Adaptive source rate control for wireless video conferencing

1997 ◽  
Author(s):  
Hang Liu ◽  
Magda El Zarki
Keyword(s):  
Rate Control ◽  
Video Conferencing ◽  
Wireless Video ◽  
Source Rate ◽  
Source Rate Control

scholarly journals Cross-Layer Design of Source Rate Control and Congestion Control for Wireless Video Streaming

2007 ◽  
Vol 2007 ◽  
pp. 1-13 ◽  
Author(s):  
Peng Zhu ◽  
Wenjun Zeng ◽  
Chunwen Li
Keyword(s):  
Congestion Control ◽  
Video Streaming ◽  
Rate Control ◽  
Cross Layer ◽  
Cross Layer Design ◽  
Transport Protocol ◽  
Wireless Video ◽  
Source Rate ◽  
Wireless Video Streaming ◽  
Source Rate Control

Cross-layer design has been used in streaming video over the wireless channels to optimize the overall system performance. In this paper, we extend our previous work on joint design of source rate control and congestion control for video streaming over the wired channel, and propose a cross-layer design approach for wireless video streaming. First, we extend the QoS-aware congestion control mechanism (TFRCC) proposed in our previous work to the wireless scenario, and provide a detailed discussion about how to enhance the overall performance in terms of rate smoothness and responsiveness of the transport protocol. Then, we extend our previous joint design work to the wireless scenario, and a thorough performance evaluation is conducted to investigate its performance. Simulation results show that by cross-layer design of source rate control at application layer and congestion control at transport layer, and by taking advantage of the MAC layer information, our approach can avoid the throughput degradation caused by wireless link error, and better support the QoS requirements of the application. Thus, the playback quality is significantly improved, while good performance of the transport protocol is still preserved.

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