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3 posts categorized "G.hnem"

G.hnem Smart Grid Spec Takes Hold

March 04, 2011 11:03 PM in G.hnem , ITU-T G. 9955 , ITU-T G.9956  | 2 comments  | 0 TrackBack


New standards that will enable cost-effective smart grid applications such as distribution automation, smart meters, smart appliances and advanced recharging systems for electric vehicles have entered the final stage of approval at ITU.

The G.hnem standards (ITU-T Recommendations) address several smart grid applications such as distribution automation, advanced metering infrastructure (AMI), demand side management (DSM), grid-to-home communications, home/building energy management, home automation, vehicle-to-grid and vehicle-to-charging station communications.

In a standard power system, generation, delivery and consumption of electricity all take place at the same time. This makes the control of supply and demand uniquely challenging. The new standards provide the crucial link between electricity and communications networks, enabling utilities to exercise a higher level of monitoring and control of the grid.

Power line Connects the Dots

G.hnem is an ideal platform for smart grid applications because of its support of power lines as a communications medium that is under the direct and complete control of power utilities. Since power line communications (PLC) exploit the existing wired infrastructure, the cost to deploy a communications channel is greatly reduced. In addition, because G.hnem supports popular protocols like Ethernet, IPv4 and IPv6, G.hnem-based smart grid networks can easily be integrated with IP-based networks.

 ITU-T G.9955 & G.9956

The two G.hnem standards ITU-T G.9955 and G.9956 contain the physical layer specification and the data link layer specification, respectively, for narrowband OFDM power line communications transceivers for communications via alternating current and direct current electric power lines over frequencies below 500 kHz.

These ITU-T standards support indoor and outdoor communications over low voltage lines, medium voltage lines, through transformer low-voltage to medium-voltage, and through transformer medium-voltage to low-voltage power lines in both urban and long distance rural communications.

Eight Silicon Vendors Align, Supporting The United Nations ITU-T's Next Generation Wired Network Standard

June 12, 2010 2:06 AM in G.hn , G.hnem  | 1 comments  | 0 TrackBack

When I started this blog, my focus was on the wired home network and the G.hn standard.  I kept thinking of "wired home network," in the literal sense.  You know, in the home - as in the confines of the home, and nowhere else. 


What I did not think about, or even consider, was the possibility of linking the wired home network to an even larger network that feeds my home with the power it needs - the grid.

But now, this all makes sense.  

Linking our family's wired home network to the grid, and doing it with a single, unified standard will open up a whole new marketplace for some very smart, and visionary manufacturers to innovate and create new products that will help transform the way we live and work -- at home. 

Before these products come to market, silicon vendors have to commit to a standard like G.hn.  

Today, that hurdle was crossed with the announcement that eight major silicon vendors around the world announced their support of the International Telecommunication Union’s (ITU-T) G.hn and G.hnem technologies for wired home networking and energy management.  Kawasaki Microelectronics America, Inc. and TangoTec are the newest members of HomeGrid Forum, who are joining leading semiconductor suppliers DS2, Ikanos, Intel, Lantiq, Sigma Designs, and Texas Instruments as backers of today's official approved standard.

These eight companies are showing their support for G.hn because they recognize the advantage and opportunity made available through one truly global standard technology for multimedia networking in the home, and out to the grid.

It will be interesting to watch these select companies as they help deliver next-generation technology that will enable their customers to better service their markets with future-generation products that are efficient, simpler to deploy, and works over all three wires—coax, phone, and power lines.  

Remember, G.hn is worldwide. 

It's global. 

That means scale with potentially billions of devices all connected and working on all physical media, supporting, a range of applications, including high-end multimedia networking implementations. 


The Wired Home Network really gets "wired." TI joins HomeGrid Forum board of directors to bring standardized next-generation networking to the smart grid and beyond

April 27, 2010 2:04 PM in G.hnem  | 0 comments  | 0 TrackBack

Since starting this blog, it's focus has been on the literal translation of the wired home network.  You know, the wires that act as the digital plumbing for millions of homes around the world.

 photo of utility plant in New Jersey by Alan Weinkrantz

While I have touched on opportunities for connecting the wired home to the wired electronic grid, it's now come time in the evolution of the this site to begin covering more about  this subject. 

Part of this editorial direction has to do with yesterday's announcement that Texas Instruments Incorporated (TI) (NYSE: TXN) has joined the HomeGrid Forumboard of directors to contribute to this worldwide standardization effort through the International Telecommunication Union's (ITU-T) G.hn organization. 

The idea is that through implementing a  worldwide standard, developers will be able to bring the intelligence and reliability of networking over power lines to a broad range of energy management applications that will advance the smart grid, including Automatic Meter Infrastructure (AMI), home networking, building automation, electric vehicle communications and distributed renewable energy sources. In doing so, consumers will be able to more closely monitor and control devices to save money and energy.  You can learn more here, by going to www.ti.com/smartmetering-hgf.

I'm looking at the home, the car our evolving mobile world and connecting the dots to the the smart grid.

G.hnem - A Smarter Grid.  Wired to the Home.

Related to this shift, ITU-T recently commissioned G.hnem, a new project within G.hn, intended to address the home networking, electric vehicle communications and grid access aspects of energy management. G.hnem will look to learn from existing Low Frequency Narrowband OFDM (LF NB OFDM) technologies. This growing worldwide collaboration will ensure that field experience is used to optimize the specification for the global smart grid community.

Keep your radar on Emmanuel Sambuis, general manager for TI's metering business.   He sees the confluence of AMI, home networking and electric vehicle communications and how they are critical smart grid applications, and low frequency narrowband PLC is essential to not only enabling the technologies, but also to realizing their full benefits. 

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Latest G.hn Updates – Alan WeinKrantzEverywire is a blog that will talk about G.hn and related wired networking news.

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