3/1/001 QOS Support for Wireless (a personal opinion) Lixia Zhang UCLA Computer Science Dept IAB Wireless Workshop March 1, 2000.

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Presentation transcript:

3/1/001 QOS Support for Wireless (a personal opinion) Lixia Zhang UCLA Computer Science Dept IAB Wireless Workshop March 1, 2000

3/1/002 Existing effort in wireless QOS area as much as I know signaling protocols –predict where mobiles moving to, set up reservation in time –multiple wireless hops channel scheduling algorithms –realtime support –fairness assurance

3/1/003 The real challenge not wireless –just a poor quality link but mobility: the end of your data flow moving around Per flow RSVP for wireless scales much worse than per flow RSVP on wireland –highly dynamic changes

3/1/004 Being Pragmatic (or being real) Diffserv approach to wireless QOS allocate for QOS traffic class –one more (in addition to datagram) would do control the amount of QOS traffic injected into the system someway to adjust the allocated amount gradually over time

3/1/005 A two-tier resource control framework Wireless first hop bilateral QOS agreement between neighboring domains (adjusted over time) each domain responsible for its internal resource management & usage u Payload type independent u Packets carry right DS bits u authorizing the QOS uage: not a new issue Wireless first hop