DETERMINING A LOCATION OF A TRANSMITTER DEVICE

摘要

Various embodiments determine a position of a wireless device and enable the wireless device to retrieve the determined location. In one embodiment, a system comprises of at least one wireless transmitting device, a plurality of wireless receivers, and at least one server. Each of the plurality of wireless devices receive signals from the wireless transmitting device with unknown position and send time stamped information to the server. Each of the plurality of wireless device also sends unique identifying information about the wireless transmitting device. The server calculates a position of the wireless transmitting device by considering the inputs received from the plurality of wireless receivers. The wireless device obtains its position from the server. The process can be executed on demand, or at regular, frequent intervals.

主权项

1. A method, with a server system, for determining a position of a portable electronic device, the method comprising:
obtaining a set of data packets from a plurality of wireless nodes, wherein each data packet in the set of data packets is associated with a positioning request from a portable electronic device; obtaining a time stamp and time offset information for each data packet in the set of data packets, wherein the time stamp is generated by a respective wireless node in the plurality of wireless nodes in response to receiving the positioning request from the portable electronic device, and wherein the time offset is associated with processing the positioning request by the wireless node; generating a normalized time stamp for each time stamp in the set of time stamps based on the time offset information associated with each time stamp; and determining a location of the portable electronic device based on each of the normalized time stamps and known position of each wireless node in the plurality of wireless nodes.