TY - JOUR
T1 - Transmit probability designs for wireless peer discovery with energy harvesting
AU - Kang, Seowoo
AU - Kong, Han Bae
AU - Song, Changick
AU - Lee, Hoon
AU - Lee, Inkyu
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) funded by the Korea Government (MSIP) under Grant 2014R1A2A1A10049769 and 2015R1C1A1A02036927
Publisher Copyright:
© 1997-2012 IEEE.
PY - 2017/3
Y1 - 2017/3
N2 - This letter studies wireless peer discovery (WPD), which identifies the existence of neighbor nodes to establish link in systems where some nodes can harvest energy. In conventional WPD, each node operates in three different modes, namely, packet transmitting (Tx), data receiving, and sleeping modes. However, since the sleeping nodes neither transmit nor receive data, to make more efficient use of the resources, we consider a scenario where the sleeping nodes harvest energy from the signals radiated by the Tx nodes. First, we analyze the average number of discovered peers (ADP) and the amount of energy harvested per unit area as a function of the node densities. Then, we examine the ADP performance by addressing an ADP maximizing problem under the energy harvesting constraints, which is difficult to solve due to non-convexity. To tackle the problem, we focus on the asymptotic performance in the interference-limited scenario and provide an insightful closed-form solution. Numerical simulations confirm that our solution achieves near-optimal performance over all levels of interference with reduced complexity.
AB - This letter studies wireless peer discovery (WPD), which identifies the existence of neighbor nodes to establish link in systems where some nodes can harvest energy. In conventional WPD, each node operates in three different modes, namely, packet transmitting (Tx), data receiving, and sleeping modes. However, since the sleeping nodes neither transmit nor receive data, to make more efficient use of the resources, we consider a scenario where the sleeping nodes harvest energy from the signals radiated by the Tx nodes. First, we analyze the average number of discovered peers (ADP) and the amount of energy harvested per unit area as a function of the node densities. Then, we examine the ADP performance by addressing an ADP maximizing problem under the energy harvesting constraints, which is difficult to solve due to non-convexity. To tackle the problem, we focus on the asymptotic performance in the interference-limited scenario and provide an insightful closed-form solution. Numerical simulations confirm that our solution achieves near-optimal performance over all levels of interference with reduced complexity.
KW - Energy harvesting
KW - peer discovery
KW - stochastic geometry
UR - http://www.scopus.com/inward/record.url?scp=85015808798&partnerID=8YFLogxK
U2 - 10.1109/LCOMM.2016.2625782
DO - 10.1109/LCOMM.2016.2625782
M3 - Article
AN - SCOPUS:85015808798
SN - 1089-7798
VL - 21
SP - 644
EP - 647
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 3
M1 - 7736971
ER -