Graduate School and Research Center in Digital Sciences

Selective fair scheduling over fading channels

Destounis, Apostolos; Paschos, Georgios S.; Gesbert, David

WIOPT 2018, 16th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, 7-11 May 2018, Shanghai, China

Imposing fairness in resource allocation incurs a loss of system throughput, known as the Price of Fairness (P oF). In wireless scheduling, P oF increases when serving users with very poor channel quality because the scheduler wastes resources trying to be fair. This paper proposes a novel resource allocation framework to rigorously address this issue. We introduce selective fairness: being fair only to selected users, and improving P oF by momentarily blocking the rest. We study the associated admission control problem of finding the user selection that minimizes P oF subject to selective fairness, and show that this combinatorial problem can be solved efficiently if the feasibility set satisfies a condition; in our model it suffices that the wireless channels are stochastically dominated. Exploiting selective fairness, we design a stochastic framework where we minimize P oF subject to an SLA, which ensures that an ergodic subscriber is served frequently enough. In this context, we propose an online policy that combines the drift-plus-penalty technique with GradientBased Scheduling experts, and we prove it achieves the optimal P oF. Simulations show that our intelligent blocking outperforms by 40% in throughput previous approaches which satisfy the SLA by blocking low-SNR users. 

Document Doi Arxiv Bibtex

Title:Selective fair scheduling over fading channels
Department:Communication systems
Eurecom ref:5423
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Bibtex: @inproceedings{EURECOM+5423, doi = {}, year = {2018}, title = {{S}elective fair scheduling over fading channels}, author = {{D}estounis, {A}postolos and {P}aschos, {G}eorgios {S}. and {G}esbert, {D}avid}, booktitle = {{WIOPT} 2018, 16th {I}nternational {S}ymposium on {M}odeling and {O}ptimization in {M}obile, {A}d {H}oc, and {W}ireless {N}etworks, 7-11 {M}ay 2018, {S}hanghai, {C}hina}, address = {{S}hanghai, {CHINA}}, month = {05}, url = {} }
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