公开(公告)号：US09756589B2

公开(公告)日：2017-09-05

申请号：US15001946

申请日：2016-01-20

Applicant: Sprint Spectrum L.P.

Inventor： Walter Rausch ,  Durga Prasad Satapathy

IPC: H04W56/00 ,  G01S5/02 ,  G01S5/08 ,  H04B17/318 ,  H04W88/08

CPC classification number: H04W56/002 ,  G01S5/021 ,  G01S5/0242 ,  G01S5/08 ,  H04B17/318 ,  H04W56/0045 ,  H04W56/005 ,  H04W88/08

Abstract: Exemplary methods and systems may generally be implemented to allow a macro-network base station without access to a GPS reference signal to provide some or all of the functionality for which existing macro-network base stations typically rely on GPS. In a first aspect, an exemplary macro-network base station may determine its location using a location-determination technique that is based upon the angles of arrival of FM radio signals from nearby FM stations. In a second aspect, an exemplary macro-network base station may stabilize its local oscillator by phase-locking its local oscillator to an FM radio signal, and periodically adjusting its local oscillator to account for phase drift of the FM radio signal. And in a third aspect, an exemplary macro-network base station may synchronize its frame-start timing with a nearby base station using a frame-start timing signal that the base station has synchronized to frame transmissions from the nearby base station during a setup routine.

公开(公告)号：US20160157198A1

公开(公告)日：2016-06-02

申请号：US15001946

申请日：2016-01-20

Applicant: Sprint Spectrum L.P.

Inventor： Walter Rausch ,  Durga Prasad Satapathy

IPC: H04W56/00 ,  G01S5/02 ,  H04B17/318

CPC classification number: H04W56/002 ,  G01S5/021 ,  G01S5/0242 ,  G01S5/08 ,  H04B17/318 ,  H04W56/0045 ,  H04W56/005 ,  H04W88/08

Abstract: Exemplary methods and systems may generally be implemented to allow a macro-network base station without access to a GPS reference signal to provide some or all of the functionality for which existing macro-network base stations typically rely on GPS. In a first aspect, an exemplary macro-network base station may determine its location using a location-determination technique that is based upon the angles of arrival of FM radio signals from nearby FM stations. In a second aspect, an exemplary macro-network base station may stabilize its local oscillator by phase-locking its local oscillator to an FM radio signal, and periodically adjusting its local oscillator to account for phase drift of the FM radio signal. And in a third aspect, an exemplary macro-network base station may synchronize its frame-start timing with a nearby base station using a frame-start timing signal that the base station has synchronized to frame transmissions from the nearby base station during a setup routine.

Abstract translation: 通常可以实现示例性方法和系统以允许宏网基站不访问GPS参考信号来提供现有宏网基站通常依赖于GPS的一些或所有功能。 在第一方面，示例性宏网基站可以使用基于来自附近FM站的FM无线电信号的到达角度的位置确定技术来确定其位置。 在第二方面，示例性宏网基站可以通过将其本地振荡器相位锁定到FM无线电信号来稳定其本地振荡器，并周期性地调整其本地振荡器以考虑FM无线电信号的相位漂移。 并且在第三方面中，示例性宏网基站可以使用基站已经同步的帧开始定时信号来将其帧起始定时与附近的基站同步，以在建立程序期间从附近的基站帧传输 。