公开(公告)号：US10791556B2

公开(公告)日：2020-09-29

申请号：US16383182

申请日：2019-04-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L5/00 ,  H04W16/14 ,  H04W40/24 ,  H04W74/08 ,  H04W88/02 ,  H04W88/08 ,  H04L1/00

Abstract: Techniques are described for wireless communication. A first method includes winning a contention for access to an unlicensed radio frequency spectrum band, and transmitting at least a portion of a channel usage beacon signal (CUBS) over the unlicensed radio frequency spectrum band. The at least portion of the CUBS is transmitted in a number of frequency interlaces of the unlicensed radio frequency spectrum band. A second method includes winning a contention for access to an unlicensed radio frequency spectrum band; determining whether the contention is won within a threshold time before a next symbol period boundary; and transmitting at least a portion of a CUBS over the unlicensed radio frequency spectrum band. The at least portion of the CUBS is transmitted during a preamble including a fractional period of a first symbol period. The at least portion of the CUBS may be based at least in part on the determining.

公开(公告)号：US10743338B2

公开(公告)日：2020-08-11

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: H04W72/12 ,  H04L5/00 ,  H04L1/08 ,  H04L1/18 ,  H04L1/16 ,  H04L1/00 ,  H04W76/11 ,  H04W76/27 ,  H04W72/04 ,  H04L5/14

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.

公开(公告)号：US20200214019A1

公开(公告)日：2020-07-02

申请号：US16816404

申请日：2020-03-12

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Shimman Arvind Patel ,  Peter GAAL ,  Hao XU ,  Yongbin WEI ,  Madhavan Srinivasan VAJAPEYAM ,  Aleksandar DAMNJANOVIC

IPC: H04W72/10 ,  H04L1/00 ,  H04W72/12 ,  H04W72/04 ,  H04W72/00 ,  H04L5/00

Abstract: Various aspects described herein relate to receiving a first communication over a first set of resources based on a first transmission time interval (TTI), receiving a second communication over a second set of resources based on a second TTI, where the second TTI is smaller than the first TTI, and where the second set of resources overlap the first set of resources defining a common set of resources, and determining whether to prioritize decoding of the first communication over the second communication.

公开(公告)号：US10660074B2

公开(公告)日：2020-05-19

申请号：US15955323

申请日：2018-04-17

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Shimman Arvind Patel ,  Aleksandar Damnjanovic

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W72/14 ,  H04L1/00 ,  H04W76/27 ,  H04L1/18 ,  H04L25/02

Abstract: Various aspects described herein relate to communicating in a wireless network. A resource grant comprising an indicator of whether to transmit a demodulation reference signal (RS) for an uplink control channel or an uplink data channel can be received from a network entity. It can be determined whether to transmit the RS in at least one transmission time interval (TTI) based at least in part on the indicator.

公开(公告)号：US10609726B2

公开(公告)日：2020-03-31

申请号：US15925683

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: H04W72/12 ,  H04W76/11 ,  H04L5/00 ,  H04L1/08 ,  H04L1/18 ,  H04L1/16 ,  H04L1/00 ,  H04W76/27 ,  H04W72/04 ,  H04L5/14

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.

公开(公告)号：US10602489B2

公开(公告)日：2020-03-24

申请号：US15439613

申请日：2017-02-22

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Wanshi Chen ,  Shimman Arvind Patel

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/14 ,  H04W48/12

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a resource allocation associated with a low latency time interval (TTI). The low latency TTI may be a two-symbol TTI. The UE may transmit, responsive to the resource allocation, a two-symbol TTI that includes a demodulation reference signal (DM-RS) symbol and a data symbol. In some cases, the two-symbol TTI may precede the transmission of another two-symbol TTI from the same UE that includes data and excludes DM-RS. In some cases, the two-symbol TTI includes DM-RS from another UE. In such cases, data from the other UE may be transmitted in a subsequent two-symbol TTI.

公开(公告)号：US10548118B2

公开(公告)日：2020-01-28

申请号：US15592850

申请日：2017-05-11

Applicant: QUALCOMM Incorporated

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

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

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：US10447457B2

公开(公告)日：2019-10-15

申请号：US15648159

申请日：2017-07-12

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Seyedkianoush Hosseini ,  Peter Gaal ,  Jing Sun ,  Shimman Arvind Patel

IPC: H04L5/00 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communication are described that provide for identifying uplink transmissions that are to be made using shortened transmission time intervals (sTTIs), and allocating uplink resources for such transmissions. A portion of the uplink resources may be reserved for reference signal transmissions, such as demodulation reference signal (DMRS) transmissions. Resources for a number of sTTIs may be aligned within a slot that comprises a number of orthogonal frequency division multiplexing (OFDM) symbols, and one of the OFDM symbols may have resources reserved that are to be shared by two or more sTTIs within the slot for DMRS transmission. The reserved OFDM symbol may be shared by two overlapping sTTIs in which the reserved OFDM symbol is common between the two sTTIs. A DMRS sequence for each sTTI may be selected based on the allocated uplink resources for the sTTIs.

公开(公告)号：US10440728B2

公开(公告)日：2019-10-08

申请号：US15624980

申请日：2017-06-16

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Peter Gaal ,  Wanshi Chen ,  Shimman Arvind Patel ,  Ozcan Ozturk

IPC: H04W72/12 ,  H04W72/00

Abstract: Various aspects relate to determining whether one or more subframes are multicast-broadcast single-frequency network (MBSFN) subframes. A user equipment (UE) can receive, from a base station, a system information broadcast signal that includes an indication of one or more subframes as MBSFN subframes, and a subsequent system information broadcast signal that indicates at least scheduling information for a multicast control channel (MCCH) in at least a portion of the one or more subframes. The UE can determine, based at least in part on the indication or on the subsequent system information broadcast signal, a numerology for a physical multicast channel (PMCH) corresponding to the MCCH in at least the portion of the one or more subframes, and can process at least the portion of the one or more subframes based at least in part on the scheduling information or the numerology for the PMCH.

公开(公告)号：US10433339B2

公开(公告)日：2019-10-01

申请号：US15090859

申请日：2016-04-05

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Aleksandar Damnjanovic

IPC: H04W74/00 ,  H04W74/08

Abstract: Wireless devices may exchange data related to multiple available random access procedures for network access. A random access procedure of the available random access procedures may be selected, and a random access message transmitted based on the selected random access procedure. Available random access procedures may include procedures that provide for a different number of random access messages or that are for use in communications having different transmission time intervals (TTIs). For example, a random access procedure may include a total of two random access messages or a total of four random access messages for accessing the wireless communications network. The use of one random access procedure instead of the other may depend on a wireless device's location relative to its serving base station.