{"id":67153,"date":"2026-01-28T11:48:52","date_gmt":"2026-01-28T03:48:52","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/67153.html"},"modified":"2026-01-28T11:48:52","modified_gmt":"2026-01-28T03:48:52","slug":"nb-iot%e6%8a%80%e6%9c%af%e8%af%a6%e8%a7%a3%ef%bc%9a%e4%bb%8e%e5%8e%9f%e7%90%86%e5%88%b0%e5%ba%94%e7%94%a8%e7%9a%84%e7%89%a9%e8%81%94%e7%bd%91%e9%9d%a9%e5%91%bd","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/67153.html","title":{"rendered":"NB-IoT\u6280\u672f\u8be6\u89e3\uff1a\u4ece\u539f\u7406\u5230\u5e94\u7528\u7684\u7269\u8054\u7f51\u9769\u547d"},"content":{"rendered":"

<\/h2>\n

\u7b80\u5355\u6765\u8bf4，NB-IoT\u5c31\u662f\u8ba9\u4ebf\u4e07\u8bbe\u5907\u4ee5\u4f4e\u529f\u8017\u3001\u5e7f\u8986\u76d6\u7684\u65b9\u5f0f\u8fde\u63a5\u5230\u4e92\u8054\u7f51\u7684\u5173\u952e\u6280\u672f\u3002<\/p>\n

\u968f\u7740\u7269\u8054\u7f51\u65f6\u4ee3\u7684\u5230\u6765，\u4f20\u7edf\u7684\u79fb\u52a8\u901a\u4fe1\u6280\u672f\u65e0\u6cd5\u6ee1\u8db3\u6d77\u91cf\u8bbe\u5907\u8fde\u63a5\u5bf9\u4f4e\u529f\u8017\u548c\u5e7f\u8986\u76d6\u7684\u9700\u6c42\u3002\u5728\u6b64\u80cc\u666f\u4e0b，\u7a84\u5e26\u7269\u8054\u7f51\u5e94\u8fd0\u800c\u751f\u30022016\u5e746\u6708，\u7b2c\u4e09\u4ee3\u5408\u4f5c\u4f19\u4f34\u8ba1\u5212\u4e3b\u5bfc\u7684R13\u6807\u51c6\u6838\u5fc3\u534f\u8bae\u51bb\u7ed3，\u6807\u5fd7\u7740\u8fd9\u9879\u6280\u672f\u6b63\u5f0f\u8fdb\u5165\u89c4\u6a21\u5546\u7528\u9636\u6bb5\u3002<\/p>\n

NB-IoT\u4e0d\u4ec5\u88ab\u7eb3\u51655G\u5019\u9009\u6280\u672f\u96c6\u5408，\u66f4\u5728\u5168\u7403\u8303\u56f4\u5185\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528\u3002\u4e2d\u56fd\u5df2\u5efa\u6210\u5168\u7403\u6700\u5927\u7684NB-IoT\u7f51\u7edc，\u57fa\u7ad9\u6570\u91cf\u8d85\u767e\u4e07\u4e2a，\u4e3a\u667a\u80fd\u6284\u8868\u3001\u667a\u6167\u57ce\u5e02\u7b49\u5e94\u7528\u573a\u666f\u63d0\u4f9b\u4e86\u575a\u5b9e\u57fa\u7840\u3002<\/p>\n

\n

01 \u6280\u672f\u539f\u7406\u4e0e\u6838\u5fc3\u7279\u6027<\/h3>\n

NB-IoT\u7684\u8bde\u751f\u6e90\u4e8e\u5bf9\u7269\u8054\u7f51\u7279\u5b9a\u9700\u6c42\u7684\u6df1\u5165\u7406\u89e3\u3002\u4e0e\u4f20\u7edf\u79fb\u52a8\u901a\u4fe1\u6280\u672f\u4e0d\u540c，\u7269\u8054\u7f51\u5e94\u7528\u901a\u5e38\u53ea\u9700\u8981\u95f4\u6b47\u6027\u4f20\u8f93\u5c11\u91cf\u6570\u636e，\u4f46\u5bf9\u7535\u6c60\u5bff\u547d\u548c\u8986\u76d6\u8303\u56f4\u6709\u6781\u9ad8\u8981\u6c42\u3002<\/p>\n

\u4ece\u901a\u4fe1\u7406\u8bba\u89d2\u5ea6\u770b，NB-IoT\u901a\u8fc7\u51cf\u5c11\u5e26\u5bbd\u6362\u53d6\u66f4\u597d\u7684\u8986\u76d6\u548c\u529f\u8017\u8868\u73b0\u3002\u5176\u6838\u5fc3\u539f\u7406\u53ef\u901a\u8fc7\u4ee5\u4e0b\u4fe1\u9053\u5bb9\u91cf\u516c\u5f0f\u8868\u793a：<\/p>\n

C = B \u00d7 log\u2082(1 + S\/N)<\/p>\n

\u5176\u4e2dC\u4e3a\u4fe1\u9053\u5bb9\u91cf，B\u4e3a\u5e26\u5bbd，S\/N\u4e3a\u4fe1\u566a\u6bd4\u3002NB-IoT\u4ec5\u4f7f\u7528\u7ea6180kHz\u5e26\u5bbd，\u901a\u8fc7\u964d\u4f4eB\u503c，\u5728\u76f8\u540cS\/N\u4e0b\u83b7\u5f97\u66f4\u8fdc\u7684\u4f20\u8f93\u8ddd\u79bb\u3002<\/p>\n

NB-IoT\u6784\u5efa\u4e8e\u73b0\u6709\u79fb\u52a8\u901a\u4fe1\u7f51\u7edc\u4e4b\u4e0a，\u652f\u6301\u4e09\u79cd\u90e8\u7f72\u6a21\u5f0f：\u72ec\u7acb\u90e8\u7f72\u3001\u4fdd\u62a4\u5e26\u90e8\u7f72\u548c\u5e26\u5185\u90e8\u7f72\u3002\u8fd9\u79cd\u7075\u6d3b\u6027\u4f7f\u5f97\u8fd0\u8425\u5546\u80fd\u591f\u5145\u5206\u5229\u7528\u73b0\u6709\u7f51\u7edc\u8d44\u6e90，\u663e\u8457\u964d\u4f4e\u90e8\u7f72\u6210\u672c\u3002<\/p>\n

\u5728\u8986\u76d6\u80fd\u529b\u65b9\u9762，NB-IoT\u7684\u6700\u5927\u8026\u5408\u635f\u8017\u53ef\u8fbe164dB，\u6bd4\u4f20\u7edf\u7f51\u7edc\u589e\u76ca20dB，\u76f8\u5f53\u4e8e\u8986\u76d6\u533a\u57df\u80fd\u529b\u63d0\u5347\u4e86100\u500d\u3002\u8fd9\u610f\u5473\u7740NB-IoT\u4fe1\u53f7\u53ef\u4ee5\u7a7f\u900f\u5230\u5730\u4e0b\u505c\u8f66\u573a\u3001\u7ba1\u9053\u5185\u90e8\u7b49\u4f20\u7edf\u4fe1\u53f7\u5f31\u533a\u3002\"\"<\/p>\n

02 \u5173\u952e\u6280\u672f\u53c2\u6570\u4e0e\u6570\u5b66\u6a21\u578b<\/h3>\n

NB-IoT\u7684\u6280\u672f\u4f18\u52bf\u53ef\u901a\u8fc7\u4e00\u7cfb\u5217\u5173\u952e\u53c2\u6570\u5f97\u4ee5\u91cf\u5316\u3002\u4ece\u7269\u7406\u5c42\u6765\u770b，\u4e0b\u884c\u91c7\u7528\u6b63\u4ea4\u9891\u5206\u591a\u5740，\u4e0a\u884c\u91c7\u7528\u5355\u8f7d\u6ce2\u9891\u5206\u591a\u5740\u4e24\u79cd\u591a\u5740\u63a5\u5165\u65b9\u5f0f\u3002<\/p>\n

\u5b50\u8f7d\u6ce2\u95f4\u9694\u662fNB-IoT\u8bbe\u8ba1\u4e2d\u7684\u91cd\u8981\u53c2\u6570\u3002\u4e0a\u884c\u652f\u63013.75kHz\u548c15kHz\u4e24\u79cd\u53ef\u914d\u7f6e\u7684\u5b50\u8f7d\u6ce2\u95f4\u9694\u3002\u8fd9\u4e00\u8bbe\u8ba1\u4f7f\u5f97\u7cfb\u7edf\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u5e94\u7528\u573a\u666f\u52a8\u6001\u8c03\u6574，\u5b9e\u73b0\u529f\u8017\u4e0e\u4f20\u8f93\u6548\u7387\u7684\u6700\u4f18\u5e73\u8861\u3002<\/p>\n

\u5728\u94fe\u8def\u9884\u7b97\u65b9\u9762，NB-IoT\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u5b9e\u73b0\u8986\u76d6\u589e\u5f3a：<\/p>\n

P_rx = P_tx + G_tx + G_rx – L_path<\/p>\n

\u5176\u4e2dP_rx\u4e3a\u63a5\u6536\u529f\u7387，P_tx\u4e3a\u53d1\u5c04\u529f\u7387，G_tx\u548cG_rx\u5206\u522b\u4e3a\u53d1\u5c04\u548c\u63a5\u6536\u5929\u7ebf\u589e\u76ca，L_path\u4e3a\u8def\u5f84\u635f\u8017\u3002\u901a\u8fc7\u91cd\u590d\u4f20\u8f93\u548c\u529f\u7387\u8c31\u5bc6\u5ea6\u63d0\u5347\u6280\u672f，NB-IoT\u663e\u8457\u964d\u4f4e\u4e86\u5b9e\u9645\u8def\u5f84\u635f\u8017\u7684\u5f71\u54cd\u3002<\/p>\n

\u7535\u6c60\u5bff\u547d\u662f\u7269\u8054\u7f51\u8bbe\u5907\u7684\u5173\u952e\u6307\u6807\u3002NB-IoT\u5f15\u5165\u8282\u7535\u6a21\u5f0f\u548c\u6269\u5c55\u7684\u975e\u8fde\u7eed\u63a5\u6536\u4e24\u79cd\u8282\u80fd\u673a\u5236，\u4f7f\u7ec8\u7aef\u8bbe\u5907\u7535\u6c60\u5bff\u547d\u53ef\u8fbe10\u5e74\u4ee5\u4e0a\u3002\u5176\u529f\u8017\u6a21\u578b\u53ef\u8868\u793a\u4e3a：<\/p>\n

E_total = E_tx \u00d7 T_tx + E_rx \u00d7 T_rx + E_sleep \u00d7 T_sleep<\/p>\n

\u5176\u4e2dE\u4ee3\u8868\u80fd\u91cf\u6d88\u8017，T\u4ee3\u8868\u65f6\u95f4，\u4e0b\u6807\u5206\u522b\u8868\u793a\u53d1\u5c04\u3001\u63a5\u6536\u548c\u7761\u7720\u72b6\u6001\u3002\u901a\u8fc7\u6700\u5927\u5316T_sleep\u5360\u6bd4，NB-IoT\u5b9e\u73b0\u4e86\u6781\u4f4e\u529f\u8017\u3002<\/p>\n

03 \u4e0e\u5176\u4ed6LPWAN\u6280\u672f\u7684\u6bd4\u8f83<\/h3>\n

\u5728\u4f4e\u529f\u8017\u5e7f\u57df\u7f51\u7edc\u6280\u672f\u5bb6\u65cf\u4e2d，NB-IoT\u4e0e\u8fdc\u8ddd\u79bb\u662f\u4e24\u5927\u4e3b\u6d41\u6280\u672f\u3002\u867d\u7136\u90fd\u9762\u5411\u7269\u8054\u7f51\u5e94\u7528，\u4f46\u4e8c\u8005\u5728\u6280\u672f\u7279\u6027\u548c\u9002\u7528\u573a\u666f\u4e0a\u5b58\u5728\u663e\u8457\u5dee\u5f02\u3002<\/p>\n

NB-IoT\u5de5\u4f5c\u5728\u6388\u6743\u9891\u8c31，\u800cLoRa\u4f7f\u7528\u975e\u6388\u6743\u9891\u8c31\u3002\u8fd9\u4e00\u6839\u672c\u533a\u522b\u51b3\u5b9a\u4e86NB-IoT\u5177\u6709\u66f4\u9ad8\u7684\u901a\u4fe1\u53ef\u9760\u6027\u548c\u5b89\u5168\u6027，\u9002\u5408\u9700\u8981\u9ad8\u8d28\u91cf\u670d\u52a1\u4fdd\u969c\u7684\u5e94\u7528\u573a\u666f\u3002<\/p>\n

\u4ece\u7f51\u7edc\u90e8\u7f72\u89d2\u5ea6\u770b，NB-IoT\u4f9d\u8d56\u4e8e\u8fd0\u8425\u5546\u7f51\u7edc，\u800cLoRa\u53ef\u4ee5\u6784\u5efa\u79c1\u6709\u7f51\u7edc\u3002\u8fd9\u79cd\u5dee\u5f02\u4f7f\u5f97NB-IoT\u66f4\u9002\u5408\u5e7f\u57df\u8986\u76d6\u573a\u666f，\u800cLoRa\u5728\u7279\u5b9a\u533a\u57df\u5185\u7684\u4e13\u7f51\u90e8\u7f72\u4e2d\u66f4\u5177\u7075\u6d3b\u6027\u3002<\/p>\n

\u6280\u672f\u6027\u80fd\u65b9\u9762，NB-IoT\u5728\u8986\u76d6\u6df1\u5ea6\u548c\u7f51\u7edc\u5bb9\u91cf\u4e0a\u5177\u6709\u4f18\u52bf，\u800cLoRa\u5728\u6210\u672c\u548c\u90e8\u7f72\u7075\u6d3b\u6027\u65b9\u9762\u8868\u73b0\u66f4\u4f73\u3002\u8fd9\u4e00\u5dee\u5f02\u53ef\u8868\u793a\u4e3a：<\/p>\n

\u7f51\u7edc\u9009\u62e9\u51fd\u6570 = f(\u8986\u76d6\u9700\u6c42，\u6210\u672c\u7ea6\u675f，\u90e8\u7f72\u89c4\u6a21)<\/p>\n

\u6839\u636e\u4e0d\u540c\u7684\u5e94\u7528\u9700\u6c42，\u5f00\u53d1\u8005\u53ef\u4ee5\u5728\u6b64\u6280\u672f\u77e9\u9635\u4e2d\u9009\u62e9\u6700\u5408\u9002\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n

\u5168\u7403\u79fb\u52a8\u901a\u4fe1\u7cfb\u7edf\u534f\u4f1a\u7684\u6700\u65b0\u62a5\u544a\u663e\u793a，\u622a\u81f32023\u5e74，\u5168\u7403\u5df2\u5efa\u6210501\u5f20LPWAN\u7f51\u7edc，\u5176\u4e2dNB-IoT\u7f51\u7edc\u8fbe89\u5f20，\u4e14\u88ab\u7eb3\u51655G\u6807\u51c6\u4f53\u7cfb，\u672a\u6765\u53d1\u5c55\u524d\u666f\u5e7f\u9614\u3002<\/p>\n

04 \u5b9e\u9645\u5e94\u7528\u573a\u666f\u4e0e\u6848\u4f8b<\/h3>\n

NB-IoT\u7684\u6280\u672f\u7279\u6027\u4f7f\u5176\u5728\u591a\u4e2a\u9886\u57df\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528\u3002\u667a\u80fd\u6284\u8868\u662fNB-IoT\u6700\u5178\u578b\u7684\u5e94\u7528\u573a\u666f\u4e4b\u4e00\u3002\u4f20\u7edf\u4eba\u5de5\u6284\u8868\u6548\u7387\u4f4e\u4e0b，\u800c\u57fa\u4e8eNB-IoT\u7684\u81ea\u52a8\u6284\u8868\u7cfb\u7edf\u53ef\u5b9e\u73b0\u8fdc\u7a0b\u8bfb\u6570，\u5927\u5e45\u51cf\u5c11\u4eba\u5de5\u6210\u672c\u3002<\/p>\n

\u5728\u667a\u6167\u57ce\u5e02\u5efa\u8bbe\u4e2d，NB-IoT\u5e94\u7528\u4e8e\u667a\u80fd\u8def\u706f\u63a7\u5236\u3001\u667a\u80fd\u505c\u8f66\u7cfb\u7edf\u548c\u73af\u5883\u76d1\u6d4b\u7b49\u9886\u57df\u3002\u4f8b\u5982，\u667a\u80fd\u4e95\u76d6\u76d1\u63a7\u7cfb\u7edf\u53ef\u5b9e\u65f6\u76d1\u6d4b\u4e95\u76d6\u72b6\u6001，\u53ca\u65f6\u9884\u8b66\u5f02\u5e38\u5f00\u542f，\u4fdd\u969c\u5e02\u6c11\u5b89\u5168\u3002<\/p>\n

\u6570\u5b66\u4e0a，\u8fd9\u4e9b\u76d1\u6d4b\u7cfb\u7edf\u53ef\u5efa\u6a21\u4e3a：<\/p>\n

A = {S, T, P, F}<\/p>\n

\u5176\u4e2dS\u8868\u793a\u4f20\u611f\u5668\u96c6\u5408，T\u4e3a\u65f6\u95f4\u5e8f\u5217，P\u4e3a\u76d1\u6d4b\u53c2\u6570，F\u4e3a\u72b6\u6001\u8bc4\u4f30\u51fd\u6570\u3002\u5f53\u7cfb\u7edf\u68c0\u6d4b\u5230\u5f02\u5e38\u72b6\u6001\u65f6，\u81ea\u52a8\u89e6\u53d1\u62a5\u8b66\u673a\u5236\u3002<\/p>\n

\u667a\u6167\u519c\u4e1a\u4e2d\u7684\u571f\u58e4\u76d1\u6d4b\u3001\u6c14\u8c61\u7ad9\u6570\u636e\u6536\u96c6\u7b49\u5e94\u7528，\u4e5f\u56e0NB-IoT\u7684\u5e7f\u8986\u76d6\u7279\u6027\u800c\u5f97\u4ee5\u5728\u504f\u8fdc\u7684\u519c\u7530\u4e2d\u90e8\u7f72\u3002\u8fd9\u4e9b\u7cfb\u7edf\u5e2e\u52a9\u519c\u6c11\u5b9e\u73b0\u7cbe\u51c6\u519c\u4e1a，\u63d0\u9ad8\u519c\u4f5c\u7269\u4ea7\u91cf\u548c\u8d28\u91cf\u3002<\/p>\n

\u5728\u7269\u6d41\u8ffd\u8e2a\u9886\u57df，NB-IoT\u51ed\u501f\u5176\u4f4e\u529f\u8017\u548c\u5e7f\u8986\u76d6\u7279\u6027，\u6210\u4e3a\u96c6\u88c5\u7bb1\u8ffd\u8e2a\u3001\u51b7\u94fe\u7269\u6d41\u7b49\u5e94\u7528\u7684\u7406\u60f3\u9009\u62e9\u3002\u8bbe\u5907\u5728\u8fdc\u6d0b\u8fd0\u8f93\u573a\u666f\u4e0b\u4ecd\u80fd\u7ef4\u63013-10\u5e74\u7684\u7eed\u822a\u80fd\u529b，\u4fdd\u8bc1\u8d27\u7269\u5168\u7a0b\u53ef\u8ffd\u6eaf\u3002<\/p>\n

05 \u672a\u6765\u53d1\u5c55\u8d8b\u52bf\u4e0e\u5c55\u671b<\/h3>\n

\u968f\u77405G\u65f6\u4ee3\u7684\u5168\u9762\u5230\u6765，NB-IoT\u6280\u672f\u5c06\u7ee7\u7eed\u6f14\u8fdb\u30023GPP\u5df2\u5c06\u5176\u7eb3\u51655G\u6807\u51c6\u4f53\u7cfb，\u5e76\u652f\u6301\u964d\u4f4e\u80fd\u529b\u6280\u672f\u5b9e\u73b0\u66f4\u4f4e\u590d\u6742\u5ea6\u8bbe\u5907\u63a5\u5165\u3002<\/p>\n

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\u8fde\u63a5\u6570\u589e\u957f\u66f2\u7ebf = \u03b1 \u00d7 e^(\u03b2t)<\/p>\n

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\n

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