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Products & Applications IEEE 8023 can come to be the new standard for in-vehicle optical multi-gigabit communications

| Editor: Florian Richert

Infotainment, ADAS or autonomous driving: Buses in vehicles must provide ever-higher data rates and become safer at the same time. The industry intends to launch the prototypes of an improved 10GBASE-SR standard by 2021.

Data transmission of up to 100 GBit/s in the vehicle: The industry is working on the standardization of the optical IEEE 802.3 automotive multi-gigabit standard.
Data transmission of up to 100 GBit/s in the vehicle: The industry is working on the standardization of the optical IEEE 802.3 automotive multi-gigabit standard.
(Source: KDPOF)

Within the IEEE 802.3ae specification, 10GBASE-SR allows data to be transmitted at 10 GBit/s over multimode fiber at lengths of up to 25 m. The 10GBASE-SR is a new standard in the IEEE 802.3ae family. The increasing number of infotainment systems, ADAS, and autonomous driving significantly increase the requirements for transmission rates within a vehicle. Carlos Pardo, CEO of KDPOF, a provider of Gigabit transceivers via Plastic Optical Fiber (POF), has also recognized this. "100 MBit/s to 1 GBit/s, 2.5; 5 and 10 GBit/s. Some OEMs will go even further to 25 and 50 Gbps in the next few years," says Pardo.

For him, the existing 10GBASE-SR standard is ideally suited to handle future high-volume data transmissions in automobiles. But he sees one problem: it does not meet the strict requirements of the automotive industry. In a team of more than 15 automobile manufacturers such as PSA, Toyota, and Volvo, but also their suppliers (Tier 1) and component suppliers such as KDPOF, they intend to work together to define the needs and technologies for defining a new multi-gigabit standard.

Optical IEEE 802.3 for Multi-Gigabit Automotive

The Group led a Call for Interest (CFI) with IEEE approval to initiate the standardization of an optical IEEE 802.3 automotive multi-gigabit standard with industry support. Under the leadership of Carlos Pardo, the working group started in the summer of 2019 and the prototypes are to be projected by the end of 2021. They will evaluate the development of an IEEE Ethernet standard for the automotive industry for speeds from 2.5 Gbps and up to 50 Gbps.

The current IEEE standard 10GBASE-SR was originally developed to meet the requirements of data centers where temperature, lifetime, price, reliability and mechanical robustness are highly controlled and manageable. In addition to the key characteristics of power consumption and above all costs in the automotive sector, the harsh automotive environment requires a new communication concept.

The aim is to achieve greater robustness so that it automatically adapts to different environmental conditions and fluctuations in the manufacturing process. The technical basis of the new standard should also be scalable to enable even higher data rates such as 25, 50 and 100 GBit/s in the future.

Once the standard has been optimized, the individual parts are brought together and a good balance of complexity and costs can be achieved between all parts such as CMOS IC, VCSEL, PD, ferrules, sleeves, cables, inline connection technology, optics or lenses.

This article was previously published in German on next-mobility.news.

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