TY - GEN
T1 - Enhancing reliability to boost the throughput over screen-camera links
AU - Wang, Anran
AU - Ma, Shuai
AU - Hu, Chunming
AU - Huai, Jinpeng
AU - Peng, Chunyi
AU - Shen, Guobin
N1 - Publisher Copyright:
© 2014 by the Association for Computing Machinery, Inc. (ACM).
PY - 2014/9/7
Y1 - 2014/9/7
N2 - With the rapid proliferation of camera-equipped smart de- vices (e.g., smartphones, pads, tablets), visible light com- munication (vlc) over screen-camera links emerges as a novel form of near-field communication. Such communi- cation via smart devices is highly competitive for its user- friendliness, security, and infrastructure-less (i.e., no depen- dency on WiFi or cellular infrastructure). However, exist- ing approaches mostly focus on improving the transmission speed and ignore the transmission reliability. Considering the interplay between the transmission speed and reliability towards effective end-to-end communication, in this paper, we aim to boost the throughput over screen-camera links by enhancing the transmission reliability. To this end, we propose RDCode, a robust dynamic barcode which enables a novel packet-frame-block structure. Based on the layered structure, we design different error correction schemes at three levels: intra-blocks, inter-blocks and inter-frames, in order to verify and recover the lost blocks and frames. Finally, we implement RDCode and experimentally show that RDCode reaches a high level of transmission reliability (e.g., reducing the error rate to 10%) and yields at least two-fold improvement of transmission rate, compared with the exist- ing state-of-the-art approach COBRA.
AB - With the rapid proliferation of camera-equipped smart de- vices (e.g., smartphones, pads, tablets), visible light com- munication (vlc) over screen-camera links emerges as a novel form of near-field communication. Such communi- cation via smart devices is highly competitive for its user- friendliness, security, and infrastructure-less (i.e., no depen- dency on WiFi or cellular infrastructure). However, exist- ing approaches mostly focus on improving the transmission speed and ignore the transmission reliability. Considering the interplay between the transmission speed and reliability towards effective end-to-end communication, in this paper, we aim to boost the throughput over screen-camera links by enhancing the transmission reliability. To this end, we propose RDCode, a robust dynamic barcode which enables a novel packet-frame-block structure. Based on the layered structure, we design different error correction schemes at three levels: intra-blocks, inter-blocks and inter-frames, in order to verify and recover the lost blocks and frames. Finally, we implement RDCode and experimentally show that RDCode reaches a high level of transmission reliability (e.g., reducing the error rate to 10%) and yields at least two-fold improvement of transmission rate, compared with the exist- ing state-of-the-art approach COBRA.
KW - Dynamic barcodes
KW - Reliability
KW - Smartphones
KW - Transmission
UR - https://www.scopus.com/pages/publications/84907815039
U2 - 10.1145/2639108.2639135
DO - 10.1145/2639108.2639135
M3 - 会议稿件
AN - SCOPUS:84907815039
T3 - Proceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM
SP - 41
EP - 52
BT - MobiCom 2014 - Proceedings of the 20th Annual
PB - Association for Computing Machinery
T2 - 20th ACM Annual International Conference on Mobile Computing and Networking, MobiCom 2014
Y2 - 7 September 2014 through 11 September 2014
ER -