Resource Determination for Interference Reduction in Heterogeneous Networks
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Solution Overview
Problem
The existing methods for sharing wireless spectrum resources between systems of different standards suffer from co-channel interference, for which there is no effective solution in prior art.
Innovation Solution
A resource determining method and apparatus that acquire relationship information of interference between cells of different standards, using this information to determine time-frequency resource allocation for each cell, thereby reducing co-channel interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless spectrum resource sharing is implemented between systems of different standards, then utilization of wireless spectrum resource is improved, but co-channel interference between systems occurs
Solution Approach 1:
The patent segments the time-frequency resources into different regions (first time-frequency resource region and second time-frequency resource region) and assigns them to different systems (first system and second system) based on interference relationships. This segmentation allows each system to operate in dedicated resource regions, thereby reducing co-channel interference while maintaining high spectrum utilization.
Solution Approach 2:
The patent applies local quality by determining interference relationships specifically for different time-frequency resource regions and allocating resources accordingly. Instead of uniform resource allocation, the system tailors the resource allocation to the local interference characteristics of each region, allowing high-utilization allocation in low-interference regions while avoiding interference-prone regions.
2Productivity
If time-frequency resource allocation is performed without interference information, then allocation simplicity is maintained, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent performs preliminary action by pre-determining the interference relationship between different systems in different time-frequency resource regions before actual resource allocation. The network device obtains interference relationship information and uses it to guide subsequent resource allocation decisions, thereby improving allocation efficiency without adding significant complexity to the real-time allocation process.
Solution Approach 2:
The patent introduces an intermediary element - the interference relationship information - that mediates between the resource allocation需求和 the interference constraints. This intermediary information allows the allocation process to be optimized based on interference characteristics without requiring complex real-time interference calculation and resolution during allocation.
Data Source
AI summary
The present application discloses a resource determining method and apparatus, which relates to the communications field and can reduce co-channel interference between systems of different standards that share a wireless spectrum resource. The method includes: acquiring relationship information of interference imposed on a first cell by a second cell, where the relationship information of interference is used to indicate interference imposed on the first cell by the second cell in a time-frequency domain, and the second cell and the first cell have different standards; and determining time-frequency resource information of the second cell according to the relationship information of interference, where the time-frequency resource information of the second cell is used for the second cell to perform time-frequency resource allocation.