Patent ID: 8060108

Claim:
A method operable by a mobile station, the method comprising: generating a sequence of location data points indicating location of the mobile station over time, and transmitting the sequence to a mapping device, wherein the sequence has a dynamic state in which the data points of the sequence vary over time as the mobile station receives varying information from satellites and uses the information to generate the location data points, and the sequence has a static state in which the data points of the sequence are substantially unchanging over time; detecting a loss of satellite communication, and responsively transitioning the sequence from the dynamic state to the static state, wherein transitioning the sequence from the dynamic state to the static state comprises transitioning to have the location data points of the sequence be a substantially constant repetition of each other, whereby the sequence in the static state received by the mapping device thereby indicates substantially no change in position of the mobile station over time; and while transmitting the sequence in the static state, detecting transition of the mobile station in cellular network service, and responsively (i) obtaining satellite-assistance data from a cellular radio access network, (ii) using the obtained satellite-assistance data to engage in satellite communication, and (iii) transitioning the sequence from the static state to the dynamic state.