Patent ID: 6982963

Claim:
A communication system configured to communicate with a mobile station operable in accordance with a predetermined mobile communication protocol and a terminal operable in accordance with an Internet protocol (IP), the predetermined mobile communication protocol configured to allow use of a plurality of radio links between the mobile station and the communication system, the communication system comprising: an interworking apparatus configured to receive IP frames and a plurality of radio frames defined by the predetermined mobile communication protocol, the interworking apparatus comprising: framing means for framing each IP frame into a point-to-point protocol (PPP) frame; transmitting frame memory means assigned to the plurality of radio links for storing the PPP frames, wherein the transmitting frame memory means comprises a plurality of frame memories which are equal in number to a number of radio links assigned to the interworking apparatus; reception frame control means for assigning the PPP frames generated by the framing means to the plurality of frame memories; and transmitting means for transmitting the stored PPP frames through the plurality of radio links in the form of the radio frames.