If your EV fleet is missing routes or your chargers keep going offline, the root cause is often the same: weak connectivity and poor data visibility. IoT in transportation helps by keeping vehicles and charging assets connected and by turning telemetry into maintenance, routing, and grid-aware charging decisions.
Why Connectivity And Data Matter More As EVs Scale
Read more: IoT SIM vs. Consumer SIM: Why Industrial Routers Need M2M Data Plans
EV adoption is now widespread. The International Energy Agency reports that global electric car sales exceeded 17 million in 2024, capturing more than 20% of the market[1]; as EVs become increasingly affordable across more markets, their market share is expected to surpass 40% by 2030[2].
Charging networks are also expanding rapidly: more than 1.3 million public charging points were added globally in 2024, an increase of over 30% compared to 2023[3].
At scale, transport connectivity solutions and IoT applications in transportation must cover vehicle telemetry, charger operations, and grid interaction, not just “getting online.” The real KPI is operational continuity: fewer stranded drivers, fewer charger outages, and fewer surprise power constraints at busy sites.
Connectivity Standards That Keep Vehicles, Chargers, And Grids Talking
Interoperability is where IoT solutions for transportation deliver compounding value. Three protocols are especially practical for EV charging programs.
The Open Charge Alliance describes OCPP as a uniform method of communication between charge points and central systems, enabling any central system to connect with any charge point regardless of vendor[4].
The same organization describes OSCP as a way to communicate physical net capacity from a distribution system operator (or site owner) to the back-office of the charge spot operator, including a 24-hour prediction of available local capacity[5].
For vehicle-to-charger interaction, CharIN explains that “Plug & Charge” enables automated communication and billing between the EV and charging station without external identification, and that the necessary interfaces are defined in the ISO 15118 standard family[6].
| Layer | What Must Connect | What Data/Control Flows | Example Standards |
| Charger↔Backend | Station and central platform | Status, faults, metering, transactions, config | OCPP |
| Grid↔Charging Ops | Capacity provider and operator | Capacity forecasts, load constraints, schedules | OSCP |
| EV ↔ Charger | Vehicle comms and charger comms | Automated session initiation and billing | ISO 15118 (via Plug & Charge) |
Edge Computing Helps When Latency And Resiliency Matter
Connectivity is not only “can it connect?” It is also “can it respond fast enough?” Edge computing moves core network and cloud capabilities closer to customer devices, reducing the physical distance for communication and lowering latency.
ETSI (European Telecommunications Standards Institute) positions Multi-access Edge Computing (MEC) for use cases such as V2X and IoT, which align with connected transportation and charging hubs.
In EV programs, edge is commonly used for anomaly detection, near-real-time load control at depots or hubs, and “local continue, later sync” operations.
Data-Driven Operations Improve Uptime, Cost Control, And Battery Health
After connectivity is stable, the next win is decision-quality data: a small set of high-value signals plus automated actions.
1. Predictive Maintenance And Asset Management
Research on data-driven battery health monitoring in fleet management systems describes how degradation prognosis can identify potential failures and trigger preventive maintenance actions.
For charging networks, newer OCPP versions expand device management and smart-charging functions. The Open Charge Alliance lists device management, smart charging, and added security for OCPP 2.0.1, and it lists bidirectional charging blocks and ISO 15118-20 bidirectional support for OCPP 2.1.
2. Smarter Routing And Charging Planning
Research on charging-and-routing optimization shows the value of planning trips with charging constraints and infrastructure availability handled inside the optimization.
Vehicle Grid Integration And V2G Make EVs Part Of The Energy System
EVs increasingly connect to energy planning. The U.S. Department of Energy (DOE) frames Vehicle Grid Integration (VGI) as critical to transportation electrification and grid modernization, spanning impacts on EVs and the grid, grid services, codes and standards, and cybersecurity[7].
The DOE also describes a “portfolio of approaches” for beneficial VGI that helps stakeholders meet growing energy demands amid rising EV deployment.
For charging operators, the “connectivity + data” pathway looks like this: use OSCP-style capacity signals to schedule charging within constraints, and adopt protocol support for bidirectional charging as vehicles and chargers enable it.
Cybersecurity Is Now A Core Requirement For Connected Charging
More connectivity means more risk. Extreme-fast-charging ecosystems rely on multiple interconnected subsystems, which increases exposure to physical and cyber threats.
Translate this into procurement requirements: encrypted communications, strong device identity, secure updates, and continuous monitoring with clear incident processes.
Zhongyi IoT Connectivity Options For EV And Charging Deployments
IoT in transportation supports EVs by delivering reliable connectivity and actionable data, improving uptime and enabling grid-aware charging. If you are planning a deployment, start with a short connectivity pilot using Zhongyi IoT products, validate performance and integrations, then scale with centralized management.
Zhongyi IoT provides 3 free test SIM cards and a 7–15-day free trial period. Contact us now!
References:
[1] Executive Summary – Global EV Outlook 2025. Available at: https://www.iea.org/reports/global-ev-outlook-2025/executive-summary (Accessed: 31 March 2026）
[2] More than 1 in 4 cars sold worldwide this year is set to be electric as EV sales continue to grow. Available at: https://www.iea.org/news/more-than-1-in-4-cars-sold-worldwide-this-year-is-set-to-be-electric-as-ev-sales-continue-to-grow (Accessed: 31 March 2026）
[3] Electric Vehicle Charging – Global EV Outlook 2025. Available at: https://www.iea.org/reports/global-ev-outlook-2025/electric-vehicle-charging (Accessed: 31 March 2026）
[4] Open charge point protocol. Available at: https://openchargealliance.org/protocols/open-charge-point-protocol/ (Accessed: 31 March 2026）
[5] Open smart charging protocol. Available at: https://openchargealliance.org/protocols/open-smart-charging-protocol/ (Accessed: 31 March 2026）
[6] Plug & Charge at CharIN: Standardized and interoperable, Plug & Charge services for secure EV charging. Available at: https://www.charin.global/technology/plug-charge/ (Accessed: 31 March 2026）
[7] Vehicle Grid Integration Assessment Report. Available at: https://www.energy.gov/cmei/vehicles/articles/vehicle-grid-integration-assessment-report (Accessed: 31 March 2026)
![Why 2G/3G/4G Backward Compatibility Still Matters for IoT in the 5G Era Alt: 2G/3G/4G in the 5G Era In the rush toward 5G and IoT (Internet of Things), it's easy to overlook the older networks that still power millions of devices. In the 5G era, backward compatibility with 2G/3G/4G remains crucial for IoT, primarily to ensure the proper operation of existing devices, provide wider coverage, reduce energy consumption and costs, and support a smooth transition. The Enduring Role of 2G/3G in a 5G World The shift to 5G is accelerating[1,2]. However, backward compatibility is not just about nostalgia; for several key reasons, it remains necessary both now and in the coming years: 1.Protecting the Online Operation of Existing IoT Devices Currently, there are hundreds of millions of IoT devices worldwide (such as smart electricity meters, water meters, gas meters, asset trackers, vehicle T-Boxes, alarm systems, etc.) that only support 2G, 3G, or 4G and lack 5G capabilities. Without backward compatibility or fallback to 2G/3G/4G, once operators shut down these legacy networks, devices will go offline directly, leading to business disruptions and security risks. 2.Coverage and Network Continuity In many rural, remote, or developing regions, 5G coverage is still limited, and even 4G is not fully available, while 2G/3G remains the most reliable wide-area communication method. Multi-mode NB‑IoT, LTE‑M, or Cat‑1/Cat‑4 modules supporting 2G/3G/4G can: Automatically downgrade to 4G, 3G, or 2G where 5G signals are weak Ensure devices such as vehicle trackers, logistics and warehouse monitors, and field environmental sensors “never go offline.” 3.Power Consumption and Battery Life Advantages 2G remains very efficient in low-speed, low-power scenarios. Some sensors or trackers using 2G solutions can operate 5–10 years without battery replacement. In comparison, 4G/5G consumes significantly more power in low-data scenarios. Therefore, retaining backward compatibility with 2G/3G/4G continues to provide the “most energy-efficient” connectivity option for low-power, long-lasting IoT devices. 4.Cost and Upgrade Pace Control The hardware costs and development thresholds for 2G/3G/4G modules and terminals are much lower than those for 5G modules, especially for high-volume, low-unit-price IoT products. With multi-mode and multi-band compatible modules, enterprises can: Gradually replace old devices with new 4G/5G modules over the next few years Instead of a “one-time replacement” when 2G/3G networks are shut down, thus controlling capital expenditure and operational costs 5. Transition Strategy and Network Downgrade Redundancy Backward-compatible multi-mode modules (supporting 2G/3G/4G/5G) provide flexibility for operators and customers: Operators can gradually shut down 2G/3G networks by country or region, first using 4G/5G for new services, while legacy devices continue to operate via downgraded connections; Devices can automatically downgrade to 4G/3G/2G when 5G signals are weak or congested, ensuring critical data is uploaded on time and avoiding the “high bandwidth but unreliable” problem. Practical Migration Paths The solution isn't to halt progress but to migrate strategically. Here’s how the industry is bridging the gap: Migration Path Terminology Core Advantages Use Cases Deployment Status(2026) LTE Cat-1 bis LTE Category 1 bis Simplified low-cost version of LTE 4G networks (bis = secondary optimized version) Leverages existing 4G base stations, moderate speed (10Mbps downlink), global roaming, low-cost modules Medium data volume IoT (e.g., POS terminals, vehicle tracking) Mainstream transition solution, covers all 4G areas LTE-M LTE-MTC (Machine Type Communication) Supports mobility, voice (VoLTE), 1Mbps speed, moderate penetration Mobile devices, voice-enabled IoT Strong coverage in Americas; expanding in Asia/Europe NB-IoT Narrowband IoT (Narrowband Internet of Things, single base station supports massive connections) Ultra-low power, strong penetration (+20dB), static low data rate (20-250kbps) Static sensors (e.g., meters, water meters, environmental monitoring) Leading deployment in Asia/Europe; limited in Americas 5G RedCap 5G Reduced Capability (eRedCap=enhanced version) Upgraded from Cat-1 bis, 150Mbps downlink, low power, massive connections Mid-to-high-end IoT requiring higher performance Commercial rollout starting 2026 in 5G coverage areas 5G NR mMTC 5G New Radio - massive Machine Type Communication 1M connections/km², ultra-low latency, network slicing Industry 4.0, smart cities Mature 5G network regions eSIM SGP.32 GSMA SGP.32 IoT eSIM (embedded SIM) international standard Remote operator switching, no card swaps needed, global roaming All cross-border IoT deployments Mainstream IoT eSIM standard in 2026 Contact Zhongyi IoT for IoT Connectivity Solutions From leveraging LTE Cat-1 bis for stability today to adopting flexible 5G eSIM solutions for tomorrow, businesses must ensure continuity while preparing for long-term evolution. This is why partnering with one of the top IoT connectivity providers is essential. Zhongyi IoT delivers a comprehensive IoT connectivity service designed to support seamless migration, global coverage, and remote management. To discover how the comprehensive IoT connectivity service can future-proof your deployments, visit Zhongyi IoT. References: [1]2G / 3G Network Shutdown Status and Challenges. Available at: https://www.smartviser.com/post/2g-3gnetworkshutdown [2]Technology upgrades and legacy network sunsets on the rise. Available at: https://www.gsma.com/connectivity-for-good/spectrum/technology-upgrades-and-legacy-network-sunsets-on-the-rise/ TDK SEO Title: Why 2G/3G/4G Backward Compatibility Still Matters for IoT in the 5G Era SEO Keywords: 5G and IoT, 2G 3G 4G, eSIM, IoT connectivity providers, IoT connectivity service SEO Description: Discover why maintaining 2G/3G/4G support is essential for IoT devices in the 5G era, and learn about multiple migration paths such as LTE Cat-1 bis, LTE-M, NB-IoT, and eSIM SGP.32. URL: /2g-3g-4g-backward-compatibility-matters-for-iot-5g-era/](https://www.zyiotnet.com/wp-content/uploads/2026/03/2g-3g-4g-in-the-5g-era.png)