公开(公告)号：US20180041977A1

公开(公告)日：2018-02-08

申请号：US15789889

申请日：2017-10-20

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Tao Luo ,  Naga Bhushan ,  Peter Gaal ,  Hao Xu

IPC: H04W56/00 ,  H04W16/14 ,  H04W72/04 ,  H04W88/08 ,  H04W74/08 ,  H04W84/04 ,  H04W28/08

CPC classification number: H04W56/001 ,  H04W16/14 ,  H04W28/08 ,  H04W72/0426 ,  H04W72/0446 ,  H04W74/0808 ,  H04W84/042 ,  H04W88/08

Abstract: Methods, systems, and devices are described for wireless communication. One method may include receiving, at a first base station, at least one clear channel assessment (CCA)-exempt transmission (CET) indicating timing information of at least a second base station over a shared spectrum. A timing of the first base station may be adjusted based on the received timing information of the second base station. Another method of wireless communication may include identifying a CCA slot assigned to a first base station for a frame, which may be associated with time synchronization, of a shared spectrum. A CCA may be performed at the identified CCA slot for the frame. When the CCA is successful, a first timing information of the first base station may be selectively transmitted during the frame. When the CCA is unsuccessful, a second timing information of a second base station may be listened for during the frame.

公开(公告)号：US20180014301A1

公开(公告)日：2018-01-11

申请号：US15642104

申请日：2017-07-05

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Seyedkianoush Hosseini ,  Peter Gaal ,  Srinivas Yerramalli ,  Hao Xu ,  Jing Sun ,  Shimman Arvind Patel ,  Aamod Khandekar

IPC: H04W72/04 ,  H04L5/00 ,  H04W76/04 ,  H04L1/18 ,  H04W88/02

CPC classification number: H04W72/0446 ,  H04L1/1812 ,  H04L1/1861 ,  H04L5/00 ,  H04L5/0048 ,  H04W72/0413 ,  H04W72/042 ,  H04W76/27 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communication are described that provide for reduced timing between certain downlink communications and responsive uplink communications relative to certain legacy systems (e.g., legacy LTE systems). A user equipment (UE) or base station may be capable of operating using two or more timing configurations that each include an associated time period between receipt of a downlink communication (e.g., a grant of uplink resources or shared channel data) and a responsive uplink communication (e.g., an uplink transmission using the granted uplink resources or feedback of successful reception of the shared channel data). In cases where a UE or base station are capable of two or more timing configurations, a timing configuration for a transmission may be determined and the responsive uplink communication transmitted according to the determined timing configuration.

公开(公告)号：US20170332373A1

公开(公告)日：2017-11-16

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 ,  H04L1/18 ,  H04L5/14

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：US20170332369A1

公开(公告)日：2017-11-16

申请号：US15473188

申请日：2017-03-29

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush HOSSEINI ,  Shimman Arvind Patel ,  Wanshi Chen ,  Jing Sun ,  Peter Gaal ,  Juan Montojo

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0413 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0055 ,  H04L5/0064

Abstract: Various aspects described herein relate to communicating uplink control information (UCI) in low-latency communications. A resource assignment is received from an access point to transmit over a first symbol and a second symbol that comprise a first TTI, wherein the resource assignment includes, at least for the first symbol, an indication of one or more consecutive frequency resources in a system bandwidth based on a decimation factor. A reference signal is transmitted in the first TTI over the first symbol and a data signal indicating UCI over the second symbol according to the resource assignment.

公开(公告)号：US09807779B2

公开(公告)日：2017-10-31

申请号：US14962871

申请日：2015-12-08

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Shimman Arvind Patel ,  Madhavan Srinivasan Vajapeyam

IPC: H04W4/00 ,  H04W72/08 ,  H04W72/04 ,  H04W24/02 ,  H04L5/00

CPC classification number: H04W72/085 ,  H04L5/001 ,  H04L5/0094 ,  H04L5/0098 ,  H04W24/02 ,  H04W72/0453

Abstract: Various aspects described herein relate to managing ultra low latency (ULL) communications over a plurality of component carriers (CC). A configuration for aggregating a set of CCs can be received, wherein the set of CCs includes at least a primary cell and a secondary cell. Based on the received configuration, at least the primary cell can be communicated with for legacy communications, wherein the legacy communications are based on a first transmission time interval (TTI) having a first duration. Based on the received configuration, the primary cell and the secondary cell can be communicated with for ULL communications, wherein the ULL communications are based on a second TTI having a second duration that is less than the first duration.

公开(公告)号：US09794922B2

公开(公告)日：2017-10-17

申请号：US14836183

申请日：2015-08-26

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 ,  H04W88/02 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L1/00 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0064 ,  H04W72/0446 ,  H04W72/14 ,  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：US20170264466A1

公开(公告)日：2017-09-14

申请号：US15441092

申请日：2017-02-23

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Juan Montojo ,  Shimman Arvind Patel ,  Hao Xu

IPC: H04L25/02 ,  H04L5/00 ,  H04B17/345 ,  H04L27/26

CPC classification number: H04L25/0256 ,  H04B1/1036 ,  H04B17/345 ,  H04J11/004 ,  H04J11/005 ,  H04L5/0048 ,  H04L25/021 ,  H04L25/022 ,  H04L25/0236 ,  H04L25/03159 ,  H04L27/2601

Abstract: Noise and interference may be estimated at a user equipment (UE) in a system that may support transmissions having different transmission time intervals (TTIs). The UE may perform a channel estimation for a first set of transmissions having a first TTI based at least in part on an estimated interference from a second set of transmissions having a second TTI that is shorter than the first TTI. The UE may perform channel estimation for orthogonal frequency division multiplexing (OFDM) symbols of the first set of transmissions. The first set of transmissions may then be demodulated based at least in part on the channel estimation for the first set of transmissions. Noise and interference may also be estimated based on one or more null tones within one or more OFDM symbols of the allocated resources.

公开(公告)号：US20170111160A1

公开(公告)日：2017-04-20

申请号：US15191452

申请日：2016-06-23

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Shimman Arvind Patel ,  Juan Montojo ,  Hao Xu ,  Aleksandar Damnjanovic

IPC: H04L5/14 ,  H04L1/18 ,  H04L27/26 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04L5/14 ,  H04L1/1812 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2613 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/085

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may identify an uplink/downlink (UL/DL) configuration that defines subframe configuration options for each subframe of a frame. For example, the UL/DL configuration may establish parameters for time division duplexing (TDD) operation between a base station and a user equipment (UE). The wireless device (e.g., the UE or base station) may determine a constraint for a subframe of the frame based on the UL/DL configuration and then determine an adaptive subframe configuration based on the constraint. The adaptive subframe configuration may include one or several downlink symbol periods and one or several uplink symbol periods. The wireless device may then communicate during the subframe according to the adaptive subframe configuration rather than the original UL/DL configuration; and, because the adaptive subframe may be constrained by the identified UL/DL configuration, the communication during the subframe may avoid disruption to UEs.

公开(公告)号：US20170063514A1

公开(公告)日：2017-03-02

申请号：US15189971

申请日：2016-06-22

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/14 ,  H04W72/04 ,  H04W76/04 ,  H04L1/18

CPC classification number: H04L5/14 ,  H04L1/1812 ,  H04L5/0092 ,  H04L5/1469 ,  H04W72/0406 ,  H04W76/27 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may identify multiple regions within a subframe, such as one or more uplink regions, one or more downlink regions, and a guard region. The wireless device may identify and communicate during each region based on a timing relationship between the downlink region and the uplink region. For example, the device may expect hybrid automated repeat request (HARQ) feedback for one downlink region in the same subframe based on the proximity to the next uplink region. Another downlink region may not have HARQ feedback in the same subframe. Similarly, uplink regions may or may not be scheduled within the same subframe.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 无线设备可以识别子帧内的多个区域，诸如一个或多个上行链路区域，一个或多个下行链路区域和保护区域。 无线设备可以基于下行链路区域和上行链路区域之间的定时关系在每个区域中识别和通信。 例如，设备可以基于与下一个上行链路区域的接近度，期望相同子帧中的一个下行链路区域的混合自动重传请求（HARQ）反馈。 另一下行链路区域可能在同一子帧中不具有HARQ反馈。 类似地，上行链路区域可以在或不在同一子帧内被调度。

公开(公告)号：US20160337087A1

公开(公告)日：2016-11-17

申请号：US15081597

申请日：2016-03-25

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Shimman Arvind Patel ,  Aleksandar Damnjanovic

IPC: H04L1/18 ,  H04W72/12

CPC classification number: H04L1/1861 ,  H04L1/1822

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a downlink transmission from a base station, transmit a first stage of feedback for the downlink transmission, identify a condition associated with the downlink transmission, and determine whether to transmit a second stage of feedback for the downlink transmission based at least in part on the identified condition associated with the downlink transmission. The second stage of feedback for the downlink transmission may be transmitted (or not transmitted) based at least in part on the identified condition associated with the downlink transmission.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 用户设备（UE）可以从基站接收下行链路传输，发送用于下行链路传输的第一级反馈，识别与下行链路传输相关联的条件，并且确定是否发送用于下行链路传输的第二级反馈 至少部分地基于与所述下行链路传输相关联的所识别的条件。 至少部分地基于与下行链路传输相关联的识别条件，可以发送（或不发送）用于下行链路传输的第二级反馈。