ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,688, issued on March 18, was assigned to ZTE Corp. (Shenzhen, China).

"ONU migration detection method, OLT, ONU and storage medium" was invented by Haiming Ouyang (Shenzhen, China) and Lina Fu (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are an ONU migration detection method, OLT, ONU and storage medium. The ONU migration detection method may include: receiving first identification information from an ONU, the first identification information is configured to uniquely identify a historical position accessed by the ONU; acquiring second identification information according to a current position of the ONU, the second ide...