Abstract
The H.264 video compression technique enjoys the merit of good video quality with high compression rate; therefore, it has been widely applied in delivering video content. In IEEE 802.11ac wireless local area networks, enhanced distributed channel access (EDCA) is the primarily adopted access control mechanism for multimedia traffic transmission. However, the performance is degraded due to the unpredictable delay caused by its inefficient backoff procedure. To achieve high quality of service/experience, this paper proposes a multipolling controlled access (MPCA) scheme to guarantee the latency in delivering important video frames while reducing transmission overhead.We also propose a cross-layer designed quality adjustment strategy to maximize the visual experience. Furthermore, the downlinkmultiuser multiple-input-multiple-output feature in IEEE 802.11ac is exploited to enhance the reliability of MPCA. Theoretical analysis is provided to show high efficiency of MPCA. Simulation results indicate that MPCA has higher throughput, lower packet delay, lower packet loss, and higher peak signal-to-noise ratio than the EDCA.
| Original language | English |
|---|---|
| Article number | 7115059 |
| Pages (from-to) | 2546-2555 |
| Number of pages | 10 |
| Journal | IEEE Systems Journal |
| Volume | 11 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2017 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Control and Systems Engineering
- Electrical and Electronic Engineering
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QoS/QoE support for H.264/AVC video stream in IEEE 802.11ac WLANs. / Chang, Che Yu; Yen, Hsu Chun; Lin, Chun Cheng; Deng, Der-Jiunn.
In: IEEE Systems Journal, Vol. 11, No. 4, 7115059, 01.01.2017, p. 2546-2555.Research output: Contribution to journal › Article
TY - JOUR
T1 - QoS/QoE support for H.264/AVC video stream in IEEE 802.11ac WLANs
AU - Chang, Che Yu
AU - Yen, Hsu Chun
AU - Lin, Chun Cheng
AU - Deng, Der-Jiunn
PY - 2017/1/1
Y1 - 2017/1/1
N2 - The H.264 video compression technique enjoys the merit of good video quality with high compression rate; therefore, it has been widely applied in delivering video content. In IEEE 802.11ac wireless local area networks, enhanced distributed channel access (EDCA) is the primarily adopted access control mechanism for multimedia traffic transmission. However, the performance is degraded due to the unpredictable delay caused by its inefficient backoff procedure. To achieve high quality of service/experience, this paper proposes a multipolling controlled access (MPCA) scheme to guarantee the latency in delivering important video frames while reducing transmission overhead.We also propose a cross-layer designed quality adjustment strategy to maximize the visual experience. Furthermore, the downlinkmultiuser multiple-input-multiple-output feature in IEEE 802.11ac is exploited to enhance the reliability of MPCA. Theoretical analysis is provided to show high efficiency of MPCA. Simulation results indicate that MPCA has higher throughput, lower packet delay, lower packet loss, and higher peak signal-to-noise ratio than the EDCA.
AB - The H.264 video compression technique enjoys the merit of good video quality with high compression rate; therefore, it has been widely applied in delivering video content. In IEEE 802.11ac wireless local area networks, enhanced distributed channel access (EDCA) is the primarily adopted access control mechanism for multimedia traffic transmission. However, the performance is degraded due to the unpredictable delay caused by its inefficient backoff procedure. To achieve high quality of service/experience, this paper proposes a multipolling controlled access (MPCA) scheme to guarantee the latency in delivering important video frames while reducing transmission overhead.We also propose a cross-layer designed quality adjustment strategy to maximize the visual experience. Furthermore, the downlinkmultiuser multiple-input-multiple-output feature in IEEE 802.11ac is exploited to enhance the reliability of MPCA. Theoretical analysis is provided to show high efficiency of MPCA. Simulation results indicate that MPCA has higher throughput, lower packet delay, lower packet loss, and higher peak signal-to-noise ratio than the EDCA.
UR - http://www.scopus.com/inward/record.url?scp=85028629267&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85028629267&partnerID=8YFLogxK
U2 - 10.1109/JSYST.2015.2431291
DO - 10.1109/JSYST.2015.2431291
M3 - Article
AN - SCOPUS:85028629267
VL - 11
SP - 2546
EP - 2555
JO - IEEE Systems Journal
JF - IEEE Systems Journal
SN - 1932-8184
IS - 4
M1 - 7115059
ER -