公开(公告)号：US09924511B2

公开(公告)日：2018-03-20

申请号：US14861819

申请日：2015-09-22

Applicant: QUALCOMM Incorporated

Inventor： Saurabha Rangrao Tavildar ,  Junyi Li ,  Jay Rodney Walton ,  Santosh Paul Abraham

IPC: H04W72/04 ,  H04L29/08 ,  H04W76/02 ,  H04W74/08 ,  H04W84/12 ,  H04W16/14

CPC classification number: H04W72/0446 ,  H04L67/104 ,  H04W16/14 ,  H04W72/0453 ,  H04W74/0808 ,  H04W76/14 ,  H04W84/12

Abstract: Methods, systems, and devices are described for direct device-to-device (D2D) communications in a subframe on a channel in an unlicensed radio frequency spectrum band. A user equipment (UE) may perform a listen-before-talk (LBT) procedure on the channel in the unlicensed radio frequency spectrum band. The UE may identify a time period between a completion of the LBT procedure and a boundary of a second subframe. The UE may transmit a Wi-Fi preamble and a variable length message on the channel during the identified timer period. The variable length message may include a duration that is time aligned with the boundary of the second subframe.

公开(公告)号：US09906888B2

公开(公告)日：2018-02-27

申请号：US14107195

申请日：2013-12-16

Applicant: QUALCOMM Incorporated

Inventor： Feng Ge ,  Junyi Li ,  Vincent Douglas Park

IPC: H04W4/00 ,  H04W48/16 ,  H04W8/00 ,  H04W48/12 ,  H04B7/155

CPC classification number: H04W4/70 ,  H04B7/155 ,  H04W8/005 ,  H04W48/12 ,  H04W48/16

Abstract: Methods, systems, and devices are described for improving uplink communications of a machine type communication (MTC) device by relaying communications through a first device, such as a mobile device or user equipment (UE), to a second device, such as a base station or Evolved-NodeB (eNB). In an embodiment, a relay device may participate in a discovery process to discover an MTC device. The relay device may then receive data from the discovered MTC device, such as through a peer-to-peer link, and relay the data to a base station through a second communication link. In another embodiment, an MTC device may participate in a discovery process with a first device, such as a relay UE. The MTC device may then transmit data to the relay UE for relaying to a second device, such as a base station. In either case, the MTC device may receive data directly from the base station.

公开(公告)号：US20180054830A1

公开(公告)日：2018-02-22

申请号：US15659604

申请日：2017-07-25

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Juan Montojo ,  Tamer Kadous ,  Junyi Li ,  Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo ,  Siddhartha Mallik

IPC: H04W72/12 ,  H04W76/04 ,  H04W24/08

Abstract: Various aspects of the disclosure relate to event triggers for independent links. For example, an event trigger may be based on measurements from multiple links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, an event trigger may be based on aggregated measurements from multiple links.

公开(公告)号：US09900931B2

公开(公告)日：2018-02-20

申请号：US13875677

申请日：2013-05-02

Applicant: QUALCOMM Incorporated

Inventor： Bilal Sadiq ,  Qing He ,  Saurabha R. Tavildar ,  Junyi Li

IPC: H04W88/04 ,  H04W76/02

CPC classification number: H04W88/04 ,  H04W76/14

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in connection with D2D relay link selection in a LTE based access network. In one example, a communications device is equipped to determine that the communications device (e.g., a UE) is able to establish a relay link with a candidate UE based on at least one of information associated with any preexisting access links with the candidate UE, information associated with any preexisting accessing links within a threshold vicinity of the UE or the candidate UE, or any other UE UL interference, determine that the candidate UE is able to support the relay link based on information associated with preexisting access links for the candidate UE, and perform a link establishment process for the relay link with the candidate UE based on the determinations.

公开(公告)号：US20180049129A1

公开(公告)日：2018-02-15

申请号：US15389320

申请日：2016-12-22

Applicant: QUALCOMM Incorporated

Inventor： Chong Li ,  Junyi Li ,  Piyush Gupta

IPC: H04W52/02 ,  H04W72/08

CPC classification number: H04W52/0235 ,  H04W52/243 ,  H04W52/245 ,  H04W52/246 ,  H04W52/265 ,  H04W52/281 ,  H04W52/325 ,  H04W52/383 ,  H04W72/08 ,  H04W74/002 ,  H04W74/0816 ,  H04W76/14 ,  H04W88/02 ,  H04W88/08 ,  H04W92/18 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/21 ,  Y02D70/22 ,  Y02D70/23 ,  Y02D70/26

Abstract: A first device may configure a second device, such as a sidelink receiver, so that an interference protection zone surrounding the second device may be dynamically adjusted in size based, for example, on various objectives and/or use cases recognized by the first device. The interference protection zone may be, for example, an area surrounding the second device, within which neighboring devices may be silenced. Changes to the interference protection zone may be achieved by providing a dynamic clear-to-send (CTS) transmit power scaling parameter, that is different from a pre-assigned constant parameter for CTS power control stored at the second device, to the second device from the first device. The second device may calculate CTS channel power using at least the dynamic CTS transmit power scaling parameter and the received RTS channel power. The second device may send a CTS message in a CTS channel at the calculated CTS channel power.

公开(公告)号：US20180041979A1

公开(公告)日：2018-02-08

申请号：US15412362

申请日：2017-01-23

Applicant: QUALCOMM Incorporated

Inventor： Karl Georg Hampel ,  Sundar Subramanian ,  Junyi Li ,  Muhammad Nazmul Islam ,  Navid Abedini

IPC: H04W56/00 ,  H04W72/12 ,  H04W76/02 ,  H04W72/04

CPC classification number: H04W56/0005 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/12 ,  H04W76/15 ,  H04W88/02 ,  H04W88/08 ,  H04W92/045 ,  H04W92/10 ,  H04W92/20

Abstract: The use of a radio access technology (RAT) may enable wireless communication using one or more node functions at a wireless node, such as a base station or access node. Additionally, multiple wireless nodes may communicate in a network using a schedule that is aligned with a frame structure. For example, a wireless node may establish a link with different wireless nodes using a RAT that supports a synchronized frame structure, such as a millimeter wave (mmW) RAT. The wireless nodes may instantiate one or more node functions, such as an access node function (ANF) and a user equipment function (UEF). The wireless nodes may then communicate according to active and suspended modes using the node functions, where the communication is based on a schedule aligned with the frame structure.

公开(公告)号：US20180035435A1

公开(公告)日：2018-02-01

申请号：US15411917

申请日：2017-01-20

Applicant: QUALCOMM Incorporated

Inventor： Piyush Gupta ,  Junyi Li ,  Chong Li

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

CPC classification number: H04L5/0055 ,  H04L5/0023 ,  H04L5/0082 ,  H04L5/0092 ,  H04L5/14 ,  H04W72/1226

Abstract: Aspects of the present disclosure provide solutions that can mitigate interference between sidelinks. A user equipment (UE) can directly communicate with another device using a sidelink or sidelink channel without necessarily relying on a scheduling entity (e.g., a base station). The UE may transmit a direction selection signal (DSS) to another sidelink entity to indicate a requested duration of time to keep a first sidelink available for a plurality of transmission time intervals. The UE may perform various processes to mitigate interference between the first sidelink and a second sidelink established between other sidelink entities. To mitigate interference between sidelinks, for example, the UE may puncture its sidelink data during a time period that overlaps with a destination receive signal (DRS) of another sidelink. In another example, the UE may receive a retransmission of a DRS that may not be received due to sidelink interference.

公开(公告)号：US20180035427A1

公开(公告)日：2018-02-01

申请号：US15394074

申请日：2016-12-29

Applicant: QUALCOMM Incorporated

Inventor： Piyush Gupta ,  Shrinivas Kudekar ,  Junyi Li

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

CPC classification number: H04W72/0446 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/1607 ,  H04L5/0055 ,  H04L5/0057 ,  H04W72/02 ,  H04W72/0413

Abstract: Aspects of the disclosure relate to a sidelink signal communication scheme that provides for rapid adaptation of the sidelink transmission based on feedback received during each transmission time interval (TTI). In this way, any lack of precision in interference measurements, or rapid changes in the amount of interference, which otherwise might cause a modulation and coding scheme (MCS) that was selected for the sidelink transmission to be unsuitable, may be adapted to improve the reliability of the transmission. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20170367108A1

公开(公告)日：2017-12-21

申请号：US15188016

申请日：2016-06-21

Applicant: QUALCOMM Incorporated

Inventor： Hua Wang ,  Piyush Gupta ,  Junyi Li

IPC: H04W72/12 ,  H04W56/00 ,  H04W84/18

Abstract: A unified frame structure for communicating in a synchronous and slotted mesh network is provided. Nodes within the mesh network are designated as primary and secondary nodes. For each transmission, a primary node may first send scheduling information to secondary nodes associated with the primary node. The receiver of the scheduled link may send a clear-to-send signal. For uplink scheduled transmissions, the receiver is the primary node. For downlink scheduled transmissions, the receiver is a secondary node. The transmitter of the scheduled link may receive the CTS signal from one or more proximate receivers, including a receiver associated with the scheduled transmission as well as other receivers not associated with the scheduled transmission. The transmitter of the scheduled link may estimate the signal to interference-plus-noise ratio of other links that are of higher priority and may then determine whether to yield or power back off the scheduled transmission.

公开(公告)号：US20170347358A1

公开(公告)日：2017-11-30

申请号：US15663542

申请日：2017-07-28

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Juergen Cezanne ,  Sundar Subramanian ,  Ashwin Sampath ,  Junyi Li

IPC: H04W72/04 ,  H04B7/06 ,  H04B7/0456 ,  H04W72/08 ,  H04B7/08

CPC classification number: H04W72/0466 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0639 ,  H04B7/0874 ,  H04W72/085

Abstract: Methods, systems, and devices are described for wireless communication at a user equipment (UE). A wireless communications system may improve UE discovery latency by dynamically selecting and switching beam forming codebooks at the millimeter wave base station and the wireless device. Selecting an optimal beam forming codebook may allow the wireless communication system to improve link margins between the base station without compromising resources. In some examples, a wireless device may determine whether the received signals from the millimeter wave base station satisfy established signal to noise (SNR) thresholds, and select an optimal beam codebook to establish communication. Additionally or alternately, the wireless device may further signal the selected beam codebook to the millimeter wave base station and direct the millimeter wave base station to adjust its codebook based on the selection.