標題: Cross-Layer Error Recovery Scheme for Data Transmission over 4G Wireless Networks
作者: Yang, Wen-Chih
Chen, Ming-Dao
Hsiao, Hsu-Feng
資訊工程學系
Department of Computer Science
關鍵字: channel coding;automatic repeat request;cross-layer error control
公開日期: 2015
摘要: In a video streaming application, quality of experience for a user can be affected by various factors. The video quality can be improved if the effective throughput can be increased at an acceptable packet loss rate and low latency. To reduce the packet loss rate over error-prone channels, a cross-layer error control scheme is developed for heterogeneous data transmission over wireless channels in this paper. The error control scheme utilizes both link-layer automatic repeat request and application-layer channel coding. The automatic repeat request is served as providing a basic level of loss recovery without introducing intolerable delay, while the application-layer channel coding is based on the previously developed layer-aligned multipriority rateless codes to satisfy a desired packet loss rate at a minimal bandwidth overhead. The cross-layer architecture of the error control scheme will control the retransmission timers based on the channel conditions while the control parameters of the layer-aligned multipriority rateless codes will be determined to fulfill the heterogeneous requirement of overall packet loss rate required by an application at a minimal cost. The improved performance of the developed cross-layer scheme is confirmed with the experiments using a real-world 4G system.
URI: http://hdl.handle.net/11536/135724
ISBN: 978-1-4799-8854-9
ISSN: 2379-1268
期刊: 2015 24TH WIRELESS AND OPTICAL COMMUNICATION CONFERENCE (WOCC)
起始頁: 133
結束頁: 137
Appears in Collections:Conferences Paper