微型基地台 Femtocell
這幾天看到一則新聞，內容是說，藝人錢柏渝小姐因為家中iPhone收不到信號，憤而狀告消基會的新聞；其中有一段提到工程師打算在錢小姐家安裝微型基地台，並且付給他一個月4萬的補助金，錢小姐擔心健康會受損而不願妥協。
當然新聞沒有很明確的指出微型基地台是屬於Pico Base Station，還是在台灣仍在測試階段的Femtocell，前者是用在補足都會需要密集基地台、將傳輸距離縮短的小型化基地台；後者則是電信業者想要用以補足室內電信網路收訊的新興法寶。
而這次想要聊的，就是Femtocell，Femtocell的體積與傳統電信基地台相差很多，外觀看起來不過就是個Wi-Fi AP的尺寸；而這也是它的目的，將功率極度的調低，並且把涵蓋範圍限制在相近Wi-Fi基地台的範圍，也就是200公尺左右，根據實測，其實這類的Femtocell功率與Wi-Fi AP差不多而已。也就表示，如果能長期暴露在Wi-Fi下不生病，那Femtocell也不會有問題才對。
而為何會有Femtocell？除了涵蓋室內以外，主要是多半國家的電信網路所採用的3G網路頻段較高，除北美使用700MHz，多數的頻段都在1800MHz以上，雖然較高的頻段有更大的信號承載量，卻容易受到物質反射造成穿透性不佳，尤其在室內、地下室、高樓等地方，一般的室外基地台都難以深入其中，所以才會有Femtocell的概念產生。
只是多半的消費者對電信基地台還是帶有恐懼的心態，加上過去電信基地台引發居民身體不適以及容易生病的案例層出不窮，也不難想像多數人對於要在家中架設微型基地台有多抗拒。不過看到北美已經開始大量贈送Femtocell，理論上問題應該不大，只要心態上把Femtocell當成另一種Wi-Fi AP，應該就不會那麼害怕了。
Femtocell來了 無線上網免費飆到底
【聯合報╱記者陳俍任／台北報導】聯合新聞網 2010/12/12
Ubiquisys intelligent femtocells at CES 2011
1/27/2011 7:00 PM EST
台灣繼光纖上網普及率，飆升到全球第四後，現在更將邁向處處可無線上網的科技島，除了電信業者透過全台連鎖超商，建置天羅地網式的WiFi熱點外，最快明年四月開放Femtocell走進家庭內，無線上網將更便利。
大同電信工程副總楊明祥指出，過去消費者為了方便，會自行在家購買無線寬頻路由器，透過連接ADSL或光纖，就可在家自由自在無線上網。但未來Femtocell設在家內，雖然也是透過ADSL有線連接，但走的是3G頻率，因此既可以用來上網與下載，還可做為語音通訊用。
目前一台Femtocell的機上盒價格約在新台幣五、六千元上下，中華電信大量採購將可降到每台三千元左右，但國家通訊傳播委員會（ＮＣＣ）簡任技正梁溫馨表示，這種「平價迷你基地台」仍被視為射頻器材，未來引進後必須透過系統業者申請認證才能架設，一般民眾就算可自行購買，也無法自己裝設。
目前在歐美家庭使用已很普遍的Femtocell，被稱為毫微微蜂巢式基地台或家用基地台，Femtocell的特性是可做為高用量傳輸，但可作用的範圍很小，通常只在十公尺以內，所以被用來當成解決室內通訊不良的問題，電磁波很小，電信業者因此不願以基地台稱呼，免得造成用戶恐慌，因此也叫毫微微熱點。
Femtocell是個類似無線存取點（Access Point, AP）的設備，只要將機上盒連接上家裡的ADSL、Cable線或光纖，就可整合2G、3G、定點傳輸的WiFi、甚至未來的4G於一機，就能有效解決室內通訊不良問題。
此外，愈來愈多人使用智慧型手機與平板電腦上網，國內電信業者3G基地台的頻寬愈來愈不足，有時連語音都會塞車，消費者若上網的下載傳輸量很高，只要在家申裝一台Femtocell，就不必手動打開WiFi，還得大老遠跑到有WiFi熱點的地方連線。
中華電信行通副總石木標指出，行動上網需求大量成長，行動寬頻傳輸量將成倍數成長，這也讓業者加速建置定點無線上網的WiFi熱點與Femtocell的腳步，但對消費者來說，都是大利多。
正文femtocell將提供2H10、2011年營收、獲利成長動能 2010/09/23
.2Q10起femtocell貢獻的營收已明顯增加，在北美電信運營商對推動femtocell的態度轉為積極下，預估2010年、2011年femtocell將分別貢獻24.79億元、41.85億元的營收。
營運分析
近期營運概況：
正文為網通廠，產品應用領域包括AP/router、WiFi client、整合型產品(主要包括IP STB、IAD，2010年新增femtocell)、WiMax，2009年營收比重分別為26%、38%、24%、12%。
2Q10合併營收44.59億元，QoQ+8.85%，不過，受到零組件漲價(1Q10零組件廠缺工，所造成的缺料，以及後續的零組件漲價)影響，毛利率下跌至11.28%，稅後淨利1.24億元，QoQ-12.48%%，稅後EPS 0.44元。
femtocell功能有二，其一為提高手機訊號的覆蓋範圍，其二則為分擔電信基地台的負載，尤其，隨著全球smartphone出貨成長，行動上網應用滲透率持續提高，電信基地台的所需負載的流量持續增加，femtocell所能提供的第二項功能將日益彰顯，需求也將隨之水漲船高，目前包括AT&T、softbank等電信operator均已陸續採用。
前述正文femtocell的北美客戶考量手機行動上網所衍生的頻寬需求，近期對推動femtocell的態度轉為積極，預估挹注給正文的femtocell訂單將隨之增加，預估3Q10、4Q10將貢獻7.74億元、12.02億元的營收，2011年更將貢獻41.85億元的營收，YoY+68.80%。
2010年、2011年營收/獲利預估：
在femtocell帶動下，預估2010年合併營收205.06億元，YoY+14.47%，稅後淨利6.64億元，YoY+1.69%，稅後EPS 2.37元。
展望2011年，預估合併營收224.57億元，YoY+9.51%，稅後淨利8.45億元，YoY+27.26%，稅後EPS 3.04元。
資料來源：正文、IBTSIC彙整預估
資料來源：正文、IBTSIC彙整預估
資料來源：CMONEY、IBTSIC
Ubiquisys at CES 2011 – New Directions for Consumer Femtocells
Femtocells are tiny devices that connect to home broadband to provide a premium mobile experience indoors. Millions have already been supplied by mobile operators to customers in the US, Asia and Europe, and deployment numbers are rapidly increasing.
Ubiquisys is showcasing several intelligent femtocells at CES 2011, which can all be seen at the Femto Forum’s FemtoZone – Booth No. 35676.
Ubiquisys intelligent femtocells at CES 2011
First there is the award-winning G3 residential femtocell. This intelligent femtocell can handle 8 simultaneous calls and up to 14.4Mbps data, yet it stands just 8cm tall and consumes only a few watts of power. Unlike other femtocells being supplied today, the G3 constantly monitors and adapts to its radio environment. This intelligent behaviour eliminates interference problems, which ensures a dependable customer experience. SoftBank in Japan currently provides the G3 free of charge to its customers.
Ubiquisys is also previewing a new device from SoftBank Mobile in Japan. This advanced femtocell, built by SerComm, includes integrated Wi-Fi, and features the first OSGi service platform in a femtocell. OSGi is widely used in consumer electronics to provide applications in areas such as automation, entertainment and retail.
Finally, Ubiquisys is showing a new femtocell from Tecom. This femtocell demonstrates just how quickly the top device manufacturers can design and build a ready-to-deploy femtocell using the Ubiquisys femto-engine system.
These developments illustrate a number of trends in residential femtocells:
- Femtocell technology and Wi-Fi are complementary technologies that happily co-exist in the same box
- Femtocells are increasingly an integrated capability in a multi-function device, such as a home gateway, or a snap-on accessory
- The number of femtocell manufacturers is increasing to meet market demand for designed-to-order devices
Are you attending CES 2011? What have been some of your highlights so far? Don’t forget to stop by our booth and say hello.
Qualcomm Now Sampling Industry’s Most Comprehensive Femtocell Chipsets
FSM9xxx-Series Chipsets Offer Unprecedented Performance, Interference Management and More
– June 22, 2010 – Qualcomm Incorporated (NASDAQ: QCOM) today announced that it is sampling its Femtocell Station Modem™ (FSM™) FSM9xxx-series chipsets, delivering unsurpassed performance and ease of deployment. The FSM family of products supports the latest 3GPP and 3GPP2 standards while providing an industry-leading level of integration with an enhanced 1GHz microprocessor core, as well as radio frequency and power management capabilities. The first commercial products based on the FSM9xxx -series chipsets are expected to become available by the end of 2010.
“The steady growth of mobile applications and smartphones are creating an ever increasing demand for more broadband,” said Cristiano Amon, senior vice president of the cellular product group for Qualcomm CDMA Technologies. “Products based on our FSM chipsets can help operators meet this demand using their current networks and improve overall customer satisfaction. We are excited about working with equipment manufacturers to bring the industry’s most compelling femtocell products to market.”
Qualcomm’s FSM platform includes configurable solutions that support the broadband peak data rates of 3GPP HSPA+, as well as CDMA2000® 1X, EV-DO Rev. A and EV-DO Rev. B. FSM9xxx-series chipsets feature Qualcomm’s enhanced 1GHz microprocessor core, also found in the Company’s Snapdragon™ solutions, in addition to encryption and security features. The high performance chipsets and accompanying reference designs provide innovative solutions for advanced network synchronization and location, interference management to preserve macro network integrity, and mobility management to preserve existing subscriber use models without any manual configurations. The chipsets will support both enterprise and residential applications.
Femtocells are cellular access points that use broadband IP-based backhaul (DSL, fiber, cable or wireless) connections to extend the reach of cellular service within a localized area, such as a home or office, which represents more than two-thirds of a typical subscriber’s data consumption.
TCXO helps tune femtocells and base stations
Janine Love1/27/2011 7:00 PM EST
Precision Devices has announced the TS05, a temperature compensated crystal oscillator (TCXO) in a 5mm by 3.2mm by 1.5mm package. Covering the frequency range from 10MHz to 52MHz, the TS05 targets femtocell and base station applications.
Key Features:
At 26MHz, typical phase noise figures are -117dBc/Hz at an offset of 100Hz, -138dBc/Hz at an offset of 1kHz and -152dBc/Hz at an offset of 10kHz.
The oscillator operates from a 3V supply voltage, and draws 2mA current when generating a clipped sinewave output, and 4mA when generating a CMOS squarewave output.
Key Features:
- stability of ±0.2ppm over an operating temperature range of -40°C to +85°C
- stability is even lower at ±0.1ppm operating over a restricted temperature range of -10°C to 70°C
- stability is ±0.05ppm for supply voltage variations up to 5%, and for load variations up to 10%.
- With aging, the maximum change is only ±0.5ppm per year, to ensure reliable long-term performance
At 26MHz, typical phase noise figures are -117dBc/Hz at an offset of 100Hz, -138dBc/Hz at an offset of 1kHz and -152dBc/Hz at an offset of 10kHz.
The oscillator operates from a 3V supply voltage, and draws 2mA current when generating a clipped sinewave output, and 4mA when generating a CMOS squarewave output.
擴大有線電視應用 超小型Femtocell扮要角 | ||||
| 2011/3/10 莊惠雯 | ||||
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