公开(公告)号：US20180227011A1

公开(公告)日：2018-08-09

申请号：US15884161

申请日：2018-01-30

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Chih-Hao Liu ,  Tamer Kadous

IPC: H04B1/7156 ,  H04B1/7083 ,  H04B1/7087 ,  H04B1/7143

Abstract: Described techniques provide for transmission of synchronization signals using frequency hopping across a number of hopping frequencies in unlicensed or shared radio frequency spectrum. A base station may identify a set of hop frequencies for transmitting synchronization signals, and transmit synchronization signals using a hopping pattern over the hop frequencies. A user equipment (UE) seeking to identify the base station may monitor one or more of the hop frequencies to identify one or more synchronization signals on the hop frequency. A system timing may be identified in some cases, and one or more base station IDs may be identified. In some cases, a hop frequency may be monitored for a duration that may span the transmission of two or more synchronization signals of a particular base station, based on a periodicity of synchronization signal transmissions on each hop frequency.

公开(公告)号：US20180054832A1

公开(公告)日：2018-02-22

申请号：US15659592

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 ,  H04W72/04 ,  H04W72/08

Abstract: Various aspects of the disclosure relate to feedback for independent links. For example, channel state feedback may be based on the channel state of 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). In some scenarios, channel state information (CSI) feedback may take into account the CSI-reference signals (CSI-RSs) from multiple links. For example, CSI feedback may be based on CSI-RSs from multiple links if the antenna sub-arrays for the links are close to one another. As another example, a decision as to whether CSI feedback is to be based on CSI-RSs from multiple links may depend on channel conditions.

公开(公告)号：US20180054811A1

公开(公告)日：2018-02-22

申请号：US15659576

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: H04W72/04 ,  H04W72/12

Abstract: Various aspects of the disclosure relate to communicating control information for independent links. For example, control information for one link may be sent via at least one other link. 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). In some scenarios, one link may carry control information for multiple links. For example, one link may indicate the existence of or traffic on at least one other link. As another example, one link may transmit feedback for multiple links. In some scenarios, each link may be provisioned (e.g., as a primary link or a secondary link) to carry specific types of control information for one or more links.

公开(公告)号：US20180054780A1

公开(公告)日：2018-02-22

申请号：US15633376

申请日：2017-06-26

Applicant: QUALCOMM Incorporated

Inventor： Andrei Dragos Radulescu ,  Alexei Yurievitch Gorokhov ,  Chengjin Zhang ,  Chirag Sureshbhai Patel ,  Tamer Kadous

IPC: H04W52/02 ,  H04W72/12 ,  H04W24/02

CPC classification number: H04W52/0219 ,  H04W24/02 ,  H04W52/0216 ,  H04W68/02 ,  H04W72/12 ,  H04W72/1257 ,  H04W76/28 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/12 ,  Y02D70/1242 ,  Y02D70/126 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/20 ,  Y02D70/21 ,  Y02D70/24

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) and a base station operating in unlicensed spectrum may temporarily increase a paging opportunity window (POW) size, or reduce a time between POWs, in order to meet performance metrics or account for time periods when a base station is unable to win access to the wireless medium during a POW. In some cases, a UE may identify a failed listen-before-talk procedure and autonomously update the POW size. In other examples, a base station may initiate a change in POW size or increase a number of paging opportunities in order to meet achieve one or more key performance indicators (KPIs). After a predetermined period, or after a triggering condition is no longer present, the UE and the base station may reset the POW size or the number of paging opportunities to a nominal amount to conserve power.

公开(公告)号：US20180054348A1

公开(公告)日：2018-02-22

申请号：US15659598

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: H04L12/24 ,  H04W72/08 ,  H04L5/00

CPC classification number: H04L45/16 ,  H03M13/09 ,  H04B7/0626 ,  H04B7/0691 ,  H04B7/216 ,  H04B17/24 ,  H04B17/318 ,  H04L1/1854 ,  H04L5/003 ,  H04L5/0053 ,  H04L5/0094 ,  H04L12/1827 ,  H04L12/185 ,  H04L41/0668 ,  H04L2001/0093 ,  H04W24/02 ,  H04W24/04 ,  H04W24/08 ,  H04W48/08 ,  H04W52/146 ,  H04W52/16 ,  H04W52/241 ,  H04W52/243 ,  H04W52/346 ,  H04W52/386 ,  H04W52/42 ,  H04W52/50 ,  H04W52/54 ,  H04W52/56 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/044 ,  H04W72/0493 ,  H04W72/08 ,  H04W72/12 ,  H04W72/1252 ,  H04W72/1278 ,  H04W72/1284 ,  H04W76/19 ,  H04W76/22 ,  H04W92/20

Abstract: Various aspects of the disclosure relate to beam information for independent links. For example, beam information for one link may be sent on at least one other link. 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, one link can indicate beam switching for at least one other link. In some scenarios, one link can indicate link recovery for at least one other link. In some scenarios, one link can indicate link failure for at least one other link.

公开(公告)号：US20170311346A1

公开(公告)日：2017-10-26

申请号：US15492457

申请日：2017-04-20

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Chirag Patel ,  Tao Luo ,  Tamer Kadous

IPC: H04W74/00 ,  H04L5/00 ,  H04W72/14 ,  H04W16/14 ,  H04W72/04

CPC classification number: H04W74/006 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0051 ,  H04L5/0055 ,  H04W16/14 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/14 ,  H04W74/0808

Abstract: Methods, systems, and devices for wireless communication are described. A downlink control message type used for triggering uplink transmissions may convey additional information, including timing for uplink transmissions. The type or format of the control channel (e.g., physical downlink control channel (PDCCH) type or format) used to trigger an uplink transmission may also indicate a starting time or a time period, or both for the uplink transmission. In some cases, downlink control information (DCI) may indicate the function of a downlink control message that includes the DCI. Additionally, system information identified in a downlink control message may be used to determine a subframe length which, in some examples, may be used to determine whether or how long to monitor a discovery reference signal (DRS) subframe.

公开(公告)号：US20170311316A1

公开(公告)日：2017-10-26

申请号：US15493099

申请日：2017-04-20

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Andrei Dragos Radulescu ,  Chirag Patel ,  Tao Luo ,  Tamer Kadous

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

CPC classification number: H04W72/0446 ,  H04L5/0048 ,  H04W16/14 ,  H04W48/16 ,  H04W68/00 ,  H04W72/10

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may monitor for discovery reference signal (DRS) transmissions, physical downlink shared channel (PDSCH) transmissions, or combinations thereof within a DRS transmission window. The UE may attempt to decode DRS or PDSCH transmissions for a subframe based on detection of DRS transmissions, prioritization of DRS transmissions relative to PDSCH transmissions, locations of subframes within a radio frame, overlapping of the DRS transmission window with a paging opportunity, or any combination thereof. In some cases, one or more radio link monitoring (RLM) parameters may be adjusted based on decoding of PDSCH or DRS transmissions.

公开(公告)号：US08971823B2

公开(公告)日：2015-03-03

申请号：US14134528

申请日：2013-12-19

Applicant: QUALCOMM Incorporated

Inventor： Dhananjay Ashok Gore ,  Hemanth Sampath ,  Jibing Wang ,  Tamer Kadous ,  Gwendolyn D. Barriac

IPC: H04B1/00 ,  H04B7/04 ,  H04L1/00 ,  H04L1/06 ,  H04L5/02 ,  H04L27/26 ,  H04L25/02

CPC classification number: H04B7/0456 ,  H04L1/0016 ,  H04L1/0026 ,  H04L1/0675 ,  H04L5/023 ,  H04L25/0206 ,  H04L27/2602 ,  H04L27/2608

Abstract: Techniques to enhance the performance in a wireless communication system using segments called subbands and using precoding are shown. According to one aspect, the bandwidth for transmission to an access terminal is constrained to a preferred bandwidth which is less than the bandwidth available for transmission to an access terminal and precoding information related to the subcarriers within the constrained bandwidth is provided to a transmitter. The precoding information related to the subcarriers within a constrained bandwidth provides feedback about the forward link channel properties relative to different subbands and may be fed back on a channel associated with the bandwidth.

Abstract translation: 示出了使用称为子带并使用预编码的段来增强在无线通信系统中的性能的技术。 根据一个方面，用于传输到接入终端的带宽被限制到比可用于传输到接入终端的带宽的优选带宽，并且将与受限带宽内的子载波相关的预编码信息提供给发射机。 与受限带宽内的子载波相关的预编码信息提供关于相对于不同子带的前向链路信道属性的反馈，并且可以在与带宽相关联的信道上反馈。