公开(公告)号：US20140141815A1

公开(公告)日：2014-05-22

申请号：US13863617

申请日：2013-04-16

Applicant: Digimarc Corporation

Inventor： Geoffrey B. Rhoads ,  Tom Tewalt ,  Hugh L. Brunk ,  Tyler J. McKinley

IPC: G01S5/00 ,  H04W24/00

CPC classification number: G01S5/0081 ,  H04W24/00 ,  H04W64/00

Abstract: A system for determining location and timing information in a cellular network includes a space-time calibration unit (SCU) and a plurality of nodes in communication with the SCU. Each node includes a node ping driver that receives frame synchronization information from a respective subset of cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local node clock. The system also includes a user handset that includes a handset ping driver that receives the frame synchronization information from a serving cell site and one or more neighbor cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local handset clock. The SCU uses the information from the node and handset ping drivers to determine a handset location.

Abstract translation: 用于确定蜂窝网络中的位置和定时信息的系统包括与SCU通信的时空校准单元（SCU）和多个节点。 每个节点包括节点ping驱动器，其从小区站点的相应子集接收帧同步信息，并且将帧同步信息与使用本地节点时钟生成的相应接收计数标记相关联。 该系统还包括用户手机，其包括从服务小区站点和一个或多个相邻小区站点接收帧同步信息的手持机ping驱动程序，并且将帧同步信息与使用本地手持机时钟生成的相应接收计数戳相关联。 SCU使用来自节点和手机ping驱动程序的信息来确定手机位置。

公开(公告)号：US09753115B2

公开(公告)日：2017-09-05

申请号：US13863617

申请日：2013-04-16

Applicant: Digimarc Corporation

Inventor： Geoffrey B. Rhoads ,  Tom Tewalt ,  Hugh L. Brunk ,  Tyler J. McKinley

IPC: G01S5/00 ,  H04W24/00 ,  H04W64/00

CPC classification number: G01S5/0081 ,  H04W24/00 ,  H04W64/00

Abstract: A system for determining location and timing information in a cellular network includes a space-time calibration unit (SCU) and a plurality of nodes in communication with the SCU. Each node includes a node ping driver that receives frame synchronization information from a respective subset of cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local node clock. The system also includes a user handset that includes a handset ping driver that receives the frame synchronization information from a serving cell site and one or more neighbor cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local handset clock. The SCU uses the information from the node and handset ping drivers to determine a handset location.