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Article: An efficient scheduling scheme for hybrid TDMA and SDMA systems with smart antennas in WLANs

TitleAn efficient scheduling scheme for hybrid TDMA and SDMA systems with smart antennas in WLANs
Authors
KeywordsSpatial Division Multiple Access (SDMA)
WLANs
Transmission scheduling
Algorithmic approach
Resource allocation
Smart antennas
Time Division Multiple Access (TDMA)
Issue Date2013
Citation
Wireless Networks, 2013, v. 19, n. 2, p. 259-271 How to Cite?
AbstractSmart antennas are an emerging technology that exploits spatial diversity and allows an access point (AP) to simultaneously transmit downlink packets to multiple stations (STAs). In this paper, we propose a new AP scheduling scheme for hybrid TDMA (Time Division Multiple Access) and SDMA (Spatial Division Multiple Access). Our scheduling scheme aims at maximizing the system throughput while maintaining the fairness among STAs and guaranteeing Quality of Service of different traffic classes. The original contributions of our scheduling scheme include: (1) We propose a transmission framework that allows TDMA STAs to transmit in the TDMA fashion, and non-TDMA STAs to compete channel access in the CSMA/CA fashion. (2) We analyze the performance of CSMA/CA STAs and determine the optimal contention window size for each STA to minimize the collision rate subject to the contention period constraint. (3) We propose an analysis to determine the minimal length of time allocated to non-TDMA STAs during a transmission period such that each STA will have a success transmission probability above a specified threshold in each period. (4) We propose a scheduling algorithm that schedules simultaneous packet transmission to multiple STAs such that maximal number of packets can be transmitted to multiple STAs without causing unacceptable interference. © 2012 Springer Science+Business Media, LLC.
Persistent Identifierhttp://hdl.handle.net/10722/230934
ISSN
2015 Impact Factor: 1.006
2015 SCImago Journal Rankings: 0.463

 

DC FieldValueLanguage
dc.contributor.authorWong, Gary K W-
dc.contributor.authorJia, Xiaohua-
dc.date.accessioned2016-09-01T06:07:11Z-
dc.date.available2016-09-01T06:07:11Z-
dc.date.issued2013-
dc.identifier.citationWireless Networks, 2013, v. 19, n. 2, p. 259-271-
dc.identifier.issn1022-0038-
dc.identifier.urihttp://hdl.handle.net/10722/230934-
dc.description.abstractSmart antennas are an emerging technology that exploits spatial diversity and allows an access point (AP) to simultaneously transmit downlink packets to multiple stations (STAs). In this paper, we propose a new AP scheduling scheme for hybrid TDMA (Time Division Multiple Access) and SDMA (Spatial Division Multiple Access). Our scheduling scheme aims at maximizing the system throughput while maintaining the fairness among STAs and guaranteeing Quality of Service of different traffic classes. The original contributions of our scheduling scheme include: (1) We propose a transmission framework that allows TDMA STAs to transmit in the TDMA fashion, and non-TDMA STAs to compete channel access in the CSMA/CA fashion. (2) We analyze the performance of CSMA/CA STAs and determine the optimal contention window size for each STA to minimize the collision rate subject to the contention period constraint. (3) We propose an analysis to determine the minimal length of time allocated to non-TDMA STAs during a transmission period such that each STA will have a success transmission probability above a specified threshold in each period. (4) We propose a scheduling algorithm that schedules simultaneous packet transmission to multiple STAs such that maximal number of packets can be transmitted to multiple STAs without causing unacceptable interference. © 2012 Springer Science+Business Media, LLC.-
dc.languageeng-
dc.relation.ispartofWireless Networks-
dc.subjectSpatial Division Multiple Access (SDMA)-
dc.subjectWLANs-
dc.subjectTransmission scheduling-
dc.subjectAlgorithmic approach-
dc.subjectResource allocation-
dc.subjectSmart antennas-
dc.subjectTime Division Multiple Access (TDMA)-
dc.titleAn efficient scheduling scheme for hybrid TDMA and SDMA systems with smart antennas in WLANs-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s11276-012-0464-x-
dc.identifier.scopuseid_2-s2.0-84878604814-
dc.identifier.volume19-
dc.identifier.issue2-
dc.identifier.spage259-
dc.identifier.epage271-

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