在建设宽带网络的两个关键技术中：什么是骨干网技术和接入网技术？？ 请举列接入网技术类型,接入网是网络的哪一部分?
\u5efa\u8bbe\u5bbd\u5e26\u7f51\u7684\u4e24\u4e2a\u4e3b\u8981\u6280\u672f\u662f\u63a5\u5165\u7f51\u6280\u672f\u548c\u795e\u9a6c\uff1f\u6b64\u201c\u795e\u9a6c\u201d\u79f0\u4f5c\u9aa8\u5e72\u7f51\u6280\u672f
\u63a5\u5165\u6280\u672f\u6709\u4e09\u7c7b\uff0c\u5373\u5df2\u7ecf\u6295\u5165\u4f7f\u7528\u7684MMDS\uff08\u591a\u8def\u591a\u70b9\u5206\u914d\u4e1a\u52a1\uff09\u548cDBS\uff08\u76f4\u64ad\u536b\u661f\u7cfb\u7edf\uff09\u4ee5\u53ca\u6b63\u5728\u5174\u8d77\u7684LMDS\uff08\u672c\u5730\u591a\u70b9\u5206\u914d\u4e1a\u52a1\uff09\uff0c\u800cLMDS\u53c8\u662f\u8fd9\u4e00\u9886\u57df\u4e2d\u6700\u70ed\u95e8\u7684\u6280\u672f\u3002
LMDS\u662f\u4e00\u79cd\u5fae\u6ce2\u7684\u5bbd\u5e26\u6280\u672f\u3002\u7531\u4e8e\u8be5\u6280\u672f\u5229\u7528\u9ad8\u5bb9\u91cf\u70b9\u5bf9\u591a\u70b9\u5fae\u6ce2\u4f20\u8f93\uff0c\u901a\u8fc7\u6beb\u7c73\u6ce2\u8fdb\u884c\u4f20\u8f93\uff0c\u5b83\u51e0\u4e4e\u53ef\u4ee5\u63d0\u4f9b\u4efb\u4f55\u79cd\u7c7b\u7684\u4e1a\u52a1\uff0c\u652f\u6301\u53cc\u5411\u8bdd\u97f3\u3001\u6570\u636e\u53ca\u89c6\u9891\u56fe\u50cf\u4e1a\u52a1\uff0c\u80fd\u591f\u5b9e\u73b0\u4ece64kbit/s\u52302Mbit/s\uff0c\u751a\u81f3\u9ad8\u8fbe155 Mbit/s\u7684\u7528\u6237\u63a5\u5165\u901f\u7387,\u5177\u6709\u5f88\u9ad8\u7684\u53ef\u9760\u6027\uff0c\u88ab\u6bd4\u55bb\u4e3a\u201c\u65e0\u7ebf\u5149\u7ea4\u201d\u6280\u672f,\u53ef\u5728\u8f83\u8fd1\u7684\u8ddd\u79bb\u5b9e\u73b0\u53cc\u5411\u4f20\u8f93\u8bdd\u97f3\u3001\u6570\u636e\u56fe\u50cf\u3001\u89c6\u9891\u3001\u4f1a\u8bae\u7535\u89c6\u7b49\u5bbd\u5e26\u4e1a\u52a1,\u5e76\u652f\u6301ATM\u3001TCP/IP\u548cMPEG-2\u3002
LMDS\u4e2d\u5404\u4e2a\u8bcd\u90fd\u6709\u5176\u81ea\u8eab\u7684\u542b\u4e49\uff1alocal\uff08\u672c\u5730\uff09\u662f\u6307\u5355\u4e2a\u57fa\u7ad9\u6240\u80fd\u591f\u8986\u76d6\u7684\u8303\u56f4\uff0cLDMS\u56e0\u4e3a\u53d7\u5de5\u4f5c\u9891\u7387\u7535\u6ce2\u4f20\u64ad\u7279\u6027\u7684\u9650\u5236,\u5355\u4e2a\u57fa\u7ad9\u5728\u57ce\u5e02\u73af\u5883\u4e2d\u6240\u8986\u76d6\u7684\u534a\u5f84\u901a\u5e38\u5c0f\u4e8e5km\uff1bmultipoint\uff08\u591a\u70b9\uff09\u662f\u6307\u4fe1\u53f7\u7531\u57fa\u7ad9\u5230\u7528\u6237\u7aef\u662f\u4ee5\u70b9\u5bf9\u591a\u70b9\u7684\u5e7f\u64ad\u65b9\u5f0f\u4f20\u9001\u7684,\u800c\u4fe1\u53f7\u7531\u7528\u6237\u7aef\u5230\u57fa\u7ad9\u5219\u662f\u4ee5\u70b9\u5bf9\u70b9\u7684\u65b9\u5f0f\u4f20\u9001\uff1bdistribution\uff08\u5206\u914d\uff09\u662f\u6307\u57fa\u7ad9\u5c06\u53d1\u51fa\u7684\u4fe1\u53f7\uff08\u53ef\u80fd\u540c\u65f6\u5305\u62ec\u8bdd\u97f3\u3001\u6570\u636e\u53caInternet\u3001\u89c6\u9891\u4e1a\u52a1\uff09\u5206\u522b\u5206\u914d\u81f3\u5404\u4e2a\u7528\u6237\uff1bservice\uff08\u4e1a\u52a1\uff09\u662f\u6307\u7cfb\u7edf\u8fd0\u8425\u8005\u4e0e\u7528\u6237\u4e4b\u95f4\u7684\u4e1a\u52a1\u63d0\u4f9b\u4e0e\u4f7f\u7528\u5173\u7cfb\uff0c\u5373\u7528\u6237\u4eceLMDS\u7f51\u7edc\u6240\u80fd\u5f97\u5230\u7684\u4e1a\u52a1\u5b8c\u5168\u53d6\u51b3\u4e8e\u8fd0\u8425\u8005\u5bf9\u4e1a\u52a1\u7684\u9009\u62e9\u3002
\u4e8c\u3001LMDS\u7cfb\u7edf\u7f51\u7edc\u7ed3\u6784
\u4e00\u4e2a\u5b8c\u6574\u7684LMDS\u7cfb\u7edf\u5305\u62ec\u7f51\u7edc\u8fd0\u884c\u4e2d\u5fc3(NOC)\u3001\u9aa8\u5e72\u7f51\u7edc\u3001\u57fa\u7ad9\u7cfb\u7edf\u3001\u8fdc\u7aef\u7ad9\u56db\u5927\u90e8\u5206\u3002
\uff081\uff09\u7f51\u7edc\u8fd0\u884c\u4e2d\u5fc3\u3002\u7f51\u7edc\u8fd0\u884c\u4e2d\u5fc3\u4ee5\u8f6f\u4ef6\u5e73\u53f0\u4e3a\u57fa\u7840\uff0c\u5b83\u8d1f\u8d23\u7ba1\u7406\u591a\u4e2a\u533a\u57df\u7684\u7528\u6237\u7f51\u7edc\uff0c\u5b8c\u6210\u5305\u62ec\u6545\u969c\u8bca\u65ad\u548c\u544a\u8b66\u3001\u7cfb\u7edf\u914d\u7f6e\u7ba1\u7406\u3001\u8ba1\u8d39\u7ba1\u7406\u3001\u6027\u80fd\u5206\u6790\u7ba1\u7406\u3001\u5b89\u5168\u7ba1\u7406\u7b49\u57fa\u672c\u529f\u80fd\u3002\u5927\u578b\u7684LMDS\u7cfb\u7edf\u5e94\u6709\u591a\u4e2a\u7f51\u7edc\u8fd0\u884c\u4e2d\u5fc3\uff0c\u5206\u4e3a\u4e2d\u5fc3\u7ba1\u7406\u548c\u591a\u4e2a\u672c\u5730\u7ba1\u7406\u3002
\uff082\uff09\u9aa8\u5e72\u7f51\u7edc\u3002\u9aa8\u5e72\u7f51\u7edc\u53ef\u4ee5\u7531\u5149\u7ea4\u4f20\u8f93\u7f51\u3001ATM\u4ea4\u6362\u6216IP\u4ea4\u6362\u67b6\u6784\u6210\u7684\u6838\u5fc3\u4ea4\u6362\u5e73\u53f0\u4ee5\u53ca\u4e0eInternet\u3001\u516c\u7528\u7535\u8bdd\u7f51\u7b49\u7684\u4e92\u8fde\u6a21\u5757\u7ec4\u6210\u3002\u5404\u4e2a\u57fa\u7ad9\u7684\u4fe1\u53f7\u9001\u5165\u9aa8\u5e72\u7f51\u7edc\uff0c\u5b8c\u6210\u5404\u79cd\u4e1a\u52a1\u4ea4\u6362\u7b49\u3002
\uff083\uff09\u57fa\u7ad9\u7cfb\u7edf\u3002\u57fa\u7ad9\u662f\u9aa8\u5e72\u7f51\u7edc\u4e0e\u8fdc\u7aef\u7ad9\u7684\u63a5\u53e3\uff0c\u5b83\u80fd\u5b9e\u73b0\u9aa8\u5e72\u7f51\u7edc\u4e0e\u8fdc\u7aef\u7ad9\u4e4b\u95f4\u7684\u4fe1\u53f7\u4f20\u9001\u548c\u8f6c\u6362\u3002\u57fa\u7ad9\u53ef\u4ee5\u8bbe\u8ba1\u6210\u5305\u542b\u672c\u5730\u4ea4\u6362\u529f\u80fd\uff0c\u4e5f\u53ef\u4ee5\u8bbe\u8ba1\u6210\u4e0d\u5305\u62ec\u672c\u5730\u4ea4\u6362\u529f\u80fd\uff0c\u53ef\u4ee5\u662f\u5168\u5411\u57fa\u7ad9\uff0c\u4e5f\u53ef\u4ee5\u662f\u591a\u6247\u533a\u57fa\u7ad9\u3002
\uff084\uff09\u8fdc\u7aef\u7ad9\u3002\u8fdc\u7aef\u7ad9\u8d77\u627f\u4e0a\uff08\u57fa\u7ad9\uff09\u542f\u4e0b\uff08\u56fa\u5b9a\u7528\u6237\uff09\u7684\u4f5c\u7528\u3002\u57fa\u7ad9\u7cfb\u7edf\u5230\u8fdc\u7aef\u7ad9\u662f\u4e0b\u884c\u94fe\u8def\uff0c\u91c7\u7528\u65f6\u5206\u590d\u7528(TDM\uff09\u65b9\u5f0f\uff0c\u8fdc\u7aef\u7ad9\u5230\u57fa\u7ad9\u7cfb\u7edf\u662f\u4e0a\u884c\u94fe\u8def\uff0c\u91c7\u7528\u65f6\u5206\u591a\u5740\uff08TDMA\uff09\u65b9\u5f0f\u6216\u9891\u5206\u591a\u5740\uff08FDMA\uff09\u65b9\u5f0f,TDMA\u9002\u7528\u4e8e\u7a81\u53d1\u6027\u6216\u4f4e\u901f\u7387\u6570\u636e\u7684\u63a5\u5165\uff0cFDMA\u9002\u7528\u4e8e\u8fde\u7eed\u6570\u636e\u7684\u63a5\u5165\u3002
\u4e09\u3001LMDS\u7684\u6280\u672f\u7279\u70b9
\uff081\uff09LMDS\u572810GHz\u4ee5\u4e0a\u7684\u9891\u6bb5\u4e0a\u5de5\u4f5c\uff0c\u8fd9\u4e00\u9891\u6bb5\u7684\u6280\u672f\u5b9e\u73b0\u96be\u5ea6\u5927\uff0c\u8fc7\u53bb\u5f88\u5c11\u4f7f\u7528\uff0c\u9891\u5e26\u8f83\u4e3a\u5bbd\u677e\uff0c\u53ef\u7528\u9891\u5e26\u81f3\u5c111GHz\uff0c\u8f83\u9002\u5408\u5bbd\u5e26\u6570\u636e\u4f20\u8f93\uff1b\u76ee\u524d\uff0c\u5927\u90e8\u5206\u56fd\u5bb6\u7684LMDS\u9891\u8c31\u5206\u914d\u4e00\u822c\u96c6\u4e2d\u572824 , 26,28,31\u548c38 GHz\u7b49\u51e0\u4e2a\u9891\u6bb5\uff0c\u5176\u4e2d27.5~29.5 GHz\u6700\u4e3a\u96c6\u4e2d\uff0c\u5dee\u4e0d\u591a80%\u7684\u56fd\u5bb6\u90fd\u5c06\u6728\u56fd\u7684\u9891\u8c31\u5206\u914d\u5728\u8fd9\u4e00\u9891\u6bb5\u4e4b\u5185\u3002
\uff082\uff09\u670d\u52a1\u533a\u5185\u4e00\u822c\u5212\u5206\u6247\u533a\uff0c\u5bf9\u5c04\u9891\u8fdb\u884c\u518d\u7528\uff0c\u4ece\u800c\u589e\u52a0\u7528\u6237\u7684\u53ef\u7528\u5e26\u5bbd\uff0c\u901a\u5e38\u91c7\u7528\u6b63\u4ea4\u6781\u5316\u7684\u65b9\u5f0f\u6765\u51cf\u5c11\u76f8\u90bb\u6247\u533a\u4e4b\u95f4\u7684\u5e72\u6270\u3002\u5728\u670d\u52a1\u533a\u5185\u90e8\uff0c\u8fdc\u7aef\u7ad9\u548c\u57fa\u7ad9\u4e4b\u95f4\u4ee5\u5168\u53cc\u5de5\u7684\u65b9\u5f0f\u8fdb\u884c\u901a\u4fe1\uff0c\u5176\u4e2d\u8fdc\u7aef\u7ad9\u7684\u4e0a\u884c\u94fe\u8def\u53ef\u91c7\u7528TDMA\u3001FDMA\u6216\u8005CDMA\u65b9\u5f0f\uff0c\u76ee\u524d\u591a\u6570\u8bbe\u5907\u91c7\u7528TDMA\u3001FDMA\uff0c\u4e0b\u884c\u94fe\u8def\u5219\u91c7\u7528TDM\u6216CDM\u65b9\u5f0f\u3002\u591a\u5740\u65b9\u5f0f\u7684\u9009\u62e9\u4e0e\u7cfb\u7edf\u8fd0\u8425\u5546\u7684\u4e1a\u52a1\u72b6\u51b5\u3001\u4e1a\u52a1\u53d1\u5c55\u7b56\u7565\u548c\u76ee\u6807\u5e02\u573a\u6709\u5173\u3002\u5bf9\u4e8e\u4f01\u4e1a\u7528\u6237\uff0c\u4e1a\u52a1\u6d41\u91cf\u4e0d\u5927\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528FDMA\u65b9\u5f0f\uff1b\u5bf9\u4e8e\u7a81\u53d1\u6027\u8f83\u5f3a\u7684\u4e1a\u52a1\u6d41\u91cf\uff0c\u5219\u9009\u62e9TDMA\u65b9\u5f0f\uff1b
\uff083\uff09LMDS\u7cfb\u7edf\u8c03\u5236\u65b9\u5f0f\u5206\u4e3a\u6b63\u4ea4\u79fb\u76f8\u952e\u63a7\uff08QPSK\uff09\u548c\u6b63\u4ea4\u5e45\u5ea6\u8c03\u5236\uff08QAM\uff09\u4e24\u79cd\uff0c\u5176\u4e2dQAM\u4e3b\u8981\u91c7\u75284-QAM, 16-QAM,64-QAM\u7b49\uff1b\u4e0a\u3001\u4e0b\u884c\u7684\u8c03\u5236\u65b9\u5f0f\u53ef\u6839\u636e\u5177\u4f53\u60c5\u51b5\u9009\u62e9QPSK,16QAM\u621664QAM\u3002\u82e5\u91c7\u752816QAM\uff0c\u76f8\u540c\u9891\u6bb5\u53ef\u4ee5\u652f\u6301\u7684\u5bb9\u91cf\u662fQPSK\u76842.3\u500d;\u5982\u679c\u91c7\u752864QAM\u5219\u4e3a3.5\u500d\u3002\u4f46\u662f\u8c03\u5236\u6280\u672f\u8d8a\u590d\u6742\uff0c\u5b58\u76f8\u540c\u6761\u4ef6\u4e0b\u8986\u76d6\u7684\u8303\u56f4\u8d8a\u5c0f\uff0c\u6210\u672c\u4e5f\u4f1a\u76f8\u5e94\u589e\u52a0\u3002
\uff084\uff09\u57fa\u7ad9\u5ba4\u5916\u5355\u5143\u548c\u8fdc\u7aef\u7ad9\u4e4b\u95f4\u7684\u7a7a\u4e2d\u63a5\u53e3\u4e00\u822c\u91c7\u752810GHz \u4ee5\u4e0a\u7684\u9891\u5e26\uff0c\u8fd9\u51b3\u5b9a\u4e86LMDS\u57fa\u7ad9\u548c\u8fdc\u7aef\u7ad9\u4e4b\u95f4\u53ea\u80fd\u91c7\u7528\u89c6\u8ddd\uff08LOS\uff09\u4f20\u8f93\uff0c\u5efa\u7b51\u7269\u7b49\u5404\u79cd\u73af\u5883\u56e0\u7d20\u5bf9LDMS\u7684\u5f71\u54cd\u8f83\u5927\u3002\u5bf9\u4e8e\u53d1\u5c55\u4e2d\u7684\u57ce\u5e02\uff0c\u65b0\u5174\u5efa\u7b51\u7269\u7684\u51fa\u73b0\u6709\u53ef\u80fd\u5f71\u54cdLDMS\u7684\u65e0\u7ebf\u4f20\u8f93\uff0c\u7ed9\u8fd0\u8425\u548c\u7ef4\u62a4\u5e26\u6765\u56f0\u96be\u3002
\u56db\u3001LMDS\u7cfb\u7edf\u7684\u5178\u578b\u5e94\u7528\u9886\u57df
\uff081\uff09LMDS\u5728\u6570\u636e\u901a\u4fe1\u7f51\u4e2d\u7684\u5e94\u7528
LMDS\u7cfb\u7edf\u4f5c\u4e3a\u6570\u636e\u901a\u4fe1\u7f51\u7684\u63a5\u5165\u90e8\u5206\uff0c\u8d77\u8fde\u63a5\u4e1a\u52a1\u8282\u70b9\u63a5\u53e3\u548c\u7528\u6237\u7f51\u7edc\u63a5\u53e3\u7684\u6865\u6881\u4f5c\u7528\u3002\u6b64\u5e94\u7528\u662f\u4f20\u7edf\u7535\u4fe1\u8fd0\u8425\u5546\u5728\u5df2\u6709\u7f51\u7edc\u7684\u57fa\u7840\u4e0a\uff0c\u4f5c\u4e3a\u5149\u7ea4\u63a5\u5165\u7684\u8865\u5145\u624b\u6bb5\uff0c\u77ed\u671f\u5185\u6ee1\u8db3\u7528\u6237\u5bf9\u5bbd\u5e26\u4e1a\u52a1\u9700\u6c42\u7684\u6709\u6548\u65b9\u5f0f\u3002\u4e0a\u6d77\u8bd5\u9a8c\u7f51\u4ee5\u4e0a\u6d77ATM\u5bbd\u5e26\u5e73\u53f0\u4e3a\u57fa\u7840\uff0c\u91c7\u7528\u57fa\u4e8eATM\u4fe1\u5143\u590d\u7528\u7684\u8fde\u7eed\u8f7d\u6ce2\u5728\u57fa\u7ad9\u548c\u7528\u6237\u7ad9\u95f4\u7684\u4f20\u8f93\u6570\u636e\u3002\u8bd5\u9a8c\u5bf9\u89c6\u9891\u70b9\u64ad\u3001\u4f1a\u8bae\u7535\u89c6\u548cINTERNET\u63a5\u5165\u7b49\u4e1a\u52a1\u8fdb\u884c\u4e86\u6d4b\u8bd5\uff0c\u7ed3\u679c\u8868\u660eLMDS\u7cfb\u7edf\u53ef\u4f5c\u4e3a\u5bbd\u5e26ATM\u7f51\u4e00\u79cd\u7075\u6d3b\u7684\u63a5\u5165\u65b9\u5f0f\uff0c\u4e3a\u5bbd\u5e26\u7528\u6237\u63d0\u4f9b\u826f\u597d\u7684\u670d\u52a1\u3002
\uff082\uff09LMDS\u5728\u8702\u7a9d\u4e1a\u52a1\u4e2d\u7684\u5e94\u7528
\u8bb8\u591a\u8702\u7a9d\u4e1a\u52a1\u8fd0\u8425\u5546\u5e0c\u671b\u80fd\u591f\u4e0d\u65ad\u6269\u5927\u5176\u4e1a\u52a1\u8303\u56f4\uff0c\u800c\u4e14\u8feb\u5207\u5730\u5229\u7528\u65b0\u5546\u673a\u3002LMD\u7cfb\u7edf\u80fd\u591f\u771f\u6b63\u5728\u4e00\u4e2a\u6247\u533a\u5185\u5feb\u901f\u5730\u52a8\u6001\u5206\u914d\u529f\u80fd\uff0c\u56e0\u6b64\u53ef\u4ee5\u652f\u6301\u79fb\u52a8\u7f51\u7684\u4f20\u8f93\u5e72\u7ebf\uff0c\u800c\u4e14\u540c\u65f6\u53ef\u4ee5\u4e3a\u4f01\u4e1a\u5ba2\u6237\u5728\u5176\u6247\u533a\u8303\u56f4\u5185\u63d0\u4f9b\u65b0\u578b\u5bbd\u5e26\u4e1a\u52a1\u3002
\uff083\uff09LMDS\u6784\u5efa\u672c\u5730\u4fe1\u606f\u73af\u8def
\u4ee5LMDS\u7cfb\u7edf\u7684\u9aa8\u5e72\u7f51\u4e3a\u57fa\u7840\uff0c\u91c7\u7528\u5408\u7406\u7684\u7ec4\u7f51\u6280\u672f\u6784\u5efa\u9ad8\u901f\u4ea4\u6362\u5e73\u53f0\uff0c\u901a\u8fc7\u81ea\u5df1\u5efa\u8bbe\u3001\u7f51\u7ad9\u955c\u50cf\u6216\u4ece\u5916\u9762\u5f15\u8fdb\u4fe1\u606f\u7b49\u4e30\u5bcc\u672c\u5730\u4fe1\u606f\u4e1a\u52a1\uff0c\u5e76\u79df\u7528\u7535\u4fe1\u90e8\u95e8\u51fa\u53e3\u7ebf\u8def\u5b9e\u73b0\u672c\u5730\u73af\u8def\u4e0eINTERNET\u7684\u4e92\u8fde\u3002\u8003\u8651\u5230\u672c\u5730\u4fe1\u606f\u4ea4\u6362\u5e73\u53f0\u9700\u4e3a\u7528\u6237\u63d0\u4f9b\u591a\u6837\u5316\u7684\u670d\u52a1\uff0c\u4e14\u672a\u6765\u7f51\u7edc\u4e2d\u7684\u4e3b\u8981\u4e1a\u52a1\u5c06\u6765\u81eaIP\uff0c\u6240\u4ee5\u91c7\u7528IP\u6838\u5fc3\u7f51\uff0c\u540c\u65f6\u5916\u52a0ATM\u4ea4\u6362\u5c42\uff0c\u5373\u5b9e\u73b0\u4e86\u4e0eLMDS\u7cfb\u7edf\u7a7a\u4e2dATM\u63a5\u53e3\u7684\u4e00\u81f4\u6027\uff0c\u53c8\u6709\u6548\u652f\u6301\u5404\u79cd\u7c7b\u578b\u7684\u4e1a\u52a1\uff08\u5982DDN\u3001FRN\u7b49\uff09\u3002\u8be5\u5e94\u7528\u5bf9\u65b0\u5174\u8fd0\u8425\u5546\u53ef\u4ee5\u5b9e\u73b0\u4e00\u6b21\u6027\u6295\u5165\u5c11\u3001\u5f00\u901a\u5feb\u3001\u7ec4\u7f51\u7075\u6d3b\u548c\u6269\u5bb9\u65b9\u4fbf\u7b49\u4f18\u52bf\uff0cLMDS\u7cfb\u7edf\u7684\u5bbd\u5e26\u6027\u548c\u5ec9\u4ef7\u6027\u4e5f\u7b26\u5408\u76ee\u524d\u7528\u6237\u5bf9\u5bbd\u5e26\u4e1a\u52a1\u7684\u9700\u6c42\u3002
\uff084\uff09LMDS\u5728\u5e7f\u64ad\u7535\u89c6\u7f51\u4e2d\u7684\u5e94\u7528
Celluar Vision\u516c\u53f8\u5728\u7ebd\u7ea6\u5efa\u6210\u4e86\u4e00\u4e2a28GHz\u7684LMDS\u5e7f\u64ad\u89c6\u50cf\u7cfb\u7edf\u3002\u8be5\u7cfb\u7edf\u662f\u76ee\u524d\u4e16\u754c\u4e0a\u6700\u6210\u719f\u7684LMDS\u7cfb\u7edf\uff0c\u4e3b\u8981\u4e3a\u7528\u6237\u63d0\u4f9b\u591a\u9891\u9053\u7684\u7535\u89c6\u8282\u76ee\uff0c\u4ef7\u683c\u4f4e\u4e8e\u5176\u7ade\u4e89\u5bf9\u624b30%\uff0c\u52301997\u5e74\u5e95\u5df2\u62e5\u6709\u7528\u623712000\u4e2a\u3002\u6b64\u7cfb\u7edf\u80fd\u63d0\u4f9b48Mbps\u7684\u4e0b\u884c\u6570\u636e\u901f\u7387\uff0c\u7531\u4e8e\u5f00\u901a\u8f83\u65e9\uff0c\u7cfb\u7edf\u672c\u8eab\u662f\u5355\u5411\u7684\uff0c\u7528\u6237\u9700\u901a\u8fc7PSTN\u5b9e\u73b0\u4e0a\u884c\u94fe\u8def\u8fde\u63a5\u3002\u73b0\u5728\u5229\u7528LMDS\u7cfb\u7edf\u6784\u5efa\u672c\u5730\u4ea4\u4e92\u5f0f\u7535\u89c6\u5206\u914d\u7f51\u5728\u6280\u672f\u4e0a\u5df2\u6ca1\u6709\u4efb\u4f55\u95ee\u9898\u3002
\uff085\uff09LMDS\u6784\u5efa\u7efc\u5408\u4e1a\u52a1\u63a5\u5165\u7f51
\u5efa\u8bbe\u96c6\u8bdd\u97f3\u3001\u6570\u636e\u548c\u89c6\u50cf\u4e8e\u4e00\u4f53\u7684\u7efc\u5408\u4e1a\u52a1\u63a5\u5165\u7f51\uff0c\u65e2\u7b26\u5408\u201c\u4e09\u7f51\u5408\u4e00\u201d\u7684\u8d8b\u52bf\uff0c\u53c8\u53ef\u6ee1\u8db3\u7528\u6237\u5bf9\u591a\u5a92\u4f53\u4e1a\u52a1\u7684\u9700\u6c42\u3002\u901a\u5e38\u8ba4\u4e3a\u5b9e\u73b0\u63a5\u5165\u7f51\u7684\u5168\u5149\u5316\uff08FTTH\uff09\u662f\u6784\u5efa\u7efc\u5408\u4e1a\u52a1\u63a5\u5165\u7f51\u7684\u6700\u4f73\u89e3\u51b3\u65b9\u6848\u3002\u4f46\u91c7\u7528\u5168\u5149\u63a5\u5165\u7f51\u5728\u76ee\u524d\u4ecd\u6709\u5f88\u591a\u56f0\u96be\uff0c\u5982\u5149\u7ea4\u7684\u5efa\u8bbe\u548c\u8fd0\u8425\u6210\u672c\u6602\u8d35\uff0c\u5149\u7ea4\u7684\u94fa\u8bbe\u6d89\u53ca\u5e02\u653f\u3001\u4ea4\u901a\u548c\u73af\u5883\u7b49\u65b9\u9762\u7b49\u3002LMDS\u7cfb\u7edf\u53ef\u652f\u6301\u7684\u6700\u9ad8\u63a5\u5165\u901f\u7387\u8fbe155Mbps\uff0c\u80fd\u591f\u6ee1\u8db3\u7528\u6237\u5bf9\u901a\u4fe1\u5e26\u5bbd\u65e5\u76ca\u589e\u957f\u7684\u9700\u6c42\uff0c\u800c\u5b83\u542f\u52a8\u8d44\u91d1\u5c11\uff0c\u5f00\u901a\u901f\u5ea6\u5feb\u548c\u6269\u5bb9\u7075\u6d3b\u7b49\u4f18\u70b9\u5bf9\u4e0d\u5177\u5907\u5149\u7ea4\u63a5\u5165\u80fd\u529b\u7684\u8fd0\u8425\u5546\u6765\u8bb2\uff0c\u65e0\u7591\u662f\u548c\u77ed\u671f\u5185\u62d3\u5c55\u5bbd\u5e26\u4e1a\u52a1\uff0c\u6ee1\u8db3\u5e02\u573a\u9700\u6c42\u7684\u6709\u529b\u624b\u6bb5\u3002
绛旓細楠ㄥ共缃戞妧鏈細涓绉嶅湪涓昏杩炴帴鑺傜偣涔嬮棿鎵胯浇蹇熼氫俊娴侀噺鐨勯氫俊浼犺緭缃戠粶锛屾彁渚涗簡涓嶅悓瀛愮綉闂翠俊鎭氦鎹㈣矾寰勶紝閲囩敤娣峰悎鍨嬫嫇鎵戠粨鏋勶紝缃戠粶闂磋澶囬噰鐢ㄤ换鎰忕偣瀵逛换鎰忕偣杩炴帴鏂瑰紡銆 鎺ュ叆缃戞妧鏈細鎺ュ叆缃戞妧鏈垎绫绘瘮杈冪箒鏉傦紝浠庢帴鍏ヤ笟鍔＄殑瑙掑害鐪嬶紝鍙畝鍗曞湴鍒嗕负閫傜敤浜庣獎甯︿笟鍔＄殑鎺ュ叆缃戞妧鏈拰閫傜敤浜庡甯︿笟鍔＄殑鎺ュ叆缃戞妧鏈傞傜敤浜庣獎...
绛旓細寤鸿瀹藉甫缃戠粶鐨勪袱涓叧閿妧鏈槸楠ㄥ共缃戞妧鏈拰鎺ュ叆缃戞妧鏈锛岃繖鏄洜涓猴細1銆侀骞茬綉鏄墍鏈夌敤鎴峰叡浜殑锛岃礋璐ｄ紶杈撻骞叉暟鎹祦銆傚畠鏄熀浜庡厜绾ょ殑锛岃兘瀹炵幇澶ц寖鍥寸殑鏁版嵁娴佷紶閫侊紝渚嬪鍦ㄥ煄甯備箣闂村拰鍥藉涔嬮棿銆傝繖浜涚綉缁滈氬父閲囩敤楂橀熶紶杈撶綉缁滐紙濡係ONET/SDH锛変紶杈撴暟鎹紝楂橀熷寘浜ゆ崲璁惧锛堝ATM鍜屽熀浜嶪P鐨勪氦鎹級鎻愪緵缃戠粶璺敱銆備笟鍐...
绛旓細鍥炵瓟锛氱綉缁滅殑鍏抽敭鎶鏈湁缃戠粶缁撶偣銆佸甯︾綉缁滅郴缁銆佽祫婧愮鐞嗗拰浠诲姟璋冨害宸ュ叿銆佸簲鐢ㄥ眰鐨勫彲瑙嗗寲宸ュ叿銆 缃戠粶缁撶偣鏄綉缁滆绠楄祫婧愮殑鎻愪緵鑰,鍖呮嫭楂樼鏈嶅姟鍣ㄣ侀泦缇ょ郴缁熴丮PP绯荤粺澶у瀷瀛樺偍璁惧銆佹暟鎹簱绛夈傚甯︾綉缁滅郴缁熸槸鍦ㄧ綉缁滆绠楃幆澧冧腑,鎻愪緵楂樻ц兘閫氫俊鐨勫繀瑕佹墜娈点傝祫婧愮鐞嗗拰浠诲姟璋冨害宸ュ叿鐢ㄦ潵瑙ｅ喅璧勬簮鐨勬弿杩般佺粍缁囧拰绠＄悊绛夊叧...
绛旓細锛堜簩锛夌▼鎺т氦鎹㈡妧鏈 绋嬫帶浜ゆ崲鎶鏈槸鎸囦汉浠敤涓撻棬鐨勮绠楁満鏍规嵁闇瑕佹妸棰勫厛缂栧ソ鐨勭▼搴忓瓨鍏ヨ绠楁満鍚庡畬鎴愰氫俊涓殑鍚勭浜ゆ崲銆備互绋嬫帶浜ゆ崲鎶鏈彂灞曡捣鏉ョ殑鏁板瓧浜ゆ崲鏈哄鐞嗛熷害蹇紝浣撶Н灏忥紝瀹归噺澶э紝鐏垫椿鎬у己锛屾湇鍔″姛鑳藉锛屼究浜庢敼鍙樹氦鎹㈡満鍔熻兘锛屼究浜庡缓璁炬櫤鑳界綉锛屽悜鐢ㄦ埛鎻愪緵鏇村锛屾洿鏂逛究鐨勭數璇濇湇鍔★紝杩樿兘瀹炵幇浼犵湡锛屾暟鎹紝鍥惧儚...
绛旓細闆嗘垚妯″瀷濡侷P浜ゆ崲銆佹爣璁颁氦鎹㈠拰MPLS锛屽皢IP灞備笌ATM灞傚姛鑳界粨鍚堬紝鍑忓皯鍦板潃瑙ｆ瀽鍗忚鐨勪娇鐢紝浣嗗洜寮閿杈冨ぇ锛岀洰鍓嶄富瑕佸簲鐢ㄤ簬缃戠粶杈圭紭銆傛荤粨鏉ヨ锛孖P over ATM鎶鏈湪瀹藉甫缃戠粶涓彂鎸ヤ簡鍏抽敭浣滅敤锛岄氳繃涓嶅悓鐨勬ā鍨嬪疄鐜版柟寮忥紝瑙ｅ喅浜咺P缃戠粶鐨勪竴浜涢棶棰橈紝浣嗗叾搴旂敤鑼冨洿鍜屽眬闄愭т篃闇瑕佹牴鎹疄闄呯綉缁滅幆澧冭繘琛屾潈琛°
绛旓細褰撳墠鍜屼粖鍚庝竴涓椂鏈,瑕佸ぇ鍔涙帹杩涒滀笁閫氫袱骞冲彴鈥寤鸿,鍗瀹藉甫缃戠粶鏍℃牎閫氥佷紭璐ㄨ祫婧愮彮鐝氥佺綉缁滃涔犵┖闂翠汉浜洪,寤鸿鏁欒偛璧勬簮鍏叡鏈嶅姟骞冲彴銆佹暀鑲茬鐞嗗叕鍏辨湇鍔″钩鍙般傚姏浜夊疄鐜板洓涓柊绐佺牬,鍗虫暀鑲蹭俊鎭寲鍩虹璁炬柦寤鸿鏂扮獊鐮淬佷紭璐ㄦ暟瀛楁暀鑲茶祫婧愬叡寤哄叡浜柊绐佺牬銆佷俊鎭鎶鏈涓庢暀鑲叉暀瀛︽繁搴﹁瀺鍚堟柊绐佺牬銆佹暀鑲蹭俊鎭寲绉戝鍙戝睍鏈哄埗鐨勬柊绐佺牬銆 -...
绛旓細涓夌涓绘祦鎺ュ叆鏂规:1銆 EOC;2銆 CMTS;3銆丩AN 閲嶇偣: 鍦ㄥ弻鍚戞敼閫犱腑,骞跨數褰撳墠闈复鐫鏈閲嶈鐨勪换鍔℃槸鍔犲揩骞跨數缃戠粶鏁板瓧鍖栧崌绾ф敼閫,鍦ㄩ夋嫨鍙屽悜鏀归鐨勬妧鏈腑,瀵逛簬骞跨數缃戠粶鎺ュ叆杩愯惀鍟嗘潵璇,闇瑕佸仛鐨勬槸鍦ㄤ紬澶氬弻鍚戠綉缁滄敼閫犳柟妗堜腑鎽哥储鍑轰竴鏉￠傚悎鑷繁鐨勯亾璺(閫傚悎鐨勬墠鏄渶濂界殑) 鐢ㄤ竴鍙ヨ瘽鏉ユ荤粨骞跨數鍙屽悜鏀归犺繖涓夌被涓绘祦鎺ュ叆鎶鏈:...
绛旓細鍦ㄥ涓敵璇峰叆缃戠殑鍥藉唴澶栧巶鍟嗙殑璁惧涓,NOKIA D50e 绗竴涓叏闈㈤氳繃妫娴嬩腑蹇冪殑娴嬭瘯,骞惰幏寰椾簡淇℃伅浜т笟閮ㄩ鍙戠殑鐢典俊璁惧鍏ョ綉璁稿彲璇併瀹藉甫鎺ュ叆鎶鏈搴旂敤鍜屽彂灞曟柟鍚戠殑鎺㈣鎺ュ叆缃(AN)鏄氫俊淇℃伅棰嗗煙杩戝勾鎻愬嚭鐨勬蹇点傛帴鍏ョ綉鏄敱涓氬姟鑺傜偣鎺ュ彛(SNI)鍜岀浉鍏崇敤鎴缃戠粶鎺ュ彛(UNI)鍙婁负浼犻佺數淇′笟鍔℃墍闇鎵胯浇鑳藉姏鐨勭郴缁熺粍鎴愮殑,缁廞鎺ュ彛杩涜...
绛旓細LMDS宸ヤ綔鍦28GHz娉㈡闄勮繎锛屽彲鐢ㄥ甯﹁揪鍒1GHz浠ヤ笂锛岄氳繃鑻ュ共涓被浼艰渹绐濈殑鏈嶅姟鍖烘彁渚涗笟鍔★紝姣忎釜鏈嶅姟鍖哄缓绔嬩竴涓熀绔欙紝鐢ㄦ埛杩滅閫氳繃鍩虹珯鎺ュ叆楠ㄥ共缃戙2.鍩轰簬鍏夌紗鐨勫甯﹀厜绾ゆ帴鍏ユ妧鏈 (1)瀹藉甫鏈夋簮鍏夋帴浜猴紟鍦ㄥ悇绉嶅甯﹀厜绾鎺ュ叆缃戞妧鏈涓紝閲囩敤SDH鎶鏈殑鎺ュ叆缃戠郴缁熸槸搴旂敤鏈鏅亶鐨勩傝繖绉嶇郴缁熷彲绉颁箣涓烘湁婧愬厜鎺ヤ汉锛屼富瑕佹槸...
绛旓細鎶鏈叧閿鏄彂灞曢珮閫熷搷搴擲i鍩哄郊瀵煎厜寮鍏,鑰屽埄鐢ㄧ數娉ㄥ叆鎶樺彉鏁堝簲鏋勬垚鐨凷OI鍨婼iO2/Si娉㈠鍏夊紑鍏,鍙互瀹炵幇灏忎簬寰鐨勫厜寮鍏宠繍浣,鏈夋湜瀹炵幇澶ц妯″崟鐗囬泦鎴愩傝但鑼ㄥ疄楠屽鐮斿埗浜嗛熷害鏋侀珮鐨勫厜寮鍏,瀹冨彲鍦160Gbit/s鐨勫厜鏁版嵁娴佷腑鍙栨牱銆傚叾宸ヤ綔鍘熺悊鏄:鍒╃敤娉㈤暱鍒嗗埆涓1302nm銆1312nm鐨勪袱涓鍏夎剦鍐插湪鍗婂浣撳厜鏀惧ぇ鍣ㄤ腑浜х敓鐨勫洓娉...
