Abstract
In this study, optimal pricing and user cooperation schemes are considered in a wireless powered communication network (WPCN), where multiple users harvest energy from a dedicated hybrid access point (HAP, as a power station in the downlink) and transmit their independent information to HAP (as an information receiving station in the uplink) by using the harvested energy. Due to the doubly near-far problem, best cooperation-user selection scheme where the dedicated helping user which is nearer to the H-AP and in general has better channel condition both for DL energy harvesting as well as UL information transmission from source user uses its harvested energy to help forward the source user’s information to H-AP is proposed. Moreover, in the WPCN, the energy is scarce, users have incentive to refuse to cooperate in order to conserve resource. We propose a pricing mechanism to incentivize the helping user to cooperate the uplink transmission. Two transmission protocols for source-user centric and helping-user centric with pricing mechanism are investigated. We formulate the pricing and resource allocation problem as optimization problem and propose efficient algorithms by jointly user-selection and resource allocation to maximize the energy efficient and price-performance ratio. Numerical results show that the proposed scheme with pricing can enhance the source user’s performance with lower cost. Moreover, the pricing mechanisms can incentivize the helping user to cooperate other users’ to decrease the system energy cost.










Similar content being viewed by others
References
Varshney, L. R. (2008). Transporting information and energy simultaneously. In 2008 IEEE International Symposium on Information Theory, Toronto, ON (pp. 1612–1616).
Zhou, X., Zhang, R., & Ho, C. K. (2013). Wireless information and power transfer: Architecture design and rate-energy tradeoff. IEEE Transactions on Communications, 61(11), 4754–4767.
Liu, L., Zhang, R., & Chua, K. C. (2013). Wireless information and power transfer: A Dynamic power splitting approach. IEEE Transactions on Communications, 61(9), 3990–4001.
Liu, L., Zhang, R., & Chua, K. C. (2013). Wireless information transfer with opportunistic energy harvesting. IEEE Transactions on Wireless Communications, 12(1), 288–300.
Zhang, R., & Ho, C. K. (2013). MIMO Broadcasting for simultaneous wireless information and power transfer. IEEE Transactions on Wireless Communications, 12(5), 1989–2001.
Bi, S., Ho, C. K., & Zhang, R. (2015). Wireless powered communication: opportunities and challenges. IEEE Communications Magazine, 53(4), 117–125.
Ju, H., & Zhang, R. (2014). Throughput maximization in wireless powered communication networks. IEEE Transactions on Wireless Communications, 13(1), 418–428.
Wu, Q., Tao, M., Kwan Ng, D. W., Chen, W., & Schober, R. (2016). Energy-efficient resource allocation for wireless powered communication networks. IEEE Transactions on Wireless Communications, 15(3), 2312–2327.
Ju, H., & Zhang, R. (2014). User cooperation in wireless powered communication networks. In 2014 IEEE Global Communications Conference, Austin, TX (pp. 1430–1435).
Huang, C., Zhang, R., & Cui, S. (2013). Throughput maximization for the Gaussian relay channel with energy harvesting constraints. IEEE Journal on Selected Areas in Communications, 31(8), 1469–1479.
Ding, Z., Perlaza, S. M., Esnaola, I., & Poor, H. V. (2014). Power allocation strategies in energy harvesting wireless cooperative networks. IEEE Transactions on Wireless Communications, 13(2), 846–860.
Krikidis, I., Timotheou, S., & Sasaki, S. (2012). RF energy transfer for cooperative networks: Data relaying or energy harvesting? IEEE Communications Letters, 16(11), 1772–1775.
Guo, Y., Duan, L., & Zhang, R. (2016). Optimal pricing and load sharing for energy saving with cooperative communications. IEEE Transactions on Wireless Communications, 15(2), 951–964.
Acknowledgements
This work was partly supported by the National Natural Science Foundation of China (61461029 and 61561032) and the Natural Science Foundation of Jiangxi Province (20162BCB23010 and 20161BAB202043).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhu, C., Yang, D., Shen, X. et al. Optimal Pricing and User Cooperation for Utility-Efficient Wireless Powered Communications. Wireless Pers Commun 96, 599–619 (2017). https://doi.org/10.1007/s11277-017-4187-2
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11277-017-4187-2