TY - GEN
T1 - Mrs. Z
T2 - 25th IEEE International Conference on Network Protocols, ICNP 2017
AU - Cao, Yifeng
AU - Kong, Linghe
AU - He, Liang
AU - Chen, Guihai
AU - Wu, Min You
AU - He, Tian
PY - 2017/11/21
Y1 - 2017/11/21
N2 - ZigBee is a widely used wireless technology in low-power and short-range scenarios such as Internet of Things (IoT), sensor networks, and industrial wireless networks. However, the standard ZigBee supports only one data rate, 250Kbps, which thoroughly limits ZigBee's efficiency in dynamic wireless channels. In this paper, we propose Mrs.Z, a novel physical layer design to enable multi-rate selection in ZigBee. The key idea is to change the single spectrum spreading length to multiple ones. Correspondingly, to gracefully adapt to the channel variations, we propose a BER-based rate selection scheme, dividing bit errors into two categories: errors caused by the exceeding despreading threshold, which can be discovered in the physical layer, and caused by incorrect despreading, which is not visible until cyclic redundancy check (CRC) in the media access control (MAC) layer. Then, the receiver selects the rate based on the underlying negative impacts incurred by them and feedbacks to the transceiver. We implement Mrs.Z on USRPs and evaluate its performance in different scenarios. Results demonstrate that Mrs.Z achieves an improvement of 20% and 80% compared to the classic SoftRate and the standard ZigBee.
AB - ZigBee is a widely used wireless technology in low-power and short-range scenarios such as Internet of Things (IoT), sensor networks, and industrial wireless networks. However, the standard ZigBee supports only one data rate, 250Kbps, which thoroughly limits ZigBee's efficiency in dynamic wireless channels. In this paper, we propose Mrs.Z, a novel physical layer design to enable multi-rate selection in ZigBee. The key idea is to change the single spectrum spreading length to multiple ones. Correspondingly, to gracefully adapt to the channel variations, we propose a BER-based rate selection scheme, dividing bit errors into two categories: errors caused by the exceeding despreading threshold, which can be discovered in the physical layer, and caused by incorrect despreading, which is not visible until cyclic redundancy check (CRC) in the media access control (MAC) layer. Then, the receiver selects the rate based on the underlying negative impacts incurred by them and feedbacks to the transceiver. We implement Mrs.Z on USRPs and evaluate its performance in different scenarios. Results demonstrate that Mrs.Z achieves an improvement of 20% and 80% compared to the classic SoftRate and the standard ZigBee.
UR - http://www.scopus.com/inward/record.url?scp=85041393254&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85041393254&partnerID=8YFLogxK
U2 - 10.1109/ICNP.2017.8117546
DO - 10.1109/ICNP.2017.8117546
M3 - Conference contribution
AN - SCOPUS:85041393254
T3 - Proceedings - International Conference on Network Protocols, ICNP
BT - 2017 IEEE 25th International Conference on Network Protocols, ICNP 2017
PB - IEEE Computer Society
Y2 - 10 October 2017 through 13 October 2017
ER -