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6月7至9日 | 限時72小時快閃折扣!
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什麼是4G?

下一代移動技術標準4G是智能手機和平板電腦用戶的最新流行語。4G繼承了第三代(3G)標準,並提供超寬帶Internet訪問,這為高清移動電視,視頻會議和雲計算打開了大門。最初的4G候選者包括移動WiMax標準和長期演進(LTE),儘管關於這些系統是否符合官方標準尚存在一些爭論。

國際移動通信高級規範要求4G服務以至少每秒100兆位的峰值速率傳輸數據,以進行高移動性通信(來自汽車和火車),並以每秒1吉比特的速率傳輸低速通信(固定用戶)。 LTE Advanced是符合IMT-Advance的網絡,可提供所需的速度。隨著速度的提高,4G技術提供了大量以性能為中心的改進。 4G網絡使用多輸入多輸出(MIMO)天線來提高通信性能。這種形式的智能天線技術無需增加帶寬即可提高數據吞吐量和鏈路範圍。 4G技術還具有帶有錯誤糾正代碼的自適應鏈接,可減少錯誤。用戶可能無法查明引擎蓋下的某些更改,但是4G可以全面改善移動體驗。

從表面上看,4G技術在性能方面又邁出了一步。用戶將體驗到可與Wi-Fi網絡媲美的瀏覽速度,並且擁有如此多的可用帶寬,他們將能夠利用最先進的平板電腦和智能手機功能,而這些功能會阻塞較少的網絡。較早的網絡並不是過時的,但是4G是當前市場上移動性能的頂峰。無論您是想提高瀏覽速度,提高視頻通話質量還是獲得清晰的移動電視信號,4G都能在任何情況下提供最佳性能。

3g和4g有什麼區別?

4G是第四代的縮寫,是繼3G之後的移動通信技術標準。當3G投放市場時,它提供了更高的速度和更高的帶寬。4G將這些標準提升到一個新的水平,從而提高了移動設備性能的門檻。

IMT-Advanced規範將4G服務的峰值速度要求設置為:對於高移動性通信,每秒至少100兆比特;對於低移動性通信,每秒至少1吉比特。3G標準要求提供商以至少200 kbps的峰值速率傳輸數據。與4G相關的顯著速度提升為更好的通話質量,更快的瀏覽,更清晰的視頻通話甚至高清移動電視打開了大門。

3G網絡提高了個人安全性,用更可靠的KASUMI分組密碼代替了A5 / 1流密碼。4G保留了其前身的安全標準,但具有其他關鍵功能。多輸入多輸出(MIMO)天線可在不增加帶寬的情況下增加數據吞吐量和鏈路範圍。這意味著改進的通信性能和更可靠的覆蓋範圍。4G技術還具有糾錯碼,可最大程度地減少錯誤。4G和3G提供不同級別的性能。兩者對於基本的Web瀏覽和應用程序使用都是可靠的,但是4G在更複雜的功能方面勝過其前身。

我需要4克嗎?

第四代移動通信標準4G提供了更高的速度和先進的性能功能。在4G網絡上,用戶可以訪問高級移動功能,例如視頻通話,移動電視和高帶寬應用程序,而無需擔心可靠性。 4G為全天依靠其設備的平板電腦和智能手機用戶提供高端服務。

IMT-Advanced要求規定4G網絡的峰值速度必須至少達到每秒100兆比特的高移動性通信和每秒1吉比特的低移動性通信。與分配給3G網絡的每秒200千比特標準相比,這是一個巨大的飛躍。隨著速度的提高,4G還提供了前所未有的性能功能。 4G網絡使用多輸入和多輸出(MIMO)天線來增加數據吞吐量和鏈路範圍。鏈接自適應會自動糾正編碼錯誤,以減少錯誤數量。您可能無法確定具體方法,但是4G提升了性能和用戶體驗的門檻。

最終,用戶都將體驗到這些速度和性能標準,但是現在,4G是次要服務的高級替代品。用戶可以在不提高性能的情況下完成智能手機和平板電腦的基本功能,但是4G覆蓋範圍可以處理市場上更複雜的移動功能。當您購買下一台平板電腦或智能手機時,請考慮可以支持此高級網絡的設備的優勢。

哪些Lenovo產品具有4g功能?

聯想提供了一系列支持最新移動通信標準的設備。 ThinkPad Tablet和Convertible包括支持4g的型號,具體取決於您所在地區可用的手機服務。優質,可靠的硬件與最先進的網絡技術相結合,創造了前所未有的用戶體驗。 4G是下一代移動通信標準。 IMT-Advanced標準規定4G網絡在高流量區域應提供至少每秒100兆比特的峰值數據速率,在低流量區域應提供每秒1吉比特的峰值數據速率。這種提高的速度使用戶能夠利用智能手機和平板電腦上的各種功能和應用程序。借助這種先進的移動技術,您可以以閃電般的速度瀏覽Internet,隨時隨地與家人進行視頻聊天或直播電視直播。4G是迄今為止最先進的移動網絡。結合正確的設備,它將帶給您全新的移動體驗。

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