公开(公告)号：US20170251446A1

公开(公告)日：2017-08-31

申请号：US15402647

申请日：2017-01-10

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Taesang Yoo ,  Juan Montojo

IPC: H04W56/00 ,  H04W48/16

CPC classification number: H04W56/0035

Abstract: Estimation of frequency error is disclosed through use of beacon or preamble transmissions. A base station transmits one or more preamble tones at predetermined frequencies using all allocated transmission power associated with the transmission bandwidth for the one or more preamble tones. The base station then transmits its synchronization signals. A UE collects a set of samples from the received transmissions waveform and successively transforms the samples to a frequency domain. The UE may then detect the preamble tones as having at least a threshold power relative to other samples in the transformed samples. The frequency error may then be set as the difference between the detected frequency or frequencies of the received preamble tones and the known predetermined transmission frequency.

公开(公告)号：US09749970B2

公开(公告)日：2017-08-29

申请号：US15045603

申请日：2016-02-17

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Jelena Damnjanovic ,  Peter Gaal ,  Wanshi Chen ,  Taesang Yoo

IPC: H04W52/34 ,  H04W52/36 ,  H04W52/14

CPC classification number: H04W52/346 ,  H04W52/146 ,  H04W52/365

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may coordinate power utilization across component carriers (CCs) with different transmission time interval (TTI) configurations. For example, the UE may reserve a portion of the transmit power for a CC with a reduced TTI length (e.g., an enhanced CC (eCC)). In other examples, the UE may dynamically allocate power between CCs with overlapping uplink periods. That is, the UE may borrow power allocated to one CC to transmit on an eCC. The UE may use a prioritization scheme to determine the transmit power for each CC. In some cases, the UE may send a power headroom report based on the power level of the eCC. The power headroom may be a virtual power headroom based on predicted eCC transmission power, or an actual power headroom based on uplink scheduling.

公开(公告)号：US09742515B2

公开(公告)日：2017-08-22

申请号：US14450157

申请日：2014-08-01

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Yi Huang ,  Tao Luo ,  Taesang Yoo

IPC: H04J1/12 ,  H04J11/00

CPC classification number: H04J11/005

Abstract: Aspects of the disclosure are related to identifying whether an apparatus (e.g., base station, access point, etc.) is transmitting using a CRS based transmission scheme or a UE-RS based transmission scheme. Such detection may be necessary for PDSCH interference cancellation (IC) of a neighboring cell since a UE may not know which transmission scheme is used by the neighboring cell. For instance, the UE may know the transmission scheme of the serving cell, but the UE may not know the transmission scheme of a neighboring non-serving cell. As such, aspects of the disclosure provide for a blind detection algorithm to identify or determine a transmission mode or transmission scheme of a neighboring cell to then apply interference cancellation (IC) to an interfering signal received from the neighboring cell.

公开(公告)号：US20170223740A1

公开(公告)日：2017-08-03

申请号：US15410640

申请日：2017-01-19

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Jing Sun ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic

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

CPC classification number: H04W74/0816 ,  H04W72/0446 ,  H04W72/12 ,  H04W74/02 ,  H04W74/0808

Abstract: Uplink short transmissions (ULSTs) may be configured in a wireless communications system to be transmitted in configured uplink resources within a listen-before-talk (LBT) frame or within a ULST window during which a user equipment (UE) may transmit a ULST and during which the base station may monitor for ULSTs. A UE having an amount of data to be transmitted that is less than a threshold value may transmit the data in the ULST, and avoid the need to have the base station allocate separate uplink resources outside of the configured uplink resources or the ULST window.

公开(公告)号：US20170215204A1

公开(公告)日：2017-07-27

申请号：US15369642

申请日：2016-12-05

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Tao Luo

IPC: H04W72/14 ,  H04L5/00 ,  H04W72/04 ,  H04L1/18

CPC classification number: H04W72/14 ,  H04L1/1671 ,  H04L1/1812 ,  H04L1/1864 ,  H04L1/1887 ,  H04L1/1896 ,  H04L5/0055 ,  H04W72/042

Abstract: Methods, systems, and devices for wireless communication are described. After receiving a transmission, a user equipment (UE) may store status information for the transmission and send an acknowledgment message that includes a signature. When a base station receives an acknowledgment message with a signature, it may transmit a subsequent downlink grant that includes the same signature. The signature included in a downlink grant may enable the UE to retrieve a stored status and decode the next data transmission based on the retrieved status. That is, the base station may use the signature in the grant to indicate which acknowledgment the grant is based on.

公开(公告)号：US20170099126A1

公开(公告)日：2017-04-06

申请号：US15250586

申请日：2016-08-29

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Jing Sun ,  Siddhartha Mallik ,  Tao Luo ,  Peter Gaal ,  Xiaoxia Zhang ,  Jun Wang

IPC: H04L5/00 ,  H04J11/00

CPC classification number: H04L5/0048 ,  H04J11/0069 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0037 ,  H04L5/005 ,  H04L5/0064 ,  H04L7/00

Abstract: Methods, systems, and devices are described for a system that supports wireless communication with a first set of devices using a first OFDM symbol duration associated with a first tone spacing (i.e., a first physical layer (PHY) configuration) and second set of devices using a PHY configuration associated with a second tone spacing. A base station may transmit a set of discovery reference signals (DRS) in a narrowband region of a primary channel of a carrier. The DRS may have the first PHY configuration and a secondary channel of the carrier may support communications using the second PHY configuration. The base station may transmit a first system information (SI) message for one set of devices using the first PHY configuration, and it may transmit a second SI message for another set of devices using the second PHY configuration.

公开(公告)号：US20170041766A1

公开(公告)日：2017-02-09

申请号：US15190040

申请日：2016-06-22

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Siddhartha Mallik ,  Jun Wang ,  Aleksandar Damnjanovic ,  Taesang Yoo ,  Jing Sun ,  Yongbin Wei

IPC: H04W4/06 ,  H04W76/04 ,  H04L5/00

CPC classification number: H04W4/06 ,  H04L5/0007 ,  H04L5/0055 ,  H04W28/065 ,  H04W76/27 ,  H04W80/02

Abstract: Methods, systems, and devices for wireless communication are described. A transmitting device, which may be configured without a radio link control (RLC) layer, may receive a packet data convergence protocol (PDCP) protocol data unit (PDU) at a media access control (MAC) layer. The device may then generate a set of transport blocks at the MAC layer using the PDCP PDU and transmit them over a wireless connection. A receiving device, which may also be configured without an RLC layer, may receive the transport blocks at the MAC layer, generate a MAC service data unit (SDU), and convey the MAC SDU to a PDCP. In some cases, the receiving device may then send an acknowledgement (ACK) or negative acknowledgement (NACK) for each transport block that includes a portion of the PDCP PDU, and the transmitting device may indicate to the PDCP layer whether the PDCP PDU was successfully received.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 可以被配置为没有无线电链路控制（RLC）层的发射设备可以在媒体接入控制（MAC）层处接收分组数据会聚协议（PDCP）协议数据单元（PDU）。 然后，设备可以使用PDCP PDU在MAC层处生成一组传输块，并通过无线连接发送它们。 还可以配置为没有RLC层的接收设备可以在MAC层接收传输块，生成MAC服务数据单元（SDU），并将MAC SDU传送给PDCP。 在一些情况下，接收设备然后可以为包括PDCP PDU的一部分的每个传输块发送确认（ACK）或否定确认（NACK），并且发送设备可以向PDCP层指示PDCP PDU是否成功 收到了

公开(公告)号：US20170026297A1

公开(公告)日：2017-01-26

申请号：US15182214

申请日：2016-06-14

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo

IPC: H04L12/825 ,  H04W72/04 ,  H04W74/08 ,  H04B7/06 ,  H04W74/00

CPC classification number: H04L47/25 ,  H04B7/0623 ,  H04L1/0057 ,  H04L1/0067 ,  H04L1/1896 ,  H04W72/04

Abstract: Techniques for code block (CB) segmentation and rate matching in wireless deployments that may use CB-level feedback may provide that a transport block group (TBG) may include one or more CBs from multiple transport blocks (TBs). Such TBGs may support retransmissions of one or more CBs from different TBs within a TBG transmission. In certain examples, a TBG size may be determined, and a retransmission size associated with any CBs to be retransmitted are determined. Based at least in part on the TBG size and retransmission size, it may be determined whether a new TB may be included in the TBG.

Abstract translation: 用于可能使用CB级反馈的无线部署中的码块（CB）分段和速率匹配的技术可以提供传输块组（TBG）可以包括来自多个传输块（TB）的一个或多个CB。 这种TBG可以支持在TBG传输中来自不同TB的一个或多个CB的重传。 在某些示例中，可以确定TBG大小，并且确定与要重传的任何CB相关联的重传大小。 至少部分地基于TBG大小和重传大小，可以确定TBG中是否可以包括新的TB。

公开(公告)号：US20170012748A1

公开(公告)日：2017-01-12

申请号：US15172682

申请日：2016-06-03

Applicant: QUALCOMM Incorporated

Inventor： Onkar Jayant Dabeer ,  Siddhartha Mallik ,  Taesang Yoo ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04L5/00 ,  H04W56/00 ,  H04W72/12 ,  H04W74/08

CPC classification number: H04L5/0007 ,  H04W56/001 ,  H04W72/1215 ,  H04W74/08 ,  H04W74/0816

Abstract: Techniques are described for wireless communication. One method includes identifying a plurality of counters used to contend for access to a plurality of channels of an unlicensed radio frequency spectrum band. Each of the plurality of counters is associated with a respective channel of the plurality of channels of the unlicensed radio frequency spectrum band. The method also includes measuring at least one channel of the plurality of channels of the unlicensed radio frequency spectrum band. The measuring is associated with a contention for access to the at least one channel of the unlicensed radio frequency spectrum band. The method also includes synchronizing or desynchronizing at least a subset of the plurality of counters based at least in part on the measuring.

Abstract translation: 技术描述为无线通信。 一种方法包括识别用于竞争接入未许可射频频带的多个信道的多个计数器。 多个计数器中的每一个与未许可射频频带的多个信道的相应信道相关联。 该方法还包括测量未许可射频频带的多个信道中的至少一个信道。 该测量与用于访问未经许可的射频频带的至少一个信道的争用相关联。 该方法还包括至少部分地基于测量同步或同步至少该多个计数器的子集。

公开(公告)号：US20160352482A1

公开(公告)日：2016-12-01

申请号：US15161600

申请日：2016-05-23

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Tao Luo

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04L5/0057 ,  H04L5/0091 ,  H04L27/0006 ,  H04W72/042

Abstract: Methods, systems, and devices for wireless communication are described, which may be employed for wireless communication in contention-based (e.g., unlicensed or shared) spectrum. An aperiodic channel state information (CSI) reference signals (RS) may be used for channel quality indicator (CQI) measurements, for example. A user equipment (UE) may receive signaling to indicate the presence of CSI RS and may receive the CSI RS according to the signaling. The UE may then compute a CQI based on CSI RS, and transmit the CQI in a report to a base station. In some examples, a quasi-periodic CSI RS is used. For instance, the UE may determine a different location for the CSI RS. For example, the UE may identify a periodic anchor subframe, and locate the CSI RS based on constant offset from the anchor subframe. Periodic or a clear-channel-assessment-exempt transmission based CSI RS examples are also described.

Abstract translation: 描述了用于无线通信的方法，系统和设备，其可以用于基于争用的（例如，未许可或共享）频谱中的无线通信。 例如，非周期性信道状态信息（CSI）参考信号（RS）可用于信道质量指示符（CQI）测量。 用户设备（UE）可以接收信令以指示CSI RS的存在，并且可以根据信令接收CSI RS。 然后，UE可以基于CSI RS计算CQI，并将报告中的CQI发送到基站。 在一些示例中，使用准周期性CSI RS。 例如，UE可以为CSI RS确定不同的位置。 例如，UE可以识别周期性的锚定子帧，并且基于来自锚定子帧的恒定偏移来定位CSI RS。 还描述了周期性或清除信道评估豁免传输的CSI RS示例。