UE Resource Release Signaling for Interference Reduction
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Solution Overview
Problem
In LTE systems, overlapping time-frequency resources between UEs with different TTI lengths lead to interference, reducing data transmission reliability, as existing solutions only address intra-UE overlaps and not inter-UE overlaps.
Innovation Solution
A resource management method where UEs receive signaling for releasing specific time-frequency resources based on indicated locations, allowing them to dynamically adjust and release allocated resources to minimize overlap and interference, improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible dynamic switching between TTIs of different lengths is implemented, then service requirements for sporadic high-delay-sensitive traffic are met, but inter-UE resource overlap and interference occur
Solution Approach 1:
The base station monitors resource allocation status and sends resource release signaling to UEs when overlap is detected. This feedback mechanism enables the system to adapt to interference conditions dynamically, resolving the contradiction by allowing flexible TTI switching while maintaining reliability through active interference management.
Solution Approach 2:
The base station acts as an intermediary that coordinates resource releases between UEs. When inter-UE overlap is detected, the base station sends release signaling to the appropriate UE, mediating the resource conflict and preventing interference while preserving the flexibility of dynamic TTI switching.
2Reliability
If long TTI is partially released to transmit short TTI data, then intra-UE overlap is resolved, but inter-UE overlap remains undetected and interference persists
Solution Approach 1:
The base station implements feedback by monitoring resource allocation across all UEs and sending release signaling when inter-UE overlap is detected. This extends the reliability improvement from intra-UE to inter-UE scenarios, while the harmful effect of inter-UE interference is eliminated through active detection and coordination.
Solution Approach 2:
The resource release signaling mechanism serves multiple functions: it resolves intra-UE overlap, prevents inter-UE interference, and maintains flexible TTI switching. This multi-functional approach addresses both the reliability improvement and harmful factor reduction simultaneously.
3Measurement precision
If resource release signaling indicates specific resource location information, then precise resource adjustment is enabled, but signaling overhead increases
Solution Approach 1:
The resource release signaling is segmented to include only essential location information (resource block index, subframe number) rather than complete resource descriptions. This segmentation enables precise resource identification while minimizing signaling overhead by transmitting only the critical parameters needed for resource release.
Data Source
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AI summary
Embodiments of the present invention provide a resource management method and a related device. The resource management method includes: receiving, by UE, signaling for releasing resource sent by a base station, where the signaling for releasing resource indicates information of resource location; and determining, based on the information of resource location, a time-frequency resource corresponding to the information of resource location in allocated resources already allocated by a network side to the UE, and then releasing the time-frequency resource. The UE may release some of the allocated resources based on an indication of the base station. According to the embodiments of the present invention, interference caused by resource occupation overlapping can be effectively reduced and data transmission reliability can be improved.