Systems and methods for radio node synchronization based on range calculations

摘要

A radio node for updating a local timing parameter based on a message from a remote node includes a processing circuit and receiver. The receiver is configured to receive the message and to provide the message to the processing circuit. The processing circuit is configured to determine an expected time of arrival for the received message using an estimation of range between the radio node and the remote node. The processing circuit is further configured to obtain an estimate of a timing error for the radio node by comparing the expected time of arrival with the actual time of arrival. The processing circuit is further configured to determine a timing error quality using position uncertainty information and time uncertainty information received from the remote node with the received message.

主权项

1. A radio node for updating a local timing parameter based on a message from a remote node, the radio node comprising:
a processing circuit; and a receiver configured to receive the message and to provide the message to the processing circuit; wherein the processing circuit is configured to determine an expected time of arrival for the received message using an estimation of range between the radio node and the remote node; wherein the processing circuit is further configured to obtain an estimate of a timing error for the radio node by comparing the expected time of arrival with the actual time of arrival; wherein the processing circuit is further configured to determine a timing error quality using position uncertainty information and time uncertainty information of the remote node received from the remote node with the received message; wherein the processing circuit is further configured to update the local timing parameter based on the calculated timing error and the calculated timing error quality, the processing circuit configured to estimate the range between the radio node and the remote node using position information included with the received message and of the location of the remote node and using a location for the radio node, the processing circuit configured to disregard the timing error when the calculated timing error quality is high; and wherein the processing circuit varies a weight of the calculated timing error on the update of the local timing parameter utilizing the calculated timing error quality.