Patent · US Active

Time synchronization of femtocell

US8213391B2 · kind B2 · utility

2Cited by

25References

10Claims

0Family size

Assignees

Inventors

Stanislaw Czaja · Irvine, US
Mark E. Davis · Blacksburg, US
Anthony Lee · San Diego, US
Sang Gook Kim · San Diego, US
Li-Hsiang Sun · San Diego, US

Key dates

Filing date	Jun 23, 2008
Grant date	Jul 3, 2012
Priority date	—
Expiry date	Jun 25, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04W84/045
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Time synchronization of an access point base station. The method may include receiving an assignment message from a service provider comprising a plurality of parameters. The plurality of parameters may include an access point base station frequency assignment, a network identifier, an access point base station identifier, a neighbor list, a PN offset, and/or a scrambling code. The access point base station may then synchronize with the macro base station. Synchronizing may include searching for a strongest macro base station in the neighbor list, synchronizing a long code of the access point base station to the macro base station, estimating a propagation delay between the macro base station and the access point base station, and initializing a state of the access point base station PN code using the propagation delay to provide system time synchronization.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.