Ambient IoT Random Access Initiation for Low-Power Collision Reduction
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing random access procedures for ambient IoT devices with ultra-low power consumption and complexity, leading to potential collisions and increased power consumption due to unnecessary signaling.
Innovation Solution
Ambient IoT devices determine whether to initiate a random access procedure based on specific conditions, such as power levels and timer durations, to optimize power usage and reduce collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ambient IoT devices always initiate random access procedure upon receiving signaling, then access reliability is improved, but power consumption increases and collisions occur
Solution Approach 1:
The patent changes the parameter of random access initiation from always-triggering to conditionally-triggering based on timer status and time duration. The UE checks whether a timer is running or has expired, and whether a time duration threshold is met, before initiating random access. This parameter change resolves the contradiction by maintaining access reliability when needed while reducing power consumption by avoiding unnecessary random access procedures.
2Reliability
If ambient IoT devices always initiate random access procedure upon receiving signaling, then access reliability is improved, but collision probability increases
Solution Approach 1:
The patent changes the initiation parameter from unconditional to conditional based on timer and time duration checks. By introducing conditions (timer running status, time duration threshold), the system maintains reliable access when conditions are met while reducing collision probability by preventing simultaneous random access attempts from multiple devices under certain conditions.
3Use of energy by moving object
If ambient IoT devices reduce random access initiation, then power consumption decreases, but access reliability may worsen
Solution Approach 1:
The patent implements conditional parameter changes based on timer and time duration thresholds. When the timer is not running or has expired, and the time duration threshold is met, random access is triggered ensuring reliability. When the timer is running or time threshold is not met, random access is suppressed to save power. This dynamic parameter adjustment resolves the contradiction adaptively.
Data Source
AI summary
Methods, systems, and apparatuses are provided for initiating random access for ambient Internet of Things (IoT) in a wireless communication system, wherein a method of a User Equipment (UE) comprises receiving a first signaling of or for triggering a first random access procedure, and determining, in response to receiving the first signaling, whether to trigger the first random access procedure or not based on a first condition, wherein the first condition includes at least one of: whether a timer is running or not, and/or whether a first time duration has elapsed or not.