| 主权项 |
1. A method, comprising:
registering an evolved packet system tracking area of a mobile node to a mobility management node by a base station node; determining a location area of a fallback system based on a location of the mobile node; registering the location area of the mobile node to a visitor location register of the fallback system, the fallback system comprising at least one of the Global System of Mobile Communications, the Universal Mobile Telecommunication System and the Code Division Multiple Access 2000; receiving, by the base station node, a request to perform user plane bearer establishment through the fallback system; obtaining, by the base station node, radio measurements associated with at least two candidate cells from the mobile node; checking, by the base station node, the at least two candidate cells for at least one cell associated with the location area registered to the visitor location register; selecting, by the base station node, a cell among the at least one cell associated with the location area registered to the visitor location register, in case the cell associated with the location area registered to the visitor location register provides at least an absolute minimum value for at least one respective radio parameter or the cell associated with the location area registered to the visitor location register does not have at least one radio parameter value exceeding at least one respective radio parameter threshold indicating how much worse the at least one radio parameter value may be in the cell associated with the location area registered to the visitor location register to select the cell associated with the location area registered to the visitor location register instead of a cell providing the best at least one respective radio parameter value; indicating the selected cell to the mobile node; and providing at least one of a handover request, a cell change order and a request for a redirection to the mobile node. |
