公开(公告)号：US09584981B2

公开(公告)日：2017-02-28

申请号：US14470626

申请日：2014-08-27

Applicant: QUALCOMM Incorporated

Inventor： Nima Noorshams ,  Payam Pakzad ,  Ravi Palanki

IPC: H04W4/04 ,  H04W24/10 ,  H04W4/02 ,  H04W4/00 ,  G04C21/20 ,  G01S5/02 ,  G01C21/20

CPC classification number: H04W4/04 ,  G01C21/206 ,  G01S5/0263 ,  G01S5/0294 ,  H04W4/023 ,  H04W4/027 ,  H04W4/80 ,  H04W24/10

Abstract: Method, hardware, device, computer program, and apparatus for positioning mobile devices in unmapped locations based on motion sensor and radio frequency measurements are described. A reference radio signal is received from a transmitter with an unknown absolute position and a reference range measurement is calculated. Mobile device motion sensor data is used to estimate a relative position of the mobile device. A sample radio signal is received from a transmitter with an unknown absolute position and a sample range measurement is calculated. The reference range measurement and the sample range measurement are compared. The estimated motion sensor based position is adjusted according to the result of the comparison.

Abstract translation: 描述了基于运动传感器和射频测量将移动设备定位在未映射位置的方法，硬件，设备，计算机程序和设备。 从具有未知绝对位置的发射机接收参考无线电信号，并且计算参考范围测量。 移动设备运动传感器数据用于估计移动设备的相对位置。 从具有未知绝对位置的发射机接收采样无线电信号，并且计算采样范围测量。 比较参考范围测量和采样范围测量。 根据比较结果调整基于运动传感器的估计位置。

公开(公告)号：US20170006458A1

公开(公告)日：2017-01-05

申请号：US15264236

申请日：2016-09-13

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Siddhartha Mallik ,  Ravi Palanki ,  Naga Bhushan ,  Tao Luo ,  Durga Prasad Malladi

IPC: H04W8/00 ,  H04W72/04 ,  H04W4/02 ,  H04L29/08 ,  H04W56/00

CPC classification number: H04W8/005 ,  H04L5/0053 ,  H04L67/104 ,  H04W4/02 ,  H04W56/002 ,  H04W56/0025 ,  H04W72/00 ,  H04W72/0453 ,  H04W76/10 ,  H04W92/18

Abstract: Techniques for performing peer discovery to enable peer-to-peer (P2P) communication are disclosed. In an aspect, a proximity detection signal used for peer discovery may be generated based on one or more physical channels and/or signals used in a wireless network. In one design, a user equipment (UE) may generate a proximity detection signal occupying at least one resource block based on a SC-FDMA modulation technique. In another design, the UE may generate a proximity detection signal occupying at least one resource block based on an OFDMA modulation technique. The UE may generate SC-FDMA symbols or OFDMA symbols in different manners for different physical channels. In yet another design, the UE may generate a proximity detection signal including a primary synchronization signal and a secondary synchronization signal. For all designs, the UE may transmit the proximity detection signal to indicate its presence and to enable other UEs to detect the UE.

Abstract translation: 公开了用于执行对等体发现以实现对等（P2P）通信的技术。 在一方面，可以基于在无线网络中使用的一个或多个物理信道和/或信号来生成用于对等体发现的接近检测信号。 在一种设计中，用户设备（UE）可以基于SC-FDMA调制技术生成占用至少一个资源块的接近检测信号。 在另一种设计中，UE可以基于OFDMA调制技术生成占用至少一个资源块的接近检测信号。 UE可以针对不同的物理信道以不同的方式生成SC-FDMA符号或OFDMA符号。 在又一设计中，UE可以产生包括主同步信号和次同步信号的接近检测信号。 对于所有设计，UE可以发送接近检测信号以指示其存在并使其他UE能够检测UE。

公开(公告)号：US09538330B2

公开(公告)日：2017-01-03

申请号：US13972750

申请日：2013-08-21

Applicant: QUALCOMM Incorporated

Inventor： Weihua Gao, Jr. ,  Ravi Palanki ,  Wei Chen ,  Ashok Bhatia

IPC: H04W4/00 ,  H04W4/02 ,  H04W24/00 ,  H04W48/20 ,  G01S5/02 ,  G01S5/14 ,  G01S13/76 ,  H04W64/00

CPC classification number: H04W4/023 ,  G01S5/0226 ,  G01S5/0252 ,  G01S5/14 ,  G01S13/767 ,  H04W24/00 ,  H04W48/20 ,  H04W64/00

Abstract: Methods, systems, computer-readable media, and apparatuses for position determination are presented. In some embodiments, a method for position determination includes selecting at least one of a plurality of access points based on a measure of response time variability associated with the at least one access point. The method further includes sending, from a device, a communication to the selected at least one access point. The method also includes receiving, from the selected at least one access point, a response to the communication. The method additionally includes calculating a distance from the device to the selected at least one access point based on a round trip time associated with the response to the communication.

Abstract translation: 提出了用于位置确定的方法，系统，计算机可读介质和装置。 在一些实施例中，一种用于位置确定的方法包括基于与所述至少一个接入点相关联的响应时间变率的度量来选择多个接入点中的至少一个。 该方法还包括从设备向所选择的至少一个接入点发送通信。 该方法还包括从所选择的至少一个接入点接收对通信的响应。 该方法另外包括基于与通信的响应相关联的往返时间计算从设备到所选择的至少一个接入点的距离。

公开(公告)号：US09497732B2

公开(公告)日：2016-11-15

申请号：US13692733

申请日：2012-12-03

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Ravi Palanki

IPC: H04W72/00 ,  H04L1/00 ,  H04L5/00 ,  H04W48/12 ,  H04W72/08 ,  H04W84/04

CPC classification number: H04W72/005 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0073 ,  H04W16/10 ,  H04W48/12 ,  H04W72/0453 ,  H04W72/08 ,  H04W84/045

Abstract: Techniques for supporting communication in a dominant interference scenario are described. A user equipment (UE) may communicate with a first base station and may observe high interference from and/or may cause high interference to a second base station. In one design, the first base station may use a first frequency band, which may overlap at least partially with a second frequency band for the second base station and may further extend beyond the second frequency band. The first base station may send at least one synchronization signal and a broadcast channel in a center portion of the first frequency band for use by UEs to detect the first base station. The second frequency band may be non-overlapping with the center portion of the first frequency band. The first base station may also communicate with at least one UE on the first frequency band.

公开(公告)号：US20160270017A1

公开(公告)日：2016-09-15

申请号：US15164723

申请日：2016-05-25

Applicant: QUALCOMM Incorporated

Inventor： Ravi Palanki ,  Alexei Y. Gorokhov

IPC: H04W56/00 ,  H04W74/04 ,  H04W72/04

CPC classification number: H04W56/0015 ,  H04W72/0413 ,  H04W74/04

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which signals are received from a first base station and a second base station, and a measurement is made of synchronization parameters between the first and second base stations at a user equipment. A signal is transmitted from the user equipment to at least one of the first or second base stations with information about the synchronization parameters. The synchronization parameters generally inform the first and/or second base stations of an adjustment to make to subsequent signals to align reception of the subsequent signals in at least one of time or frequency domains. The user equipment receives a third signal from the first base station and a fourth signal from the second base station, the third and fourth signals being substantially aligned in at least one of the time or frequency domains.

Abstract translation: 提供了一种用于无线通信的方法，装置和计算机程序产品，其中从第一基站和第二基站接收信号，并且测量用户在第一和第二基站之间的同步参数 设备。 使用关于同步参数的信息从用户设备向至少一个第一基站发送信号。 同步参数通常通知第一基站和/或第二基站进行调整以对随后的信号进行调整，以使后续信号在时域或频域中的至少一个中的接收。 用户设备接收来自第一基站的第三信号和来自第二基站的第四信号，第三和第四信号基本上对准时域或频域中的至少一个。

公开(公告)号：US09439199B2

公开(公告)日：2016-09-06

申请号：US14331780

申请日：2014-07-15

Applicant: QUALCOMM Incorporated

Inventor： Ravi Palanki ,  Andrei Dragos Radulescu

IPC: H04W72/04 ,  H04W52/16 ,  H04W52/24 ,  H04W52/04 ,  H04B17/336 ,  H04B17/345

CPC classification number: H04W72/0473 ,  H04B17/336 ,  H04B17/345 ,  H04W52/04 ,  H04W52/16 ,  H04W52/241 ,  H04W52/243

Abstract: Techniques for transmitting power decision pilots are described. A transmitter (e.g., a base station or a UE) may transmit a power decision pilot to indicate a transmit power level that it will use on subsequent time-frequency resources. In one design, the transmitter may determine a set of time-frequency resources to use for transmitting the power decision pilot, determine the transmit power level for the power decision pilot based on the transmit power level to use for data transmission, and transmit the power decision pilot on the set of time-frequency resources to indicate the transmit power level to use for data transmission on the subsequent time-frequency resources. A receiver (e.g., a UE or a base station) may receive power decision pilots from a set of transmitters and may estimate channel quality that the receiver can expect on the subsequent time-frequency resources based on the power decision pilots.

Abstract translation: 描述用于发送功率决策导频的技术。 发射机（例如，基站或UE）可以发射功率决策导频以指示它将在随后的时间 - 频率资源上使用的发射功率电平。 在一种设计中，发射机可以确定用于发射功率决策导频的一组时间 - 频率资源，基于用于数据传输的发射功率电平确定功率决定导频的发射功率电平，并发射功率 决定导频关于时间 - 频率资源的集合，以指示在随后的时间 - 频率资源上用于数据传输的发射功率电平。 接收机（例如，UE或基站）可以从一组发射机接收功率决策导频，并且可以基于功率决策导频来估计接收机对后续时间 - 频率资源的信道质量。

公开(公告)号：US20160226561A9

公开(公告)日：2016-08-04

申请号：US14027021

申请日：2013-09-13

Applicant: QUALCOMM Incorporated

Inventor： Jilei Hou ,  Juan Montojo ,  Ravi Palanki

IPC: H04B7/02

CPC classification number: H04B7/024 ,  H04L5/0035 ,  H04L5/0048 ,  H04W72/005 ,  H04W84/04

Abstract: Aspects describe utilizing a dedicated reference signal for supporting Network MIMO, distributed MIMO, Coordinated MultiPoint, and the like. A data modulation symbol is transmitting in the same direction as a pilot modulation symbol is transmitted. Two or more wireless devices can coordinate communications such that transmission of the same pilot modulation symbol and the same data modulation symbol are transmitted to a device in different directions, each direction associated with a wireless device and intended for a particular mobile device. Cluster-specific scrambling and/or user-group specific scrambling can be employed and a scrambling code can be communicated prior to transmission of the pilot modulation symbols and data modulation symbols.

公开(公告)号：US09357354B2

公开(公告)日：2016-05-31

申请号：US13928107

申请日：2013-06-26

Applicant: QUALCOMM Incorporated

Inventor： Ravi Palanki

IPC: H04W24/00 ,  H04B1/38 ,  H04M11/04 ,  H04B1/04 ,  H04W4/02 ,  H04W64/00 ,  G01S5/02 ,  G01S5/14

CPC classification number: H04W64/00 ,  G01S5/0205 ,  G01S5/0278 ,  G01S5/14 ,  H04W4/027

Abstract: Systems, apparatus and methods disclosed herein utilize motion detection to estimate variability of positioning related metrics. In some embodiments, a method may comprise obtaining the speeds of a plurality of mobile stations in a set of mobile stations connected to an AP in a wireless network. The frequency of Round Trip Time (RTT) measurements between a mobile station in the plurality of mobile stations and the AP is increased during periods when the speed of the mobile station does not exceed a threshold. An estimate of variability may be obtained for RTT measurements for the AP.

Abstract translation: 本文公开的系统，装置和方法利用运动检测来估计定位相关度量的变异性。 在一些实施例中，一种方法可以包括获得在无线网络中连接到AP的一组移动站中的多个移动台的速度。 在移动站的速度不超过阈值的时段期间，在多个移动站中的移动站与AP之间的往返时间（RTT）测量的频率增加。 对于AP的RTT测量可以获得可变性的估计。

公开(公告)号：US09210668B2

公开(公告)日：2015-12-08

申请号：US14336508

申请日：2014-07-21

Applicant: QUALCOMM Incorporated

Inventor： Ravi Palanki ,  Junyi Li

IPC: H04W4/00 ,  H04W52/26 ,  H04W52/38 ,  H04W24/08 ,  H04W52/24 ,  H04B17/354

CPC classification number: H04W52/265 ,  H04B17/354 ,  H04W24/08 ,  H04W52/242 ,  H04W52/245 ,  H04W52/383

Abstract: Techniques for mitigating interference due to peer-to-peer (P2P) communication are described. In an aspect, a P2P UE may measure the signal strength of downlink signals from base stations and may set its transmit power based on (e.g., proportional to) the measured signal strength in order to mitigate interference to WWAN UEs communicating with base stations. In another aspect, the P2P UE may measure the signal strength of uplink signals from WWAN UEs and may set its transmit power based on (e.g., inversely proportional to) the measured signal strength in order to mitigate interference to the WWAN UEs. In one design, the P2P UE may measure the signal strength of an uplink signal from a WWAN UE, estimate the pathloss between the two UEs based on the measured signal strength, and determine its transmit power based on the estimated pathloss.

Abstract translation: 描述了用于减轻由于对等（P2P）通信引起的干扰的技术。 在一方面，P2P UE可以测量来自基站的下行链路信号的信号强度，并且可以基于（例如，与所测量的信号强度成比例）来设置其发射功率，以便减轻对与基站通信的WWAN UE的干扰。 另一方面，P2P UE可以测量来自WWAN UE的上行链路信号的信号强度，并且可以基于（例如与测量的信号强度成反比）来设置其发射功率，以便减轻对WWAN UE的干扰。 在一种设计中，P2P UE可以测量来自WWAN UE的上行链路信号的信号强度，基于测量的信号强度来估计两个UE之间的路径损耗，并且基于估计的路径损耗来确定其发射功率。

公开(公告)号：US09001742B2

公开(公告)日：2015-04-07

申请号：US14081893

申请日：2013-11-15

Applicant: QUALCOMM Incorporated

Inventor： Ravi Palanki ,  Parag Arun Agashe ,  Vikram Gupta ,  Rajarshi Gupta ,  Naga Bhushan

IPC: H04W4/00 ,  H04L12/28 ,  H04W56/00

CPC classification number: H04W56/0015

Abstract: A method for synchronizing a wireless communication system is disclosed. A silence duration for a base station is determined based on the time required for a neighbor base station to obtain or maintain synchronization. All transmissions from the base station are ceased for the silence duration. Multiple base stations level may cease transmissions at the same time, thus mitigating interference.

Abstract translation: 公开了一种同步无线通信系统的方法。 基于相邻基站获得或维持同步所需的时间来确定基站的静默持续时间。 来自基站的所有传输在静默持续时间内停止。 多个基站级别可以同时停止传输，从而减轻干扰。