公开(公告)号：US09769789B2

公开(公告)日：2017-09-19

申请号：US14818794

申请日：2015-08-05

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Madhavan Srinivasan Vajapeyam ,  Durga Prasad Malladi ,  Yongbin Wei

IPC: H04W68/00 ,  H04W72/04 ,  H04W72/12 ,  H04W68/02 ,  H04W16/14 ,  H04W74/08

CPC classification number: H04W68/005 ,  H04W16/14 ,  H04W68/025 ,  H04W72/0453 ,  H04W72/1289 ,  H04W74/0808

Abstract: Techniques are described for wireless communication. A first method includes receiving a transmission including a paging group indicator and an indication of a time window. The transmission may be received at a user equipment (UE) over an unlicensed radio frequency spectrum band. The first method may also include monitoring, based on the paging group indicator, the unlicensed radio frequency spectrum band during the time window to receive an asynchronous paging message from a base station. A second method includes transmitting the transmission over the unlicensed radio frequency spectrum band; performing a number of clear channel assessments (CCAs) on the unlicensed radio frequency spectrum band during the time window; and transmitting the paging message over the unlicensed radio frequency spectrum band at a transmission time during the time window. The transmission time may be based on a result of at least one of the CCAs.

公开(公告)号：US09736829B2

公开(公告)日：2017-08-15

申请号：US14494929

申请日：2014-09-24

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Hao Xu ,  Peter Gaal ,  Tao Luo ,  Srinivas Yerramalli ,  Tingfang Ji ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Naga Bhushan ,  Durga Prasad Malladi

IPC: H04W72/04 ,  H04L5/00 ,  H04W52/02 ,  H04L29/06 ,  H04W16/14 ,  H04W76/02 ,  H04W74/02

CPC classification number: H04W72/042 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0091 ,  H04L65/601 ,  H04L69/14 ,  H04W16/14 ,  H04W52/0209 ,  H04W74/02 ,  H04W76/15 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/26

Abstract: Methods, apparatuses, systems, and devices are described for wireless communication. In one method, at least a first carrier may be monitored for an indication of a clear channel assessment (CCA) for a second carrier in a shared spectrum, and communication may take place using the second carrier based on the indication. In another method, a CCA may be performed for a second carrier second carrier of a shared spectrum, and an indication of the CCA for the second carrier may be transmitted on a first carrier.

公开(公告)号：US20170188323A1

公开(公告)日：2017-06-29

申请号：US15460538

申请日：2017-03-16

Applicant: QUALCOMM Incorporated

Inventor： Naga Bhushan ,  Durga Prasad Malladi ,  Yongbin Wei ,  Peter Gaal ,  Tao Luo ,  Tingfang Ji ,  Gavin Bernard Horn ,  Wanshi Chen ,  Aleksandar Damnjanovic

IPC: H04W56/00 ,  H04W16/14 ,  H04L27/26 ,  H04W74/08

CPC classification number: H04W16/14 ,  H04J11/00 ,  H04L1/00 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/14 ,  H04L5/1469 ,  H04L27/0006 ,  H04L27/2602 ,  H04W24/02 ,  H04W28/0252 ,  H04W28/0289 ,  H04W28/08 ,  H04W28/16 ,  H04W48/10 ,  H04W56/001 ,  H04W56/002 ,  H04W72/04 ,  H04W72/0413 ,  H04W72/082 ,  H04W74/006 ,  H04W74/04 ,  H04W74/0808 ,  H04W74/0816 ,  H04W74/0833 ,  H04W84/12 ,  H04W88/02 ,  H04W88/06 ,  H04W88/08

Abstract: Methods and apparatuses are described in which an unlicensed spectrum is used for Long Term Evolution (LTE) communications. A first method includes synchronizing clear channel assessment (CCA) slots across a plurality of base stations to determine availability of an unlicensed spectrum for transmissions in a next transmission interval. A second method includes performing a CCA during one of a plurality of CCA slots synchronized across a plurality of evolved Node Bs (eNBs) to determine availability of unlicensed spectrum for transmissions in a next transmission interval.

公开(公告)号：US20170181155A1

公开(公告)日：2017-06-22

申请号：US15359340

申请日：2016-11-22

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Ozcan Ozturk ,  Aleksandar Damnjanovic ,  Juan Montojo

IPC: H04W72/04 ,  H04W72/12 ,  H04L27/26 ,  H04W76/02 ,  H04L5/00 ,  H04L1/18

CPC classification number: H04W72/0413 ,  H04L1/1861 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2607 ,  H04W72/042 ,  H04W72/1289 ,  H04W76/15

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may identify uplink (UL) control information (UCI) to transmit during a subframe. The UE may then select a UL channel on which to transmit the UCI based on whether a shared data and control UL channel employs contention-based scheduling. For example, multiple UEs could contend for access to the same semi-persistently scheduled (SPS) physical UL shared channel (PUSCH). Each UE may utilize a different demodulation reference (DMRS) signal cyclic shift to identify their transmissions. In some cases, some UCI, such as channel state information (CSI), may be transmitted on a contention-based PUSCH, while other UCI, such as acknowledgement information, may be transmitted on a physical uplink control channel (PUCCH). In some cases, the channel selection may be based on a configuration received from a base station.

公开(公告)号：US09674727B2

公开(公告)日：2017-06-06

申请号：US14567855

申请日：2014-12-11

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Peter Gaal ,  Wanshi Chen ,  Tao Luo ,  Hao Xu

IPC: H04W24/10 ,  H04L1/00 ,  H04L5/00

CPC classification number: H04W24/10 ,  H04L1/0023 ,  H04L1/0026 ,  H04L1/0027 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0098

Abstract: Methods, systems, and devices are described for dynamic cell mode indication and reporting channel and interference feedback for dormant cells in a carrier aggregation environment. Indicators of cell mode for one or more secondary cells are sent using a transmission mechanism and may configure active or dormant sub-periods within the indicated periods. Indicators of cell mode for a secondary cell may be transmitted on a carrier of the primary cell, or the indicators may be transmitted on carriers of the secondary cell. Dormancy may also be indicated by the presence or absence of a cell mode indicator for predetermined time periods. When CSI measurements occur for a carrier of a dormant cell, the UE may report CSI for the dormant periods, suppress CSI reporting for the dormant periods, adjust a reporting frequency for the dormant periods, or report some types of CSI and not others for the dormant periods.

公开(公告)号：US09565593B2

公开(公告)日：2017-02-07

申请号：US14281636

申请日：2014-05-19

Applicant: QUALCOMM Incorporated

Inventor： Naga Bhushan ,  Durga Prasad Malladi ,  Yongbin Wei ,  Peter Gaal ,  Tao Luo ,  Tingfang Ji ,  Gavin Bernard Horn ,  Wanshi Chen ,  Aleksandar Damnjanovic

IPC: H04W28/08 ,  H04W28/02 ,  H04W74/08 ,  H04W24/02 ,  H04W28/16 ,  H04W72/04 ,  H04W56/00 ,  H04W74/04 ,  H04W16/14 ,  H04W76/02 ,  H04L1/00 ,  H04L27/26 ,  H04L27/00 ,  H04W48/10 ,  H04W72/08 ,  H04W74/00 ,  H04L5/14 ,  H04L5/00 ,  H04W84/12 ,  H04W88/06 ,  H04W88/08

CPC classification number: H04W16/14 ,  H04J11/00 ,  H04L1/00 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/14 ,  H04L5/1469 ,  H04L27/0006 ,  H04L27/2602 ,  H04W24/02 ,  H04W28/0252 ,  H04W28/0289 ,  H04W28/08 ,  H04W28/16 ,  H04W48/10 ,  H04W56/001 ,  H04W56/002 ,  H04W72/04 ,  H04W72/0413 ,  H04W72/082 ,  H04W74/006 ,  H04W74/04 ,  H04W74/0808 ,  H04W74/0816 ,  H04W74/0833 ,  H04W84/12 ,  H04W88/02 ,  H04W88/06 ,  H04W88/08

Abstract: Methods and apparatuses are described in which an unlicensed spectrum is used for Long Term Evolution (LTE) communications. A first method includes comparing past transmission activity on an unlicensed spectrum to an activity threshold, transmitting a first subframe type in the unlicensed spectrum during a next active transmission when the past transmission activity is greater than the activity threshold, and transmitting a second subframe type in the unlicensed spectrum during a next active transmission when the past transmission activity is lesser than the activity threshold, the second subframe type comprising a more robust subframe type than the first subframe type. A second method includes generating one or both of PUCCH signals and PUSCH signals based on interleaved signals that increase nominal bandwidth occupancy in an unlicensed spectrum, and transmitting the generated signals in the unlicensed spectrum. A third method includes receiving the PUCCH signals and the PUSCH signals.

Abstract translation: 对长期演进（LTE）通信中使用非许可频谱的方法和装置进行描述。 第一种方法包括将未许可频谱上的过去传输活动与活动阈值进行比较，当过去传输活动大于活动阈值时，在下一活动传输期间，在非许可频谱中发送第一子帧类型，并将 在过去传输活动小于活动阈值的下一活动传输期间的未许可频谱，第二子帧类型包括比第一子帧类型更强壮的子帧类型。 第二种方法包括基于增加非许可频谱中的标称带宽占用的交织信号产生PUCCH信号和PUSCH信号中的一个或两者，以及在未许可频谱中发送所生成的信号。 第三种方法包括接收PUCCH信号和PUSCH信号。

公开(公告)号：US09553706B2

公开(公告)日：2017-01-24

申请号：US14275803

申请日：2014-05-12

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Michael Mao Wang ,  Wanshi Chen ,  Peter Gaal ,  Yongbin Wei ,  Aleksandar Damnjanovic ,  Hao Xu ,  Taesang Yoo

IPC: H04L5/00 ,  H04W24/02 ,  H04L25/02

CPC classification number: H04L5/0053 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0058 ,  H04L25/0202 ,  H04L25/0224 ,  H04L25/0236 ,  H04W24/02

Abstract: Reference signals may not uniformly span over time and/or frequency on a resource unit. For example, reference signals may non-uniformly occupy symbols of a subframe. Alternatively, reference signals normally transmitted over certain tones of a subframe may have to be punctured to avoid collisions with a PSS and/or SSS transmitted over the same tones. Consequently, a UE may only be able to use a subset of reference signal tones for performing channel estimation. Accordingly, a method, an apparatus, and a computer program product for wireless communication are provided for improving channel estimation under a non-uniform signal pattern. The apparatus indicates to a UE to utilize a subset of reference signals to derive a channel estimate for demodulating data in a specific subframe, and transmits a plurality of subframes, the plurality of subframes including the reference signals and the specific subframe, the specific subframe including a PSS and/or SSS.

Abstract translation: 参考信号可能不会在资源单元上的时间和/或频率上均匀地跨越。 例如，参考信号可能不均匀地占据子帧的符号。 或者，通常在子帧的某些音调上发送的参考信号可能必须被打孔以避免与通过相同音调发送的PSS和/或SSS的冲突。 因此，UE可能仅能够使用用于执行信道估计的参考信号音调的子集。 因此，提供了一种用于无线通信的方法，装置和计算机程序产品，用于在非均匀信号模式下改进信道估计。 该设备向UE指示使用参考信号的子集来导出用于在特定子帧中解调数据的信道估计，并且发送包括参考信号和特定子帧的多个子帧，所述特定子帧包括 PSS和/或SSS。

公开(公告)号：US20160345311A1

公开(公告)日：2016-11-24

申请号：US15064373

申请日：2016-03-08

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Peter Gaal ,  Shimman Arvind Patel ,  Hao Xu ,  Aleksandar Damnjanovic

IPC: H04W72/04 ,  H04W72/00 ,  H04W72/12 ,  H04W74/08

CPC classification number: H04W72/0446 ,  H04L5/00 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0092 ,  H04W72/1205

Abstract: Various aspects described herein relate to receiving data at a user equipment (UE) in wireless communications. The UE monitors a control channel associated with first data resources of a first transmission time interval (TTI). Based on the monitoring, the UE can determine that the control channel schedules second data resources for the UE based on a second TTI. Accordingly, in response to such determination, the UE can process data received over the second data resources based on the second TTI, where a first duration of the first TTI is greater than a second duration of the second TTI.

Abstract translation: 本文描述的各个方面涉及在无线通信中在用户设备（UE）处接收数据。 UE监视与第一传输时间间隔（TTI）的第一数据资源相关联的控制信道。 基于监视，UE可以基于第二TTI来确定控制信道为UE调度第二数据资源。 因此，响应于这种确定，UE可以基于第二TTI来处理通过第二数据资源接收的数据，其中第一TTI的第一持续时间大于第二TTI的第二持续时间。

公开(公告)号：US09503209B2

公开(公告)日：2016-11-22

申请号：US14656589

申请日：2015-03-12

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Aleksandar Damnjanovic ,  Peter Gaal

IPC: H04W4/00 ,  H04J11/00 ,  H04L5/00 ,  H04W48/20 ,  H04W48/16

CPC classification number: H04J11/0079 ,  H04J11/0073 ,  H04J11/0076 ,  H04L5/0048 ,  H04W48/16 ,  H04W48/20 ,  H04W56/00

Abstract: Heterogeneous networks incorporate various small cells, such as femto cells and pico cells, in addition to a macro cell. Existing signals (e.g., PSS and SSS) configured as discovery reference signals (DRSs) may not be sufficient for a UE to discover different cells in a heterogeneous network. The disclosed aspects provide approaches for managing cell IDs for various DRS configurations to improve UE discovery of different cells in heterogeneous networks. In an aspect, a UE receives a first reference signal (e.g., based on a PCI) configured for performing a base station measurement by the UE. The UE further receives one or more second reference signals (e.g., based on a VCI which is associated with the PCI) configured for measurement by the UE. The UE performs the base station measurement based on the first reference signal and the one or more second reference signals.

Abstract translation: 除了宏小区之外，异构网络还包括各种小型单元，例如毫微微小区和微微小区。 配置为发现参考信号（DRS）的现有信号（例如，PSS和SSS）可能不足以使UE发现异构网络中的不同小区。 所公开的方面提供了用于管理用于各种DRS配置的小区ID的方法，以改进异构网络中的不同小区的UE发现。 在一方面，UE接收被配置为执行UE的基站测量的第一参考信号（例如，基于PCI）。 UE还接收配置成由UE测量的一个或多个第二参考信号（例如，基于与PCI相关联的VCI）。 UE基于第一参考信号和一个或多个第二参考信号执行基站测量。

公开(公告)号：US20160338118A1

公开(公告)日：2016-11-17

申请号：US15138769

申请日：2016-04-26

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Aleksandar Damnjanovic ,  Peter Gaal ,  Tao Luo ,  Amir Aminzadeh Gohari ,  Masato Kitazoe

IPC: H04W76/02 ,  H04W40/24 ,  H04J11/00 ,  H04B17/318 ,  H04L29/08

CPC classification number: H04W40/244 ,  H04B17/318 ,  H04J11/0093 ,  H04L69/323 ,  H04W16/14 ,  H04W48/18 ,  H04W72/082

Abstract: Methods, systems, and devices for radio resource management (RRM) measurement and reporting for license assisted access (LAA) cells operating in unlicensed or shared frequency spectrum are described. A user equipment (UE) may receive an RRM measurement configuration including a channel occupancy parameter for measuring neighbor cells of a shared frequency band. The channel occupancy parameter may be used to determine a channel occupancy metric that may be sent to a base station for cell selection. The channel occupancy metric may include an averaged or filtered received signal strength and may be reported for serving cells and/or intra-frequency neighbor cells. A base station may further configure a UE with a discovery reference signals (DRS) measurement timing configuration (DMTC), which may include an extended DMTC search window. The UE may search for DRS transmissions from neighbor cells according to the DMTC.

Abstract translation: 描述了在非许可或共享频谱中工作的许可证辅助访问（LAA）单元的无线电资源管理（RRM）测量和报告的方法，系统和设备。 用户设备（UE）可以接收包括用于测量共享频带的相邻小区的信道占用参数的RRM测量配置。 信道占用参数可以用于确定可以被发送到基站用于小区选择的信道占用度量。 信道占用度量可以包括平均或滤波的接收信号强度，并且可以针对服务小区和/或频率内相邻小区报告。 基站还可以使用发现参考信号（DRS）测量定时配置（DMTC）来配置UE，其可以包括扩展的DMTC搜索窗口。 UE可以根据DMTC搜索来自相邻小区的DRS传输。