公开(公告)号：US20170227656A1

公开(公告)日：2017-08-10

申请号：US15019833

申请日：2016-02-09

Applicant: QUALCOMM Incorporated

Inventor： Urs NIESEN ,  Venkatesan NALLAMPATTI EKAMBARAM ,  Lionel Jacques GARIN ,  Jubin JOSE ,  Xinzhou WU

IPC: G01S19/47 ,  G01S19/40

CPC classification number: G01S19/47 ,  G01C21/165 ,  G01S5/163 ,  G01S19/39 ,  G01S19/40

Abstract: A method of determining a trajectory of a mobile platform includes obtaining a satellite positioning system (SPS) measurement from one or more SPS signals acquired by an SPS receiver of the mobile platform. The method also includes obtaining a visual-inertial odometry (VIO) measurement of the mobile platform from a VIO system of the mobile platform. A first position estimate of the mobile platform is determined based, at least in part, on the SPS measurement and the VIO measurement. The method then includes adjusting the first position estimate to generate a smoothed position estimate based, in part, on a smoothing parameter that controls a smoothness of the trajectory. The trajectory of the mobile platform is then determined, at least in part, using the smoothed position estimate.

公开(公告)号：US20160285935A1

公开(公告)日：2016-09-29

申请号：US15080443

申请日：2016-03-24

Applicant: QUALCOMM Incorporated

Inventor： Xinzhou WU ,  Edward Robert HALL ,  James Alan MISENER ,  Jun WANG

IPC: H04L29/06 ,  H04B1/3822

Abstract: In some cases, V2X systems may send warning messages. The warning messages may be sent over short distances. The warning messages may be useful over wider distances. Some systems may us MBMS from a V2X proximity broadcast. Electronic communications devices, such as UEs may be unaware of the MBMS. A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be an RSU. The RSU receive a V2X message from a UE. The RSU may broadcast information associated with the V2X message. The RSU may send the information associated with the V2X message to a network entity for a point-to-multipoint broadcast. The method, an apparatus, and a computer program product for wireless communication may also use V2X messages that include bootstrapping information to tune to an MBMS broadcast.

Abstract translation: 在某些情况下，V2X系统可能会发送警告消息。 警告信息可能会在短距离内发送。 警告信息可能在较宽的距离内有用。 某些系统可能使用从V2X近距离广播的MBMS。 诸如UE之类的电子通信设备可能不知道MBMS。 提供了一种用于无线通信的方法，装置和计算机程序产品。 该装置可以是RSU。 RSU从UE接收V2X消息。 RSU可以广播与V2X消息相关联的信息。 RSU可以将与V2X消息相关联的信息发送到网络实体用于点对多点广播。 用于无线通信的方法，装置和计算机程序产品还可以使用包括自举信息的V2X消息来调谐到MBMS广播。

公开(公告)号：US20160277888A1

公开(公告)日：2016-09-22

申请号：US14751480

申请日：2015-06-26

Applicant: QUALCOMM Incorporated

Inventor： Urs NIESEN ,  Venkatesan NALLAMPATTI EKAMBARAM ,  Jubin JOSE ,  Xinzhou WU

IPC: H04W4/02 ,  H04L12/26

CPC classification number: H04W4/023 ,  G01S13/765 ,  H04L43/0852 ,  H04W56/002

Abstract: Clock drift for range estimation between a first wireless device and a second wireless device is determine before such estimation, while acceptable communication between the first device and the second device is unavailable. While acceptable communication is unavailable, a relative clock drift Δ01 between a relative wireless device and the first device is obtained by the second device; a relative clock drift Δ20 between the second device and the relative wireless device is determined; and a relative clock drift Δ21 between the second device and the first device is estimated based on the relative clock drift Δ01 and the relative clock drift Δ20. Once acceptable communication is available, a distance between the first device and the second device is estimated based on the relative clock drift Δ21.

Abstract translation: 在这种估计之前确定第一无线设备和第二无线设备之间的距离估计的时钟漂移，而第一设备和第二设备之间可接受的通信是不可用的。 虽然可接受的通信不可用，但通过第二设备获得相对无线设备与第一设备之间的相对时钟漂移Δ01; 确定第二装置和相对无线装置之间的相对时钟漂移Δ20; 并且基于相对时钟漂移Δ01和相对时钟漂移Δ20来估计第二装置和第一装置之间的相对时钟漂移Δ21。 一旦可接受的通信可用，基于相对时钟漂移Δ21来估计第一设备和第二设备之间的距离。

公开(公告)号：US20160202350A1

公开(公告)日：2016-07-14

申请号：US14593864

申请日：2015-01-09

Applicant: QUALCOMM Incorporated

Inventor： Jubin JOSE ,  Xinzhou WU ,  Thomas Joseph RICHARDSON

IPC: G01S11/06 ,  H04W52/54

CPC classification number: G01S11/06 ,  H04B17/27 ,  H04L27/26 ,  H04W52/16 ,  H04W52/325 ,  H04W52/54

Abstract: Provided are apparatus and methods for ranging between a plurality of wireless devices. An exemplary method includes, at a first wireless device, transmitting a primary portion symbol comprising a first packet and transmitting a secondary portion symbol. The secondary portion symbol is transmitted simultaneously at a lower transmit power than the primary portion symbol, and the secondary portion symbol comprises a second packet identical to the first packet. The primary portion symbol can be transmitted in a first channel having a substantially 20 MHZ bandwidth and the secondary portion can be transmitted in a second channel having a substantially 20 MHZ bandwidth. The first and second channels are substantially adjacent in frequency. After transmitting the primary portion symbol, for example, a high-throughput long-training-field symbol or a very-high-throughput long-training-field symbol can be repetitively transmitted. This exemplary method enhances time-of-arrival estimation accuracy, minimizes decoding bottlenecking, and maximizes wireless device range.

Abstract translation: 提供了用于在多个无线设备之间进行测距的装置和方法。 一种示例性方法包括在第一无线设备处发送包括第一分组并发送次要部分符号的主要部分符号。 次要部分符号以比主要部分符号更低的发射功率同时传输，并且次要部分符号包括与第一分组相同的第二分组。 主要部分符号可以在具有大致20MHz带宽的第一信道中发送，并且次级部分可以在具有大致20MHz带宽的第二信道中传输。 第一和第二通道在频率上基本相邻。 在发送主要部分符号之后，例如，可以重复地发送高吞吐量长训练字段符号或非常高吞吐量的长训练字段符号。 该示例性方法增强了到达时间估计精度，使解码瓶颈最小化，并使无线设备范围最大化。

公开(公告)号：US20150066422A1

公开(公告)日：2015-03-05

申请号：US14476482

申请日：2014-09-03

Applicant: QUALCOMM Incorporated

Inventor： Lei ZHANG ,  Sichao YANG ,  Shankar SADASIVAM ,  Sundar SUBRAMANIAN ,  Xinzhou WU

IPC: A61B5/11 ,  G01P15/00 ,  G01P13/00

CPC classification number: A61B5/1123 ,  A61B5/1118 ,  A61B5/1126 ,  G01C22/006 ,  G01P13/00 ,  G01P15/00

Abstract: Disclosed is an apparatus and method for classifying a motion state of a mobile device. In one embodiment, accelerometer data representing acceleration components along orthogonal x, y, and z axes of the mobile device are collected. A presence or absence of a half-step frequency relationship between the accelerometer data is determined. Last, the motion state of the device is determined based at least in part on the presence or absence of the half-step frequency relationship.

Abstract translation: 公开了一种用于对移动设备的运动状态进行分类的装置和方法。 在一个实施例中，收集表示沿着移动设备的正交x，y和z轴的加速度分量的加速度计数据。 确定加速度计数据之间是否存在半步频率关系。 最后，至少部分地基于半步频率关系的存在或不存在来确定设备的运动状态。

公开(公告)号：US20140370801A1

公开(公告)日：2014-12-18

申请号：US13917451

申请日：2013-06-13

Applicant: QUALCOMM Incorporated

Inventor： Sichao YANG ,  Sundar SUBRAMANIAN ,  Xinzhou WU ,  Junyi LI

IPC: H04H20/55 ,  H04H20/08

CPC classification number: H04H20/55 ,  G08G1/163 ,  H04H20/08

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives a first BSM from a first wireless communication device, determines control information associated with the first BSM, and transmits the first BSM to at least a second wireless communication device based on the determined control information.

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。 该设备从第一无线通信设备接收第一BSM，确定与第一BSM相关联的控制信息，并且基于所确定的控制信息将第一BSM发送到至少第二无线通信设备。