RECOVERY METHOD FOR MISSING DATA BEARER DURING HANDOFF IN A MULTI-CONNECTIVITY MODE

摘要

A method and apparatus are described for a UE to recover from a missing data bearer during handover. The UE receives, from a first Long-Term Evolution (LTE) cell, a message indicating that the UE is to attach to a second LTE cell capable of supporting dual connectivity with New Radio (NR) (DCNR). Then, the UE receives, from the second LTE cell, a message reconfiguring the UE to attach to the second LTE cell. If the message reconfiguring the UE to attach to the second LTE cell is missing at least one missing evolved packet system (EPS) bearer of one or more active EPS bearers, the UE transmits, to the second LTE cell, a tracking area update (TAU) request message. The TAU request message may include an indication that the UE supports DCNR.