Adaptive Error Control for Multimedia Data Transfers
Bert J. Dempsey, W. Timothy Strayer, Alfred C. Weaver · 2005
Abstract: In this paper we suggest the need for a new class of transport service to handle the requirements of digital continuous-media data transfers and other applications that may desire to trade of f data completeness for latenc y considerations. Specifically, we define a P artially Error-Controlled Connection service under which the user submits application- and endsystem-specific parameters to coordinate the protocol’s use of data retransmissions for error reco very with latenc y concerns. We implement a prototype of this service as a lightweight implementation enhancement to an existing protocol, the Xpress T ransfer Protocol. Measurements of our implementation suggest that the PECC approach can pro vide for a service that limits the frequency and duration of data loss, which a non-error-controlled service can not do, while avoiding the delay-insensitivity of traditional error control in a fully reliable connection. 1.