Multimedia over Coax Alliance
Multimedia over Coax Alliance (MoCA) is a trade group promoting a specification they have developed that uses coaxial cables to connect consumer electronics and home networking devices in homes. It allows both data communication and the transfer of audio and video streams.
MoCA was established in 2004 to promote the whole home distribution of high definition content over the existing coaxial cabling. MoCA Ethernet bridges can be used to supply network and multimedia connectivity to a TV, computer, game console, laptop, etc. while devices with integrated MoCA support can interface directly without the use of an adapter. Coaxial cable is resistant to interference and outlets are generally found in rooms intended for TV viewing.
The current MoCA specification can support multiple streams of HD video, deliver up to 800 Mbit/s net throughputs and offer consistent throughput via parameterized quality of service (PQoS).[1]
- Can take advantage of existing home coax wiring if available
- As a wired standard, does not compete with wireless networks for spectrum use
- Can provide uplink network connectivity to wireless access points
- PQoS for managed bandwidth
Products integrating MoCA technology are found in the service provider, custom installer and consumer/retail channels.[2] Applications:
- Multiroom Digital Video Recording (DVR)
- Over The Top (OTT) Content
- Gaming
- Internet
- In-home backbone for wireless network extension
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History [edit]
MoCA was established in 2004. The MoCA MAC/PHY v1.0 specification was approved in February 2006. MoCA also completed its first certification wave in February 2006, ensuring interoperability between devices.
As of April 2012[update] the alliance had over 50 members.[3]
Promoters (Board of Directors): Broadcom, Cisco, Comcast, Cox Communications, Echostar, Entropic Communications, Motorola, Verizon.
Contributors: Alcatel-Lucent, Intel, DirectTV, STMicroelectronics, Sigma Designs, Time Warner Cable, TiVo, ViXS Systems.
Associates: Actiontec, ADB, Arris, Astri, CableLabs, Cogeco, D-Link, Funai, Hitron Technologies, Holland Electronics, Huawei, Humax, JDSU, Jebsee, LG, Macom, Marvell, MaxLinear, MStar, MultiChoice, NDS, Netgear, NXP, Pace, PPC, Soontai, Spirent, Technicolor, Ubee, WNC, Zinwell, ZTE[3]
The Digital Living Network Alliance approved the MoCA technology specification for incorporation into its guidelines in 2009.[4]
MoCA 1.0 [edit]
The original MoCA 1.0 specification uses RF signals with an operating frequency range of 850 to 1500 MHz.[5]
This version provides MAC rates over 100 Mbps with a 270 Mbps PHY rate. Up to 8 nodes are supported in a network.
MoCA 1.1 [edit]
The MoCA 1.1 specification uses RF signals with an operating frequency range of 500 to 1500 MHz.[6]
On October 23, 2007, Entropic Communications announced the first availability of a MoCA 1.1-enabled chipset, scheduled for release in November 2007. Features of this version of the standard include net data throughput of up to 175 Mbit/s and support for up to 16 devices.[7]
In 2009 the company announced that this chipset was being used by Advanced Digital Broadcast in its ADB-6882CDMX[8] – the industry’s first MOCA 1.1 certified set-top box.[9]
The alliance publishes a list of certified products.[10]
MoCA 2.0 [edit]
On June 15, 2010 MoCA 2.0 was ratified. MoCA 2.0 supports two performance modes, Basic and Enhanced, with 400 Mbit/s and 800 Mbit/s net throughputs (MAC), using 700 Mbit/s and 1.4 Gbit/s PHY rates, respectively. For point-to-point WAN applications, performance can be optimized for two node networks with Basic mode delivering 500 Mbit/s net throughput (MAC) and Enhanced mode providing 1 Gbit/s net throughput. The MoCA 2.0 standard uses RF signals with an operating frequency range of 500 to 1650 MHz.[6]
| Common name | IEEE standard |
|---|---|
| HomePlug | IEEE 1901 |
| Wi-Fi | 802.11a |
| 802.11b | |
| 802.11g | |
| 802.11n | |
| 802.11ac | |
| Common name | ITU-T recommendation |
| HomePNA 2.0 | G.9951–3 |
| HomePNA 3.0 | G.9954 |
| HomePNA 3.1 | G.9954 |
| G.hn/HomeGrid | G.9960–1 |
| G.hn-mimo | G.9963 |
| G.hnta | G.9970 |
| G.cx | G.9972 |
Alternative Communication Systems [edit]
G.hn is an open standard that supports connectivity and interoperability across power, telephone and coaxial cables.
See also [edit]
References [edit]
- ^ [1]. (mocalliance.org, accessed May 25, 2012)
- ^ "MoCA Certified Products". MoCA web site. Retrieved April 20, 2012.
- ^ a b "Our Members". MoCA web site. Retrieved April 12, 2012.
- ^ "DLNA adds new features to 2009 interoperability guidelines". www.about-electronics.eu. January 14, 2009. Retrieved July 27, 2011.
- ^ http://www.mocalliance.org/aboutus/faq.php
- ^ a b http://moca4installers.com/moca_faqs.php
- ^ MoCA 1.1 Chipset Release. (mocalliance.org, accessed October 31, 2007)
- ^ http://www.adbglobal.com/products/cable/cable-americas/adb-6880cdmx
- ^ http://www.itvt.com/story/5896/entropic-powered-adb-6882cdmx-becomes-first-moca-11-certified-set-top-box
- ^ "Certified Products". MoCA web site. Retrieved July 27, 2011.
External links [edit]
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