METHODS AND APPARATUS FOR CONVERTING A SINGLE RADIO-ACCESS TECHNOLOGY CONNECTION INTO A MULTIPLE RADIO-ACCESS TECHNOLOGY CONNECTION

A method for converting a single radio-access technology ("RAT") packet-data network ("PDN") connection into a multi-RAT PDN connection includes establishing a PDN connection having a first radio bearer using a first RAT, adding, using a second RAT, a second radio bearer for the PDN connection, and transmitting data packets over the PDN connection using both the first radio bearer and the second radio bearer. In some implementations, adding the second radio bearer includes generating a first traffic-flow template ("TFT") for the first radio bearer, generating a second TFT for the second radio bearer, transmitting data packets over the first radio bearer according to the first TFT, and transmitting data packets over the second radio bearer according to the second TFT.