scholarly journals Unified Error Control Framework with Cross-Layer Interactions for Efficient H.264 Video Transmission over IEEE 802.11e Wireless LAN

2006 ◽  
pp. 25-32
Author(s):  
Jeong-Yong Choi ◽  
Jitae Shin
Keyword(s):  
Wireless Lan ◽  
Error Control ◽  
Video Transmission ◽  
Ieee 802.11E ◽  
Cross Layer ◽  
Control Framework

A Cross-Layer Design for Video Streaming Over 802.11e HCCA Wireless Network

2013 ◽  
pp. 261-273
Author(s):  
Hongli Luo
Keyword(s):  
Wireless Network ◽  
Video Streaming ◽  
Wireless Lan ◽  
Video Transmission ◽  
Video Codec ◽  
Ieee 802.11E ◽  
Cross Layer ◽  
Cross Layer Design ◽  
Queuing Delay

Video transmission over wireless networks has quality of service (QoS) requirements and the time-varying characteristics of wireless channels make it a challenging task. IEEE 802.11 Wireless LAN has been widely used for the last mile connection for multimedia transmission. In this paper, a cross-layer design is presented for video streaming over IEEE 802.11e HCF Controlled Channel Access (HCCA) WLAN. The goal of the cross-layer design is to improve the quality of the video received in a wireless network under the constraint of network bandwidth. The approach is composed of two algorithms. First, an allocation of optimal TXOP is calculated which aims at maintaining a short queuing delay at the wireless station at the cost of a small TXOP allocation. Second, the transmission of the packets is scheduled according to the importance of the packets in order to maximize the visual quality of video. The approach is compared with the standard HCCA on NS2 simulation tools using H.264 video codec. The proposed cross-layer design outperforms the standard approach in terms of the PSNRs of the received video. This approach reduces the packet loss to allow the graceful video degradation, especially under heavy network traffic.

scholarly journals A Cross Video-MAC Layer Approach for Generating Adaptive FMO Map

1970 ◽  
Vol 6 (1) ◽  
pp. 58-63
Author(s):  
Tien Huu Vu ◽  
Supavadee Aramvith
Keyword(s):  
Video Transmission ◽  
Video Quality ◽  
Arrival Rate ◽  
Ieee 802.11E ◽  
Cross Layer ◽  
Cross Layer Design ◽  
Mac Layer ◽  
Medium Access ◽  
Error Resiliency ◽  
Map Generation

Recent researches in video transmission over heterogeneous networks move toward cross-layer design to realize the optimal video quality. In this work, we investigate the cross layer approach between H.264 video coding layer and IEEE 802.11e Medium Access Control (MAC) layer on the issues of how to improve error resiliency of H.264 video using Flexible Macroblock Ordering (FMO), and how to reduce packet dropping rate at MAC layer. We propose an adaptive FMO map generation to separate high and low important macroblocks to different priority queues based on the overflow state of MAC layer queues. The arrival rate of packets to queues is thus changed to reduce the queue overflow and to decrease of the packet droppingrates at queues. Experimental results show that using the proposed scheme can reduce the packet drop rate at the queues resulting in the reduction of packet loss rate and the improvement of the average PSNR.

scholarly journals Cross Layer Based Congestion Resistant Routing using Allied ARQ/FEC for Video Transmission for WSN

2019 ◽  
Vol 8 (3S2) ◽  
pp. 327-332
Keyword(s):  
Error Control ◽  
Video Transmission ◽  
Signal Strength ◽  
Cross Layer ◽  
Parity Check ◽  
Video Traffic ◽  
Received Signal Strength Indicator ◽  
Routing Policy ◽  
Low Density Parity Check ◽  
Parity Check Codes

An analytical model is considered for reducing jamming in video transmission for video traffic related applications. Cross layer based congestion resistant routing using allied ARQ/FEC with LDPC scheme is proposed for reducing the error control in video streaming. Allied ARQ with FEC mechanism is applied during packet reception process. Active pass on nodes are selected for the error free transmission and cross layer mechanism is applied for choosing better routing policy. The received packets are checked for its correctness if it is corrupted then it is verified by using the Received Signal Strength Indicator (RSSI). Packets that corrupted are encoded and retransmitted by using low density parity check codes for reducing further retransmissions.

An Improved Cross-Layer Architecture for H.264/SVC Transmission over IEEE 802.11e Networks

2013 ◽  
Vol 303-306 ◽  
pp. 1933-1938
Author(s):  
Yun Feng Wang ◽  
Hong Bing Ma
Keyword(s):  
Video Transmission ◽  
Scalable Video Coding ◽  
Video Quality ◽  
Wireless Channel ◽  
Ieee 802.11E ◽  
Cross Layer ◽  
Cross Layer Design ◽  
Application Layer ◽  
Mapping Mechanism

As an extension to H.264, Scalable Video Coding (SVC) provides three types of scalability, which makes it more suitable for the video transmission over wireless networks. IEEE 802.11e introduces EDCA mechanism to support Quality of Service (QoS). In this paper, a scheme, based on cross-layer design between application layer and MAC layer, is proposed to improve SVC transmission over 802.11e networks. With optimized mapping mechanism and queue management, the approach has taken the SVC video priority and network congestion status into consideration. Simulation demonstrates the effectiveness of the algorithm. The experimental results show that our approach can get full use of the limited wireless channel resources, by which SVC packets with high priority can obtain better protection, thus the decoding video quality can be significantly improved.

Cross-layer video transmission over IEEE 802.11e multihop networks

2013 ◽  
Vol 74 (1) ◽  
pp. 5-23 ◽  
Author(s):  
Zheng Wan ◽  
Naixue Xiong ◽  
Laurence T. Yang
Keyword(s):  
Video Transmission ◽  
Multihop Networks ◽  
Ieee 802.11E ◽  
Cross Layer
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