公开(公告)号：US5812552A

公开(公告)日：1998-09-22

申请号：US618483

申请日：1996-03-19

申请人： Vivek Arora ,  Larry H. Chang ,  Seyhan Civanlar ,  Vikram R. Saksena ,  Agnes C. Tow

发明人： Vivek Arora ,  Larry H. Chang ,  Seyhan Civanlar ,  Vikram R. Saksena ,  Agnes C. Tow

IPC分类号： H04L12/18 ,  H04L12/46 ,  H04L12/56 ,  H04Q11/04 ,  H04L12/28

CPC分类号： H04Q11/0478 ,  H04L12/4608 ,  H04L2012/5615 ,  H04L2012/5619 ,  H04L2012/5641 ,  H04L2012/5642

摘要： A temporary multimedia ELAN is formed on top of one or more existing ELANs between those end-stations (121-1, 121-2, 111-1) participating in a multimedia session, such as a video conference, at the time of initiating the session. At the end of the session the temporary ELAN is torn down. When the temporary ELAN is created an available LAN Emulation Server (LES) (241) and an available Broadcast and Unknown Server (BUS) (243) are allocated to serve those end-stations participating in the multimedia session. The BUS also serves as a multicast server to multicast a multimedia stream from one end-station to each other end-station on the temporary ELAN. The initiator of a session accesses a Multimedia Session Manager (401), which oversees and manages the session and coordinates the necessary resources. An ELAN Configuration (402) serves to dynamically assign IP addresses to end-stations to ensure that each end-station on the temporary ELAN is on a single subnet, to receive the configuration attributes of each end-station that is to be connected on the temporary ELAN, to find an available LES and BUS to serve the temporary multimedia ELAN, and to coordinate establishment of the temporary ELAN between the end-stations. Once the temporary ELAN has been formed, a Conference Configurator (403) starts executing a multimedia application already existing on each end-station or sends the executables of the selected multimedia application in real time to each end-station. During the session the Multimedia Session Manager is used to add a new end-station, drop an end-station, and terminate the session.

摘要翻译： 临时多媒体ELAN形成在参与诸如视频会议的多媒体会话的那些终端站（121-1,121-2,111-1）之间的一个或多个现有ELAN的顶部，在启动时 会话 在会议结束时，临时ELAN被拆毁。 当创建临时ELAN时，分配可用的LAN仿真服务器（LES）（241）和可用的广播和未知服务器（BUS）（243）来为参与多媒体会话的那些终端服务。 BUS还用作组播服务器，以将临时ELAN上的一个终端站的多媒体流多播到另一个终端站。 会话的发起者访问多媒体会话管理器（401），监视和管理会话并协调必要的资源。 ELAN配置（402）用于向终端站动态分配IP地址，以确保临时ELAN上的每个终端站在单个子网上，以接收将要连接的每个终端站的配置属性 临时ELAN，找到可用的LES和BUS服务于临时多媒体ELAN，并协调终端之间临时ELAN的建立。 一旦临时ELAN已经形成，会议配置器（403）开始执行已经存在于每个终端站上的多媒体应用，或者将所选择的多媒体应用的可执行程序实时地发送到每个终端站。 在会话期间，多媒体会话管理器用于添加新的终端站，丢弃终端站，并终止会话。