Heavy-traffic-optimal scheduling with regular service guarantees in wireless networks

Bin Li, Ruogu Li, Atilla Eryilmaz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Scopus citations

Abstract

We consider the design of throughput-optimal scheduling policies in multi-hop wireless networks that also possess good mean delay performance and provide regular service for all links - critical metrics for real-time applications. To that end, we study a parametric class of maximum-weight type scheduling policies with parameter α ≥ 0; called Regular Service Guarantee (RSG) Algorithm, where each link weight consists of its own queue-length and a counter that tracks the time since the last service. This policy has been shown to be throughput-optimal and to provide more regular service as the parameter α increases, however at the cost of increasing mean delay. This motivates us to investigate whether satisfactory service regularity and low mean-delay can be simultaneously achieved by the RSG Algorithm by carefully selecting its parameter α. To that end, we perform a novel Lyapunov-drift based analysis of the steady-state behavior of the stochastic network. Our analysis reveals that the RSG Algorithm can minimize the total mean queue-length to establish mean delay optimality under heavily-loaded conditions as long as α scales no faster than the order of 1/5√ε, where ε measures the closeness of the network load to the boundary of the capacity region. To the best of our knowledge, this is the first work that provides regular service to all links while also achieving heavy-trafic optimality in mean queue-lengths.

Original languageEnglish (US)
Title of host publicationMobiHoc 2013 - Proceedings of the 14th ACM International Symposium on Mobile Ad Hoc Networking and Computing
Pages79-87
Number of pages9
DOIs
StatePublished - 2013
Event14th ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2013 - Bangalore, India
Duration: Jul 29 2013Aug 1 2013

Publication series

NameProceedings of the International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc)

Conference

Conference14th ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2013
Country/TerritoryIndia
CityBangalore
Period7/29/138/1/13

All Science Journal Classification (ASJC) codes

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications

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