Sprint Communications Comapny L.p.

Phyllis Joan Reuther

Hui Zang

Kosol Jintaseranee

Soshant Bali

Sara Gatmir-Motahari

Mark Evans

A method, system, and medium are provided for refining an estimated location of a user using an accurate location associated with a friend of the user. A location of the user is estimated with a first level of accuracy, and the friend of the user is identified. A location of the friend is determined with a level of accuracy greater than that of the user's location. A probability that the user is near the friend is determined, and when the probability exceeds a predetermined threshold, the friend's location is used to refine the user's location.

User localization using friend location information

A frequent location determination system to identify a location frequented by a wireless communication device comprises a processing system. The processing system is configured to process network usage data for the wireless communication device to identify a cell sector in a wireless communication network that is used by the wireless communication device more than a plurality of other cell sectors in the wireless communication network. The processing system is further configured to process user data transferred by the wireless communication device from the cell sector to identify Global Positioning System (GPS) data, and to process the GPS data to determine a subset of the GPS data that indicates locations in the cell sector. The processing system is further configured to process the subset of the GPS data that indicates the locations in the cell sector to determine a frequent location of the wireless communication device within the cell sector.

Identification of frequent locations of a wireless communication device

A method, system, and medium are provided for estimating a location of a user using location information of the user's friends. The user's friends are identified, and a social-interaction strength between the user and each of the friends is determined. This results in a set of weights of social ties that respectively indicate a level of social interaction between the user and the user's friends. The location of the friends is determined. The user's location is estimated based on the set of weights of social ties and the friend locations.

Embodiments disclosed herein provide systems and methods for determining whether a wireless device has departed a femtocell. In a particular embodiment, a method provides determining one or more wireless devices that are registered with a wireless femtocell and are not currently exchanging communications with the wireless femtocell. If a control signal from at least one wireless base station is available, the method provides receiving the control signal and processing the control signal to determine whether a portion of the wireless devices are registered with the at least one wireless base station. The method further provides indicating that the portion of the wireless devices registered with the at least one wireless base station are no longer registered with the wireless femtocell.

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Phyllis Joan Reuther