name: VNG
full_form: Virtual Noise Generator
context: Several test cases require one or several NR cells to be subject to noise interference at a well-defined level. To achieve this, a Virtual Noise Generator (VNG) is modelled, located in the SS and controlled by TTCN. A VNG instance has a one-to-one relation with an NR cell instance and therefore operates on the same frequency as the operating frequency of the associated NR cell. Default configuration of VNG models AWGN transmission across the whole carrier bandwidth and in every time slot. The test model allows varying the power level of the AWGN referred to as a CellNocLevel and measured in dBm/SCS. The NR cell shall be configured before the associated VNG instance is configured. A VNG instance is first configured with noise source being âoffâ, and subsequently activated to a specified CellNocLevel. VNG instance deactivation stops the noise generation.
description: The Virtual Noise Generator (VNG) is a modelled entity within the System Simulator (SS) that generates noise interference at a well-defined level to simulate real-world conditions for testing purposes. It operates on the same frequency as the associated NR cell and can be configured to vary the power level of the Additive White Gaussian Noise (AWGN).
explanation: VNG is classified as a Network Function because it is a modelled entity that interacts with other network components, such as NR cells, to simulate real-world conditions. The context highlights its role in generating noise interference and being controlled by TTCN, which justifies its classification as a Network Function.
section_title: 7.1.2.5Noise generator
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biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,O,B-Miscellaneous,I-Miscellaneous,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,B-Miscellaneous,I-Miscellaneous,I-Miscellaneous,I-Miscellaneous,O