A method for improving transfer quality of CBR streams over wireless LANs

• Autorzy: Śliwiński J. , Burakowski W. , Bęben A.
• Języki publikacji: EN

Abstrakty

EN

The paper proposes a new mechanism for wireless LAN networks IEEE 802.11 fully dedicated to handling CBR (Constant Bit Rate) streams that require constant packet transfer delay. The mechanism is targeted on improving packet transfer characteristics. This mechanism, named Self-synchronization Packet Transfer (SPT), is implemented in each station on the top of the MAC layer and is focused on avoiding the transmission backoffs and packet contention caused by the MAC protocol that are responsible for producing large packet transfer delay variations. The objective of the SPT is to set the moment for packet transmission when the medium is idle. This is achieved by delaying the packet. The value of this delay is set independently in each station on the basis of observation of the previous successful transfer packet belonging to the same stream. Finally, for consecutive packets from this stream we observe no packet contention when we delayed each packet by the same (constant) value. In the paper, we evaluate the effectiveness of the proposed mechanism for improving packet transfer characteristics of CBR streams in wireless LAN and compare them with the results for standard solution.

Słowa kluczowe

EN

wireless LAN; QoS mechanisms; CBR streams

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Systems Science
• Rocznik: 2006
• Tom: Vol. 32, no 3
• Strony: 37--43
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Śliwiński J.

autor

Burakowski W.

autor

Bęben A.

• Warsaw University of Technology, Institute of Telecommunications, ul. Nowowiejska 15/17, 00-665 Warsaw, Poland,

Bibliografia

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