Improved Abstraction for Clear Channel Assessment in ns-3 802.11 WLAN Model
Improved Abstraction for Clear Channel Assessment in ns-3 802.11 WLAN Model
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改进了 ns-3 802.11 WLAN 模型中畅通信道评估的抽象
DOI:
10.1145/3321349.3321353
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发表时间:
2019
期刊:
影响因子:
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通讯作者:
Deronne, Sébastien
中科院分区:
文献类型:
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作者:
Lanante, Leonardo;Roy, Sumit;Carpenter, Scott E.;Deronne, Sébastien
An important challenge for ns-3 is to enable efficient performance evaluation of increasingly dense and heterogeneous networks, cognizant of cross-layer (specifically, Layers 1 & 2) interactions. In this work (a continuation of U. Washington efforts), we present improved physical layer abstractions for a key component underlying all 802.11 WLAN MAC performance evaluation - the Clear Channel Assessment (CCA) procedure central to CSMA/CA - for implementation in the ns-3 simulator. We model the preamble correlation process as typically implemented in 802.11 radio and represent the resulting probability of detection as a look-up table with a parameterized correlation threshold for different receive sensitivity strategies. Further, we also added a new carrier sense threshold adjustment mechanism to allow nodes to enable bypassing the default (and to date, fixed) -82dBm threshold. Such a capability aligns ns-3 for performance evaluation of dense networks equipped with new spatial reuse mechanisms. We demonstrate this via simulation of spatial reuse gains from dynamic sensitivity control (DSC) that are verified against IEEE 802.11ax standards group contributions. Using simulation results from a fixed rate multi-BSS network, we then identify valuable design guidelines to maximize the aggregate throughput with DSC.
DOI:
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发表时间:
2016
期刊:
Workshop on ns-3
影响因子:
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作者:
Hossein;Farah Nadeem;S. Roy
通讯作者:
S. Roy
DOI:
10.1145/190314.190334
发表时间:
1994-10
期刊:
Proceedings of the conference on Communications architectures, protocols and applications
影响因子:
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作者:
V. Bharghavan;A. Demers;S. Shenker;Lixia Zhang
通讯作者:
V. Bharghavan;A. Demers;S. Shenker;Lixia Zhang
DOI:
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发表时间:
2017
期刊:
Workshop on ns-3
影响因子:
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作者:
Rohan Patidar;S. Roy;T. Henderson;Amrutha Chandramohan
通讯作者:
Amrutha Chandramohan