{"id":451,"date":"2026-07-01T16:01:33","date_gmt":"2026-07-01T08:01:33","guid":{"rendered":"http:\/\/www.millscience.cn\/?p=451"},"modified":"2026-07-01T16:01:37","modified_gmt":"2026-07-01T08:01:37","slug":"yidogntongxing","status":"publish","type":"post","link":"https:\/\/www.millscience.cn\/index.php\/yidogntongxing\/","title":{"rendered":"\u79fb\u52a8\u901a\u4fe1"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">#<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">5G \u901a\u4fe1\u6280\u672f\u57fa\u7840\u8003\u8bd5\u9898\u76ee<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u516d\u7ae0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. (\u5355\u9009\u9898) \u7b2c\u4e94\u4ee3\u79fb\u52a8\u901a\u4fe1\u7cfb\u7edf\u6700\u9ad8\u901f\u7387\u5c06\u8fbe\u5230( )\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. 1Gbps<\/li>\n\n\n\n<li>B. 10Gbps<\/li>\n\n\n\n<li>C. 100Mbps<\/li>\n\n\n\n<li>D. 50Gbps<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6211\u7684\u7b54\u6848\uff1a<\/strong> B <strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. (\u5355\u9009\u9898) 5G NR\uff08New Radio\uff09\u7684\u7a7a\u53e3\u6807\u51c6\u4e3b\u8981\u7531\u54ea\u4e2a\u7ec4\u7ec7\u5236\u5b9a\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. IEEE<\/li>\n\n\n\n<li>B. 3GPP<\/li>\n\n\n\n<li>C. ITU-R<\/li>\n\n\n\n<li>D. ETSI<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6211\u7684\u7b54\u6848\uff1a<\/strong> B <strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. (\u5355\u9009\u9898) 5G FR1\u9891\u6bb5\u7684\u8303\u56f4\u662f\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. 450 MHz \u2013 6 GHz<\/li>\n\n\n\n<li>B. 24 GHz \u2013 52 GHz<\/li>\n\n\n\n<li>C. 3 GHz \u2013 30 GHz<\/li>\n\n\n\n<li>D. 6 GHz \u2013 100 GHz<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6211\u7684\u7b54\u6848\uff1a<\/strong> A <strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> A<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. (\u5355\u9009\u9898) 5G\u5e27\u7ed3\u6784\u4e2d\uff0c\u4e00\u4e2a\u65e0\u7ebf\u5e27\u7684\u65f6\u957f\u4e3a\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. 1 ms<\/li>\n\n\n\n<li>B. 10 ms<\/li>\n\n\n\n<li>C. 0.5 ms<\/li>\n\n\n\n<li>D. 5 ms<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6211\u7684\u7b54\u6848\uff1a<\/strong> B <strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5. (\u5355\u9009\u9898) 5G\u4e2d\u5927\u89c4\u6a21MIMO\uff08Massive MIMO\uff09\u7684\u5929\u7ebf\u6570\u91cf\u901a\u5e38\u6307\u7684\u662f\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. 2~6\u4e2a<\/li>\n\n\n\n<li>B. 8~16\u4e2a<\/li>\n\n\n\n<li>C. 64~256\u4e2a\u6216\u66f4\u591a<\/li>\n\n\n\n<li>D. 512\u4e2a\u4ee5\u4e0a<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6211\u7684\u7b54\u6848\uff1a<\/strong> C <strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> C<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">6. (\u5355\u9009\u9898) \u6ce2\u675f\u8d4b\u5f62\u57285G\u4e2d\u7684\u4e3b\u8981\u4f5c\u7528\u662f\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u63d0\u9ad8\u4fe1\u5e72\u566a\u6bd4\u548c\u8986\u76d6<\/li>\n\n\n\n<li>B. \u964d\u4f4e\u5cf0\u5747\u6bd4<\/li>\n\n\n\n<li>C. \u7b80\u5316\u4fe1\u9053\u4f30\u8ba1<\/li>\n\n\n\n<li>D. \u51cf\u5c11\u65f6\u5ef6<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6211\u7684\u7b54\u6848\uff1a<\/strong> A <strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> A<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">7. (\u5355\u9009\u9898) \u4ee5\u4e0b\u54ea\u4e2a\u662f5G mMTC\u573a\u666f\u7684\u4e3b\u8981\u6280\u672f\u7279\u5f81\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u6781\u9ad8\u5cf0\u901f\u7387<\/li>\n\n\n\n<li>B. \u8d85\u5927\u8fde\u63a5\u6570\uff08\u767e\u4e07\/km\u00b2\uff09<\/li>\n\n\n\n<li>C. \u8d85\u4f4e\u65f6\u5ef6<\/li>\n\n\n\n<li>D. \u9ad8\u901f\u79fb\u52a8<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6211\u7684\u7b54\u6848\uff1a<\/strong> B <strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">8. (\u5355\u9009\u9898) 5G\u7684\u5cf0\u503c\u901f\u7387\u8981\u6c42\uff08eMBB\uff09\u5728ITU\u6807\u51c6\u4e2d\u4e3a\u4e0b\u884c\u4e0d\u4f4e\u4e8e\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. 1 Gbps<\/li>\n\n\n\n<li>B. 10 Gbps<\/li>\n\n\n\n<li>C. 20 Gbps<\/li>\n\n\n\n<li>D. 100 Gbps<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> C<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">9. (\u5355\u9009\u9898) 5G\u652f\u6301\u7684\u9891\u6bb5\u4e2d\uff0c\u6beb\u7c73\u6ce2\u9891\u6bb5\u7684\u5178\u578b\u8986\u76d6\u7279\u70b9\u662f\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u8986\u76d6\u8ddd\u79bb\u8fdc\u3001\u7a7f\u900f\u80fd\u529b\u5f3a<\/li>\n\n\n\n<li>B. \u8986\u76d6\u8ddd\u79bb\u8fd1\u3001\u7a7f\u900f\u80fd\u529b\u5dee<\/li>\n\n\n\n<li>C. \u8986\u76d6\u8ddd\u79bb\u8fdc\u3001\u7a7f\u900f\u80fd\u529b\u5dee<\/li>\n\n\n\n<li>D. \u8986\u76d6\u8ddd\u79bb\u8fd1\u3001\u7a7f\u900f\u80fd\u529b\u5f3a<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6211\u7684\u7b54\u6848\uff1a<\/strong> B <strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">10. (\u5355\u9009\u9898) 5G\u652f\u6301\u7684\u6700\u5927\u4fe1\u9053\u5e26\u5bbd\uff08\u5355\u8f7d\u6ce2\uff09\u4e3a\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. 100 MHz<\/li>\n\n\n\n<li>B. 200 MHz<\/li>\n\n\n\n<li>C. 400 MHz<\/li>\n\n\n\n<li>D. 1 GHz<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6211\u7684\u7b54\u6848\uff1a<\/strong> B <strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> C<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">11. (\u586b\u7a7a\u9898) 5G\u5b9a\u4e49\u7684\u4e09\u5927\u5e94\u7528\u573a\u666f\u662f\uff1aeMBB\uff08\u589e\u5f3a\u79fb\u52a8\u5bbd\u5e26\uff09\u3001URLLC\uff08\u8d85\u53ef\u9760\u4f4e\u65f6\u5ef6\u901a\u4fe1\uff09\u548c <strong>__<\/strong>\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> mMTC\uff08\u6d77\u91cf\u673a\u5668\u7c7b\u901a\u4fe1\uff09<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">12. (\u586b\u7a7a\u9898) 5G\u5e27\u7ed3\u6784\u4e2d\uff0c\u4e00\u4e2a\u5b50\u5e27\u7684\u65f6\u957f\u4e3a <strong>__<\/strong> ms\uff0c\u4e00\u4e2a\u65f6\u9699\u7684\u65f6\u957f\u968f\u5b50\u8f7d\u6ce2\u95f4\u9694\u53d8\u5316\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> 1<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">13. (\u586b\u7a7a\u9898) 5G NR\u4e2d\uff0c\u7528\u4e8e\u4e0b\u884c\u4fe1\u9053\u8d28\u91cf\u6d4b\u91cf\u7684\u53c2\u8003\u4fe1\u53f7\u662f <strong>__<\/strong>\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> CSI-RS\uff08\u4fe1\u9053\u72b6\u6001\u4fe1\u606f\u53c2\u8003\u4fe1\u53f7\uff09<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">14. (\u586b\u7a7a\u9898) 5G NR\u7684\u6700\u5c0f\u8c03\u5ea6\u5355\u4f4d\u662f <strong>__<\/strong>\uff0c\u5176\u957f\u5ea6\u5728\u65f6\u57df\u4e0a\u4e3a14\u4e2aOFDM\u7b26\u53f7\uff08\u6b63\u5e38CP\uff09\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u65f6\u9699\uff08slot\uff09<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">15. (\u586b\u7a7a\u9898) 5G NR\u4e2d\uff0c\u6570\u636e\u4fe1\u9053\u91c7\u7528\u7684\u4fe1\u9053\u7f16\u7801\u662f <strong>__<\/strong>\uff0c\u63a7\u5236\u4fe1\u9053\u91c7\u7528\u7684\u4fe1\u9053\u7f16\u7801\u662f <strong>__<\/strong>\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> &gt; (1) LDPC (2) Polar<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">16. (\u5224\u65ad\u9898) 5G\u4e2d\uff0c\u6beb\u7c73\u6ce2\u9891\u6bb5\uff08FR2\uff09\u7684\u8986\u76d6\u80fd\u529b\u4f18\u4e8eSub-6GHz\u9891\u6bb5\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u9519<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">17. (\u5224\u65ad\u9898) 5G NR\u4ec5\u652f\u6301TDD\u53cc\u5de5\u6a21\u5f0f\uff0c\u4e0d\u652f\u6301FDD\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u9519<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">18. (\u5224\u65ad\u9898) 5G NR\u4e2d\uff0c\u5faa\u73af\u524d\u7f00\uff08CP\uff09\u7684\u957f\u5ea6\u56fa\u5b9a\u4e0d\u53d8\uff0c\u4e0e\u5b50\u8f7d\u6ce2\u95f4\u9694\u65e0\u5173\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u9519<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">19. (\u5224\u65ad\u9898) 5G\u4e2d\uff0c\u6ce2\u675f\u8d4b\u5f62\u4ec5\u7528\u4e8e\u4e0b\u884c\u4f20\u8f93\uff0c\u4e0a\u884c\u65e0\u6cd5\u4f7f\u7528\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u9519<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">20. (\u5224\u65ad\u9898) 5G\u652f\u6301\u7684\u6700\u9ad8\u8c03\u5236\u65b9\u5f0f\u4e3a256QAM\uff0c\u5c1a\u672a\u652f\u63011024QAM\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u5bf9<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e94\u7ae0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. (\u5355\u9009\u9898, 5.0\u5206) LTE \u7a7a\u4e2d\u63a5\u53e3\u7684\u4e0b\u884c\u591a\u5740\u63a5\u5165\u65b9\u5f0f\u4e3a\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. CDMA<\/li>\n\n\n\n<li>B. TDMA<\/li>\n\n\n\n<li>C. OFDMA<\/li>\n\n\n\n<li>D. SC-FDMA<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> C<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. (\u5355\u9009\u9898, 5.0\u5206) LTE \u6838\u5fc3\u7f51 EPC \u4e2d\uff0c\u8d1f\u8d23\u7528\u6237 IP \u5730\u5740\u5206\u914d\u548c\u79fb\u52a8\u6027\u951a\u70b9\u7684\u7f51\u5143\u662f\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. MME<\/li>\n\n\n\n<li>B. HSS<\/li>\n\n\n\n<li>C. P-GW<\/li>\n\n\n\n<li>D. S-GW<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> C<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. (\u5355\u9009\u9898, 5.0\u5206) LTE \u4e2d\uff0c\u7528\u4e8e\u4e0b\u884c\u4fe1\u9053\u8d28\u91cf\u6d4b\u91cf\u548c\u4e0a\u62a5\u7684\u53c2\u8003\u4fe1\u53f7\u662f\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. SRS<\/li>\n\n\n\n<li>B. DMRS<\/li>\n\n\n\n<li>C. CRS<\/li>\n\n\n\n<li>D. PRS<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> C<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. (\u5355\u9009\u9898, 5.0\u5206) \u5173\u4e8e VoLTE \u7684\u63cf\u8ff0\uff0c\u6b63\u786e\u7684\u662f\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u8bed\u97f3\u4e1a\u52a1\u901a\u8fc7 CS \u57df\u627f\u8f7d<\/li>\n\n\n\n<li>B. \u8bed\u97f3\u4f5c\u4e3a IP \u6570\u636e\u6d41\u5728 EPS \u4e0a\u4f20\u8f93<\/li>\n\n\n\n<li>C. \u5fc5\u987b\u56de\u843d\u5230 3G \u624d\u80fd\u901a\u8bdd<\/li>\n\n\n\n<li>D. \u4e0d\u652f\u6301\u9ad8\u6e05\u8bed\u97f3<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5. (\u5355\u9009\u9898, 5.0\u5206) LTE \u7cfb\u7edf\u4e2d\uff0c\u4e00\u4e2a\u65e0\u7ebf\u5e27\u7684\u957f\u5ea6\u4e3a\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. 5 ms<\/li>\n\n\n\n<li>B. 10 ms<\/li>\n\n\n\n<li>C. 20 ms<\/li>\n\n\n\n<li>D. 1 ms<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">6. (\u5355\u9009\u9898, 5.0\u5206) \u5728 LTE \u4fe1\u4ee4\u4e2d\uff0cRRC \u8fde\u63a5\u5efa\u7acb\u8bf7\u6c42\u901a\u5e38\u7531\u8c01\u53d1\u8d77\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. eNodeB<\/li>\n\n\n\n<li>B. MME<\/li>\n\n\n\n<li>C. UE<\/li>\n\n\n\n<li>D. HSS<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> C<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">7. (\u5355\u9009\u9898, 5.0\u5206) \u5728 LTE \u4e2d\uff0cUE \u4ece\u7a7a\u95f2\u6001 (RRC_IDLE) \u8f6c\u4e3a\u8fde\u63a5\u6001 (RRC_CONNECTED) \u9700\u8981\u7ecf\u8fc7\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u968f\u673a\u63a5\u5165\u8fc7\u7a0b<\/li>\n\n\n\n<li>B. \u5207\u6362\u8fc7\u7a0b<\/li>\n\n\n\n<li>C. TAU \u8fc7\u7a0b<\/li>\n\n\n\n<li>D. \u53bb\u9644\u7740\u8fc7\u7a0b<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> A<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">8. (\u5355\u9009\u9898, 5.0\u5206) \u4ee5\u4e0b\u54ea\u4e2a\u7f51\u5143\u5b58\u50a8\u7528\u6237\u7684\u6c38\u4e45\u7b7e\u7ea6\u6570\u636e\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. MME<\/li>\n\n\n\n<li>B. S-GW<\/li>\n\n\n\n<li>C. HSS<\/li>\n\n\n\n<li>D. PCRF<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> C<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">9. (\u5355\u9009\u9898, 5.0\u5206) EPC \u4e2d\uff0c\u8d1f\u8d23\u7a7a\u95f2\u6001 UE \u8ddf\u8e2a\u548c\u5bfb\u547c\u6d88\u606f\u53d1\u9001\u7684\u7f51\u5143\u662f\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. MME<\/li>\n\n\n\n<li>B. P-GW<\/li>\n\n\n\n<li>C. S-GW<\/li>\n\n\n\n<li>D. eNodeB<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> A<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">10. (\u5355\u9009\u9898, 5.0\u5206) \u4ee5\u4e0b\u54ea\u4e2a\u63a5\u53e3\u8fde\u63a5 eNodeB \u4e0e MME\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. S1-U<\/li>\n\n\n\n<li>B. S1-MME<\/li>\n\n\n\n<li>C. X2<\/li>\n\n\n\n<li>D. S11<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">11. (\u586b\u7a7a\u9898, 5.0\u5206) LTE \u7684\u7a7a\u4e2d\u63a5\u53e3\u79f0\u4e3a <strong>__<\/strong>\uff0c\u6838\u5fc3\u7f51\u79f0\u4e3a <strong>__<\/strong>\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> &gt; (1) Uu (2) EPC<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">12. (\u586b\u7a7a\u9898, 5.0\u5206) LTE \u7cfb\u7edf\u7684\u6700\u5c0f\u8c03\u5ea6\u5355\u4f4d\u662f <strong>__<\/strong> \uff08\u65f6\u9891\u4e8c\u7ef4\uff09\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> &gt; (1) \u8d44\u6e90\u5757 (RB)<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">13. (\u586b\u7a7a\u9898, 5.0\u5206) \u5728 VoLTE \u4e2d\uff0c\u8bed\u97f3\u4e1a\u52a1\u7684 QoS \u7b49\u7ea7\u6807\u8bc6\uff08QCI\uff09\u901a\u5e38\u4e3a <strong>__<\/strong>\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> &gt; (1) QCI 1<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">14. (\u586b\u7a7a\u9898, 5.0\u5206) LTE \u7cfb\u7edf\u7684\u5e27\u7ed3\u6784\u7c7b\u578b 1 \u7528\u4e8e <strong>__<\/strong> \u53cc\u5de5\u65b9\u5f0f\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> &gt; (1) FDD<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">15. (\u586b\u7a7a\u9898, 5.0\u5206) \u5bf9\u4e8e FDD-LTE\uff0c\u4e0a\u4e0b\u884c\u5728 <strong>__<\/strong> \u57df\u4e0a\u5206\u79bb\uff1b\u5bf9\u4e8e TDD-LTE\uff0c\u4e0a\u4e0b\u884c\u5728 <strong>__<\/strong> \u57df\u4e0a\u5206\u79bb\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> &gt; (1) \u9891\u7387 (2) \u65f6\u95f4<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">16. (\u5224\u65ad\u9898, 5.0\u5206) \u4e00\u4e2a\u8d44\u6e90\u5757\uff08RB\uff09\u5728\u9891\u57df\u4e0a\u5360 12 \u4e2a\u8fde\u7eed\u5b50\u8f7d\u6ce2\uff0c\u65f6\u57df\u4e0a\u5360 1 \u4e2a\u65f6\u9699\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u5bf9<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">17. (\u5224\u65ad\u9898, 5.0\u5206) \u5728 LTE \u4e2d\uff0c\u968f\u673a\u63a5\u5165\u8fc7\u7a0b\u603b\u662f\u7531 UE \u53d1\u8d77\u7684\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u9519<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">18. (\u5224\u65ad\u9898, 5.0\u5206) TDD-LTE \u548c FDD-LTE \u7684\u5e27\u7ed3\u6784\u5b8c\u5168\u76f8\u540c\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u9519<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">19. (\u5224\u65ad\u9898, 5.0\u5206) LTE \u7684 HARQ \u91c7\u7528 Chase \u5408\u5e76 (CC) \u548c\u589e\u91cf\u5197\u4f59 (IR) \u4e24\u79cd\u65b9\u5f0f\uff0cIR \u6027\u80fd\u66f4\u4f18\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u5bf9<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">20. (\u5224\u65ad\u9898, 5.0\u5206) MME \u901a\u8fc7 S1-MME \u63a5\u53e3\u4e0e eNodeB \u4ea4\u4e92\u975e\u63a5\u5165\u5c42 (NAS) \u4fe1\u4ee4\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u5bf9<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u56db\u7ae0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. (\u5355\u9009\u9898, 5.0\u5206) GSM \u7cfb\u7edf\u4e2d\uff0c\u4e00\u4e2a TDMA \u5e27\u5305\u542b\u591a\u5c11\u4e2a\u65f6\u9699\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. 4<\/li>\n\n\n\n<li>B. 6<\/li>\n\n\n\n<li>C. 8<\/li>\n\n\n\n<li>D. 10<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> C<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. (\u5355\u9009\u9898, 5.0\u5206) \u4ee5\u4e0b\u54ea\u4e2a\u7f51\u5143\u8d1f\u8d23\u5b58\u50a8\u7528\u6237\u7684\u56fd\u9645\u79fb\u52a8\u7528\u6237\u8bc6\u522b\u7801\uff08IMSI\uff09\u548c\u7b7e\u7ea6\u4fe1\u606f\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. VLR<\/li>\n\n\n\n<li>B. HLR<\/li>\n\n\n\n<li>C. AUC<\/li>\n\n\n\n<li>D. EIR<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. (\u5355\u9009\u9898, 5.0\u5206) \u5728 GSM \u9274\u6743\u8fc7\u7a0b\u4e2d\uff0cAUC \u751f\u6210\u7684\u4e09\u5143\u7ec4\u4e0d\u5305\u542b\u4ee5\u4e0b\u54ea\u4e00\u9879\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. RAND<\/li>\n\n\n\n<li>B. SRES<\/li>\n\n\n\n<li>C. Kc<\/li>\n\n\n\n<li>D. CK<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> D<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. (\u5355\u9009\u9898, 5.0\u5206) TD-SCDMA \u7684\u6838\u5fc3\u53cc\u5de5\u65b9\u5f0f\u662f\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. FDD<\/li>\n\n\n\n<li>B. TDD<\/li>\n\n\n\n<li>C. \u534a\u53cc\u5de5<\/li>\n\n\n\n<li>D. \u5168\u53cc\u5de5<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5. (\u5355\u9009\u9898, 5.0\u5206) WCDMA \u7cfb\u7edf\u7684\u82af\u7247\u901f\u7387\uff08Chip Rate\uff09\u662f\u591a\u5c11\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. 1.2288 Mcps<\/li>\n\n\n\n<li>B. 3.84 Mcps<\/li>\n\n\n\n<li>C. 1.28 Mcps<\/li>\n\n\n\n<li>D. 4.096 Mcps<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">6. (\u5355\u9009\u9898, 5.0\u5206) GSM\u91c7\u7528\u7684\u6570\u5b57\u8c03\u5236\u65b9\u5f0f\u662f\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. BPSK<\/li>\n\n\n\n<li>B. QPSK<\/li>\n\n\n\n<li>C. GMSK<\/li>\n\n\n\n<li>D. 8PSK<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> C<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">7. (\u5355\u9009\u9898, 5.0\u5206) \u4e0b\u5217\u54ea\u4e2a\u662f3G\u7684\u56fd\u9645\u6807\u51c6\u4e4b\u4e00\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. GSM<\/li>\n\n\n\n<li>B. CDMA2000<\/li>\n\n\n\n<li>C. GPRS<\/li>\n\n\n\n<li>D. EDGE<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> B<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">8. (\u5355\u9009\u9898, 5.0\u5206) \u5728UMTS\u4e2d\uff0c\u8d1f\u8d23\u65e0\u7ebf\u8d44\u6e90\u63a7\u5236\u548c\u7ba1\u7406\u7684\u662f\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. SGSN<\/li>\n\n\n\n<li>B. GGSN<\/li>\n\n\n\n<li>C. MSC<\/li>\n\n\n\n<li>D. RNC<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> D<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">9. (\u5355\u9009\u9898, 5.0\u5206) 3G WCDMA\u7cfb\u7edf\u4e2d\uff0c\u6269\u9891\u56e0\u5b50\uff08SF\uff09\u7684\u53d6\u503c\u8303\u56f4\u901a\u5e38\u662f\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. 4~512<\/li>\n\n\n\n<li>B. 1~128<\/li>\n\n\n\n<li>C. 64~256<\/li>\n\n\n\n<li>D. 16~1024<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> A<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">10. (\u5355\u9009\u9898, 5.0\u5206) \u4e0b\u5217\u54ea\u79cd\u6280\u672f\u4e0d\u662f3G\u7cfb\u7edf\u91c7\u7528\u7684\u6838\u5fc3\u6280\u672f\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5feb\u901f\u529f\u7387\u63a7\u5236<\/li>\n\n\n\n<li>B. RAKE\u63a5\u6536<\/li>\n\n\n\n<li>C. OFDM<\/li>\n\n\n\n<li>D. \u8f6f\u5207\u6362<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> C<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">11. (\u586b\u7a7a\u9898, 5.0\u5206) 2000\u5e745\u6708\uff0c\u56fd\u9645\u7535\u4fe1\u8054\u76df\u6b63\u5f0f\u516c\u5e03\u4e86\u7b2c\u4e09\u4ee3\u79fb\u52a8\u901a\u4fe1\u7cfb\u7edf\u6807\u51c6\uff0cW&#8230;&#8230; <strong>__<\/strong> \u6210\u4e3a\u5168\u7403\u4e09\u5927\u4e3b\u6d41\u6807\u51c6\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> &gt; (1) TD-SCDMA<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">12. (\u586b\u7a7a\u9898, 5.0\u5206) 2G GSM \u7cfb\u7edf\u4e2d\uff0c\u7528\u4e8e\u8bdd\u97f3\u52a0\u5bc6\u7684\u7b97\u6cd5\u662f <strong>__<\/strong> \u7b97\u6cd5\u3002<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> &gt; (1) A5<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">13. (\u586b\u7a7a\u9898, 5.0\u5206) WCDMA \u4e2d\uff0c\u4e00\u4e2a\u65e0\u7ebf\u5e27\u7684\u957f\u5ea6\u662f <strong>__<\/strong> ms<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> &gt; (1) 10<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">14. (\u586b\u7a7a\u9898, 5.0\u5206) GSM\u7cfb\u7edf\u4e2d\uff0c\u79fb\u52a8\u53f0\u8fdb\u884c\u4f4d\u7f6e\u66f4\u65b0\u65f6\uff0cVLR \u4f1a\u4ece HLR \u83b7\u53d6\u7528\u6237\u7684 <strong>__<\/strong> \u6570\u636e<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> &gt; (1) \u7b7e\u7ea6<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">15. (\u586b\u7a7a\u9898, 5.0\u5206) GSM \u7cfb\u7edf\u4e2d\uff0c\u8bdd\u97f3\u4fe1\u53f7\u91c7\u7528 <strong>__<\/strong> \u7f16\u7801\u65b9\u5f0f<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> &gt; (1) RPE-LTP<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">16. (\u5224\u65ad\u9898, 5.0\u5206) \u5728 3G UMTS \u4e2d\uff0c\u8f6f\u5207\u6362\u53ea\u80fd\u5728\u540c\u9891\u5c0f\u533a\u4e4b\u95f4\u8fdb\u884c\u3002\uff08 \uff09<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u5bf9<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">17. (\u5224\u65ad\u9898, 5.0\u5206) 2G GSM \u6838\u5fc3\u7f51\u540c\u65f6\u5305\u542b\u7535\u8def\u57df\uff08CS\uff09\u548c\u5206\u7ec4\u57df\uff08PS\uff09\u3002\uff08 \uff09<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u9519<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">18. (\u5224\u65ad\u9898, 5.0\u5206) \u4e00\u4e2a\u4f4d\u7f6e\u533a\uff08LA\uff09\u53ef\u4ee5\u8de8\u8d8a\u591a\u4e2a MSC \u533a\u57df\u3002\uff08 \uff09<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u9519<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">19. (\u5224\u65ad\u9898, 5.0\u5206) WCDMA \u4e0b\u884c\u94fe\u8def\u91c7\u7528 BPSK \u8c03\u5236\u3002\uff08 \uff09<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u9519<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">20. (\u5224\u65ad\u9898, 5.0\u5206) TD-SCDMA \u91c7\u7528\u4e86\u8054\u5408\u68c0\u6d4b\u6280\u672f\u6765\u964d\u4f4e\u591a\u5740\u5e72\u6270\u3002<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \u5bf9<\/li>\n\n\n\n<li>B. \u9519<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6b63\u786e\u7b54\u6848\uff1a<\/strong> \u5bf9<\/p>\n<\/blockquote>\n\n\n\n<h1 class=\"wp-block-heading\">\u5927\u9898<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\">1<\/h1>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/E5B18FE5B995E688AAE59BBE202026-07-0120130057.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/E5B18FE5B995E688AAE59BBE202026-07-0120130057.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">(1) \u8ba1\u7b97\u81ea\u7531\u7a7a\u95f4\u4f20\u64ad\u635f\u8017 Lfs (\u5355\u4f4d\uff1adB)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8ba1\u7b97\u81ea\u7531\u7a7a\u95f4\u8def\u5f84\u635f\u8017\u7684\u5e38\u7528\u5de5\u7a0b\u7ecf\u9a8c\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{fs} = 32.44 + 20 \\lg d + 20 \\lg f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>(\u6ce8\uff1a\u516c\u5f0f\u4e2d\u8ddd\u79bb d \u7684\u5355\u4f4d\u76f4\u63a5\u4f7f\u7528 km\uff0c\u9891\u7387 f \u7684\u5355\u4f4d\u76f4\u63a5\u4f7f\u7528 MHz)<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c06\u5df2\u77e5\u6761\u4ef6\u4ee3\u5165\u516c\u5f0f\u8fdb\u884c\u8ba1\u7b97\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{fs} = 32.44 + 20 \\lg(25) + 20 \\lg(900)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{fs} \\approx 32.44 + 20 \\times 1.398 + 20 \\times 2.954<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{fs} \\approx 32.44 + 27.96 + 59.08<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{fs} = 119.48<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(2) \u6c42\u63a5\u6536\u529f\u7387 Pr (\u5355\u4f4d\uff1adBm)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7b2c\u4e00\u6b65\uff1a\u5c06\u53d1\u5c04\u529f\u7387 Pt \u8f6c\u6362\u4e3a dBm \u5355\u4f4d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5df2\u77e5\u53d1\u5c04\u529f\u7387\u4e3a 20 W\uff08\u5373 20000 mW\uff09\u3002\u8f6c\u6362\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P_{t(dBm)} = 10 \\lg P_{t(mW)}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u5165\u6570\u503c\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P_{t(dBm)} = 10 \\lg(20000) \\approx 10 \\times 4.301 = 43.01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\uff0c\u53d1\u5c04\u529f\u7387\u4e3a <strong>43.01 dBm<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7b2c\u4e8c\u6b65\uff1a\u5229\u7528\u94fe\u8def\u9884\u7b97\u516c\u5f0f\u8ba1\u7b97\u63a5\u6536\u529f\u7387<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6839\u636e Friis \u4f20\u8f93\u65b9\u7a0b\u7684\u5bf9\u6570\u5f62\u5f0f\uff0c\u63a5\u6536\u529f\u7387\u7b49\u4e8e\u53d1\u5c04\u529f\u7387\u52a0\u4e0a\u6536\u53d1\u5929\u7ebf\u589e\u76ca\uff0c\u518d\u51cf\u53bb\u8def\u5f84\u635f\u8017\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P_r = P_t + G_t + G_r &#8211; L_{fs}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>(\u6ce8\uff1a\u4ee3\u5165\u7684\u503c\u5747\u9700\u662f\u5bf9\u6570\u5355\u4f4d dBm \u6216 dB\/dBi)<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u5165\u524d\u9762\u6574\u7406\u548c\u8ba1\u7b97\u5f97\u51fa\u7684\u6570\u636e\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P_r = 43.01 + 2 + 3 &#8211; 119.48<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P_r = 48.01 &#8211; 119.48<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P_r = -71.47<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u7b54\uff1a<\/strong> \u63a5\u6536\u529f\u7387 Pr \u7ea6\u4e3a <strong>-71.47 dBm<\/strong>\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">2<\/h1>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/image-20260701132047640.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/image-20260701132047640.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20260701132047640\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\uff081\uff09\u7b49\u6548\u5730\u7403\u534a\u5f84<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">R_e = k \\cdot R<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e26\u5165\uff1aR_e = \\frac{4}{3} \\times 6370 = \\frac{25480}{3} \\approx 8493.33\\text{ km}<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uff082\uff09\u8ba1\u7b97\u6b64\u65f6\u89c6\u7ebf\u8ddd\u79bb d_0 (\u5355\u4f4d: \\text{km})<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u7b54\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8003\u8651\u5730\u7403\u66f2\u7387\u7684\u6781\u9650\u89c6\u7ebf\u8ddd\u79bb\uff08\u89c6\u8ddd\uff09\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">d_0 = \\sqrt{2R_e h_t} + \\sqrt{2R_e h_r}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u6ce8\u610f\uff1a\u4e3a\u4e86\u76f4\u63a5\u5f97\u51fa\u5355\u4f4d\u4e3a km \u7684\u7ed3\u679c\uff0c\u516c\u5f0f\u4e2d\u7684\u5929\u7ebf\u9ad8\u5ea6 h_t \u548c h_r \u9700\u8981\u8f6c\u6362\u4e3a km\u3002<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5df2\u77e5\u6761\u4ef6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53d1\u5c04\u5929\u7ebf\u9ad8\u5ea6 h_t = 50\\text{ m} = 0.05\\text{ km}<\/li>\n\n\n\n<li>\u63a5\u6536\u5929\u7ebf\u9ad8\u5ea6 h_r = 2\\text{ m} = 0.002\\text{ km}<\/li>\n\n\n\n<li>\u7b49\u6548\u5730\u7403\u534a\u5f84 R_e \\approx 8493.33\\text{ km}<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u5165\u6570\u636e\u8ba1\u7b97\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">d_0 = \\sqrt{2 \\times 8493.33 \\times 0.05} + \\sqrt{2 \\times 8493.33 \\times 0.002}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">d_0 = \\sqrt{849.333} + \\sqrt{33.973}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">d_0 \\approx 29.14 + 5.83 = 34.97\\text{ km}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7ed3\u8bba\uff1a<\/strong> \u6b64\u65f6\u7684\u89c6\u7ebf\u8ddd\u79bb d_0 \u7ea6\u4e3a <strong>34.97\\text{ km}<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(3) \u6c42\u7b2c\u4e00\u83f2\u6d85\u5c14\u533a\u534a\u5f84 F_1 \u5e76\u5224\u65ad\u969c\u788d\u7269\u4f4d\u7f6e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">F_1 = \\sqrt{\\frac{\\lambda d_1 d_2}{d_1 + d_2}}<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">3<\/h1>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/image-20260701132743793.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/image-20260701132743793.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20260701132743793\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">(1) \u8ba1\u7b97\u81ea\u7531\u7a7a\u95f4\u635f\u8017 L_{fs}<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8ba1\u7b97\u81ea\u7531\u7a7a\u95f4\u8def\u5f84\u635f\u8017\u7684\u7ecf\u9a8c\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{fs} = 32.44 + 20 \\lg d + 20 \\lg f<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(2) \u8ba1\u7b97\u7b2c\u4e00\u83f2\u6d85\u5c14\u533a\u534a\u5f84 F_1<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e00\u83f2\u6d85\u5c14\u533a\u534a\u5f84\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">F_1 = \\sqrt{\\frac{\\lambda d_1 d_2}{d_1 + d_2}}<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(3) \u6c42\u603b\u4f20\u64ad\u635f\u8017 L<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u603b\u4f20\u64ad\u635f\u8017\u7b49\u4e8e\u81ea\u7531\u7a7a\u95f4\u635f\u8017\u52a0\u4e0a\u56e0\u969c\u788d\u7269\u5f15\u8d77\u7684\u9644\u52a0\u7ed5\u5c04\u635f\u8017\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L = L_{fs} + L_d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5df2\u77e5\u6761\u4ef6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7531\u7b2c (1) \u95ee\u5f97\u51fa L_{fs} \\approx 102.54\\text{ dB}<\/li>\n\n\n\n<li>\u9898\u76ee\u5df2\u77e5\u7ed5\u5c04\u635f\u8017 L_d = 6\\text{ dB}<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u5165\u8ba1\u7b97\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L = 102.54 + 6 = 108.54<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">4<\/h1>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/image-20260701134213913.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/image-20260701134213913.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20260701134213913\"\/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">(1) \u8ba1\u7b97\u7b2c\u4e00\u83f2\u6d85\u5c14\u533a\u534a\u5f84 F_1 (\u5355\u4f4d\uff1a\\text{m})<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e00\u83f2\u6d85\u5c14\u533a\u534a\u5f84\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">F_1 = \\sqrt{\\frac{\\lambda d_1 d_2}{d_1 + d_2}}<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(2) \u6c42\u4f59\u9699 x \u53ca\u5176\u4e0e F_1 \u7684\u6bd4\u503c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9898\u76ee\u7ed9\u51fa\u4e86\u5927\u6c14\u6298\u5c04\u91c7\u7528\u7b49\u6548\u5730\u7403\u534a\u5f84 R_e = 8500\\text{ km}\uff0c\u56e0\u6b64\u5728\u8ba1\u7b97\u6709\u6548\u4f59\u9699 x \u65f6\uff0c\u5fc5\u987b\u8003\u8651\u5730\u7403\u66f2\u7387\u5f15\u8d77\u7684\u201c\u5730\u7403\u51f8\u8d77\u9ad8\u5ea6\u201d\uff08Earth Bulge, \u8bb0\u4e3a \\Delta h\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7b2c\u4e00\u6b65\uff0c\u8ba1\u7b97\u5730\u7403\u51f8\u8d77\u9ad8\u5ea6 \\Delta h\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\\Delta h = \\frac{d_1 d_2}{2 R_e}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>(\u6ce8\uff1a\u4e3a\u65b9\u4fbf\u8ba1\u7b97\uff0c\u6b64\u516c\u5f0f\u4e2d d_1, d_2, R_e \u5747\u5148\u4f7f\u7528 \\text{km}\uff0c\u5f97\u51fa\u7684 \\Delta h \u5355\u4f4d\u4e5f\u662f \\text{km})<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\\Delta h = \\frac{4 \\times 8}{2 \\times 8500} = \\frac{32}{17000}\\text{ km} \\approx 0.001882\\text{ km} = 1.88\\text{ m}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7b2c\u4e8c\u6b65\uff0c\u8ba1\u7b97\u7b49\u6548\u4f59\u9699 x\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6839\u636e\u9898\u76ee\u4e0a\u4e00\u9898\u7684\u60ef\u4f8b\uff08\u6b63\u503c\u8868\u793a\u9ad8\u4e8e\u6536\u53d1\u8fde\u7ebf\/\u906e\u6321\uff0c\u8d1f\u503c\u8868\u793a\u4f4e\u4e8e\u6536\u53d1\u8fde\u7ebf\/\u7a7a\u9699\uff09\u3002\u969c\u788d\u7269\u672c\u8eab\u7269\u7406\u9876\u70b9\u9ad8\u4e8e\u8fde\u7ebf 10\\text{ m}\uff0c\u52a0\u4e0a\u5730\u7403\u51f8\u8d77\u9ad8\u5ea6 \\Delta h\uff0c\u603b\u7684\u7b49\u6548\u906e\u6321\u9ad8\u5ea6 x \u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">x = 10 + \\Delta h = 10 + 1.88 = 11.88\\text{ m}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7b2c\u4e09\u6b65\uff0c\u8ba1\u7b97\u6bd4\u503c x\/F_1\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">x \/ F_1 = \\frac{11.88}{31.62} \\approx 0.376<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u7b54\uff1a<\/strong> \u4f59\u9699 x \u7ea6\u4e3a <strong>11.88\\text{ m}<\/strong>\uff0c\u5176\u4e0e F_1 \u7684\u6bd4\u503c x\/F_1 \u7ea6\u4e3a <strong>0.376<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(3) \u5224\u65ad\u6b64\u65f6\u7ed5\u5c04\u635f\u8017\u662f\u5426\u663e\u8457\uff0c\u5e76\u8bf4\u660e\u7406\u7531<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u7b54\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u65f6\u7684\u7ed5\u5c04\u635f\u8017 <strong>\u975e\u5e38\u663e\u8457<\/strong>\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">5<\/h1>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/E5B18FE5B995E688AAE59BBE202026-07-0120134333.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/E5B18FE5B995E688AAE59BBE202026-07-0120134333.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6839\u636e\u60a8\u63d0\u4f9b\u7684\u56fe\u7247 &#8220;image_b8dec6.png&#8221;\uff0c\u8fd9\u662f\u4e00\u9053\u901a\u8fc7\u94fe\u8def\u9884\u7b97\u53cd\u63a8\u81ea\u7531\u7a7a\u95f4\u6536\u53d1\u8ddd\u79bb\u7684\u8ba1\u7b97\u9898\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u89e3\u7b54\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5df2\u77e5\u6761\u4ef6\u6574\u7406<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u63a5\u6536\u529f\u7387 P_r = -70\\text{ dBm}<\/li>\n\n\n\n<li>\u53d1\u5c04\u529f\u7387 P_t = 10\\text{ W}<\/li>\n\n\n\n<li>\u53d1\u5c04\u5929\u7ebf\u589e\u76ca G_t = 0\\text{ dBi}<\/li>\n\n\n\n<li>\u63a5\u6536\u5929\u7ebf\u589e\u76ca G_r = 2\\text{ dBi}<\/li>\n\n\n\n<li>\u5de5\u4f5c\u9891\u7387 f = 2.4\\text{ GHz}<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u8ba1\u7b97\u6b65\u9aa4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7b2c\u4e00\u6b65\uff1a\u7edf\u4e00\u529f\u7387\u5355\u4f4d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u80fd\u591f\u76f4\u63a5\u4ee3\u5165\u94fe\u8def\u9884\u7b97\u516c\u5f0f\uff0c\u9700\u8981\u5148\u5c06\u53d1\u5c04\u529f\u7387\u4ece\u74e6\u7279\uff08W\uff09\u8f6c\u6362\u4e3a\u5206\u8d1d\u6beb\u74e6\uff08dBm\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5df2\u77e5\u53d1\u5c04\u529f\u7387\u4e3a 10\\text{ W}\uff0c\u5373 10000\\text{ mW}\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f6c\u6362\u516c\u5f0f\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P_{t(dBm)} = 10 \\lg P_{t(mW)}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u5165\u6570\u503c\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P_{t(dBm)} = 10 \\lg(10000) = 10 \\times 4 = 40\\text{ dBm}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7b2c\u4e8c\u6b65\uff1a\u8ba1\u7b97\u81ea\u7531\u7a7a\u95f4\u4f20\u64ad\u635f\u8017 L_{fs}<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6839\u636e\u94fe\u8def\u9884\u7b97\u516c\u5f0f\uff0c\u63a5\u6536\u529f\u7387\u7b49\u4e8e\u53d1\u5c04\u529f\u7387\u52a0\u4e0a\u6536\u53d1\u5929\u7ebf\u589e\u76ca\uff0c\u518d\u51cf\u53bb\u8def\u5f84\u635f\u8017\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P_r = P_t + G_t + G_r &#8211; L_{fs}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c06\u5df2\u77e5\u6570\u636e\u4ee3\u5165\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">-70 = 40 + 0 + 2 &#8211; L_{fs}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">-70 = 42 &#8211; L_{fs}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{fs} = 42 &#8211; (-70) = 112\\text{ dB}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7b2c\u4e09\u6b65\uff1a\u5229\u7528\u81ea\u7531\u7a7a\u95f4\u635f\u8017\u516c\u5f0f\u6c42\u8ddd\u79bb d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u81ea\u7531\u7a7a\u95f4\u8def\u5f84\u635f\u8017\u7684\u5e38\u7528\u5de5\u7a0b\u7ecf\u9a8c\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{fs} = 32.44 + 20 \\lg d + 20 \\lg f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>(\u6ce8\uff1a\u516c\u5f0f\u4e2d\u8ddd\u79bb d \u7684\u5355\u4f4d\u4e3a km\uff0c\u9891\u7387 f \u7684\u5355\u4f4d\u9700\u6362\u7b97\u4e3a MHz)<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c06\u5de5\u4f5c\u9891\u7387 f = 2.4\\text{ GHz} = 2400\\text{ MHz} \u548c\u7b97\u51fa\u7684 L_{fs} = 112\\text{ dB} \u4ee3\u5165\u516c\u5f0f\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">112 = 32.44 + 20 \\lg d + 20 \\lg(2400)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u8ba1\u7b97 20 \\lg(2400)\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">20 \\lg(2400) \\approx 20 \\times 3.38 = 67.6<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u56de\u4e3b\u65b9\u7a0b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">112 = 32.44 + 20 \\lg d + 67.6<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">112 = 100.04 + 20 \\lg d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">20 \\lg d = 112 &#8211; 100.04<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">20 \\lg d = 11.96<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\\lg d = \\frac{11.96}{20} = 0.598<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u540e\u6c42\u53cd\u5bf9\u6570\u5f97\u51fa d\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">d = 10^{0.598} \\approx 3.96\\text{ km}<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">6<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u6839\u636e\u60a8\u63d0\u4f9b\u7684\u56fe\u7247 &#8220;image_b9409e.png&#8221;\uff0c\u8fd9\u662f\u4e00\u9053\u5173\u4e8e\u79fb\u52a8\u901a\u4fe1\u7cfb\u7edf\u4e2d\u5e38\u7528\u8def\u5f84\u635f\u8017\u7ecf\u9a8c\u6a21\u578b\uff08COST 231-Hata \u548c Okumura-Hata\uff09\u7684\u8ba1\u7b97\u5206\u6790\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u89e3\u7b54\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5df2\u77e5\u6761\u4ef6\u6574\u7406<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5de5\u4f5c\u9891\u7387 f = 1800\\text{ MHz}<\/li>\n\n\n\n<li>\u57fa\u7ad9\u5929\u7ebf\u9ad8\u5ea6 h_b = 30\\text{ m}<\/li>\n\n\n\n<li>\u79fb\u52a8\u53f0\u9ad8\u5ea6 h_m = 1.5\\text{ m}<\/li>\n\n\n\n<li>\u901a\u4fe1\u8ddd\u79bb d = 2\\text{ km}<\/li>\n\n\n\n<li>\u73af\u5883\uff1a\u4e2d\u7b49\u57ce\u5e02<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8ba1\u7b97\u8fd9\u4e24\u4e2a\u6a21\u578b\u524d\uff0c\u6211\u4eec\u9700\u8981\u5148\u8ba1\u7b97<strong>\u79fb\u52a8\u53f0\u5929\u7ebf\u9ad8\u5ea6\u4fee\u6b63\u56e0\u5b50 a(h_m)<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u4e2d\u7b49\u57ce\u5e02\uff0c\u4fee\u6b63\u56e0\u5b50\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">a(h_m) = (1.1 \\lg f &#8211; 0.7) h_m &#8211; (1.56 \\lg f &#8211; 0.8)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u5165\u6570\u503c\uff08\u5176\u4e2d \\lg 1800 \\approx 3.255\uff09\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">a(1.5) = (1.1 \\times 3.255 &#8211; 0.7) \\times 1.5 &#8211; (1.56 \\times 3.255 &#8211; 0.8)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">a(1.5) = (2.8805) \\times 1.5 &#8211; (4.2778)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">a(1.5) \\approx 4.321 &#8211; 4.278 = 0.043\\text{ dB}<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(1) \u4f7f\u7528 COST 231-Hata \u6a21\u578b\u8ba1\u7b97\u8def\u5f84\u635f\u8017<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">COST 231-Hata \u6a21\u578b\u9002\u7528\u4e8e 1500\\text{ MHz} \\sim 2000\\text{ MHz} \u9891\u6bb5\uff0c\u5176\u8def\u5f84\u635f\u8017\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{COST} = 46.3 + 33.9 \\lg f &#8211; 13.82 \\lg h_b &#8211; a(h_m) + (44.9 &#8211; 6.55 \\lg h_b) \\lg d + C_M<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u4e2d\u7b49\u57ce\u5e02\uff0c\u73af\u5883\u6821\u6b63\u56e0\u5b50 C_M = 0\\text{ dB}\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u5165\u5df2\u77e5\u6570\u636e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\\lg f = \\lg 1800 \\approx 3.255<\/li>\n\n\n\n<li>\\lg h_b = \\lg 30 \\approx 1.477<\/li>\n\n\n\n<li>\\lg d = \\lg 2 \\approx 0.301<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8ba1\u7b97\u5404\u90e8\u5206\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{COST} = 46.3 + 33.9(3.255) &#8211; 13.82(1.477) &#8211; 0.043 + [44.9 &#8211; 6.55(1.477)] \\times 0.301 + 0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{COST} = 46.3 + 110.34 &#8211; 20.41 &#8211; 0.043 + (44.9 &#8211; 9.67) \\times 0.301<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{COST} = 136.187 + 35.23 \\times 0.301<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{COST} = 136.187 + 10.60 = 146.787\\text{ dB}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u7b54 (1)\uff1a<\/strong> \u4f7f\u7528 COST 231-Hata \u6a21\u578b\u8ba1\u7b97\u7684\u8def\u5f84\u635f\u8017\u7ea6\u4e3a <strong>146.79\\text{ dB}<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(2) \u82e5\u76f8\u540c\u6761\u4ef6\u4e0b\u4f7f\u7528 Okumura-Hata \u6a21\u578b\u8ba1\u7b97\u8def\u5f84\u635f\u8017<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Okumura-Hata \u6a21\u578b\u7684\u6807\u51c6\u5e02\u533a\u8def\u5f84\u635f\u8017\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{Hata} = 69.55 + 26.16 \\lg f &#8211; 13.82 \\lg h_b &#8211; a(h_m) + (44.9 &#8211; 6.55 \\lg h_b) \\lg d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>(\u6ce8\uff1a\u5929\u7ebf\u4fee\u6b63\u56e0\u5b50 a(h_m) \u548c\u8ddd\u79bb\u9879\u4e0e COST 231-Hata \u76f8\u540c)<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u5165\u5df2\u77e5\u6570\u636e\u8ba1\u7b97\u5404\u90e8\u5206\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{Hata} = 69.55 + 26.16(3.255) &#8211; 13.82(1.477) &#8211; 0.043 + 10.60<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{Hata} = 69.55 + 85.15 &#8211; 20.41 &#8211; 0.043 + 10.60<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L_{Hata} = 154.70 &#8211; 20.453 + 10.60 = 144.847\\text{ dB}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u7b54 (2)\uff1a<\/strong> \u4f7f\u7528 Okumura-Hata \u6a21\u578b\uff08\u5916\u63a8\u8ba1\u7b97\uff09\u7684\u8def\u5f84\u635f\u8017\u7ea6\u4e3a <strong>144.85\\text{ dB}<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">(3) \u6bd4\u8f83\u4e24\u79cd\u6a21\u578b\u7684\u5dee\u5f02<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6a21\u578b\u5dee\u5f02\u5206\u6790\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7\u8ba1\u7b97\u53ef\u77e5\uff0cL_{COST} \\approx 146.79\\text{ dB}\uff0cL_{Hata} \\approx 144.85\\text{ dB}\u3002COST 231-Hata \u6a21\u578b\u7684\u8ba1\u7b97\u7ed3\u679c\u6bd4 Okumura-Hata \u6a21\u578b\u9ad8\u51fa\u7ea6 <strong>1.94\\text{ dB}<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5dee\u5f02\u539f\u56e0\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u9002\u7528\u9891\u6bb5\u4e0d\u540c<\/strong>\uff1aOkumura-Hata \u539f\u6a21\u578b\u662f\u57fa\u4e8e\u4f4e\u9891\u6bb5\uff08150\\text{ MHz} \\sim 1500\\text{ MHz}\uff09\u5b9e\u6d4b\u6570\u636e\u62df\u5408\u7684\u3002\u968f\u7740\u9891\u7387\u5347\u9ad8\u81f3 1800 MHz\uff0c\u7a7a\u95f4\u4f20\u64ad\u635f\u8017\u589e\u5927\uff0c\u539f\u516c\u5f0f\u7531\u4e8e\u659c\u7387\u548c\u622a\u8ddd\u7684\u5c40\u9650\u4f1a\u4ea7\u751f<strong>\u4f4e\u4f30<\/strong>\u3002<\/li>\n\n\n\n<li><strong>\u516c\u5f0f\u4fee\u6b63<\/strong>\uff1aCOST 231-Hata \u6a21\u578b\u4e13\u95e8\u9488\u5bf9 PCS\/DCS \u9891\u6bb5\uff081500\\text{ MHz} \\sim 2000\\text{ MHz}\uff09\u8fdb\u884c\u4e86\u516c\u5f0f\u4fee\u6b63\uff0c\u4fee\u6539\u4e86\u5e38\u6570\u9879\uff08\u4ece 69.55 \u6539\u4e3a 46.3\uff09\u548c\u9891\u7387\u76f8\u5173\u7cfb\u6570\uff08\u4ece 26.16 \u589e\u5927\u5230 33.9\uff09\uff0c\u5e76\u5f15\u5165\u4e86\u73af\u5883\u4fee\u6b63\u56e0\u5b50 C_M\u3002\u8fd9\u4f7f\u5f97 COST 231-Hata \u6a21\u578b\u5728\u9ad8\u9891\u6bb5\u80fd\u66f4\u51c6\u786e\u5730\u53cd\u6620\u5b9e\u9645\u4e2d\u66f4\u9ad8\u7684\u8870\u51cf\u7279\u6027\u3002\u5728\u672c\u9898\u7684\u9ad8\u9891 (1800\\text{ MHz}) \u573a\u666f\u4e0b\uff0cCOST 231-Hata \u662f\u66f4\u4e25\u8c28\u548c\u51c6\u786e\u7684\u6a21\u578b\u3002<\/li>\n<\/ol>\n\n\n\n<h1 class=\"wp-block-heading\">\u6982\u5ff5\u9898<\/h1>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/8577efd1a32e071edc61b9d17353809.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/www.millscience.cn\/wp-content\/uploads\/2026\/07\/8577efd1a32e071edc61b9d17353809.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"8577efd1a32e071edc61b9d17353809\"\/><\/div><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">\u7b80\u7b54\uff1a<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b80\u8ff0\u5927\u5c3a\u5ea6\u8870\u843d\u4e0e\u5c0f\u5c3a\u5ea6\u8870\u843d\u7684\u533a\u522b\uff0c\u5e76\u5206\u522b\u8bf4\u660e\u5b83\u4eec\u4e3b\u8981\u7531\u54ea\u4e9b\u56e0\u7d20\u5f15\u8d77\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5927\u5c3a\u5ea6\u8870\u843d\uff1a\u4fe1\u53f7\u5728\u8f83\u957f\u8ddd\u79bb\uff08\u51e0\u5341\u4e2a\u6ce2\u957f\u4ee5\u4e0a\uff09\u6216\u8f83\u5927\u65f6\u95f4\u8303\u56f4\u5185\u7684\u5e73\u5747\u529f\u7387\u53d8\u5316\uff0c\u5305\u62ec\u8def\u5f84\u635f\u8017\u548c\u9634\u5f71\u8870\u843d\u3002\u7531\u6536\u53d1\u8ddd\u79bb\u3001\u5730\u5f62\u5730\u8c8c\u3001\u5efa\u7b51\u7269\u906e\u6321\u7b49\u5f15\u8d77\u3002<\/strong><\/li>\n\n\n\n<li><strong>\u5c0f\u5c3a\u5ea6\u8870\u843d\uff1a\u4fe1\u53f7\u5728\u77ed\u8ddd\u79bb\uff08\u534a\u4e2a\u6ce2\u957f\u91cf\u7ea7\uff09\u6216\u77ed\u65f6\u95f4\u5185\u63a5\u6536\u529f\u7387\u5feb\u901f\u6ce2\u52a8\u7684\u73b0\u8c61\uff0c\u5305\u62ec\u745e\u5229\u8870\u843d\u3001\u83b1\u65af\u8870\u843d\u3001\u9891\u7387\u9009\u62e9\u6027\u8870\u843d\u7b49\u3002\u7531\u591a\u5f84\u4f20\u64ad\u3001\u79fb\u52a8\u53f0\u8fd0\u52a8\uff08\u591a\u666e\u52d2\u6548\u5e94\uff09\u5f15\u8d77\u3002<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u89e3\u91ca\u4ec0\u4e48\u662f\u201c\u9891\u7387\u9009\u62e9\u6027\u8870\u843d\u201d\uff0c\u5b83\u5728\u4ec0\u4e48\u6761\u4ef6\u4e0b\u53d1\u751f\uff1f\u5e76\u5217\u4e3e\u4e24\u79cd\u5bf9\u6297\u8be5\u8870\u843d\u7684\u6280\u672f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u9891\u7387\u9009\u62e9\u6027\u8870\u843d\u662f\u6307\u4fe1\u9053\u7684\u9891\u7387\u54cd\u5e94\u5728\u4fe1\u53f7\u5e26\u5bbd\u5185\u4e0d\u5e73\u5766\uff0c\u4e0d\u540c\u9891\u7387\u5206\u91cf\u7ecf\u5386\u4e0d\u540c\u8870\u51cf\u3002\u5f53\u4fe1\u53f7\u5e26\u5bbd BsBs \u5927\u4e8e\u4fe1\u9053\u76f8\u5e72\u5e26\u5bbd BcBc \u65f6\u53d1\u751f\u3002<\/strong> <strong>\u5bf9\u6297\u6280\u672f\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5747\u8861\u5668\uff08\u5982\u7ebf\u6027\u5747\u8861\u3001\u5224\u51b3\u53cd\u9988\u5747\u8861\u3001MLSE\uff09<\/strong><\/li>\n\n\n\n<li><strong>\u591a\u8f7d\u6ce2\u8c03\u5236\uff08\u5982OFDM\uff09<\/strong><\/li>\n\n\n\n<li><strong>\u6269\u9891\u4e0eRAKE\u63a5\u6536\uff08\u5728CDMA\u4e2d\uff09<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">GSM\u91c7\u53d6\u4e86\u54ea\u51e0\u79cd\u6297\u8870\u843d\u3001\u6297\u5e72\u6270\u7684\u6280\u672f\u63aa\u65bd\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8bed\u97f3\u548c\u4fe1\u9053\u7f16\u7801\u6280\u672f\u3001\u81ea\u9002\u5e94\u5747\u8861\u6280\u672f\u3001\u8c03\u9891\u6280\u672f\u3001\u4ea4\u7ec7\u6280\u672f\u3001\u95f4\u65ad\u4f20\u8f93\u3001\u8bdd\u97f3\u6fc0\u6d3b\u7b49\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3G\u7cfb\u7edf\u7684\u7ec4\u6210\u5206\u54ea\u51e0\u90e8\u5206\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7528\u6237\u8bbe\u5907\uff08UE\uff09\u3001\u65e0\u7ebf\u63a5\u5165\u7f51\uff08UMTS\uff09\u3001\u6838\u5fc3\u7f51\uff08CN\uff09\u3001CS\u57df\u3001PS\u57df\u3001\u5171\u4eab\u7f51\u5143HLR\\VLR\\AUC<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p># 5G \u901a\u4fe1\u6280\u672f\u57fa\u7840\u8003\u8bd5\u9898\u76ee \u7b2c\u516d\u7ae0 1. (\u5355\u9009\u9898) \u7b2c\u4e94\u4ee3\u79fb\u52a8\u901a\u4fe1\u7cfb\u7edf\u6700\u9ad8\u901f\u7387\u5c06\u8fbe\u5230( )\u3002 \u6211\u7684\u7b54\u6848\uff1a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-451","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts\/451","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/comments?post=451"}],"version-history":[{"count":1,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts\/451\/revisions"}],"predecessor-version":[{"id":458,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts\/451\/revisions\/458"}],"wp:attachment":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/media?parent=451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/categories?post=451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/tags?post=451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}