Patent ID: 11950150
Assignee: NOKIA TECHNOLOGIES OY
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. An apparatus comprising at least one processor and at least one memory including computer instructions, when executed by the at least one processor, cause the apparatus to:
receive, by a user equipment, a handover command from a source network apparatus providing access for the user equipment to a communication network, the handover command indicating a target network apparatus for providing access for the user equipment to the communication network;
continue to exchange, by the user equipment, user plane data packets with the source network apparatus until the user equipment detaches from the source network apparatus;
after having received the handover command, perform, by the user equipment, access to the target network apparatus;
in case the target network apparatus cannot be accessed, send, by the user equipment, a connection re-establishment request to the source network apparatus without performing a random access channel access;
after having received the handover command, start, by the user equipment, a first timer for detecting that the target network apparatus cannot be accessed;
in case of having accessed the target network apparatus before the first timer expires, stop, by the user equipment, the first timer and re-initializing a second timer applied for the source network apparatus for detecting a radio link failure to zero and applying the second timer for the target network apparatus; and
in case the second timer applied for the source network apparatus expires while the first timer is running, suppress, by the user equipment, the radio link failure of the source network apparatus and report the radio link failure to the communication network while or after accessing the target network apparatus.