TY - GEN
T1 - Lightweight forwarding protocols in energy harvesting wireless sensor networks
AU - Pu, Cong
AU - Gade, Tejaswi
AU - Lim, Sunho
AU - Min, Manki
AU - Wang, Wei
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/11/13
Y1 - 2014/11/13
N2 - Due to the unavoidable battery replacement or replenishment, diverse energy harvesting techniques have been integrated with Wireless Sensor Networks (WSNs) to overcome limited battery power and extend the network lifetime. However, variable transmission power levels based on non-uniform energy harvesting rates can incur asymmetric links. In this paper, we propose light-weight forwarding protocols to reliably deliver sensory data to a sink over time-varying asymmetric links in energy harvesting WSNs. A Weighted Confirmation (WCFM) scheme is proposed to differentiate multiple paths between a data source and a sink by assigning multiplicative weights on the paths. A Lazy Confirmation (LCFM) scheme is also proposed to assure a reverse path by waiting for extended communication range. In addition, an Asymmetric Link Aware Back off mechanism is proposed to avoid possible packet contentions and collisions. We evaluate the proposed techniques through extensive simulation experiments and their results indicate that the proposed forwarding protocols can be a viable approach in energy harvesting WSNs.
AB - Due to the unavoidable battery replacement or replenishment, diverse energy harvesting techniques have been integrated with Wireless Sensor Networks (WSNs) to overcome limited battery power and extend the network lifetime. However, variable transmission power levels based on non-uniform energy harvesting rates can incur asymmetric links. In this paper, we propose light-weight forwarding protocols to reliably deliver sensory data to a sink over time-varying asymmetric links in energy harvesting WSNs. A Weighted Confirmation (WCFM) scheme is proposed to differentiate multiple paths between a data source and a sink by assigning multiplicative weights on the paths. A Lazy Confirmation (LCFM) scheme is also proposed to assure a reverse path by waiting for extended communication range. In addition, an Asymmetric Link Aware Back off mechanism is proposed to avoid possible packet contentions and collisions. We evaluate the proposed techniques through extensive simulation experiments and their results indicate that the proposed forwarding protocols can be a viable approach in energy harvesting WSNs.
KW - Asymmetric link
KW - energy harvesting
KW - forwarding protocol
KW - wireless sensor networks
UR - http://www.scopus.com/inward/record.url?scp=84912567719&partnerID=8YFLogxK
U2 - 10.1109/MILCOM.2014.179
DO - 10.1109/MILCOM.2014.179
M3 - Conference contribution
AN - SCOPUS:84912567719
T3 - Proceedings - IEEE Military Communications Conference MILCOM
SP - 1053
EP - 1059
BT - Proceedings - 2014 IEEE Military Communications Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 33rd Annual IEEE Military Communications Conference, MILCOM 2014
Y2 - 6 October 2014 through 8 October 2014
ER -