Resource Allocation of Cooperative Integrated Sensing and Communication with a Graph Model

The focus on integrated sensing and communication (ISAC) is growing with explosive growth in the low-altitude economy. However, research on multi-site BS collaboration ISAC, which is vital for future UAV positioning and surveillance, is scarce. Therefore, this paper proposes a dynamic sub-graph (DSG) to analyze the performance and optimize resource allocation of the collaborative ISAC system. It constructs a DSG model that adjusts BS relationships based on resource schemes. The goal of resource allocation is to minimize system costs while meeting key space (KS) coverage and interference constraints. Simulations validate the approach's effectiveness in optimizing resource allocation for such systems.