Patent ID: 9526082
Filing Date: 2016-12-20
CPC Classification: G01C,G01S,H04W

Claim Text:
1. A method of estimating a location of a pedestrian, comprising: requesting, by a positioning server, sensor-based positioning capabilities from a mobile User Equipment (UE) having sensors; providing, by the mobile UE, the sensor-based positioning capabilities including at least one of a capability to provide the positioning measurement information and a capability to use the positioning assistance information to the positioning server; generating, by the mobile UE having sensors, positioning measurement information; requesting, by the mobile UE, positioning assistance information from the positioning server; generating, by the positioning server, the positioning assistance information; providing, by the positioning server, the positioning assistance information to the mobile UE; and performing, by the mobile UE, location estimation of the pedestrian using the positioning measurement information and the positioning assistance information, wherein the positioning assistance information includes pedestrian states and parameters corresponding to the pedestrian states, wherein the pedestrian states include at least one of walking-horizontal, walking-down-slope, walking-up-slope, walking-up-stair, walking-down-stair, running-horizontal, running-down-slope, running-up-slope, running-up-stair, and running-down-stair, wherein the parameters include at least one of a step frequency coefficient and nominal value, a peak difference of acceleration norm coefficient and nominal value per step length, a variance of acceleration norm coefficient and nominal value per step length, a peak of gyro norm coefficient and nominal value per step length, and a variance of gyro norm coefficient and nominal value per step length, and wherein requesting the positioning assistance information includes sending an assistance information request message including pedestrian state information and request model information of the mobile UE to the positioning server.