS configuration and indication for codebook and non-codebook based UL transmissions in a network

Methods and apparatuses for enhancing the reliability and performance of the PDCCH in a wireless network. The method performed by a UE comprises: receiving a configuration of search space sets for the PDCCH, each search space set comprises a number of PDCCH candidates made up of a number of resource elements; monitoring for DCIs of a specific format as indicated in the configured PDCCH candidates; wherein a configuration or an indication of an association of the search space sets with a search space set pool is provided to the UE, and at least two PDCCH candidates from the search space sets are associated with the same DCI content, or an association of two or more TCI states with a single CORESET is obtained from the network node; and applying the configuration(s) or indication of the association for receiving one or more PDCCH(s) on the search space sets.

Growing community of inventors

Ilmenau, Germany

Sutharshun Varatharaajan