Ambient IoT Reader Communication in RRC Inactive State
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Solution Overview
Problem
Existing 3GPP technologies face challenges in supporting battery-less or low-energy storage A-IoT devices by enabling efficient communication in RRC inactive states, as they require complex and power-consuming operations.
Innovation Solution
A user device determines a detection window to detect A-IoT device replies within a reduced time frame, allowing it to participate in A-IoT sessions as a reader even in an inactive state, reducing complexity and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If existing 3GPP technologies are used to support A-IoT devices, then communication functionality is provided, but energy consumption increases and device complexity increases
Solution Approach 1:
The patent segments the communication process by introducing a detection window mechanism that divides the monitoring period into specific time intervals. The apparatus only performs detection operations within these segmented time windows rather than continuously, reducing energy consumption while maintaining communication functionality. This is achieved by configuring detection windows with specific start times and durations, allowing the apparatus to switch between active detection and low-power states.
Solution Approach 2:
The patent implements periodic action by establishing regular detection windows at predetermined intervals. The apparatus activates detection functionality only during these periodic time windows and remains in a low-power state between them. This periodic operation pattern significantly reduces average energy consumption compared to continuous monitoring, while still ensuring timely detection of A-IoT device replies.
2Reliability
If continuous monitoring is performed to detect A-IoT device replies, then detection reliability is improved, but energy consumption increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring detection windows with specific start times, durations, and resource allocations before the actual detection process begins. The network node provides configuration information including detection window parameters in advance, allowing the apparatus to prepare its detection functionality efficiently. This preliminary configuration enables the apparatus to activate detection only when needed, rather than maintaining continuous monitoring, thus reducing energy consumption while preserving detection reliability.
3Adaptability or versatility
If the apparatus participates in A-IoT sessions as a reader in inactive state, then device versatility is improved, but operational complexity increases
Solution Approach 1:
The patent introduces the network node as an intermediary that manages the complexity of participating in A-IoT sessions. The network node provides configuration information, defines detection window parameters, and coordinates the apparatus's participation in sessions while the apparatus remains in inactive state. This intermediary approach allows the apparatus to gain versatility in participating in A-IoT communications without bearing the full operational complexity, as the network node handles much of the coordination and configuration management.
Data Source
AI summary
Embodiments of the disclosure relate to devices, methods, apparatuses and a computer readable storage medium for ambient internet of things (A-IoT) communication for user device in radio resource control (RRC) inactive state. The method comprises: determining, at the user device, a detection window for the apparatus to detect a reply from an A-IoT device in an A-IoT session; and in accordance with a determination that the apparatus not being in a connected state is triggered, by a network node, to participate in the A-IoT session as a reader, detecting the reply from the A-IoT device within the detection window.