Integrated Sensing, Communication, and Powering (ISCAP): Towards Multi-functional 6G Wireless Networks
arxiv(2024)
摘要
This article presents a novel multi-functional system for a sixth-generation
(6G) wireless network with integrated sensing, communication, and powering
(ISCAP), which unifies integrated sensing and communication (ISAC) and wireless
information and power transfer (WIPT) techniques. The multi-functional ISCAP
network promises to enhance resource utilization efficiency, reduce network
costs, and improve overall performance through versatile operational modes.
Specifically, a multi-functional base station (BS) can enable multi-functional
transmission, by exploiting the same radio signals to perform
target/environment sensing, wireless communication, and wireless power transfer
(WPT), simultaneously. Besides, the three functions can be intelligently
coordinated to pursue mutual benefits,i.e., wireless sensing can be leveraged
to enable light-training or even training-free WIPT by providing side-channel
information, and the BS can utilize WPT to wirelessly charge low-power devices
for ensuring sustainable ISAC. Furthermore, multiple multi-functional BSs can
cooperate in both transmission and reception phases for efficient interference
management, multi-static sensing, and distributed energy beamforming. For these
operational modes, we discuss the technical challenges and potential solutions,
particularly focusing on the fundamental performance tradeoff limits,
transmission protocol design, as well as waveform and beamforming optimization.
Finally, interesting research directions are identified.
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