Peer Discovery in Transactional Mobile Applications

A device, comprising:

• a transceiver configured to:
• receive, from a server, a meeting location and information for communication with a second device;
• obtain a series of location data related to the second device, wherein the location data is based on a non-device-to-device positioning;
• a memory configured to store the meeting location, the information for communication with the second device, and the series of location data related to the second device;
• and
• a controller coupled to the transceiver and the memory, the controller configured to:
• determine whether to perform a direct device-to-device positioning with the second device using the meeting location and information for communication with the second device;
• compute a series of last-stretch direct device-to-device ranges based on a series of last-stretch direct device-to-device positioning measurements between the device and the second device computed in response to a determination to perform the direct device-to-device positioning with the second device;
• and
• identify the second device based on the series of last-stretch positioning ranges approaching zero.

A non-transitory medium storing instructions for execution by one or more processors of a device, the instructions comprising:

• instructions for processing from a server, at the device, a received meeting location and information for communication with a second device;
• instructions for processing a series of received location data related to the second device, wherein the location data is based on a non-device-to-device positioning;
• instructions for determining whether to perform a direct device-to-device positioning with the second device using the meeting location and information for communication with the second device;
• instructions for performing a series of last-stretch direct device-to-device positioning measurements between the device and the second device in response to a determination to perform the direct device-to-device positioning with the second device;
• and
• instructions for identifying the second device based on a series of last-stretch positioning ranges approaching zero, wherein the series of last-stretch direct device-to-device ranges is based on the series of last-stretch device-to-device positioning measurements between the first device and the second device.

A device, comprising:

• means for receiving from a server, at the device, a meeting location and information for communication with a second device;
• means for obtaining a series of location data related to the second device, wherein the location data is based on a non-device-to-device positioning;
• means for determining whether to perform a direct device-to-device positioning with the second device using the meeting location and information for communication with the second device;
• means for performing a series of last-stretch direct device-to-device positioning measurements between the device and the second device in response to a determination to perform the direct device-to-device positioning with the second device;
• and
• means for identifying the second device based on a series of last-stretch positioning ranges approaching zero, wherein the series of last-stretch direct device-to-device ranges is based on the series of last-stretch device-to-device positioning measurements between the device and the second device.