Integrated Cognitive Symbiotic Computing and Ambient Backscatter Communication Network

Abstract

Ambient backscatter communication (AmBC) possesses signal reception and energy-harvesting capabilities, allowing providing wireless cognition through simple energy detection. In typical applications like industrial Internet of Things (IoT), cognitive AmBC (CAmBC) networks are required to offer passive communication, edge computing, and cognition capabilities. However, passive communication relies on the environment and has limited computing power, creating interdependencies among spectrum sensing, networking, and computational cognition. Moreover, the heterogeneous evaluation metrics for communication and computation make unified planning and management challenging. Therefore, this paper proposes the integrated cognitive symbiotic computing-AmBC (CSC-AmBC) based on symbiotic communication and cognitive radio. CSC-AmBC integrates AmBC communication and computational cognition capabilities in a task-oriented manner, sharing proximity and AmBC computing and communication (ACC) resources among primary and secondary tasks. Meta-Link with Tokens and two cognitive ACC reuse models is used to facilitate integration and enhance task execution efficiency, which introduces Places to accommodate the heterogeneous and variable ACC resources. Additionally, the task execution gain metric is introduced to evaluate the multi-task ACC resource utilization. Numerical results validate the cognition networking and the advantage of the proposed task execution gain of CSC-AmBC.