"-0x2l4x78j]b8%0%k!<%wdl?. ("-co) %w%m%h%3%k N)@n 7i9t Blbt @? El5~ee5!bg3xm}9)3xit7p1d9)3x2j "-causally Ordering Group Communication ("-co) Protocol

The distributed applications require group communication of multimedia data among multiple processes. A message including multimedia data at the application level is decomposed into smaller packets at the communication system level. In this paper, we discuss the ordered, atomic, and non-loss delivery of messages at the application level not at the system level. In some multimedia applications, the application processes do not mind if some packets are lost. The application process species the minimum receipt ratio " (1) showing at least how many percentages of whole data in each message the destination process has to receive. The communication system delivers the packets to the destinations in the group so as to satisfy the receipt constraint ". The protocol is based on the fully distributed control scheme, and uses high-speed networks where the process may lose packets due to the buer overrun and congestion.