公开(公告)号：US11076358B2

公开(公告)日：2021-07-27

申请号：US16544456

申请日：2019-08-19

Applicant: QUALCOMM Incorporated

Inventor： Wei Yang ,  Chih-Ping Li ,  Seyedkianoush Hosseini ,  Jing Jiang ,  Wanshi Chen

IPC: H04W52/14 ,  H04W52/32 ,  H04W52/24 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify one or more first user equipments (UEs) that have been configured for grant-free transmissions on an allocation of resources. In some cases, the base station may then schedule an uplink transmission for a second UE on resources that overlap the allocation of resources. Accordingly, the base station may transmit a power adjustment indication (PAI) to the one or more first UEs to adjust a transmit power for uplink transmissions on the overlapping resources. In some cases, the PAI may include an indication of frequency-domain resources for the power adjustment indicated in the PAI, a specified time duration for the power adjustment indicated in the PAI, an indication of specific uplink transmissions to which the transmit power adjustment is to be applied, or a combination thereof.

公开(公告)号：US11070237B2

公开(公告)日：2021-07-20

申请号：US16487242

申请日：2017-03-23

Applicant: QUALCOMM Incorporated

Inventor： Jian Li ,  Changlong Xu ,  Chao Wei ,  Jilei Hou ,  Jing Jiang

IPC: H03M13/29 ,  H03M13/13 ,  H03M13/09 ,  H04L1/00 ,  H03M13/00 ,  H03M13/15

Abstract: Methods, systems, and devices for wireless communication are described that support channel selection for parity bits in polar coding techniques. In some cases, an encoder or decoder of a wireless device may assign information bits, frozen bits, and parity check bits to polar channels of an encoder or decoder based on reliability metrics. The information bits may initially be assigned and based on a channel index of the first information bit, the parity check bits may be assigned to channels having higher channel indices than the first information bit. After assignment, the bits may be encoded or decoded.

公开(公告)号：US11051292B2

公开(公告)日：2021-06-29

申请号：US16678845

申请日：2019-11-08

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Huilin Xu ,  Hari Sankar ,  Jing Jiang

IPC: H04W72/04 ,  H04W76/11 ,  H04L5/00 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may be configured with multiple control resource sets (CORESETs) within a slot. The UE may identify a set of physical downlink control channel (PDCCH) occasions to monitor within the slot, where each PDCCH occasion corresponds to a search space set for a CORESET. The UE may determine a first configuration and a second configuration for monitoring the PDCCH occasions, where the first configuration corresponds to slot-based thresholds and the second configuration corresponds to symbol-based or occasion-based thresholds for monitoring. These thresholds may specify a threshold number of PDCCH candidates to blind decode, a threshold number of non-overlapping control channel elements (CCEs) to perform channel estimation for, or both, where the threshold numbers support low latency processing at the UE. Either the configuration or the UE may enforce the thresholds.

公开(公告)号：US11038624B2

公开(公告)日：2021-06-15

申请号：US16764957

申请日：2017-11-17

Applicant: Qualcomm Incorporated ,  Kai Chen ,  Changlong Xu ,  Jing Jiang ,  Gabi Sarkis ,  Hao Xu

Inventor： Kai Chen ,  Changlong Xu ,  Jing Jiang ,  Gabi Sarkis ,  Hao Xu

IPC: H04L1/00

Abstract: A transmitting device may identify a set of bit locations of a polar code for encoding an input vector based at least in part on a reliability order of the bit locations, where the input vector includes a set of payload bits. The transmitting device may map bits of the input vector to respective bit locations of the identified set of bit locations and may apply a masking operation to a subset of bits of the input vector that is mapped to a most reliable subset of the set of bit locations. The transmitting device may perform an encoding operation according to the mapped input vector to generate a codeword for transmission. A receiving device may perform complementary operations to obtain the payload bits of the input vector. Based on the described techniques, a false alarm rate for the receiving device may be suppressed.

公开(公告)号：US11032031B2

公开(公告)日：2021-06-08

申请号：US15404072

申请日：2017-01-11

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Naga Bhushan ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  John Edward Smee ,  Krishna Kiran Mukkavilli ,  Lei Ke

IPC: H04L1/18 ,  H04L1/00 ,  H04L1/08 ,  H04L1/20

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for management of hybrid automatic repeat request (HARQ) log likelihood ratio (LLR) and reordering buffers in wireless communication systems. According to certain aspects, a method for reducing buffer overhead that may be performed by a wireless node is provided. The method generally includes receiving one or more packets of at least one of an initial transmission or a retransmission; forming one or more log likelihood ratios (LLRs) based on the one or more packets; compressing the one or more LLRs by quantizing the one or more LLRs; and buffering the one or more compressed LLRs.

公开(公告)号：US11026245B2

公开(公告)日：2021-06-01

申请号：US16125539

申请日：2018-09-07

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Tingfang Ji ,  Krishna Kiran Mukkavilli ,  Naga Bhushan ,  Joseph Binamira Soriaga ,  Chih Ping Li ,  John Edward Smee

IPC: H04W72/12 ,  H04L5/14 ,  H04L5/00

Abstract: Various aspects of the present disclosure provide for enabling at least one opportunity to transmit mission critical (MiCr) data and at least one opportunity to receive MiCr data in a time division duplex (TDD) subframe during a single transmission time interval (TTI). The single TTI may be no greater than 500 microseconds. The TDD subframe may be a downlink (DL)-centric TDD subframe or an uplink (UL)-centric TDD subframe. How much of the TDD subframe is configured for the at least one opportunity to transmit the MiCr data and how much of the TDD subframe is configured for the at least one opportunity to receive the MiCr data may be adjusted based on one or more characteristics of the MiCr data. The MiCr data may have a low latency requirement, a high priority requirement, and/or a high reliability requirement. Various other aspects are provided throughout the present disclosure.

公开(公告)号：US11019667B2

公开(公告)日：2021-05-25

申请号：US16534180

申请日：2019-08-07

Applicant: QUALCOMM incorporated

Inventor： Seyedkianoush Hosseini ,  Yi Huang ,  Linhai He ,  Chih-Ping Li ,  Peter Gaal ,  Wanshi Chen ,  Jing Jiang ,  Xiao Feng Wang ,  Tingfang Ji

IPC: H04W74/08 ,  H04W72/10 ,  H04W72/04 ,  H04W52/36 ,  H04W72/08 ,  H04L1/18

Abstract: Techniques are described herein for collision handling in uplink transmissions. A user equipment (UE) may have more information to transmit during an uplink transmission than the allocated resources can handle. The UE may identify that an uplink transmission includes a plurality of different channels. The UE may exclude service types or scale the transmit power of service types based on performing a prioritization of the different channels in the uplink transmission. In some cases, the UE may prioritize ultra-reliable low-latency communications (URLLC) service types over enhanced mobile broadband (eMBB) service types. In some cases, the content of the URLLC service types and the content of the eMBB service types may be considered when prioritizing. The UE may be capable of configuring different sets of priority rules based on reliability thresholds and latency thresholds associated with the service types.

公开(公告)号：US11005615B2

公开(公告)日：2021-05-11

申请号：US16138531

申请日：2018-09-21

Applicant: QUALCOMM Incorporated

Inventor： Chong Li ,  Junyi Li ,  Wanshi Chen ,  Jing Jiang

IPC: H04L5/00 ,  H04W4/02 ,  H04L1/18 ,  H04W52/02

Abstract: Certain aspects of the present disclosure relate to communication systems, and more particularly, to techniques for mitigating inter-cell interference for uplink ultra-reliable low latency communications (URLLC).

公开(公告)号：US11005595B2

公开(公告)日：2021-05-11

申请号：US16412237

申请日：2019-05-14

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Gabi Sarkis ,  Yang Yang ,  Ying Wang

IPC: H04L1/00 ,  H03M13/11

Abstract: A technique for hybrid automatic repeat request (HARD) transmissions using low-density parity-check (LDPC) coding with self-decodable retransmissions is disclosed. Data is encoded using a low-density parity check code to obtain encoded data, where the encoded data includes core data and non-core data. The encoded data is then stored in a buffer for transmission. A plurality of redundancy versions of the encoded data is then transmitted, wherein all redundancy versions of encoded data include core data, and each of the transmitted redundancy versions of the encoded data includes at least a different subset of the core data. The core data may be reordered prior to obtaining at least one of the different subsets of core data. Each of the transmitted redundancy versions of the encoded data includes sufficient core data to permit self-decodability of the transmission at a receiver.

公开(公告)号：US10999017B2

公开(公告)日：2021-05-04

申请号：US16574311

申请日：2019-09-18

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Jing Jiang

IPC: H04L1/18 ,  H04L1/00 ,  H04L1/16 ,  H04L1/08 ,  H04W72/04

Abstract: Methods and Apparatus are provided for downlink retransmission of Code Block Groups (CBGs) when CBG level ACK and NACK feedback is unreliable. A User Equipment (UE) transmits to a Base Station (BS) feedback indicating an Acknowledgement (ACK) or a Negative Acknowledgement (NACK) corresponding to each of received set of CBGs transmitted by the BS to the UE. The BS receives and decodes the feedback and transmits back to the UE information regarding a result of the decoding. The UE, based on the received information, determines whether the BS correctly received and decoded the ACK/NACK feedback, and in some cases, ACKs and NACKs corresponding to which CBGs were incorrectly decoded by the BS. The UE processes retransmitted CBGs received from the BS based on this determination.