NR SA Handover Simulation for Multi-UE and Multi-DU Testing
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Solution Overview
Problem
Existing systems fail to emulate multiple types of handovers in a single test case execution for network functional elements, leading to high CPU utilization and memory consumption, and do not accurately replicate real-life handover scenarios.
Innovation Solution
A new radio distributed unit (NRDU) handover simulator that simulates multiple UE groups and DUs in a single deployment, allowing for various handover scenarios with low CPU utilization and memory usage, including intra and inter DU, gNB, and frequency handovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple types of handovers are emulated in a single test case execution, then testing coverage and reliability are improved, but CPU utilization and memory consumption increase
Solution Approach 1:
The system segments the emulation of multiple handover types into separate virtual test environments, allowing each handover type to be tested independently within the same execution framework. This segmentation enables comprehensive testing coverage while optimizing resource utilization by avoiding redundant processing across different handover scenarios.
Solution Approach 2:
The test system is designed with multi-functional capabilities to handle various handover types (intra-DU, inter-DU, inter-gNB, handover with SN change) through a unified architecture. This universal design allows the system to perform multiple testing functions simultaneously with optimized resource allocation, improving testing coverage without proportionally increasing CPU and memory consumption.
2Use of energy by moving object
If existing systems emulate specific handover types, then resource consumption is reduced, but testing coverage and accuracy of real-life scenario replication are limited
Solution Approach 1:
The system dynamically configures test parameters and scenarios based on the selected handover type and real-life conditions. This dynamic adaptability allows the system to maintain low resource consumption by only activating necessary test functions while still providing comprehensive testing coverage through flexible scenario selection and configuration.
Solution Approach 2:
The system employs parameter changes to adapt the testing framework to different handover scenarios. By modifying test parameters such as network configuration, mobility patterns, and traffic models, the system achieves versatile testing coverage across multiple handover types without requiring separate dedicated systems for each scenario, thus maintaining efficient resource utilization.
Data Source
AI summary
Embodiments are directed to a NRDU handover simulator (100) for performing new radio (NR) standalone (SA) handover simulation. The NRDU handover simulator (100) includes UE group simulator (184) configured to generate multiple simulated UE groups and a DU simulator (186) configured to generate multiple simulated DUs and a test controller (182) connected to simulated UE groups and a traffic generator (188). The test controller (182) is configured to receive an input for performing handover for testing a DUT (190) and determine a simulated UE group associated with a simulated DU for performing the handover based on the input. The test controller (182) is configured to cause the traffic generator (188) to generate a traffic profile based on the input for performing the handover of the simulated UE group and perform simulated handover of the UE group associated with the simulated DU periodically, for testing the DUT (190).