Apple Inc.

Intel Corporation

Bishwarup Mondal

Alexei Vladimirovich Davydov

Yushu Zhang

Gang Xiong

Avik Sengupta

Dae Won Lee

Guotong Wang

Yongjun Kwak

Debdeep Chatterjee

Yuan Zhu

Jong-Kae Fwu

Lopamudra Kundu

Hong He

Wenting Chang

Salvatore Talarico

Victor Sergeev

Daewon Lee

Alexei Davydov

Prerana Rane

Sungho Moon

Shirish Nagaraj

Jeongho Jeon

Carlos Horacio Aldana

Yingyang Li

Ajit Nimbalker

Sergey Panteleev

Gregory Vladimirovich Morozov

Seau Sian Lim

Toufiqul Islam

Fatemeh Hamidi-Sepehr

Dmitry Dikarev

Glenn J Bradford

Peng Lu

Seunghee Han

Yang Tang

Jie Cui

Hwan-Joon Kwon

Joonyoung Cho

Qiaoyang Ye

Sameer Pawar

Artyom Putilin

Jiwoo Kim

Rui Huang

Manasa Raghavan

Qiming Li

Andrey Chervyakov

Anthony Lee

Hua Li

Youn Hyoung Heo

Gregory Morozov

Suenghee Han

Disclosed herein are system, method, and computer program product embodiments for performing Synchronization Single Block (SSB) transmission using a number of SSB beams. An embodiment operates by determining a SSB index for a SSB based on a candidate position in a set of candidate positions and the number of SSB beams. The embodiment determines a shift value for the SSB index based on the candidate position and the number of SSB beams. The embodiment determines a frame timing for the SSB based the SSB index and the shift value for the SSB index. The embodiment then transmits, by radio front end circuitry, the SSB to a user equipment (UE) based on the frame timing for the SSB.

Discovery reference signal design for quasi co- location and frame timing information in new radio user equipment

A generation node B (gNB) configured for aperiodic channel state information reference signal (CSI-RS) triggering and transmission may encode signalling for transmission to a user equipment (UE). The signalling to indicate an aperiodic Triggering Offset (aperiodicTriggeringOffset). The aperiodic Triggering Offset may comprise a slot offset. The gNB may encode a downlink control information (DCI) for transmission that may trigger transmission of a CSI-RS in one or more aperiodic CSI-RS resource set(s) (i.e., in one or more slots (n)). The DCI triggers transmission of the aperiodic CSI-RS within a triggered slot with the slot offset (i.e., the aperiodic TriggeringOffset). The gNB may transmit the CSI-RS in resource elements of the triggered slot in accordance with the slot offset, when CSI-RS resources are available in the slot at the slot offset. The gNB may postpone transmission of the aperiodically triggered CSI-RS to a first available downlink slot when the CSI-RS resources are not available in the triggered slot at the slot offset.

Aperiodic CSI-RS resource set triggering by DCI with aperiodic triggering offset

Systems, apparatuses, methods, and computer-readable media are provided for a user equipment (UE) in a wireless communication system using an unlicensed spectrum. The UE includes a processor circuitry and radio front end circuitry coupled with the processor circuitry. The processor circuitry is configured to determine UE processing time for a first physical downlink shared channel (PDSCH) transmission and a second PDSCH transmission, and an additional processing time corresponding to the first and the second PDSCH transmissions. The processor circuitry is configured to process a hybrid automatic repeat and request acknowledgement (HARQ-ACK) assessment information for inclusion in a subframe on a physical uplink control channel (PUCCH) following the UE processing time and the additional processing time. The radio front end circuitry is configured to receive the first and the second PDSCH transmissions from a base station, and transmit the HARQ-ACK assessment information on the PUCCH to the base station.

User equipment processing time relaxation for multi-DCI NC-JT PDSCH reception

The first circuitry may be operable to establish a first UE Receive (Rx) beam as being for reception of data from a first eNB. The second circuitry may be operable to process a transmission including Downlink Control Information (DCI), wherein the DCI carries an eNB cell-switching indicator. The first circuitry may also be operable to establish a second UE Rx beam as being for reception of data from a second eNB based on the eNB cell-switching indicator.

Beamforming for dynamic cell switching

Techniques are provided for determining and processing uplink listen before talk (LBT) failures, including the determination of a consistent and systematic LBT failure associated with uplink transmissions in new radio (NR) operating over unlicensed spectrum. For example, a user equipment (UE) identifies a plurality of transmission occasions to be performed by the UE over the unlicensed spectrum. The UE further performs a plurality of listen before talk (LBT) procedures associated with respective ones of the plurality of transmission occasions to be performed by the UE, and tracks a number of LBT failures during the performance of the plurality of LBT procedures, wherein a LBT failure occurs due to a channel used for the associated LBT procedure being busy or when an LBT backoff is still running from a previous LBT failure. The UE further implements a recovery procedure in response to the LBT failures exceeding a predetermined threshold within a predetermined time period.

Apparatus and method of handling uplink listen before talk (LBT) failures for new radio (NR) systems operating on unlicensed spectrum

Techniques are provided for selecting a spatial relation for a physical uplink shared channel (PUSCH) transmission by a user equipment (UE) operating in a multi-transmission reception point (TRP) multi-antenna panel environment. For example, the UE prepares a PUSCH transmission intended for a first TRP of a plurality of TRPs available to the UE in the wireless network, and determines a first antenna port group of a plurality of antenna port groups of the UE that is more directionally aligned with the first TRP than other antenna port groups of the plurality of antenna port groups. The UE further transmits the PUSCH transmission to the first TRP via the first antenna port group using a default spatial relation used for a physical uplink control channel (PUCCH) communication with the first TRP via the first antenna port group.

PUSCH default beam in NR with multi-TRP multi-panel operation

Systems, apparatuses, methods, and computer-readable media are provided for use in a wireless network for control signaling of uplink transmission for multiple antenna panels.

Systems and methods for control signaling of uplink transmission for multiple antenna panels

Embodiments are directed to beam switching. An embodiment of a user equipment (UE) comprises a processor to configure the UE to receive, one or more repetitions of a transport block (TB) using a first physical downlink shared channel (PDSCH) beam, obtain a downlink control information (DCI) comprising one or more transmission configuration indicator (TCI) states, and configure the UE to switch from the first PDSCH beam to a second PDSCH beam, different from the first PDSCH beam, based at least in part on the one or more TCI states.

Technologies for beam switching to receive downlink repetitions

An apparatus for a base station configured for operation in a C-RAN includes processing circuitry coupled to a memory. To configure the base station for multi-user multiple input multiple output (MU-MIMO) signal processing, the processing circuitry is to decode a plurality of sounding reference signals received from a corresponding plurality of UEs via a corresponding plurality of channels. The plurality of channels are estimated based on the plurality of sounding reference signals. A beamforming matrix is determined based on a channel matrix corresponding to the plurality of channels. Beamforming is performed on a plurality of uplink (UL) data streams received from the plurality of UEs, to generate a plurality of beamformed streams. The beamforming is based on the beamforming matrix. Interference suppression is performed on the plurality of beamformed streams to generate a plurality of output data streams. The interference suppression is based on non-orthogonal DMRSs received from the UEs.

Uplink multi-user multiple-input-multiple-output (MU-MIMO) configurations

In accordance with various embodiments herein, for single downlink control information (DCI) and/or multi-DCI multi-transmission-reception point (TRP) transmission, a default physical downlink shared channel (PDSCH) beam is determined based on the lowest indexed control resource set (CORESET) within the set of monitored CORESETs in the latest slot with the same value of CORESETPoolIndex. Other embodiments may be described and claimed.

Setting default physical downlink shared channel (PDSCH) beams

Various embodiments herein are directed to set physical downlink shared channel (PDSCH) default beam behavior for single transmission-reception point (TRP), single downlink control information (DCI) multi-TRP and multi-DCI multi-TRP operation, as well as physical downlink control channel (PDCCH) prioritization based on quasi-colocation (QCL) Type-D for multi-panel reception and single panel reception.

Default PDSCH beam setting and PDCCH prioritization for multi panel reception

The present disclosure provides systems and methods for mapping transmission configuration indication (TCI) states to demodulation reference signal (DMRS) ports groups in a wireless network. For instance, a TCI state to DMRS ports group mapping of a user equipment (UE) can be determined. Each DMRS port in a DMRS ports group shares a quasi-co-location (QCL) assumption. The TCI state to DMRS ports group mapping comprises multiple TCI state groups. The TCI state to DMRS ports group mapping corresponds each TCI state group to one or more DMRS ports groups. A TCI state group from the DMRS ports group mapping can be selected for the UE. Data indicative of the selected TCI state group and the corresponding one or more DMRS ports groups can be provided to the UE based at least in part on the TCI state group from the DMRS ports group mapping.

Systems and methods for mapping transmission configuration indication (TCI) state and demodulation reference signal (DMRS) ports groups

Some embodiments of this disclosure include apparatuses and methods for reporting channel state information (CSI) for multiple spatial layers. The apparatuses and methods can include at least: determining, by a user equipment (UE), a precoding matrix indicator (PMI) for a set of precoding matrixes, wherein the PMI is determined based on a combination of digital Fourier transformation (DFT) spatial domain (SD) vectors, or based on DFT-based frequency domain (FD) compression; and transmitting, by the UE, the PMI to a next-generation NodeB (gNB).

Method of type II CSI reporting for multiple spatial layers

Various embodiments herein provide techniques for minimum mean-square error interference rejection combining (MMSE-IRC) processing of a received signal, distributed between a baseband unit (BBU) and a remote radio unit (RRU). The RRU may perform uplink receive beamforming (e.g., using maximum ratio combining (MRC)) based on multiple channel measurements (e.g., a set of multiple sounding reference signal (SRS) channel measurements) obtained on respective measurement signals transmitted by a user equipment (UE). The RRU may send the processed signal to the BBU for further processing. The BBU may perform MMSE-IRC based on the processed signal received from the RRU, e.g., using demodulation reference signals (DM-RSs). Other embodiments may be described and claimed.

Uplink receive beamforming for high mobility user in networks with cloud radio access network (C-RAN) architecture

Growing community of inventors

San Ramon, CA, United States of America

Bishwarup Mondal