Patent ID: 7190680

Claim:
An apparatus of realizing a link access control protocol for IP multicasting/broadcasting (M/B) transmission in a mobile communication network, the apparatus comprising: a packet data serving node (PDSN) for receiving an IP M/B packet from an IP M/B packet server or an Internet host and transmitting the IP M/B packet after converting the IP M/B packet into a transmission format; a base station system including a base station controller/packet controller function (BSC/PCF) and a base transmission station (BTS), the BSC/PCF receiving the IP M/B packet from the PDSN, converting the IP M/B packet into a cellular M/B request message and transmitting the cellular M/B request message into the BTS, and the BTS receiving the IP M/B packet from the BSC, segmenting the IP M/B packet into a radio frame size and transmitting radio frames of the IP M/B packet; a mobile terminal for receiving and assembling the segmented radio frames of the IP M/B packet, transmitted from the BTS by radio, to form the IP M/B packet; and a M/B link access control means based upon a re-transmission request message for frame transmission confirmation on the radio link between the mobile terminal and the BTS/BSC.