Virtual Physical Layer for Wireless Simulation
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Solution Overview
Problem
Current methods for simulating wireless user equipment (UE) and radio access networks (RAN) in testing environments lack efficiency in replicating real-world RF communications and geographical conditions, leading to unrealistic simulations and resource wastage.
Innovation Solution
The simulation of UEs and RANs using containerized and virtualized components, with virtual physical layers, that mimic Layer 2 to Layer 7 functionality, allowing for accurate routing and broadcasting of RF signals based on simulated geographical locations and RF channel conditions, thereby enhancing the realism and efficiency of testing scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional simulation methods are used for wireless UE and RAN, then the simulation can be implemented, but the efficiency is low and resource wastage occurs due to unrealistic simulations
Solution Approach 1:
The patent creates virtual copies of physical network components (virtual UEs, virtual RANs, virtual gNBs) that replicate the behavior and messaging of real wireless devices and network infrastructure. These virtual instances run in containerized environments, allowing multiple simulations to occur simultaneously without requiring physical hardware for each test scenario, thereby improving efficiency and reducing resource consumption.
Solution Approach 2:
The simulation system is divided into separate containerized components that can be independently deployed, configured, and managed. Each virtual UE, virtual RAN, and virtual gNB operates as an isolated container, allowing parallel execution of multiple simulation scenarios and enabling efficient resource allocation without interference between test cases.
2Reliability
If comprehensive RF communications simulation is implemented, then realism is improved, but device complexity increases
Solution Approach 1:
The patent introduces a virtual physical layer (vPHY) as an intermediary component that bridges the gap between higher-layer protocol simulations and actual physical RF communications. The vPHY master component coordinates messaging between virtual UEs and virtual gNBs, handling the complexity of RF simulation details while presenting a simplified interface to upper layers, thus maintaining realism without proportionally increasing overall system complexity.
Solution Approach 2:
The patent replaces complex physical RF hardware and antenna systems with virtualized software-based implementations. Instead of requiring actual radio frequency equipment for each simulation, the system uses virtual components that replicate RF messaging patterns and protocol behavior through software, significantly reducing physical complexity while maintaining simulation fidelity.
3Reliability
If broadcasting messages to all UEs is performed, then complete coverage is achieved, but resource efficiency decreases due to unnecessary transmissions
Solution Approach 1:
The virtual gNB components perform preliminary actions by maintaining knowledge of virtual UE locations and coverage areas before broadcasting messages. The system pre-determines which virtual UEs fall within the coverage area of each virtual gNB, allowing targeted message delivery rather than blanket broadcasting to all UEs, thus improving resource efficiency while ensuring complete coverage of relevant devices.
4Measurement precision
If virtual physical layers are implemented for accurate RF simulation, then measurement precision improves, but device complexity increases
Solution Approach 1:
The virtual physical layer components are designed to serve multiple functions simultaneously: they simulate RF channel conditions, manage virtual antenna behavior, coordinate messaging between virtual UEs and gNBs, and support various wireless protocols. This multi-functionality reduces the need for separate specialized components, thereby improving measurement precision without proportionally increasing system complexity.
Data Source
AI summary
A system described herein may provide a technique for the simulation of User Equipment (“UEs”) and/or radio access network (“RANs”) over packet-based networks. Virtual UEs (“vUEs”) and virtual RANs (“vRANs”) may each include a virtual physical layer (“vPHY”) component that simulates the physical ingress and egress of radio frequency (“RF”) traffic to and/or from the vUE, and the vRAN may include a vPHY component that simulates the physical ingress and egress of RF traffic to and/or from the vRAN. Geographical locations of the vUEs and coverage areas of the vRANs may be further simulated, in order to properly route traffic between respective vUEs and vRANs.