公开(公告)号：US20200351030A1

公开(公告)日：2020-11-05

申请号：US16800768

申请日：2020-02-25

Applicant: QUALCOMM Incorporated

Inventor： Pravjyot Singh Deogun ,  Xiaoxia Zhang ,  Ozcan Ozturk ,  Kapil Bhattad

IPC: H04L1/18 ,  H04W74/08 ,  H04W72/14 ,  H04W16/14 ,  H04L5/00

Abstract: Techniques are described herein for improved methods, systems, devices, and apparatuses that support procedures for configured grants. Generally, the described techniques may relate to restricting a number of retransmissions used during a hybrid automatic repeat request (HARQ) process or managing potential scheduling conflicts for the HARQ process from dynamic grants and configured grants. A device (e.g., a user equipment) may initiate a timer or a counter associated with a HARQ process for indicating that transmission attempts for the HARQ process are permitted. The device may identify a transmission occasion of a configured grant in an unlicensed frequency spectrum band that is associated with the HARQ process and may determine that the timer associated with the HARQ process is active. The device may perform a transmission attempt over the transmission occasion of the configured grant based on determining that the timer is active.

公开(公告)号：US20200344738A1

公开(公告)日：2020-10-29

申请号：US16926204

申请日：2020-07-10

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Kapil Bhattad ,  Jing Sun

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

Abstract: Certain aspects of the present disclosure relate to a method and apparatus for receiving a medium occupation and a resource block group (RBG) size from a gNB, wherein the radio block group size is based on a bandwidth part (BWP) configuration. In one example, UEs with smaller BWP have finer granularity in RBG size in terms of PRBs, while UEs with larger BWP may have a coarser granularity in RBG size in terms of PRBs. An additional guard band may be used if the gNB reserves some channels such that not all of the BW is occupied. For example, if the gNB reserves the 20 MHz channel, it may perform better by adding additional guard band on each side of the 20 MHz bandwidth to accommodate an adjacent channel leakage-power ratio (ACLR). Another aspect of the present disclosure relates to assigning a UE an interlace with equally spaced PRBs.

公开(公告)号：US20200322989A1

公开(公告)日：2020-10-08

申请号：US16841278

申请日：2020-04-06

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Jing Sun ,  Xiaoxia Zhang ,  Pravjyot Deogun

IPC: H04W74/08 ,  H04W72/04

Abstract: The described techniques provide for efficiently contending for access to a shared radio frequency spectrum for communicating on multiple allocated sub-bands across multiple carriers. As described herein, a user equipment (UE) may first identify allocated sub-bands across multiple carriers in a shared radio frequency spectrum. The UE may then select a carrier and at least one of the multiple allocated sub-bands within the carrier on which to perform a listen-before-talk (LBT) procedure of a first type, and the UE may perform the LBT procedure of the first type on the at least one sub-band. In addition, the UE may also perform LBT procedures of a second type on allocated sub-bands within carriers different from the selected carrier. Based on the results of the LBT procedures, the UE may communicate with the base station on the allocated sub-bands across the multiple carriers in the shared radio frequency spectrum.

公开(公告)号：US20200314899A1

公开(公告)日：2020-10-01

申请号：US16804581

申请日：2020-02-28

Applicant: QUALCOMM INCORPORATED

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Kapil Bhattad

IPC: H04W74/08 ,  H04W72/14 ,  H04W72/12 ,  H04L5/10 ,  H04L5/00

Abstract: Wireless communications systems and methods related to sharing a channel occupancy time (COT) associated with a scheduled UL transmission in a frequency spectrum shared by multiple network operating entities are provided. A first wireless communication device communicates, with a second wireless communication device, a first uplink (UL) scheduling grant. The first wireless communication device communicates, with second wireless communication device, a first UL communication signal based on the first UL scheduling grant during a first COT, the first COT based on an extended clear channel assessment (eCCA) associated with the first UL communication signal. The first wireless communication device communicates, with the second wireless communication device, a downlink (DL) communication signal during the first COT based on COT sharing information associated with the first COT.

公开(公告)号：US20200314871A1

公开(公告)日：2020-10-01

申请号：US16814759

申请日：2020-03-10

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Kapil Bhattad ,  Xiaoxia Zhang ,  Tanumay Datta ,  Ananta Narayanan Thyagarajan

IPC: H04W72/12 ,  H04W24/10 ,  H04L5/00 ,  H04W74/08 ,  H04W72/04 ,  H04W76/27

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for group reference signal triggering for contention-based systems. The described techniques may enable a network node to trigger a group of one or more user equipments (UEs) to transmit a reference signal to the network node. The network node may transmit a group common control channel indicating timing information or configuration information corresponding to a set of resources for the transmission of the reference signal. The one or more UEs may transmit the reference signal according to the timing information or configuration information.

公开(公告)号：US20200313816A1

公开(公告)日：2020-10-01

申请号：US16819543

申请日：2020-03-16

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Kapil Bhattad ,  Tanumay Datta

IPC: H04L5/00 ,  H04W74/08 ,  H04W16/14 ,  H04W72/04 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communications are described for managing sounding reference signal (SRS) transmissions in shared radio frequency spectrum. Described techniques provide for increased occasions at which a SRS may be transmitted, enhance likelihood of a successful listen-before-talk (LBT) procedure, or any combinations thereof. Increased occasions for SRS may be provided through multiple transmission times that are available in the event of an earlier LBT failure. Enhanced likelihood of successful LBT may be provided through one or more timing offsets that may be randomly selected from a set of available timing offsets, selection of a cyclic prefix length for a SRS based on whether the SRS transmission is within or outside of a channel occupancy time of a base station, providing an initial SRS transmission time for an initial periodic time interval, triggering of an aperiodic SRS within the channel occupancy time, or any combinations thereof.

公开(公告)号：US20200252821A1

公开(公告)日：2020-08-06

申请号：US16777618

申请日：2020-01-30

Applicant: QUALCOMM Incorporated

Inventor： Pravjyot Singh Deogun ,  Xiaoxia Zhang ,  Ozcan Ozturk ,  Jing Sun ,  Kapil Bhattad ,  Ananta Narayanan Thyagarajan

IPC: H04W24/10 ,  H04W72/04 ,  H04W16/14

Abstract: Design of robust radio link monitoring framework for unlicensed spectrum is disclosed. The network may configured two different types of radio link monitoring (RLM) reference signal (RS) resources: default resources, which are transmitted throughout a connection, and additional resources, which may be transmitted only when there has been failure of transmission or reception of the default resources. Various criteria may be used by the network to trigger scheduling transmission of the additional RLM-RS. Moreover, different criteria may prompt a user equipment (UE) to begin monitoring the additional RLM-RS resources, including autonomous and network-initiated criteria.

公开(公告)号：US10701671B2

公开(公告)日：2020-06-30

申请号：US16143179

申请日：2018-09-26

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Ananta Narayanan Thyagarajan ,  Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W72/12 ,  H04W88/02 ,  H04W88/10 ,  H04W92/10 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communications are described. One method may include determining symbol level scheduling for symbols allocated to a plurality of user equipments (UEs) within a transmission time interval (TTI); transmitting, in a control channel of the TTI, control information indicating the symbol level scheduling; and communicating, in accordance with the symbol level scheduling, the symbols within the TTI in a plurality of beamformed transmissions. Another method may include receiving, by a UE, control information in a control channel of a TTI; processing the control information to determine a subset of symbols of the TTI allocated to the UE, a symbol length or duration of the subset of the symbols allocated to the UE, and symbol level scheduling for the subset of the symbols within the TTI; and receiving the subset of the symbols based on the control information.

公开(公告)号：US10674522B2

公开(公告)日：2020-06-02

申请号：US15718418

申请日：2017-09-28

Applicant: QUALCOMM Incorporated

Inventor： Xiao feng Wang ,  Alberto Rico Alvarino ,  Kapil Bhattad ,  Hao Xu

IPC: H04W72/12 ,  H04L1/18 ,  H04L5/00 ,  H04W28/06 ,  H04L1/16 ,  H04W76/27 ,  H04L27/18 ,  H04W88/02

Abstract: The present disclosure may support dedicated scheduling request resources in a NPUSCH format resource structure, a NPRACH, and/or an ACK/NACK transmission associated with a downlink transmission received at the UE. In addition, the present disclosure may provide various techniques to mitigate collisions between scheduling requests transmitted by a UE, uplink transmissions sent by different UEs, and/or downlink transmissions sent by a base station. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may receive one or more downlink transmissions from a base station. The apparatus may determine to transmit an uplink transmission to the base station. The apparatus transmit, to the base station, a scheduling request for the uplink transmission with an ACK/NACK associated with the one or more downlink transmissions using a narrowband NPUSCH format resource structure.

公开(公告)号：US10594452B2

公开(公告)日：2020-03-17

申请号：US15211050

申请日：2016-07-15

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Peter Gaal ,  Tao Luo ,  Xiaoxia Zhang ,  Juan Montojo

IPC: H04L5/00 ,  H04L1/06 ,  H04L27/26 ,  H04W72/04

Abstract: In a wireless communication system, from available data resource elements (REs) in a subframe, REs are assigned to transmissions of a reference signal, thereby resulting in a plurality of remaining data REs. Furthermore, REs from the plurality of remaining data REs are assigned for data transmission to a wireless device in groups of a predetermined number of REs such that all assigned data REs within a group are within a predetermined number of symbols of each other in time domain and within a second predetermined number of subcarriers of each other in frequency domain, thereby resulting in at least one ungrouped RE.