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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク List of United States wireless communications service providers ： ウィキペディア英語版 List of United States wireless communications service providers This is a list of United States wireless communications service providers. The Cellular Telecommunications & Internet Association (CTIA), lists approximately (30 facilities-based ) wireless service providers in the United States as members. Competitive Carriers Association (CCA) has over 100 members.〔(【引用サイトリンク】title=About CCA )〕 Besides the facilities-based providers there are 50+ virtual operators that use the top four networks to provide the service. ==Largest U.S. wireless providers== The top 5 wireless telecommunications facilities-based service providers by subscriber count in the United States are: * Verizon Wireless: 137.5 million (Q3 2015)〔(【引用サイトリンク】url=http://www.fiercewireless.com/special-reports/how-verizon-att-t-mobile-sprint-and-more-stacked-q3-2015-top-8-carriers )〕 * AT&T Mobility: 126.4 million (Q3 2015) * T-Mobile US: 61.2 million (Q3 2015)〔(【引用サイトリンク】url=https://newsroom.t-mobile.com/media-kits/q3-2015-earnings.htm )〕 * Sprint Corporation: 58.6 million (Q3 2015)〔(【引用サイトリンク】url=http://s2.q4cdn.com/578722565/files/doc_financials/quarterly/2015/Q2/Fiscal-2Q15-Presentation-Final.pdf )〕 * U.S. Cellular: 4.8 million (Q3 2015)〔(【引用サイトリンク】url=http://investors.uscellular.com/news/news-release-details/2015/US-Cellular-reports-third-quarter-2015-results/default.aspx )〕 The top 5 wireless providers have all standardized on 4G LTE as their wireless communication standard, which has been deployed in most major population centers; however, the LTE bands used by each provider remain largely incompatible. Additionally, AT&T and T-Mobile have standardised on 4G HSPA+ in addition to LTE. All 5 wireless providers also maintain legacy networks; of these, AT&T and T-Mobile use 2G GSM/EDGE and 3G UMTS (mostly converted to 4G HSPA+), while Verizon, Sprint, and U.S. Cellular use cdmaOne/EV-DO/1xRTT. While the top 4 wireless providers operate nationwide wireless networks which cover most of the population in the United States, U.S. Cellular and other smaller carriers provide native network coverage across selected regions of the United States while supplementing nationwide coverage through roaming agreements with other carriers. AT&T has announced definitive plans to shutdown their legacy GSM/EDGE 850MHz and 1900MHz networks by 2017; which will leave T-Mobile as the only nationwide GSM 1900 operator. Even though all operators have adopted LTE, which includes provisioning of service through SIM cards, and AT&T, T-Mobile and even Verizon do sell SIM cards through their retail channels, as of 2015, Sprint remains the only nationwide carrier not to. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of United States wireless communications service providers」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.