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Computex 2008:WiMAX行不行(01)WiMAX為什麼今年不MAX?

(上稿者按:由於我們Computex展時間都抓得很緊,再加上又是以產品為主,雖然會寫到,但以寫作型態而言,並不是很適合寫WiMAX的東西,因為個人覺得WiMAX的觀察,可能比實際的產品還來得重要。所以個人特別請對WiMAX有一定程度觀察的寫手,來寫較為深度的報導,提供給讀者。我是拗他寫三篇,不過他只有交兩篇。龔兄,這樣太沒意思了,科科,今天把第三篇生出來吧)



繼去年10月火熱登場的WiMAX Forum,結果今年的WiMAX EXPO卻不如去年熱鬧,其實並不意外,畢竟去年WiMAX獲得國際電信組織核可,正式成為3G的一員,不過WiMAX廣義而言與3G並不相似,其他的3G通訊協定都有包含語音的部份,但是WiMAX卻是以數據傳輸為主,唯一的轉捩點在於,由於獲得認可,原本WiMAX一直未定案的頻譜,終於可以與其他3G共享。也由於此緣故,去年WiMAX Forum聲勢大噪,各會員也將壓箱寶拿出來展示。

上圖是體驗巴士,說真的,不是體驗巴士不想玩,而是沒啥好玩的。

[In depth report: Is WiMAX ready for us? (1 of 3)]

WiMAX seems to be an awesome solution to on-the-go connectivity. Since the WiMAX Forum was launched in October last year, we have covered all kinds of products and many possible applications of WiMAX. However, the WiMAX EXPO this year didn't turn out to be as popular as last year. What happened to this rising star? We will try to discuss the past, present and future of WiMAX in a series of three reports. Click on the link to read more.

所以該怎麼說呢,WiMAX能幹麼,其實去年就展的差不多了,本來WiMAX能幹麼,其實說穿了也不過就是可以在80公里(未來目標是120公里)移動間使用的高速無線網路,也就是說,你家2M/256可以做的事情,以後可以一邊開車一邊做,前提是你不要命的話...也因為如此,今年Atticus認為WiMAX公車沒什麼看頭,老實說是可以預期到的,畢竟去年精銳盡出,而且體驗巴士已經是第三年了,重點的體驗項目是WiMAX在移動中的無縫連結,加上WiMAX等於是長距離版本的Wi-Fi,應用能玩什麼,其實也不是這些硬體廠商跟WiMAX Forum能決定的,最終WiMAX要拿來做什麼應用,都是看系統服務商打算幹麼而定。

WiMAX was approved by ITU and became a member of the 3G family. However, in a broader sense, WiMAX is actually different from 3G. All the other 3G protocols include voice transmission, but WiMAX is solely based on data transmission. Nonetheless, the approval by ITU allows WiMAX to share the frequency with other 3G protocols. Therefore, WiMAX becomes the rising star of telecommunication, and the industrial partners of WiMAX Forum have unveiled all kinds of products.

So what exactly can WiMAX do? In simple terms, WiMAX is a long-range wireless network that allows you to stay connected at up to 80 km/hr. What you usually do on your computer at work or at home can now be done in your car (that is, if you have daredevil driving skills). Most of its application was already demonstrated last year, so there is really nothing new to see this year. Also, system providers will determine what to offer on the WiMAX network, and the end-user device will follow, not the other way around. As a result, the WiMAX EXPO is kind of boring this year, unless the Forum comes up with new applications.


如果功耗問題能解決 WiMAX手持上網裝置才有搞頭

我稍微看了一下,今年比較特殊的應用,僅有大眾與保全業者結盟的WiMAX運鈔系統,那個無線提款機就算了,核心的價值在於運鈔車採用WiMAX全程監視錄影,這真的是WiMAX最大的賣點應用,如此一來,即便被搶劫,遠端也還能保有全程的錄影畫面,不至於錄影帶被拿走。此外,WiMAX會對導航圖資業者造成相當大的打擊,尤其Google在美國投標700MHz頻段,原本就是想用在WiMAX,如果WiMAX真的實現,那很抱歉,都會圖資跟本不需花錢買什麼Papago或是TomTom,直接利用網路圖資就可以了,當中程目標的120公里行動傳輸完成,只要不飆車,在高速公路基本上也夠用了。


語音應用是筆者一直不得其解為什麼非得用WiMAX不可的方向


偶然在EXPO看到的標語 公然宣稱Wi-Fi已經過時 囧

其實WiMAX的應用中,對於其基本架構最不利的應用是室內的應用,由於WiMAX採用高頻傳輸,遇到障礙會因為反射而衰竭,一到室內還是Wi-Fi比較實在。不過WiMAX也並非真的那麼差,只不過請記得WiMAX目前的特性是:1.適合戶外、.距離較長、可行動使用。2..不太省電,目前約1W,與Wi-Fi差不多。3.不是萬能,請搭配Wi-Fi以及其他有線網路技術服用才能達到最佳使用效果。

下一篇(如果還有的話),小弟繼續聊聊自己這半年多來對於台灣WiMAX營運商的觀察。

[撰文:龔獨陞]

Let's talk about a new and distinct WiMAX application developed by a security company. They are implementing a wireless video monitoring system to their armored trucks and ATMs to increase the security for transporting cash. Therefore, they won't have to worry about the security tape going missing.

WiMAX will also shake the GPS market, as Google maps will be easily accessible in car and you can say good-bye to Papago or TomTom.

Under the current standard, WiMAX is limited to out-door use, because the signal gets significantly weaker in door. Therefore, you will still need to switch back to Wi-Fi at home to maximize your network connectivity. The portability of WiMAX handheld devices remains limited until their power consumption problem can be solved.

We'll talk about the WiMAX system providers in Taiwan in the next article.

[English translation by Jesse] Note: I try to be as faithful to the original author's words as possible. As you know, it's difficult to translate word by word, so I added some personal touch here and there. If anything doesn't make sense, please let me know, and I'll try to fix it. Thanks!

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