公开(公告)号：US20200266937A1

公开(公告)日：2020-08-20

申请号：US16783983

申请日：2020-02-06

Applicant: QUALCOMM Incorporated

Inventor： Mostafa KHOSHNEVISAN ,  Jing SUN ,  Xiaoxia ZHANG

IPC: H04L1/18 ,  H04W24/08 ,  H04L5/00 ,  H04W72/04

Abstract: This disclosure provides systems, methods and apparatus for wireless communication. In one aspect, a multi-transmit-receive point (TRP) approach for hybrid automatic repeat request (HARD) acknowledgment (ACK) feedback using counter downlink assignment indicators (DAIs) (cDAIs) and total DAIs (tDAIs) is provided. For example, some techniques and apparatuses described herein may provide a joint counting method in which cDAIs and tDAIs are implemented and tracked jointly between the TRPs of a multi-TRP group. This may be useful in the ideal backhaul scenario when the multi-TRP group is jointly scheduled, and may be more robust against errors than a separate counting method. Some techniques and apparatuses described herein may provide a separate counting method, in which cDAIs and tDAIs are implemented and tracked separately by the respective TRPs of a multi-TRP group.

公开(公告)号：US20200252846A1

公开(公告)日：2020-08-06

申请号：US16776276

申请日：2020-01-29

Applicant: QUALCOMM Incorporated

Inventor： Ozcan OZTURK ,  Jing SUN ,  Xiaoxia ZHANG ,  Rajat PRAKASH

IPC: H04W36/08 ,  H04W16/14 ,  H04W36/38 ,  H04W74/08

Abstract: A configuration to enable a UE to obtain access to an unlicensed frequency channel of the unlicensed frequency spectrum in the event of channel access failures. The apparatus receives a configuration from a first base station to perform a conditional handover. The apparatus determines a first unlicensed frequency channel is unavailable for a transmission to the first base station or from the first base station. The apparatus switches from the first unlicensed frequency channel to a second cell for communication through the second cell in the conditional handover upon receiving the configuration and upon determining that the first unlicensed frequency channel is unavailable for the transmission.

公开(公告)号：US20200245368A1

公开(公告)日：2020-07-30

申请号：US16738672

申请日：2020-01-09

Applicant: QUALCOMM Incorporated

Inventor： Sony AKKARAKARAN ,  Xiaoxia ZHANG ,  Tao LUO ,  Jing SUN ,  Muhammad Nazmul ISLAM

IPC: H04W74/08 ,  H04L1/18 ,  H04L1/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a transport block that includes one or more code blocks carrying a random access channel (RACH) communication directed to the UE. The transport block may be segmented into the one or more code blocks based at least in part on a segmentation procedure specific to a RACH procedure. The user equipment may decode the one or more code blocks based at least in part on a code block cyclic redundancy check (CRC) associated with the one or more code blocks. Numerous other aspects are provided.

公开(公告)号：US20200229239A1

公开(公告)日：2020-07-16

申请号：US16737293

申请日：2020-01-08

Applicant: QUALCOMM Incorporated

Inventor： Zhifei FAN ,  Xiaoxia ZHANG ,  Tao LUO ,  Arumugam CHENDAMARAI KANNAN ,  Jing SUN

IPC: H04W74/08 ,  H04W72/12 ,  H04W72/04 ,  H04L5/00

Abstract: Wireless communications systems and methods related to transmitting communication signals are provided. A first wireless communication device performs a first LBT during a first time period for transmitting a first communication signal associated with a first priority. The first wireless communication device performs a second LBT during a second time period for transmitting a second communication signal associated with a second priority, wherein the first time period is at least partially overlapping with the second time period, and wherein the first priority is different from the second priority. The first wireless communication device communicates with a second wireless communication device, at least one of the first communication signal or the second communication signal based on at least one of the first LBT or the second LBT.

公开(公告)号：US20200229182A1

公开(公告)日：2020-07-16

申请号：US16722851

申请日：2019-12-20

Applicant: QUALCOMM Incorporated

Inventor： Mostafa KHOSHNEVISAN ,  Xiaoxia ZHANG ,  Jing SUN ,  Tao LUO ,  Arumugam CHENDAMARAI KANNAN ,  Vinay CHANDE ,  Makesh Pravin JOHN WILSON

IPC: H04W72/04 ,  H04L1/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a first hybrid automatic repeat request (HARQ) process identifier set associated with a first configured scheduling process and may determine a second HARQ process identifier set associated with a second configured scheduling process. The UE may assign an HARQ process identifier, included in the first HARQ process identifier set, to a process instance associated with the first configured scheduling process and may assign an HARQ process identifier, included in the second HARQ process identifier set, to a process instance associated with the second configured scheduling process. Numerous other aspects are provided.

公开(公告)号：US20200228252A1

公开(公告)日：2020-07-16

申请号：US16828739

申请日：2020-03-24

Applicant: QUALCOMM Incorporated

Inventor： Jay Kumar SUNDARARAJAN ,  Sony AKKARAKARAN ,  Jing SUN ,  Wanshi CHEN ,  Hao XU ,  Jing JIANG

IPC: H04L1/18 ,  H04L1/14 ,  H04L1/16

Abstract: Aspects of the present disclosure provide various hybrid automatic repeat request (HARQ) retransmission indication schemes used in a HARQ retransmission process. The HARQ retransmission indication can implicitly or explicitly indicate which part of a transport block (TB), code block group(s), or code block(s) is/are being retransmitted so that the receiver can associate the retransmitted TB, code block group(s), code block(s) with the correct prior reception, for example, for HARQ combining purposes

公开(公告)号：US20200221432A1

公开(公告)日：2020-07-09

申请号：US16735431

申请日：2020-01-06

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo PARK ,  Makesh Pravin JOHN WILSON ,  Tao LUO ,  Jing SUN ,  Xiaoxia ZHANG ,  Arumugam CHENDAMARAI KANNAN ,  Vinay CHANDE ,  Mostafa KHOSHNEVISAN

IPC: H04W72/04 ,  H04L5/00 ,  H04L1/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a first transmit receive point (TRP), a downlink control information (DCI) communication, the UE being included in a multi-TRP configuration with the first TRP and a second TRP. The UE may determine information unique to the first TRP. The information unique to the first TRP may be at least one of associated with the DCI communication or included in the DCI communication. The UE may generate a downlink scrambling sequence initialization code, associated with the first TRP, based at least in part on the information unique to the first TRP. The UE may generate a downlink scrambling sequence, associated with the first TRP, based at least in part on the downlink scrambling sequence initialization code associated with the first TRP. Numerous other aspects are provided.

公开(公告)号：US20200221392A1

公开(公告)日：2020-07-09

申请号：US16733756

申请日：2020-01-03

Applicant: QUALCOMM Incorporated

Inventor： Yisheng XUE ,  Aleksandar DAMNJANOVIC ,  Xiaoxia ZHANG ,  Jing SUN ,  Yongbin WEI

IPC: H04W52/28 ,  H04W16/14 ,  H04W74/08

Abstract: A periodic quiet interval is provided for base stations attempting to access a shared transmission medium in NR-U. The base station activates a quiet interval at a periodic interval and transmits on the medium based on the quiet interval. The base station may reduce a Tx power, not transmit, and/or may increase a minimum value of a contention window for BEB during the quiet interval. The base station may receive a request from a second base station to activate the quiet interval, and may determine if a Tx power of the base station is larger than the maximum Tx power of the second base station. The base station may also receive the request as relayed through a UE. The quiet interval can thus ameliorate a starvation effect of BEB in NR-U by allowing base stations with smaller Tx power greater opportunity to control the medium while maintaining BEB in NR-U.

公开(公告)号：US20200154308A1

公开(公告)日：2020-05-14

申请号：US16739455

申请日：2020-01-10

Applicant: QUALCOMM Incorporated

Inventor： Jing SUN ,  Jing JIANG ,  Hao XU

IPC: H04W28/04 ,  H04L1/16 ,  H04L1/18 ,  H04W28/06

Abstract: Aspects of the present disclosure provide a code block group (CBG) based HARQ retransmission process in which HARQ retransmission is performed based on CBG units. The CBG based HARQ process uses a CBG failure mask that can reduce the signaling overhead of CBG-based HARQ retransmissions. A base station can determine the error CBGs from different UEs that share a slot, and generate a CBG failure mask that capture all the CBGs NACKs from the UEs.

公开(公告)号：US20200100225A1

公开(公告)日：2020-03-26

申请号：US16580162

申请日：2019-09-24

Applicant: QUALCOMM Incorporated

Inventor： Mostafa KHOSHNEVISAN ,  Jing SUN ,  Xiaoxia ZHANG

IPC: H04W72/04 ,  H04L1/18

Abstract: Certain aspects of the present disclosure provide techniques for rate-matching for a transmission by multiple transmission configuration indicator (TCI) states, such as a multiple transmission reception point (multi-TRP) transmission. A method by a user equipment (UE) includes receiving one downlink control information (DCI) scheduling a downlink transmission associated with multiple transmission configuration indicator (TCI) states. The UE determines whether the downlink transmission is associated with one rate matching or is associated with a separate rate matching for each of the multiple TCI states. The UE derate matches the downlink transmission based on the determination.