IAB Node Testing via Virtual Donor Simulation
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Solution Overview
Problem
The increasing number of Integrated Access Backhaul (IAB) nodes in modern telecommunications networks requires cost-efficient and simple testing methods to ensure effective deployment and functionality, particularly in ultra-dense networks where traditional testing methods are costly and complex.
Innovation Solution
A method and test system that utilize test equipment to simulate IAB donors and participants, establishing radio frequency connections with IAB nodes to configure and verify link resources, gather reception information, and combine configuration data to ensure correct resource utilization, allowing for efficient testing of IAB nodes under real-world conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional testing methods are used for IAB nodes, then testing accuracy may be maintained, but testing cost and complexity increase significantly
Solution Approach 1:
The patent uses a test equipment that creates virtual representations (copies) of IAB donors and participants through software simulation rather than requiring physical hardware for each network element. This copying approach maintains testing accuracy by preserving the functional behavior of real network elements while significantly reducing the complexity and cost of the physical test setup.
Solution Approach 2:
The test equipment is designed with multi-functionality, serving as both the test controller and the simulated network elements (IAB donor and participant). This universal device can perform multiple roles - managing test scenarios, simulating different network entities, and collecting measurements - thereby reducing overall system complexity while maintaining comprehensive testing capabilities.
2Productivity
If more IAB nodes are deployed in ultra-dense networks, then network capacity increases, but testing cost and complexity increase
Solution Approach 1:
The test equipment creates virtual copies of multiple IAB nodes, donors, and participants in software, allowing the testing of ultra-dense network scenarios without deploying corresponding physical hardware for each node. This enables scalability - as network capacity requirements increase, the test system can simulate additional nodes through software instantiation rather than requiring proportional increases in physical test equipment.
Solution Approach 2:
The test equipment autonomously manages the complexity of testing multiple IAB nodes by automatically configuring test scenarios, coordinating interactions between simulated network elements, and collecting/analyzing measurements without requiring manual intervention for each additional node. This self-service capability allows the system to handle increased network density while keeping testing procedures simple.
3Reliability
If physical test equipment for each IAB node is used, then individual node testing is thorough, but overall testing cost increases
Solution Approach 1:
A single test equipment performs the function of multiple specialized test devices by virtually instantiating different network elements (IAB nodes, donors, participants) and managing their interactions. This universal approach maintains thoroughness by providing dedicated test capabilities for each node while consolidating the physical infrastructure, thereby reducing costs without sacrificing testing completeness.
Solution Approach 2:
The system creates virtual copies of network elements in software rather than requiring physical test equipment for each node. These software-based copies enable thorough testing of individual node behavior and interactions while eliminating the need for expensive duplicate hardware, achieving cost efficiency without compromising testing reliability.
Data Source
AI summary
A method of testing an Integrated Access Backhaul (IAB) node is disclosed, the method including: providing a device under test as well as a test equipment for testing the device under test, wherein the device under test corresponds to an Integrated Access Backhaul (IAB) node to be tested; simulating at least one Integrated Access Backhaul (IAB) donor by the test equipment; simulating a participant by the test equipment, the participant being connected with the device under test; establishing at least one connection between the device under test and the test equipment, wherein a backhaul link is established with the test equipment; configuring link resources for the device under test via configuration information by the test equipment; gathering reception information by the test equipment; and combining the configuration information with the reception information by the test equipment in order to verify correct resource utilization of the device under test. Further, a test system for testing an Integrated Access Backhaul (IAB) node is described.