Simulated Interference Generation for LTE System Performance Evaluation
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Solution Overview
Problem
Existing methods for generating simulated interference in LTE systems fail to accurately replicate the interference characteristics of real user equipment, leading to incomplete evaluation of system performance in multi-cell scenarios.
Innovation Solution
A method and apparatus for generating simulated interference by configuring interference characteristic parameters such as transmission mode, resource utilization rate, Rank, PMI, MCS, and polling granularity, allowing for the creation of simulated interference that matches real user equipment interference, enabling more objective system performance evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single single-stream transmission scheme is used to generate simulated interference, then the generation process is simple, but the interference characteristic is inconsistent with real user equipment and evaluation accuracy deteriorates
Solution Approach 1:
The patent applies parameter changes by configuring multiple interference characteristic parameters (transmission mode, Rank, PMI, MCS, resource utilization rate) to transform the simulated interference from a single-stream scheme into a multi-parameter scheme that replicates real user equipment characteristics. This resolves the contradiction by maintaining generation simplicity through parameter configuration while achieving accurate interference simulation that reflects real-world scenarios.
2Measurement precision
If multiple interference user equipments with different characteristics are simulated, then evaluation accuracy is improved, but the complexity of interference generation increases
Solution Approach 1:
The patent applies segmentation by dividing the simulated interference into multiple independent interference user equipments, each configured with specific interference characteristic parameters (transmission mode, Rank, PMI, MCS). This allows different interference types to be simulated separately and combined, improving evaluation accuracy while managing complexity through modular parameter configuration for each interference source.
Solution Approach 2:
The patent applies universality by creating a multi-functional interference generation system that can simulate various interference types (open-loop transmit diversity, closed-loop spatial multiplexing, beam forming) using a unified framework with configurable parameters. This single system performs multiple interference simulation functions, reducing overall system complexity compared to having separate systems for each interference type.
3Reliability
If interference characteristic parameters are configured for each interference source, then interference consistency with real user equipment is improved, but the configuration complexity increases
Solution Approach 1:
The patent applies parameter changes by systematically configuring multiple interference characteristic parameters (transmission mode, Rank, PMI, MCS, resource utilization rate) for each interference source. This parameter-based approach ensures interference consistency with real user equipment while managing configuration complexity through a structured parameter setting framework that can be applied uniformly across different interference sources.
Data Source
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AI summary
Embodiments of the present invention provide a method and an apparatus for generating a simulated interference, which are used to obtain a simulated interference of which an interference characteristic is consistent with an interference characteristic of a real user equipment, thereby more objectively reflecting system performance in different scenarios, enhancing a technical evaluation effect, and improving technical evaluation efficiency. The embodiments of the present invention include: configuring interference characteristic parameters, where the interference characteristic parameters are used to simulate one interference or a type of interference that has a same interference characteristic, and the interference characteristic parameters include a transmission mode, a rank Rank, and a precoding matrix indicator PMI; and generating a simulated interference by using the interference characteristic parameters.