TY - GEN
T1 - Dynamic sensitivity control to improve spatial reuse in dense wireless LANs
AU - Kulkarni, Parag
AU - Cao, Fengming
N1 - Publisher Copyright:
© 2016 ACM.
PY - 2016/11/13
Y1 - 2016/11/13
N2 - With the proliferation of wireless LANs, we are in an era of densification. Whilst densification could lead to increased coverage (neighbouring APs belonging to the same administrative domain), which is good news, it could also lead to increased interference (neighbouring APs not belonging to the same administrative domain). In particular, in the latter case, nodes (both APs and STAs) in neighbouring networks could carrier sense each other and resist from transmitting when in fact a parallel transmission could have been harmless. Thus, improving spatial reuse in such scenarios is crucial to improving performance in dense deployments otherwise the efficiency is likely to take a hit. This paper elaborates on dynamic sensitivity control (DSC), a way of adapting the carrier sensing threshold dynamically to address the aforementioned issue and presents results from a simulation based study aimed at evaluating the proposed method. Findings indicate that the gains achievable from deploying DSC vary significantly depending on the operating conditions and therefore, choosing a fixed conservative threshold at design time, as has been the case traditionally, may not be an appropriate decision. We also show that enabling DSC at the AP may bring benefits with the performance approaching that of the traditional method (of not adapting sensitivity) in the conservative case.
AB - With the proliferation of wireless LANs, we are in an era of densification. Whilst densification could lead to increased coverage (neighbouring APs belonging to the same administrative domain), which is good news, it could also lead to increased interference (neighbouring APs not belonging to the same administrative domain). In particular, in the latter case, nodes (both APs and STAs) in neighbouring networks could carrier sense each other and resist from transmitting when in fact a parallel transmission could have been harmless. Thus, improving spatial reuse in such scenarios is crucial to improving performance in dense deployments otherwise the efficiency is likely to take a hit. This paper elaborates on dynamic sensitivity control (DSC), a way of adapting the carrier sensing threshold dynamically to address the aforementioned issue and presents results from a simulation based study aimed at evaluating the proposed method. Findings indicate that the gains achievable from deploying DSC vary significantly depending on the operating conditions and therefore, choosing a fixed conservative threshold at design time, as has been the case traditionally, may not be an appropriate decision. We also show that enabling DSC at the AP may bring benefits with the performance approaching that of the traditional method (of not adapting sensitivity) in the conservative case.
KW - CCA adaptation
KW - Dense wireless LANs
KW - Dynamic sensitivity control (DSC)
KW - IEEE 802.11ax
UR - http://www.scopus.com/inward/record.url?scp=85006998582&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85006998582&partnerID=8YFLogxK
U2 - 10.1145/2988287.2989138
DO - 10.1145/2988287.2989138
M3 - Conference contribution
AN - SCOPUS:85006998582
T3 - MSWiM 2016 - Proceedings of the 19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems
SP - 323
EP - 329
BT - MSWiM 2016 - Proceedings of the 19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems
PB - Association for Computing Machinery, Inc
T2 - 19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2016
Y2 - 13 November 2016 through 17 November 2016
ER -