Resource Management for OFDMA based Next Generation 802.11 WLANs
(2016) 9th IFIP Wireless and Mobile Networking Conference - WMNC p.57-64- Abstract
Recently, IEEE 802.11ax Task Group has adapted OFDMA as a new technique for enabling multi-user transmission. It has been also decided that the scheduling duration should be same for all the users in a multi-user OFDMA so that the transmission of the users should end at the same time. In order to realize that condition, the users with insufficient data should transmit null data (i.e. padding) to fill the duration. While this scheme offers strong features such as resilience to Overlapping Basic Service Set (OBSS) interference and ease of synchronization, it also poses major side issues of degraded throughput performance and waste of devices' energy. In this work, for OFDMA based 802.11 WLANs we first propose practical algorithm in which... (More)
Recently, IEEE 802.11ax Task Group has adapted OFDMA as a new technique for enabling multi-user transmission. It has been also decided that the scheduling duration should be same for all the users in a multi-user OFDMA so that the transmission of the users should end at the same time. In order to realize that condition, the users with insufficient data should transmit null data (i.e. padding) to fill the duration. While this scheme offers strong features such as resilience to Overlapping Basic Service Set (OBSS) interference and ease of synchronization, it also poses major side issues of degraded throughput performance and waste of devices' energy. In this work, for OFDMA based 802.11 WLANs we first propose practical algorithm in which the scheduling duration is fixed and does not change from time to time. In the second algorithm the scheduling duration is dynamically determined in a resource allocation framework by taking into account the padding overhead, airtime fairness and energy consumption of the users. We analytically investigate our resource allocation problems through Lyapunov optimization techniques and show that our algorithms are arbitrarily close to the optimal performance at the price of reduced convergence rate. We also calculate the overhead of our algorithms in a realistic setup and propose solutions for the implementation issues.
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- author
- Karaca, Mehmet LU ; Bastani, Saeed LU ; Priyanto, Basuki Endah ; Safavi, Mohammadhassan LU and Landfeldt, Björn LU
- organization
- publishing date
- 2016-08-15
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- IFIP Wireless and Mobile Networking Conference (WMNC)
- article number
- 7543930
- pages
- 8 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 9th IFIP Wireless and Mobile Networking Conference - WMNC
- conference location
- Colmar, France
- conference dates
- 2016-07-11 - 2016-07-13
- external identifiers
-
- scopus:84986005240
- scopus:84986005240
- ISBN
- 9781467387460
- DOI
- 10.1109/WMNC.2016.7543930
- project
- ELLIIT LU P01: WP2 Networking solutions
- language
- English
- LU publication?
- yes
- id
- 6e93af55-dfdf-423e-abcc-b561e7aeeedd
- date added to LUP
- 2016-05-09 10:38:58
- date last changed
- 2022-04-08 20:55:59
@inproceedings{6e93af55-dfdf-423e-abcc-b561e7aeeedd, abstract = {{<p>Recently, IEEE 802.11ax Task Group has adapted OFDMA as a new technique for enabling multi-user transmission. It has been also decided that the scheduling duration should be same for all the users in a multi-user OFDMA so that the transmission of the users should end at the same time. In order to realize that condition, the users with insufficient data should transmit null data (i.e. padding) to fill the duration. While this scheme offers strong features such as resilience to Overlapping Basic Service Set (OBSS) interference and ease of synchronization, it also poses major side issues of degraded throughput performance and waste of devices' energy. In this work, for OFDMA based 802.11 WLANs we first propose practical algorithm in which the scheduling duration is fixed and does not change from time to time. In the second algorithm the scheduling duration is dynamically determined in a resource allocation framework by taking into account the padding overhead, airtime fairness and energy consumption of the users. We analytically investigate our resource allocation problems through Lyapunov optimization techniques and show that our algorithms are arbitrarily close to the optimal performance at the price of reduced convergence rate. We also calculate the overhead of our algorithms in a realistic setup and propose solutions for the implementation issues.</p>}}, author = {{Karaca, Mehmet and Bastani, Saeed and Priyanto, Basuki Endah and Safavi, Mohammadhassan and Landfeldt, Björn}}, booktitle = {{IFIP Wireless and Mobile Networking Conference (WMNC)}}, isbn = {{9781467387460}}, language = {{eng}}, month = {{08}}, pages = {{57--64}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{Resource Management for OFDMA based Next Generation 802.11 WLANs}}, url = {{http://dx.doi.org/10.1109/WMNC.2016.7543930}}, doi = {{10.1109/WMNC.2016.7543930}}, year = {{2016}}, }