公开(公告)号：US20170064743A1

公开(公告)日：2017-03-02

申请号：US15244385

申请日：2016-08-23

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Madhavan Srinivasan Vajapeyam ,  Wanshi Chen ,  Alberto Rico Alvarino ,  Renqiu Wang ,  Hao Xu ,  Seyed Ali Akbar Fakoorian ,  Shimman Arvind Patel ,  Peter Gaal

IPC: H04W74/08 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04W74/0833 ,  H04L5/0048 ,  H04W16/30 ,  H04W72/02 ,  H04W72/0453 ,  H04W74/002

Abstract: Random access techniques may use subcarriers allocated for random access requests in narrowband communication. Physical resources may be selected for transmission of a random access request based on a “coverage class” of a user equipment (UE). In some examples, a set of coverage classes may be identified based on one or more UE channel conditions, such as pathloss. Each coverage class may have one or more associated subcarriers of a set of subcarriers in a narrowband bandwidth, and random access messages may be transmitted using the associated subcarrier(s) for the coverage class of a UE. In some examples, different coverage classes may have different numbers of redundant transmissions of a random access message, which may be based on channel conditions associated with a particular coverage class. A UE, based on a measured channel condition, may determine a coverage class and select a subcarrier based on the determined coverage class.

Abstract translation: 随机接入技术可以使用在窄带通信中分配用于随机接入请求的子载波。 可以基于用户设备（UE）的“覆盖类别”来选择用于发送随机接入请求的物理资源。 在一些示例中，可以基于一个或多个UE信道条件（诸如路径损耗）来识别一组覆盖类别。 每个覆盖类别可以在窄带带宽中具有一组子载波的一个或多个相关联的子载波，并且可以使用用于UE的覆盖类别的相关联的子载波来发送随机接入消息。 在一些示例中，不同的覆盖类别可以具有不同数量的随机接入消息的冗余传输，其可以基于与特定覆盖类别相关联的信道条件。 基于测量的信道条件，UE可以确定覆盖类别并且基于所确定的覆盖类别来选择子载波。

公开(公告)号：US09584285B2

公开(公告)日：2017-02-28

申请号：US14568065

申请日：2014-12-11

Applicant: QUALCOMM INCORPORATED

Inventor： Alan Barbieri ,  Tingfang Ji ,  Hao Xu ,  Wanshi Chen

IPC: H04W72/00 ,  H04L5/00 ,  H04W72/08 ,  H04W72/04 ,  H04W24/10 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04L5/0053 ,  H04L5/0035 ,  H04L5/0073 ,  H04W24/10 ,  H04W72/0413 ,  H04W72/082 ,  H04W88/02 ,  H04W88/08

Abstract: Periodic over-the-air channel state information (CSI) reporting to serving cells and one or more non-serving cells via a control channel multi-point attachment is disclosed. The channel state information report may be transmitted based on information indicating how to transmit the channel state information report to the non-serving cell. The information indicating how to transmit the channel state information report may be provided by the serving eNodeB. The information may include a periodicity, offset parameters, timing advance commands, power control commands, and/or an aperiodic report request.

Abstract translation: 公开了经由控制信道多点连接向服务小区和一个或多个非服务小区报告的定期空中信道状态信息（CSI）。 可以基于指示如何将信道状态信息报告发送到非服务小区的信息来发送信道状态信息报告。 指示如何发送信道状态信息报告的信息可以由服务eNodeB提供。 信息可以包括周期性，偏移参数，定时提前命令，功率控制命令和/或非周期性报告请求。

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：US20170013570A1

公开(公告)日：2017-01-12

申请号：US15199619

申请日：2016-06-30

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Wanshi Chen ,  Hao Xu

IPC: H04W52/36 ,  H04W24/08 ,  H04L29/12 ,  H04W74/08 ,  H04W4/00 ,  H04W72/04

CPC classification number: H04W52/365 ,  H04L61/6022 ,  H04W4/70 ,  H04W24/08 ,  H04W52/146 ,  H04W52/242 ,  H04W72/0413 ,  H04W74/0833

Abstract: Enhanced power headroom reporting (ePHR) for MTC devices. The ePHR techniques may include configuration and triggering of reporting when a corresponding change to a coverage enhancement (CE) level is likely to result. For example, ePHR may be based on parameters more directly related to PH change instead of PL changes. MTC devices may be configured with multiple thresholds for ePHR reporting that define ePHR regions associated with CE levels. In some examples, an ePHR triggered at the MAC level is used to trigger sending a request for uplink data resources. Legacy PH reporting may be disabled when ePHR is configured to reduce overhead.

Abstract translation: 增强MTC设备的功率余量报告（ePHR）。 当可能导致对覆盖增强（CE）级别的相应改变时，ePHR技术可以包括报告的配置和触发。 例如，ePHR可以​​基于与PH变化直接相关的参数而不是PL变化。 可以将MTC设备配置为用于定义与CE级别相关联的ePHR区域的ePHR报告的多个阈值。 在一些示例中，在MAC级触发的ePHR用于触发发送对上行链路数据资源的请求。 当配置ePHR以减少开销时，传统PH报告可能会被禁用。

公开(公告)号：US09538502B2

公开(公告)日：2017-01-03

申请号：US13874259

申请日：2013-04-30

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Hao Xu

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0094 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/0453 ,  H04W72/048

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for managing control and data transmissions for low cost UEs. In certain aspects, multiplexing of a control channel and data channel may be allowed in a Physical Resource Block (PRB) pair of a subframe. An indication may be provided to the UE regarding whether a portion of resources of the PRB pair not used to transmit the control channel is available for transmitting the data channel. In alternative aspects, control and data may be scheduled in different subframes, such that there is no need to multiplex them in a subframe or a PRB pair in a same subframe.

Abstract translation: 本公开的某些方面涉及用于管理低成本UE的控制和数据传输的方法和装置。 在某些方面，可以在子帧的物理资源块（PRB）对中允许控制信道和数据信道的复用。 可以向UE提供关于不用于发送控制信道的PRB对的资源的一部分是否可用于发送数据信道的指示。 在替代方面，可以在不同的子帧中调度控制和数据，使得不需要在相同子帧中的子帧或PRB对中复用它们。

公开(公告)号：US20160381490A1

公开(公告)日：2016-12-29

申请号：US15187586

申请日：2016-06-20

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Wanshi Chen ,  Seyed Ali Akbar Fakoorian ,  Hao Xu ,  Yongbin Wei

IPC: H04W4/00 ,  H04W72/12 ,  H04L1/00 ,  H04L5/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. User equipment (UE) and base stations may support frequency hopping with fast retuning for enhanced machine type communication (eMTC). For example, a UE may need to retune portions of its receive or transmit chain to support operation on various frequency bands, and it may perform the retune within a few symbols. Both base station and UE may anticipate or account for the retuning delay and communicate accordingly. A base station may refrain from transmitting for a certain period of time, for example. A base station may also account for frequency hopping delays for uplink communications. Systems may employ other techniques to support eMTC. For example, UEs may leverage reference signal patterns in certain control channels for demodulation. In some cases, base stations may alter control channel transmissions to account for various types of UEs with in the system.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 用户设备（UE）和基站可以通过快速重新调谐来支持跳频，用于增强的机器类型通信（eMTC）。 例如，UE可能需要重新调整其接收链或发送链的部分以支持在各种频带上的操作，并且它可以在几个符号内执行重调。 基站和UE都可以预期或重新计算延迟并进行相应的通信。 例如，基站可以避免发送一段时间。 基站也可以考虑用于上行链路通信的跳频延迟。 系统可以采用其他技术来支持eMTC。 例如，UE可以利用某些控制信道中的参考信号模式进行解调。 在一些情况下，基站可以改变控制信道传输以在系统中考虑各种类型的UE。

公开(公告)号：US20160373943A1

公开(公告)日：2016-12-22

申请号：US15180297

申请日：2016-06-13

Applicant: QUALCOMM Incorporated

Inventor： Michael Mao Wang ,  Hao Xu ,  Peter Gaal ,  Wanshi Chen ,  Yongbin Wei

IPC: H04W24/02 ,  H04L12/26 ,  H04B17/309

CPC classification number: H04W24/02 ,  H04L43/0829 ,  H04W52/16 ,  H04W52/20 ,  H04W52/242

Abstract: A wireless device may determine a coverage enhancement (CE) level (or coverage extension) by attempting to decode a received broadcast signal. The wireless device may attempt to decode a portion of the broadcast signal using a CE level that is less than the CE level of the broadcast. If the decoding attempt is successfully, the CE level may be declared as an operating CE level. If decoding is unsuccessful, the CE level may be increased decoding retried. The wireless device may continue to test-decode the broadcast signal at new (e.g., increasing) CE levels until a CE level is sufficient for a decode and is declared the operating CE level of the wireless device. In some cases, the wireless device test-decodes a broadcast channel after selecting a CE level based on a path loss measurement of a downlink signal (e.g., reference signal).

Abstract translation: 无线设备可以通过尝试对所接收的广播信号进行解码来确定覆盖增强（CE）级别（或覆盖扩展）。 无线设备可以尝试使用小于广播的CE级别的CE级别来解码广播信号的一部分。 如果解码尝试成功，则CE级别可以被声明为操作的CE级别。 如果解码不成功，则CE级别可能会增加解码重试。 无线设备可以继续以新的（例如，增加）CE级别对广播信号进行测试解码，直到CE级别足以用于解码，并且被宣告为无线设备的操作CE级别。 在某些情况下，无线设备在基于下行链路信号的路径损耗测量（例如，参考信号）选择CE级别之后对广播信道进行测试解码。

公开(公告)号：US09510208B2

公开(公告)日：2016-11-29

申请号：US14490154

申请日：2014-09-18

Applicant: QUALCOMM Incorporated

Inventor： Yongbin Wei ,  Wanshi Chen ,  Tao Luo ,  Peter Gaal ,  Hao Xu ,  Tingfang Ji ,  Naga Bhushan

IPC: G01R31/08 ,  H04W16/14 ,  H04W24/08 ,  H04W24/00 ,  H04L1/00 ,  H04W74/08 ,  H04W48/16

CPC classification number: H04W16/14 ,  H04L1/0026 ,  H04W24/00 ,  H04W24/08 ,  H04W48/16 ,  H04W74/0808

Abstract: Methods, systems, apparatuses, and devices are described for wireless communication. In one example, a sequence may be determined based on at least one of: an operator identifier associated with an operator using a spectrum or a clear channel assessment (CCA) slot index associated with the operator using the spectrum. At least one channel based on the determined sequence may be used to communicate over the spectrum.

Abstract translation: 描述了用于无线通信的方法，系统，设备和设备。 在一个示例中，可以基于以下至少之一来确定序列：与使用频谱相关联的频谱或与操作者相关联的清晰信道评估（CCA）时隙索引与运营商相关联的运营商标识符。 基于确定的序列的至少一个信道可以用于通过频谱进行通信。

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：US20160345296A1

公开(公告)日：2016-11-24

申请号：US15217917

申请日：2016-07-22

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Tingfang Ji ,  Miguel Griot

IPC: H04W72/00 ,  H04W48/10 ,  H04W72/04 ,  H04W4/00

CPC classification number: H04W72/005 ,  H04L41/0866 ,  H04W4/70 ,  H04W24/02 ,  H04W28/18 ,  H04W48/10 ,  H04W48/16 ,  H04W72/048 ,  H04W92/18

Abstract: Methods, systems, and devices are described for facilitating Machine Type Communication in a wireless communications system. Link budget-limited MTC devices, may be supported. An MTC physical broadcast channel may be utilized for the Machine Type Communication. The MTC physical broadcast channel may be transmitted over one or more subframes different from a regular physical broadcast channel. The payload for the MTC physical broadcast channel may be reduced. The MTC physical broadcast channel may also be utilized to indicate the presence of paging and/or to indicate a change in system information. Some embodiments utilize one or more MTC-specific system information blocks. The MTC-specific system information blocks may combine and/or simplify multiple system information blocks. The location of the MTC system information blocks may be predetermined or information about their location may be transmitted over the MTC physical broadcast channel. An enhanced paging channel may be used to indicate system information updates.

Abstract translation: 描述了用于促进无线通信系统中的机器类型通信的方法，系统和设备。 可以支持链路预算有限的MTC设备。 MTC物理广播信道可以用于机器类型通信。 可以通过与常规物理广播信道不同的一个或多个子帧来发送MTC物理广播信道。 可以减少用于MTC物理广播信道的有效载荷。 MTC物理广播信道也可以用于指示寻呼的存在和/或指示系统信息的改变。 一些实施例利用一个或多个MTC特定系统信息块。 MTC特定系统信息块可以组合和/或简化多个系统信息块。 MTC系统信息块的位置可以是预定的，或者关于它们的位置的信息可以通过MTC物理广播信道来发送。 可以使用增强的寻呼信道来指示系统信息更新。