OFDMA Resource Block Segmentation for Test Load Generation
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Solution Overview
Problem
There is a lack of standardized rules for generating cell load in OFDMA systems to perform UE performance tests in a realistic manner, which affects the consistency and complexity of testing in both lab and real network environments.
Innovation Solution
The method involves allocating contiguous resource blocks in the frequency domain between test users and virtual users, with specific rules governing the allocation to ensure that test signals are transmitted effectively, reducing complexity and ensuring consistent test performance by separating resources for test and virtual users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all downlink radio resources are transmitted to multiple users simultaneously to create realistic cell load, then the test realism and performance verification accuracy are improved, but the test complexity and resource management difficulty increase
Solution Approach 1:
The patent segments downlink radio resources into distinct resource blocks that can be separately allocated to different user types (test users and virtual users). This segmentation allows the test system to manage resources independently for each user category, reducing overall test complexity while maintaining realistic multi-user conditions. The resource block structure enables granular control over which users receive which resources, making the complex multi-user test environment manageable through systematic division of resources.
2Ease of operation
If contiguous resource blocks are allocated separately to test users and virtual users, then the test management and performance verification are simplified, but the resource utilization efficiency may be reduced
Solution Approach 1:
The patent extracts virtual users from the physical test environment and represents them as virtual user entities that consume downlink resources without requiring actual user equipment. This extraction allows the test system to simulate realistic cell load conditions by allocating resources to virtual users alongside test users, improving resource utilization efficiency. The virtual users are taken out of the physical domain and managed as logical constructs, enabling efficient resource allocation while maintaining ease of test management.
Data Source
AI summary
The present invention relates to a method and apparatus for testing mobile terminals in an OFDMA system, in which all or part of available downlink radio resources in a cell are transmitted. A processing unit in a test apparatus splits a set of contiguous resource blocks into separate contiguous portions. A first contiguous portion of the set of resource blocks is allocated to users of a first type, and a second contiguous portion of the set of resource blocks is allocated to users of a second type. A transmitter in the test apparatus transmits test signals to the users of the first type and the second type using the at least one contiguous set of resource blocks.