Age of Information in Decode-and-Forward Aided Wireless Powered Two-Hop Sensor Network

被引：0
|
作者：
Zheng, Yali [1 ]
Hu, Jie [1 ]
Yang, Kun [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Informat & Commun Engn, Chengdu 611731, Peoples R China
来源：
2021 IEEE 94TH VEHICULAR TECHNOLOGY CONFERENCE (VTC2021-FALL) | 2021年
基金：
中国国家自然科学基金;
关键词：
Age of information (AoI); wireless power transfer (WPT); two-hop; full-duplex (FD) relay; decode-and-forward (DF); INTEGRATED DATA; ENERGY;
D O I：
10.1109/VTC2021-FALL52928.2021.9625239
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In order to meet timeliness requirements arising from sensing applications, age of information (AoI) was proposed to characterise the freshness of the received updates. In this paper. we study the average Aol for a two-hop network, in which a relay wirelessly powered by a hybrid-access point (HAP) receives environmental monitoring information update from a sensor and forwards it to the H-AP. We optimise the transmit power of the relay for the sake of minimising the average AoI in the whole wireless powered relay aided communication nework (WPRCN). The wireless powered relay adopts a decodeand-forward strategy by considering the energy causality. Our simulation results demonstrate the impact of the relay's transmit power on the average Aol, while the information freshness of the WPRCN is optimised by our power allocation scheme at the relay.
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页数：5
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