ISAC Sensing Node Operation Across Idle and Connected Modes
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Solution Overview
Problem
The challenge of designing sensing service continuity in integrated sensing and communications (ISAC) systems, particularly in varying operation modes, is not adequately addressed, leading to inefficiencies in power consumption and complex resource management.
Innovation Solution
Proposed schemes for sensing operation in ISAC systems allow sensing nodes to perform operations in idle/inactive modes, with results reported in connected mode or via small data transmission, and utilize DL/UL sensing signals to assist communication procedures, enabling flexible and efficient resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensing operations are performed only in connected mode, then sensing accuracy and resource management are improved, but power consumption increases and system flexibility decreases
Solution Approach 1:
The patent enables sensing operations to be performed dynamically in different operation modes (idle, inactive, connected) rather than being restricted to a single mode. The sensing node can transition between modes based on sensing task requirements, allowing the system to adapt power consumption levels to actual sensing needs while maintaining sensing accuracy through appropriate mode selection and configuration.
2Device complexity
If sensing operations are restricted to connected mode, then resource management is improved, but system flexibility and operational efficiency deteriorate
Solution Approach 1:
The patent segments sensing operations into different operation modes (idle, inactive, connected), each with appropriate resource management strategies. This segmentation allows the system to apply simplified resource management in idle/inactive modes for basic sensing tasks while reserving connected mode for complex sensing operations, thereby reducing overall system complexity while enhancing flexibility.
Solution Approach 2:
The patent makes the sensing node universal by enabling it to perform sensing operations across multiple operation modes (idle, inactive, connected). This multi-functionality allows the same sensing node to adapt to different operational requirements without requiring separate dedicated sensing platforms, thereby improving system flexibility while maintaining manageable resource allocation through mode-specific configurations.
3Use of energy by moving object
If sensing operations are performed in idle/inactive modes, then power consumption is reduced, but sensing service continuity and reliability may deteriorate
Solution Approach 1:
The patent implements preliminary configuration of sensing parameters, thresholds, and task requirements before the sensing node transitions to idle or inactive modes. This preliminary action ensures that when the node wakes up or becomes active again, it can immediately resume sensing operations with pre-configured parameters, maintaining service continuity while benefiting from power savings during low-activity periods.
Solution Approach 2:
The patent implements feedback mechanisms where the sensing node monitors its operational state, sensing task requirements, and power conditions, then dynamically adjusts its operation mode accordingly. This feedback loop ensures that the node transitions to idle/inactive modes only when appropriate, maintaining sensing service continuity while optimizing power consumption based on actual system needs and sensing priorities.
Data Source
AI summary
Various solutions for sensing operation in integrated sensing and communications (ISAC) system are described. An apparatus, operating as a sensing node, may transmit a capability report to a sensing function (SF). The capability report indicates that the apparatus supports a sensing operation. The apparatus may receive a sensing task configuration from the SF. Then, the apparatus may perform the sensing operation based on the sensing task configuration. The sensing operation may involve receiving a downlink (DL) sensing signal according to the sensing task configuration, and/or transmitting an uplink (UL) sensing signal according to the sensing task configuration.