公开(公告)号：US09844072B2

公开(公告)日：2017-12-12

申请号：US14839678

申请日：2015-08-28

Applicant: QUALCOMM Incorporated

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

IPC: H04L12/26 ,  H04W72/14 ,  H04L1/18 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04L1/16 ,  H04L25/02 ,  H04L1/00 ,  H04W88/02

CPC classification number: H04W72/14 ,  H04L1/0003 ,  H04L1/0031 ,  H04L1/0088 ,  H04L1/1671 ,  H04L1/1685 ,  H04L1/1812 ,  H04L1/1861 ,  H04L1/1887 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0078 ,  H04L5/0092 ,  H04L5/0096 ,  H04L25/0224 ,  H04L27/2601 ,  H04W72/0413 ,  H04W88/02

Abstract: Various aspects described herein relate to communicating in a wireless network. An uplink resource grant can be received from a network entity for communicating in the wireless network. A transmission time interval (TTI) for an uplink transmission within a subframe based on the uplink resource grant can be determined, wherein the TTI comprises one or more symbols which are a subset of a plurality of symbols in the subframe. Communications can be transmitted to the network entity over resources specified in the uplink resource grant during the TTI.

公开(公告)号：US20170353278A1

公开(公告)日：2017-12-07

申请号：US15684558

申请日：2017-08-23

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Tao Luo

IPC: H04L5/00 ,  H04L27/00 ,  H04W72/04 ,  H04W16/14

CPC classification number: H04L5/0048 ,  H04L27/0006 ,  H04W16/14 ,  H04W72/0453

Abstract: Techniques are described for wireless communication. In one method, a positioning reference signal (PRS) may be generated. The PRS may be configured in at least one downlink subframe among a plurality of downlink subframes. The PRS may be transmitted in the at least one downlink subframe using an unlicensed radio frequency spectrum band.

公开(公告)号：US09801147B2

公开(公告)日：2017-10-24

申请号：US14552127

申请日：2014-11-24

Applicant: QUALCOMM Incorporated

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

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

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：US20170289992A1

公开(公告)日：2017-10-05

申请号：US15439613

申请日：2017-02-22

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Wanshi Chen ,  Shimman Arvind Patel

IPC: H04W72/04 ,  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：US09774429B2

公开(公告)日：2017-09-26

申请号：US14577783

申请日：2014-12-19

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Tao Luo

IPC: H04L5/00 ,  H04W72/04 ,  H04L27/00 ,  H04W16/14

CPC classification number: H04L5/0048 ,  H04L27/0006 ,  H04W16/14 ,  H04W72/0453

Abstract: Techniques are described for wireless communication. In one method, a positioning reference signal (PRS) may be generated. The PRS may be configured in at least one downlink subframe among a plurality of downlink subframes. The PRS may be transmitted in the at least one downlink subframe using an unlicensed radio frequency spectrum band.

公开(公告)号：US20170265166A1

公开(公告)日：2017-09-14

申请号：US15365539

申请日：2016-11-30

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Peter Gaal ,  Shimman Arvind Patel ,  Juan Montojo ,  Aleksandar Damnjanovic

IPC: H04W72/00 ,  H04W8/18 ,  H04W76/04 ,  H04W24/08 ,  H04W72/04 ,  H04L27/26

CPC classification number: H04W72/005 ,  H04L27/2601 ,  H04W8/186 ,  H04W24/08 ,  H04W72/042 ,  H04W72/0446 ,  H04W76/28

Abstract: Techniques for low latency point to multipoint (PTM) communications in a system supporting communications using multiple different transmission time interval (TTI) durations are provided. The low latency PTM communications may be supported by one or more physical channels that support PTM communications at shortened TTI durations. In some examples, a base station may allocate, in a PTM traffic channel, a first set of resources for PTM transmissions with a first user equipment (UE) and a second UE, and may allocate a second set of resources (e.g., in a physical downlink shared channel (PDSCH)) for unicast transmissions to the first UE. The PTM transmissions may be transmitted using TTIs configured with durations shorter than TTIs used for transmitting unicast transmissions. Different sets of PTM resources may be allocated for different PTM transmissions having different TTI durations.

公开(公告)号：US20170215186A1

公开(公告)日：2017-07-27

申请号：US15293664

申请日：2016-10-14

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0446 ,  H04L5/001 ,  H04L5/003 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/006 ,  H04L5/0064 ,  H04L27/2602 ,  H04L27/2608 ,  H04W72/042 ,  H04W72/0453

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device configured for carrier aggregation may communicate using transport blocks (TBs) mapped according to a wideband configuration that includes resources of multiple component carriers (CCs) within a single, low latency transmission time interval (TTI)—e.g., a TTI that has a shorter duration relative to other TTIs used in the same system. The number of CCs, and thus bandwidth, available for mapping each TB may change dynamically based on the configuration of the CCs. For a CC configured with a control region during a given low latency TTI, a TB sent during that low latency TTI may not be mapped to resources of that CC. In other cases, portions of a CC configured with a control region may be used for wideband configurations. Wideband low latency communications may be used on the uplink or downlink communications, or both.

公开(公告)号：US09509486B2

公开(公告)日：2016-11-29

申请号：US14807069

申请日：2015-07-23

Applicant: QUALCOMM Incorporated

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

IPC: H04J3/00 ,  H04L5/14 ,  H04L27/26 ,  H04L27/20 ,  H04W74/00

CPC classification number: H04L5/14 ,  H04L27/20 ,  H04L27/2607 ,  H04W74/006 ,  H04W74/04

Abstract: The present disclosure, for example, relates to one or more techniques for indicating a frame format for transmissions using unlicensed radio frequency spectrum bands. A UE may receive, from a base station, a frame format indicator associated with a transmission opportunity for transmissions in an unlicensed radio frequency spectrum band. The UE may determine a time-division duplexing (TDD) configuration for the transmission opportunity based at least in part on the frame format indicator.

Abstract translation: 本公开例如涉及一种或多种用于指示使用未许可射频频带的传输的帧格式的技术。 UE可以从基站接收与未许可的射频频带中的传输的传输机会相关联的帧格式指示符。 UE可以至少部分地基于帧格式指示符来确定用于传输机会的时分双工（TDD）配置。

公开(公告)号：US20160338046A1

公开(公告)日：2016-11-17

申请号：US15099364

申请日：2016-04-14

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Shimman Arvind Patel ,  Peter Gaal ,  Hao Xu

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

CPC classification number: H04L5/0048 ,  H04W72/1268

Abstract: Methods, systems, and devices for wireless communication are described. A base station may select, and a user equipment (UE) may identify, an initial symbol of a transmission time interval (TTI) based on a particular characteristic of a communication link between the base station and UE. A two-symbol TTI for one UE may thus be scheduled to align with or complement a longer TTI for another UE. For instance, the initial symbol of a two-symbol TTI may be restricted to certain symbol periods of a Long Term Evolution (LTE) subframe to limit interference with other transmissions scheduled during the subframe (e.g., reference signals, control channels, guard periods, etc.). Additionally or alternatively, a UE may identify and blindly decode control channel transmissions for low latency communications by assuming a presence of reference signals within the symbols that include a low latency control channel.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 基站可以基于基站和UE之间的通信链路的特定特性来选择用户设备（UE）来识别传输时间间隔（TTI）的初始符号。 因此，可以调度一个UE的双符号TTI以与另一UE对准或补充更长的TTI。 例如，双符号TTI的初始符号可以被限制到长期演进（LTE）子帧的某些符号周期，以限制在子帧期间调度的其他传输的干扰（例如，参考信号，控制信道，保护周期， 等等。）。 另外或替代地，UE可以通过假设在包括低等待时间控制信道的符号内存在参考信号来识别并盲目地解码用于低等待时间通信的控制信道传输。

公开(公告)号：US20160309518A1

公开(公告)日：2016-10-20

申请号：US15090859

申请日：2016-04-05

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Aleksandar Damnjanovic

IPC: H04W74/08

CPC classification number: H04W74/0833 ,  H04W74/002 ,  H04W74/0891

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.

Abstract translation: 无线设备可以交换与用于网络接入的多个可用随机接入过程相关的数据。 可以选择可用随机接入过程的随机接入过程，以及基于所选择的随机接入过程发送的随机接入消息。 可用的随机接入过程可以包括提供不同数量的随机接入消息或用于具有不同传输时间间隔（TTI）的通信中的过程）。 例如，随机接入过程可以包括总共两个随机接入消息或总共四个用于接入无线通信网络的随机接入消息。 使用一个随机接入过程而不是另一个随机接入过程可以取决于无线设备相对于其服务基站的位置。