LTE user equipment positioning system and method
AssigneeAndrew Corporation
InventorsAriful Hannan, Khalid W. Al-Mufti
Life of this patent
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Abstract
A method of determining the location of a mobile device in a communications network having a plurality of nodes, one of the plural nodes serving the device. Observed positioning measurements for a mobile device may be received from the serving node and uplink enhanced cell identification (E-CID) positioning measurements received from the mobile device. One or more ranges between ones of the plural nodes and the mobile device may then be determined as a function of the received observed positioning measurements and the received uplink E-CID positioning measurements. A geographic location of the mobile device may then be estimated as a function the determined one or more ranges.
Claims23
A method of determining the location of a mobile device in a communications network having a plurality of nodes comprising the steps of:
- (a) receiving observed positioning information for a mobile device from one or more nodes;
- (b) determining downlink transmission time of a signal from the one or more nodes as a function of the received observed positioning information;
- (c) receiving uplink positioning information from the mobile device;
- (d) determining a propagation delay between a node serving the mobile device and the mobile device as a function of the received uplink positioning information;
- (e) determining downlink timing information from the serving node as a function of the determined downlink transmission time and the determined propagation delay;
- (f) determining one or more ranges between additional nodes and the mobile device as a function of the determined downlink transmission time and the determined downlink timing information;
- and
- (g) determining a location of the mobile device as a function the determined one or more ranges and the determined propagation delay.
A method of determining the location of a mobile device in a communications network having a plurality of nodes, one of the plural nodes serving the device comprising the steps of:
- (a) receiving observed positioning measurements for a mobile device from the serving node;
- (b) receiving uplink enhanced cell identification (E-CID) positioning measurements from the mobile device;
- (c) determining one or more ranges between ones of the plural nodes and the mobile device as a function of the received observed positioning measurements and the received uplink E-CID positioning measurements;
- and
- (d) determining a geographic location of the mobile device as a function the determined one or more ranges.
A method of determining the location of a mobile device in a communications network having a plurality of nodes comprising the steps of:
- (a) receiving observed time difference of arrival (OTDOA) measurements for a mobile device from one or more of the plural nodes;
- (b) receiving uplink enhanced cell identification (E-CID) positioning measurements from the mobile device;
- (c) determining one or more ranges between the plural nodes and the mobile device as a function of the received OTDOA measurements and received uplink E-CID positioning measurements;
- (d) adjusting each determined range as a function of a metric;
- and
- (e) determining a geographic location of the mobile device as a function the adjusted ranges.
Dependencies are inferred from the claim text.