QoS/QoE Support for H.264/AVC Video Stream in IEEE 802.11ac WLANs

Chang, Chiung Chih; Yen, Hsu-Chun; Lin, Chun-Cheng; Deng, Der-Jiunn

doi:10.1109/jsyst.2015.2431291

Cited by 21 publications

(16 citation statements)

References 26 publications

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“…The 802.11n the access point transmit multiple data streams to single clients but in 802.11ac the access point can transmit multiple data stream to multiple clients [16]. The clients received the higher data rate using MU-MIMO as compared to MIMO because in MU-MIMO the packets can be transmitted using maximum data rate per clients [9]. The multiple spatial streams i.e., 8 supported by IEEE 802.11ac helps distribution of data streams to multiple clients/stations hence improving the efficiency of MU-MIMO [17].…”

Section: Discussionmentioning

confidence: 99%

“…The purpose of this research is to test 802.11ac with the legacy protocol 802.11a/n for throughput, range and efficiency of typical heterogeneous wireless network deployed in a campus. The performance evaluation of IEEE 802.11ac devices has been widely explored over simulation platform, although there is not much experimental evaluation done in practical scenarios [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Throughput and Range Performance Investigation for IEEE 802.11a, 802.11n and 802.11ac Technologies in an On-Campus Heterogeneous Network Environment

Dhawankar

Minh

Aslam

2018

2018 11th International Symposium on Communication Systems, Networks &Amp; Digital Signal Processing (CSNDSP)

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This paper presents an analysis and measurement results for an experimental study on throughput, range and efficiency performance of IEEE 802.11a, 802.11n and 802.11ac standards in an indoor environment on a typical University Campus. The investigation considers a number of key system features including PHY layers mainly, Multiple Input Multiple Output (MIMO), MultiUser Multiple Input Multiple Output (MU-MIMO), Channel Bonding and Short-Guard Interval (SGI) in the heterogeneous wireless network. The experiment is carried out for the IEEE 802.11ac standard along with the legacy protocols 802.11a/n in a heterogeneous environment which is typically deployed on Campus. The results compare the maximum throughput of IEEE 802.11 standard amendments, in terms of theoretical and experimental throughput over TCP and UDP protocols for different set of parameters and features to check their efficiency and range. To achieve this desired goal, different tests are proposed. The result of these tests will help to determine the capability of each protocol and their efficiency in a practical heterogeneous on-campus environment.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Throughput and Range Performance Investigation for IEEE 802.11a, 802.11n and 802.11ac Technologies in an On-Campus Heterogeneous Network Environment

Dhawankar

Minh

Aslam

2018

2018 11th International Symposium on Communication Systems, Networks &Amp; Digital Signal Processing (CSNDSP)

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“…Chang et al [6] proposed the MPCA (multi-polling controlled access) technique to implement a TDMA (time division multiple access)-like contention-free mechanism to support the QoS of video traffic by ensuring a tolerable video frame delivery delay. In the proposed mechanism, a station can send an additional traffic stream (ADD−TS) request to an HC (hybrid controller) to initiate data transmission.…”

Section: Related Workmentioning

confidence: 99%

“…At higher collision rates, the video quality is further reduced to transmit only I frames. The techniques presented in [6] require the continuous exchange of control messages for every packet transmission. To overcome the high transmission overhead, Shamieh and Wang [13] proposed a solution to reduce transmission capacity consumption and time delay introduced by control messages.…”

Section: Related Workmentioning

confidence: 99%

“…Many researchers have worked to improve the QoS of individual video flows in WLANs [6]- [8], and [9]. The techniques [6]- [8] can maintain video streaming quality by dropping low-priority video frames and allocate additional bandwidth to high-quality video frames. However, prioritising high-quality video frames in backlogged conditions can deteriorate end-users' visual quality due to the interruption in video streaming.…”

Section: Introductionmentioning

confidence: 99%

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Quality of Service- and Fairness-Aware Resource Allocation Techniques for IEEE802.11ac WLAN

Nosheen

Khan

2021

IEEE Access

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Increased demand for high-quality multimedia applications over IEEE802.11 networks has further motivated service providers to improve the QoS (quality of service) for all types of network services. IEEE802.11ac is one of the advanced WLAN standards that provides wideband transmission channels and higher data rates, which are vital to support very high-throughput services. However, due to the use of the CSMA/CA-based random access packet transmission technique, the QoS and service fairness criteria cannot always be maintained, particularly for variable bit rate services. This paper proposes new packet scheduling algorithms to support consistently high QoS and intra-service fairness for high data rate video streams. We name the proposed algorithms FRA − TXOP (Flow Rate Adaptive Transmission Opportunity) and EAS (Enhanced Access Scheduler). These algorithms offer appropriate QoS and fairness to video services in a CSMA/CA network. The FRA − TXOP algorithm allocates the transmission resources according to the channel congestion levels experienced by video flows to improve and maintain consistent QoS values. At the same time, the EAS algorithm offers service fairness among the video streams by appropriately scheduling them on the downlink channel. The EAS algorithm is implemented on top of the FRA − TXOP algorithm to achieve high QoS and service fairness among video streams. An NS-3 simulation model is developed to evaluate the performance of the proposed algorithms. The performance analysis shows that the proposed algorithms enhance the video flow QoS in terms of throughput and packet delay as well as improve the fairness among the video flows compared to other TXOP algorithms.

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Video Conferencing: The Architect’s Assistant, a Trailblazing Algorithm for Optimal Technology Choice

Ali,

Al-Qerem

2024

Lecture Notes in Networks and Systems

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QoS/QoE Support for H.264/AVC Video Stream in IEEE 802.11ac WLANs

Cited by 21 publications

References 26 publications

Throughput and Range Performance Investigation for IEEE 802.11a, 802.11n and 802.11ac Technologies in an On-Campus Heterogeneous Network Environment

Throughput and Range Performance Investigation for IEEE 802.11a, 802.11n and 802.11ac Technologies in an On-Campus Heterogeneous Network Environment

Quality of Service- and Fairness-Aware Resource Allocation Techniques for IEEE802.11ac WLAN

Video Conferencing: The Architect’s Assistant, a Trailblazing Algorithm for Optimal Technology Choice

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