公开(公告)号：US10396943B2

公开(公告)日：2019-08-27

申请号：US15841278

申请日：2017-12-13

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Jing Sun ,  Shimman Arvind Patel ,  Hao Xu

IPC: H04L1/18 ,  H04W72/12 ,  H04L23/00 ,  H04W56/00 ,  H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described that identify an uplink transmission time interval (TTI) length for uplink transmissions, and a downlink TTI length for downlink transmissions, in which the uplink TTI length and the downlink TTI length may be different. The downlink TTI length may be a shortened TTI (sTTI) length, and the uplink TTI length may be longer than the downlink sTTI length. Various parameters for transmissions may be determined based on one or more of the uplink TTI length or the downlink TTI length, such as one or more of a feedback process transmission timing, a timing advance (TA) value, a transport block size (TBS), a number of spatial layers, a number of component carriers (CCs), or a channel quality information (CQI) reporting type may be determined based on one or more of the uplink TTI length or the downlink TTI length.

公开(公告)号：US20190246422A1

公开(公告)日：2019-08-08

申请号：US16390495

申请日：2019-04-22

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Shimman Arvind Patel ,  Wanshi Chen ,  Naga Bhushan ,  Yongbin Wei ,  Hao Xu ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Durga Prasad Malladi ,  Srinivas Yerramalli ,  Peter Gaal

IPC: H04W74/00 ,  H04W74/08 ,  H04L27/26 ,  H04L5/00 ,  H04L5/14 ,  H04W56/00

CPC classification number: H04W74/002 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/003 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0091 ,  H04L5/0092 ,  H04L5/14 ,  H04L27/261 ,  H04L27/2613 ,  H04W56/00 ,  H04W74/0808 ,  H04W74/0833

Abstract: Techniques are described for wireless communication. A first method includes transmitting a first signal to indicate accessing a first channel in a radio frequency spectrum band, and transmitting information with the first signal in the radio frequency spectrum band. A second method includes winning contention to access a radio frequency spectrum band, and after the winning contention to access the radio frequency spectrum band, transmitting a first signal to align a starting point of a second signal with a reference boundary associated with the radio frequency spectrum band. A third method includes winning contention to access a radio frequency spectrum band during a first frame period, the first frame selected from a plurality of different frame periods, and transmitting a signal at a periodicity during one or more subframes of the first frame period for each of the plurality of different frame periods.

公开(公告)号：US20190215827A1

公开(公告)日：2019-07-11

申请号：US16358042

申请日：2019-03-19

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Juan Montojo ,  Jing Sun ,  Seyedkianoush Hosseini

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04L1/18

CPC classification number: H04W72/0413 ,  H04L1/1861 ,  H04L5/0044 ,  H04L5/0055 ,  H04L5/14 ,  H04L5/1469 ,  H04W72/0446

Abstract: Methods, systems, and devices for wireless communication are described. Data may be received during transmission time intervals (TTIs) that have a short duration relative to other TTIs. The short-duration TTIs may occur within or overlap a longer duration TTI, such as a subframe. Feedback responsive to the data may be generated and assigned for transmission during an uplink TTI according to a feedback timing or delay, which may be selected to reduce latency or balance the payload size of uplink messages sent during the assigned uplink TTI. Data and feedback assignments in short-duration TTIs may be configured based on a time division duplexing (TDD) configuration for some TTIs (e.g., subframes). TTIs that are a Long Term Evolution (LTE) subframe, an LTE slot, and a duration of two LTE symbol periods may be supported. Portions of special TTIs may be used for transmissions according to shorter-duration TTIs.

公开(公告)号：US10314029B2

公开(公告)日：2019-06-04

申请号：US15711470

申请日：2017-09-21

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Peter Gaal ,  Wanshi Chen ,  Shimman Arvind Patel ,  Durga Prasad Malladi ,  Yongbin Wei ,  Aleksandar Damnjanovic ,  Onkar Dabeer

IPC: H04J3/00 ,  H04W72/04 ,  H04W72/14 ,  H04L1/00 ,  H04L5/00 ,  H04W88/02

Abstract: An example data structure for managing user equipment communications in a wireless communications system is presented, as well as methods and apparatuses configured to implement the data structure. For instance, the data structure may include a downlink subframe comprising two slots and including one or more quick downlink channels having a single-slot transmission time interval. In addition, the example data structure may include one or more resource element blocks each comprising one or more resource elements into which a frequency bandwidth is divided within one or both of the two slots, wherein each of the one or more resource element blocks comprises a control channel region or a data channel region. Furthermore, the example data structure may include one or more resource grants, located within one or more control channel regions, for one or more user equipment served by the one or more quick downlink channels.

公开(公告)号：US10306606B2

公开(公告)日：2019-05-28

申请号：US15592981

申请日：2017-05-11

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Yisheng Xue ,  Juan Montojo ,  Jing Sun ,  Yongbin Wei ,  Shimman Arvind Patel

IPC: H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04W72/04 ,  H04W72/12 ,  H04B17/336

Abstract: Techniques are described for wireless communication at a user equipment (UE). One method includes receiving a downlink grant for a downlink transmission; transmitting channel quality feedback at a first time triggered by receipt of the downlink grant, the first time occurring during a first transmission time interval (TTI); and transmitting acknowledgement/negative-acknowledgement (ACK/NACK) feedback for the downlink transmission at a second time triggered by receipt of the downlink grant, the second time occurring during a second TTI, and the second TTI occurring later in time than the first TTI.

公开(公告)号：US20190150140A1

公开(公告)日：2019-05-16

申请号：US16105657

申请日：2018-08-20

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Seyedkianoush Hosseini ,  Wanshi Chen

IPC: H04W72/04 ,  H04L1/00 ,  H04W72/14 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communications are described. To satisfy a (block error rate) BLER target for a transmission of a transport block while limiting latency (e.g., keeping latency within a latency budget), base stations and user equipments (UEs) may support techniques for utilizing repetition-based transmissions of the transport block in combination with hybrid automatic repeat request (HARQ) retransmissions of the transport block. That is, base stations and UEs may support techniques for transmitting multiple repetitions (i.e., copies) of the transport block without first receiving HARQ feedback, in addition to retransmitting one or more copies of the transport block when a receiving device fails to successfully decode at least one of the originally transmitted copies of the transport block (as indicated through HARQ feedback).

公开(公告)号：US20180376464A1

公开(公告)日：2018-12-27

申请号：US16015062

申请日：2018-06-21

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Shimman Arvind Patel

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00 ,  H04W76/27

Abstract: Communications data having a reliability and latency threshold may be transmitted within a legacy downlink control channel. For example, a user equipment (UE) may utilize low latency services, such as ultra-reliable low latency communications (URLLC). In such cases, a base station may transmit URLLC data in a legacy physical downlink control channel (PDCCH) of a downlink transmission time interval. The UE may determine that the PDCCH includes downlink data. The downlink data may have a delay tolerance below the threshold level (e.g., URLLC data), and the determination may be based on a downlink control information (DCI) payload within the received PDCCH. The UE may then receive the downlink data within the PDCCH. In some examples, the downlink data may be received within the DCI payload. Additionally or alternatively, the DCI payload may provide an indication of resources within the PDCCH that are utilized for carrying the downlink data.

公开(公告)号：US10117246B2

公开(公告)日：2018-10-30

申请号：US14529997

申请日：2014-10-31

Applicant: QUALCOMM Incorporated

Inventor： Tingfang Ji ,  Peter Gaal ,  Yongbin Wei ,  Hao Xu ,  Wanshi Chen ,  Tao Luo ,  Durga Prasad Malladi ,  Naga Bhushan ,  Aleksandar Damnjanovic ,  Shimman Arvind Patel

IPC: H04W36/00 ,  H04W48/20 ,  H04W72/04 ,  H04W88/10

Abstract: Techniques are described for wireless communication. One method includes determining that a cell operates in a shared access radio frequency spectrum, and transmitting signaling information to a mobile device indicating that the cell is prohibited from serving as a primary serving cell based at least in part on the determination that the cell operates in the shared access radio frequency spectrum. Another method includes receiving signaling information at a mobile device from a base station indicating that a cell operating in a shared access radio frequency spectrum is prohibited from serving as a primary serving cell, and identifying the cell as prohibited from serving as a primary serving cell based at least in part on the received signaling information. Another method includes identifying, by a mobile device, a cell operating in a shared access radio frequency spectrum as a secondary serving cell based at least in part on information stored on the mobile device.

公开(公告)号：US10104683B2

公开(公告)日：2018-10-16

申请号：US14993592

申请日：2016-01-12

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Durga Prasad Malladi ,  Peter Gaal ,  Yongbin Wei ,  Hao Xu ,  Shimman Arvind Patel ,  Aleksandar Damnjanovic

IPC: H04W72/12 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A receiving device may detect a signal associated with low latency transmissions and decode a non-low latency communication accordingly. The receiving device may receive an indicator from a transmitting device that indicates where and when low latency communications occur. The indication may specify frequency resources or symbols used by the low latency communication. The indicator may be transmitted during the same subframe as the low latency communication, at the end of a subframe, or during a subsequent subframe. The receiving device may use the indicator to mitigate low latency interference, generate channel estimates, and reliably decode the non-low latency communication. In some cases, the interfering low latency communication may occur within the serving cell of the receiving device; or the interfering low latency communication may occur in a neighboring cell.

公开(公告)号：US20180270880A1

公开(公告)日：2018-09-20

申请号：US15925698

申请日：2018-03-19

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Peter Gaal ,  Alberto Rico Alvarino ,  Hao Xu ,  Jing Sun ,  Shimman Arvind Patel

IPC: H04W76/11 ,  H04W76/27 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communication are described. Wireless communications systems as described herein may be configured to support several service types with different latency, reliability, or throughput rates or standards. One such service type may be referred to as ultra-reliable, low-latency communications (URLLC). Enhancements to improve URLLC performance in coexistence with and as a complement to legacy service types, such as LTE are described. These include, for example, enhanced timing resource allocations, enhanced transmission repetition schemes, enhanced feedback mechanisms, or a combination of these features to achieve certain reliability and latency targets.