Wireless communication device capable of accurately performing position estimations

摘要

A wireless communication device capable of more accurately estimating its location in an indoor environment is disclosed. In an indoor environment, the wireless communication device may seek to generate a fingerprint map so as to later identify its location within the environment. However, the map requires the device to at least estimate its current position. Therefore, the device includes one or more sensors to identify each of a bearing and a speed of the device. For example, the speed may be determined based on sensed steps and a stored step length. This information may then be used to estimate the device's location as it moves through the indoor environment.

主权项

1. A wireless communication device capable of estimating a position of the wireless communication device in a limited communication environment, the wireless communication device comprising:
a Global Navigation Satellite System (GNSS) module configured to receive GNSS signals prior to entering the limited communication environment; a sensor module configured to sense heading and speed information of the wireless communication device within the limited communication environment; and a calculation module configured to:
calibrate the heading and speed information sensed by the sensor module based on the received GNSS signals prior to entering the limited communication environment;determine an initial position based on the GNSS signals; andestimate the position of the wireless communication device based on the calibrated heading and speed information and the initial position.