ISAC-aided adaptive spectrum sharing scheme based on new cooperative game solutions

초록

Integrated sensing and communication (ISAC) is one of the leading technologies in sixth-generation (6 G) networks, and it has become a key enabler for future automation applications. To adaptively integrate sensing and communication services together, traditional spectrum sharing methods cannot be directly applied. In this paper, we consider a smart manufacturing platform with the terahertz (THz) band, and formulates a two-step spectrum sharing problem for ISAC services; the allocation problem at the first step, and the partitioning problem at the second step. To solve these two problems, we develop a new cooperative bargaining solution concept, called the reference point bargaining solution (RPBS), based on the ideas of classical proportional bargaining solutions. By employing the RPBS, the spectrum resource is jointly optimized to fully exploit potential sensing and communication functionalities. Therefore, each agent in the ISAC system may harness the full synergy of cooperative interactivity while maximizing mutual advantages in dual-function services. The main novelty of our proposed approach is to optimally trade-off between sensing and communication, and ensures a well-balanced ISAC system performance in smart manufacturing scenarios. Finally, the numerical simulations results elucidate the superiority of our proposed scheme over existing baseline ISAC protocols. The ISAC system throughput, agent payoff and fairness are improved by about 10 %, 10 %, and 15 %, respectively, than the existing ISAC-aided spectrum sharing protocols.

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