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Mitigating Control Channel Saturation in the Dynamic Channel Assignment Protocol
Tsinghua University.
Tsinghua University.
Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för datavetenskap. (DISCO)
Karlstads universitet, Fakulteten för ekonomi, kommunikation och IT, Avdelningen för datavetenskap. (Datavetenskap)ORCID-id: 0000-0002-9446-8143
2011 (Engelska)Ingår i: JCIT: Journal of Convergence Information Technology, ISSN 2233-9299, Vol. 6, nr 6, s. 271-281Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

 Multi-channel MAC protocols that rely on a dedicated control channel (CC) for data channel reservation face the problem of control channel saturation. When the control channel becomes the bottleneck, data channels are not fully utilized and the spectrum allocated for the network is not used efficiently. For a popular dedicated control channel based multi-channel MAC protocol, the dynamic channel assignment protocol (DCA), we propose and compare two methods for mitigating control channel saturation. The first method is based on the ability of modern wireless cards to use different channel bandwidths. Increasing the bandwidth of the CC allows higher transmission rates and thereby relieves the saturation on the CC. The second method involves TXOP (Transmission Opportunity)-like burst-transmissions, where several date packets are transmitted using one reservation operation on the control channel. Network simulations and analysis show that, in an 802.11 based network, the bandwidth adaptation method yields a throughput improvement of around 30%. The TXOP mechanism performs much better and increases the throughput by a factor of 2 to 10, depending on the length of the data packets.

Ort, förlag, år, upplaga, sidor
USA: AICIT , 2011. Vol. 6, nr 6, s. 271-281
Nyckelord [en]
Bandwidth adaptation, Channel bandwidth, Control channels, Data channels, Data packet, Dynamic channel assignment, IEEE 802.11 DCF, Multi-channel MAC protocols, Network simulation, Throughput improvement, Transmission opportunities, Transmission rates, Wireless cards
Nationell ämneskategori
Datorsystem
Forskningsämne
Datavetenskap
Identifikatorer
URN: urn:nbn:se:kau:diva-11658DOI: 10.4156/jcit.vol6.issue6.28OAI: oai:DiVA.org:kau-11658DiVA, id: diva2:502372
Tillgänglig från: 2012-02-14 Skapad: 2012-02-14 Senast uppdaterad: 2017-12-06Bibliografiskt granskad

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