LG Uplus said on the 17th it has published the "2025 6G white paper" on integrated sensing and communication (ISAC; Integrated Sensing and Communication), a technology drawing attention as a core capability for the 6G era.
This white paper, a follow-up to the 6G white paper released in 2023, presents directions for the 6G Network to evolve beyond consolidation into an intelligent platform that senses and interacts with its environment.
ISAC is a technology that uses existing communications infrastructure like a sensor to detect people or objects even if they are not carrying a device. For example, it can recognize pedestrians not holding smartphones, obstacles on the road, and even subtle vibrations of factory machines through the communications network. This means the network functions like a sensor that "sees and feels" its surroundings, beyond merely sending and receiving data.
The white paper explains the principles and architecture of ISAC technology, introducing methods to integrate sensing functions based on the similarity between conventional radar and 5G base station antennas, along with various sensing architectures. It also covers the latest technology trends that implement sensing without degrading communications performance by using OFDM (orthogonal frequency division multiplexing)-based sensing signals.
In particular, LG Uplus noted that ISAC technology has potential to expand into high–value-added industries such as Smart City, Autonomous Driving, and XR, and said it expects new revenue through a "Sensing-as-a-Service" model that leverages existing infrastructure. The white paper presents major use scenarios such as sensing-based communications optimization and communications-based sensing expansion, and explains KPIs for each scenario in detail.