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Dotdot Over Thread Spec Set to Redefine IoT Networking

Thread Group and Zigbee Alliance come together to enable a new approach for interoperability with the Dotdot 1.0 specification.

 By Sean Michael Kerner | Posted Jan 7, 2019
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Networking for Internet of Things (IoT) devices is about to get whole lot more streamlined, thanks to the Dotdot effort.

While Wi-Fi is common for most types of mobile connectivity, for smaller form factor IoT devices, other approaches include Zigbee, which implements the IEEE 802.15.4 specification. Zigbee has become popular among consumer electronics vendors as a way to help enable home automation and connect devices.

Another approach is the Thread protocol, which was first announced in 2014 as an effort backed by Yale Security, Silicon Labs, Samsung Electronics, Nest Labs, Freescale Semiconductor, Big Ass Fans and ARM. The Thread Group defines Thread as an open, IPv6-based, low power, secure and future-proof mesh networking technology for IoT products.

There had been some contention between Zigbee and Thread, leading to networking challenges as well as interoperability challenges for enterprise and consumers looking to integrate different types of IoT devices across unified management platforms. In 2019, that contention and interoperability challenge is now being solved with the Dotdot effort.

The Thread Group and the Zigbee Alliance have now come together to help enable interoperability between the two IoT network protocol approaches. The Dotdot 1.0 specification enables Zigbee to run over the Thread protocol, melding the best of both approaches and enabling interoperable connectivity across Zigbee and Thread devices. At its core, the basic idea behind Dotdot is to provide an application layer for IoT that enables a common language for devices.

The Dotdot effort was first announced in 2016, and now in 2019 has reached the 1.0 stage alongside a certification effort known as Dotdot over Thread.

"When the Zigbee Alliance announced Dotdot, the industry responded,” Tobin Richardson, president and CEO of the Zigbee Alliance, wrote in a media advisory. "Over the last two years, companies from across the IoT worked together within the Alliance on this effort to take the interoperability standard at the heart of Zigbee and enable it to run over any network."

In a presentation hosted by the Thread Group, Dotdot is positioned as being not just a new standard but a solution that leverages two of the most widely adopted and deployed IoT technologies today, Zigbee and Thread. Having a standard alone, however, isn't enough for deployment at scale, which is where the certification comes into play.

"Certification is critical to ensuring interoperability between wireless devices, but it can add time and complexity for product vendors," said Grant Erickson, president of Thread Group.

Dotdot over Thread

Sean Michael Kerner is a senior editor at EnterpriseNetworkingPlanet and InternetNews.com. Follow him on Twitter @TechJournalist

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