Semantic communication, an emerging feature for future networks like 6G, emphasizes message meaning. Yet, the open nature of a wireless channel poses security risks for semantic communications. In this paper we derive information-theoretic limits, considering the semantic source model within a wiretap channel framework. Under separate equivocation and distortion conditions for semantics and observed data, we present the general outer and inner bounds of the region. We also reduce the general region to a case of Gaussian source and channel and provide numerical evaluation.

翻译：语义通信作为未来网络（如6G）的新兴特性，着重强调信息的含义。然而，无线信道的开放性给语义通信带来了安全风险。本文在窃听信道框架内考虑语义信源模型，推导了信息论极限。在语义与观测数据分别满足等效保密性和失真条件的前提下，我们给出了该区域的一般外边界和内边界。此外，我们将一般区域简化为高斯信源与信道情形，并提供了数值评估。