Distributed Utility Model for Distributed Multimedia Server Systems

摘要

Allocation and reservation of resources, such as CPU cycles and I/O bandwidth of multimedia servers and link bandwidth in the network, is essential to ensure Quality of Service (QoS) of multimedia services delivered over the Internet. In this paper we propose a Distributed Multimedia Server System (DMSS) configured out of a collection of networked multimedia servers where multimedia data are partitioned and replicated among the servers. We introduce Utility Model -^sDistributed (UM-D), the distributed version of the Utility Model, for admission control and QoS adaptation of multimedia sessions to maximize revenue from multimedia services for the DMSS. We also present several possible arrangements or architectures of Utility Model Engines working as admission controller(s) to solve the UM-D in a DMSS cooperatively.