The evolution of wireless networks for industry: From Wi-Fi 6 to 5G and Wi-Fi 7
The digitalization of industry and the implementation of Industry 4.0 technologies demand reliable and high-performance wireless networks. Wired solutions often limit the flexibility and mobility required for modern manufacturing processes, automated guided vehicles (AGVs), and massive Internet of Things (IoT) deployments.
Previous generations of Wi-Fi, such as Wi-Fi 6 (IEEE 802.11ax) and Wi-Fi 6E, made significant strides in improving efficiency, speed, and coverage. Wi-Fi 6E extended capabilities by adding the 6 GHz band, providing cleaner spectrum and greater throughput.
In parallel, 5G technology has evolved, offering three key use cases: enhanced Mobile Broadband (eMBB), Ultra-Reliable Low-Latency Communication (URLLC), and massive Machine-Type Communication (mMTC). For industry, URLLC is critically important, providing millisecond-level latency and high reliability essential for robot control and safety systems. Private 5G networks, utilizing licensed or shared spectrum, offer dedicated infrastructure with guaranteed Quality of Service (QoS) and enhanced security.
Wi-Fi 7 (IEEE 802.11be), known as Extremely High Throughput (EHT), represents the next leap in Wi-Fi evolution. It is designed to deliver unprecedented performance, reduced latency, and increased efficiency. Wi-Fi 7 can achieve speeds up to 46 Gbps 1. Key innovations include Multi-Link Operation (MLO), which allows simultaneous data transmission across multiple frequency bands (2.4 GHz, 5 GHz, and 6 GHz), reducing latency to less than 1 ms 1 and enhancing reliability. Wi-Fi 7 also uses wider channels up to 320 MHz and 4096-QAM modulation, increasing throughput and data transmission efficiency.
Private 5G: Advantages and challenges for critical industrial systems
Private 5G networks are specialized cellular networks designed to provide secure, reliable, and high-performance wireless connectivity within a defined area. They give enterprises full control over their network infrastructure, data, security, and traffic priorities.
Advantages of Private 5G:
- Dedicated spectrum and reliability: Private 5G can operate in dedicated licensed spectrum, guaranteeing interference protection and predictable performance, which is the “gold standard” for industrial applications. This ensures a more stable connection, better QoS, and robust data protection, critical for industrial automation and logistics tracking.
- Low and deterministic latency: Private 5G provides consistently low and, more importantly, deterministic latency 2. This predictability is vital for precise robotic systems and safety applications.
- Mobility support: 5G mobile networks are designed for seamless handover between base stations, which is crucial for mobile devices like AGV/AMRs (autonomous mobile robots) and drones moving across large areas 3.
- High device density: Private 5G is capable of supporting a massive number of connected IoT devices, enabling communication between thousands of sensors, robots, and systems simultaneously.
- Security: Private 5G utilizes SIM-based authentication, end-to-end encryption, and network slicing, ensuring a high level of security 4.
Challenges of Private 5G:
- High deployment cost (CAPEX): Private 5G networks require significant investment in infrastructure, spectrum licensing, and ongoing management. The cost of a single 5G base station can range from $100,000 to $200,000 5.
- Complexity of integration and specialized expertise: Deploying and integrating Private 5G can be more complex, requiring specialized knowledge and experience.
- Regulatory aspects in Ukraine: Access to licensed spectrum for private networks in Ukraine is still in the formative stages. Full-scale 5G deployment in Ukraine is only possible after the war, although pilot projects are already underway.
Wi-Fi 7 for industry: An economical alternative with new capabilities
Wi-Fi 7 (IEEE 802.11be) is a significant step forward for wireless networks, offering enhancements that make it an attractive option for many industrial applications, especially where budget and ease of deployment are key factors.
Key technologies and advantages of Wi-Fi 7:
- Multi-Link Operation (MLO): Allows devices to use multiple frequency bands (2.4 GHz, 5 GHz, 6 GHz) simultaneously for data transmission. This reduces latency to less than 1 ms 1 and provides greater reliability.
- 320 MHz channels and 4096-QAM: Wi-Fi 7 doubles the maximum channel width to 320 MHz and increases modulation to 4096-QAM, significantly boosting throughput and data transmission efficiency, allowing speeds up to 46 Gbps 1. This is ideal for high-definition video streaming, machine vision systems, and edge computing.
- Improved multi-user support: Upgrades to MU-MIMO and OFDMA allow Wi-Fi 7 to manage traffic more efficiently, supporting up to 16 spatial streams (compared to 8 in Wi-Fi 6) and more precise subchannel allocation. This enables stable connections for thousands of devices simultaneously.
- Reduced latency and determinism: Thanks to MLO and more efficient handling of simultaneous access requests, Wi-Fi 7 provides more predictable performance, which is important for real-time control systems and synchronized robot movements.
- Cost-effectiveness and integration: Wi-Fi 7 generally has lower equipment costs and simpler integration with existing IT infrastructure, making it a more accessible solution for many enterprises.
Limitations of Wi-Fi 7:
- Use of unlicensed spectrum: Wi-Fi 7 operates in unlicensed spectrum (2.4 GHz, 5 GHz, 6 GHz), which can lead to interference issues from neighboring networks, Bluetooth devices, and radar systems. This can affect QoS predictability.
- Mobility limitations: While Wi-Fi 7 improves performance, it may still have limitations regarding seamless mobility (handover) for critical applications across large areas compared to Private 5G.
- Shorter coverage range: Wi-Fi typically has a shorter coverage range and signal penetration compared to cellular technologies, which may require more access points to cover large industrial facilities.
Ukrainian context: Regulation and prospects for private networks
For Ukrainian enterprises considering Private 5G or Wi-Fi 7 deployment, understanding the regulatory landscape is critically important. Ukrainian legislation in the field of electronic communications, particularly the Law of Ukraine “On Electronic Communications,” is harmonized with the European Electronic Communications Code.
Regarding 5G, pilot projects are underway in Ukraine. However, full-scale 5G deployment for commercial use, including access to licensed spectrum for private networks, has been postponed until the end of martial law. The National Commission for State Regulation of Electronic Communications, Radiofrequency Spectrum, and Postal Services (NCEC), together with the Ukrainian State Center of Radio Frequencies, is conducting research on 5G compatibility with military equipment and its potential impact on military operations. There are also initiatives to create secure private 4G/5G networks for the needs of the Armed Forces of Ukraine, which involves spectrum allocation in the 700+ MHz range.
For Wi-Fi 7, which operates in unlicensed spectrum (including the 6 GHz band), regulatory hurdles are fewer. However, enterprises still need to comply with established norms regarding transmission power and frequency usage.
Softline IT helps plan and implement corporate network solutions: from auditing the current state to an agreed-upon change plan.
Selection criteria: Private 5G or Wi-Fi 7 for your enterprise?
The choice between Private 5G and Wi-Fi 7 for industrial and corporate environments is not straightforward and depends on specific operational requirements, budget, and strategic goals. Often, a hybrid model is optimal, where Private 5G is used for critical Operational Technology (OT) and mobile applications, while Wi-Fi 7 is used for IT systems, user devices, and less critical IoT.
| Criterion | Private 5G | Wi-Fi 7 |
|---|---|---|
| Spectrum access | Licensed / Shared (guaranteed, interference protected) | Unlicensed (potential interference) |
| Coverage range and signal penetration | Higher, better penetration (fewer base stations for large areas) | Lower, poorer penetration (more access points needed) |
| Mobility support (seamless handover) | Excellent (designed for mobile scenarios, seamless handover) | Good, but with potential limitations for critical applications in large areas |
| Latency and determinism | Extremely low and deterministic (critical for real-time control) | Very low, improved determinism due to MLO (suitable for many industrial applications) |
| Device density | High (support for thousands of IoT devices) | Very high (up to 2000+ devices simultaneously) |
| Security architecture | High (SIM-based, end-to-end encryption, network slicing) | Good (WPA3-Enterprise, but vulnerability to RF interference) |
| Deployment and integration complexity | Higher (requires specialized knowledge, significant CAPEX) | Lower (simpler integration with existing IT infrastructure, lower CAPEX) |
| Total cost of ownership (CAPEX/OPEX) | Higher initial cost, but potentially lower TCO for large areas due to coverage efficiency | Lower initial cost, but potentially higher OPEX due to interference management and more access points |
| Integration with IT/OT systems | Possible, but may require specialized gateways and solutions | Simpler integration with existing IT systems |
| Suitability for critical industrial applications | Ideal for AGV/AMR, remote robot control, video analytics, massive IoT, where high reliability, low deterministic latency, and wide coverage are required | Excellent for machine vision systems, high-speed data transfer, IoT sensors, AGV/AMR in less critical scenarios or confined spaces, where throughput and cost-effectiveness are important |
Pros and cons of Private 5G
- Pros: Guaranteed reliability, deterministic low latency, seamless mobility, high security, dedicated spectrum.
- Cons: High deployment cost, integration complexity, regulatory restrictions in Ukraine.
Pros and cons of Wi-Fi 7
- Pros: Lower cost, simple integration, high throughput, improved latency.
- Cons: Potential interference in unlicensed spectrum, mobility limitations for critical applications, shorter coverage range.
Practical step: To make an informed decision, a detailed audit of your enterprise’s current and future needs is essential. Evaluate the requirements for latency, throughput, mobility, device density, and coverage for each critical application. Consider a pilot project for both technologies in your environment to obtain real-world data on performance and cost.
Softline IT helps teams plan and implement corporate network, from an assessment of the current environment to an agreed change plan.
