Qualcomm Incorporated

Other

Beijing Baidu Netcom Science and Technology Co., Ltd.

Microsoft Technology Licensing, LLC

Boe Technology Group Co., Ltd.

Beijing Boe Display Technology Co., Ltd.

Alibaba Group Holding Limited

Huawei Technologies Co., Limited

Broadcom Corporation

Thomson Licensing

Beijing Boe Technology Development Co., Ltd.

Baidu Online Network Technology (beijing) Co., Ltd.

Datang Mobile Communications Equipment Co., Ltd.

China University of Geosciences (beijing)

Quacomm Incorporated

Hao Xu

Wanshi Chen

Peter S Gaal

Tao Luo

Yongbin Wei

Tingfang Ji

Alberto Rico Alvarino

Durga Prasad Malladi

Aleksandar Damnjanovic

Juan Montojo

Yi Huang

Jing Jiang

Wei Zeng

Srinivas Yerramalli

Xiao Feng Wang

Jing X Sun

Naga Bhushan

Seyed Ali Akbar Fakoorian

Xiaoxia Zhang

Kapil Bhattad

Jing Lei

Yu Zhang

Hung Dinh Ly

Sony Akkarakaran

Seyedkianoush Hosseini

Joseph Binamira Soriaga

Jelena Damnjanovic

Taesang Yoo

Haitong Sun

Heechoon Lee

Alexandros Manolakos

Alexei Yurievitch Gorokhov

Junyi Li

Gavin Bernard Horn

Krishna Kiran Mukkavilli

Makesh Pravin John Wilson

Aamod Dinkar Khandekar

Rajat Prakash

Iyab Issam Sakhnini

Mostafa Khoshnevisan

Huilin Xu

Muhammad Nazmul Islam

Peter Pui Lok Ang

Arumugam Chendamarai Kannan

Gabi Sarkis

Tamer Adel Kadous

Ozcan Ozturk

Jizheng Xu

Hong Wang

Linhai He

Ashwin Sampath

Renqiu Wang

Madhavan Srinivasan Vajapeyam

Shimman Arvind Patel

Seyong Park

Chao Wei

Liangming Wu

Changlong Xu

Kai Chen

Chenxi Hao

Miguel Griot

Zhifei Fan

Jilei Hou

Jian Li

Jay Kumar Sundararajan

Peng Cheng

Qiaoyu Li

Masato Kitazoe

June Namgoong

John Edward Smee

Yang Wang

Siddhartha Mallik

Sharad Deepak Sambhwani

Umesh Phuyal

Ravi Palanki

Peter J Black

Mungal Singh Dhanda

Le Liu

Raghu Narayan Challa

Srinivasan Balasubramanian

Piyush Gupta

Hwan Joon Kwon

Chih-Hao Liu

Brian Clarke Banister

Yang Yang

Haris Zisimopoulos

Min Huang

Kuo-Chun Lee

Jun Wang

Hooman Darabi

Avneesh Agrawal

Arnaud Meylan

Xipeng Zhu

Shipeng Li

Gokul Sridharan

Parag Arun Agashe

Lin Yang

Feng Wu

Hao Liu

An online meeting system begins the process of connecting a user to an online meeting when a request is received from a user to start or join the online meeting. In response to the request, a pre-meeting user interface (UI) is displayed having a user interface control which, when activated, enables transmission of audio and/or video data for the online meeting, and prior to activation of the control, connection parameters are shared with an online meeting service to preheat the meeting. In response to activation of the control, transmission of audio and/or video data for the online meeting is enabled.

Reducing setup time for online meetings

Certain aspects of the present disclosure provide techniques for indicating a preemption of resources impacting a joint transmission from multiple transmitting entities to a user equipment. The transmitting entities may be associated with a virtual cell ID or a demodulation reference signal (DMRS) port group ID.

Preemption indication for DL multiplexing of different types of traffic with non-coherent joint transmission

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a signaling communication that includes information specifying whether a channel state information reference signal (CSI-RS) precoding resource block group includes a same quantity of resource blocks (RBs) that is included in a CSI reporting subband configured for the UE. The CSI-RS precoding resource block group may enable the UE to perform a channel estimation based at least in part on a CSI-RS transmitted by a base station. The UE may perform the channel estimation based at least in part on the CSI-RS transmitted by the base station. The channel estimation may be based at least in part on whether the CSI-RS precoding resource block group includes the same quantity of RBs that is included in the CSI reporting subband configured for the UE. Numerous other aspects are provided.

Configuring channel state information reference signal subband precoding resource block groups

Methods, systems, and devices for wireless communication are described that provide for reduced timing between certain downlink communications and responsive uplink communications relative to certain legacy systems (e.g., legacy LTE systems). A user equipment (UE) or base station may be capable of operating using two or more timing configurations that each include an associated time period between receipt of a downlink communication (e.g., a grant of uplink resources or shared channel data) and a responsive uplink communication (e.g., an uplink transmission using the granted uplink resources or feedback of successful reception of the shared channel data). In cases where a UE or base station are capable of two or more timing configurations, a timing configuration for a transmission may be determined and the responsive uplink communication transmitted according to the determined timing configuration.

Latency reduction techniques in wireless communications

Methods, systems, devices, and apparatuses for wireless communications that support transmission diversity enhancement for uplink control channel are described. Generally, the described techniques provide for enhanced performance of an uplink control channel such as a physical uplink control channel (PUCCH) through the use of transmission diversity. In some cases, multiple input multiple output (MIMO) techniques may be supported for transmission of an uplink control channel for a given format suitable for transmission diversity enhancement. A resource block (RB) used in an uplink control channel transmission may contain a number of resource elements (REs) across one or more resource blocks. According to some aspects, a transmit diversity scheme may be employed at the RE level through application of different spatial precoders for different groups of REs of a given RB.

Transmission diversity enhancement for uplink control channel

Methods, systems, and devices for wireless communication are described. A wireless device may transmit feedback, such as hybrid automatic repeat request (HARD) feedback for groups of code blocks rather than for an entire transport block or individual code blocks. The wireless device may transmit an acknowledgement (ACK) or negative-acknowledgement (NACK) to provide feedback for each code block group of a set of code block groups. An ACK may indicate that code blocks in a code block group were successfully decoded, and a NACK may indicate that at least one code block in a code block group was not successfully decoded. Wireless devices may support several techniques for grouping code blocks for feedback reporting to allow for efficient retransmissions and limited overhead. Different grouping schemes may be employed depending on system constraints, device capability, link conditions, or the like.

Code block grouping and feedback that support efficient retransmissions

A method in accordance with aspects of the disclosure comprises receiving a plurality of downlink control information (DCI) signals, wherein each DCI signal is associated with a Demodulation Reference Signal (DMRS) Port Group (DMRS-PG) of a plurality of DMRS-PGs, and each DCI signal within the plurality of DCI signals contains a DMRS-PG Identifier (DMRS-PGID) identifying the associated DMRS-PG, performing one or more measurements associated with the each DCI signal, and generating a multi-port-group uplink control information (UCI) signal based on the one or more measurements associated with the each DCI, wherein the multi-port-group UCI signal contains an indication of whether the each DCI is successfully received. The indication can be explicitly contained in the UCI, or implicitly realized using scrambling sequences associated with DMRS-PGs to scramble the UCI.

Multi-port-group uplink control information signaling and related systems and methods

Methods, systems, and devices for wireless communications in a multiple bandwidth part environment are described. In response to a serving beam failure in an active bandwidth part, the UE may determine a level of support provided by the active bandwidth part for a random access procedure, and may determine a contingency (e.g. fallback) bandwidth part that supports the random access procedure. In some cases, the UE may identify the contingency bandwidth as an initial bandwidth part used by the UE for a prior random access procedure. In some cases, the base station may send to the UE, an explicit indication of the contingency bandwidth part. In some cases, the UE may identify the contingency bandwidth part based on a reference signal. Upon determining the contingency bandwidth part, the UE may perform the random access procedure using the contingency bandwidth part.

Beam recovery in a multiple bandwidth part environment

Wireless devices may use polar codes for encoding transmissions and may support combining transmissions to improve decoding reliability (e.g., by achieving chase combining and incremental redundancy (IR) gains). For example, an encoding device may puncture a set of mother code bits using different puncturing patterns to obtain different redundancy versions for a first transmission and a re-transmission. Each puncturing pattern may correspond to an equivalent decoding performance. In some cases, to obtain equivalent puncture sets, the encoding device may perform punctured index manipulation procedures on an initial puncturing pattern. A punctured index manipulation procedure may involve switching a binary state for a binary bit at a same binary bit index for each puncture index in a puncturing pattern. A device may receive the transmissions generated using the equivalent puncture sets and may combine the information for improved decoding reliability.

Equivalent puncture sets for polar coded re-transmissions

Techniques are provided for retransmission of Physical Uplink Shared Channel (PUCCH) for Ultra Reliable Low Latency Communications (URLLC). A User Equipment (UE) transmits at least one code block of a control channel, the at least one code block including Channel State Information (CSI), wherein each code block is polar encoded by assigning bit indices of the code block to bit channels in a particular order of reliabilities of the bit channels. The UE detects a trigger, and in response, retransmits at least a portion of each code block including retransmitted CSI, wherein the portion is polar encoded by assigning bit indices of the retransmitted CSI to the bit channels in the reverse order of reliabilities of the bit channels as compared to the polar encoding of the CSI.

Retransmission of physical uplink control channel (PUCCH) for ultra reliable low latency communications (URLLC)

Certain aspects of the present disclosure generally relate to techniques for encoding and decoding bits of information using cyclic redundancy check (CRC) concatenated polar encoding and decoding. A method generally includes obtaining the bits of information to be transmitted. The method includes performing CRC outer encoding of the bits of information using an even-weighted generator polynomial to produce CRC encoded bits. The method includes performing polar inner encoding of the CRC encoded bits to generate a codeword. The method includes discarding a first code bit at a beginning of the codeword. The shortened codeword is transmitted over a wireless medium. In another method, bit-level scrambling is performed on the CRC encoded bits before the polar encoding to. In another method, only odd-weighted generator polynomials are selected.

Methods and apparatus for CRC concatenated polar encoding

Certain aspects of the present disclosure are generally directed to design of random access channel (RACH) procedures. For example, certain aspects of the present disclosure provide a method for wireless communication by a user equipment (UE). The method generally includes receiving an indication of a RACH procedure capability of a network entity, and selecting a first RACH procedure or a second RACH procedure, based on the indication. The UE may then communicate one or more messages with the network entity based on the selected first RACH procedure or the selected second RACH procedure.

Random access channel (RACH) procedure design

A device for detecting a rotary angle used for an excavator. The device can include: a synchronous belt, arranged around a rotating shaft of a slewing mechanism of the excavator, a tooth-shaped surface of the synchronous belt being away from a surface of the rotating shaft; a transmission part, engaged with the tooth-shaped surface of the synchronous belt and arranged on a supporting base; an angle detection part, in transmission connection to the transmission part; and the supporting base, connected to a chassis of the excavator.

Device for detecting rotary angle and excavator

Various techniques for narrowband communications in a wireless communications network are provided. Narrowband communications may be transmitted using a single resource block (RB) of a number of RBs used for wideband communications. In order to provide for efficient device discovery and synchronization using narrowband communications, a synchronization signal, such as a primary synchronization signal (PSS) or secondary synchronization signal (SSS), may be transmitted within the single resource block. The synchronization signal may be transmitted, for example, using multiple orthogonal frequency division multiplexing (OFDM) symbols within the single RB. A common reference signal (CRS) may also be present in the single resource block, which may puncture the synchronization signal, in some examples. In other examples, the synchronization signal may be mapped to non-CRS symbols of the single resource block.

Downlink and synchronization techniques for narrowband wireless communications

Growing community of inventors

San Diego, CA, United States of America

Hao Xu