Patent ID: 9232351
Filing Date: 2016-01-05
CPC Classification: H04W

Claim Text:
1. A method for updating a location of a mobile terminal (MT) for a mobile communication network when the MT crosses a boundary of a first location-update area (LA) assigned to the MT, an initial position of the MT being regarded as a location where the MT performed a latest location update at the first LA before crossing the boundary, the method comprising: determining, by one or more computer processors in the mobile communication network, a second LA to be assigned to the MT for replacing the first LA, the second LA being characterized by a LA center and a LA size, wherein the LA center and the LA size are determined by numerically optimizing the LA center and the LA size in a sense that a mean total location-management cost predicted for the LA center and the LA size is minimized without restricting the LA center to be fixed at the initial position; wherein the LA center is located at a distance x wherein the LA size is determinable by a LA radius, denoted as R wherein the optimizing of the LA center and the LA size comprises determining x (1) generating a plurality of candidate LA-radius values; (2) for an individual candidate LA-radius value, denoted as R, determining a corresponding distance x (3) repeating the step (2) for all the candidate LA-radius values to thereby obtain plural tuples of (R, xo (4) identifying an optimal candidate pair among the plural candidate pairs such that the optimal candidate pair has the lowest value of C