中国广电700MHz赋能“无网应急通信”：开辟应急救援全新生命通道
<section style="box-sizing: border-box;font-style: normal;font-weight: 400;text-align: justify;font-size: 16px;color: rgb(62, 62, 62);"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;" nodeleaf=""></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row;margin: 0px 0px 10px;box-sizing: border-box;"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgb(241, 250, 255);padding: 26px 12px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;"><p style="text-indent: 2em;margin: 0px 0px 10px;white-space: normal;padding: 0px;box-sizing: border-box;"><span leaf="">面对地震、洪水等极端自然灾害，传统通信网络可能面临瞬间瘫痪、信息传递中断的风险。当基站损毁、电力中断、蜂窝网络全面瘫痪，智能手机往往沦为“孤岛设备”，而此时，正是救援的关键时刻。如何突破传统通信依赖基站的局限，在“无网”环境下实现连接？中国广电以700MHz低频资源为技术底座，推动“无网应急通信”创新发展，为应急救援开辟了一条全新的生命通道。</span></p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;box-sizing: border-box;" nodeleaf=""></section></section><section style="text-align: center;display: flex;flex-flow: row;justify-content: center;margin: 10px 0%;box-sizing: border-box;"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;line-height: 1;align-self: flex-start;box-sizing: border-box;"><section style="display: flex;flex-flow: row;justify-content: center;box-sizing: border-box;"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;line-height: 1;align-self: flex-start;z-index: 1;margin: 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;"><section style="color: rgb(31, 196, 253);padding: 0px 5px;line-height: 1;box-sizing: border-box;"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span leaf="">低频赋能，700MHz构筑“无网应急通信”新模式</span></strong></p></section></section></section></section><section style="margin: -5px 0% 0px;font-size: 0px;box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;transform: matrix(1, 0, -0.2, 1, 0, 0);-webkit-transform: matrix(1, 0, -0.2, 1, 0, 0);-moz-transform: matrix(1, 0, -0.2, 1, 0, 0);-o-transform: matrix(1, 0, -0.2, 1, 0, 0);border-style: none;border-width: 0px;border-color: rgb(62, 62, 62);padding: 0px;background-color: rgba(255, 255, 255, 0);width: 100%;height: auto;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;transform: matrix(1, 0, -0.2, 1, 0, 0);-webkit-transform: matrix(1, 0, -0.2, 1, 0, 0);-moz-transform: matrix(1, 0, -0.2, 1, 0, 0);-o-transform: matrix(1, 0, -0.2, 1, 0, 0);border-style: none;border-width: 0px;border-color: rgb(62, 62, 62);padding: 0px;background-color: rgb(184, 237, 255);width: 100%;height: auto;box-sizing: border-box;"><section style="display: inline-block;width: 100%;height: 8px;vertical-align: top;overflow: hidden;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"></svg></section></section></section></section></section></section></section><section style="text-align: justify;box-sizing: border-box;"><p style="text-indent: 2em;margin: 0px 0px 10px;white-space: normal;padding: 0px;box-sizing: border-box;"><span leaf="">“无网应急通信”，即在没有网络信号的环境下，依靠特定技术实现的紧急通信解决方案。</span></p><p style="text-indent: 2em;margin: 0px 0px 10px;white-space: normal;padding: 0px;box-sizing: border-box;"><span leaf="">中国广电700MHz为“无网应急通信”提供了新的解决方案。11月25日，华为推出了支持无网应急通信功能的新手机Mate80系列和Mate X7，进一步验证了700MHz在应急场景下的现实价值。</span></p><p style="text-indent: 2em;margin: 0px 0px 10px;white-space: normal;padding: 0px;box-sizing: border-box;"><span leaf="">700MHz，被誉为“黄金频段”，作为中国广电运营的核心低频资源，具备信号传播距离远、绕射能力强、穿透性能优等天然优势。基于该频段构建的“无网应急通信”方案，无需依赖原有蜂窝架构，即便在山区、林地、废墟等极端环境中，可穿透多层墙体或混凝土结构，精准触达被困人员，成为绝望中最可靠的“生命信标”。</span></p></section><section style="text-align: center;display: flex;flex-flow: row;justify-content: center;margin: 10px 0%;box-sizing: border-box;"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;line-height: 1;align-self: flex-start;box-sizing: border-box;"><section style="display: flex;flex-flow: row;justify-content: center;box-sizing: border-box;"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;line-height: 1;align-self: flex-start;z-index: 1;margin: 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;"><section style="color: rgb(31, 196, 253);padding: 0px 5px;line-height: 1;box-sizing: border-box;"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span leaf="">平急两用，打造可触达每个人的应急生命线</span></strong></p></section></section></section></section><section style="margin: -5px 0% 0px;font-size: 0px;box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;transform: matrix(1, 0, -0.2, 1, 0, 0);-webkit-transform: matrix(1, 0, -0.2, 1, 0, 0);-moz-transform: matrix(1, 0, -0.2, 1, 0, 0);-o-transform: matrix(1, 0, -0.2, 1, 0, 0);border-style: none;border-width: 0px;border-color: rgb(62, 62, 62);padding: 0px;background-color: rgba(255, 255, 255, 0);width: 100%;height: auto;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;transform: matrix(1, 0, -0.2, 1, 0, 0);-webkit-transform: matrix(1, 0, -0.2, 1, 0, 0);-moz-transform: matrix(1, 0, -0.2, 1, 0, 0);-o-transform: matrix(1, 0, -0.2, 1, 0, 0);border-style: none;border-width: 0px;border-color: rgb(62, 62, 62);padding: 0px;background-color: rgb(184, 237, 255);width: 100%;height: auto;box-sizing: border-box;"><section style="display: inline-block;width: 100%;height: 8px;vertical-align: top;overflow: hidden;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"></svg></section></section></section></section></section></section></section><section style="text-align: justify;box-sizing: border-box;"><p style="text-indent: 2em;margin: 0px 0px 10px;white-space: normal;padding: 0px;box-sizing: border-box;"><span leaf="">基于700MHz频段的“无网应急通信”对于应急通信保障意义重大。当灾区通信完全中断时，救援队伍携带专用终端即可开展搜救工作，手机终端自动识别环境状态，在后台持续搜索救援信号。一旦接入，用户可上报位置信息等并发送信息，指挥中心据此动态掌握灾情分布，实现精准调度。同时，救援队伍可主动发起呼叫，指导群众自救，避免二次伤害，极大提升了搜救效率与生命存活率。</span></p><p style="text-indent: 2em;margin: 0px 0px 10px;white-space: normal;padding: 0px;box-sizing: border-box;"><span leaf="">作为通信网络运营商，中国广电始终秉持“人民至上、生命至上”理念，充分发挥700MHz频段的战略价值，推动“无网应急通信”从技术探索走向大众应用。</span></p><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><span leaf="">未来，中国广电将持续深化700MHz在智慧应急、公共安全、乡村振兴等领域的融合创新，加快建设“平急两用、韧性高效”的现代应急通信体系，为人民群众的生命财产安全筑起一道坚不可摧的“数字长城”。</span></p><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><span leaf=""></span></p><ul class="auto-hide-last-sibling-br list-paddingleft-2" style="list-style-type: none;"><li><h2 class="header-iWP5WJ auto-hide-last-sibling-br" style="overflow-wrap: break-word; outline: none; margin-top: 13.5px; margin-bottom: 0px; padding: 0px; font-size: 18px; -webkit-font-smoothing: antialiased; box-sizing: border-box; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border: 0px solid; line-height: 27px; overflow-anchor: auto; font-family: Inter, 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