Patent ID: 8416678

Claim:
A method of re-establishing one or more radio bearers at a user equipment in a wireless communication system, the method comprising: establishing one or more data radio bearers and one or more signaling radio bearers; receiving a message indicating that an error has occurred in a radio bearer; and re-establishing only the radio bearer only when the radio bearer is a data radio bearer; and re-establishing all of the one or more data radio bearers and the one or more signaling radio bearers when the radio bearer is a signaling radio bearer, wherein if the message includes a value for a security-related parameter, one or more corresponding radio bearers are re-established using the received value for the security-related parameter, wherein if the message does not include any value for the security-related parameter, one or more corresponding radio bearers are re-established using a pre-defined value for the security-related parameter.