Autonomous transmit chain delay measurements
First Claim
1. A method of determining transmission delay in a communications network having a plurality of nodes comprising the steps of:
- (a) receiving satellite positioning information for a mobile device, the received satellite positioning information including System Frame Number (SFN) information;
(b) receiving observed time difference of arrival (OTDOA) measurements for a mobile device from one or more of the plural nodes;
(c) determining a location of the mobile device as a function of the received satellite positioning information;
(d) determining a Global Positioning System (GPS) time estimate as a function of the determined location of the mobile device; and
(e) determining transmission delay between a node serving the mobile device and an antenna serving the mobile device as a function of the received OTDOA measurements and determined GPS time estimate.
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Accused Products
Abstract
A system and method for determining transmission delay in a communications system. In some embodiments, satellite positioning information having System Frame Number (SFN) information may be received for a mobile device and observed time difference of arrival (OTDOA) measurements may be received for a mobile device. A location of the mobile device may be determined as a function of the received satellite positioning information. A Global Positioning System (GPS) time estimate may be determined as a function of the determined location of the mobile device. Transmission delay between a node serving the mobile device and an antenna serving the mobile device may be determined as a function of the received OTDOA measurements and determined GPS time estimate.
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Citations
9 Claims
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1. A method of determining transmission delay in a communications network having a plurality of nodes comprising the steps of:
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(a) receiving satellite positioning information for a mobile device, the received satellite positioning information including System Frame Number (SFN) information; (b) receiving observed time difference of arrival (OTDOA) measurements for a mobile device from one or more of the plural nodes; (c) determining a location of the mobile device as a function of the received satellite positioning information; (d) determining a Global Positioning System (GPS) time estimate as a function of the determined location of the mobile device; and (e) determining transmission delay between a node serving the mobile device and an antenna serving the mobile device as a function of the received OTDOA measurements and determined GPS time estimate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification