摘要:
A positioning method that calculates a lower accuracy positioning solution and applies an offset to the lower accuracy positioning solution to form a final positioning solution if a higher accuracy positioning solution is unavailable. The offset represents a difference between the lower accuracy positioning solution and the higher accuracy positioning solution at a point in time when the higher accuracy positioning solution was last available.
摘要:
A method and apparatus for providing an alert on a portable communication device such as a user equipment (UE) entering an alerting area is provided. The UE runs a GPS engine continuously to estimate the location of the UE from the time the alert system is activated. The method and apparatus provide an alert system on a UE by calculating the distance between the UE and alerting area. Further, the method and apparatus enable using different positioning systems based on the distance of the UE from the alerting area, thereby reducing the power consumption of the UE battery.
摘要:
A method of determining an indication of the position of an electronic device. The method comprises: obtaining (100) information relating to a radio signal received by the device, the radio signal comprising transmissions from one or more satellites of a satellite-positioning system, from which information an inference can be made about the true position of the device at the time the signal was received; obtaining (110) a plurality of hypotheses about the true position of the device; evaluating (120, 130, 140) the plurality of hypotheses, comprising assessing a degree of consistency between the information relating to the radio signal and the hypotheses; based on the outcome of the evaluations, selecting (150) one or more of the hypotheses; and outputting (160) an indication of the selected one or more hypotheses.
摘要:
A method for calculating position or time of a GPS receiver, a device, and a GPS receiver are provided, the method comprising: providing pseudoranges that estimate the range of the GPS receiver to a plurality of GPS satellites; providing an estimate of position of the GPS receiver; and computing absolute time using the pseudoranges and the position estimate.
摘要:
The present invention relates to mobile multiple access communication. More particularly it (54) relates to novel features in mobile multiple access communication system (50).