Alparslan ÇİL, Mehmet AKAR, Emin ANARIM

81121

Adaptive optimization of EDCA parameters for improved QoS in multi-media applications

IEEE 802.11e Enhanced Distributed Channel Access (EDCA) has been incorporated into the standard as an effective medium access mechanism in order to provide the desired QoS for multimedia applications such as VoIP and IPTV. This paper presents an adaptive optimization algorithm in EDCA which strives to provide improved QoS from both delay and throughput perspectives. As a first step towards this goal, a Markov model of the EDCA mechanism has been introduced, which is subsequently used to compute the estimates of throughput and delay. Based on the analytical model that is validated via real-time simulations in OPNET, a new algorithm is proposed that maximizes throughput while decreasing delay and minimizing collision probability for a higher access category.

Anahtar Kelimeler:

Distributed channel function, enhanced distributed channel access, IEEE 802.11e, wireless video

Adaptive optimization of EDCA parameters for improved QoS in multi-media applications

IEEE 802.11e Enhanced Distributed Channel Access (EDCA) has been incorporated into the standard as an effective medium access mechanism in order to provide the desired QoS for multimedia applications such as VoIP and IPTV. This paper presents an adaptive optimization algorithm in EDCA which strives to provide improved QoS from both delay and throughput perspectives. As a first step towards this goal, a Markov model of the EDCA mechanism has been introduced, which is subsequently used to compute the estimates of throughput and delay. Based on the analytical model that is validated via real-time simulations in OPNET, a new algorithm is proposed that maximizes throughput while decreasing delay and minimizing collision probability for a higher access category.

Keywords:

Distributed channel function, enhanced distributed channel access, IEEE 802.11e, wireless video,

Turkish Journal of Electrical Engineering and Computer Science-Cover

ISSN: 1300-0632
Yayın Aralığı: Yılda 6 Sayı
Yayıncı: TÜBİTAK

Arşiv

Sayıdaki Diğer Makaleler

Considering transmission loss for an economic dispatch problem without valve-point loading using an EP-EPSO algorithm

Sevugarathinam Muthu Vijaya PANDIAN, Keppanagowder THANUSHKODI

Resolution enhancement of video sequences by using discrete wavelet transform and illumination compensation

Sara IZADPANAHI, Çağrı ÖZÇINAR, Gholamreza ANBARJAFARI

Analysis, nonlinear control, and chaos generator circuit of another strange chaotic system

İhsan PEHLİVAN, Zhouchao WEI

On the degradation of OTA-C--based CMOS low-power filter circuits for biomedical instrumentation

Yasin ÖZCELEP, Ayten KUNTMAN, Hulusi Hakan KUNTMAN

Dynamic stability enhancement of a multimachine electric power system using STATCOM

Hasan Fayazi BOROUJENI, Reza HEMMATI, Sayed Mojtaba Shirvani BOROUJENI

Hybrid MPI+UPC parallel programming paradigm on an SMP cluster

Three-dimensional numerical simulation of crystal and crucible rotations during Czochralski growth of GexSi1-x single crystals

Serkan ABBASOĞLU

Model selection and score normalization for text-dependent single utterance speaker verification

Osman BÜYÜK, Mustafa Levent ARSLAN

Symbolic regression of crop pest forecasting using genetic programming

Symbolic Regression Of Crop Pest Forecas GENETİC

Adaptive optimization of EDCA parameters for improved QoS in multi-media applications

Alparslan ÇİL, Mehmet AKAR, Emin ANARIM