公开(公告)号：US11329769B2

公开(公告)日：2022-05-10

申请号：US16930177

申请日：2020-07-15

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Xiaoxia Zhang ,  Maarten Menzo Wentink ,  Marco Papaleo ,  Jing Sun ,  Pravjyot Singh Deogun

IPC: H04L1/18 ,  H04W74/08

Abstract: Techniques for a node to adjust or update its CW are provided. The node transmits at least one transmission during a channel occupancy time (COT). The node can determine or adjust a contention window (CW) size following the end of COT based on whether feedback for a transmission is received or could be scheduled during the COT.

公开(公告)号：US20210099258A1

公开(公告)日：2021-04-01

申请号：US17027213

申请日：2020-09-21

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Jing Sun ,  Pravjyot Singh Deogun

IPC: H04L1/18 ,  H04W72/04 ,  H04W72/14 ,  H04W76/11 ,  H04W72/12 ,  H04W76/27

Abstract: Enhancements to downlink feedback information (DFI) signaling is disclosed. According to the disclosed aspects, indications of DFI presence in downlink control information (DCI) messaging are provided that limit any increase to DCI overhead for uplink grants. In a first aspect, DFI presence may be signaled using unused or disallowed DCI variable states for indication of DFI presence. In another aspect, a separate bit may be added to a DCI message for indicating DFI presence. Additional aspects include repurposing DCI fields which are specific to cell radio network temporary identifier (C-RNTI)-based uplink grants, or may defining a new RNTI (e.g., DFI-RNTI) for indicating DFI presence. Further aspects may provide for radio resource control (RRC) signaling that configures which DCI variable state can be used to indicate DFI presence.

公开(公告)号：US20210058976A1

公开(公告)日：2021-02-25

申请号：US17093374

申请日：2020-11-09

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08

Abstract: Random access channel access and validity procedures are disclosed. In one aspect, the medium access control (MAC) indications multiple random access occasions (ROs) to user equipments (UEs) for random access transmissions. In such aspect, random access failure would only be declared if listen before talk (LBT) procedures for the random access transmission fail on all of the ROs indicated by the MAC layer. Similarly, in additional aspects, a UE will not apply a backoff value for any LBT failures for random access attempts that occur within an LBT time window. In further aspects, a UE may determine the validity of ROs that overlap with a discovery reference signal measurement timing configuration (DMTC) window. In such aspects, the UE may not use overlapping ROs or may determine a portion of the DMTC window that is not used for base station transmissions and declare the overlapping ROs with the unused portion valid.

公开(公告)号：US20210022179A1

公开(公告)日：2021-01-21

申请号：US16928278

申请日：2020-07-14

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W16/14 ,  H04W56/00 ,  H04W24/08 ,  H04B17/318 ,  H04W76/11 ,  H04W68/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. The method may include receiving, from a base station over an unlicensed radio frequency spectrum band, a broadcast message including system information, the system information indicating a LBT mode of the base station and a set of random access channel resources associated with a fixed frame period, monitoring a wireless channel of the unlicensed radio frequency spectrum band during the fixed frame period for control information from the base station based on the indicated LBT mode, determining, based on the monitoring, that the base station has access to the wireless channel during the fixed frame period, and performing, based on the determining, a random access channel transmission during the fixed frame period using the set of random access channel resources.

公开(公告)号：US20200267771A1

公开(公告)日：2020-08-20

申请号：US16742558

申请日：2020-01-14

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W72/04 ,  H04B17/318

Abstract: Frequency division multiplex (FDM) random access configuration and selection is disclosed for new radio (NR) unlicensed (NR-U) operations. For idle mode user equipment (UEs), the network may configured multiple frequency bands for random access. The UE may then select different frequencies for random access when default frequencies experience interference. For connected mode UEs, the network may configured which of multiple configured frequency bands the connected UE may use for autonomous random access transmissions. The UE may then select any of the allowed frequency bands for autonomous random access. Contention-free random access resources may be configured on one or more of the multiple configured frequency bands. When contention-free resources are available, the UEs may initially attempt access of the contention-free resources on the default frequency band before attempting random access on other configured bands or the UE is provided a priority of bands for access by the network.

公开(公告)号：US20200260487A1

公开(公告)日：2020-08-13

申请号：US16783964

申请日：2020-02-06

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W74/08 ,  H04W72/04 ,  H04W48/16 ,  H04L5/00 ,  H04W76/27 ,  H04W72/14

Abstract: Wireless communications systems and methods related to listen-before-talk (LBT) mode and/or transmission gap signaling for back-to-back grants and/or multi-transmission time interval (multi-TTI) grants are provided. In one embodiment, a first wireless communication device communicates, with a second wireless communication device, a scheduling grant indicating a gap period within a scheduled period. The first wireless communication device communicates, with the second wireless communication device during the scheduled period, a first communication signal including a silence period corresponding to the gap period. In one embodiment, a first wireless communication device communicates, with a second wireless communication device, a first scheduling grant indicating a first scheduled period and a second scheduling grant indicating a second scheduled period spaced apart from the first scheduled period. The first wireless communication device communicates, with the second wireless communication device based on an LBT mode determined based on the first scheduling grant and the second scheduling grant.

公开(公告)号：US12119994B2

公开(公告)日：2024-10-15

申请号：US16948603

申请日：2020-09-24

Applicant: QUALCOMM Incorporated

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

IPC: H04L41/0869 ,  H04B7/06 ,  H04L1/08 ,  H04L1/1812 ,  H04L5/00 ,  H04L41/0803 ,  H04W72/0446 ,  H04W74/04

CPC classification number: H04L41/0869 ,  H04B7/0621 ,  H04L1/08 ,  H04L1/1816 ,  H04L5/0055 ,  H04L41/0803 ,  H04W72/0446 ,  H04W74/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a plurality of slot-aggregated physical uplink shared channel (PUSCH) transmissions associated with a common transport block; receive a dynamic feedback information (DFI) transmission that includes hybrid automatic repeat request (HARQ) feedback associated with the plurality of slot-aggregated PUSCH transmissions, wherein the HARQ feedback is a HARQ acknowledgement (ACK) or a HARQ negative acknowledgement (NACK); determine whether one or more PUSCH transmissions, of the plurality of slot-aggregated PUSCH transmissions, satisfy a delay condition associated with receipt of the DFI transmission; and determine whether the HARQ feedback is valid based at least in part on whether the one or more PUSCH transmissions satisfy the delay condition. Numerous other aspects are provided.

公开(公告)号：US11979902B2

公开(公告)日：2024-05-07

申请号：US16922448

申请日：2020-07-07

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/566 ,  H04W72/1268 ,  H04W72/23 ,  H04W74/0808

CPC classification number: H04W72/569 ,  H04W72/1268 ,  H04W72/23 ,  H04W74/0808

Abstract: Certain aspects of the present disclosure provide techniques for high priority data scheduling in uplink bursts. Aspects provide a method that may be performed by a user equipment (UE). The method generally includes receiving one or more uplink grants scheduling a plurality of transmission occasions for the UE. The method generally includes performing a listen-before-talk (LBT) procedure to attempt to acquire a channel for transmitting in at least one of the plurality of transmission occasions. The method generally includes determining one or more of the plurality of transmission occasions to transmit data based, at least in part, on the LBT procedure.

公开(公告)号：US11758580B2

公开(公告)日：2023-09-12

申请号：US16991643

申请日：2020-08-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/0446 ,  H04W72/23 ,  H04W72/56

CPC classification number: H04W74/0808 ,  H04W72/0446 ,  H04W72/23 ,  H04W72/56 ,  H04W74/006 ,  H04W74/008

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that indicates a number of bits to be used in an indication of at least one of a listen-before-talk (LBT) category or a channel access priority class to be used for uplink communications. The UE may receive the indication of at least one of the LBT category or the channel access priority class to be used for a transmission starting point associated with one or more uplink communications, wherein the indication includes the number of bits indicated in the configuration. The UE may perform an LBT procedure for an uplink communication, of the one or more uplink communications, transmitted at the transmission starting point, according to the LBT category or the channel access priority class. Numerous other aspects are provided.

公开(公告)号：US11683697B2

公开(公告)日：2023-06-20

申请号：US17814960

申请日：2022-07-26

Applicant: QUALCOMM Incorporated

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

IPC: H04W16/14 ,  H04W72/0446 ,  H04W72/23 ,  H04W74/00 ,  H04W76/27

CPC classification number: H04W16/14 ,  H04W72/0446 ,  H04W72/23 ,  H04W74/006 ,  H04W76/27

Abstract: Wireless communications systems and methods related to configured transmissions in a shared radio frequency band are provided. A user equipment (UE) receives, from a base station (BS), an indication of a first configured resource in a shared radio frequency band for a communication in a first direction. The UE receives, from the BS, a first configuration to select between a validation of the first direction or an absence of an invalidation of the first direction for using the first configured resource for the communication. The UE communicates, with the BS, the communication in the first direction using the first configured resource based on the first configuration.