Method and apparatus for reconfiguring connection to base station at relay node in a wireless communication system

摘要

The present invention relates to a method of processing a signal in a wireless communication system. In particular, the method comprises steps of setting an indicator indicating that an integrity failure occurs and transmitting a first message associated with a connection reestablishment including the indicator to a network. The integrity failure means that data is inserted or replaced by an unauthorized third party.

主权项

1. A method of processing a signal by a relay node in a wireless communication system, the method comprising:
transmitting, by the relay node to a network, a first message associated with a connection reestablishment, wherein the first message includes an indicator indicating a connection reestablishment cause; receiving, by the relay node, a second message associated with the connection reestablishment; when the indicator indicates integrity failure on an acknowledged mode (AM) data radio bearer (DRB) as the connection establishment cause, resetting, by the relay node, a value of at least one packet data convergence protocol (PDCP) state variable associated with the AM DRB to a predetermined value according to the second message for consistency of the value of the at least one PDCP state variable between the relay node and the network, wherein the second message includes a command for resetting the at least one PDCP state variable associated with the AM DRB; and when the indicator indicates connection reestablishment cause other than the integrity failure on the AM DRB, maintaining the value of the at least one PDCP state variable, wherein the AM DRB is used for carrying at least control information from the network.