Patent ID: 11968587
Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A mobility management method, applied to an NG-RAN (Next Generation-Radio Access Network) of a non-ground mobile communication network, wherein the mobility management method comprises:
sending, to a terminal, a configuration message for the terminal to carry out neighbor cell signal measurement and position measurement, such that the terminal reports, according to the configuration message, neighbor cell signal strength and terminal position information, wherein the terminal position information comprises GPS (Global Positioning System) position information of the terminal;
wherein the configuration message that is sent to the terminal is used for the terminal to carry out the terminal position information measurement, and the configuration message comprises the terminal position information, or terminal moving information and the terminal position information, and a reporting occasion of the configuration message; and
the terminal moving information comprises moving speed, a moving direction and a type of the terminal, and the reporting occasion is a moment in the condition that a moving state of the terminal is rapidly changed or a reporting period;
determining, according to position information of the NG-RAN and a measurement report that is sent by the terminal upon the terminal determining the reporting occasion has arrived, whether a specified condition allowing the terminal to carry out a neighbor cell handover is satisfied, after the measurement report, which is reported by the terminal and comprises the neighbor cell signal strength or the terminal position information, is received; and
sending a cell handover message to the terminal to handover the terminal from a current cell of the non-ground mobile communication network to a target cell of a ground mobile network, when the specified condition allowing the terminal to carry out the neighbor cell handover is satisfied, wherein the specified condition is a condition allowing the terminal to carry out the neighbor cell handover;
wherein the sending the cell handover message to the terminal, when the specified condition allowing the terminal to carry out the neighbor cell handover is satisfied, comprises:
predicting, according to the terminal position information in the measurement report and a moving speed and the positioning information of the NG-RAN, or according to the terminal position information and the terminal moving information as well as the moving speed and positioning information of the NG-RAN, a time range in which the terminal reaches an area co-covered by the current cell and the target cell, wherein the predicting comprises:
within a specified time range, predicting, according to the moving speed and positioning information of the NG-RAN, a moving track, of a cell corresponding to each beam in the NG-RAN of the non-ground mobile communication network, on the ground;
within the specified time range, predicting a moving track of the terminal according to the terminal position information or the terminal position information and the terminal moving information; and
determining, according to the moving track of the cell corresponding to each beam in the NG-RAN of the non-ground mobile communication network, on the ground, and the moving track of the terminal, the time range in which the terminal reaches the area co-covered by the current cell and the target cell; and
sending the cell handover message to the terminal to handover the terminal from the current cell of the non-ground mobile communication network to the target cell of the ground mobile network on the condition that a specified moment within the time range is reached.