Sprint Communications Comapny L.p.

Henry Burford

Seng Chai Gan

Timothy Hugh Pearson

Eric C English

Khoi Dinh Nguyen

Jason Jugar

Methods for wirelessly connecting a small cell to a grandmaster timing device are disclosed. The methods can include identifying one or more grandmaster timing devices and wirelessly requesting an IP address to enable a small cell to connect to a grandmaster timing device for time synchronization. The methods may further include selecting a grandmaster timing device based on a predetermined preference order that includes a relative preference level for different types of grandmaster timing devices.

Method for a small cell to wirelessly connect to a grandmaster timing device

Aspects of the present invention monitor an electrical circuit in a power over Ethernet ('PoE') installation to detect potential security breaches and implement a security response upon detecting the security event. The security event may be a disruption to the electrical circuit lasting more than a threshold duration (e.g., 250 ms, 0.5 second, 1 second). The disruption can be an open circuit caused by cutting or unplugging the Ethernet cable. In one aspect, the security response can be discontinuing further communications over the PoE connection.

Security for a power over ethernet installation

A method and apparatus are provided for converting a precision time protocol (PTP) to a GPS signal. Enterprise versions of Femtocells are located within buildings and do not have access to a GPS signal directly from a GPS satellite. An adapter is provided that takes an available PTP and power over Ethernet (PoE) flow and converts the signal into a pseudo-GPS signal that acts as a timing input into the Femtocell. The pseudo-GPS signal is a GPS signal modulated at the L1 band frequency or 1575.42 megahertz, but does not have location data nor subframes 1, 2, or 3, as found in an ordinary GPS signal.

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Leesburg, VA, United States of America

Henry Burford