Random Access Repetition Control for Reliable Low-Power Wireless Links
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in power consumption, reliability, and latency due to the use of repetitive transmissions without considering factors like received signal strength, leading to suboptimal communication performance.
Innovation Solution
Implementing variable repetition quantities of transmissions based on received signal strength and other conditions, with a maximum limit set by the base station, to enhance power efficiency, reliability, and reduce transmission latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repetitive transmissions are used to increase reliability, then communication reliability is improved, but power consumption increases and latency increases
Solution Approach 1:
The patent implements dynamic adjustment of repetition quantities based on received signal strength. The wireless device determines the number of repetitions to send based on current channel conditions, signal strength measurements, and other factors, rather than using a fixed repetition count. This dynamic approach allows the system to send more repetitions only when necessary for reliability, while reducing repetitions when signal conditions are good, thereby resolving the contradiction between reliability and power consumption.
Solution Approach 2:
The patent changes the parameter of repetition quantity based on signal conditions. The base station configures a maximum repetition quantity, and the wireless device adjusts the actual repetition count within this limit based on received signal strength, channel quality, and other parameters. This parameter adjustment mechanism allows optimization of both reliability and power consumption by matching repetition quantities to actual communication needs.
2Reliability
If repetitive transmissions are used to increase reliability, then communication reliability is improved, but transmission latency increases
Solution Approach 1:
The patent dynamically adjusts the number of repetitions based on real-time signal conditions and quality indicators. When signal strength is high and channel conditions are good, fewer repetitions are sent, reducing latency. When signal conditions deteriorate, the system increases repetitions only to the extent necessary to maintain reliability, avoiding unnecessary time delays. This dynamic adjustment resolves the contradiction between reliability and latency.
Solution Approach 2:
The patent implements parameter changes in repetition quantities based on signal strength, channel quality, and communication requirements. The base station provides configuration information including maximum repetition quantities, and the wireless device adjusts actual transmission parameters based on measured conditions, optimizing the balance between reliability and latency.
3Device complexity
If fixed maximum repetition quantity is configured by base station, then system control is simplified, but power consumption efficiency decreases
Solution Approach 1:
The patent maintains simplified base station control by configuring maximum repetition quantities, while enabling dynamic adjustment at the wireless device based on local signal measurements. This hierarchical approach keeps system control simple at the network side while achieving power efficiency through local adaptive decisions, resolving the contradiction between control simplicity and energy efficiency.
Solution Approach 2:
The wireless device autonomously determines the actual repetition quantity to use, based on received signal strength, channel conditions, and the maximum configuration provided by the base station. This self-service mechanism allows the device to optimize its own power consumption without complex centralized control, achieving energy efficiency while maintaining simple system architecture.
Data Source
AI summary
Wireless communications may be used for repetition of one or more transmissions. At least some wireless devices may use and/or require different quantities of repetitions of one or more transmissions based on one or more factors such as received signal strength and/or other channel condition(s). The quantity of repetitions may be less than or equal to a maximum quantity of repetitions that may be indicated by a base station.