Opportunistic transmission scheduling with resource-sharing constraints in wireless networks

Author

Liu, Xin ; Chong, Edwin K P ; Shroff, Ness B.

Author_Institution

Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA

Volume

19

Issue

10

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

2053

Lastpage

2064

Abstract

We present an “opportunistic” transmission scheduling policy that exploits time-varying channel conditions and maximizes the system performance stochastically under a certain resource allocation constraint. We establish the optimality of the scheduling scheme and also that every user experiences a performance improvement over any nonopportunistic scheduling policy when users have independent performance values. We demonstrate via simulation results that the scheme is robust to estimation errors and also works well for nonstationary scenarios, resulting in performance improvements of 20%-150% compared with a scheduling scheme that does not take into account channel conditions. Last, we discuss an extension of our opportunistic scheduling scheme to improve “short-term” performance

Keywords

cellular radio; parameter estimation; radio networks; time-varying channels; cellular radio; estimation errors; nonopportunistic scheduling; nonstationary scenarios; opportunistic transmission scheduling; parameter estimation algorithm; resource allocation constraint; resource-sharing constraints; short-term performance; simulation results; system performance; time-varying channel conditions; wireless networks; Base stations; Intelligent networks; Quality of service; Resource management; Robustness; Shadow mapping; System performance; Throughput; Time-varying channels; Wireless networks;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.957318

Filename

957318