CAPD: a context-aware, policy-driven framework for secure and resilient IoBT operations
CAPD: a context-aware, policy-driven framework for secure and resilient IoBT operations
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DOI：
10.1117/12.2618106
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发表时间：
2022-06
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影响因子：
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通讯作者：
A. Joshi;Timothy W. Finin;R. Erbacher
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文献类型：
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作者：
A. Joshi;Timothy W. Finin;R. Erbacher
战场物联网（IoBT）将提高步兵部队的作战效能。然而，这需要传感器、无人机、作战设备和无人驾驶车辆等自主资产进行协作，安全地共享信息，并在有争议的多域作战中抵御对手的攻击。CAPD通过提供一个上下文感知的、策略驱动的框架来解决这个问题，该框架支持自治实体之间的数据和知识交换。我们提出了一个IoBT本体，便于控制信息共享，使系统之间的语义互操作性。它的主要贡献包括提供一个共享语义模式的知识图，与背景知识的集成，用于强制数据一致性和绘制推理的有效机制，以及支持基于属性的访问控制。IoBT中的传感器提供基于本体创建填充的知识图的数据。本文介绍了使用CAPD检测和减轻对手的行动。CAPD使用对感测数据和SPARQL查询的推理来实现情境感知。例如，对手可能会导致传感器故障或劫持，并破坏战术网络以降低视频监控。在这种情况下，CAPD使用基于本体的推理器来查看替代方法如何仍然支持使命。根据带宽的可用性，推理机通过主动转码或仅传输静止图像来启动降低帧速率的灰度视频的创建。这种对使命感测环境和攻击上下文进行推理的能力允许自主IoBT系统在有争议的条件下表现出弹性。
The Internet of Battlefield Things (IoBT) will advance the operational effectiveness of infantry units. However, this requires autonomous assets such as sensors, drones, combat equipment, and uncrewed vehicles to collaborate, securely share information, and be resilient to adversary attacks in contested multi-domain operations. CAPD addresses this problem by providing a context-aware, policy-driven framework supporting data and knowledge exchange among autonomous entities in a battlespace. We propose an IoBT ontology that facilitates controlled information sharing to enable semantic interoperability between systems. Its key contributions include providing a knowledge graph with a shared semantic schema, integration with background knowledge, efficient mechanisms for enforcing data consistency and drawing inferences, and supporting attribute-based access control. The sensors in the IoBT provide data that create populated knowledge graphs based on the ontology. This paper describes using CAPD to detect and mitigate adversary actions. CAPD enables situational awareness using reasoning over the sensed data and SPARQL queries. For example, adversaries can cause sensor failure or hijacking and disrupt the tactical networks to degrade video surveillance. In such instances, CAPD uses an ontology-based reasoner to see how alternative approaches can still support the mission. Depending on bandwidth availability, the reasoner initiates the creation of a reduced frame rate grayscale video by active transcoding or transmits only still images. This ability to reason over the mission sensed environment, and attack context permits the autonomous IoBT system to exhibit resilience in contested conditions.