{"id":5254,"date":"2022-03-14T15:06:25","date_gmt":"2022-03-14T07:06:25","guid":{"rendered":"http:\/\/www.comtest.cn\/?p=5254"},"modified":"2022-03-14T15:06:29","modified_gmt":"2022-03-14T07:06:29","slug":"%e5%ae%9a%e6%97%b6%e5%92%8c%e5%90%8c%e6%ad%a5","status":"publish","type":"post","link":"http:\/\/www.comtest.cn\/?p=5254","title":{"rendered":"\u5b9a\u65f6\u548c\u540c\u6b65"},"content":{"rendered":"<p>\u5168\u7403\u5b9a\u4f4d\u7cfb\u7edf (GPS) \u4e3a\u65e0\u7ebf\u7f51\u7edc\u63d0\u4f9b\u7cbe\u786e\u7684\u5b9a\u65f6\u57fa\u51c6\u30025G \u6280\u672f\u548c\u7269\u8054\u7f51\u6b63\u5728\u5c06\u65f6\u95f4\u3001\u76f8\u4f4d\u548c\u9891\u7387\u540c\u6b65\u8981\u6c42\u63a8\u5411\u6280\u672f\u6781\u9650\u3002VIAVI \u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u76f4\u89c2\u7684\u3001\u652f\u6301\u4e91\u7684\u9a8c\u8bc1\u548c\u6d4b\u8bd5\u89e3\u51b3\u65b9\u6848\uff0c\u4ee5\u5e94\u5bf9\u8fd9\u4e9b\u6311\u6218\uff0c\u5e76\u786e\u4fdd\u7b26\u5408\u4e25\u683c\u7684\u884c\u4e1a\u6807\u51c6\u3002<\/p><h1 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u5b9a\u65f6\u548c\u540c\u6b65\uff1f<\/h1><div class=\"wp-block-image is-style-default\"><figure class=\"aligncenter size-large is-resized\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_01.png\"><img fetchpriority=\"high\" decoding=\"async\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_01-1024x835.png\" alt=\"\" class=\"wp-image-5258\" width=\"512\" height=\"418\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_01-1024x835.png 1024w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_01-300x245.png 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_01-768x626.png 768w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_01-1536x1252.png 1536w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_01-600x489.png 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_01-64x52.png 64w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_01.png 1600w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/><\/a><\/figure><\/div><p>\u5b9a\u65f6\u548c\u540c\u6b65\u662f\u65e0\u7ebf\u7f51\u7edc\u6027\u80fd\u7684\u76f8\u5173\u8981\u6c42\u3002\u00a0\u4e3a\u4e86\u5b9e\u73b0\u5b9a\u65f6\u00a0\uff0c\u5fc5\u987b\u5148\u5efa\u7acb\u7cbe\u786e\u7684\u6807\u51c6\u5316\u65f6\u95f4\u503c\uff0c\u8be5\u503c\u5fc5\u987b\u5728\u6574\u4e2a\u65e0\u7ebf\u7f51\u7edc\u4e2d\u4f20\u64ad\u3002\u00a0\u5bc6\u5207\u76f8\u5173\u7684\u540c\u6b65\u6982\u5ff5\u6307\u7684\u662f\u7f51\u7edc\u6d3b\u52a8\u7684\u534f\u8c03\u3001\u7cbe\u786e\u8282\u594f\uff0c\u8fd9\u4e9b\u6d3b\u52a8\u53ea\u6709\u5728\u00a0\u8fd9\u4e2a\u5171\u540c\u7684\u65f6\u95f4\u57fa\u51c6\u4e0b\u624d\u80fd\u6210\u529f\u5b8c\u6210\u3002\u00a0<\/p><p>\u79fb\u52a8\u7f51\u7edc\u7684\u5b9a\u65f6\u548c\u540c\u6b65\u6807\u51c6\u53ef\u9632\u6b62\u6d88\u606f\u76f8\u4e92\u5e72\u6270\uff0c\u5e76\u5b9e\u73b0\u5e73\u6ed1\u7684\u5c0f\u533a\u95f4\u4f20\u8f93\u30025G&nbsp;\u7684\u5b9a\u65f6\u548c\u540c\u6b65\u8981\u6c42\u8d8a\u6765\u8d8a\u4e25\u683c\uff0c\u8fd9\u662f\u7531\u6210\u500d\u63d0\u9ad8\u7684\u901f\u5ea6\u3001\u66f4\u4f4e\u7684\u5ef6\u8fdf\u548c\u66f4\u9ad8\u7684\u5bc6\u5ea6\u63a8\u52a8\u7684\u3002\u5411\u57fa\u4e8e\u5206\u7ec4\u7684\u4f20\u8f93\u548c\u65f6\u5206\u53cc\u5de5 (TDD)&nbsp;\u6280\u672f\u7684\u6301\u7eed\u8fc1\u79fb\u4e5f\u8981\u6c42\u5b9a\u65f6\u548c\u540c\u6b65\u6d4b\u8bd5\u89e3\u51b3\u65b9\u6848\u7684\u7cbe\u786e\u6027\u548c\u591a\u529f\u80fd\u6027\u3002<\/p><h1 class=\"wp-block-heading\">\u5b9a\u65f6\u548c\u540c\u6b65\u7684\u91cd\u8981\u6027<\/h1><p>\u6e90\u81ea\u5168\u7403\u7f51\u7edc\u536b\u661f\u7cfb\u7edf (GNSS) \u661f\u5ea7\u7684\u5b9a\u65f6\u5728\u65e0\u7ebf\u7f51\u7edc\u8fd0\u8425\u4e2d\u53d1\u6325\u7740\u4e3e\u8db3\u8f7b\u91cd\u7684\u4f5c\u7528\u3002\u6ca1\u6709\u8fd9\u79cd\u4e00\u81f4\u800c\u53ef\u9760\u7684\u65f6\u95f4\u6807\u51c6\uff0c\u5c31\u4e0d\u53ef\u80fd\u5b9e\u73b0\u9ad8\u6548\u7684\u9891\u8c31\u5229\u7528\u548c\u9ad8\u901f\u3001\u9ad8\u5e26\u5bbd\u7684\u65e0\u7ebf\u670d\u52a1\u3002<\/p><ul class=\"wp-block-list\"><li>\u540c\u6b65\u6280\u672f\u662f\u6240\u6709\u65e0\u7ebf\u901a\u4fe1\u7f51\u7edc\u7684\u57fa\u672c\u6784\u4ef6\u3002\u53cc\u5de5\u3001\u591a\u8def\u590d\u7528\u548c\u57fa\u4e8e\u5206\u7ec4\u7684\u7b56\u7565\u90fd\u4e25\u91cd\u4f9d\u8d56\u5b9a\u65f6\u548c\u540c\u6b65\u6765\u534f\u8c03\u6570\u636e\u4f20\u8f93\u3001\u9632\u6b62\u5e72\u6270\u3001\u964d\u4f4e\u9519\u8bef\u7387\u4ee5\u53ca\u8865\u507f\u4efb\u4f55\u9891\u7387\u6216\u76f8\u79fb\u3002\u00a0<ul><li><strong>\u9891\u7387\u540c\u6b65<\/strong>\u63cf\u8ff0\u4e86\u4e0d\u540c\u7cfb\u7edf\u65f6\u949f\u7684\u9891\u7387\uff08\u91cd\u590d\u95f4\u9694\uff09\u5bf9\u9f50\uff0c\u4f46\u76f8\u4f4d\u548c\u65f6\u95f4\u4e0d\u5bf9\u9f50\u7684\u72b6\u6001\u3002<img decoding=\"async\" width=\"700\" height=\"169\" class=\"wp-image-5263\" style=\"width: 700px;\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/frequency.jpg\" alt=\"\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/frequency.jpg 700w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/frequency-300x72.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/frequency-600x145.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/frequency-64x15.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/li><\/ul><ul><li><strong>\u76f8\u4f4d\u540c\u6b65<\/strong>\uff0c\u5f53\u65f6\u949f\u76f8\u5bf9\u4e8e\u9891\u7387\u548c\u76f8\u4f4d\u5bf9\u9f50\uff0c\u4f46\u7f3a\u5c11\u5171\u540c\u7684\u65f6\u95f4\u539f\u70b9\u65f6\uff0c\u5c31\u5b9e\u73b0\u4e86\u76f8\u4f4d\u540c\u6b65\u3002\u00a0<img decoding=\"async\" width=\"700\" height=\"173\" class=\"wp-image-5265\" style=\"width: 700px;\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/phase.jpg\" alt=\"\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/phase.jpg 700w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/phase-300x74.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/phase-600x148.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/phase-64x16.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/li><\/ul><ul><li><strong>\u65f6\u95f4\u540c\u6b65<\/strong>\u662f\u6307\u65f6\u949f\u5728\u9891\u7387\u548c\u76f8\u4f4d\u4e0a\u4e0e\u5171\u540c\u7684\u65f6\u95f4\u539f\u70b9\uff08\u5982\u534f\u8c03\u4e16\u754c\u65f6 (<a href=\"https:\/\/www.timeanddate.com\/worldclock\/timezone\/utc\">UTC<\/a>)\uff09\u5bf9\u9f50\u7684\u72b6\u6001\u3002<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"203\" class=\"wp-image-5266\" style=\"width: 700px;\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time.jpg\" alt=\"\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time.jpg 700w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-300x87.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-600x174.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-64x19.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/li><\/ul><\/li><li>5G RAN \u5206\u89e3\u5c06\u4f20\u7edf\u7684\u57fa\u5e26\u5355\u5143 (BBU) \u5206\u4e3a\u914d\u7f6e\u66f4\u7075\u6d3b\u7684\u96c6\u4e2d\u5f0f\u5355\u5143 (CU) \u548c\u5206\u5e03\u5f0f\u5355\u5143 (DU)\u3002\u9700\u8981\u4e25\u683c\u7ef4\u62a4\u8fd9\u4e9b\u5143\u4ef6\u4e4b\u95f4\u7684\u7edd\u5bf9\u548c\u76f8\u5bf9\u5b9a\u65f6\uff0c\u4ee5\u6ee1\u8db3\u82db\u523b\u7684 5G \u7528\u4f8b\u8981\u6c42\u3002\u5c3d\u7ba1\u7ec4\u4ef6\u4e4b\u95f4\u5b58\u5728\u7269\u7406\u8ddd\u79bb\uff0c\u4f46\u524d\u4f20\u7f51\u7edc\u7684\u540c\u6b65\u786e\u4fdd\u4e86 RAN \u7684\u548c\u8c10\u8fd0\u884c\u3002\u00a0<\/li><\/ul><h1 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u65f6\u5206\u53cc\u5de5 (TDD)\uff1f&nbsp;<\/h1><p>\u53cc\u5de5\u901a\u4fe1\u88ab\u5b9a\u4e49\u4e3a\u901a\u4fe1\u4fe1\u9053\u4e0a\u7684\u53cc\u5411\u4f20\u8f93\u3002\u65f6\u5206\u53cc\u5de5 (TDD) \u901a\u8fc7\u5728\u540c\u4e00\u9891\u7387\u4e0a\u4e3a\u4e0a\u884c\u94fe\u8def\u548c\u4e0b\u884c\u94fe\u8def\u4fe1\u53f7\u5206\u914d\u4e0d\u540c\u7684\u65f6\u9699\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002\u8fd9\u79cd\u5de7\u5999\u7684\u65b9\u6cd5\u5141\u8bb8\u5728\u534a\u53cc\u5de5\uff08\u4e32\u884c-\u4e8c\u8fdb\u5236\uff09\u901a\u4fe1\u94fe\u8def\u4e0a\u6a21\u62df\u5168\u53cc\u5de5\uff08\u540c\u65f6\uff09\u901a\u4fe1\u4fe1\u9053\u3002&nbsp;&nbsp;<\/p><ul class=\"wp-block-list\"><li>\u65f6\u5206\u53cc\u5de5\u65e0\u7ebf\u662f\u5168\u7403\u00a05G \u90e8\u7f72\u7684\u57fa\u7840\u6280\u672f\u3002\u5de5\u4f5c\u5728\u540c\u4e00\u9891\u8c31\u4e0a\u7684\u4e0a\u884c\u94fe\u8def (UL) \u548c\u4e0b\u884c\u94fe\u8def (DL) \u4fe1\u53f7\u63d0\u9ad8\u4e86\u9891\u8c31\u6548\u7387\u3002\u65f6\u5206\u53cc\u5de5\u7684\u4f18\u70b9\u88ab\u9632\u6b62\u5c0f\u533a\u5185\u6216\u5c0f\u533a\u95f4\u5e72\u6270\u6240\u9700\u7684\u7cbe\u786e\u5b9a\u65f6\u548c\u540c\u6b65\u6240\u62b5\u6d88\u3002TDD \u8981\u6c42\u9891\u7387\u548c\u76f8\u4f4d\u90fd\u540c\u6b65\u3002\u00a0<\/li><li>5G \u7684 TDD \u65f6\u9699\u683c\u5f0f\u5c06\u6570\u636e\u5185\u5bb9\u5206\u6210\u4e00\u7cfb\u5217 10 \u6beb\u79d2\u65e0\u7ebf\u7535\u5e27\uff0c\u6bcf\u4e2a\u5e27\u5305\u542b 10 \u4e2a 1 \u6beb\u79d2\u5b50\u5e27\u30023GPP TS 38.213\u00a0\u7b2c 15 \u7248\u4e2d\u5305\u542b\u7684 56 \u79cd\u53ef\u7528\u7684\u5e27\u548c\u65f6\u9699\u914d\u7f6e\u9002\u5e94\u4e86\u5e7f\u6cdb\u7684 5G \u7528\u4f8b\u548c\u6d41\u91cf\u6a21\u5f0f\u3002\u4e00\u4e9b\u9009\u9879\u5305\u62ec\u76f8\u7b49\u7684 UL\/DL \u65f6\u95f4\uff0c\u800c\u5176\u4ed6\u9009\u9879\u5219\u8f83\u4e3a\u4e0d\u5bf9\u79f0\u30025G TDD \u65f6\u9699\u683c\u5f0f\u7684\u53d8\u5316\u8fdb\u4e00\u6b65\u589e\u52a0\u4e86\u4ea4\u53c9\u94fe\u8def\u5e72\u6270\u7684\u53ef\u80fd\u6027\u3002\u4e3a\u4e86\u9632\u6b62\u8fd9\u79cd\u60c5\u51b5\uff0c\u76f8\u90bb\u7f51\u7edc\u4e4b\u95f4\u7684\u5e27\u548c\u65f6\u9699\u7ed3\u6784\u4e5f\u5fc5\u987b\u540c\u6b65\u3002<img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"360\" class=\"wp-image-5267\" style=\"width: 500px;\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_03.png\" alt=\"\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_03.png 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_03-300x216.png 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_03-64x46.png 64w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><em>\u5177\u6709\u975e\u540c\u6b65\u65f6\u9699\u683c\u5f0f\u7684\u4e24\u4e2a\u7f51\u7edc<\/em><\/li><li>\u9891\u5206\u53cc\u5de5\u00a0(FDD) \u662f\u4e00\u79cd\u65e9\u4e8e TDD \u7684\u5168\u53cc\u5de5\u7535\u4fe1\u65b9\u6cd5\uff0c\u9700\u8981\u4e24\u4e2a\u72ec\u7acb\u7684\u901a\u4fe1\u4fe1\u9053\u3002\u4efb\u4f55\u5173\u4e8e 5G FDD \u4e0e TDD \u7684\u8ba8\u8bba\u901a\u5e38\u90fd\u5305\u62ec FDD \u6280\u672f\u6d88\u8017\u7684\u8f83\u5927\u90e8\u5206\u9891\u8c31\u3002FDD \u53d1\u9001\u4fe1\u9053\u548c\u63a5\u6536\u4fe1\u9053\u4e4b\u95f4\u8fd8\u9700\u8981\u4fdd\u62a4\u9891\u5e26\uff0c\u4ee5\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11\u5e72\u6270\u3002\u5c3d\u7ba1 FDD \u5728\u5b9a\u65f6\u548c\u540c\u6b65\u8981\u6c42\u65b9\u9762\u66f4\u5bbd\u5bb9\uff0c\u4f46\u4e0e MIMO\u3001\u6ce2\u675f\u6210\u5f62\u548c C \u6ce2\u6bb5\u9891\u8c31\u7684\u517c\u5bb9\u6027\u662f\u6709\u5229\u4e8e TDD \u548c FDD 5G \u7684\u989d\u5916\u56e0\u7d20\u3002<\/li><\/ul><h1 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u7cbe\u786e\u65f6\u95f4\u534f\u8bae\uff1f &nbsp;&nbsp;<\/h1><p>IEEE 1588&nbsp;\u6807\u51c6\u5b9a\u4e49\u7684\u7cbe\u786e\u65f6\u95f4\u534f\u8bae (PTP) \u4e3a\u57fa\u4e8e\u5206\u7ec4\u7684\u7f51\u7edc\u5efa\u7acb\u4e86\u4e00\u79cd\u7cbe\u786e\u65f6\u949f\u540c\u6b65\u5230\u4e9a\u5fae\u7c73\u8303\u56f4\u7684\u65b9\u6cd5\u3002\u8fd9\u5305\u62ec\u57fa\u4e8e\u4ee5\u592a\u7f51\u7684 5G \u4e2d\u4f20\u548c\u524d\u4f20\u7f51\u7edc\u30022008 \u5e74\u53d1\u5e03\u7684 PTP \u7248\u672c 2 (1588v2) \u63d0\u9ad8\u4e86\u534f\u8bae\u7684\u51c6\u786e\u6027\u3001\u7cbe\u786e\u6027\u548c\u7a33\u5065\u6027\u3002&nbsp;<\/p><ul class=\"wp-block-list\"><li>PTP \u57fa\u7840\u8bbe\u65bd\u5305\u62ec\u4e00\u4e2a\u76f4\u63a5\u540c\u6b65\u5230 GPS \u536b\u661f\u4fe1\u53f7\u6e90\u7684\u4e3b\u65f6\u949f\uff0c\u8be5\u536b\u661f\u4fe1\u53f7\u6e90\u6839\u636e UTC \u4f20\u9012\u7edd\u5bf9\u65f6\u95f4\u3002\u6b64\u4fe1\u606f\u4f7f\u7528\u8fb9\u754c\u65f6\u949f\u548c\u4ece\u5c5e\u65f6\u949f\u7684\u7ec4\u5408\u5206\u6563\u5728\u6574\u4e2a\u7f51\u7edc\u4e2d\u3002\u786e\u4fdd\u7f51\u7edc\u4e2d\u7684\u6240\u6709\u65e0\u7ebf\u7535\u5355\u5143\u4e0e\u516c\u5171\u65f6\u95f4\u548c\u76f8\u4f4d\u57fa\u51c6\u540c\u6b65\uff0c\u4f7f\u8c03\u5ea6\u5668\u80fd\u591f\u5c06\u6f5c\u5728\u5e72\u6270\u964d\u81f3\u6700\u4f4e\u3002&nbsp;<\/li><li>RAN \u8054\u76df\u5efa\u8bae\u5728\u4e00\u4e2a\u4e3b\u65f6\u949f\u548c\u4efb\u4f55\u7aef\u70b9\u4e4b\u95f4\u7a7f\u8d8a\u7684\u8fb9\u754c\u65f6\u949f\u4e0d\u8d85\u8fc7\u4e24\u4e2a\u3002\u4f46\u662f\uff0c\u5bf9\u7a7f\u8d8a\u7684\u603b\u8ddd\u79bb\u6ca1\u6709\u65e2\u5b9a\u7684\u9650\u5236\u3002&nbsp;<\/li><li>\u4ee5\u592a\u7f51\u4e0a\u7684 PTP&nbsp;\u6b63\u5728\u53d6\u4ee3 GPS\uff0c\u6210\u4e3a&nbsp;5G \u524d\u4f20\u7f51\u7edc\u7684\u4e3b\u8981\u5b9a\u65f6\u6e90\u3002\u867d\u7136\u4ee5\u592a\u7f51\u672c\u8d28\u4e0a\u4e0d\u662f\u540c\u6b65\u7684\uff0c\u4f46\u662f\u53ef\u4ee5\u4f7f\u7528 PTP \u548c\u540c\u6b65\u4ee5\u592a\u7f51 (SyncE) \u5728\u4ee5\u592a\u7f51\u5c42\u4e0a\u5206\u53d1\u5b9a\u65f6\u548c\u9891\u7387\u4fe1\u606f\u3002\u8fd9\u5141\u8bb8\u5229\u7528\u73b0\u6709\u7684\u4ee5\u592a\u7f51\u5e03\u7ebf\u6765\u540c\u6b65\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u7684\u65f6\u949f\u3002&nbsp;<\/li><\/ul><h1 class=\"wp-block-heading\">5G \u5b9a\u65f6\u548c\u540c\u6b65\u8981\u6c42 &nbsp;<\/h1><p>\u5f53 5G \u7f51\u7edc\u8282\u70b9\u4e0d\u540c\u6b65\u65f6\uff0c\u63a5\u6536\u5230\u7684\u4fe1\u53f7\u65e0\u6cd5\u6b63\u786e\u89e3\u8c03\u3002\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5f71\u54cd\u5ba2\u6237\u4f53\u9a8c\u7684\u9ad8\u8bef\u7801\u7387\u3001\u5ef6\u8fdf\u548c\u6296\u52a8\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5305\u62ec 3GPP \u548c ITU-T&nbsp; \u5728\u5185\u7684\u591a\u4e2a\u6807\u51c6\u673a\u6784\u73b0\u5df2\u5efa\u7acb\u4e86\u540c\u6b65\u8981\u6c42\u3002<\/p><ul class=\"wp-block-list\"><li>\u6839\u636e\u901a\u4fe1\u7cfb\u7edf\u7684\u4e0d\u540c\uff0c\u540c\u6b65\u5b9a\u4e49\u548c\u8fc7\u7a0b\u4f1a\u6709\u6240\u4e0d\u540c\u3002\u5bf9\u4e8e TDD \u548c FDD 5G\uff0c\u8f7d\u6ce2\u548c\u5b9a\u65f6\u7cbe\u5ea6\u8981\u6c42\u53d8\u5f97\u66f4\u52a0\u4e25\u683c\u3002\u5bf9\u4e8e\u6bcf\u4e2a\u7528\u4f8b\uff0c\u540c\u6b65\u3001\u7c7b\u578b\u3001\u9700\u6c42\u4ee5\u53ca\u4e0d\u7b26\u5408\u6027\u5bf9\u6027\u80fd\u7684\u5f71\u54cd\u4e5f\u5927\u76f8\u5f84\u5ead\u3002&nbsp;<\/li><li>\u65f6\u95f4\u8bef\u5dee (TE)&nbsp;\u5b9a\u4e49\u4e3a\u4efb\u610f\u4e24\u4e2a\u8282\u70b9\u65f6\u949f\u4e4b\u95f4\u7684\u65f6\u95f4\u5dee\u3002\u5bf9\u4e8e LTE\/5G TDD\uff0c\u4e3b\u65f6\u95f4\u57fa\u51c6\u548c\u4efb\u4f55\u8282\u70b9\u4e4b\u95f4\u7684\u7edd\u5bf9\u65f6\u95f4\u8bef\u5dee\u9650\u5236\u5728\u6781\u77ed\u7684 1.5 \u5fae\u79d2\u5185\u3002\u8fd9\u5305\u62ec\u63a5\u5165\u70b9\u7684 1.1 \u5fae\u79d2\u7edd\u5bf9\u65f6\u95f4\u8bef\u5dee\u548c\u65e0\u7ebf\u7535\u524d\u4f20\u94fe\u8def\u7684 0.4 \u5fae\u79d2\u7edd\u5bf9\u65f6\u95f4\u8bef\u5dee\u3002&nbsp;<\/li><li>\u76f8\u5bf9\u65f6\u95f4\u8bef\u5dee\u662f\u4e24\u4e2a\u65e0\u7ebf\u7535\u5355\u5143\u7684\u8f93\u5165\u4e4b\u95f4\u7684\u65f6\u95f4\u5dee\u3002\u76f8\u5bf9 TE \u662f\u8f7d\u6ce2\u805a\u5408\u548c\u5927\u89c4\u6a21 MIMO \u7b49\u9ad8\u7ea7 5G \u529f\u80fd\u7684\u91cd\u8981\u6307\u6807\u3002\u7528\u4e8e\u534f\u8c03\u53bb\u5f80\u548c\u6765\u81ea\u591a\u4e2a\u8702\u7a9d\u57fa\u7ad9\u7684\u4fe1\u53f7\u7684\u534f\u8c03\u591a\u70b9 (CoMP) \u4e0d\u80fd\u5bb9\u5fcd\u5927\u4e8e 1.0 \u5fae\u79d2\u7684\u76f8\u5bf9\u65f6\u95f4\u8bef\u5dee\u3002<\/li><\/ul><figure class=\"wp-block-table\"><table><thead><tr><td>\u7528\u4f8b<\/td><td>\u540c\u6b65\u7c7b\u578b<\/td><td>\u540c\u6b65\u8981\u6c42<\/td><td>\u5408\u89c4\u7684\u5fc5\u8981\u6027<\/td><td>\u4e0d\u5408\u89c4\u7684\u5f71\u54cd<\/td><\/tr><\/thead><tbody><tr><td>LTE\/5G-NR FDD<\/td><td>\u9891\u7387<\/td><td>50 PPB\uff08\u7edd\u5bf9\uff09<\/td><td>\u53ef\u53ca\u6027\u548c\u53ef\u4fdd\u7559\u6027<\/td><td>\u5e72\u6270\u548c\u9ad8\u4e22\u5f03\u8fde\u63a5<\/td><\/tr><tr><td>LTE\/5G-NR FDD<\/td><td>\u65f6\u95f4<\/td><td>~10\u5fae\u79d2\uff08\u7edd\u5bf9\uff09<\/td><td>\u65f6\u9699\u5bf9\u9f50<\/td><td>\u4e22\u5305\u51b2\u7a81\u3001\u6027\u80fd\u4e0b\u964d<\/td><\/tr><tr><td>LTE\/5G-NR\/eMBMS\/\u8f7d\u6ce2\u805a\u5408<\/td><td>\u65f6\u95f4<\/td><td>~3-5\u5fae\u79d2\uff08\u7edd\u5bf9\uff09<\/td><td>\u7528\u4e8e\u89c6\u9891\u89e3\u7801\u548c\u8f7d\u6ce2\u805a\u5408\u7684\u591a\u4e2a\u8f7d\u6ce2\u548c\u5c0f\u533a\u4e4b\u95f4\u7684\u65f6\u95f4\u5bf9\u51c6<\/td><td>\u89c6\u9891\u8d28\u91cf\u5dee\uff0cCA \u5931\u8d25\uff0c\u541e\u5410\u91cf\u4f4e<\/td><\/tr><tr><td>LTE\/5G-NR TDD\/eCIC<\/td><td>\u65f6\u95f4<\/td><td>~1-5 \u79d2\uff08\u7edd\u5bf9\uff09<\/td><td>\u5e72\u6270\u7ba1\u7406\/\u5e72\u6270\u534f\u8c03<\/td><td>\u7f51\u7edc\u5e72\u6270\u3001\u5bb9\u91cf\u51cf\u5c11\u3001\u6027\u80fd\u4e0d\u4f73<\/td><\/tr><tr><td>LTE\/5G-NR CoMP\/LBS<\/td><td>\u65f6\u95f4<\/td><td>&lt;1&nbsp;\u5fae\u79d2\u76f8\u5bf9OTA \u6d4b\u91cf<\/td><td>\u8fdb\u51fa\u8702\u7a9d\u57fa\u7ad9\u7684\u4fe1\u53f7\u534f\u8c03<\/td><td>LBS \u7cbe\u5ea6\u3001\u9891\u8c31\u6548\u7387<\/td><\/tr><tr><td>LTE\/5G-NR TDD<\/td><td>\u5e27<\/td><td>\u53d6\u51b3\u4e8e\u76f8\u90bb\u7684 TDD \u7f51\u7edc\uff08LTE \u4e0e 5G\uff09<\/td><td>\u4e0e\u76f8\u90bb LTE \u6216 5G \u7f51\u7edc\u534f\u8c03<\/td><td>\u7f51\u7edc\u5e72\u6270\u3001\u5bb9\u91cf\u51cf\u5c11\u3001\u6027\u80fd\u4e0d\u4f73<\/td><\/tr><\/tbody><\/table><\/figure><h1 class=\"wp-block-heading\">5G &nbsp;\u65f6\u949f\u540c\u6b65\u9762\u4e34\u7684\u6311\u6218&nbsp;<\/h1><p>RAN \u89e3\u805a\u3001TDD \u4ee5\u53ca MIMO\u3001\u6ce2\u675f\u6210\u5f62\u548c\u6beb\u7c73\u6ce2\u6280\u672f\u7684\u91c7\u7528\u4f7f 5G \u65e0\u7ebf\u7684\u5168\u90e8\u6f5c\u529b\u5f97\u4ee5\u5b9e\u73b0\u3002\u8fd9\u4e9b\u521b\u65b0\u7ed3\u5408\u5728\u4e00\u8d77\uff0c\u4e5f\u5c06 5G \u7684\u5b9a\u65f6\u548c\u540c\u6b65\u8981\u6c42\u63a8\u5230\u4e86\u524d\u6240\u672a\u6709\u7684\u6c34\u5e73\u3002\u81ea\u52a8\u9a7e\u9a76\u6c7d\u8f66\u548c\u7269\u8054\u7f51\u7b49\u5b9e\u65f6\u5e94\u7528\u6b63\u5728\u6539\u53d8\u5206\u7ec4\u7f51\u7edc\u4e2d\u5b9a\u65f6\u548c\u540c\u6b65\u65b9\u9762\u7684\u590d\u6742\u5c40\u9762\u3002 &nbsp;<\/p><ul class=\"wp-block-list\"><li>\u5c0f\u533a\u95f4\u5e72\u6270\u53ef\u80fd\u662f 5G \u65f6\u5206\u53cc\u5de5\u65e0\u7ebf\u7684\u4e0d\u53d7\u6b22\u8fce\u7684\u526f\u4ea7\u54c1\u3002\u5fc5\u987b\u5728\u5177\u6709\u76f8\u90bb\u9891\u7387\u5206\u914d\u7684\u5e76\u7f6e\u7f51\u7edc\u4e4b\u95f4\u5efa\u7acb\u517c\u5bb9\u7684\u5e27\u7ed3\u6784\u3002\u4f7f\u7528 TDD \u7684\u8f7d\u6ce2\u8fd8\u5fc5\u987b\u907f\u514d\u540c\u65f6\u8fdb\u884c DL \u548c UL \u4f20\u8f93\u3002DL \u4fe1\u53f7\u53ef\u80fd\u4f1a\u6cc4\u6f0f\u5230\u4f7f\u7528 TDD \u548c FDD \u7684\u76f8\u90bb\u4fe1\u9053\u4e2d\u3002LTE \u4fdd\u62a4\u9891\u5e26\u4e0d\u518d\u5b58\u5728\uff0c\u4ee5\u51cf\u5c11\u5f71\u54cd\u3002 &nbsp;<\/li><li>\u536b\u661f\u5929\u7ebf\u91c7\u96c6\u7684&nbsp;GPS \u4fe1\u53f7\u8d28\u91cf\u5fc5\u987b\u9ad8\u5ea6\u53ef\u9760\uff0c\u624d\u80fd\u6ee1\u8db3 5G \u7684\u8981\u6c42\u3002\u4ece\u591a\u4e2a\u4f4d\u7f6e\u8fdb\u884c GPS \u4fe1\u53f7\u5f3a\u5ea6\u9a8c\u8bc1\u548c\u5168\u9762\u5929\u7ebf\u9a8c\u8bc1\u53ef\u4ee5\u5c06\u5e72\u6270\u95ee\u9898\u7684\u53ef\u80fd\u6027\u964d\u81f3\u6700\u4f4e\u30023G \u548c 4G \u7f51\u7edc\u53ea\u9700\u8981\u7ad9\u70b9\u7684\u4e00\u6761\u536b\u661f\u7ebf\u8def\u5373\u53ef\u8fdb\u884c\u540c\u6b65\u30025G \u5c0f\u533a\u7684\u7cbe\u786e\u5b9a\u65f6\u548c\u540c\u6b65\u8981\u6c42\u4f7f\u5f97\u5373\u4f7f\u662f\u6700\u5c0f\u7684\u53d8\u5316\u4e5f\u65e0\u6cd5\u5fcd\u53d7\u3002\u9501\u5b9a 4 \u4e2a\u6216\u66f4\u591a\u536b\u661f\u4f4d\u7f6e\u53ef\u7528\u4e8e\u5c06\u536b\u661f\u4f4d\u7f6e\u7684\u5f71\u54cd\u964d\u81f3\u6700\u4f4e\u3002<\/li><\/ul><div class=\"wp-block-image is-style-default\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_04.png\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"432\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_04.png\" alt=\"\" class=\"wp-image-5268\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_04.png 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_04-300x216.png 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_04-64x46.png 64w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><figcaption><em>\u57fa\u4e8e GPS \u7684\u540c\u6b65<\/em><\/figcaption><\/figure><\/div><h1 class=\"wp-block-heading\">\u6211\u4eec\u53ef\u4ee5\u6d4b\u8bd5\u4ec0\u4e48\uff1f&nbsp;<\/h1><p>\u5e78\u8fd0\u7684\u662f\uff0c\u4f7f\u7528\u5f3a\u5927\u7684 VIAVI \u6d4b\u8bd5\u89e3\u51b3\u65b9\u6848\u5957\u4ef6\uff0c\u53ef\u4ee5\u51c6\u786e\u53ef\u9760\u5730\u9a8c\u8bc1\u6781\u5176\u82db\u523b\u7684\u5b9a\u65f6\u548c\u540c\u6b65\u8981\u6c42\u3002\u91c7\u7528\u4e3b\u52a8\u9a8c\u8bc1\u65b9\u6cd5\u53ef\u4ee5\u9632\u6b62\u6709\u95ee\u9898\u7684\u5e27\u4e22\u5f03\u3001\u5e72\u6270\u548c\u5207\u6362\u95ee\u9898\u3002&nbsp;<\/p><ul class=\"wp-block-list\"><li>\u53ef\u4ee5\u6267\u884c\u00a0PTP \u6d4b\u8bd5\uff0c\u4ee5\u9a8c\u8bc1\u6240\u6709\u7f51\u7edc\u65f6\u949f\u662f\u5426\u90fd\u4e0e\u4e3b\u65f6\u949f\u6b63\u786e\u5bf9\u9f50\uff0c\u5e76\u4e14\u6ee1\u8db3 PTP \u9891\u7387\u5206\u5e03\u9650\u5236\uff0c\u4f8b\u5982\u6700\u4f4e\u5206\u7ec4\u767e\u5206\u6bd4\u3002\u8fd8\u53ef\u4ee5\u5efa\u7acb\u7b26\u5408\u65f6\u95f4\u8bef\u5dee (TE) \u9650\u5236\u7684\u65f6\u95f4\u548c\u76f8\u4f4d\u5206\u5e03\u3002VIAVI\u00a0MTS-5800\u00a0\u901a\u8fc7\u6a21\u62df\u4e3b\u65f6\u949f\u4e0b\u6e38\u7684 PTP \u7aef\u70b9\uff0c\u53ef\u4ee5\u8f7b\u677e\u6d4b\u8bd5\u5b9a\u65f6\u8bef\u5dee\u548c\u8fde\u901a\u6027\u3002\u00a0<\/li><li>\u5e94\u6d4b\u8bd5\u00a05G NR \u5e27\u683c\u5f0f\uff0c\u4ee5\u786e\u5b9a\u76f8\u90bb\u7f51\u7edc\u7b26\u5408\u5546\u5b9a\u7684\u65f6\u9699\u548c\u5e27\u683c\u5f0f\u3002\u4f7f\u7528\u00a0CellAdvisor 5G\u00a0\u7684\u7a7a\u4e2d\u6d4b\u8bd5\u53ef\u7528\u4e8e\u9a8c\u8bc1\u591a\u4e2a\u8fd0\u8425\u5546\u7684 TDD \u5e27\u683c\u5f0f\u3002\u53ef\u4ee5\u9632\u6b62\u6765\u81ea\u65f6\u5206\u53cc\u5de5\u65e0\u7ebf\u7684\u5c0f\u533a\u95f4\u5e72\u6270\u3002<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"277\" class=\"wp-image-5269\" style=\"width: 700px;\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_05.png\" alt=\"\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_05.png 800w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_05-300x119.png 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_05-768x303.png 768w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_05-600x237.png 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2022\/03\/time-synch_05-64x25.png 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/li><li>\u4e5f\u53ef\u4ee5\u4f7f\u7528 MTS-5800 \u8fdb\u884c\u00a0GPS \u6d4b\u8bd5\uff0c\u4ee5\u786e\u5b9a GPS \u5929\u7ebf\u4f4d\u7f6e\u5728\u5b89\u88c5\u671f\u95f4\u548c\u5b89\u88c5\u540e\u7684\u9002\u7528\u6027\u3002\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u76f4\u89c2\u7684\u754c\u9762\u8bc4\u4f30\u53ef\u89c1\u536b\u661f\u7684\u6570\u91cf\u3001\u4fe1\u53f7\u5f3a\u5ea6\u4ee5\u53ca\u8de8\u6247\u533a\u548c\u7ad9\u70b9\u7ebf\u7684\u536b\u661f\u4f4d\u7f6e\u591a\u6837\u6027\u3002<\/li><\/ul><h1 class=\"wp-block-heading\">VIAVI \u7684\u5b9a\u65f6\u548c\u540c\u6b65\u89e3\u51b3\u65b9\u6848 &nbsp;<\/h1><p>VIAVI \u5b9a\u65f6\u548c\u540c\u6b65\u89e3\u51b3\u65b9\u6848\u5177\u6709\u786e\u4fdd\u7b26\u5408\u4e25\u683c\u7684 PTP\/1588v2 \u548c ITU-T \u6807\u51c6\u6240\u9700\u7684\u529f\u80fd\uff0c\u8fd9\u4e9b\u6807\u51c6\u53ef\u4f7f 5G \u548c LTE \u65e0\u7ebf\u7f51\u7edc\u6b63\u5e38\u8fd0\u884c\u3002&nbsp;<\/p><ul class=\"wp-block-list\"><li><strong>CellAdvisor 5G<\/strong>\u00a0\u662f\u4e00\u6b3e\u5148\u8fdb\u7684\u73b0\u573a\u4fbf\u643a\u5f0f\u89e3\u51b3\u65b9\u6848\uff0c\u65e8\u5728\u89e3\u51b3 5G \u9891\u8c31\u5206\u6790\u3001\u8986\u76d6\u9a8c\u8bc1\u548c\u6ce2\u675f\u5206\u6790\u65b9\u9762\u7684\u72ec\u7279\u6311\u6218\u3002\u4f7f\u7528 VIAVI CellAdvisor 5G\uff0c\u5c04\u9891\u5de5\u7a0b\u5e08\u6216\u6280\u672f\u4eba\u5458\u8fd8\u53ef\u4ee5\u9a8c\u8bc1\u7a7a\u4e2d\u9891\u7387\u548c\u65f6\u95f4\u8bef\u5dee\uff0c\u5e76\u786e\u4fdd\u4e0e UTC \u6807\u51c6\u76f8\u6bd4\uff0c\u540c\u6b65\u7b26\u5408 \u00b11.5 \u5fae\u79d2\u7684\u9650\u5236\u3002\u00a0<\/li><li><strong>OneAdvisor-800<\/strong>\u00a0\u5141\u8bb8\u8702\u7a9d\u57fa\u7ad9\u6280\u672f\u4eba\u5458\u901a\u8fc7\u5355\u4e00\u4eea\u5668\u6d4b\u8bd5\u5149\u7ea4\u3001\u5c04\u9891\u548c CPRI\/\u4ee5\u592a\u7f51\u3002\u5b9e\u65f6\u9891\u8c31\u5206\u6790\u63d0\u4f9b\u4e86\u53ef\u9632\u6b62\u5e72\u6270\u6e90\u7684 TDD\u3001LTE \u548c 5G \u8f7d\u6ce2\u7684\u8be6\u7ec6\u8868\u793a\u5f62\u5f0f\u3002MIMO \u9a8c\u8bc1\u548c\u4fe1\u53f7\u5206\u6790\u53ef\u4ee5\u5feb\u901f\u68c0\u6d4b\u5e72\u6270\u8986\u76d6\u8303\u56f4\u548c\u670d\u52a1\u8d28\u91cf\u7684\u969c\u788d\u3002\u00a0<\/li><li><strong>MTS-5800<\/strong>\u00a0\u652f\u6301\u8d2f\u7a7f\u6574\u4e2a\u7f51\u7edc\u670d\u52a1\u751f\u547d\u5468\u671f\u7684 5G \u5b9a\u65f6\u548c\u540c\u6b65\u6d4b\u8bd5\u3002\u9664\u4e86 GPS \u4fe1\u53f7\u9a8c\u8bc1\u548c\u5bf9 PTP \u534f\u8bae\u7684\u65f6\u95f4\u8bef\u5dee\u6d4b\u8bd5\u5916\uff0cMTS-5800 \u8fd8\u53ef\u7528\u4e8e\u9a8c\u8bc1\u540c\u6b65\u6027\u80fd\uff0c\u5e76\u5728\u7f51\u7edc\u4e0a\u6267\u884c\u5355\u5411\u5ef6\u8fdf\u548c PDV\uff08\u5206\u7ec4\u5ef6\u8fdf\uff09\u6d4b\u8bd5\u3002<\/li><\/ul>","protected":false},"excerpt":{"rendered":"<p>\u5168\u7403\u5b9a\u4f4d\u7cfb\u7edf (GPS) \u4e3a\u65e0\u7ebf\u7f51\u7edc\u63d0\u4f9b\u7cbe\u786e\u7684\u5b9a\u65f6\u57fa\u51c6\u30025G \u6280\u672f\u548c\u7269\u8054\u7f51\u6b63\u5728\u5c06\u65f6\u95f4\u3001\u76f8\u4f4d\u548c\u9891\u7387\u540c\u6b65\u8981\u6c42\u63a8\u5411\u6280\u672f\u6781\u9650\u3002VIAVI \u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u76f4\u89c2\u7684\u3001\u652f\u6301\u4e91\u7684\u9a8c\u8bc1\u548c\u6d4b\u8bd5\u89e3\u51b3\u65b9\u6848\uff0c\u4ee5\u5e94\u5bf9\u8fd9\u4e9b\u6311\u6218\uff0c\u5e76\u786e\u4fdd\u7b26\u5408\u4e25\u683c\u7684\u884c\u4e1a\u6807\u51c6\u3002<\/p>\n","protected":false},"author":2,"featured_media":5273,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[],"class_list":["post-5254","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>\u5b9a\u65f6\u548c\u540c\u6b65 - \u901a\u6d4b\u79d1\u6280<\/title>\r\n<meta 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