Andrew Corporation

Nortel Networks Corporation

James Winterbottom

Martin Wyville Thomson

Martin Dawson

Martin Thomson

Gary Neil Justusson

Eddy Corbett

A system and method for determining the location of a target device attached to an access network connected to a location server, the location server having a plurality of access networks connected thereto. A location request may be received for a target device whereby the target device is identified as a function of one or more parameters. An access network may be identified from the plurality of access networks to which the target device is attached as a function of the one or more parameters. Each access network in the plurality of access networks connected to the location server may be assigned one or more logical identifiers by which an individual location request may be allocated to the respective access network. An estimated location of the target device may then be determined as a function of the one or more logical identifiers using a location algorithm appropriate for the identified access network.

System and method for providing location services for multiple access networks from a single location server

A disclosed method uses the results of location queries to tune the value of measurements of a property to obtain a statistically representative measurement for geo location. As location requests arrive, a current measurement value associated with the serving area or location is used to determine the number of measurements to obtained; the resulting uncertainty is mapped against the number of measurements required to determine that value. If additional measurements are required to achieve the target uncertainty in the result, this is recorded. The process relies on empirical observations and has the additional advantage of being blind to the actual network topology. This approach by its own nature automatically takes into account network changes whether known or unknown.

Location measurement acquisition adaptive optimization

The present subject matter discloses a method for estimating dilution of precision (DOP) across a service area. A Monte Carlo simulation is used to determine the DOP across a service area. Random points are selected across a service area and as well as the radio transmitters who signals are capable of being received at the random points are determined. Using the network topology of radio transmitters, a DOP is calculated for each of the random points. DOP is modeled for the service area as a function of the calculated DOP for each of the random points. The modeled DOP is used to determined the measurement accuracy required for subsequent location requests.

Location measurement acquisition optimization with Monte Carlo simulation

An extension to the Location Information Service (LIS) architecture uses a centralized, user-selected, Privacy Profile Register (PPR) and Presence Register (PR) element, the User Privacy and Presence Register (UPPR) (also known as the Home Register (HR)). This centralized model provides access to value added services that allow the user to be located anywhere in the world by people and services of his choosing. It also provides network elements using this location information with security that the location being provided has certification.

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Gwynneville, Australia

James Winterbottom