Qualcomm Incorporated

Broadcom Corporation

Apple Inc.

Meta Platforms Technologies, LLC

Intel Corporation

Avago Technologies General IP (Singapore) Pte. Ltd.

Intel IP Corporation

Avago Technologies International Sales Pte. Limited

Avago Technologies General IP Pte, Ltd.

Carlos Horacio Aldana

Salvatore Talarico

Yingyang Li

Yongjun Kwak

Gang Xiong

Joonsuk Kim

Sai Pradeep Venkatraman

Christopher J Hansen

Ning Zhang

Dae Won Lee

Jong-Kae Fwu

Vinko Erceg

Matthew James Fischer

Alireza Raissinia

Markus Dominik Mueck

Saumitra Mohan Das

Nageen Himayat

Jeongho Jeon

Shilpa Talwar

Yushu Zhang

Seunghee Han

Santosh Paul Abraham

Stephen William Edge

Youn Hyoung Heo

Hwan-Joon Kwon

Debdeep Chatterjee

Emily H Qi

Alexey Vladimirovich Khoryaev

Sergey Panteleev

Candy Yiu

Alexander Sasha Sirotkin

Rajendra Tushar Moorti

Gengsheng Zhang

Qian Li

Mikhail S Shilov

Didier Johannes Richard Van Nee

Youhan Kim

Yan Zhou

George Cherian

Simone Merlin

Abhishek Pramod Patil

Maarten Menzo Wentink

Jason A Trachewsky

Chittabrata Ghosh

Bernhard Raaf

Bahareh Sadeghi

Xiaolong Huang

Xiaoxin Zhang

Sandip HomChaudhuri

Ashish Kumar Shukla

Ravi H Gidvani

Bishwarup Mondal

Rahul Malik

Zhibin Yu

Amichai Sanderovich

Dave A Cavalcanti

Bertram Gunzelmann

James Simon Cho

Harry G Skinner

Sam Padinjaremannil Alex

Debabani Choudhury

Ingolf Karls

Duncan Kitchin

Alecsander Petru Eitan

Hassnaa Moustafa

Claudio Da Silva

Thorsten Clevorn

Marcio Rogerio Juliato

Sergey D Sosnin

Ana Lucia Pinheiro

Jeff D Smith

Lopamudra Kundu

Dmitry Belov

Stefan Fechtel

Weihua Gao

Anthony Lee

Christian Drewes

Rafael Misoczki

Jeffrey R Foerster

Peiman Amini

Gwendolyn Denise Barriac

Vincent Knowles Jones, Iv

Lionel Jacques Garin

Vinay Sridhara

Seau Sian Lim

Eric Jon Ojard

Meghna Agrawal

Dominic Gerard Farmer

Biljana Badic

Ardavan Maleki Tehrani

Olaf Josef Hirsch

Ganesh Venkatesan

Sirikiat Lek Ariyavisitakul

Ashok Bhatia

Vishal Agarwal

Sundar Raman

Joseph Paul Lauer

Domagoj Siprak

Systems and methods for performing listen-before-talk (LBT) operations include a first wireless communication device which schedules a data burst comprising a plurality of chirps for transmitting on a channel to a second device. The wireless communication device may perform an LBT operation on the channel between the first device and the second device to determine that the channel is available, prior to transmitting a first chirp of the plurality of chirps. The wireless communication device may transmit the first chirp on the channel responsive to performing the LBT operation.

Systems and methods for performing coexistence operations in wireless spectrums

Systems and methods for ultra-wideband (UWB) in-band discovery may include a first UWB device which determines an availability for associations with potential controlees, and which generates and transmits an application control (AC) information element (IE) indicating the availability. A second UWB device may receive the AC IE, select an available slot for transmitting an association request to the first UWB device, and transmit the association request in the available slot. The first UWB device may receive the association request, generate an association response, and transmit the association response to the second UWB device.

Systems and methods for ultra-wideband in-band discovery

Systems and methods of segment splitting across frames include a first ultra-wideband (UWB) device that determines to split a scrambled timestamp sequence (STS) into at least a first portion and a second portion of the STS, for transmission to a second UWB device. The first UWB device may transmit a first frame comprising the first portion of the STS to the second UWB device. The first UWB device may transmit a second frame comprising the second portion of the STS to the second UWB device.

Methods and systems of segment splitting across frames

Systems, methods, and apparatuses disclosed herein can operate on an unlicensed spectrum. These systems, methods, and apparatuses can perform a Clear Channel Assessment (CCA) to detect transmissions within the unlicensed spectrum. Thereafter, these systems, methods, and apparatuses can transmit, in response to the unlicensed spectrum being clear of transmissions, one or more first symbols within an uplink (UL) burst portion of a frame structure. The frame structure can include a downlink (DL) burst portion and the UL burst portion separated by gap. These systems, methods, and apparatuses can receive one or more second symbols within the DL burst portion.

And apparatus for the FBE frame work for NR systems operating on unlicensed spectrum

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

Systems, apparatuses, methods, and computer-readable media are provided for wireless communication using an unlicensed spectrum. An access point (AP) operating in the unlicensed spectrum includes a processor circuitry, a transmitter, and a receiver. The processor circuitry is configured to perform a listen before talk (LBT) procedure using an LBT parameter and a maximum channel occupancy time (MCOT) that is compatible with another wireless protocol using the unlicensed spectrum. The processor circuitry is configured to divide a transport block (TB) into a plurality of code block groups (CBGs) for transmission over the unlicensed spectrum. The transmitter is configured to transmit the plurality of CBGs to a destination, and a receiver is configured to receive hybrid automatic repeat and request acknowledgment (HARQ-ACK) information corresponding to the transmitted plurality of CBGs. The processor circuitry is further configured to determine a HARQ-ACK assessment for the TB based on the HARQ-ACK information corresponding to the transmitted plurality of CBGs, and adjust a contention window size based on the HARQ-ACK assessment for the TB.

Contention window size update for CAT.4 LBT for CBG based retransmission in NR systems operating on unlicensed spectrum

Systems and methods for performing low-density parity-check (LDPC) coding may include a wireless communication device that determines a count of a plurality of information bits. The wireless communication device may select a codeword length according to the count. A LDPC encoder of the wireless communication device may generate a codeword for the plurality of information bits, the codeword having the codeword length. The wireless communication device may transmit the codeword to an LDPC decoder of another wireless communication device.

Methods and systems of performing low-density parity-check (LDPC) coding

Various embodiments herein provide techniques for wireless communication on New Radio unlicensed (NR-U) spectrum. For example, embodiments include techniques for a new listen-before-talk type and associated measurement window. Additionally, embodiments include techniques for determination of a cyclic prefix (CP) extension for an uplink transmission, such as a configured grant transmission or a dynamically scheduled transmission. Other embodiments may be described and claimed.

Channel access related enhancements to new radio unlicensed (NR-U)

The present disclosure is directed to systems and methods for controlling a number of allowed downlink/uplink (DL/UL) switching points. For example, the method may include acquiring a shared channel occupancy time (COT) that includes one or more DL bursts and/or UL bursts. The method may also include utilizing one or more of the DL bursts or the UL bursts as a reference burst. The method may also include deriving a metric for controlling the number of DL/UL switching points in the shared COT based on the reference burst. The method may also include comparing the metric to a threshold value. The method may also include setting the number of DL/UL switching points in the shared COT based on the comparison of the metric to the threshold value.

Controlling the number of downlink-to-uplink and uplink-to-downlink switching points within a shared channel occupancy time in new radio systems operating on unlicensed spectrum

A user equipment (UE), or other network component can operate to configure channel occupancy time (COT) sharing in random access procedures involving the unlicensed spectrum. At least some of the messages for the procedures can share a COT by configuring one or more gaps or listen-before-talk (LBT) procedures based on the gap or whether the COT sharing is UE or gNB initiated. Some configurations can depend on a location in the random access procedure that COT sharing is acquired.

Channel sensing for physical random access channel (PRACH) signals in new radio (NR) systems operating in the unlicensed spectrum

Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for facilitating retransmission procedures in New Radio (NR) technologies. Some embodiments are directed to a method that includes determining a contention window size (CWS) of an uplink/downlink (UL/DL) communication channel in a new radio unlicensed (NR-U) spectrum. The method also includes adjusting the CWS based on: defining a reference UL/DL burst set at a predetermined time length independent from a subcarrier spacing and partially spanning an UL/DL burst, and counting one or more code block groups (CBGs) in the reference UL/DL burst. The method further includes scheduling a retransmission of an UL/DL communication in the NR-U spectrum based on the adjusted CWS.

Contention window size adjustment for retransmission operations

Disclosed herein includes a system, a method, and a device for managing energy detection thresholds. A device can perform an energy detection (ED) measurement of a channel, comparing against a defined ED threshold function, so as to determine if the channel is occupied. The device can perform a measurement of a channel indicative of a power level of signals detected in the channel. The device can compare the measurement to a threshold having a value that is a continuous monotonic function having a sloped region between a first region having a first constant value and a second region having a second constant value. The sloped region can include a function of a maximum transmit power of the device and at least one of the first constant value or the second constant value. The device can determine, responsive to the comparison, whether the channel is occupied or unoccupied.

Systems and methods for managing energy detection thresholds

Methods and apparatus are disclosed for a UE and its serving base station in 5G NR systems to signal channel scan or channel sensing to allow channel occupancy time (COT) sharing before transmissions. The COT sharing may be initiated by the base station or by the UE by asserting a CCA indication to enable channel sensing by a UE or base station, respectively. When the UE receives and decodes the asserted CCA indication during downlink transmission, the UE may perform channel sensing during a short interframe space (SIFS) between the downlink transmission and a scheduled uplink transmission. When the UE detects that the sensed RF energy across an intended transmission band is greater than an energy detect threshold, the UE may refrain from transmitting during the scheduled uplink transmission. Otherwise or when the CCA indication is de-asserted, the UE may transmit during the scheduled uplink transmission without performing channel sensing.

Channel sensing indication when COT sharing in NR systems operating in unlicensed spectrum

Apparatuses, systems, and methods for performing contention window size updates for code block group based retransmission configurations in a wireless communication system. A code block group based wireless communication may be performed in unlicensed spectrum. A reference burst of the code block group based wireless communication may be identified. One or more of a number of acknowledgements or a number of negative acknowledgements associated with the reference burst may be identified. A contention window size adjustment may be determined based at least in part on one or more of the number of acknowledgements or the number of negative acknowledgements associated with the reference burst.

Contention window size updates for code block group based retransmission configurations

Growing community of inventors

Mountain View, CA, United States of America

Carlos Horacio Aldana