Dynamic Radio Transmission Control for Interference-Sensitive Nodes
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Solution Overview
Problem
Conventional techniques for managing interference in contention-based radio resources, such as those used in unlicensed spectrum, are inefficient in protecting interference-sensitive nodes, leading to suboptimal user throughput due to inadequate adaptation of transmission schemes and energy thresholds.
Innovation Solution
A method for network nodes to monitor and control radio transmissions on contention-based resources, identifying interference-sensitive nodes and adjusting transmission strategies based on their requirements, including refraining from transmissions during their activity and adjusting energy thresholds, to minimize interference and enhance user throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional LBT techniques with fixed energy thresholds are used, then the transmission control is simple, but interference-sensitive nodes cannot receive adequate protection leading to suboptimal user throughput
Solution Approach 1:
The patent implements dynamic transmission control by identifying access nodes as interference-sensitive or interference-tolerant based on their protocol type and operational characteristics. The system dynamically adjusts transmission behavior - applying stricter LBT rules to interference-sensitive nodes while allowing more permissive transmission for interference-tolerant nodes, thereby optimizing user throughput without requiring a completely complex control system
Solution Approach 2:
The patent applies different transmission control strategies to different access nodes based on their individual characteristics. Instead of uniform treatment, the system identifies specific nodes as interference-sensitive (e.g., those using protocols more vulnerable to interference) and applies enhanced protection only to those nodes, while other nodes follow standard LBT procedures
2Reliability
If stricter interference protection is applied to all nodes, then interference-sensitive nodes are well protected, but overall transmission efficiency decreases due to unnecessary restrictions on interference-tolerant nodes
Solution Approach 1:
The patent implements differentiated interference protection by classifying access nodes into interference-sensitive and interference-tolerant categories. Stricter protection mechanisms (such as extended LBT procedures) are applied only to interference-sensitive nodes, while interference-tolerant nodes enjoy more permissive transmission rights, thus maintaining high transmission efficiency overall while providing targeted protection where needed
Solution Approach 2:
The patent segments the access node population into distinct groups based on their interference sensitivity characteristics. This segmentation allows the system to apply appropriate transmission control policies to each segment independently, preventing over-protection of all nodes while ensuring adequate protection for vulnerable nodes
3Measurement precision
If energy threshold for detecting radio activity is lowered, then interference-sensitive nodes can detect ongoing transmissions more reliably, but more transmissions are blocked reducing user throughput
Solution Approach 1:
The patent dynamically adjusts the energy threshold setting based on the identified characteristics of the transmitting access node. For interference-sensitive nodes, the system uses lower energy thresholds to improve detection accuracy and ensure reliable interference protection. For interference-tolerant nodes, higher thresholds are used to reduce false blocking and maintain transmission efficiency, thus optimizing throughput
Data Source
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AI summary
A technique comprising: monitoring radio transmissions on a contention-based radio resource; and controlling one or more radio transmissions on said contention-based radio resource, at least partly based on information about when one or more first access nodes identified as interference-sensitive nodes, requiring more interference protection than one or more second access nodes, are using said contention-based radio resource.