Showing papers by "Niklas Wernersson published in 2020"

Multi-resource uplink sounding and antenna subset transmission

Abstract: According to some aspects of the techniques disclosed herein, a UE adapted to transmit on different antenna subsets transmits an indication that the UE can transmit a number of distinct RS resources, where each of the RS resources comprises at least one RS port. The UE transmits capability information indicating that the UE is capable of transmitting simultaneously on multiple RS resources and/or receives first and second RS configurations, where the first RS configuration is a first list of SRS resources that at least correspond to RS resource indications used for PUSCH transmission, and the second RS configuration is a second list of RS resources that may be used for SRS transmission. The UE receives an indication of at least one RS resource and transmits a physical channel on antennas of the UE associated with the indicated RS resources.

Unified ul and dl beam indication

Abstract: A user equipment (UE) the UE being configured to receive a message comprising configuration information, CI, indicating that a reference signal, RS, is quasi-co-located, QCL, with a transmission; and adjust a spatial Tx configuration for the transmission based on an RS associated with the received CI.

Variable coherence adaptive antenna array

Abstract: A user equipment (UE) (200, 500, 1530) transmits data to a base station (100, 500, 1520) in a wireless communication network. The UE (200, 500, 1530) comprises multiple an- tenna ports, and selects a precoding matrix from a respective first, second, third, or fourth set of precoding matrices according to a number of spatial layers. The first, second, third, and fourth sets of precoding matrices are available for all coherence capabilities and are comprised within a larger set of precoding matrices. The larger set comprises precoding matrices that are not available for all coherence capabilities. The first, second, third, and fourth sets of precoding ma- trices correspond to one, two, three, or four spatial layers, respectively. The number of columns in the selected precoding matrix is equal to the number of spatial layers and each column com- prises a single non-zero element and one or more zero elements. The UE (200, 500, 1530) transmits data on the number of spatial layers according to the selected precoding matrix.

뉴 라디오 업링크 단일 사용자 다중 입력 다중 출력 통신을 위한 전력 제어

Abstract: 물리 업링크 공유 채널 전송을 위한 안테나 포트들의 세트를 위해 사용될 전력을 결정하기 위한 시스템들 및 방법들이 본 명세서에 개시된다. 일부 실시예들에서, 사용자 장비(UE)는 물리 업링크 공유 채널 전송을 위한 업링크 전력 제어를 위해 사용될 전력(P)을 도출하고, UE가 물리 업링크 공유 채널 전송을 위해 코드북 기반 전송을 사용하고 있는지 또는 비-코드북 기반 전송을 사용하고 있는지에 의존하는 규칙에 따라 전력(P)에 기초하여 안테나 포트들의 세트를 위해 사용될 전력을 결정하도록 구성된 처리 회로를 포함한다. 안테나 포트들의 세트는 물리 업링크 공유 채널 전송이 비-제로 전력으로 전송되는 안테나 포트들이다.

Code-division multiplexing (cdm) groups for multi-source transmission

Abstract: Embodiments include methods, performed by a user equipment (UE), for transmitting or receiving a plurality of physical data channels in a wireless network. Such methods include receiving, from the wireless network, an indication of a Transmission Configuration Indicator (TCI) state that includes one or more source reference signal (RS) pairs. Each source RS pair has a pair of quasi-colocation (QCL) relations with antenna ports, for demodulation reference signals (DM-RS), that are mapped to a plurality of code-division multiplexing (CDM) groups. Such methods include receiving/transmitting the physical data channels based on the QCL relations for the source RS pairs of the indicated TCI state. Each physical data channel corresponds to a CDM group and is received/transmitted in association with the DM-RS having antenna ports mapped to the corresponding CDM group. Other embodiments include complementary methods performed by a wireless network, and UEs and wireless networks configured to perform such methods.