公开(公告)号：US09351273B2

公开(公告)日：2016-05-24

申请号：US14589753

申请日：2015-01-05

Applicant: Broadcom Corporation

Inventor： Mark Buer ,  Charles Abraham ,  David Garrett ,  Jeyhan Karaoguz ,  David Lundgren ,  David Murray

IPC: H04W64/00 ,  G01S5/12 ,  G01S11/08 ,  H04W12/06 ,  H04W48/04 ,  H04W52/28 ,  H04W4/02

CPC classification number: H04W64/00 ,  G01S5/12 ,  G01S11/06 ,  G01S11/08 ,  H04W4/02 ,  H04W12/06 ,  H04W48/04 ,  H04W52/283

Abstract: A transmitting communication device may iteratively adjust its transmit power, and may estimate, based on iterative transmit power adjustment, relative location of a receiving communication device. The transmit power may be initialized to a maximum value, and the transmit power may be iteratively reduced until connectivity with the receiving communication device is lost. The loss of connectivity may be determined based on reception of responses to ping messages transmitted by the transmitting communication device. The transmitting communication device may authenticate the receiving communication device and/or a user of the receiving communication device. The authentication may comprises utilizing transmit power adjustment and/or relative location estimation therefrom to ensure that a separation between the devices does not exceed a maximum value. The transmitting communication device may generate location info associated with the receiving communication device based on the relative location estimation, and may communicate the location info to a location server.

公开(公告)号：US20130099966A1

公开(公告)日：2013-04-25

申请号：US13715527

申请日：2012-12-14

Applicant: Broadcom Corporation

Inventor： Charles ABRAHAM ,  Mark Buer ,  David Garrett ,  Jeyhan Karaoguz ,  David Albert Lundgren ,  David Murray

IPC: G01S19/05

CPC classification number: G01S19/05 ,  G01S19/27

Abstract: A communication device within a GNSS group propagates GNSS assistance data to one or more other communication devices in the GNSS group. The GNSS assistance data includes ephemeris received from one or more GNSS satellites and/or predicted ephemeris. As a source device, the communication device generates, and/or acquires from other resources such as a remote location server, the predicted ephemeris. As a destination device, the communication device receives existing GNSS assistance data from a source device and/or other communication devices in the GNSS group. A GNSS position for the communication device and corresponding time information are used to refresh the received GNSS assistance data. In instances where the communication device further acts as a relay device, the refreshed GNSS assistance data is relayed to other communication devices over wired and/or wireless direct device-to-device connections utilizing appropriate communication technologies such as WiFi, Bluetooth and/or Bluetooth low energy.

Abstract translation: GNSS组内的通信设备将GNSS辅助数据传播到GNSS组中的一个或多个其他通信设备。 GNSS辅助数据包括从一个或多个GNSS卫星和/或预测星历接收的星历。 作为源设备，通信设备生成和/或从诸如远程位置服务器的其他资源获取预测星历。 作为目的地设备，通信设备从GNSS设备和/或其他通信设备接收现有的GNSS辅助数据。 用于通信设备的GNSS位置和对应的时间信息用于刷新接收到的GNSS辅助数据。 在通信设备进一步充当中继设备的情况下，通过使用适当的通信技术（例如WiFi，蓝牙和/或蓝牙），刷新的GNSS辅助数据通过有线和/或无线直接设备到设备连接中继到其他通信设备 低能量。

公开(公告)号：US08958821B2

公开(公告)日：2015-02-17

申请号：US14010010

申请日：2013-08-26

Applicant: Broadcom Corporation

Inventor： Charles Abraham ,  Mark Buer ,  David Garrett ,  Jeyhan Karaoguz ,  David Albert Lundgren ,  David Murray

IPC: H04W24/00 ,  H04W36/32 ,  H04W36/30 ,  H04W48/18

CPC classification number: H04W36/32 ,  H04W36/30 ,  H04W48/18

Abstract: A multi-radio mobile device comprises a plurality of different radios. When a location update occurs, the multi-radio mobile device, at a specific location, acquires location-based radio information from a remote location server. The multi-radio mobile device selects a radio for use in the specific location based on the acquired location-based radio information comprising available radios in the specific location and radio weights. The radio is selected from the available radios based on the radio weights in the specific location. Transmissions of a desired service are received in the specific location utilizing the selected radio. Location-based radio measurements reports to the remote location server are generated utilizing signal strength measurements for the received signals. Radio quality information of the available radios is calculated by the location server utilizing location-based radio measurement reports from associated users. The radio weights of the available radios are determined based on the calculated radio quality information.

Abstract translation: 多无线电移动设备包括多个不同的无线电。 当发生位置更新时，在特定位置的多无线电移动设备从远程位置服务器获取基于位置的无线电信息。 多无线电移动设备基于所获取的基于位置的无线电信息选择在特定位置使用的无线电，所述无线电信息包括在特定位置和无线电权重中的可用无线电。 基于特定位置的无线电权重从可用的无线电中选择无线电。 使用所选择的无线电在特定位置接收期望业务的传输。 利用对接收信号的信号强度测量，产生到远程位置服务器的基于位置的无线电测量报告。 可用无线电的无线电质量信息由位置服务器利用来自相关用户的基于位置的无线电测量报告来计算。 可用无线电的无线电权重基于所计算的无线电质量信息来确定。