| 摘要 |
System and method for submitting a location of a mobile device to a public service for providing emergency assistance are described. A mobile device can determine that a user is making an emergency call from the mobile device. The mobile device can then enable a location determination function of the mobile device and determine a location of the mobile device. The mobile device can determine the location in multiple attempts, including, in a first time window, attempting to determine a location with low uncertainty and, if the attempt fails, determining a location with high uncertainty in a second time window. The mobile device can then submit the location to a dispatcher through a mobile network operator. |
| 主权项 |
1. A method comprising:
receiving, by a mobile device, a user input for requesting emergency assistance from a public service; starting a first timer that defines a first time window, wherein, in the first time window, the mobile device attempts to determine a location of the mobile device that satisfies a first uncertainty threshold and a first reliability threshold; upon failure to determine the location in the first time window that satisfies both the first uncertainty threshold and the first reliability threshold, starting a second timer that defines a second time window, wherein, in the second time window, the mobile device attempts to determine a location of the mobile device that satisfies a second uncertainty threshold that is easier to satisfy than the first uncertainty threshold and a second reliability threshold that is easier to satisfy than the first reliability threshold; and upon successful determination of the location in the second time window, providing, by the mobile device, the location and a value representing the uncertainty of the location to a mobile network operator for submitting to the public service. |
