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Scheduling for Optimal Rate Allocation in Ad Hoc Networks With Heterogeneous Delay Constraints

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3 Author(s)
Jaramillo, J.J. ; Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA ; Srikant, R. ; Lei Ying

This paper studies the problem of scheduling in single-hop wireless networks with real-time traffic, where every packet arrival has an associated deadline and a minimum fraction of packets must be transmitted before the end of the deadline. Using optimization and stochastic network theory we study the problem of scheduling to meet quality of service (QoS) requirements under heterogeneous delay constraints and time-varying channel conditions. Our analysis results in an optimal scheduling algorithm which fairly allocates data rates to all flows while meeting long-term delay demands. We also prove that under a simplified scenario our solution translates into a greedy strategy that makes optimal decisions with low complexity.

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Selected Areas in Communications, IEEE Journal on  (Volume:29 ,  Issue: 5 )