  Emerging applications such as autonomous driving and Internet of things (IoT)
services put forward the demand for simutaneous sensing and communication
functions in the same system. Integrated sensing and communication (ISAC) has
the potential to meet the demands of ubiquitous communication and
high-precision sensing due to the advantages of spectrum and hardware resource
sharing, as well as the mutual enhancement of sensing and communication.
However, ISAC system faces severe interference requiring effective interference
suppression, avoidance, and exploitation techniques. This article provides a
comprehensive survey on the interference management techniques in ISAC systems,
involving network architecture, system design, signal processing, and resource
allocation. We first review the channel modeling and performance metrics of the
ISAC system. Then, the methods for managing self-interference (SI), mutual
interference (MI), and clutter in a single base station (BS) system are
summarized, including interference suppression, interference avoidance and
interference exploitation methods. Furthermore, cooperative interference
management methods are studied to address the cross-link interference (CLI) in
a coordinated multipoint ISAC (CoMP-ISAC) system. Finally, future trends are
revealed. This article may provide a reference for the study of interference
management in ISAC systems.
