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Traffic scheduling for multimedia transmission over IEEE 802.11e wireless LAN

Traffic scheduling for multimedia transmission over IEEE 802.11e wireless LAN

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  • Author(s): W.-K. Kuo 1
    • View affiliations
    • Affiliations: 1: Department of Electrical Engineering, National Cheng Kung University, Institute of Computer and Communication Engineering, Tianan, Taiwan, Republic of China
  • Source: Volume 2, Issue 1, January 2008, p. 92 – 97
    DOI:  10.1049/iet-com:20060575 , Print ISSN 1751-8628, Online ISSN 1751-8636
© The Institution of Engineering and Technology
Published

As the demand for broadband multimedia wireless is increasing, improving the quality of service (QoS) of the widely deployed IEEE 802.11 wireless LAN has become crucial. In order to attain the QoS required by a wide range of applications, the IEEE 802.11 working group has defined a new standard – the IEEE 802.11e. However, very limited work has been performed to address the QoS transmission problem of real-time video over IEEE 802.11e. A novel measurement-based dynamic transmission opportunity (MBDTXOP) scheme is proposed, which adaptively allocates resources to a variable bit rate (VBR) video on the basis of the estimation of future traffic demand to support efficient QoS transmission of VBR video. The novelty of the proposed scheme, when compared with existing methods, lies in estimating the required network resources by exploiting the characteristics of digital video; this capability enables the MBDTXOP scheme to substantially increase network utilisation while preserving the required QoS for the transmission of VBR video. Simulations comparing the proposed scheme with other mechanisms clearly demonstrate the outstanding performance of the former.

Inspec keywords: wireless LAN; telecommunication traffic; quality of service; resource allocation; multimedia communication

Other keywords: IEEE 802.11e wireless LAN; telecommunication traffic; quality of service; resource allocation; multimedia transmission; variable bit rate video; measurement-based dynamic transmission opportunity scheme

Subjects: Local area networks; Radio links and equipment; Multimedia communications; Computer communications; Multimedia

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