FBE Data Transmission via Interference-Aware Cycle Selection
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Solution Overview
Problem
The existing Listen Before Talk (LBT) mechanism for Frame Based Equipment (FBE) in unlicensed frequency bands leads to high processing overhead and unpredictable channel access success rates due to repeated interference detection in each cycle.
Innovation Solution
A method where a second access network device receives transmission status indication information from a first access network device, determining a fixed cycle for data transmission based on the occupied cycle of the first data, and selecting a beam with mutually exclusive interference to avoid overlapping cycles, thereby reducing processing overhead and improving channel access success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CCA detection is performed in each cycle for interference detection, then channel access reliability is improved, but processing overhead increases
Solution Approach 1:
The patent applies preliminary action by having the first access network device determine and share its fixed cycle occupation information with the second access network device in advance. This allows the second device to proactively select non-overlapping cycles without performing repeated CCA detections, thereby reducing processing overhead while maintaining reliable channel access through coordinated scheduling.
2Object-affected harmful factors
If CCA detection is performed in each cycle for interference detection, then interference avoidance is improved, but time consumption increases
Solution Approach 1:
The patent implements preliminary action by having the second access network device determine its fixed cycle for transmitting second data based on the fixed cycle occupied by the first data before actual transmission begins. This advance planning eliminates the need for time-consuming repeated CCA detections during operation, reducing time consumption while ensuring interference avoidance through pre-coordinated cycle selection.
3Measurement precision
If repeated CCA detection is performed for channel access, then interference detection accuracy is improved, but productivity decreases
Solution Approach 1:
The patent introduces an intermediary mechanism where transmission status indication information acts as a mediator between the first and second access network devices. The first device shares its beam occupation and cycle occupation information with the second device, enabling the second device to accurately determine interference-free cycles through information sharing rather than repeated detections, thus improving channel access efficiency while maintaining detection accuracy.
Data Source
AI summary
Aspects of the disclosure can provide a data transmission method implemented by a second access network device that can include receiving transmission status indication information sent by a first access network device. The transmission status indication information includes beam occupation information and cycle occupation information. The method can further include determining a second beam having a mutually exclusive interference relationship with the first beam, determining, when the second access network device needs to perform transmission of second data with a second terminal by using the second beam, a fixed cycle occupied by the second data based on the fixed cycle occupied by the first data, and performing transmission of the second data with the second terminal in the fixed cycle occupied by the second data.