Paper Info
Title
Throughput-Fairness Tradeoff Evaluation For Next-Generation Wlans With Adaptive Clear Channel Assessment
Abstract
In order to meet the exponential increase in wireless demand, new technologies are being considered for next-generation Wi-Fi systems (e.g., IEEE 802.11ax). Among these technologies is the adaptation of clear channel assessment (CCA) thresholds for high-efficiency (HE) stations (STAs) according to the beacon's received signal strength indicator (RSSI). The motivation behind this approach is to enhance the network throughput by improving the spatial reuse (i.e., allowing simultaneous transmissions from nearby STAs). There exists an inherent tradeoff between increasing the network throughput, via adapting the CCA thresholds for HE STAs, and maintaining fairness between legacy and HE STAs. In this paper, we provide a theoretical framework to evaluate the aforementioned tradeoff. We also propose a centralized fairness mechanism (CFM), in which STAs switch between an adaptive phase (CCA adaptation is allowed) and a fixed phase (legacy and HE STAs use the same CCA threshold). We formulate an optimization problem with the objective of determining the optimal switching strategy that maximizes the network throughput while maintaining a lower bound on per-STA throughput. Finally, we validate the proposed mechanism using simulations.
Year
DOI
Venue
2016
10.1109/ICC.2016.7511456
2016 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC)
Keywords
Field
DocType
IEEE 802.11ax, Clear channel assessment threshold adaptation, Network-throughput/fairness tradeoff
Next-generation network,Wireless,Upper and lower bounds,Computer science,Reuse,IEEE 802.11ax,Computer network,Real-time computing,Maximum throughput scheduling,Throughput,Optimization problem
Conference
ISSN
Citations 
PageRank 
1550-3607
0
0.34
References 
Authors
5
5
Name
Order
Citations
PageRank
Wessam Afifi1415.10
Enrico Rantala2111.10
Esa Tuomaala314213.17
Sayantan Choudhury428125.40
Marwan Krunz53541242.09