Patent ID: 8804671

Claim:
A method for determining a radio user equipment (UE) mobility status in a radio communications node, comprising the steps of: a-performing UE mobility status measurements associated with the UE communicating over a radio channel, where the UE mobility status corresponds to a degree of variation of the radio channel over at least one of time and frequency; b-determining a channel characteristic of the radio channel at a first time represented as a first complex domain vector; c-determining a channel characteristic of the radio channel at a second later time represented as a second complex domain vector; d-determining a channel characteristic error metric in the complex domain based on a distance between the first complex domain vector and the second complex domain vector; e-comparing the channel characteristic error metric to a predetermined threshold; and f-determining the UE mobility status based on the threshold comparison, wherein a value of the channel characteristic error metric larger than the predetermined threshold represents a higher mobility and a value of the channel characteristic error metric smaller than the predetermined threshold represents a lower mobility.