Channel Measurement Reporting for Multi-Occasion Unlicensed Access
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Solution Overview
Problem
Existing wireless communication systems face challenges in ensuring reliable transmissions of synchronization signals, system information, and paging information in the unlicensed spectrum due to unpredictable LBT failures, which cause delays and difficulties in channel access, and the current measurement frameworks are inadequate for accounting for interference across multiple channels.
Innovation Solution
Configuring multiple transmission occasions and measurement resources across different bandwidth parts and channels, allowing UEs to access the network reliably and enabling improved measurement frameworks to account for varying interference levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single transmission occasion is used for synchronization signals and system information, then channel access is simpler, but transmission reliability deteriorates due to unpredictable LBT failures
Solution Approach 1:
The patent segments the transmission of synchronization signals and system information into multiple transmission occasions across different bandwidth parts and channels. This segmentation allows the system to attempt transmission multiple times through diverse resources, significantly improving reliability by avoiding single-point failures due to LBT failures or interference.
Solution Approach 2:
The patent introduces measurement of interference levels across multiple channels and bandwidth parts as an additional dimension to traditional single-channel measurement frameworks. This multi-dimensional measurement approach enables the system to account for varying interference conditions across different resources, leading to more robust transmission decisions.
2Reliability
If multiple transmission occasions are configured across different bandwidth parts and channels, then transmission reliability is improved, but channel access complexity increases
Solution Approach 1:
The patent implements preliminary measurement of interference levels across multiple channels and bandwidth parts before actual transmission occurs. By performing these measurements in advance and storing the results, the system can make informed transmission decisions without adding real-time processing complexity during the actual transmission occasions.
Solution Approach 2:
The patent establishes a feedback mechanism where measurement results from multiple channels and bandwidth parts are fed back to determine optimal transmission occasions. This feedback loop allows the system to adapt transmission strategies based on actual interference conditions, improving reliability while managing operational complexity through data-driven decision-making.
3Measurement precision
If existing measurement framework is used, then device complexity is lower, but measurement precision deteriorates due to inability to account for interference across multiple channels
Solution Approach 1:
The patent extends the measurement framework to serve multiple functions simultaneously: measuring interference levels, evaluating channel conditions, and determining optimal transmission resources. This multi-functional approach increases measurement precision by considering diverse factors across multiple channels while managing complexity through integrated processing.
Solution Approach 2:
The patent measures and stores interference level information as data copies across multiple channels and bandwidth parts. These copied measurement results can then be referenced and compared during transmission decisions, enabling precise interference accounting without requiring continuous complex processing, thus improving measurement precision while controlling device complexity.
Data Source
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AI summary
A method of wireless communication includes transmitting, from a communication node, a message to a mobile device including information about a first transmission occasion. The information about the first transmission occasion indicates information about one or more additional transmission occasions. The method also includes performing, by the communication node, a subsequent transmission using either the first transmission occasion or the one of the one or more additional transmission occasions.