Patent ID: 9100908
Filing Date: 2015-08-04
Classification: H04L,H04W

Abstract:
1. A method for Hyper Frame Number (HFN) synchronization in a wireless communication system comprising: if re-establishment of a Radio Link Control (RLC) entity occurs during a pending RLC reset procedure, aborting the pending RLC reset procedure and performing the re-establishment of the RLC entity; incrementing a first RC variable included in a RESET Packet Data Unit (PDU); restarting the pending RLC reset procedure; transmitting the RESET PDU including the incremented first RC variable and a Reset Sequence Number (RSN); receiving a RESET ACKnowledgement (ACK) PDU for the RESET PDU including a second RC variable; checking the second RC variable included in the received RESET ACK PDU; and processing the received RESET ACK PDU based on the checking result.