Quality-of-Service

V. Liberatore

Pervasive Computing

QoS

Application

(the control application, e.g., close-lever)

Middleware

(common to multiple applications, e.g., resource discovery)

Transport

(e.g., TCP, RTP/UDP)

Data Link

(low level communication,

e.g. Ethernet, Infinet, etc.)

Network

(convergence layer: IP)

•Applications and

middleware

•Network awareness

•Remediate network

vagaries

•Network layer

•Map to data link QoS

•QoS in multi-hop networks

•Data link

•Single hop QoS

•E.g., priorities