Method of Determining a Radio Link Failure Associated with a Handover of a User Equipment for a Source Access Node to a Target Access Node, Access Node for Determining a Radio Link Failure Associated with a Handover of a User Equipment from a Source Access Node to a Target Access Node, and User Equipment

[0085]The illustration in the drawings is schematic. It is noted that in different figures, similar or identical elements are provided with the same reference signs.

[0086]In the following, methods of determining a RLF based on absolute time information and relative time information will be explained. For explanation purposes, it will be assumed that a too early handover RLF has occurred subsequent to a handover from a user equipment from a source access node to a target access node. However, the described analysis of the kind of RLF will also apply to other kind of radio link failures such as a too late handover or a handover to a wrong cell. The communications architecture shown in FIG. 2, 3 are similar to the communications architecture shown in FIG. 1.

[0087]Referring to FIG. 2, a user equipment 10 is initially attached to a source access node 12 as indicated by step 1. Handover negotiations between the user equipment 10, the source access node 12 and the target access node 14 are de