RAN Sensing Management for Low-Latency Wireless Tracking
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Solution Overview
Problem
Current wireless communications systems face network latency issues when performing radio sensing operations, particularly in tracking applications, due to the placement of sensing functions in the core network, which is distant from the target objects, leading to sub-optimal accuracy and latency in tracking and reporting changes in object orientation, position, and mobility.
Innovation Solution
Introduce a Sensing Management Component (SMC) within the Radio Access Network (RAN) architecture, enabling low-latency sensing operations by integrating sensing functions closer to the target devices, and supporting new sensing requests and triggers from RAN nodes and UEs, with enhanced communication and signaling between the SMC and Core Network Sensing Function (CN SF).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensing functions are placed in the core network, then centralized management is achieved, but network latency increases and tracking accuracy deteriorates
Solution Approach 1:
The sensing management function is segmented and deployed at the RAN level (gNB) rather than centralized in the core network. This allows sensing operations to be performed locally near the target objects, reducing latency while maintaining management capabilities through the SMC component that coordinates sensing requests and measurements.
Solution Approach 2:
Sensing functions are deployed locally at the RAN node close to the target objects, enabling low-latency sensing operations. The SMC at the gNB level provides localized management and coordination, achieving both proximity benefits and centralized management advantages.
2Measurement precision
If sensing operations are performed remotely in the core network, then centralized control is simplified, but sensing accuracy and reliability deteriorate
Solution Approach 1:
The SMC (Sensing Management Component) acts as an intermediary between the core network and RAN sensing functions. It receives sensing requests from the core network, translates them into appropriate RAN-level operations, and coordinates the sensing measurements, thereby simplifying the architecture while maintaining accuracy.
Solution Approach 2:
The sensing management function is segmented into a dedicated SMC component that operates at the RAN level, separating management functions from execution functions. This allows the core network to remain simple while enabling accurate local sensing operations through coordinated RAN execution.
3Loss of time
If sensing functions are integrated at the RAN level, then network latency is reduced, but management complexity increases
Solution Approach 1:
The SMC serves as a dedicated intermediary component at the RAN level that handles all sensing management functions. This specialized component simplifies the overall system by consolidating management tasks, reducing the complexity burden on individual RAN nodes while enabling low-latency local sensing operations.
Data Source
AI summary
Various aspects of the present disclosure provide a sensing management component (SMC), which can be located or other placed within a radio access network (RAN) architecture, such as within an NG-RAN node or user equipment (UE). The SMC, which may communicate with a sensing function of a core network, facilitates or supports new or enhanced sensing requests or triggers, such as requests that originate from RAN nodes and/or UEs and are associated with sensing operations performed by the SMC.