公开(公告)号：KR1020080081632A

公开(公告)日：2008-09-10

申请号：KR1020070021934

申请日：2007-03-06

Applicant: 주식회사 팬택자산관리 ,  재단법인서울대학교산학협력재단

Inventor： 김건욱 ,  정소영 ,  박경 ,  엄현상 ,  김진혁 ,  민병호

IPC: H04L12/58 ,  H04L12/18 ,  H04L29/02

CPC classification number: H04L67/06 ,  H04L51/36

Abstract: A point-to-multipoint file transmission method in a CPM(Converged IP Messaging) system is provided to improve the performance and reliability of file transmission in transmitting files in a CPM system by transmitting a list of file receivers to a server, entrusting the server with file transmission management, and transmitting a file under the management of the server. In order to transmit a file to a plurality of receiving terminals, a sending terminal transmits a receiver list to a server in charge of the sending terminal(S210). Receiving the receiver list, the serve rin charge of the sending terminal verifies whether the sending terminal is capable of file transmission(S220). If so, the server in charge of the sending terminal asks each server in charge of each of the receiving terminals whether to be willing to receive the file(S230). Each server in charge of each receiving terminal verifies whether each receiving terminal is capable of file reception(S240). In case a server in charge of a receiving terminal judges that the receiving terminal is capable of file reception, the server asks the receiving terminal whether to be willing to receive the file(S250). The servers in charge of the receiving terminals respectively receive reception consent or denial responses from the receiving terminals and transmit the received responses to the server in charge of the sending terminal(S260). Based on the reception consent/denial responses, the server in charge of the sending terminal creates a new receiver list(S270).

Abstract translation: 提供CPM（Converged IP Messaging）系统中的点对多点文件传输方法，通过向服务器发送文件接收器列表来提升在CPM系统中传输文件中文件传输的性能和可靠性，委托服务器 通过文件传输管理，并在服务器的管理下传输文件。 为了将文件发送到多个接收终端，发送终端向负责发送终端的服务器发送接收者列表（S210）。 接收到接收者列表后，发送终端的发送终端验证发送终端是否能够进行文件传输（S220）。 如果是这样，负责发送终端的服务器请求负责每个接收终端的每个服务器是否愿意接收文件（S230）。 每个接收终端负责的每个服务器验证每个接收终端是否能够进行文件接收（S240）。 在负责接收终端的服务器判断接收终端能够进行文件接收的情况下，服务器询问接收终端是否愿意接收文件（S250）。 负责接收终端的服务器分别接收来自接收终端的接收同意或拒绝响应，并将收到的响应发送给负责发送终端的服务器（S260）。 基于接收同意/拒绝响应，负责发送终端的服务器创建新的接收者列表（S270）。