Qualcomm Incorporated

Shmuel Vagner

Assaf Touboul

Gideon Shlomo Kutz

Shay Landis

Michael Levitsky

Lior Uziel

Ran Berliner

Igor Gutman

Guy Wolf

Cheol Hee Park

Moshe Ben-Ari

Meir Tsadik

Deepak Agarwal

Senthilkumar Sundaram

Abhishek Saurabh Sachidanand Sinha

Arvind Vardarajan Santhanam

Amit Bar-Or Tillinger

Jacob Pick

Alexander Vladimir Sverdlov

Orod Raeesi

Michael Francis Garyantes

Shingyu Kwak

Roberto Airoldi

Yaniv Levi Elgarisi

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

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

Methods, systems, and devices for wireless communications are described. Some wireless communications systems may support communications. For example, a wireless communications system may support New Radio (NR) cellular-vehicle to everything (C-V2X) communication. In some examples, a user equipment (UE) may receive a sidelink control channel for a sidelink transmission on a first set of symbols of a time slot (e.g., the first two or three symbols of a time slot). The UE may decode the sidelink control channel and disable one or more radio frequency (RF) components associated with processing the sidelink transmission on a second set of symbols of the time slot based on decoding the sidelink control channel. For example, the UE may disable one or more RF components if the UE determines the sidelink control channel is decoded unsuccessfully.

Techniques for power saving in sidelink communications

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, within a subframe, a plurality of sidelink control channel signals providing scheduling information for a plurality of sidelink shared channel signals that are also received within the subframe. The UE may determine to use one or more of the plurality of sidelink control channel signals as pilot signals for decoding the plurality of sidelink shared channel signals. The UE may decode the plurality of sidelink shared channel signals based at least in part on the plurality of sidelink control channel signals as pilot signals.

Sidelink control channel successive parameter estimation

Methods, systems, and devices for wireless communications are described. The method includes communicating control signaling scheduling a sidelink transmission via a physical sidelink channel, receiving, by a first user equipment (UE), the sidelink transmission including one or more reference signals from a second UE via the physical sidelink channel based on the control signaling, and monitoring the physical sidelink channel based on time synchronization, frequency synchronization, or both, determined using the one or more reference signals.

Physical sidelink channel packet-based synchronization

Methods, systems, and devices for wireless communications are described. A transmitting device may identify location data associated with a physical location of the transmitting device. The transmitting device may identify a time-frequency resource within a slot, the time-frequency resource corresponding to at least a portion of the location data associated with the physical location of the transmitting device. The transmitting device may generate a sequence based at least in part on the portion of the location data, or the slot, or the time-frequency resource, or a combination thereof. The transmitting device may encode a signal using the sequence. The transmitting device may transmit the signal using the identified time-frequency resource to indicate the physical location of the transmitting device.

Collision avoidance and implicit location encoding in vehicle-to-pedestrian networks

In order to enable asynchronous, autonomous reception beam switching at a UE while minimizing degradation due to a transient in link performance, a method, apparatus, and computer-readable medium for wireless communication are provided. The apparatus receives CSI-RS on different reception beams in different symbols, wherein one reception beam being a current serving reception beam, and determines whether to switch to a different reception beam based on a SPEFF metric for the different reception beam and/or a severity of a potential link transient qualified in terms of the expected CQI/MCS degradation in the channel. The apparatus may switch from a current serving reception beam to a second reception beam when a first channel quality for the current serving reception beam is within a threshold value of a second channel quality for the second reception beam, the second channel quality being measured using a current configuration.

Autonomous reception beam refinement and tracking

Methods, systems, and devices for wireless communication are described. A base station may support layer-to-layer listen-before-talk (LBT) interfacing for logical discontinuous transmission (DTX) events. That is, a layer one entity of the base station may indicate to a higher layer that a channel is unavailable or experiencing high levels of interference. For example, a layer one entity of the base station may perform a failed clear channel assessment (CCA) or LBT procedure on the channel. The layer one entity may then convey an indication that a scheduled message was not successfully transmitted to a higher layer (e.g., a media access control (MAC) layer that performs link adaptation and scheduling). The higher layer may schedule a retransmission of the message based on the indication. In some cases, the same link parameters may be used. In other cases, the link parameters may be updated based on channel conditions.

LBT interface for logical DTX

Backhaul traffic reliability is improved in unlicensed spectrum bands by using cross-protocol channel sensing and reservation. Physical carrier sensing may be employed to scan channel quality of a plurality of carriers of an unlicensed spectrum band and select a carrier for use in a wireless backhaul communications link between a first base station and a second base station based on the scanned channel quality. The described features may further include the first base station transmitting a self-addressed reservation frame on the selected first carrier prior to transmission of backhaul data from the first base station to the second base station over the first carrier.

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Raanana, Israel

Shmuel Vagner