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V. Liberatore
Pervasive Computing
QoS in Multi-hop Networks
*Queuing
nPackets are forwarded from one network to another
nPackets are queued at routers (store-and-forward)
nProtect from cross-traffic cause congestion
*Per-Hop Behaviors (PHB)
nBehavior of individual router
*E.g., Forward before all other queued packets
nMaps into data link QoS
nDepends on Class-of-Service
*Class of service
nAssigned by source or shapers
nImply PHB