{"id":409,"date":"2021-01-17T12:38:55","date_gmt":"2021-01-17T04:38:55","guid":{"rendered":"http:\/\/www.xzclass.com\/?p=409"},"modified":"2022-02-28T14:36:36","modified_gmt":"2022-02-28T06:36:36","slug":"%e4%bb%8e0g%e5%88%b05g%ef%bc%8c%e7%a7%bb%e5%8a%a8%e9%80%9a%e4%bf%a1%e7%9a%84%e7%99%be%e5%b9%b4%e6%b2%89%e6%b5%ae","status":"publish","type":"post","link":"http:\/\/www.xzclass.com\/?p=409","title":{"rendered":"\u4ece0G\u52305G\uff0c\u79fb\u52a8\u901a\u4fe1\u7684\u767e\u5e74\u6c89\u6d6e"},"content":{"rendered":"

\u4e8c\u6218\u671f\u95f4\uff0c\u6469\u6258\u7f57\u62c9\u7684SCR\u7cfb\u5217\u6b65\u8bdd\u673a\u5728\u6218\u573a\u4e0a\u5c61\u5efa\u529f\u52cb\uff0c\u5411\u5168\u4e16\u754c\u5c55\u793a\u4e86\u65e0\u7ebf\u901a\u8bdd\u7684\u795e\u5947\u9b45\u529b\uff0c\u4e5f\u6fc0\u8d77\u4e86\u4eba\u4eec\u5c06\u5176\u5e94\u7528\u4e8e\u6c11\u7528\u5e02\u573a\u7684\u6e34\u671b\u3002<\/span><\/p>\n


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SCR-300<\/span><\/p>\n

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\u6218\u4e89\u7ed3\u675f\u540e\uff0c1946\u5e74\uff0c\u7f8e\u56fdAT&T\u516c\u53f8\u5c06\u65e0\u7ebf\u6536\u53d1\u673a\u4e0e\u516c\u5171\u4ea4\u6362\u7535\u8bdd\u7f51\uff08PSTN\uff09\u76f8\u8fde\uff0c\u6b63\u5f0f\u63a8\u51fa\u4e86\u9762\u5411\u6c11\u7528\u7684MTS\uff08Mobile Telephone Service<\/span>\uff09<\/strong>\u79fb\u52a8\u7535\u8bdd\u670d\u52a1\u3002<\/span><\/p>\n

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\u5728MTS\u4e2d\uff0c\u5982\u679c\u7528\u6237\u60f3\u8981\u62e8\u6253\u7535\u8bdd\uff0c\u5fc5\u987b\u5148\u624b\u52a8\u641c\u7d22\u4e00\u4e2a\u672a\u4f7f\u7528\u7684\u65e0\u7ebf\u9891\u9053\uff0c\u7136\u540e\u5148\u4e0e\u8fd0\u8425\u5546\u63a5\u7ebf\u5458\u8fdb\u884c\u901a\u8bdd\uff0c\u8bf7\u6c42\u5bf9\u65b9\u901a\u8fc7PSTN\u7f51\u7edc\u8fdb\u884c\u4e8c\u6b21\u63a5\u7eed\u3002<\/span><\/p>\n


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\u6574\u4e2a\u901a\u8bdd\u91c7\u7528\u534a\u53cc\u5de5\u7684\u65b9\u5f0f\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u540c\u4e00\u65f6\u95f4\u53ea\u80fd\u6709\u4e00\u65b9\u8bf4\u8bdd\u3002<\/span>\u8bf4\u8bdd\u65f6\uff0c\u7528\u6237\u5fc5\u987b\u6309\u4e0b\u7535\u8bdd\u4e0a\u7684\u201cpush-to-talk\uff08\u6309\u4e0b\u901a\u8bdd\uff09\u201d\u5f00\u5173\u3002<\/span><\/span><\/p>\n


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MTS\u7684\u8ba1\u8d39\u65b9\u5f0f\u4e5f\u5341\u5206\u539f\u59cb\u3002\u63a5\u7ebf\u5458\u4f1a\u5168\u7a0b\u65c1\u542c\u53cc\u65b9\u4e4b\u95f4\u7684\u901a\u8bdd\uff0c\u5e76\u5728\u901a\u8bdd\u7ed3\u675f\u540e\u624b\u52a8\u8ba1\u7b97\u8d39\u7528\uff0c\u786e\u8ba4\u8d26\u5355\u3002
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\u5c3d\u7ba1MTS\u73b0\u5728\u770b\u6765\u975e\u5e38\u53e6\u7c7b\uff0c\u4f46\u5b83\u786e\u5b9e\u662f\u6709\u53f2\u4ee5\u6765\u4eba\u7c7b\u7b2c\u4e00\u5957\u5546\u7528\u79fb\u52a8\u7535\u8bdd\u7cfb\u7edf<\/strong>\u3002<\/span><\/p>\n

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\u7b49\u7b49\uff01\u4e0d\u662f\u8bf4\u79fb\u52a8\u7535\u8bdd\u53d1\u660e\u4e8e70\u5e74\u4ee3\u561b\uff1f\u600e\u4e4840\u5e74\u4ee3\u5c31\u6709\u4e86\uff1f<\/span><\/p>\n


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\u5927\u5bb6\u522b\u614c\uff0cMTS\u6240\u6307\u7684<\/span>Mobile Telephone\uff08\u79fb\u52a8\u7535\u8bdd<\/span>\uff09\uff0c\u5e76\u4e0d\u662f\u624b\u673a<\/span>\uff0c\u800c\u662fMobile Vehicle Telephon<\/span>e<\/span>\uff08\u79fb\u52a8\u8f66\u8f7d\u7535\u8bdd\uff09<\/span><\/strong>\u3002<\/span><\/span>\u66f4\u51c6\u786e\u6765\u8bf4\uff0c\u662f\u8f66\u8f7d\u534a\u53cc\u5de5\u624b\u52a8\u5bf9\u8bb2\u673a\u3002<\/span><\/p>\n


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MTS\u7cfb\u7edf\uff081946\u5e74\uff09<\/span><\/p>\n


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\u4ee5\u5f53\u65f6\u7684\u7535\u5b50\u6280\u672f\u548c\u7535\u6c60\u6280\u672f\uff0c\u662f\u4e0d\u53ef\u80fd\u53d1\u660e\u51fa\u624b\u673a\u7684\u3002\u80fd\u9020\u51fa\u8f66\u8f7d\u7535\u8bdd\uff0c\u5c31\u5df2\u7ecf\u975e\u5e38\u4e0d\u9519\u4e86\u3002<\/span><\/p>\n


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\u6c7d\u8f66\u540e\u5907\u7bb1\u91cc\u5e9e\u5927\u7684\u4fe1\u53f7\u6536\u53d1\u88c5\u7f6e<\/span><\/p>\n


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\u5f53\u65f6\u7684\u201c\u57fa\u7ad9\u201d\u4e5f\u975e\u5e38\u5e9e\u5927\uff0c\u6709\u70b9\u50cf\u5e7f\u64ad\u7535\u89c6\u5854\uff0c\u4e00\u5ea7\u57ce\u5e02\u53ea\u6709\u4e00\u4e2a\uff0c\u4f4d\u4e8e\u5e02\u4e2d\u5fc3\uff0c\u8986\u76d6\u65b9\u570640\u516c\u91cc\uff0c\u529f\u7387\u6781\u9ad8\u3002<\/span><\/p>\n


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1947\u5e7412\u6708\uff0c\u8d1d\u5c14\u5b9e\u9a8c\u5ba4\u7684\u7814\u7a76\u4eba\u5458Douglas H. Ring\uff08\u9053\u683c\u62c9\u65af\u00b7H\u00b7\u745e\u56e0\uff09<\/span>\uff0c\u7387\u5148\u63d0\u51fa\u4e86\u201ccellular<\/span>\uff08\u8702\u7a9d\uff09\u201d<\/strong>\u7684\u6784\u60f3\u3002<\/span><\/p>\n

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\u4ed6\u8ba4\u4e3a\uff0c\u4e0e\u5176\u4e00\u5473\u5730\u63d0\u5347\u4fe1\u53f7\u53d1\u5c04\u529f\u7387\uff0c\u4e0d\u5982\u9650\u5236\u4fe1\u53f7\u4f20\u8f93\u7684\u8303\u56f4\uff0c\u5c06\u4fe1\u53f7\u63a7\u5236\u5728\u4e00\u4e2a\u6709\u9650\u7684\u533a\u57df\uff08\u5c0f\u533a\uff09\u5185\u3002<\/span><\/p>\n


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\u8fd9\u6837\u4e00\u6765\uff0c<\/span>\u4e0d<\/span>\u540c<\/span>\u7684\u5c0f\u533a\u53ef\u4ee5\u4f7f<\/span>\u7528\u76f8\u540c\u7684\u9891\u7387<\/span>\uff0c\u4e92\u4e0d\u5f71\u54cd<\/span>\uff0c\u63d0\u5347\u7cfb\u7edf\u5bb9\u91cf\u3002<\/span><\/span><\/p>\n


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\u9053\u683c\u62c9\u65af\u5f53\u65f6\u7684\u8bba\u6587\uff0c\u6807\u9898\u4e3a\u201c\u79fb\u52a8\u7535\u8bdd\u2014\u2014\u5e7f\u57df\u8986\u76d6\u201d<\/span><\/p>\n

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\u8702\u7a9d\u901a\u4fe1\u7684\u8bbe\u60f3\u867d\u7136\u5f88\u597d\uff0c\u4f46\u662f\uff0c\u540c\u6837\u53d7\u9650\u4e8e\u5f53\u65f6\u7684\u7535\u5b50\u6280\u672f\uff08\u5c24\u5176\u662f\u5207\u6362\u6280\u672f\uff09\uff0c\u65e0\u6cd5\u5b9e\u73b0\u3002\u8d1d\u5c14\u5b9e\u9a8c\u5ba4\u53ea\u80fd\u5c06\u5176\u675f\u4e4b\u9ad8\u9601\u3002<\/span><\/p>\n


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\u5230\u4e8650\u5e74\u4ee3\uff0c\u9646\u7eed\u6709\u66f4\u591a\u7684\u56fd\u5bb6\u5f00\u59cb\u5efa\u8bbe\u8f66\u8f7d\u7535\u8bdd\u7f51\u7edc\u3002\u4f8b\u5982\uff0c<\/span>195<\/span>2\u5e74\uff0c\u897f\u5fb7\uff08\u8054\u90a6\u5fb7\u56fd<\/span>\uff09<\/span>\u63a8\u51fa\u7684<\/span>A<\/span>–<\/span>Netz<\/span>\u3002<\/span><\/p>\n

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1961\u5e74\uff0c\u82cf\u8054\u5de5\u7a0b\u5e08\u5217\u6602\u5c3c\u5fb7\u00b7\u5e93\u666e\u91cc\u4e9a\u8bfa\u7ef4\u5947\uff08Leonid Kupriyanovich\uff09\u53d1\u660e\u4e86\u041b\u041a-1\u578b\u79fb\u52a8\u7535\u8bdd\uff0c\u540c\u6837\u662f\u5b89\u88c5\u5728\u6c7d\u8f66\u4e0a\u4f7f\u7528\u7684\u3002<\/span>\u540e\u6765\uff0c\u82cf\u8054\u63a8\u51fa\u4e86Altai\u6c7d\u8f66\u7535\u8bdd\u7cfb\u7edf\uff0c\u8986\u76d6\u4e86\u672c\u56fd30\u591a\u4e2a\u57ce\u5e02\u3002<\/span><\/p>\n


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\u5217\u6602\u5c3c\u5fb7\u548c\u4ed6\u7684\u041b\u041a-1\u578b\u4fbf\u643a\u79fb\u52a8\u7535\u8bdd<\/span><\/p>\n

1969\u5e74\uff0c\u7f8e\u56fd\u63a8\u51fa\u4e86\u6539\u8fdb\u578b\u7684MTS\u8f66\u8f7d\u7535\u8bdd\u7cfb\u7edf\uff0c\u79f0\u4e3aIMTS\uff08improved MTS\uff09<\/strong>\u3002<\/span><\/p>\n

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IMTS\u652f\u6301\u5168\u53cc\u5de5\u3001\u81ea\u52a8\u62e8\u53f7\u548c\u81ea\u52a8\u9891\u9053\u641c\u7d22\uff0c\u53ef\u4ee5\u63d0\u4f9b\u4e8611\u4e2a\u9891\u9053\uff08\u540e\u6765\u4e3a12\u4e2a\uff09\uff0c\u76f8\u6bd4MTS\u6709\u4e86\u8d28\u7684\u98de\u8dc3\u3002<\/span><\/p>\n


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<\/section>\n

IMTS\u79fb\u52a8\u7535\u8bdd\uff08\u6469\u6258\u7f57\u62c9<\/span>\uff09<\/span><\/p>\n

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<\/span>1971\u5e74\uff0c\u82ac\u5170\u63a8\u51fa\u4e86\u516c\u5171\u79fb\u52a8\u7535\u8bdd\u7f51\u7edc<\/span>ARP<\/span>\uff08Auto Radio Puhelin<\/span>\uff0c<\/span>p<\/span>u<\/span>heli<\/span>n\u662f\u82ac\u5170\u8bed\u7535\u8bdd\u7684\u610f\u601d<\/span>\uff09<\/span>\uff0c\u5de5\u4f5c\u5728150MHz\u9891\u6bb5\uff0c\u4ecd\u7136\u662f\u624b\u52a8\u5207\u6362\uff0c\u4e3b\u8981\u4e3a\u6c7d\u8f66\u7535\u8bdd\u670d\u52a1\u3002<\/span><\/p>\n

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\u4e0d\u7ba1\u662fAltai\uff0c\u8fd8\u662fIMTS\u6216ARP\uff0c\u540e\u6765\u90fd\u88ab\u79f0\u4e3a\u201c0G\u201d\u6216\u201cPre-1G\uff08\u51c61G\uff09\u201d\u79fb\u52a8\u901a\u4fe1\u6280\u672f\u3002<\/span><\/p>\n

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\u2589 1G<\/strong><\/span><\/section>\n

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\u8fdb\u516570\u5e74\u4ee3\u540e\uff0c\u968f\u7740\u534a\u5bfc\u4f53\u5de5\u827a\u7684\u53d1\u5c55\uff0c\u624b\u673a\u7684\u8bde\u751f\u6761\u4ef6\u7ec8\u4e8e\u6210\u719f\u3002<\/span><\/p>\n

<\/p>\n

1973\u5e74\uff0c\u6469\u6258\u7f57\u62c9\u7684\u5de5\u7a0b\u5e08\u9a6c\u4e01\u00b7\u5e93\u73c0<\/strong>\uff08Martin Cooper\uff09\u548c\u7ea6\u7ff0\u00b7\u7c73\u5207\u5c14<\/strong>\uff08<\/span>John F.Mitchell\uff09\u7ec8\u4e8e\u4e66\u5199\u4e86\u5386\u53f2\uff0c\u53d1\u660e\u4e86\u4e16\u754c\u4e0a\u7b2c\u4e00\u6b3e\u771f\u6b63\u610f\u4e49\u4e0a\u7684\u624b<\/span>\u673a\uff08\u624b\u6301\u5f0f\u4e2a\u4eba\u79fb\u52a8\u7535\u8bdd\uff09<\/span>\u3002<\/span><\/span><\/p>\n


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\u9a6c\u4e01\u00b7\u5e93\u73c0\uff08\u53f3\uff09\u548c\u7ea6\u7ff0\u00b7\u7c73\u5207\u5c14\uff08\u5de6\uff09<\/span><\/p>\n


<\/span>\u8fd9\u6b3e\u624b\u673a\u88ab\u547d\u540d\u4e3a<\/span>DynaTAC<\/span>\uff08Dynami<\/span>c<\/span> <\/span>Adaptive Total Area Coverage<\/span>\uff09\uff0c\u9ad8\u5ea622cm\uff0c\u91cd\u91cf1.28kg\uff0c\u53ef\u4ee5\u6301\u7eed\u901a\u8bdd20\u5206\u949f\uff0c\u62e5\u6709\u4e00\u6839\u9192\u76ee\u7684\u5929\u7ebf<\/span>\u3002<\/span><\/span><\/p>\n

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\u7b2c\u4e00\u4ee3DynaTAC<\/span><\/p>\n

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1974\u5e74\uff0c\u7f8e\u56fd\u8054\u90a6\u901a\u4fe1\u59d4\u5458\u4f1a\uff08FCC\uff09\u6279\u51c6\u4e86\u90e8\u5206\u65e0\u7ebf\u7535\u9891\u8c31\uff0c\u7528\u4e8e\u8702\u7a9d\u7f51\u7edc\u7684\u8bd5\u9a8c\u3002<\/span>\u7136\u800c\uff0c\u8bd5\u9a8c\u4e00\u76f4\u62d6\u5230<\/span>197<\/span>7<\/span>\u5e74\u624d\u6b63\u5f0f\u5f00\u59cb\u3002<\/span><\/p>\n


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\u5f53\u65f6\u53c2\u4e0e\u8bd5\u9a8c\u7684\uff0c\u662fAT&T\u548c\u6469\u6258\u7f57\u62c9\u8fd9\u4e24\u4e2a\u6b7b\u5bf9\u5934\u3002<\/span><\/p>\n


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AT&T\u57281964\u5e74\u88ab\u7f8e\u56fd\u56fd\u4f1a\u201c\u5265\u593a\u201d\u4e86\u536b\u661f\u901a\u4fe1\u5546\u4e1a\u4f7f\u7528\u6743\u3002\u65e0\u5948\u4e4b\u4e0b\uff0c\u4ed6\u4eec\u5728\u8d1d\u5c14\u5b9e\u9a8c\u5ba4\u7ec4\u5efa\u4e86\u79fb\u52a8\u901a\u4fe1\u90e8\u95e8\uff0c\u5bfb\u627e\u65b0\u7684\u673a\u4f1a\u3002<\/span><\/p>\n


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1964\u20131974\u5e74\u671f\u95f4\uff0c\u8d1d\u5c14\u5b9e\u9a8c\u5ba4\u5f00\u53d1\u4e86\u4e00\u79cd\u53eb\u4f5cHCMTS<\/span>\uff08\u5927\u5bb9\u91cf\u79fb\u52a8\u5f0f\u7535\u8bdd\u7cfb\u7edf<\/span>\uff09<\/span><\/strong>\u7684\u6a21\u62df\u7cfb\u7edf\u3002\u8be5\u7cfb\u7edf\u7684\u4fe1\u4ee4\u548c\u8bdd\u97f3\u4fe1\u9053\u5747\u91c7\u752830kHz\u5e26\u5bbd\u7684FM\u8c03\u5236\uff0c\u4fe1\u4ee4\u901f\u7387\u4e3a10kbps\u3002<\/span><\/p>\n

<\/p>\n

\u7531\u4e8e\u5f53\u65f6\u5e76\u6ca1\u6709\u65e0\u7ebf\u79fb\u52a8\u7cfb\u7edf\u7684\u6807\u51c6\u5316\u7ec4\u7ec7\uff0cAT&T\u516c\u53f8\u5c31\u7ed9HCMTS\u5236\u5b9a\u4e86\u81ea\u5df1\u7684\u6807\u51c6\u3002\u540e\u6765\uff0c\u7535\u5b50\u5de5\u4e1a\u534f\u4f1a\uff08EIA\uff09\u5c06\u8fd9\u4e2a\u7cfb\u7edf\u547d\u540d\u4e3a\u6682\u5b9a\u6807\u51c63<\/strong>(Interim Standard 3\uff0cIS-3)\u3002<\/span><\/p>\n

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1976\u5e74\uff0cHCMTS<\/span>\u6362\u4e86\u4e00\u4e2a\u65b0\u540d\u5b57\u2014\u2014AMPS\uff08Advanced Mobile Phone Service\uff0c\u5148\u8fdb\u79fb\u52a8\u7535\u8bdd\u670d\u52a1<\/span>\uff09<\/span><\/strong>\u3002<\/span><\/p>\n


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AT&T\u5c31\u662f\u91c7\u7528AMPS\u6280\u672f\uff0c\u5728\u829d\u52a0\u54e5\u548c\u7ebd\u74e6\u514b\u8fdb\u884cFCC\u7684\u8bd5\u9a8c\u3002<\/span><\/p>\n


<\/span>\u518d\u6765\u770b\u770b\u6469\u6258\u7f57\u62c9\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u5728\u65e9\u671f\u7684\u65f6\u5019\uff0c\u6469\u6258\u7f57\u62c9\u641e\u4e86\u4e00\u4e2aRCCs\uff08\u65e0\u7ebf\u7535\u516c\u5171\u8f7d\u6ce2\uff09\u6280\u672f\uff0c\u8d5a\u4e86\u4e0d\u5c11\u94b1\u3002\u6240\u4ee5\uff0c\u4ed6\u4eec\u4e00\u76f4\u6781\u529b\u53cd\u5bf9FCC\u7ed9\u8702\u7a9d\u901a\u4fe1\u53d1\u653e\u9891\u8c31\uff0c\u4ee5\u514d\u5f71\u54cd\u81ea\u5df1\u7684RCCs\u5e02\u573a\u3002\u4f46\u4e0e\u6b64\u540c\u65f6\uff0c\u4ed6\u4eec\u4e5f\u5728\u62fc\u547d\u7814\u53d1\u8702\u7a9d\u901a\u4fe1\u6280\u672f\uff0c\u8fdb\u884c\u6280\u672f\u50a8\u5907\u3002\u8fd9\u624d\u6709\u4e86\u524d\u9762DynaTAC\u7684\u8bde\u751f<\/span>\u3002<\/span><\/p>\n


<\/span><\/p>\n

FCC\u53d1\u653e\u9891\u8c31\u540e\uff0c\u6469\u6258\u7f57\u62c9\u57fa\u4e8eDynaTAC<\/span>\uff0c\u5728\u534e\u76db\u987f\u8fdb\u884c\u8bd5\u9a8c\u3002<\/span><\/span><\/p>\n


<\/span><\/p>\n

\u5c31\u5728\u4ed6\u4eec\u8fd8\u5728\u6162\u60a0\u60a0\u5730\u8fdb\u884c\u8bd5\u9a8c\u7684\u65f6\u5019\uff0c\u522b\u7684\u56fd\u5bb6\u5df2\u7ecf\u6377\u8db3\u5148\u767b\u4e86\u3002<\/span><\/p>\n

<\/p>\n

1979\u5e74\uff0c\u65e5\u672c\u7535\u62a5\u7535\u8bdd\u516c\u53f8\uff08Nippon Telegraph and Telephone<\/span>\uff0cNTT\uff09\u5728\u4e1c\u4eac\u5927\u90fd\u4f1a\u5730\u533a\u63a8\u51fa\u4e86\u4e16\u754c\u9996\u4e2a\u5546\u7528\u81ea\u52a8\u5316\u8702\u7a9d\u901a\u4fe1\u7cfb\u7edf\u3002<\/span><\/strong>\u8fd9\u4e2a\u7cfb\u7edf\u540e\u6765\u88ab\u8ba4\u4e3a\u662f\u5168\u7403\u7b2c\u4e00\u4e2a1G\u5546\u7528\u7f51\u7edc<\/strong>\u3002<\/span><\/p>\n


<\/span><\/p>\n

<\/p>\n

<\/span><\/p>\n

\u5f53\u65f6\uff0c\u7cfb\u7edf\u62e5\u670988\u4e2a\u57fa\u7ad9\uff0c\u652f\u6301\u4e0d\u540c\u5c0f\u533a\u7ad9\u70b9\u4e4b\u95f4\u7684\u5168\u81ea\u52a8\u547c\u53eb\u5207\u6362\uff0c\u4e0d\u9700\u8981\u4eba\u5de5\u5e72\u9884\u3002<\/span><\/p>\n

<\/p>\n

\u7cfb\u7edf\u91c7\u7528FDMA\u6280\u672f\uff0c\u4fe1\u9053\u5e26\u5bbd25KHz\uff0c\u5904\u4e8e800MHz\u9891\u6bb5\uff0c\u53cc\u5de5\u4fe1\u9053\u603b\u6570\u4e3a600\u4e2a\u3002<\/span><\/p>\n

<\/p>\n

\u4e24\u5e74\u540e\uff0c1981\u5e74\uff0c\u5317\u6b27\u56fd\u5bb6\u632a\u5a01\u548c\u745e\u5178\u5efa\u7acb\u4e86\u6b27\u6d32\u7684\u9996\u4e2a1G\u79fb\u52a8\u7f51\u7edc\u2014\u2014NMT\uff08 Nordic Mobile Telephones\uff0c<\/span>\u5317\u6b27\u79fb\u52a8\u7535\u8bdd<\/span>\uff09<\/span>\u3002\u4e0d\u4e45\u540e\uff0c\u4e39\u9ea6\u548c\u82ac\u5170\u4e5f\u52a0\u5165\u4e86\u4ed6\u4eec\u3002NMT\u6210\u4e3a\u5168\u7403\u7b2c\u4e00\u4e2a\u5177\u6709\u56fd\u9645\u6f2b\u6e38\u529f\u80fd\u7684\u79fb\u52a8\u7535\u8bdd\u7f51\u7edc\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u518d\u540e\u6765\uff0c\u6c99\u7279\u963f\u62c9\u4f2f\u3001\u4fc4\u7f57\u65af\u548c\u5176\u5b83\u4e00\u4e9b\u6ce2\u7f57\u7684\u6d77\u548c\u4e9a\u6d32\u56fd\u5bb6\u4e5f\u5f15\u5165\u4e86NMT\u3002<\/span><\/p>\n


<\/span><\/p>\n

<\/p>\n

NMT\u7535\u8bdd\uff08\u7231\u7acb\u4fe1\u5236\u9020\uff09<\/span><\/p>\n

<\/p>\n

1983\u5e74\uff0c\u540e\u77e5\u540e\u89c9\u7684\u7f8e\u56fd\u7ec8\u4e8e\u60f3\u8d77\u6765\u8981\u641e\u81ea\u5df1\u76841G\u5546\u7528\u7f51\u7edc\u3002    <\/span><\/p>\n


<\/span><\/p>\n

1983\u5e749\u6708\uff0c\u6469\u6258\u7f57\u62c9\u53d1\u5e03\u4e86\u5168\u7403\u7b2c\u4e00\u90e8\u5546\u7528\u624b\u673a\u2014\u2014DynaTAC 8000X\uff0c\u91cd\u91cf1kg\uff0c\u53ef\u4ee5\u6301\u7eed\u901a\u8bdd30\u5206\u949f\uff0c\u5145\u6ee1\u7535\u9700\u898110\u5c0f\u65f6\uff0c\u552e\u4ef7\u5374<\/span>\u9ad8\u8fbe3995\u7f8e\u5143\u3002<\/span><\/span><\/p>\n


<\/span><\/span><\/p>\n

<\/section>\n

DynaTAC 8000X<\/span><\/p>\n


<\/span><\/p>\n

1983\u5e7410\u670813\u65e5\uff0cAmericitech\u79fb\u52a8\u901a\u4fe1\u516c\u53f8\uff08\u6765\u81eaAT&T\uff09\u57fa\u4e8eAMPS\u6280\u672f\uff0c\u5728\u829d\u52a0\u54e5\u63a8\u51fa\u4e86\u5168\u7f8e\u7b2c\u4e00\u5f201G\u7f51\u7edc\u3002<\/span><\/p>\n


<\/span><\/p>\n

<\/p>\n

\u5f53\u65f6\u7684\u7b2c\u4e00\u4e2a\u7528\u6237\uff0cDave Meilhan<\/span><\/p>\n


<\/span><\/p>\n

\u8fd9\u5f20\u7f51\u7edc\u65e2\u53ef\u4ee5\u4f7f\u7528\u8f66\u8f7d\u7535\u8bdd\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528DynaTAC 8000X<\/span>\u3002<\/span><\/p>\n


<\/span><\/p>\n

FCC\u5728800MHz\u9891\u6bb5\u4e3aAMPS\u5206\u914d\u4e8640MHz\u5e26\u5bbd\u3002\u501f\u52a9\u8fd9\u4e9b\u5e26\u5bbd\uff0cAMPS\u627f\u8f7d\u4e86666\u4e2a\u53cc\u5de5\u4fe1\u9053\uff0c\u5355\u4e2a\u4e0a\u884c\u6216\u4e0b\u884c\u4fe1\u9053\u7684\u5e26\u5bbd\u4e3a30KHz\u3002<\/span>\u540e\u6765\uff0cFCC\u53c8\u8ffd\u52a0\u5206\u914d\u4e8610MHz\u5e26\u5bbd\u3002\u56e0\u6b64\uff0cAMPS\u7684\u53cc\u5de5\u4fe1\u9053\u603b\u6570\u53d8\u4e3a832\u4e2a\u3002<\/span><\/span><\/p>\n

<\/p>\n

\u5546\u7528<\/span>\u7b2c\u4e00\u5e74\uff0cAmericitech<\/span>\u5356\u51fa\u4e86<\/span>\u5927\u7ea61<\/span>20<\/span>0\u90e8<\/span>DynaTAC 8000X<\/span>\u624b\u673a\uff0c\u7d2f\u79ef\u4e8620\u4e07<\/span>\u7528<\/span>\u6237<\/span>\u3002<\/span>\u4e94\u5e74\u540e\uff0c\u7528\u6237\u6570\u53d8\u6210200\u4e07\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u8fc5\u731b\u589e\u957f\u7684\u7528\u6237\u6570\u91cf\u8fdc\u8fdc\u8d85\u8fc7\u4e86AMPS\u7f51\u7edc\u7684\u627f\u53d7\u80fd\u529b\u3002\u540e\u6765\uff0c\u4e3a\u4e86\u63d0\u5347\u5bb9\u91cf\uff0c<\/span>\u6469\u6258\u7f57\u62c9<\/span>\u63a8\u51fa\u7684<\/span>\u7a84\u5e26\u7248AMPS\u6280\u672f\uff0c\u5373NA<\/span>MPS<\/span>\u3002<\/span>\u5b83\u5c06<\/span>\u73b0\u6709\u768430KHz\u8bed\u97f3\u4fe1\u9053\u5206\u6210\u4e09\u4e2a10KHz\u4fe1\u9053\uff08\u4fe1\u9053\u603b\u6570\u53d8\u62102496\u4e2a\uff09<\/span>\uff0c\u4ee5\u6b64\u8282\u7ea6\u9891\u8c31\uff0c<\/span><\/span>\u6269\u5145\u5bb9\u91cf<\/span>\u3002<\/span><\/p>\n

<\/p>\n

\u9664\u4e86NMT\u548cAMPS\u4e4b\u5916\uff0c\u53e6\u4e00\u4e2a\u88ab\u5e7f\u6cdb\u5e94\u7528\u76841G\u6807\u51c6\u662fTACS\uff08<\/span>Tot<\/span>al Access Communication Systems<\/span>\uff09<\/span><\/strong>\uff0c\u9996\u53d1\u4e8e\u82f1\u56fd\u3002<\/span><\/p>\n

<\/p>\n

1983\u5e742\u6708\uff0c\u82f1\u56fd\u653f\u5e9c\u5ba3\u5e03\uff0cBT\uff08\u82f1\u56fd\u7535\u4fe1\uff09\u548cRacal Millicom<\/span>\uff08\u6c83\u8fbe\u4e30\u7684\u524d\u8eab\uff09\u8fd9\u4e24\u5bb6\u516c\u53f8\u5c06\u4ee5AMPS\u6280\u672f\u4e3a\u57fa\u7840\uff0c\u5efa\u8bbeTACS\u79fb\u52a8\u901a\u4fe1\u7f51\u7edc\u3002<\/span><\/p>\n


<\/span><\/p>\n

1985\u5e741\u67081\u65e5\uff0c\u6c83\u8fbe\u4e30\u6b63\u5f0f\u63a8\u51faTACS\u670d\u52a1\uff08\u4ece\u7231\u7acb\u4fe1\u4e70\u7684\u8bbe\u5907\uff09\uff0c\u5f53\u65f6\u53ea\u670910\u4e2a\u57fa\u7ad9\uff0c\u8986\u76d6\u6574\u4e2a\u4f26\u6566\u5730\u533a\u3002<\/span><\/p>\n

<\/p>\n

TACS\u7684\u5355\u4e2a\u4fe1\u9053\u5e26\u5bbd\u662f25KHz\uff0c\u4e0a\u884c\u4f7f\u7528890-905MHz\uff0c\u4e0b\u884c935-950MHz\uff0c\u4e00\u5171\u6709600\u4e2a\u4fe1\u9053\u7528\u4e8e\u4f20\u8f93\u8bed\u97f3\u548c\u63a7\u5236\u4fe1\u53f7\u3002<\/span><\/p>\n


<\/span><\/p>\n

TACS\u7cfb\u7edf\u4e3b\u8981\u662f\u7531\u6469\u6258\u7f57\u62c9\u5f00\u53d1\u51fa\u6765\u7684\uff0c\u5b9e\u9645\u4e0a\u662fAMPS\u7cfb\u7edf\u7684\u4fee\u6539\u7248\u672c\u3002\u4e24\u8005\u4e4b\u95f4\u9664\u4e86\u9891\u6bb5\u3001\u9891\u9053\u95f4\u9694\u3001\u9891\u504f\u548c\u4fe1\u4ee4\u901f\u7387\u4e0d\u540c\uff0c\u5176\u5b83\u5b8c\u5168\u4e00\u81f4\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u548c\u5317\u6b27\u7684NMT\u76f8\u6bd4\uff0c<\/span>TACS\u7684\u6027\u80fd\u7279\u70b9\u6709\u660e\u663e\u7684\u533a\u522b\u3002NMT\u9002\u5408\u5317\u6b27\u56fd\u5bb6\uff08\u65af\u582a\u7684\u7eb3\u7ef4\u4e9a\u534a\u5c9b\uff09\u4eba\u53e3\u7a00\u5c11\u7684\u519c\u6751\u73af\u5883\uff0c\u91c7\u7528\u7684\u662f450MHz\uff08\u540e\u6765\u6539\u6210800MHz\uff09\u7684\u9891\u7387\uff0c\u5c0f\u533a\u8303\u56f4\u66f4\u5927\uff0c<\/span><\/p>\n

<\/p>\n

\u800cTACS\u7684\u4f18\u52bf\u662f\u5bb9\u91cf\uff0c\u800c\u975e\u8986\u76d6\u8ddd\u79bb\u3002TACS\u7cfb\u7edf\u53d1\u5c04\u673a\u529f\u7387\u8f83\u5c0f\uff0c\u9002\u5408\u82f1\u56fd\u8fd9\u6837\u4eba\u53e3\u5bc6\u5ea6\u9ad8\u3001\u57ce\u5e02\u9762\u79ef\u5927\u7684\u56fd\u5bb6\u3002<\/span><\/p>\n

<\/p>\n

\u968f\u7740\u7528\u6237\u6570\u91cf\u7684\u589e\u52a0\uff0c\u540e\u6765TACS\u8865\u5145\u4e86\u4e00\u4e9b\u9891\u6bb5\uff0810MHz\uff09\uff0c\u53d8\u6210ETACS\uff08Extended TACS\uff09\u3002\u65e5\u672cNTT\u5728TACS\u57fa\u7840\u4e0a\uff0c\u641e\u51fa\u4e86JTACS\u3002
<\/span><\/p>\n

<\/p>\n

\u503c\u5f97\u4e00\u63d0\u7684\u662f\uff0c1987\u5e74\u4e2d\u56fd\u5728\u5e7f\u5dde\u5efa\u8bbe\u7684\u7b2c\u4e00\u4e2a\u79fb\u52a8\u901a\u4fe1\u57fa\u7ad9\uff0c\u91c7\u7528\u7684\u5c31\u662fTACS\u6280\u672f\uff0c\u5408\u4f5c\u5382\u5546\u662f\u6469\u6258\u7f57\u62c9\u3002<\/span><\/p>\n


<\/span><\/p>\n

<\/p>\n

\u4e2d\u56fd\u7b2c\u4e00\u4e2a\u57fa\u7ad9\uff08\u5e7f\u5dde\uff09<\/span><\/p>\n

<\/p>\n

\u9664\u4e86<\/span>AMPS\uff0cTACS\u548cNMT\u4e4b\u5916\uff0c1G\u6280\u672f\u8fd8\u5305\u62ec\u5fb7\u56fd\u7684C-Netz\u3001\u6cd5\u56fd\u7684Radiocom 2000\u548c\u610f\u5927\u5229\u7684RTMI\u7b49\u3002\u8fd9\u4e9b\u767e\u82b1\u9f50\u653e\u7684\u6280\u672f\uff0c\u5ba3\u544a\u4e86\u79fb\u52a8\u901a\u4fe1\u65f6\u4ee3\u7684\u5230\u6765\u3002\uff08\u4e8b\u5b9e\u4e0a\uff0c\u5f53\u65f6\u5e76\u6ca1\u67091G\u8fd9\u6837\u7684\u53eb\u6cd5\uff0c\u53ea\u662f2G\u6280\u672f\u51fa\u73b0\u540e\uff0c\u624d\u628a\u5b83\u4eec\u79f0\u4e3a1G\uff0c\u4ee5\u4f5c\u533a\u5206\u3002\uff09<\/span><\/p>\n


<\/span><\/p>\n

<\/section>\n

<\/span><\/p>\n


<\/span><\/p>\n

\u2589 2G<\/span><\/strong><\/span><\/section>\n


<\/span><\/p>\n

1982\u5e74\uff0c\u6b27\u6d32\u90ae\u7535\u7ba1\u7406\u59d4\u5458\u4f1a\u6210\u7acb\u4e86\u201c\u79fb\u52a8\u4e13\u5bb6\u7ec4\u201d\uff0c\u4e13\u95e8\u8d1f\u8d23\u901a\u4fe1\u6807\u51c6\u7684\u7814\u7a76\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u8fd9\u4e2a\u201c\u79fb\u52a8\u4e13\u5bb6\u7ec4\u201d\uff0c\u6cd5\u8bed\u7f29\u5199\u662fGroupeSp\u00e9cialMobile\uff0c\u540e\u6765\u8fd9\u4e00\u7f29\u5199\u7684\u542b\u4e49\u88ab\u6539\u4e3a\u201c\u5168\u7403\u79fb\u52a8\u901a\u4fe1\u7cfb\u7edf\u201d\uff08Global System for Mobile communications\uff09\uff0c\u4e5f\u5c31\u662f\u5927\u540d\u9f0e\u9f0e\u7684GSM<\/strong>\u3002<\/span><\/p>\n


<\/span><\/p>\n

GSM\u7684\u6210\u7acb\u5b97\u65e8\uff0c\u662f\u8981\u5efa\u7acb\u4e00\u4e2a\u65b0\u7684\u6cdb\u6b27\u6807\u51c6\uff0c\u5f00\u53d1\u6cdb\u6b27\u516c\u5171\u9646\u5730\u79fb\u52a8\u901a\u4fe1\u7cfb\u7edf\u3002\u4ed6\u4eec\u63d0\u51fa\u4e86\u9ad8\u6548\u5229\u7528\u9891\u8c31\u3001\u4f4e\u6210\u672c\u7cfb\u7edf\u3001\u624b\u6301\u7ec8\u7aef\u548c\u5168\u7403\u6f2b\u6e38\u7b49\u8981\u6c42\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u968f\u540e\u51e0\u5e74\uff0c\u6b27\u6d32\u7535\u4fe1\u6807\u51c6\u7ec4\u7ec7\uff08ETSI\uff09\u5b8c\u6210\u4e86GSM 900MHz\u548c1800MHz\uff08DCS\uff09\u7684\u89c4\u8303\u5236\u5b9a\u3002<\/span><\/p>\n

<\/section>\n

1991\u5e74\uff0c\u82ac\u5170\u7684Radiolinja\u516c\u53f8\uff08\u73b0\u4e3aELISA Oyj\u7684\u4e00\u90e8\u5206\uff09<\/span>\u5728GSM\u6807\u51c6\u7684\u57fa\u7840\u4e0a\uff0c\u63a8\u51fa\u4e86\u5168\u7403\u9996\u4e2a2G\u7f51\u7edc\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u4f17\u6240\u5468\u77e5\uff0c<\/span>2G\u91c7\u7528\u6570\u5b57\u6280\u672f\u53d6\u4ee31G\u7684\u6a21\u62df\u6280\u672f\uff0c\u901a\u8bdd\u8d28\u91cf\u548c\u7cfb\u7edf\u7a33\u5b9a\u6027\u5927\u5e45\u63d0\u5347\uff0c<\/span>\u66f4\u52a0\u5b89\u5168\u53ef\u9760\uff0c<\/span>\u8bbe\u5907\u80fd\u8017\u4e5f\u5927\u5e45\u4e0b\u964d\u3002<\/span><\/span><\/p>\n


<\/span><\/p>\n

\u9664\u4e86GSM\u4e4b\u5916\uff0c\u53e6\u4e00\u4e2a\u5e7f\u4e3a\u4eba\u77e5\u76842G\u6807\u51c6\u5c31\u662f\u7f8e\u56fd\u9ad8\u901a\u516c\u53f8\u63a8\u51fa\u7684CDMA<\/strong>\u3002\u51c6\u786e\u6765\u8bf4\uff0c\u662fIS-95\u6216cdmaOne\u3002<\/span><\/p>\n


<\/span><\/p>\n

IS-95\u6709\u4e24\u4e2a\u7248\u672c\uff0c\u5206\u522b\u662fIS-95A\u548cIS-95B\u3002\u524d\u8005\u53ef\u4ee5\u652f\u6301\u9ad8\u8fbe14.4kbps\u7684\u5cf0\u503c\u6570\u636e\u901f\u7387\uff0c\u800c\u540e\u8005\u5219\u8fbe\u5230115kbps\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u9664\u4e86IS-95\u4e4b\u5916\uff0c\u7f8e\u56fd\u8fd8\u641e\u51fa\u8fc7IS-54\uff08<\/span>North America TDMA Digital Cellular\uff09<\/span>\u548cIS-136\uff081996\u5e74\uff09\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u5176\u5b9e\uff0c2G\u5e76\u4e0d\u662f\u53ea\u6709GSM\u548cCDMA\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u7f8e\u56fd\u8702\u7a9d\u7535\u8bdd\u5de5\u4e1a\u534f\u4f1a\uff08Cellular Telephone Industries Association<\/span>\uff09\u57fa\u4e8eAMPS\u6280\u672f\u641e\u51fa\u4e86\u4e00\u4e2a\u6570\u5b57\u7248\u7684AMPS\uff0c\u53eb\u505aD-AMPS\uff08Digit-AMPS\uff09\uff0c\u5176\u5b9e\u4e5f\u7b97\u662f2G\u6807\u51c6\u30021990\u5e74\uff0c\u65e5\u672c\u63a8\u51fa\u7684PDC\uff08Personal Digital Cellular\uff09\uff0c\u4e5f\u5c5e\u4e8e2G\u6807\u51c6\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u2589 2.5G<\/span><\/strong><\/span><\/section>\n


<\/span><\/p>\n

20\u4e16\u7eaa\u672b\uff0c\u968f\u7740\u4e92\u8054\u7f51\u7684\u5927\u7206\u53d1\uff0c\u4eba\u4eec\u5bf9\u79fb\u52a8\u4e0a\u7f51\u63d0\u51fa\u4e86\u5f3a\u70c8\u7684\u9700\u6c42\u3002\u4e8e\u662f\uff0cGPRS\uff08General Packet Radio Service\uff0c<\/span>\u901a\u7528\u5206\u7ec4\u65e0\u7ebf\u4e1a\u52a1\uff09<\/span><\/strong>\u5f00\u59cb\u51fa\u73b0\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u6211\u4eec\u53ef\u4ee5\u628aGPRS\u770b\u4f5c\u662fGSM\u7684\u4e00\u4e2a\u201c\u63d2\u4ef6<\/span>\u201d\u3002\u5728GPRS\u7684\u5e2e\u52a9\u4e0b\uff0c\u7f51\u7edc\u53ef\u4ee5\u63d0\u4f9b\u6700\u9ad8114Kbps\u7684\u6570\u636e\u4e1a\u52a1\u901f\u7387\u3002<\/span><\/p>\n


<\/span><\/p>\n

GPRS\u6700\u65e9\u57281993\u5e74\u63d0\u51fa\uff0c1997\u5e74\u51fa\u53f0\u4e86\u7b2c\u4e00\u9636\u6bb5\u7684\u534f\u8bae\u3002\u5b83\u7684\u51fa\u73b0\uff0c\u662f\u8702\u7a9d\u901a\u4fe1\u5386\u53f2\u7684\u4e00\u4e2a\u8f6c\u6298\u70b9\u3002\u56e0\u4e3a\u5b83\u610f\u5473\u7740\u6570\u636e\u4e1a\u52a1\u5f00\u59cb\u5d1b\u8d77\uff0c\u6210\u4e3a\u79fb\u52a8\u901a\u4fe1\u7684\u4e3b\u8981\u53d1\u5c55\u65b9\u5411\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u2589 2.75G<\/span><\/strong><\/section>\n


<\/span><\/p>\n

GPRS\u6280\u672f\u63a8\u51fa\u4e4b\u540e\uff0c\u7535\u4fe1\u8fd0\u8425\u5546\u8fd8\u641e\u51fa\u4e86\u901f\u7387\u66f4\u5feb\u7684\u6280\u672f\uff0c\u540d\u5b57\u53eb\u505aEnhanced Data-rates for GSM Evolution\uff08GSM\u6f14\u8fdb\u7684\u589e\u5f3a\u901f\u7387\uff09\uff0c\u4e5f\u5c31\u662f\u5f88\u591a\u4eba\u53ef\u80fd\u6bd4\u8f83\u719f\u6089\u7684EDGE<\/strong>\u3002<\/span><\/p>\n


<\/span><\/p>\n

<\/p>\n

\u624b\u673a\u4fe1\u53f7\u8fb9\u4e0a\u7ecf\u5e38\u770b\u5230\u7684E\uff0c\u5c31\u662fEDGE<\/span><\/p>\n

<\/p>\n

EDGE\u6700\u5927\u7684\u7279\u70b9\u5c31\u662f\u5728\u4e0d\u66ff\u6362\u8bbe\u5907\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u63d0\u4f9b\u4e24\u500d\u4e8eGPRS\u7684\u6570\u636e\u4e1a\u52a1\u901f\u7387\u3002\u56e0\u4e3a\u5f97\u5230\u4e86\u90e8\u5206\u8fd0\u8425\u5546\u7684\u9752\u7750\u3002\u4e16\u754c\u4e0a\u9996\u4e2aEDGE\u7f51\u7edc\uff0c\u662f\u7f8e\u56fdAT&T\u516c\u53f8\u4e8e2003\u5e74\u5728\u81ea\u5bb6GSM\u7f51\u7edc\u4e0a\u90e8\u7f72\u7684\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u2589 3G<\/span><\/strong><\/span><\/section>\n

<\/p>\n

<\/span>1996\u5e74\uff0c\u6b27\u6d32\u6210\u7acbUMTS\uff08Universal Mobile Telecommunications System\uff0c\u901a\u7528\u79fb\u52a8\u901a\u4fe1\u7cfb\u7edf<\/strong>\uff09<\/strong>\u8bba\u575b\uff0c\u4e13\u6ce8\u4e8e\u534f\u8c03\u6b27\u6d323G\u7684\u6807\u51c6\u7814\u7a76\u3002<\/span>\u4ee5\u8bfa\u57fa\u4e9a\u3001\u7231\u7acb\u4fe1\u3001\u963f\u5c14\u5361\u7279\u4e3a\u4ee3\u8868\u7684\u6b27\u6d32\u9635\u8425\uff0c\u6e05\u695a\u5730\u8ba4\u8bc6\u5230<\/span>CDM<\/span>A\u7684\u4f18\u52bf<\/span>\uff0c\u4e8e\u662f\uff0c<\/span>\u5f00\u53d1\u51fa\u4e86\u539f\u7406\u76f8\u7c7b\u4f3c\u7684W-CDMA\u7cfb\u7edf\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u4e4b\u6240\u4ee5\u53eb\u505aW-CDMA\uff08Wide-CDMA\uff09\uff0c\u662f\u56e0\u4e3a\u5b83\u7684\u4fe1\u9053\u5e26\u5bbd\u8fbe\u52305MHz\uff0c\u6bd4CDMA2000\u76841.25MHz\u66f4\u5bbd\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u5f88\u591a\u4eba\u641e\u4e0d\u6e05\u695aUMTS\u548cWCDMA\u7684\u5173\u7cfb\u3002\u5176\u5b9e\uff0cUMTS\u662f\u6b27\u6d32\u90a3\u8fb9\u5bf93G\u7684\u7edf\u79f0\u3002WCDMA\u662fUMTS\u7684\u4e00\u79cd\u5b9e\u73b0\uff0c\u4e00\u822c\u7279\u6307\u65e0\u7ebf\u63a5\u53e3\u90e8\u5206\u3002\u5f85\u4f1a\u6211\u4eec\u63d0\u5230\u7684TD-SCDMA\uff0c\u4e5f\u5c5e\u4e8eUMTS\u3002
<\/span><\/p>\n

<\/p>\n

\u4e3a\u4e86\u80fd\u591f\u548c\u7f8e\u56fd\u6297\u8861\uff0c\u6b27\u6d32ETSI\u8fd8\u8054\u5408\u65e5\u672c\u3001\u4e2d\u56fd\u7b49\u5171\u540c\u6210\u7acb\u4e863GPP\u7ec4\u7ec7\uff083rd Generation Partnership Project\uff0c\u7b2c\u4e09\u4ee3\u5408\u4f5c\u4f19\u4f34\u8ba1\u5212\uff09\uff0c\u5408\u4f5c\u5236\u5b9a\u5168\u7403\u7b2c\u4e09\u4ee3\u79fb\u52a8\u901a\u4fe1\u6807\u51c6\u3002<\/span><\/p>\n

<\/p>\n

\u53cd\u89c2\u5317\u7f8e\u9635\u8425\u8fd9\u8fb9\uff0c\u5185\u90e8\u610f\u89c1\u5b58\u5728\u5206\u6b67\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u4ee5\u6717\u8baf\u3001\u5317\u7535\u4e3a\u4ee3\u8868\u7684\u4f01\u4e1a\uff0c\u652f\u6301WCDMA\u548c3GPP\u3002\u800c\u4ee5\u9ad8\u901a\u4e3a\u4ee3\u8868\u7684\u53e6\u4e00\u90e8\u5206\u52bf\u529b\uff0c\u8054\u5408\u97e9\u56fd\uff0c\u7ec4\u6210\u4e863GPP2\u7ec4\u7ec7\uff0c\u4e0e3GPP\u6297\u8861\u3002\u4ed6\u4eec\u63a8\u51fa\u7684\u6807\u51c6\uff0c\u662f\u57fa\u4e8eCDMA 1X\uff08IS-95\uff09\u53d1\u5c55\u8d77\u6765\u7684CDMA2000\u6807\u51c6\u3002<\/span><\/p>\n


<\/span><\/p>\n

CDMA2000\u867d\u7136\u662f3G\u6807\u51c6\uff0c\u4f46\u4e00\u5f00\u59cb\u7684\u5cf0\u503c\u901f\u7387\u5e76\u4e0d\u9ad8\uff0c\u53ea\u6709153kbps\u3002\u540e\u6765\uff0c\u901a\u8fc7\u6f14\u8fdb\u5230EVDO\uff08EVolution Data Optimized\uff09\uff0c\u6570\u636e\u901f\u7387\u6709\u4e86\u660e\u663e\u7684\u63d0\u5347\uff0c\u53ef\u4ee5\u63d0\u4f9b\u9ad8\u8fbe14.7Mbps\u7684\u5cf0\u503c\u4e0b\u8f7d\u901f\u5ea6\u548c5.4Mbps\u7684\u5cf0\u503c\u4e0a\u4f20\u901f\u5ea6\u3002<\/span><\/p>\n

<\/p>\n

\u4e2d\u56fd\u5728\u8fd9\u4e00\u65f6\u671f\uff0c\u4e5f\u63a8\u51fa\u4e86\u81ea\u5df1\u76843G\u6807\u51c6\u5019\u9009\u65b9\u6848\uff08\u4e5f\u5c31\u662f\u5927\u5bb6\u719f\u77e5\u7684TD-SCDMA\uff09\uff0c\u5171\u540c\u53c2\u4e0e\u56fd\u9645\u7ade\u4e89\u3002<\/span><\/p>\n

<\/p>\n

\u7ecf\u8fc7\u6fc0\u70c8\u7684\u89d2\u9010\u548c\u535a\u5f08\uff0c\u6700\u7ec8\uff0cITU\u56fd\u9645\u7535\u4fe1\u8054\u76df\u786e\u8ba4\u4e86\u5168\u74033G\u7684\u4e09\u5927\u6807\u51c6\uff0c\u5206\u522b\u662f\u6b27\u6d32\u4e3b\u5bfc\u7684WCDMA\uff0c\u7f8e\u56fd\u4e3b\u5bfc\u7684CDMA2000\uff0c\u8fd8\u6709\u4e2d\u56fd\u7684TD-SCDMA\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u57283G\u5546\u7528\u8fdb\u5ea6\u65b9\u9762\uff0c\u8d70\u5728\u524d\u9762\u7684\u53c8\u662f\u65e5\u672cNTT<\/strong>\u3002
<\/span><\/p>\n


<\/span><\/p>\n

1998\u5e7410\u67081\u65e5\uff0cNTT Docomo\u5728\u65e5\u672c\u63a8\u51fa\u4e86\u4e16\u754c\u4e0a\u7b2c\u4e00\u5f20\u5546\u75283G\u7f51\u7edc\uff08\u57fa\u4e8eWCDMA\uff09\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u2589 3.75G<\/span><\/strong><\/span><\/section>\n


<\/span><\/p>\n

\u5728UMTS\u7684\u57fa\u7840\u4e0a\uff0cETSI\u548c3GPP\u53c8\u5f00\u53d1\u51fa\u4e86HSPA\uff08High Speed Packet Access\uff0c\u9ad8\u901f\u5206\u7ec4\u63a5\u5165<\/span>\uff09\u3001<\/span>HSPA+\u3001dual-carrier HSPA+\uff08\u53cc\u8f7d\u6ce2HSPA+\uff09, \u4ee5\u53caHSPA+ Evolution\uff08\u6f14\u8fdb\u578bHSPA+\uff09\u3002\u8fd9\u4e9b\u7f51\u7edc\u6280\u672f\u7684\u901f\u7387\u660e\u663e\u8d85\u8fc7\u4f20\u7edf3G\uff0c\u4eba\u4eec\u5c06\u5176\u79f0\u4e3a3.75G\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u6b63\u56e0\u4e3aHSPA+\u7684\u901f\u7387\u5f88\u5feb\uff0c\u751a\u81f3\u8d85\u8fc7\u4e86\u65e9\u671f\u7684LTE\u548cWiMAX\u3002\u6240\u4ee5\uff0c\u5f53\u65f6\u6709\u4e00\u4e9b\u8fd0\u8425\u5546\uff08\u4f8b\u5982\u7f8e\u56fdT-Mobile\uff09\uff0c\u6ca1\u6709\u7acb\u523b\u542f\u52a8LTE\u7684\u5efa\u8bbe\uff0c\u800c\u662f\u5c06\u73b0\u6709\u7684HSPA\u7f51\u7edc\u5347\u7ea7\u4e3aHSPA+\u3002\u6211\u4eec\u56fd\u5bb6\u7684\u4e2d\u56fd\u8054\u901a\uff0c\u5f53\u65f6\u4e5f\u6709\u7c7b\u4f3c\u7684\u60f3\u6cd5\u3002
<\/span><\/p>\n


<\/span><\/p>\n

\u2589 4G&5G<\/span><\/strong><\/span><\/section>\n


<\/span><\/p>\n

1999\u5e74\uff0cIEEE\u6807\u51c6\u59d4\u5458\u4f1a\u6210\u7acb\u4e86\u4e00\u4e2a\u5de5\u4f5c\u7ec4\uff0c\u4e13\u95e8\u5236\u5b9a\u65e0\u7ebf\u57ce\u57df\u7f51\u6807\u51c6\u30022001\u5e74\uff0cIEEE 802.16\u7684\u7b2c\u4e00\u4e2a\u7248\u672c\u6b63\u5f0f\u53d1\u5e03\uff0c\u540e\u6765\u53d1\u5c55\u4e3aIEEE 802.16m\u3002<\/span><\/p>\n


<\/span><\/p>\n

IEEE 802.16\uff0c\u4e5f\u5c31\u662f\u540e\u6765\u5e7f\u4e3a\u4eba\u77e5\u7684WiMAX\uff08\u5168\u7403\u5fae\u6ce2\u4e92\u8054\u63a5\u5165\uff09\u3002<\/span><\/p>\n


<\/span><\/p>\n

WiMAX\u5f15\u5165\u4e86MIMO\uff08\u591a\u5929\u7ebf\uff09\u3001OFDM\uff08\u6b63\u4ea4\u9891\u5206\u590d\u7528\uff09\u7b49\u5148\u8fdb\u6280\u672f\uff0c\u4e0b\u8f7d\u901f\u7387\u5f97\u5230\u6781\u5927\u63d0\u5347\uff0c\u7ed93GPP\u5e26\u6765\u4e86\u5f88\u5927\u7684\u538b\u529b\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u4e8e\u662f\uff0c3GPP\u5728UMTS\u7684\u57fa\u7840\u4e0a\uff0c\u52a0\u7d27\u63a8\u51fa\u4e86LTE\uff08\u540c\u6837\u5f15\u5165\u4e86MIMO\u548cOFDM\uff09<\/span>\uff0c\u4e0eWiMAX\u8fdb\u884c\u7ade\u4e89\u3002\u540e\u6765\uff0c\u53c8\u6301\u7eed\u6f14\u8fdb\u51fa\u4e86LTE-Advanced\uff082009\u5e74\uff09<\/span>\uff0c\u901f\u7387\u6709\u4e86\u6570\u500d\u7684\u63d0\u5347\u3002<\/span><\/p>\n


<\/span><\/p>\n

2008\u5e74\uff0cITU\u56fd\u9645\u7535\u4fe1\u8054\u76df\u53d1\u5e03\u4e864G\u6807\u51c6\u5e94\u8be5\u9075\u5faa\u7684\u8981\u6c42\uff0c\u5e76\u5c06\u4e4b\u547d\u540d\u4e3aIMT-Advanced\u3002\u771f\u6b63\u7b26\u5408\u8981\u6c42\u7684\uff0c\u53ea\u67093GPP\u7684LTE-Advanced\uff0cIEEE\u7684802.16m\uff0c\u4ee5\u53ca\u4e2d\u56fd\u5de5\u4fe1\u90e8\u63d0\u4ea4\u7684TD-LTE-Advanced\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5b83\u4eec\u662f\u771f\u6b63\u76844G\u6807\u51c6\u3002<\/span><\/p>\n

<\/p>\n

2009\u5e7412\u670814\u65e5\uff0c\u5168\u7403\u9996\u4e2a\u9762\u5411\u516c\u4f17\u7684LTE\u670d\u52a1\u7f51\u7edc\uff08\u4ee54G\u7684\u540d\u4e49\uff09\uff0c\u5728\u745e\u5178\u9996\u90fd\u65af\u5fb7\u54e5\u5c14\u6469\u548c\u632a\u5a01\u9996\u90fd\u5965\u65af\u9646\u5f00\u901a\u3002\u7f51\u7edc\u8bbe\u5907\u5206\u522b\u6765\u81ea\u7231\u7acb\u4fe1\u548c\u534e\u4e3a\uff0c\u800c\u7528\u6237\u7ec8\u7aef\u5219\u6765\u81ea\u4e09\u661f\u3002<\/span><\/section>\n


<\/span><\/p>\n

\u7ecf\u8fc7\u6fc0\u70c8\u7684\u4ea7\u4e1a\u5927\u6218\uff0cLTE\u6700\u7ec8\u6218\u80dcWiMAX\uff0c\u83b7\u5f97\u5168\u7403\u8303\u56f4\u7684\u62e5\u62a4\u548c\u8ba4\u53ef\u3002WiMAX\u8fc5\u901f\u5931\u52bf\uff0c\u88ab\u6253\u5165\u51b7\u5bab\u3002\uff08<\/span>\u5927\u5bb6\u6709\u5174\u8da3\u7684\u8bdd\uff0c\u53ef\u4ee5\u770b\u770b\u8fd9\u7bc7\u6587\u7ae0\uff1a<\/span>WiMAX\u7684\u5751\u7239\u53f2<\/span><\/span><\/a>\uff09<\/span><\/p>\n


<\/span><\/p>\n

\u518d\u5f80\u540e\uff0c3GPP\u63a8\u51fa5G\uff08IMT-2020\uff09\uff0c\u4e00\u7edf\u5929\u4e0b\u3002\u8fd9\u91cc\u9762\u7684\u6545\u4e8b\uff0c\u5c31\u4e0d\u7528\u6211\u591a\u8bf4\u4ec0\u4e48\u4e86\u5427\uff1f\u6211\u4eec\u6bcf\u4e2a\u4eba\uff0c\u90fd\u662f\u65b0\u5386\u53f2\u7684\u89c1\u8bc1\u8005\u3002<\/span><\/p>\n


<\/span><\/p>\n

<\/section>\n

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