ISAC信道建模标准化探讨Discussion-on-Standardization-of-ISAC-Channel-Modeling-英-18页_2mb

报告摘要

The session discusses progress in standardizing Integrated Sensing and Communication (ISAC) channel modeling within 3GPP, specifically under RAN #101 and FR3 contributions.
There is strong interest in ISAC channel modeling, including explorations of new spectrum (7-24 GHz), with potential for RAN-level study items focusing initially on channel modeling.
Key documents referenced include RW S-230488, RP-231540, and RP-232617.

Define channel modeling details for sensing using 3GPP standards, incorporating relevant measurements and focusing on specific scenarios.
Initial objectives include modeling sensing targets and background environments, mobility patterns, and spatial consistency.
3GPP is to select a small number of ISAC use cases from TR 22.837 to identify required information for scenarios, frequency ranges, and sensing modes.

Scenarios like UAV detection and tracking, pedestrian/animal intrusion detection, and environmental monitoring are highlighted.
"Object detection and tracking" has the highest priority for channel modeling, emphasizing the need to extend TR 38.901 models with enhancements for specific cases.
Proposed scenarios include various applications such as intelligent transportation, agriculture, and healthcare.

Six sensing modes are considered: mono-static, bi-static, and multi-static variants.
Key performance metrics include distance, angular, and velocity resolution and accuracy, e.g., Δd = λ²/(4π²σθθ), derived from input parameters.
Modeling must account for factors like RCS, Doppler shifts, and environmental consistency.

Models should be based on TR 38.901 but revised for ISAC, including large-scale and small-scale fading related to sensing targets.
Proposed schemes include concatenation-based (cascading links from transmitter to target to receiver) and non-concatenation-based approaches.
Key adaptations involve recoupling background and target-related channels, modifying parameters like path loss, shadowing, and Doppler factors.
Environment-specific models are needed, with directions for reference to other standards.

Standardization efforts show high interest, with ISAC channel modeling advancing in 3GPP.
Priorities include UAS and intelligent scenario applications, with bi-static sensing modes being a focus.
Challenges remain, including model modifications, mobility consistency, and the need for more measurement data.
Further discussion and modeling refinements are required.