Listen-Before-Talk Indication Signaling for High-Frequency Networks
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Solution Overview
Problem
Current wireless networks face challenges in efficiently managing listen-before-talk (LBT) configurations across different frequency ranges and radio-access technologies, particularly in scenarios where LBT is not mandatory, leading to potential inaccuracies in channel quality assessments and network mobility issues.
Innovation Solution
The provision and use of LBT information through various signaling methods, including common and dedicated signaling, to inform user equipment (UE) about the LBT configuration of neighbor cells, allowing for accurate channel assessments and improved network mobility, even in regions where LBT is not mandatory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If LBT procedure is not used in unlicensed spectrum, then device complexity and operation simplicity are improved, but channel quality assessment accuracy and network mobility are deteriorated
Solution Approach 1:
The network device performs preliminary actions by determining LBT configuration information for neighbor cells before the UE needs to assess channel quality. This pre-determination and signaling of LBT configuration allows the UE to accurately assess channel quality without the UE itself needing to perform complex LBT procedures, thus maintaining measurement precision while simplifying UE operation.
2Loss of information
If LBT configuration information is not provided to UE, then signaling overhead is reduced, but network mobility and channel assessment accuracy are deteriorated
Solution Approach 1:
The LBT configuration information signaling mechanism is designed to be universal and multi-functional. The same signaling framework serves multiple purposes: it provides LBT configuration for channel quality assessment, supports network mobility operations, and works across different frequency ranges and radio access technologies. This multi-functionality justifies the signaling overhead by delivering multiple benefits simultaneously.
3Measurement precision
If LBT configuration is determined for each neighbor cell, then channel assessment accuracy is improved, but device complexity and processing time are increased
Solution Approach 1:
The network device acts as an intermediary that performs the complex task of determining LBT configuration information for multiple neighbor cells. Instead of requiring the UE to independently determine LBT configuration for each neighbor cell (which would be complex), the network device performs this determination and signals the results to the UE. This intermediary approach maintains measurement precision while reducing UE processing complexity.
Data Source
AI summary
The present application relates to devices and components including apparatus, systems, and methods for listen-before-talk indications in high-frequency networks.