MANAGING UE'S E-UTRAN CAPABILITY DUE TO ACCESS STRATUM RESELECTION OR HANDOVER�

摘要

A METHOD OF MANAGING E-UTRAN CAPABILITY OF A USER EQUIPMENT DURING RESELECTION The present invention provides a method of managing E-UTRAN capability of a user equipment. According to one embodiment, the method comprises of switching from a first radio access technology (RAT) to a second RAT associated with a first PLMN when the first RAT fails to provide CS services to the UE. The UE establishes a CS call session with the second RAT. In the meanwhile, the UE receives a Handover command to move to a second PLMN. The UE may also perform reselection to move to a second PLMN in case of a data session. The UE moves from the first PLMN to the second PLMN to continue the PS/CS call session with a second RAT associated with the second PLMN. The UE enables the E-UTRAN capability after moving to the second PLMN to connect with a first RAT available in the second PLMN. Figure 3A and 3B