The hottest target is Homeplug and WI, the home ba

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Aiming at family backbones, Homeplug and wi

after a slow start, Homeplug power line technology began to show a rapid development momentum. The formulation of new specifications, the involvement of some high-profile manufacturers and the restructuring efforts to maximize the potential of the technology have all promoted the development of this technology

these changes should help the Homeplug power line alliance consolidate the status of this method, make it a supplement to the Wi Fi scheme in the next few years, and obtain development momentum as an enabler and controller of automated home systems and appliances. This will also help it surpass some less well-known competitive technologies of yitaihe and become a powerful competitive solution for the backbone of home networking

Figure 1: high speed transmission rate makes power line network a powerful supplement to Wi Fi technology

Intel, Linksys under Cisco and Motorola recently joined the Homeplug alliance as sponsor members, so that the audio/video and power line broadband (BPL) standards conducive to this technology have been accepted by IEEE, European Telecommunications Standards Association and other standards organizations. In addition, the restructured Homeplug implementer Council will include three vertical working groups, which will govern three specifications: 1.0 + AV for indoor broadband networks; BPL for broadband power line access; And home automation for low bandwidth control applications

member companies will also cooperate in areas such as generic media access control (MAC) chips for AV and BPL. Similar to cableLabs, Homeplug is striving to become the initiator and standard development forum of interoperability field testing

if the industry previously had doubts about Intel's choice of wired home backbone, these doubts have now vanished, because not long ago, the chip giant not only reiterated its support for the power line alliance, but also joined Motorola and other companies to invest $24.5 million in power line chip manufacturer intelon. Intelon's IP is part of the core technology of the second generation Homeplug AV specification, and has been recognized by the Homeplug alliance in early August

after witnessing the disappointing results of the cable and switching to coaxial cable, Intel, a strong supporter of the digital family, turned its attention to the network technology that attracted its interest when the Homeplug alliance was founded in 2000. "We never deny that Homeplug AV is selected for our wired backbone strategy." Matthew TheAll, director of power line promotion at Intel, who was recently appointed chairman of the Homeplug alliance, said

"wireless technology is great. People will use wireless technology in any place without interruption." TheAll said, "but we also believe that there is a need for cable backbone within the family, so that users can transmit HD TV programs of three or four different channels indoors."

compared with 14mbps in version 1.0, the rated throughput of 200 Mbps provided by Homeplug AV specification can be described as a significant improvement. This new specification is specifically designed for multimedia transmission, and can promote Homeplug to surpass the data network devices of version 1.0 and enter a broader field of consumer electronic products (these products need to be able to access the home network)

"Intel's decision to support Homeplug has made the entire computer industry tend to power line technology for wired home networks." Mark Kirstein, founder and President of Minova technology, which focuses on providing strategies for emerging markets, said, "moreover, since the home network was excluded from the computer field in the initial stage, Homeplug has become very important in how to make media content enter the home network, even if it can afford to buy a 3D printer."

although FPGAs that realize Homeplug AV specification have been available since the first quarter of this year, chipsets will not be available until the fourth quarter. The first data networking product is expected to be released at the end of the first quarter of 2006, and consumer electronic devices using power line technology will not appear in the market until the third and fourth quarters of next year

at that time, cable and satellite operators such as Comcast and Echostar (operating dish network) will look at Homeplug AV from a different perspective, and regard it as an alternative to distribute video, voice and data within the family. The throughput of Homeplug 1.0 is only 14 Mbps, which cannot meet the above requirements. However, a few operators are interested in the early AV specification test based on FPGA, which can run on coaxial cable. Operators now want to see real chip implementation testing. However, TheAll pointed out that the Homeplug alliance has not made any commitments at present

throughput comparison

nevertheless, even if it is based on power lines, the next generation Homeplug standard may finally obtain the required power, become a supplement to the IEEE 802.11n (100+ Mbps) standard that has not been approved, and challenge the related technologies proposed by the coaxial cable multimedia Alliance (MoCA). The throughput of the latter reaches 250mbps in theory, and the field test is between 100 and 120 Mbps

"even in the harsh and easily disturbed power line environment, the average actual throughput of Homeplug is between 70 Mbps and 125 Mbps," said Pete Griffin, cooperative technical director of Radio Shack and chairman of the Homeplug implementer forum Council, "In buildings with extremely old power line installations, you may find a sharp drop in throughput, but it will never fall to the level that you cannot carry HDTV, CD audio streams or similar data that meet full quality of service (QoS)."

griffin believes that based on the on-site test of Homeplug alliance, the second generation Homeplug specification will meet the minimum bandwidth requirements of operators. "We expect that with the maturity of technology, Homeplug specification can be improved on this basis. Gold fell 1.5% and silver fell 3.6%," he said

Intel's practice of not limiting home networking technology to WLAN is consistent with the views of many observers on emerging digital home technologies. For example, parks associates, a market research organization, predicts that more than half of the home networks sold in the next two to three years will not use a single technology, but will combine wired backbones, such as Homeplug, MOCA or HPNA, and may also combine Wireless Expansion technologies such as Wi Fi or ultra wideband

homepna 3.0 turns the tide

so don't kick out any scheme, especially for MOCA cable. HomePNA 3.0, the third generation line specification, may also help the line scheme win the design bid. The theoretical throughput of the new specification is 128mbps, 90% of which is reflected in the MAC layer. Some operators have been configuring HPNA 2.0 specifications in a limited number of products, and the related HPNA 3.0 products will be launched soon

"the line is quite well prepared at this point, so it becomes very interesting to pay attention to how it uses HomePNA 3.0 to move forward." Kurt Scherf, vice president of research and development at parks associates, said. But he added that from a global perspective, Homeplug has at least as good a chance as HPNA or Moca, because power sockets are everywhere in the home

moca completed the field test last spring, and plans to carry out product verification at the end of November this year, and approve its completed specifications in the fourth quarter

the main chip supplier of this technology, entrepreneurial communications, is selling chips, suggesting that cable operators have already started relevant work and become the main driving force of this technology

at the same time, entropic believes that cable transport combines these two fiber types in one, and the operator is looking for a bandwidth higher than that provided by Homeplug. "What operators need is 100Mbps network throughput," said Anton monk, the company's vice president of technology, "Some operators may be able to build systems with a throughput of 20 or 50Mbps, but no matter what the number is, the real problem is: can you get this speed when you deploy to a home? Or if you need to spend $200 to provide technical support services once the system fails to work? Operators need some kind of commitment or agreement, that is, 95% or 98% of the homes they provide services have very strong network transmission capacity."

but Scherf of parks associates believes that few telecom companies seem to be able to do this. "They are still puzzled about the performance of various solutions, such as their anti-interference ability, safety performance, cost, and how much additional processing capacity will be required." He pointed out, "they need to sort out and classify all kinds of information about the common faults of friction and wear testing machines and the things they must pay attention to when using them in the next year to the middle of the 18th month, so as to decide which scheme to choose." (end)

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