中英對照 Wimax.doc

WimaxWiMax(Worldwide Interoperability for Microwave Access),即全球微波互聯(lián)接入。WiMAX的另一個名字是802.16。WiMAX是一項新興的寬帶無線接入技術(shù)，能提供面向互聯(lián)網(wǎng)的高速連接，數(shù)據(jù)傳輸距離最遠(yuǎn)可達(dá)50km。WiMAX還具有QoS保障、傳輸速率高、業(yè)務(wù)豐富多樣等優(yōu)點。WiMAX的技術(shù)起點較高，采用了代表未來通信技術(shù)發(fā)展方向的OFDM/OFDMA、AAS、MIMO等先進(jìn)技術(shù)，隨著技術(shù)標(biāo)準(zhǔn)的發(fā)展，WiMAX逐步實現(xiàn)寬帶業(yè)務(wù)的移動化，而3G則實現(xiàn)移動業(yè)務(wù)的寬帶化，兩種網(wǎng)絡(luò)的融合程度會越來越高。簡介WiMAX又稱為80216無線城域網(wǎng)，是又一種為企業(yè)和家庭用戶提供“最后一英里”的寬帶無線連接方案。因在數(shù)據(jù)通信領(lǐng)域的高覆蓋范圍(可以覆蓋2530英里的范圍),以及對3G可能構(gòu)成的威脅，使WiMAX在最近一段時間備受業(yè)界關(guān)注。該技術(shù)以IEEE802.16的系列寬頻無線標(biāo)準(zhǔn)為基礎(chǔ)。一如當(dāng)年對提802.11使用率有功的Wi-Fi聯(lián)盟，WiMAX 也成立了論壇，將提高大眾對寬頻潛力的認(rèn)識，并力促供應(yīng)商解決設(shè)備兼容問題，借此加速WiMAX 技術(shù)的使用率，讓W(xué)iMAX 技術(shù)成為業(yè)界使用IEEE 802.16 系列寬頻無線設(shè)備的標(biāo)準(zhǔn)。雖然WiMAX 無法另辟新的市場目前市面已有多種寬頻無在線網(wǎng)方式，但是有助于統(tǒng)一技術(shù)的規(guī)范，有了標(biāo)準(zhǔn)化的規(guī)范，就可以以量制價，降低成本，提高市場增長率。短期而言2004年，WiMAX 論壇將在年底之前，著手開發(fā)認(rèn)證流程，為最后一步的產(chǎn)品測試預(yù)作準(zhǔn)備。2005年左右，大型供應(yīng)商將推出擁有WiMAX 認(rèn)證的產(chǎn)品，多數(shù)產(chǎn)品的頻率不超過11GHz.長期而言，WiMAX 將進(jìn)步到可以支持最后一哩，回程、私人企業(yè)應(yīng)用。2006/07 年左右，WiMAX 解決方案將內(nèi)建于筆記本電腦，可直接進(jìn)行客戶端發(fā)送，遞送真正的便攜式無線寬頻，不需外接的客戶端設(shè)備(CPE)。WiMAX是一項新興技術(shù)，能夠在比Wi-Fi更廣闊的地域范圍內(nèi)提供“最后一公里”寬帶連接性，由此支持企業(yè)客戶享受T1類服務(wù)以及居民用戶擁有相當(dāng)于線纜/DSL的訪問能力。憑借其在任意地點的16英里覆蓋范圍(取決于多種因素)，WiMAX將可以為高速數(shù)據(jù)應(yīng)用提供更出色的移動性。此外，憑借這種覆蓋范圍和高吞吐率，WiMAX還能夠提供為電信基礎(chǔ)設(shè)施、企業(yè)園區(qū)和Wi-Fi熱點提供回程。工作原理認(rèn)為WiMAX1為采取中最好的一部分access?the蜂窩網(wǎng)絡(luò)，允許方便地連接的任何地方服務(wù)提供者s寬覆蓋區(qū)域和采取最好的一Wi-Fi experiencethe fast速度和熟悉寬帶互聯(lián)網(wǎng)體驗。 然后結(jié)合在一起到一個新無線標(biāo)準(zhǔn)。 能夠獲得WiMAX作為訂購或付費點播as-you-轉(zhuǎn)服務(wù)使寬帶類似于接收移動電話服務(wù)。WiMAX是一種城域網(wǎng)(MAN)技術(shù)。 服務(wù)供應(yīng)商部署一個網(wǎng)絡(luò)的塔，就啟超過許多英里的訪問。覆蓋區(qū)域內(nèi)的任何地方可立即啟用互聯(lián)網(wǎng)連接。和Wi-Fi一樣 WiMAX是一個基于開放標(biāo)準(zhǔn)的技術(shù)，它可以提供消費者希望的設(shè)備和服務(wù),它會在全球經(jīng)濟(jì)范圍內(nèi)創(chuàng)造一個開放的具有競爭優(yōu)勢的市場。主要構(gòu)成1、 輸出單元因此WiMAX傳輸互聯(lián)網(wǎng)在前景，WiMAX網(wǎng)絡(luò)使用的做法是，類似于移動電話。開展某一定地理范圍內(nèi)被分成多個一系列重疊的區(qū)域稱為單元。每一個單元提供覆蓋范圍為用戶在該鄰域。當(dāng)旅行到主要從一個單元到另一個，無線連接是遞送關(guān)閉從一個單元到另一個。2、 主要設(shè)備WiMAX網(wǎng)絡(luò)包括兩個主要組件:一個基站和訂戶設(shè)備。WiMAX基站安裝在一個立式或高樓為廣播此無線信號。訂戶接收信號在WiMAX啟用筆記本電腦,Mobile Internet Device (MID)(或者甚至了WiMAX調(diào)制解調(diào)器。3、 應(yīng)用范圍WiMAX標(biāo)準(zhǔn)支持移動，便攜式和固定服務(wù)選項。這使無線供應(yīng)商提供寬帶互聯(lián)網(wǎng)訪問區(qū)域相對不發(fā)達(dá)通過電話和電纜公司。用于固定WiMAX部署中，服務(wù)提供商提供客戶端設(shè)備(CPE)，作為指向無線“modem”以提供的界面為WiMAX網(wǎng)絡(luò)為特定位置，如家庭、網(wǎng)吧，或辦公室。 WiMAX也以及適合新興市場作為的經(jīng)濟(jì)方法提供高速度互聯(lián)網(wǎng)。4、 技術(shù)WiMAX是一項新興技術(shù)，能夠在比Wi-Fi更廣闊的地域范圍內(nèi)提供“最后一公里”寬帶連接性，由此支持企業(yè)客戶享受T1類服務(wù)以及居民用戶擁有相當(dāng)于線纜/DSL的訪問能力。憑借其在任意地點的16英里覆蓋范圍(取決于多種因素)，WiMAX可以為高速數(shù)據(jù)應(yīng)用提供更出色的移動性。此外，憑借這種覆蓋范圍和高吞吐率，WiMAX還能夠提供為電信基礎(chǔ)設(shè)施、企業(yè)園區(qū)和Wi-Fi熱點提供回程。WiMAX構(gòu)建于高級無線技術(shù)，抵消效果的干擾提供更多數(shù)據(jù)以大范圍。兩個關(guān)鍵高級無線突破結(jié)合入移動WiMAX標(biāo)準(zhǔn)是正交頻分多訪問(OFDMA)和多個輸入/多個輸出(MIMO)智能天線技術(shù)。這兩種技術(shù)有效地放置到更多的數(shù)據(jù)的可用電波以提高吞吐量和/或覆蓋范圍。尤其有利MIMO高干擾環(huán)境中，如中心城市。OFDMA斷裂一個信號轉(zhuǎn)換許多獨立之前將其傳輸碎跨電波以增加光譜效率。 通過多元化的信號這樣,即使某些塊沒使它通過，則信號會重建仍然可以對方是否MIMO使用多個天線的兩端的無線連接(基站和用戶設(shè)備)以啟用數(shù)據(jù)到沿多個獨立路徑。例如,一個1x2配置指設(shè)備帶有1Tx(傳輸)和2Rx(接收)天線;同樣,3x3指3Tx和Rx天線3。1WiMAX連接需要一個WiMAX-啟用設(shè)備和訂閱了WiMAX寬帶服務(wù)。WiMAX連接性可能需要購買額外的軟件或硬件在額外費用?？捎眯訵iMAX可能受限制，需要咨詢自己的載體支持的詳情和網(wǎng)絡(luò)限制。寬帶性能和結(jié)果可能不同由于環(huán)境因素和其它變量。Wimax WiMax (Worldwide Interoperability for Microwave Access),the global microwave Internet access.WiMAX is another name for 802.16.WiMAX is an emerging broadband wireless access technology, can provide for high-speed Internet access, data transmission distances up to 50km. WiMAX also has a QoS guarantee, high transfer rate, the business advantages of rich and varied. WiMAX technology starting point higher, with the development of communication technology represents the future direction of the OFDM / OFDMA, AAS, MIMO and other advanced technology, along with the development of technical standards, WiMAX broadband services, the progressive realization of mobile, the 3G mobile services is achieved broadband, two networks will be increasingly high degree of integration.Introduction WiMAX, also known as 802.16 wireless metropolitan area network, is another way for businesses and home users to provide last mile broadband wireless connectivity solutions.In the field of data communication due to the high coverage (can cover the range of 25 to 30 miles), and the possible threat of 3G, the WiMAX industry has been concerned in the most recent period.The technology to IEEE802.16 series of broadband wireless standards.As mentioned the year of 802.11 Wi-Fi usage meritorious Alliance, WiMAX Forum also set up, will raise public awareness of the potential of broadband, and urged suppliers to solve equipment compatibility issues, so as to accelerate the usage of WiMAX technology to enable WiMAX technology to become the industrys use of IEEE 802.16 series of standards for broadband wireless equipment.While WiMAX can not open up new markets (currently the market has a variety of free online broadband network), but it helps to uniform technical specifications, with the standardization of norms, the amount of system price can be lower costs, increase market growth rate.In the short term (2004), WiMAX Forum will be before the end of the year, started to develop the certification process, as the last step to prepare for product testing.Around 2005, large suppliers will launch a WiMAX-certified products, most products of the frequency of no more than 11GHz. The long term, WiMAX can support the progress to the last mile, backhaul and private enterprise applications.Around 2006/07, WiMAX solutions will be built into laptop computers , can direct the client to send, deliver truly portable wireless broadband devices without an external client (CPE).WiMAX is an emerging technology, Wi-Fi can be more than the broad geographical area to provide last mile broadband connectivity, which supports enterprise customers as well as residents enjoy a T1 type of service the user has the equivalent of cable / DSL access capacity.With its location in any range from 1 to 6 miles (depending on many factors), WiMAX for high-speed data applications will be able to provide better mobility.In addition, with such coverage and high throughput, WiMAX also provides for the telecom infrastructure, enterprise campus and provide backhaul Wi-Fi hotspots.Work That WiMAX1 for taking the best part of the access? The cellular network , allowing easy connection to any local service provider s wide coverage area and take one of the best Wi-Fi experience-the fast pace and are familiar with broadband Internet experience.Access to WiMAX as a subscription or pay-per-as-you-transfer services to broadband like to receive mobile phone service.WiMAX is a metropolitan area network (MAN) technology.Service providers to deploy a network of towers to start over many miles of access.Anywhere within the coverage area can immediately enable the Internet connection.Like Wi-Fi, WiMAX is a technology based on open standards, it can provide equipment and services consumers want, it will within the global economy to create an open competitive market.Main components1.Output unitTherefore, the Internet in the future WiMAX transmission, WiMAX network uses the approach is similar to the mobile phone.Carried out within a certain geographical area is divided into a series of overlapping area is called the unit.Each unit provides coverage for users in the neighborhood.When traveling to a major from one unit to another, turn off the wireless connection is transmitted from one cell to another.2.Major equipment WiMAX network includes two main components: a base station and subscriber equipment.WiMAX base stations installed in a vertical or tower for broadcasting the wireless signal.Enable subscribers to receive the signal in the WiMAX notebook PCs, Mobile Internet Device (MID) (or even a WiMAX modem.3.ApplicationsWiMAX standard to support mobile, portable and fixed service options.This allows wireless providers to provide broadband Internet access to the relatively underdeveloped area by phone and cable companies.Deployments for fixed WiMAX service provider customer premise equipment (CPE),as a point wireless modem to provide the interface for the WiMAX network for a specific location, such as family, cafes, or in the office.WiMAX is also well suited to emerging markets as the economic approach provides high-speed Internet.4.TechnologyWiMAX is an emerging technology, Wi-Fi can be more than the broad geographical area to provide last mile broadband connectivity, which supports enterprise customers as well as residents enjoy a T1 type of service the user has the equivalent of cable / DSL access capacity.With its location in any range from 1 to 6 miles (depending on many factors), WiMAX high-speed data applications for better mobility.In addition, with such coverage and high throughput, WiMAX also provides telecommunications infrastructure, enterprise campus and provide backhaul Wi-Fi hotspots.WiMAX is built on advanced wireless technologies, to offset the interference effects to provide more data to a wide range.Combination of two key breakthroughs into the advanced wireless mobile WiMAX standard is orthogonal frequency division multiple access (OFDMA) and multiple input / multiple output (MIMO) smart antenna technology.Both techniques effectively put more data available to the airwaves to increase throughput and / or coverage.MIMO is particularly advantageous for high interference environments, such as the central city.OFDMA br