802.3cg 10 Mbit/s Single Twisted Pair Ethernet

March 7, 2019 at 8:00 AM

 

Ethernet technologies are continuing to grow and their use continues to expand across a growing number of industries. With all of this Ethernet expansion, there has been a call to quickly identify and address the progression of standards to support wider use of the IEEE 802.3 Ethernet standard. That need has brought about the development of 802.3cg.

 

The goal of 802.3cg is to deliver 10 Mb/s speeds over single twisted pair Ethernet, up to 1 kilometer. 802.3cg also specifies one or more power distribution channels delivering 13 watts of power over twisted pair link segments, not to exceed 1 kilometer.

 

This single pair Ethernet standard is aimed to provide a comprehensive communication protocol, a shared networking infrastructure, and produce power for the growing sensor technologies that will enhance the effortlessness of Ethernet’s money saving, plug-and-play design. This standard will also focus on gaps in the existing IEEE 802.3 standards and look to fill them, and it will work to build a focused, industry-approved plan for developing proposed standards. Additionally, the IEEE 802.3cg working group will determine what Ethernet standards need to be developed in order to support the wide range of products now depending on Ethernet.

 

Defining Ethernet standard requirements will extend Ethernet’s reach and there are several industries that could see significant growth. These include the automotive industry that is already using Ethernet for vehicle cameras, security systems and diagnostics, and is moving towards driverless technology that is Ethernet dependent as well. Plus, smart city technology that is becoming more popular throughout the world utilizes Ethernet, and that trend towards sustainable, connected living is expected to continue to grow. And, of course, the data centers that we all depend on to keep us connected depend heavily on Ethernet connections. In turn, Ethernet has the opportunity to innovate the data centers with the development of the 802.3cg standard and beyond.

 

The 802.3cg standard’s ability to provide 10 Mb/s speeds over single twisted pair Ethernet is a welcomed progression in the evolution of Ethernet and another sign that Ethernet has no intention of slowing down.

 

It's All About Time: Time-sensitive Networking

February 7, 2019 at 8:00 AM

 

In today’s fast paced world, we’ve all got places to go – and quickly. Thus, the demand for reliable transportation has grown along with urbanization and transit companies’ desire for efficient and cost-effective business. Previously, we’ve discussed how technology is changing transportation and modern day wireless railways. Today, we’re going to take a closer look at another technology changing transportation: time-sensitive networking.

 

Time-sensitive networking (TSN) is an extension and update to the IEEE Ethernet standards 802.1 and 802.3 that are intended to standardize Ethernet technology for control systems. TSN is a groundbreaking technology that offers deterministic, timed messaging over Ethernet for train-to-ground communication. It is centrally managed and ensures delivery with reduced jitter by utilizing time scheduling for real-time applications that require determinism. This technology will allow operations networks to utilize the benefits of traditional Ethernet while also fulfilling the timing and control demands of control and measurement applications.  

 

TSN eliminates the need for multiple networks by leveraging existing Ethernet networks to prioritize transmissions that are critical to safety over non-critical data. This feature provides enhanced interoperability and cost savings by reducing the amount of physical network components needed. Though TSN is not a protocol, but an extension of the Ethernet standard, it benefits from growing improvements in Ethernet security, bandwidth and additional capabilities to hold an advantage over standard and specialty Ethernet protocols.

 

Some of the biggest advantages of TSN include safer rides for both passengers and rail operators by allowing real-time delivery of safety messages. Clearer communication and accurate delivery of information allows for trains to run more efficiently and move more passengers. In addition to faster, safer rides, passengers will have a better trip experience with TSN’s reliable Ethernet network to keep them connected during the ride.

 

In addition to rail transportation networks, there are other applications and industries that could benefit from TSN. These include test cells and distributed monitoring which require sensor readings from multiple locations, all of which need to be linked in time. Hardware in the loop (HIL) could also use TSN since it often needs closely coordinated measurements in addition to distributed closed loop control. Machine control systems also use control networks that need synchronized measurements and actions that are highly time-sensitive. Additionally, auto makers are beginning to integrate Ethernet into vehicles to deliver more bandwidth and quicker response, and media networking can use TSN to transmit audio and video data that requires a stringent timing schedule.

 

As the world of rail and transportation and Ethernet networks continue to evolve, TSN has much to offer to help advance operations and usher in the next age of Ethernet technology.

 

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