OFDMA UE Performance Test Resource Segmentation
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Solution Overview
Problem
Current methods lack standardized rules for generating cell load in OFDMA systems during UE performance tests, leading to unrealistic and complex scenarios that can result in inconsistent test results and increased complexity for UEs.
Innovation Solution
The method involves splitting available downlink radio resources into contiguous unities in the frequency domain, allocating specific resources to both the UE under test and virtual users, thereby simplifying load generation and maintaining test consistency by separating decoding responsibilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all downlink radio resources are used for transmission to multiple users including virtual users, then test realism is improved, but device complexity increases
Solution Approach 1:
The patent segments downlink radio resources into distinct groups: resource blocks for the UE under test and resource blocks for virtual users. This segmentation allows the test UE to process only its allocated resources while virtual user resources remain decoded by the test equipment, thereby maintaining test realism without increasing the test UE's decoding complexity.
2Reliability
If resources are allocated to virtual users to generate cell load, then test consistency is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements a universal resource allocation framework where the base station and test equipment handle resource management for both real UEs and virtual users. This multi-functional approach allows standardized procedures to generate cell load consistently across different test scenarios, improving test consistency while maintaining ease of operation through automated resource management.
3Measurement precision
If standardized rules for resource allocation are implemented, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent establishes predetermined rules for allocating resource blocks between UEs under test and virtual users. These allocation rules are defined in advance based on test requirements, allowing precise performance measurement while simplifying the actual resource allocation process during testing. The base station and test equipment follow these pre-defined patterns, ensuring measurement precision without requiring complex real-time allocation decisions.
Data Source
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AI summary
The present invention relates to a method for performing UE performance test in an OFDMA system, in which all or part of available downlink radio resources in a cell are transmitted, comprising the step of splitting 302, 402, 502 said resources used for transmission into contiguous unities 101, 102, 103, 201, 202, 203 in the frequency domain such that one or more of said unities consists of resources allocated to one or more UE under test 603; and at least one of said unities consists of resources allocated to virtual users 604. The invention also relates to an arrangement in a network node capable of performing said method.