SIST EN ISO 15118-8:2020 PDF

Overview

EN ISO 15118-8:2020 (ISO 15118-8:2020) defines the physical layer and data link layer requirements for wireless High Level Communication (HLC) between Electric Vehicles (EV) and Electric Vehicle Supply Equipment (EVSE). Part of the ISO 15118 series for vehicle-to-grid (V2G) communication, this standard specifies how wireless technologies can be used as an alternative to the wired HLC defined in ISO 15118-3. It applies to both conductive charging (EVSEs compliant with IEC 61851‑1 modes 3 and 4) and Wireless Power Transfer (WPT) installations (IEC 61980 series and vehicles per ISO 19363). EN ISO 15118-8:2020 supersedes the 2019 edition and contains minor revisions (e.g., DFS/TPC usage updates).

Key Topics

• System architecture for wireless HLC between EV and EVSE, including roles and service models.
• WLAN technology requirements as the primary wireless medium (physical and MAC layer expectations).
• Frequency and channel management, including channel scanning, selection, and national regulation considerations (U‑NII bands).
• Dynamic frequency selection (DFS) and transmit power control (TPC) usage and compliance.
• Quality of Service (QoS) to ensure reliable message delivery for charging control and V2G services.
• Association and pairing mechanisms for establishing secure wireless links between EV and EVSE.
• Layer 2 interfaces and interoperability requirements for Ethernet/WLAN bridging at the data link layer.
• Security considerations for protecting session establishment, authentication and data integrity.
• Informative annexes: antenna mounting guidance, interference scanning and auto‑channel selection examples, service-area definitions, and national band regulations.

Applications

• Enabling secure, interoperable wireless communications for EV charging at residential, commercial and public charging sites.
• Supporting V2G features such as demand response, grid stabilization and smart charging where wired HLC is not practical.
• Implementing wireless power transfer (WPT) scenarios where the physical power interface is contactless and wireless communication is necessary.
• Facilitating billing, authentication and energy management interactions between vehicle, charge point operator (CPO) systems, and grid operators.

Who Uses This Standard

• EV and EVSE manufacturers (hardware and firmware teams)
• Charging station integrators and system architects
• Network and cybersecurity engineers for EV infrastructure
• Test laboratories and certification bodies validating wireless HLC compliance
• Regulators and policy makers addressing national spectrum rules

Related Standards

• ISO 15118 series (network and application layer requirements)
• ISO 15118-3 (wired HLC over power cable)
• IEC 61851-1 (conductive charging requirements)
• IEC 61980 (WPT systems)
• ISO 19363 (WPT vehicle requirements)

Keywords: EN ISO 15118-8:2020, ISO 15118-8, vehicle-to-grid, V2G, wireless HLC, EVSE, EV, WLAN, physical layer, data link layer, wireless charging, WPT.