公开(公告)号：US20180242223A1

公开(公告)日：2018-08-23

申请号：US15679034

申请日：2017-08-16

Applicant: QUALCOMM Incorporated

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

IPC: H04W48/08 ,  H04W74/08

CPC classification number: H04W48/08 ,  H04W16/14 ,  H04W16/28 ,  H04W48/12 ,  H04W48/16 ,  H04W48/18 ,  H04W56/001 ,  H04W74/008 ,  H04W74/0833 ,  H04W84/042 ,  H04W88/02

Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes receiving an instance of a discovery reference signal (DRS) on a beam over a shared radio frequency spectrum band; determining a public land mobile network identifier (PLMN ID) based at least in part on a time-frequency location of the instance of the DRS; and selectively performing a random access procedure based at least in part on the determined PLMN ID. A method for wireless communication at a base station includes transmitting an instance of a DRS on a beam over a shared radio frequency spectrum band; and transmitting a PLMN ID based at least in part on a time-frequency location of the DRS.

公开(公告)号：US20180241526A1

公开(公告)日：2018-08-23

申请号：US15899060

申请日：2018-02-19

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W16/14 ,  H04W74/08 ,  H04W56/00

CPC classification number: H04L5/0048 ,  H04B7/04 ,  H04B7/0695 ,  H04L27/0006 ,  H04W16/14 ,  H04W56/0005 ,  H04W74/0833

Abstract: Methods, systems, and devices for wireless communication are described that involve determining multiple beamformed transmission beams for transmission of an opportunistic or multi-beam discovery reference signal (DRS) over a shared radio frequency spectrum band. The base station may determine a contention exempt transmission (CET) period for the shared spectrum band and transmit the DRS using multiple transmission beams during CET period or the base station may perform a listen before talk (LBT) procedure, and transmit, based on the LBT procedure, the DRS over a shared radio frequency spectrum band. The base station may transmit an indication of the type of DRS transmission, a subframe offset, random access configurations, and/or error correcting codes to enable a user equipment to discover, connect to, and acquire timing information associated with the network.

公开(公告)号：US20180159926A1

公开(公告)日：2018-06-07

申请号：US15688239

申请日：2017-08-28

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Arumugam Chendamarai Kannan

IPC: H04L29/08 ,  H04W40/04 ,  H04W72/04 ,  H04W72/08 ,  H04W56/00 ,  H04W88/04

CPC classification number: H04L67/1085 ,  H04W40/04 ,  H04W56/0015 ,  H04W56/0025 ,  H04W72/042 ,  H04W72/082 ,  H04W88/04

Abstract: Opportunistic synchronization block transmission for millimeter (mm) wave (mmW) new radio (NR) shared spectrum (NR-SS) is disclosed. In the shared spectrum operations, additional opportunities for synchronization signaling are provided by piggy backing a single shot, opportunistic synchronization (sync) block onto the directional beam used for transmitting a data burst to a served user equipment. Instead of transmitting a whole sync slot, which includes sync blocks for each directional beam available at the participating mmW base station, the existing directional beam of the data burst is leveraged for transmitting the opportunistic sync block for that direction. The opportunistic sync block provides initial acquisition UEs with opportunity to obtain network access information, including timing and random access opportunities, for obtaining access to the network.

公开(公告)号：US20180146480A1

公开(公告)日：2018-05-24

申请号：US15814764

申请日：2017-11-16

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Chirag Sureshbhai Patel ,  Tamer Kadous

IPC: H04W72/04 ,  H04W72/12 ,  H04W16/14

CPC classification number: H04W72/0453 ,  H04W16/14 ,  H04W72/0413 ,  H04W72/1268 ,  H04W72/14 ,  H04W74/0833

Abstract: Disclosed techniques provide for different uplink resource allocation schemes in transmissions that use different shared radio frequency spectrum bands. In some cases, the different shared radio frequency spectrum bands may have different transmission characteristics or parameters, and associated resource allocation schemes may be selected to provide transmissions that are more likely to comply with the transmission characteristics or parameters associated with a particular band. In some cases, resource allocation types may be identified based on one band and mapped to identify uplink resources for an uplink transmission on a different shared radio frequency spectrum band.

公开(公告)号：US20170346605A1

公开(公告)日：2017-11-30

申请号：US15604326

申请日：2017-05-24

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Chirag Patel ,  Tao Luo

IPC: H04L1/18 ,  H04W72/04 ,  H04W16/14

CPC classification number: H04L1/1874 ,  H04L1/1614 ,  H04L1/1685 ,  H04L1/1835 ,  H04W16/14 ,  H04W72/0413

Abstract: Methods, systems, and devices for wireless communication are described. Wireless communications systems operating in unlicensed or shared radio frequency spectrum band may use different modes to manage hybrid automatic repeat request (HARQ) feedback. HARQ feedback may be transmitted autonomously or, in some cases, HARQ feedback may be solicited from a user equipment (UE) for one or several HARQ processes. Solicited feedback may be referred to as polled feedback and autonomous feedback may be referred to as unpolled feedback. Polled and unpolled feedback may be transmitted using different physical channels, and may be grant-based or triggered without an express grant. Buffers for polled and unpolled feedback may be separately maintained and managed. In a multicarrier configuration, uplink control information (UCI) for one or more carriers may be transmitted on a subset of configured uplink carriers. A number of carriers used for UCI may depend on operating conditions of a UE.

公开(公告)号：US20160330630A1

公开(公告)日：2016-11-10

申请号：US15141398

申请日：2016-04-28

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Siddhartha Mallik ,  Xiaoxia Zhang ,  Jing Sun ,  Arumugam Chendamarai Kannan

IPC: H04W16/14 ,  H04W72/04 ,  H04W72/08 ,  H04L1/00 ,  H04W48/16 ,  H04W24/10 ,  H04L5/00 ,  H04W72/12

CPC classification number: H04W16/14 ,  H04L1/0003 ,  H04L1/16 ,  H04L1/1861 ,  H04L5/0033 ,  H04L5/0048 ,  H04L5/0055 ,  H04L5/0057 ,  H04L5/0073 ,  H04W24/10 ,  H04W48/16 ,  H04W72/0453 ,  H04W72/085 ,  H04W72/1284

Abstract: Methods, systems, and devices are described for wireless communication. A device may use enhanced reporting mechanisms to support control information reporting on shared spectrum. In some cases, a device may utilize enhanced component carriers (eCCs) for data transmissions. In one example, the device may transmit control information (e.g., ACK/NACK, CSI, etc.) to a corresponding device using a CCA exempt transmission (CET). In another example, a device may report control information quasi-periodically. For instance, a device may be assigned a specified interval and a control feedback window for reporting control information (e.g., CSI). The window may provide a duration prior and subsequent to the specified interval during which a UE may transmit control information. For example, the device may perform a CCA reserving the channel for a duration that does not include the specified interval but may transmit feedback information based on determining the specified interval falls within the assigned window.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 设备可以使用增强的报告机制来支持关于共享频谱的控制信息报告。 在一些情况下，设备可以利用增强的分量载波（eCC）进行数据传输。 在一个示例中，设备可以使用CCA豁免传输（CET）向对应的设备发送控制信息（例如，ACK / NACK，CSI等）。 在另一示例中，设备可以准周期性地报告控制信息。 例如，可以向设备分配指定的间隔和用于报告控制信息（例如，CSI）的控制反馈窗口。 窗口可以在UE可以发送控制信息的指定间隔之前和之后提供持续时间。 例如，设备可以执行CCA在不包括指定间隔的持续时间内保留该信道，但是可以基于确定指定的间隔落入分配的窗口内来发送反馈信息。

公开(公告)号：US20160119948A1

公开(公告)日：2016-04-28

申请号：US14869152

申请日：2015-09-29

Applicant: QUALCOMM Incorporated

Inventor： Jelena Damnjanovic ,  Taesang Yoo ,  Siddhartha Mallik ,  Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan ,  Madhavan Srinivasan Vajapeyam ,  Durga Prasad Malladi ,  Yongbin Wei ,  Tao Luo

IPC: H04W72/12 ,  H04L1/18 ,  H04L5/14

CPC classification number: H04W72/1294 ,  H04L1/1812 ,  H04L5/0044 ,  H04L5/0055 ,  H04L5/0094 ,  H04L5/14 ,  H04W72/1289 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communication are described. A base station may employ a multiplexing configuration based on latency and efficiency considerations. The base station may transmit a resource grant, a signal indicating the length of a downlink (DL) transmission time interval (TTI), and a signal indicating the length of a subsequent uplink (UL) TTI to one or more user equipment (UEs). The base station may dynamically select a new multiplexing configuration by, for example, setting the length of an UL TTI to zero or assigning multiple UEs resources in the same DL TTI. Latency may also be reduced by employing block feedback, such as block hybrid automatic repeat request (HARQ) feedback. A UE may determine and transmit HARQ feedback for each transport block (TB) of a set of TBs, which may be based on a time duration of a downlink TTI.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 基站可以采用基于延迟和效率考虑的复用配置。 基站可以向一个或多个用户设备（UE）发送资源许可，指示下行链路（DL）传输时间间隔（TTI）的长度的信号以及指示后续上行链路（UL）TTI的长度的信号， 。 基站可以通过例如将UL TTI的长度设置为零或者在相同的DL TTI中分配多个UE资源来动态地选择新的复用配置。 还可以通过采用块反馈来减少延迟，诸如块混合自动重传请求（HARQ）反馈。 UE可以为一组TB的每个传输块（TB）确定和发送HARQ反馈，其可以基于下行链路TTI的持续时间。

公开(公告)号：US20160119920A1

公开(公告)日：2016-04-28

申请号：US14862997

申请日：2015-09-23

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Jelena Damnjanovic ,  Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan ,  Yongbin Wei ,  Durga Prasad Malladi

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

CPC classification number: H04W72/0446 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0094 ,  H04W72/0406 ,  H04W72/14

Abstract: Various aspects described herein relate to communicating using dynamic uplink and downlink transmission time interval (TTI) switching in a wireless network. A notification can be received from a network entity of switching a configurable TTI from downlink communications to uplink communications. The configurable TTI can be one of a plurality of TTIs in a frame structure that allows dynamic switching of configurable TTIs between downlink and uplink communications within a frame. Additionally, uplink communications can be transmitted to the network entity during the configurable TTI based at least in part on the notification.

Abstract translation: 本文描述的各个方面涉及使用无线网络中的动态上行链路和下行链路传输时间间隔（TTI）切换进行通信。 可以从网络实体接收到将可配置TTI从下行链路通信切换到上行链路通信的通知。 可配置TTI可以是帧结构中的多个TTI之一，其允许在帧内的下行链路和上行链路通信之间的可配置TTI的动态切换。 此外，至少部分地基于通知，可以在可配置TTI期间将上行链路通信发送到网络实体。

公开(公告)号：US09119144B2

公开(公告)日：2015-08-25

申请号：US13776110

申请日：2013-02-25

Applicant: QUALCOMM Incorporated

Inventor： Gene Wesley Marsh ,  Arumugam Chendamarai Kannan

IPC: H04W56/00

CPC classification number: H04W56/00

Abstract: Various aspects of an approach for generating a large number of balanced weight sequences such as balanced Hamming weight preamble sequences are described herein. The approach provides for the generation of balanced weigh sequences that need to satisfy requirements such as minimal cross-correlation with delayed versions of itself and other sequences in the allowed set. The approach includes creating a set of symbol groups that include balanced properties from which a sequence may be generated by selecting therefrom.

Abstract translation: 本文描述了用于产生大量平衡加权序列（诸如平衡汉明权重前导码序列）的方法的各个方面。 该方法提供了产生平衡权重序列，其需要满足诸如与其允许集合中的自身延迟版本和其他序列的最小互相关等要求。 该方法包括创建一组符号组，其包括通过从中选择序列可以从中生成序列的平衡属性。

公开(公告)号：US12212992B2

公开(公告)日：2025-01-28

申请号：US17077524

申请日：2020-10-22

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud Taherzadeh Boroujeni ,  Arumugam Chendamarai Kannan ,  Tao Luo

IPC: H04W24/10 ,  H04B7/06 ,  H04B17/318 ,  H04B17/336 ,  H04L1/00 ,  H04W72/23 ,  H04W76/27 ,  H04W80/02

Abstract: An interference metric measured at a specific antenna may differ from interference metrics at different antennas. As a result, any actions based on the interference metric may unduly be influenced by such difference. In some implementations, an apparatus or device reports an overall interference metric that accounts for spatial variations in interference metrics at different antennas. An example method includes measuring, by a user equipment, an interference metric at each antenna of two or more antennas for wireless signals transmitted by a base station, generating an overall interference metric based on the interference metrics for the two or more antennas, and transmitting, by the user equipment, the overall interference metric to the base station.