期刊
IEEE INTERNET OF THINGS JOURNAL
卷 8, 期 15, 页码 12266-12278出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JIOT.2021.3061087
关键词
Backscatter; Relays; Radio frequency; Data communication; Wireless communication; Internet of Things; Wireless sensor networks; Ambient backscatter communications (AmBC); link schedule; optimization; sampling; wireless-powered networks
资金
- National Natural Science Foundation of China [61802454]
This article studies a novel problem in wireless-powered IoT networks, aiming to maximize the number of uploaded samples by utilizing ambient backscatter communications (AmBC) to conserve energy. The mixed-integer linear program (MILP) and heuristic approach are proposed to set the operation mode of devices based on their residual energy and data, resulting in increased total data uploaded by devices compared to the case without AmBC.
This article studies a novel problem that aims to maximize the number of uploaded samples by devices in wireless-powered Internet of Things (IoT) networks. To do so, it takes advantage of ambient backscatter communications (AmBC) to help sensor devices conserve energy, and thus leaving them with more energy to collect samples. We outline a mixed-integer linear program (MILP) that aims to determine the operation mode of each device in each time slot in order to maximize the total amount of uploaded samples. We also present a heuristic approach to set the operation mode of devices based on their residual energy and data. Our results show that as compared to the case without AmBC, the total data uploaded by devices increases by 48% and 45% for the MILP and heuristic, respectively-both of which exploit AmBC.
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