{"id":4702,"date":"2021-08-09T15:05:53","date_gmt":"2021-08-09T07:05:53","guid":{"rendered":"http:\/\/www.comtest.cn\/?p=4702"},"modified":"2021-08-09T15:06:00","modified_gmt":"2021-08-09T07:06:00","slug":"%e5%89%8d%e4%bc%a0%ef%bc%88fronthaul%ef%bc%89","status":"publish","type":"post","link":"http:\/\/www.comtest.com.cn\/?p=4702","title":{"rendered":"\u524d\u4f20\uff08Fronthaul\uff09"},"content":{"rendered":"<h1 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u524d\u4f20\uff1f<\/h1><p>\u524d\u4f20\u5b9a\u4e49\u4e3a RAN \u57fa\u7840\u8bbe\u65bd\u4e2d\u57fa\u5e26\u5355\u5143 (BBU) \u548c\u8fdc\u7a0b\u65e0\u7ebf\u7535\u5934 (RRH) \u4e4b\u95f4\u57fa\u4e8e\u5149\u7ea4\u7684\u8fde\u63a5\u3002\u524d\u4f20\u6e90\u4e8e LTE \u7f51\u7edc\uff0c\u5f53\u65f6\u8fd0\u8425\u5546\u9996\u6b21\u5c06\u65e0\u7ebf\u7535\u8bbe\u5907\u79fb\u5230\u79bb\u5929\u7ebf\u66f4\u8fd1\u7684\u5730\u65b9\u3002\u8fd9\u4e2a\u65b0\u94fe\u8def\u7684\u5efa\u7acb\u662f\u4e3a\u4e86\u8865\u5145 BBU \u548c\u4e2d\u592e\u7f51\u7edc\u6838\u5fc3\u4e4b\u95f4\u7684\u56de\u4f20\u8fde\u63a5\u3002<\/p><p>\u968f\u7740\u65b0 5G \u5e94\u7528\u6848\u4f8b\u7684\u63a8\u51fa\uff0c\u7075\u6d3b\u7684\u524d\u4f20\u914d\u7f6e\u5df2\u6210\u4e3a\u5e73\u8861\u9ad8\u7ea7 5G \u5e94\u7528\u7684\u5ef6\u8fdf\u3001\u541e\u5410\u91cf\u548c\u53ef\u9760\u6027\u9700\u6c42\u7684\u91cd\u8981\u56e0\u7d20\u3002&nbsp;<\/p><p>\u4e0b\u4e00\u4ee3 RAN \u6b63\u5728\u5bfc\u81f4\u524d\u4f20\u5149\u7ea4\u90e8\u7f72\u7684\u589e\u52a0\uff0c\u4ee5\u53ca\u5bf9\u591a\u8def\u590d\u7528\u3001\u865a\u62df\u5316\u548c\u5206\u79bb\u524d\u4f20\u67b6\u6784\u7684\u66f4\u5927\u4f9d\u8d56\u3002\u8fd9\u4f7f\u5f97 eCPRI \u524d\u4f20\u6210\u4e3a\u8fd0\u8425\u5546\u8c03\u67e5\u4e2d\u6700\u91cd\u8981\u7684 5G \u6280\u672f\u4e4b\u4e00\u3002VIAVI \u4e3a\u524d\u4f20\u6027\u80fd\u6d4b\u8bd5\u63d0\u4f9b\u4e86\u5168\u9762\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u5305\u62ec\u5149\u7ea4\u94fe\u8def\u9a8c\u8bc1\u3001\u540c\u6b65\u548c\u5b9a\u65f6\u6d4b\u8bd5\u529f\u80fd\uff0c\u4ee5\u53ca\u865a\u62df\u548c\u57fa\u4e8e\u4fdd\u969c\u7684\u9009\u9879\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_01_700.jpg\"><img fetchpriority=\"high\" decoding=\"async\" width=\"700\" height=\"309\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_01_700.jpg\" alt=\"\" class=\"wp-image-4705\" srcset=\"http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_01_700.jpg 700w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_01_700-300x132.jpg 300w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_01_700-600x265.jpg 600w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_01_700-64x28.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><h1 class=\"wp-block-heading\">\u524d\u4f20\u7684\u6f14\u53d8<\/h1><p>\u79fb\u52a8\u7f51\u7edc\u4e2d\u524d\u4f20\u7684\u6f14\u53d8\u53cd\u6620\u4e86\u5bbd\u5e26\u7f51\u7edc\u5bf9\u5149\u7ea4\u7684\u4f9d\u8d56\u65e5\u76ca\u589e\u52a0\uff0c\u56e0\u4e3a\u8fd9\u4e24\u4e2a\u9886\u57df\u7684\u5e26\u5bbd\u548c\u5ef6\u8fdf\u9700\u6c42\u7ee7\u7eed\u63a8\u52a8\u5149\u7ea4\u90e8\u7f72\u5411\u66f4\u6df1\u3001\u66f4\u9ad8\u7684\u65b9\u5411\u53d1\u5c55\u3002\u5728 4G \u53d1\u5e03\u4e4b\u524d\uff0c\u5149\u7ea4\u4e3b\u8981\u7528\u4e8e\u4f20\u8f93\u7f51\u7edc\u3002\u66f4\u9ad8\u7684\u6027\u80fd\u6807\u51c6\u3001\u591a\u8f93\u5165\u591a\u8f93\u51fa (MIMO) \u6280\u672f\u7684\u53d1\u5c55\u4ee5\u53ca\u5148\u8fdb\u7684\u65e0\u7ebf\u7535\u534f\u8c03\u5b9e\u8df5\uff0c\u4e0e\u8fdc\u7a0b\u65e0\u7ebf\u7535\u89e3\u51b3\u65b9\u6848\u7684\u51fa\u73b0\u4ee5\u53ca\u5149\u7ea4\u8bcd\u5178\u5f15\u5165\u524d\u4f20\u76f8\u543b\u5408\u3002<\/p><p>\u516c\u5171\u65e0\u7ebf\u7535\u63a5\u53e3 (CPRI) \u534f\u8bae\u6700\u521d\u662f\u7531\u4e00\u4e2a OEM \u8054\u76df\u4e8e 2003 \u5e74\u5efa\u7acb\u7684\uff0c\u65e8\u5728\u5b9a\u4e49\u548c\u6807\u51c6\u5316 BBU \u548c RRH \u4e4b\u95f4\u7684\u4f20\u8f93\u3001\u8fde\u63a5\u548c\u63a7\u5236\u89c4\u8303\u3002CPRI \u57fa\u4e8e BBU \u4e2d\u7684\u534f\u540c\u5b9a\u4f4d\u7269\u7406\u5c42 (PHY)\u3001\u6570\u636e\u94fe\u8def\u5c42\u548c\u7f51\u7edc\u5c42\u67b6\u6784\uff0c\u524d\u4f20\u63d0\u4f9b RRH \u548c BBU PHY \u5c42\u4e4b\u95f4\u7684\u94fe\u8def\u3002CPRI \u4e25\u683c\u7684\u5ef6\u8fdf\u9884\u7b97\u9650\u5236\u4e86 BBU \u548c RRH \u4f4d\u7f6e\u4e4b\u95f4\u7684\u7269\u7406\u5206\u79bb\u3002<\/p><p>CPRI \u4f7f\u7528\u540c\u6b65\u6570\u636e\u4f20\u8f93\u534f\u8bae\uff0c\u5176\u6bd4\u7279\u7387\u53d6\u51b3\u4e8e\u5929\u7ebf\u6570\u91cf\uff0c\u56e0\u6b64\u4f20\u8f93\u901f\u7387\u4e0d\u4f1a\u968f\u7740\u7528\u6237\u8d1f\u8f7d\u7684\u53d8\u5316\u800c\u8c03\u6574\u3002\u8fd9\u5c31\u597d\u6bd4\u4e00\u5217\u706b\u8f66\u5728\u79bb\u5f00\u8f66\u7ad9\u65f6\uff0c\u4e00\u6b21\u51fa\u884c\u7684\u4e58\u5ba2\u5be5\u5be5\u65e0\u51e0\uff0c\u800c\u8fd4\u56de\u8f66\u7ad9\u65f6\uff0c\u5374\u53d1\u73b0\u5df2\u7ecf\u6324\u6ee1\u4e86\u7b49\u5f85\u4e0b\u4e00\u8d9f\u5217\u8f66\u7684\u4e58\u5ba2\u3002<\/p><p>CPRI \u7684\u6807\u7b7e\u8d1f\u62c5\u5f88\u91cd\uff0c\u7edf\u8ba1\u590d\u7528\u6709\u9650\u3002\u8fd9\u4e9b\u56fa\u6709\u7684 CPRI \u4f4e\u6548\u7387\u5bf9\u4e8e 4G\/LTE \u524d\u4f20\u6765\u8bf4\u662f\u53ef\u884c\u7684\uff0c\u4f46\u662f\u5bf9\u4e8e\u5927\u89c4\u6a21 MIMO\u3001\u9ad8\u5e26\u5bbd\u548c\u4f4e\u5ef6\u8fdf\u7684 5G \u4f20\u8f93\u6765\u8bf4\u662f\u975e\u5e38\u4e0d\u73b0\u5b9e\u7684\uff0c\u800c\u4e14\u6210\u672c\u4e5f\u5f88\u9ad8\u3002\u7531\u00a03GPP TR 38.801\u3001IEEE \u548c ITU-T \u5b9a\u4e49\u7684\u521b\u65b0\u89e3\u51b3\u65b9\u6848\u8981\u6c42\u5bf9 BBU \u5143\u4ef6\u8fdb\u884c\u529f\u80fd\u5212\u5206\u3002<\/p><p>\u8fd9\u79cd\u65b0\u67b6\u6784\u6a21\u578b\u7684\u7ec4\u4ef6\u88ab\u5b9a\u4e49\u4e3a RU\uff08\u4ee5\u524d\u79f0\u4e3a RRH \u548c RRU\uff09\u3001\u4e2d\u592e\u5355\u5143 (CU) \u548c\u5206\u5e03\u5f0f\u5355\u5143 (DU)\uff0cCU \u548c DU \u4e4b\u95f4\u7684\u65b0\u94fe\u8def\u88ab\u6070\u5f53\u5730\u79f0\u4e3a\u4e2d\u4f20\u3002RAN \u865a\u62df\u5316\u4f7f BBU \u529f\u80fd\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u5143\u4ef6\u4e2d\u5b9a\u4f4d\u6216\u5171\u7f6e\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u00a0OSI \u5c42\u4e4b\u95f4\u7684\u54ea\u4e2a\u529f\u80fd\u5212\u5206\u6700\u9002\u5408\u5e94\u7528\u6848\u4f8b\u9700\u6c42\u3002\u5206\u79bb\u67b6\u6784\u7684\u7075\u6d3b\u6027\u5bf9\u4e8e\u540c\u65f6\u4f18\u5316 5G \u524d\u4f20\u7f51\u7edc\u4e0a\u7684\u5173\u952e\u5e94\u7528\u6848\u4f8b\u81f3\u5173\u91cd\u8981\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_02_700.jpg\"><img decoding=\"async\" width=\"700\" height=\"479\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_02_700.jpg\" alt=\"\" class=\"wp-image-4706\" srcset=\"http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_02_700.jpg 700w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_02_700-300x205.jpg 300w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_02_700-600x411.jpg 600w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_02_700-64x44.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_03_700.jpg\"><img decoding=\"async\" width=\"700\" height=\"931\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_03_700.jpg\" alt=\"\" class=\"wp-image-4707\" srcset=\"http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_03_700.jpg 700w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_03_700-226x300.jpg 226w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_03_700-300x399.jpg 300w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_03_700-600x798.jpg 600w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_03_700-64x85.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><h1 class=\"wp-block-heading\">\u524d\u4f20\u4e0e\u56de\u4f20Fronthaul vs Backhaul<\/h1><p>\u5206\u79bb\u5f0f RAN \u67b6\u6784\u6539\u53d8\u4e86\u4f20\u7edf\u7684\u524d\u4f20\u548c\u56de\u4f20\u5b9a\u4e49\u3002\u5728\u6700\u65e9\u7684\u7248\u672c\u4e2d\uff0c\u56de\u4f20\u88ab\u7b80\u5355\u5730\u63cf\u8ff0\u4e3a\u65e0\u7ebf\u7f51\u7edc\u548c\u6709\u7ebf\u7f51\u7edc\u4e4b\u95f4\u901a\u8fc7\u7535\u7f06\u6216\u5149\u7ea4\u7684\u8fde\u63a5\u3002\u5f53\u4f9d\u8d56 LTE \u548c\u4e00\u6761\u65b0\u7684\u8fde\u63a5\u96c6\u4e2d\u57fa\u5e26\u5355\u5143\u548c\u5355\u4e2a\u65e0\u7ebf\u7535\u5934\u7684\u94fe\u8def\u63d0\u9ad8\u5e26\u5bbd\u548c\u6548\u7387\u65f6\uff0c\u524d\u4f20\u6210\u4e3a\u4e86\u4e00\u4e2a\u5fc5\u8981\u7684\u8865\u5145\u3002<\/p><p>\u5f53\u524d\u4f20\u548c\u56de\u4f20\u67b6\u6784\uff08\u4ee5\u53ca\u4e2d\u4f20\uff09\u7ed3\u5408\u5728\u4e00\u8d77\u65f6\uff0c\u5b83\u4e5f\u88ab\u79f0\u4e3a\u00a0crosshaul\uff08\u6216\u8005\u00a0x-haul\u00a0\u6216\u00a0xhaul\uff09\u3002<\/p><p>\u7f51\u7edc\u529f\u80fd\u865a\u62df\u5316 (NFV) \u4e3a\u6a21\u5757\u5316\u548c\u5b9a\u5236\u521b\u9020\u4e86\u65b0\u7684\u673a\u4f1a\uff0c\u8fdb\u4e00\u6b65\u6253\u7834\u4e86\u73b0\u6709\u7684\u6a21\u5f0f\u3002DU \u548c\/\u6216 CU \u529f\u80fd\u53ef\u4ee5\u4e0e RU \u96c6\u6210\uff0cDU \u53ef\u4ee5\u4e0e CU \u7ed3\u5408\uff0c\u6216\u8005\u6bcf\u4e2a\u5143\u4ef6\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u4f4d\u7f6e\u72ec\u7acb\u5de5\u4f5c\u3002\u5728\u6bcf\u79cd\u60c5\u51b5\u4e0b\uff0c\u56de\u4f20\u4ecd\u7136\u63d0\u4f9b\u5230\u6838\u5fc3\u7684\u8fde\u63a5\u94fe\u8def\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_04_700.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"626\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_04_700.jpg\" alt=\"\" class=\"wp-image-4708\" srcset=\"http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_04_700.jpg 700w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_04_700-300x268.jpg 300w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_04_700-600x537.jpg 600w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_04_700-64x57.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><h1 class=\"wp-block-heading\">O-RAN \u524d\u4f20<\/h1><p>\u4f20\u7edf\u4e0a\uff0c\u5927\u578b\u8bbe\u5907\u4f9b\u5e94\u5546\u4ee5\u4e13\u6709\u65b9\u5f0f\u5b9e\u73b0 CPRI\uff0c\u8fd9\u4f7f\u8fd0\u8425\u5546\u53ea\u80fd\u4e3a\u524d\u4f20\u7f51\u7edc\u67b6\u6784\u4f7f\u7528\u5355\u4e00\u4f9b\u5e94\u5546\u65b9\u6cd5\u3002\u6253\u7834\u8fd9\u79cd\u5355\u4e00\u7684\u5f62\u6001\u662f\u5f00\u653e\u5f0f RAN (O-RAN) \u80cc\u540e\u7684\u57fa\u672c\u6982\u5ff5\u3002O-RAN \u8054\u76df\u81f4\u529b\u4e8e\u5411\u591a\u4f9b\u5e94\u5546\u3001\u81ea\u4e3b\u7684 RAN \u5143\u4ef6\u7684\u7ed3\u6784\u5316\u8fc1\u79fb\u3002<\/p><p>\u5bf9\u4e8e O-RAN \u524d\u4f20\uff0c\u4f7f\u7528\u901a\u7528\u786c\u4ef6\u548c\u8f6f\u4ef6\u7684\u5f00\u653e\u3001\u865a\u62df\u5316\u67b6\u6784\u5c06\u4fc3\u8fdb\u6765\u81ea\u4e0d\u540c\u4f9b\u5e94\u5546\u7684\u5f00\u653e\u5206\u5e03\u5f0f\u5355\u5143 (O-DU) \u548c\u5f00\u653e\u65e0\u7ebf\u7535\u5355\u5143 (O-RU) \u7b49\u7ec4\u5408\u4e4b\u95f4\u7684\u4e92\u64cd\u4f5c\u6027\u3002\u8fd9\u79cd\u6807\u51c6\u5316\u5c06\u4f7f\u7ade\u4e89\u73af\u5883\u53d8\u5f97\u516c\u5e73\uff0c\u523a\u6fc0\u521b\u65b0\uff0c\u540c\u65f6\u5141\u8bb8\u8fd0\u8425\u5546\u900f\u660e\u4e14\u7ecf\u6d4e\u9ad8\u6548\u5730\u6df7\u5408\u548c\u5339\u914d\u524d\u4f20\u5143\u4ef6\u3002<\/p><h1 class=\"wp-block-heading\">\u524d\u4f20\u7f51\u7edc<\/h1><p>\u5b9e\u73b0\u5343\u5146\u6bd4\u7279\u7684\u901f\u5ea6\u548c 1 \u6beb\u79d2\u7684\u5ef6\u8fdf\u63d0\u9ad8\u4e86 5G \u57fa\u7840\u8bbe\u65bd\u6240\u6709\u65b9\u9762\u7684\u6807\u51c6\uff0c\u5305\u62ec\u524d\u4f20\u4f20\u8f93\u80fd\u529b\u7684\u65e2\u5b9a\u8fb9\u754c\u3002\u5149\u7ea4\u662f\u53ef\u4ee5\u514b\u670d\u8fd9\u4e9b\u969c\u788d\u7684\u4f20\u8f93\u4ecb\u8d28\uff0c\u5177\u6709\u53ef\u6269\u5c55\u7684\u5149\u7ea4\u7ba1\u7406\u548c\u7075\u6d3b\u6027\uff0c\u4ee5\u6ee1\u8db3\u4e0d\u65ad\u589e\u957f\u7684\u524d\u4f20\u9700\u6c42\u3002\u6697\u7ea4\uff08\u5982\u679c\u53ef\u7528\uff09\u662f\u6700\u5177\u6210\u672c\u6548\u76ca\u7684\u9009\u62e9\uff0c\u53ef\u7acb\u5373\u63d0\u5347\u524d\u4f20\u7f51\u7edc\u5bb9\u91cf\u3002\u8be5\u89e3\u51b3\u65b9\u6848\u8fd8\u63d0\u4f9b\u4e86\u6700\u4f73\u9009\u9879\u4e4b\u4e00\uff0c\u90e8\u7f72\u901f\u5ea6\u5feb\uff0c\u5bf9\u5ef6\u8fdf\u7684\u5f71\u54cd\u6700\u4f4e\u3002\u00a0<\/p><p><strong>WDM<\/strong><\/p><p>\u6ce2\u5206\u590d\u7528 (WDM) \u53ef\u4ee5\u66f4\u6709\u6548\u5730\u5229\u7528\u524d\u4f20\u5149\u7ea4\u94fe\u8def\u3002\u901a\u8fc7\u5728\u591a\u4e2a\u6ce2\u957f\u4e0a\u4f20\u8f93\uff0c\u6765\u81ea\u591a\u4e2a\u5929\u7ebf\u7684\u6d41\u91cf\u53ef\u4ee5\u901a\u8fc7\u5355\u6839\u6697\u7ea4\u5728\u7f51\u7edc\u4e2d\u4f20\u8f93\u3002\u7c97\u6ce2\u5206\u590d\u7528 (CWDM) \u5141\u8bb8\u8fd0\u8425\u5546\u540c\u65f6\u4f20\u8f93\u591a\u8fbe 18 \u4e2a\u4fe1\u9053\u3002CWDM \u7684\u88ab\u52a8\u6027\u8d28\u964d\u4f4e\u4e86\u6210\u672c\u548c\u590d\u6742\u6027\u3002\u8bbe\u8ba1\u4e3a\u5229\u7528\u63ba\u94d2\u5149\u7ea4\u653e\u5927\u5668\u7684\u5bc6\u96c6\u6ce2\u5206\u590d\u7528 (DWDM) \u53ef\u4ee5\u521b\u5efa\u591a\u8fbe 96 \u4e2a\u72ec\u7acb\u4fe1\u9053\u3002DWDM \u53ef\u4ee5\u4e3b\u52a8\u90e8\u7f72\uff0c\u4e5f\u53ef\u4ee5\u88ab\u52a8\u90e8\u7f72\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u6240\u9700\u7684\u8ddd\u79bb\u3002\u6df7\u5408 WDM \u9009\u9879\u8fd8\u53ef\u4ee5\u901a\u8fc7\u5728\u9009\u62e9\u7684 CWDM \u4fe1\u9053\u4e0a\u4f20\u8f93\u591a\u4e2a DWDM \u9891\u7387\u6765\u63d0\u9ad8\u541e\u5410\u91cf\u3002<\/p><p><strong>\u65e0\u6e90\u5149\u7f51\u7edc<\/strong><strong> (PON)<\/strong><\/p><p>\u65e0\u6e90\u5149\u7f51\u7edc (PON) \u5229\u7528\u5149\u5206\u8def\u5668\u521b\u5efa\u70b9\u5230\u591a\u70b9\u62d3\u6251\u3002\u652f\u6301\u7edf\u8ba1\u590d\u7528\u7684\u65e0\u6e90\u5149\u7ea4\u62c6\u5206\u662f\u5927\u89c4\u6a21 MIMO \u6280\u672f\u56fa\u6709\u7684 RU \u8fde\u63a5\u5bc6\u5ea6\u7684\u4e00\u4e2a\u6f5c\u5728\u5e73\u8861\u3002<\/p><p>5G \u524d\u4f20\u7f51\u7edc\u4e2d\u5f15\u5165\u7684\u6bcf\u4e00\u4e2a\u989d\u5916\u62c6\u5206\u90fd\u53ef\u4ee5\u4f7f\u73b0\u6709\u5bb9\u91cf\u7ffb\u500d\uff0c\u4f46\u5373\u4f7f\u5728\u7406\u60f3\u7684\u8fde\u63a5\u6761\u4ef6\u4e0b\uff0c\u4e5f\u4f1a\u5e26\u6765\u6700\u5c0f 3dB \u7684\u635f\u5931\u3002\u50cf\u00a0WDM-PON\u00a0\u8fd9\u6837\u7684\u521b\u65b0\u901a\u8fc7\u5728\u4f20\u7edf PON \u7f51\u7edc\u4e0a\u53e0\u52a0\u65b0\u7684\u6ce2\u957f\u800c\u4e0d\u635f\u5bb3\u73b0\u6709\u56fa\u5b9a\u63a5\u5165\u670d\u52a1\u7684\u5e26\u5bbd\uff0c\u4ece\u800c\u5c06\u4f7f\u80fd\u6280\u672f\u7ed3\u5408\u8d77\u6765\u3002\u00a0\u6b64\u5916\uff0cNG-PON2 \u6b63\u5728\u5174\u8d77\uff0c\u8be5\u6280\u672f\u5229\u7528\u5177\u6709\u591a\u4e2a 10G \u6ce2\u957f\u7684\u6ce2\u5206\u590d\u7528\uff08\u4e0a\u884c\u548c\u4e0b\u884c\uff09\u6765\u63d0\u4f9b\u5bf9\u79f0\u7684 40 Gbps \u670d\u52a1\u3002NG-PON2 \u5bf9 G-PON \u548c XG\/XGS-PON \u4f7f\u7528\u4e0d\u540c\u7684\u6ce2\u957f\uff0c\u4f7f\u5f97\u8fd9\u4e09\u79cd\u6ce2\u957f\u53ef\u4ee5\u5728\u540c\u4e00\u4e2a PON \u7f51\u7edc\u4e0a\u5171\u5b58\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_05_700.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"417\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_05_700.jpg\" alt=\"\" class=\"wp-image-4709\" srcset=\"http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_05_700.jpg 700w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_05_700-300x179.jpg 300w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_05_700-600x357.jpg 600w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_05_700-64x38.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><h1 class=\"wp-block-heading\">5G \u524d\u4f20<\/h1><p>5G \u7684\u9ad8\u7ea7\u5e94\u7528\u6848\u4f8b\u5305\u62ec\u589e\u5f3a\u578b\u79fb\u52a8\u5bbd\u5e26 (eMBB)\u3001\u5927\u89c4\u6a21\u673a\u5668\u7c7b\u578b\u901a\u4fe1 (mMTC) \u548c\u8d85\u53ef\u9760\u4f4e\u5ef6\u8fdf\u901a\u4fe1 (uRLLC)\u3002\u6bcf\u79cd\u5e94\u7528\u6848\u4f8b\u90fd\u4f1a\u7ed9 5G \u524d\u4f20\u6027\u80fd\u5e26\u6765\u4e0d\u540c\u7684\u6311\u6218\u3002\u5177\u6709 99.9999% \u53ef\u7528\u6027\u8981\u6c42\u7684\u65e0\u4eba\u9a7e\u9a76\u6c7d\u8f66\u7b49 uRLLC \u5e94\u7528\u5fc5\u987b\u4e0e\u9ad8\u5ea6\u5206\u5e03\u5f0f\u6216\u6570\u636e\u5bc6\u96c6\u578b 5G \u5e94\u7528\uff08\u4f8b\u5982 IoT \u6216\u8d85\u9ad8\u5bc6\u5ea6\u6d41\uff09\u4fdd\u6301\u4e00\u81f4\u3002<\/p><p>\u5bf9\u4e8e\u4e00\u4e2a\u5e94\u7528\u6848\u4f8b\u6765\u8bf4\u88ab\u8ba4\u4e3a\u662f\u6700\u4f73\u7684\u62c6\u5206\u524d\u4f20\u67b6\u6784\u5bf9\u4e8e\u5176\u4ed6\u5e94\u7528\u6848\u4f8b\u6765\u8bf4\u53ef\u80fd\u662f\u9650\u5236\u6027\u7684\uff0c\u751a\u81f3\u662f\u7981\u6b62\u6027\u7684\uff0c\u8fd9\u4f7f\u5f97\u7075\u6d3b\u6027\u6210\u4e3a\u6700\u91cd\u8981\u7684\u8003\u8651\u56e0\u7d20\u3002\u901a\u8fc7\u53d6\u6d88\u7f51\u7edc\u9694\u79bb\u3001\u5f15\u5165\u9ad8\u7ea7\u522b\u7684\u865a\u62df\u5316\u548c\u5b9e\u65bd\u57fa\u4e8e\u5206\u7ec4\u7684\u540c\u6b65\uff0c\u8fd9\u4e09\u79cd\u622a\u7136\u4e0d\u540c\u7684 5G \u5e94\u7528\u6848\u4f8b\u53ef\u4ee5\u540c\u65f6\u5728\u540c\u4e00\u7f51\u7edc\u4e0a\u5f97\u5230\u6709\u6548\u652f\u6301\u3002<\/p><h1 class=\"wp-block-heading\">5G \u524d\u4f20\u67b6\u6784<\/h1><p>5G \u524d\u4f20\u67b6\u6784\u7684\u53d1\u5c55\u521b\u9020\u4e86\u516b\u4e2a\u72ec\u7acb\u7684\u529f\u80fd\u90e8\u7f72\u9009\u9879\uff0c\u6bcf\u4e2a\u9009\u9879\u5728\u5ef6\u8fdf\u3001\u5bb9\u91cf\u548c\u590d\u6742\u6027\u65b9\u9762\u90fd\u6709\u5176\u56fa\u6709\u7684\u4f18\u52bf\u548c\u7f3a\u70b9\u3002\u6bcf\u4e2a\u9009\u9879\u90fd\u662f\u7531\u7269\u7406\u5c42\u3001\u6570\u636e\u5c42\u548c\u7f51\u7edc\u5c42\u4e4b\u95f4\u6839\u636e RU\u3001DU \u548c CU \u7684\u914d\u7f6e\u548c\u4f4d\u7f6e\u9009\u62e9\u7684\u5212\u5206\u70b9\u5b9a\u4e49\u7684\u3002\u9009\u9879 8 \u76f8\u5f53\u4e8e\u5f53\u524d\u7684 CPRI \u914d\u7f6e\uff0c\u9ad8\u7ea7\u522b\u62c6\u5206\u53d1\u751f\u5728 BBU \u548c RRH \u7684\u4f4e\u7269\u7406\u5c42\u4e4b\u95f4\u3002<\/p><p>\u5411\u56fa\u5b9a\u4f4d\u7f6e\u7684\u7528\u6237\u63d0\u4f9b\u9ad8\u5e26\u5bbd\u670d\u52a1\u7684\u56fa\u5b9a\u65e0\u7ebf\u5e94\u7528\u7a0b\u5e8f\u6709\u5229\u4e8e\u9009\u9879 2\uff0c\u5b83\u5c06\u5b9e\u65f6\u529f\u80fd\u653e\u7f6e\u5728\u65e0\u7ebf\u7535\u5934\u4e2d\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a RU\/DU \u529f\u80fd\u5143\u4ef6\u3002\u7531\u4e8e\u591a\u65e0\u7ebf\u7535\u5143\u4ef6\u7684\u9ad8\u6c34\u5e73\u534f\u8c03\u662f\u4e0d\u5fc5\u8981\u7684\uff0c\u5728 RU \u4f4d\u7f6e\u653e\u7f6e\u66f4\u591a\u7684\u529f\u80fd\u53ef\u4ee5\u51cf\u5c11\u524d\u4f20\u7684\u5e26\u5bbd\u548c\u5ef6\u8fdf\u8d1f\u62c5\uff0c\u56e0\u6b64\u5141\u8bb8 CU \u653e\u7f6e\u5728\u8ddd\u65e0\u7ebf\u7535\u5934\u51e0\u5341\u516c\u91cc\u7684\u4f4d\u7f6e\u3002<\/p><p>\u76f8\u53cd\uff0c\u5bf9\u4e8e eMBB \u5e94\u7528\u6848\u4f8b\uff0c\u9009\u9879 6 \u548c 7 \u4ec5\u5c06\u7269\u7406\u5c42\u65e0\u7ebf\u7535\u529f\u80fd\u4e0e RU \u914d\u5bf9\uff0c\u800c\u9644\u52a0\u5c42\u4fdd\u7559\u5728 CU\/DU \u4e2d\u3002\u8fd9\u66f4\u6709\u5229\u4e8e\u79fb\u52a8\u5e94\u7528\u4e2d\u591a\u4e2a\u65e0\u7ebf\u7535\u8bbe\u5907\u7684\u534f\u8c03\uff0c\u5e76\u51cf\u5c11\u524d\u4f20\u6bd4\u7279\u7387\u652f\u6301\u3002\u8fd9\u4e9b\u9009\u9879\u8fd8\u5f15\u5165\u4e86\u66f4\u4e25\u683c\u7684\u5ef6\u8fdf\u8981\u6c42\uff0c\u9650\u5236\u4e86 RU \u548c DU \u4e4b\u95f4\u7684\u5730\u7406\u9694\u79bb\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_06_700.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"648\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_06_700.jpg\" alt=\"\" class=\"wp-image-4710\" srcset=\"http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_06_700.jpg 700w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_06_700-300x278.jpg 300w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_06_700-600x555.jpg 600w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_06_700-64x59.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><h1 class=\"wp-block-heading\">eCPRI \u524d\u4f20<\/h1><p>\u4e3a\u4e86\u4f7f 5G \u524d\u4f20\u7ec4\u4ef6\u7684\u62c6\u5206\u67b6\u6784\u6807\u51c6\u5316\uff0cCPRI \u8054\u76df\u4e8e 2017 \u5e74\u53d1\u5e03\u4e86\u9996\u7248\u589e\u5f3a\u578b\u516c\u5171\u65e0\u7ebf\u7535\u63a5\u53e3 (eCPRI) \u534f\u8bae\u3002\u91c7\u7528 eCPRI \u524d\u4f20\u7684\u65e2\u5b9a\u76ee\u7684\u662f\u964d\u4f4e\u65e0\u7ebf\u7535\u8bbe\u5907 (eRE) \u548c\u65e0\u7ebf\u7535\u8bbe\u5907\u63a7\u5236 (eREC) \u4e4b\u95f4\u7684\u6570\u636e\u901f\u7387\u9700\u6c42\uff0c\u540c\u65f6\u9650\u5236\u590d\u6742\u6027\u3002\u540c\u6b65 CPRI \u6570\u636e\u4f20\u8f93\u88ab\u91c7\u7528\u4ee5\u592a\u7f51\u6216 IP \u7684\u66f4\u6709\u6548\u7684\u57fa\u4e8e\u5206\u7ec4\u7684\u534f\u8bae\u6240\u53d6\u4ee3\u3002<\/p><p>\u53ef\u6ee1\u8db3\u672a\u6765\u9700\u6c42\u7684 eCPRI \u524d\u4f20\u63a5\u53e3\u901a\u8fc7\u4f7f\u7528\u534f\u8c03\u7b97\u6cd5\u5b9e\u65f6\u5206\u6790\u6d41\u91cf\u548c\u5212\u5206\u6d41\u91cf\u4f18\u5148\u7ea7\u6765\u4f18\u5316\u65e0\u7ebf\u7535\u6027\u80fd\u3002eCPRI \u534f\u8bae\u786e\u5b9a\u4e86\u4e09\u4e2a\u9762\uff0c\u8fd9\u4e09\u4e2a\u9762\u662f eRE \u548c eREC \u4e4b\u95f4\u4ea4\u4e92\u6240\u5fc5\u9700\u7684\u3002\u8fd9\u4e9b\u9762\u5305\u62ec\u7528\u6237\u9762\u3001\u540c\u6b65\u9762\u4ee5\u53ca\u63a7\u5236\u548c\u7ba1\u7406\u9762\u3002\u7528\u6237\u9762\u4f20\u8f93\u5b9a\u4e49\u5bf9\u6570\u636e\u5e27\u3001\u6570\u636e\u5305\u548c\u6807\u5934\u683c\u5f0f\u8fdb\u884c\u6807\u51c6\u5316\uff0c\u800c\u540c\u6b65\u53ca\u63a7\u5236\u548c\u7ba1\u7406\u9762\u4e0d\u53d7 eCPRI \u534f\u8bae\u7684\u663e\u5f0f\u9650\u5236\u3002<\/p><h1 class=\"wp-block-heading\">\u524d\u4f20\u4f20\u8f93\u7f51\u7edc\u8282\u70b9 (FTN)<\/h1><p>\u5f53 CPRI \u548c eCPRI \u5728\u878d\u5408\u524d\u4f20\u914d\u7f6e\u4e2d\u540c\u65f6\u90e8\u7f72\u65f6\uff0c\u524d\u4f20\u4f20\u8f93\u7f51\u7edc\u8282\u70b9 (FTN) \u53ef\u7528\u4e8e\u7ba1\u7406\u4ee5\u592a\u7f51\u63a5\u5165\u73af\u3002\u8fd9\u4e2a\u573a\u666f\u9700\u8981\u4e00\u4e2a\u6709\u6548\u7684\u6d4b\u8bd5\u89e3\u51b3\u65b9\u6848\uff0c\u4ee5\u786e\u4fdd\u5ef6\u8fdf\u548c\u540c\u6b65\u9700\u6c42\u7b26\u5408\u89c4\u8303\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_07_700.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"342\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_07_700.jpg\" alt=\"\" class=\"wp-image-4711\" srcset=\"http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_07_700.jpg 700w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_07_700-300x147.jpg 300w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_07_700-600x293.jpg 600w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_07_700-64x31.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><p>VIAVI MTS-5800-100G\u00a0\u53ef\u7528\u4e8e\u5728\u5b9e\u9a8c\u5ba4\u9a8c\u8bc1 FTN \u6027\u80fd\u3001\u6267\u884c eCPRI \u6d4b\u8bd5\u4ee5\u53ca\u7cbe\u786e\u6d4b\u91cf\u541e\u5410\u91cf\u3001\u5ef6\u8fdf\u548c\u6296\u52a8\u3002\u8fd9\u4e9b\u7075\u6d3b\u7684\u624b\u6301\u5f0f\u7f51\u7edc\u6d4b\u8bd5\u4eea\u8fd8\u53ef\u4ee5\u901a\u8fc7 RFC 2544 \u548c Y.1564 \u6d4b\u8bd5\u65b9\u6cd5\u6709\u6548\u5730\u6267\u884c GPS \u4fe1\u53f7\u7a33\u5b9a\u6027\u6d4b\u8bd5\u3001PTP \u5b9a\u65f6\u9519\u8bef\u6d4b\u8bd5\u548c\u4ee5\u592a\u7f51\u6fc0\u6d3b\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_08_700.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"342\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/fronthaul_08_700.jpg\" alt=\"\" class=\"wp-image-4712\" srcset=\"http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_08_700.jpg 700w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_08_700-300x147.jpg 300w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_08_700-600x293.jpg 600w, http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/fronthaul_08_700-64x31.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><h1 class=\"wp-block-heading\">\u524d\u4f20\u6d4b\u8bd5<\/h1><p>5G \u524d\u4f20\u7f51\u7edc\u6781\u5176\u4f9d\u8d56\u4e8e\u5149\u7ea4\u8fde\u63a5\u4ee5\u83b7\u5f97\u6700\u4f73\u6027\u80fd\u3002\u4e0b\u4e00\u4ee3\u524d\u4f20\u67b6\u6784\u8fd8\u9700\u8981\u590d\u6742\u7684\u5b9e\u65f6\u9891\u8c31\u5206\u6790\u3001\u5b9a\u65f6\u548c\u540c\u6b65\u6d4b\u8bd5\u80fd\u529b\u3002VIAVI\u00a0\u5b9a\u65f6\u6269\u5c55\u6a21\u5757\u00a0(TEM) \u53ef\u4ee5\u901a\u8fc7\u5728\u575a\u56fa\u7684\u73b0\u573a\u4fbf\u643a\u5f0f\u5c01\u88c5\u4e2d\u63d0\u4f9b\u7cbe\u786e\u5230\u7eb3\u79d2\u7ea7\u7684 5G \u524d\u4f20\u5b9a\u65f6\u548c\u540c\u6b65\u6d4b\u8bd5\u529f\u80fd\uff0c\u6765\u8865\u5145\u624b\u6301\u5f0f MTS-5800 \u7cfb\u5217\u7f51\u7edc\u6d4b\u8bd5\u4eea\u3002TEM \u8fd8\u53ef\u4ee5\u8fdb\u884c\u7cbe\u786e\u7684 PTP \u5b9a\u65f6\u8bef\u5dee\u548c PDV \u6d4b\u91cf\u3002<\/p><p>\u5e7f\u6cdb\u7684\u524d\u4f20\u90e8\u7f72\u9009\u9879\u4f7f\u591a\u529f\u80fd\u57fa\u7ad9\u5206\u6790\u4eea\u5177\u6709\u5149\u7ea4\u6d4b\u8bd5\u30015G \u670d\u52a1\u6fc0\u6d3b\u3001\u4ee5\u592a\u7f51\u7ebf\u901f\u7387\u548c OTN \u6d4b\u8bd5\u529f\u80fd\uff0c\u8fd9\u4e9b\u529f\u80fd\u65e0\u8bba\u5728\u5b9e\u9a8c\u5ba4\u8fd8\u662f\u5728\u73b0\u573a\u90fd\u975e\u5e38\u91cd\u8981\u3002\u4fbf\u643a\u5f0f\u00a0CellAdvisor 5G\u00a0\u6d4b\u8bd5\u4eea\u5668\u4e3a 5G \u524d\u4f20\u6d4b\u8bd5\u9a8c\u8bc1\u3001\u57fa\u7ad9\u5b89\u88c5\u548c\u8c03\u8bd5\u3001\u5927\u89c4\u6a21 MIMO \u548c\u5929\u7ebf\u6ce2\u675f\u9a8c\u8bc1\u63d0\u4f9b\u4e86\u5b8c\u6574\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u5e76\u96c6\u6210\u4e86\u5149\u7ea4\u68c0\u6d4b\u548c\u9a8c\u8bc1\u529f\u80fd\u3002<\/p><p>\u901a\u8fc7 PON \u548c WDM \u6280\u672f\u5bf9\u5149\u7ea4\u5206\u5272\u548c\u590d\u7528\u7684\u4f9d\u8d56\u4e5f\u589e\u52a0\u4e86\u524d\u4f20\u5149\u7ea4\u6d4b\u8bd5\u8981\u6c42\u7684\u590d\u6742\u6027\uff0c\u4f7f\u5f97\u4f20\u7edf\u7684\u53ef\u89c6\u6545\u969c\u5b9a\u4f4d\u4eea (VFL) \u548c\u529f\u7387\u76d1\u63a7\u5b9e\u8df5\u4e0d\u8db3\u4ee5\u5e94\u5bf9\u67d0\u4e9b\u60c5\u51b5\u3002<\/p><p>VIAVI \u7cfb\u5217\u5149\u7ea4\u5de5\u5177\u4ece\u624b\u6301\u5f0f\u5149\u7ea4\u68c0\u6d4b\u548c\u6e05\u6d01\u5de5\u5177\u6269\u5c55\u5230\u529f\u80fd\u5f3a\u5927\u7684\u00a0FiberComplete\u00a0\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u68c0\u6d4b\u590d\u6742\u5149\u7ea4\u7ebf\u8def\u4e2d\u7684\u4e0d\u826f\u4e8b\u4ef6\uff0c\u5e76\u6267\u884c\u53cc\u5411\u63d2\u5165\u635f\u8017 (IL)\u3001\u5149\u56de\u6ce2\u635f\u8017\uff08\u5149\u56de\u635f\u6d4b\u8bd5\uff09\u548c OTDR \u6d4b\u8bd5\u3002 \u968f\u7740\u524d\u4f20\u7f51\u7edc\u7ee7\u7eed\u5229\u7528 PON \u6280\u672f\u6765\u6ee1\u8db3\u4e0d\u65ad\u589e\u957f\u7684\u5bb9\u91cf\u9700\u6c42\uff0c\u524d\u4f20\u6d4b\u8bd5\u5b9e\u8df5\u5c06\u53d7\u76ca\u4e8e\u4e13\u7528\u7684\u00a0PON \u89e3\u51b3\u65b9\u6848\u6765\u6784\u5efa\u3001\u6fc0\u6d3b\u548c\u7ef4\u62a4 5G \u524d\u4f20\u5b89\u88c5\u3002\u8fd9\u5305\u62ec\u6ce2\u957f\u9009\u62e9\u6027 PON \u529f\u7387\u8868\uff08\u7528\u4e8e\u7075\u6d3b\u5730\u8c03\u6574\u5df2\u90e8\u7f72\u7684 PON \u6280\u672f\u6807\u51c6\uff09\u3001\u7528\u4e8e\u9a8c\u8bc1\u548c\u6620\u5c04 PON \u7f51\u7edc\u7684\u96c6\u4e2d\u5f0f PON \u6d4b\u8bd5\uff0c\u4ee5\u53ca\u7279\u5b9a\u4e8e PON \u7684 OTDR \u6d4b\u8bd5\u89e3\u51b3\u65b9\u6848\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>\u4e0b\u4e00\u4ee3 RAN \u6b63\u5728\u5bfc\u81f4\u524d\u4f20\u5149\u7ea4\u90e8\u7f72\u7684\u589e\u52a0\uff0c\u4ee5\u53ca\u5bf9\u591a\u8def\u590d\u7528\u3001\u865a\u62df\u5316\u548c\u5206\u79bb\u524d\u4f20\u67b6\u6784\u7684\u66f4\u5927\u4f9d\u8d56\u3002\u8fd9\u4f7f\u5f97 eCPRI \u524d\u4f20\u6210\u4e3a\u8fd0\u8425\u5546\u8c03\u67e5\u4e2d\u6700\u91cd\u8981\u7684 5G \u6280\u672f\u4e4b\u4e00\u3002VIAVI 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rel=\"canonical\" href=\"http:\/\/www.comtest.cn\/?p=4702\" \/>\r\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"\u524d\u4f20\uff08Fronthaul\uff09 - \u901a\u6d4b\u79d1\u6280\" \/>\r\n<meta property=\"og:description\" content=\"\u4e0b\u4e00\u4ee3 RAN \u6b63\u5728\u5bfc\u81f4\u524d\u4f20\u5149\u7ea4\u90e8\u7f72\u7684\u589e\u52a0\uff0c\u4ee5\u53ca\u5bf9\u591a\u8def\u590d\u7528\u3001\u865a\u62df\u5316\u548c\u5206\u79bb\u524d\u4f20\u67b6\u6784\u7684\u66f4\u5927\u4f9d\u8d56\u3002\u8fd9\u4f7f\u5f97 eCPRI \u524d\u4f20\u6210\u4e3a\u8fd0\u8425\u5546\u8c03\u67e5\u4e2d\u6700\u91cd\u8981\u7684 5G \u6280\u672f\u4e4b\u4e00\u3002VIAVI 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