科研成果详情

Multimedia transmission over wireless networks is a hot research field these years, but little work focuses on discussion of efficient transmission between wireless terminals. Limited bandwidth of wireless networks and limited capabilities of wireless terminals are two major problems for the efficient transmission of multimedia flows. In this paper, we propose a system, End-to-End Wireless Multimedia Transmission (EEWMT) system, that supports end-to-end wireless transmission for multimedia flows and provides services to resolve the above two problems. EEWMT system is mainly made up of three parts, anyDevice, Center Server and Agent Server: anyDevice is a protocol stack working on terminals; Center Server provides indexing and database services and is responsible for session management; Agent Server provides data buffering and multimedia transcoding services. Implementation of our system shows that it enhances both the communication efficiency and the content quality. © 2004 IEEE.