G.hn
G.hn, also referred to as "Home standard Grid " is now the common name for the "next generation" of home networking technology. The technical standard developed by the International Telecommunication Union ( ITU) and is sponsored by the Forum and other organizations Industry Association Home Grid.
The standard supports digital networking over power, telephone and cable television cable with data transfer rates up to 1 Gbit / s The Californian company Sigma Designs has introduced the first G.hn -compliant chipset under the name " CG5110 " on October 25, 2010.
G.9955 ( originally called " G.hnem ") is a complementary standard, which specifies a simplified, narrow-band version for smart grids and home automation applications. The specification was completed in December 2011.
Technology
G.hn is a carrier frequency method uses a (gross) signal rate of a total of one gigabit per second. A plurality of partial data streams by means of orthogonal frequency division multiplexing ( OFDM) on a plurality of carriers modulated sent over the medium. The sub-carriers each modulated with quadrature amplitude modulation (QAM ) to 4096 -QAM (12 -bit QAM). There are provided a plurality complexity profiles and possibilities for adaptation to different transmission media. For cables with several strands MIMO techniques are available. About the Protocol Data Unit (PDU ) of G.hn usually Ethernet packets are transmitted. The standard provides for forward error correction, and includes options to encrypt both individual transmission links in the network ( point-to- point encryption ) as well as the total distance between two terminals ( end-to -end encryption ) using the Advanced Encryption Standard (AES).
Media
The idea behind G.hn is that a single device such as a router for digital networking ( especially) can be used in private households, come no matter what cable for the transmission of data on your home network to use. So can be used all the existing cable from the area of electricity, telephone, television or network. Lying in each room power cable particular, offer an inexpensive and easy way, Internet TV and broadband internet throughout the house to be transferred by wire. Such " carrier frequency systems " (Powerline) although there is already for private households, but they do not build on a uniform standard and therefore are not compatible. The association behind G.hn, the "Home Grid Forum ," praises as an advantage of standardization, especially the lower cost in hardware development and simplified installation by private consumers and laity (which of course brings with it lower costs ).
Development and standardization process
The standardization process was completed in June 2010 with the adoption of the third and last Teilbereichts of the standard. The ITU Recommendation G.9960, which was adopted on 9th October 2009, defines the physical layer and the architecture of G.hn wireline standardization initiative The data link layer (Recommendation G.9961 ) was adopted on 11 June 2010. In addition, a coexistence protocol ( G.9972 ) was approved. On the standardization efforts of the ITU over 20 companies participated, including several telecommunications companies, and manufacturers of telecommunications equipment and home networking technology.
Availability of chipsets
The Californian company Sigma Designs, Inc., its subsidiaries Israeli Coppergate sells hardware for TV over IP-based networks ( IPTV), has introduced the first G.hn -compliant chipset under the name " CG5110 " on October 25, 2010. Coppergate expected for 2011 still a " wide availability of devices based on G.hn ". The Company Coppergate sees himself as a leader in the implementation of the G.hn standard to, mainly due to his experience with the network technology HomePlug AV.
The divested business from Infineon LANTIQ based in Neubiberg near Munich has introduced the world's second G.hn -compliant chipset under the name " Lantiq XWAY HNX " on January 3, 2011. A " G.hn powerline networking Evaluation Kit " including complete documentation, Linux software and drivers for other devices Lantiq is available since 31 January 2011.
On 27 September 2011, the U.S. company Marvell Technology Group announced that it had a G.hn -compliant chipset in the program. This chipset bears the names 88LX3142 and 88LX2718. Since at least January 2013, the reference implementation of the Marvell chipset is provided under the name GE DW360F for device manufacturers.
Availability of equipment
On June 5, 2012 gave five modem manufacturer announced that it will manufacture adpater and modem technology based on the G.hn implementation of the company Marvell. It is to the reference design GE DW360F based on the Marvell chip. The units include: The Powerline adapter BiPAC 2094 R2 Billion Electric Co. Ltd. company. from Taipei, the Powerline adapter PG - 9070 and PG - 9170 the company Comtrend of Irvine in California, the G.hn modem ZXHN H505 of the company ZTE Corporation of Shenzhen and the modem DH- ED31GP the company Delta Networks, Inc. of Taipei.
On January 9, 2013, the Company Comtrend of Irvine in California announced that it based on the Sigma chipset now further developed the second generation, which now bears the name " CG5200 ", a powerline adapter for the retail market ( telephone, Internet and television ) offers. The device, at home on a " plug-and- play" that allows an installation is called " Power Grid 9051s ".