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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=5&size=small" /></div> <h1 class="ph">欧盟开放900MHz、1800MHz频率给4G网络 </h1> <p class="xg1"> 时间：2011-4-19 11:31<a class="zz" href="home.php?mod=space&uid=5">作者：tlx</a> 阅读<em id="_viewnum">(1377)</em> 评论: 0</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>欧盟周一发布最新规范，允许所有成员国开放900MHz和1800MHz波段供4G数据通信网络使用，可运行的网络类别同时包括LTE和WiMAX。制定这些规则是为了避免受现有全球定位系统和3G设备的干扰问题，并严令其会员国在今年年底 ...</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content">欧盟周一发布最新规范，允许所有成员国开放900MHz和1800MHz波段供4G数据<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">通信</a>网络使用，可运行的网络类别同时包括LTE和WiMAX。制定这些规则是为了避免受现有全球定位系统和3G设备的干扰问题，并严令其会员国在今年年底实施。<BR><BR>该委员会的决定还特别规定了技术参数，允许在900MHz和1800MHz频率波段上的全球定位系统和3G与基于LTE或WiMXA的4G技术共存。<BR><BR>该决定为这些技术协调原则的采用建立了一套机制，其基础是来自国家无线电频率专家的输入数据。各会员国政府必须在2011年12月31日前在国内实施该决定，以便LTE和WiMAX系统能够使用全球定位系统的频段。在欧盟委员会2009年迈出开放900MHz和1800MHz的第一步后，会员国已经出现了移动运营商间的竞争问题，并根据欧盟的电信规则处理不正当竞争。<BR><BR>2009年，有关方面展开了技术研究，以证明LTE和WiMAX能够平安地与其他已经使用同一宽带的系统共存。这些研究还阐明了相关技术条件，据此，使用900和1800MHz频段的系统可以保证邻近频段的系统（如铁路和航空服务的全球定位系统）不受任何干涉。成员国有义务给予使用相邻频段的系统以适当的保护。</td></tr></table> <!--[diy=diycontentbottom]--><div id="diycontentbottom" class="area"></div><!--[/diy]--> <script src="data/cache/home.js?eOg" type="text/javascript"></script> <div id="click_div"><table cellpadding="0" cellspacing="0" class="atd"> <tr><td> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=click&op=add&clickid=1&idtype=aid&id=1932&hash=db88ae6ff2daabdace726e37902245f3&handlekey=clickhandle" id="click_aid_1932_1" onclick="showWindow(this.id, 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