Abstract: Methods, systems and computer program products for determining a location of a device based on location information are described. In some implementations, location assist information may be requested so as to determine a location of sufficient quality to satisfy a requesting application. Upon receiving the location assist information, empherides from one or more visible sources may be requested. The location assist information may be used to determine the location of the device until the device has received and decoded the empherides.

Abstract: Methods, systems and computer program products for determining a location of a device based on location information are described. In some implementations, location assist information may be requested so as to determine a location of sufficient quality to satisfy a requesting application. Upon receiving the location assist information, empherides from one or more visible sources may be requested. The location assist information may be used to determine the location of the device until the device has received and decoded the empherides.

Abstract: Methods, systems and computer program products for determining a location of a device based on location information are described. In some implementations, location assist information may be requested so as to determine a location of sufficient quality to satisfy a requesting application. Upon receiving the location assist information, empherides from one or more visible sources may be requested. The location assist information may be used to determine the location of the device until the device has received and decoded the empherides.

Abstract: Methods, systems, apparatus, and computer program products are provided to harness massively distributed, but locally available location, application usage, device usage, network and overall Radio Frequency (RF) systems awareness, processing, memory and connectivity from mobile devices in a manner which would broadly characterize the environments these mobile devices operate within given the capabilities of each type of mobile device to contribute information about its local environment.

Abstract: Methods, systems and computer program products for providing an adaptive active location information gathering algorithm are described. Specifically, significant information density gains can be achieved by using an adaptive active location information gathering algorithm. The adaptive algorithm may select a compression and decompression encoding appropriate to deliver maximum information density while being adjusted automatically to accommodate variations including velocity and duration changes within a defined reporting period to ensure versatility and maximum efficiency.