Qualcomm Incorporated

Deepak Agarwal

Senthilkumar Sundaram

Orod Raeesi

Abhishek Saurabh Sachidanand Sinha

Michael Francis Garyantes

Shmuel Vagner

Christian Oliver Thelen

James Krysl

Kalyan Kuppuswamy

Luca Blessent

Rohan Salvi

Roberto Airoldi

Shingyu Kwak

Hossein Asgharimoghaddam

Kaushal Parikh

An Open Radio Access Network Category B radio unit (O-RU) of a wireless network associates, for a first extended antenna carrier identifier (eAxC_Id) corresponding to a layer 0 precoding layer identifier (layerID), the first eAxC_Id with one or more second eAxC_Ids. Each second eAxC_Id corresponds to a non-layer 0 precoding layerID. The O-RU receives, for a user equipment (UE), a control plane message of Section Type 1 or 3. The message includes an extension type (ExtType) 3 first data layer, along with the first eAxC_Id in a transport header. The ExtType 3 first data layer indicates a number of precoding layers. The O-RU then precodes user plane data for downlink physical resource blocks allocated to the UE using the layer 0 precoding layerID of the first eAxC_Id, and each associated non-layer 0 precoding layerID of the one more second eAxC_Ids required to complete the number of precoding layers.

Control plane processing of downlink precoding in an open radio access network

Methods, systems, and devices for wireless communication are described. Some wireless communications network may operate in accordance with an open-RAN (ORAN) network specification which may support functional splitting between the ORAN distributed unit (O-DU) and the ORAN radio unit (RU). The O-DU may communicate with the O-RU using control messaging. The control message may include a resource resource element (RE) mask and a resource symbol mask, the resource RE mask indicating frequency resources to be allocated for a reference signal transmission across a set of antenna ports and the resource symbol mask indicating time resources to be allocated for the reference signal transmission. Additionally or alternatively, the O-DU may transmit a control message including a puncturing resource RE mask indicating frequency resources for applying a puncturing pattern and a symbol mask indicating time resources for applying the puncturing pattern during a transmission.

Techniques for beam information transmission and punctured channel indication

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a radio unit may output capability information regarding a number of beamforming codebooks supported by the radio unit. The radio unit may obtain configuration information that configures one or more beamforming codebooks for an antenna array of the radio unit. The radio unit may communicate using the one or more beamforming codebooks. Numerous other aspects are described.

Capability for multiple beamforming codebooks

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a radio unit (RU) may transmit, to a controller of the RU, a message including an ordered list of coordinates corresponding to a plurality of antenna elements in an antenna array of the RU. The RU may receive, from the controller, an indication of one or more low-level endpoints associated with one or more activated antenna elements of the plurality of antenna elements. Numerous other aspects are described.

Configuration of radio unit antenna elements

Certain aspects of the present disclosure provide techniques for wireless communication by a first network entity. The techniques may generally involve generating a message having a section with entries that represent time and frequency resources for transmitting data and reference signals over a fronthaul interface using modulation compression, transmitting the message to a second network entity via the fronthaul interface, and processing data and reference signal transmissions on the fronthaul interface in accordance with the section.

Compact data and reference signal representation with modulation compression

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a radio unit (RU) may receive, from a distributed unit (DU), a control plane message associated with a section type that is dedicated for information that applies to all resource blocks and spatial layers in a group of carriers or band sectors, wherein the control plane message includes information that applies to all resource blocks and spatial layers in an indicated group of carriers or band sectors. The RU may perform beamforming for one or more communications with a user equipment (UE) based at least in part on the information included in the control plane message. Numerous other aspects are described.

Growing community of inventors

San Diego, CA, United States of America

Deepak Agarwal