Inter-UE Interference Cancellation via Selective Subframe Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems, particularly in LTE technology, face challenges in effectively canceling interference from other User Equipments (UEs), which affects the performance and efficiency of mobile broadband access and other multi-access technologies.
Innovation Solution
The method involves identifying subframes vulnerable to interference from other UEs by reading network configurations and system information, and then selectively canceling interference in those subframes using energy or signal detection mechanisms, prioritizing interference cancellation for candidate resource blocks based on LTE uplink properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If interference cancellation is performed on all resources, then interference mitigation is maximized, but processing complexity and energy consumption increase
Solution Approach 1:
The patent applies local quality by performing interference cancellation selectively on specific resources (subframes, resource blocks, physical channels) rather than uniformly across all resources. The UE identifies candidate resources based on network configuration and performs cancellation only where interference is detected, optimizing the trade-off between interference mitigation and processing complexity.
Solution Approach 2:
The patent implements partial action by performing interference cancellation on a subset of resources rather than all resources. The UE identifies candidate resources based on network configuration information and performs cancellation only on those specific resources where interference is likely to occur, reducing overall processing complexity while maintaining effective interference mitigation.
2Object-affected harmful factors
If interference cancellation is performed on all resources, then interference mitigation is maximized, but energy consumption increases
Solution Approach 1:
The patent applies local quality by performing interference cancellation selectively on specific resources (subframes, resource blocks, physical channels) rather than uniformly across all resources. The UE identifies candidate resources based on network configuration and performs cancellation only where interference is detected, optimizing the trade-off between interference mitigation and processing complexity.
Solution Approach 2:
The patent implements partial action by performing interference cancellation on a subset of resources rather than all resources. The UE identifies candidate resources based on network configuration information and performs cancellation only on those specific resources where interference is likely to occur, reducing overall processing complexity while maintaining effective interference mitigation.
3Object-affected harmful factors
If all subframes are processed for interference cancellation, then interference mitigation is maximized, but processing time increases
Solution Approach 1:
The patent applies preliminary action by identifying candidate resources for interference cancellation based on network configuration information before actual data reception. The UE uses system information and uplink resource allocation data to pre-determine which subframes and resource blocks are likely to contain interference, enabling faster processing during actual reception by focusing only on identified candidate resources.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Interference cancellation occurs for devices, where the source of the interference is another UE. The victim UE receiver identifies subframes vulnerable to potential interference from other UEs. Candidate resource blocks in the identified vulnerable subframes are listed. Interference is cancelled for edge resource blocks and valid contiguous resource blocks.