chapter  5
22 Pages

Service Differentiation on Streaming Servers

In this chapter, we investigate the problem of service differentiation provisioning on media streaming servers, with a focus on outbound network I/O bandwidth allocation. We formulate the bandwidth allocation problem as an optimization of a harmonic utility function of the stream quality factors and derive the optimal streaming bit rates for requests of different classes under various server load conditions. We prove that the optimal allocation not only maximizes the system utility function, but also guarantees proportional fair sharing between classes with different prespecified differentiation weights.