Computer Science – Networking and Internet Architecture
Scientific paper
2009-08-05
Computer Science
Networking and Internet Architecture
Scientific paper
We develop a general approach for designing scheduling policies for real-time traffic over wireless channels. We extend prior work, which characterizes a real-time flow by its traffic pattern, delay bound, timely-throughput requirement, and channel reliability, to allow time-varying channels, allow clients to have different deadlines, and allow for the optional employment of rate adaptation. Thus, our model allow the treatment of more realistic fading channels as well as scenarios with mobile nodes, and the usage of more general transmission strategies. We derive a sufficient condition for a scheduling policy to be feasibility optimal, and thereby establish a class of feasibility optimal policies. We demonstrate the utility of the identified class by deriving a feasibility optimal policy for the scenario with rate adaptation, time-varying channels, and heterogeneous delay bounds. When rate adaptation is not available, we also derive a feasibility optimal policy for time-varying channels. For the scenario where rate adaptation is not available but clients have different delay bounds, we describe a heuristic. Simulation results are also presented which indicate the usefulness of the scheduling policies for more realistic and complex scenarios.
Hou I-Hong
Kumar Ravi P.
No associations
LandOfFree
Scheduling Heterogeneous Real-Time Traffic over Fading Wireless Channels does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Scheduling Heterogeneous Real-Time Traffic over Fading Wireless Channels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scheduling Heterogeneous Real-Time Traffic over Fading Wireless Channels will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-254385