在 2013年消費(fèi)性電子展(CES)上,各種家庭網(wǎng)絡(luò)技術(shù)紛紛發(fā)表其最新進(jìn)展,其中無(wú)線網(wǎng)絡(luò)(Wi-Fi)技術(shù)因?yàn)?GHz與60GHz的加盟,氣勢(shì)明顯仍凌駕所有對(duì)手。在有線網(wǎng)絡(luò)技術(shù)方面,博通(Broadcom)發(fā)表首款符合800Mbps 速率 MoCA 標(biāo)準(zhǔn)的單芯片,該MoCA技術(shù)已經(jīng)獲得DirecTv、Echostar、Comcast、Cox與Verizon等廠商的機(jī)上盒產(chǎn)品采用。
博通的競(jìng)爭(zhēng)對(duì)手Marvell則是在CES上展示多款采用其G.hn標(biāo)準(zhǔn)芯片的產(chǎn)品;G.hn 是可支持同軸電纜、電話線、電力線與光纖的一種家庭網(wǎng)絡(luò)技術(shù)標(biāo)準(zhǔn),包括Cambridge Industries Group、Comtrend、Teleconnect與 Woxter等廠商,在轉(zhuǎn)接器、模塊等產(chǎn)品采用了Marvell的G.hn芯片,傳輸速率最高可達(dá)1Gbps。
家用電力線網(wǎng)路聯(lián)盟(HomePlug Alliance)雖然沒(méi)有發(fā)表新芯片或系統(tǒng)規(guī)格,但表示已經(jīng)有超過(guò)300款產(chǎn)品通過(guò)該聯(lián)盟認(rèn)證,包括符合其HomePlug AV2規(guī)格的Gigabit等級(jí)設(shè)備。HomePlug與Wi-Fi、Zigbee都是Smart Energy Profile 2規(guī)格的一部分,預(yù)計(jì)在2013年也將進(jìn)駐眾多智能電網(wǎng)相關(guān)產(chǎn)品。
市場(chǎng)研究機(jī)構(gòu)IHS iSuppli 估計(jì),HomePlug 產(chǎn)品出貨量在2013年成長(zhǎng)39%,在2012至2016年將的復(fù)合年成長(zhǎng)率可達(dá)31%;包括博通、聯(lián)發(fā)科(MediaTek)、高通創(chuàng)銳訊 (Qualcomm Atheros)以及Sigma Designs等芯片業(yè)者都支持該標(biāo)準(zhǔn)。
而無(wú)線技術(shù)仍然是家庭網(wǎng)絡(luò)方案的寵兒,根據(jù)市場(chǎng)研究機(jī)構(gòu)ABI Research估計(jì),光是2012年,全球Wi-Fi裝置出貨量就高達(dá)15億臺(tái)。博通在CES上也首度發(fā)表了802.11ac機(jī)頂盒方案,這可能意味著該標(biāo)準(zhǔn)已經(jīng)開始被傳統(tǒng)有線視訊供貨商廣泛采用;此外TP-Link也推出802.11ac路由器,最大傳輸速率理論值可達(dá)1.7 Gbps。802.11ac采用5GHz頻段。
高通創(chuàng)銳訊也在CES發(fā)表兩項(xiàng)訊息,一是該公司推出結(jié)合 2.4GHz/5GHz 802.11ac芯片,以及另一家業(yè)者Wilocity的802.11ad芯片之三頻模塊;802.11ad規(guī)格可在60GHz頻段支持?jǐn)?shù)Gbps速率的 數(shù)據(jù)傳輸。此外高通創(chuàng)銳訊也發(fā)表了可協(xié)助消費(fèi)者管理各種家用Wi-Fi裝置的加值軟件,該StramBoost軟件接口可顯示家庭網(wǎng)絡(luò)上各個(gè)裝置,以及它們的實(shí)時(shí)頻寬使用情況。
本文授權(quán)編譯自EE Times,版權(quán)所有,謝絕轉(zhuǎn)載
編譯:Judith Cheng
參考英文原文:Wired, wireless home nets branch out at CES,by Rick Merritt
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Wired, wireless home nets branch out at CES
Rick Merritt
SAN JOSE, Calif. – The many flavors of home networks are all claiming advances in technology and adoption at the Consumer Electronics Show, but Wi-Fi clearly remains in the lead with expansions in 5- and 60-GHz support.
Among the wired options, Broadcom announced its first single-chip implementation of the Multimedia over Coax standard that delivers throughput up to 800 Mbits/second. The MoCA technology is used in set-top boxes from DirecTv, Echostar, Comcast, Cox and Verizon.
Broadcom’s archrival Marvell came to CES with a handful of design wins for G.hn, a competing home net technology that runs over coax, phone, electrical wires and optical cables. Cambridge Industries Group, Comtrend, Teleconnect and Woxter said they will use Marvell’s G.hn chips in adapters, modules and other products that deliver up to 1 Gbit/s.
The HomePlug Alliance shared no specifics of new chips or systems but said more than 300 products are certified for its specifications that include the “gigabit-class” HomePlug AV2. HomePlug along with Wi-Fi and Zigbee is part of the Smart Energy Profile 2 spec expected to emerge in smart grid products in 2013.
Market watcher IHS iSuppli estimates HomePlug product shipments grew 39 percent in 2012 and will see a 31 percent compounded growth rate from 2012 to 2016. Chip designers Broadcom, Mediatek Qualcomm Atheros and Sigma Designs support the standard.
Wi-Fi continues to be the mega-highway inside the home. More than 1.5 billion Wi-Fi devices were sold in 2012 alone, said market watcher ABI Research.
Broadcom also announced initial support for the 802.11ac standard in a set-top box at CES, possibly signaling the start of broader adoption from the traditionally wired video suppliers. Plenty of others jumped on the bandwagon, including TP-Link, that claimed its .11ac router has a theoretical data rate max of 1.7 Gbits/s. The .11ac spec uses the 5-GHz band.
Qualcomm Atheros attempted to move out of the Wi-Fi pack with two CES announcements. It said it now has a tri-band wireless module that combines its 2.4- and 5-GHz .11ac chip with a chip from startup Wilocity that supports the .11ad spec for multiple Gbits/s over the 60-GHz bands.
In addition Qualcomm Atheros rolled out value-added software to help consumers manage multiple devices competing for Wi-Fi links in the home. The StramBoost software provides an interface showing each device and app on a home network as well as its real-time bandwidth use.
責(zé)編:Quentin