Patent ID: 8649309
Filing Date: 2014-02-11
Classification: H04L,H04W

Abstract:
1. A method for providing a broadcasting service in a cellular network, the method comprising: transmitting a session start request message from a broadcast server to an Access Service Network-GateWay (ASN_GW) before delivery of Multicast and Broadcast Service (MBS) data, to request a multicast connection setup; establishing, by the ASN_GW, a multicast connection between the broadcast server and the ASN_GW based on the information of the session start request message; transmitting a path registration request message from the ASN_GW to at least one base station associated with a broadcast zone, to request MBS data path establishment and air resource reservation; establishing, by the base station, a multicast connection between the ASN_GW and the base station based on the information of the path registration request message; transmitting a path registration response message from the base station to the ASN_GW in response to the path registration request message, after establishment of the multicast connection between the ASN_GW and the base station; transmitting a session start response message from the ASN_GW to the broadcast server in response to the session start request message; one of multicasting and unicasting a broadcast packet from the broadcast server to the ASN_GW by use of an R3 broadcast channel Internet Protocol (IP) address at the start of MBS data delivery; packetizing, by the ASN_GW, a received broadcast packet in accordance with a burst size of a wireless section to generate a Media Access Control (MAC) Service Data Unit (SDU); time-stamping, by the ASN_GW, a broadcast absolute time with respect to the MAC SDU; prefixing, by the ASN_GW, a GRE header to the MAC SDU to generate a tunneling packet; prefixing, by the ASN_GW, an R6 multicast IP header to the tunneling packet to generate an IP packet; and multicasting, by the ASN_GW, the IP packet to base stations associated with the broadcast zone, wherein the session start response message includes information about a success or failure of path establishment for the base station.