{"id":21508,"date":"2015-05-11T10:08:28","date_gmt":"2015-05-11T02:08:28","guid":{"rendered":"https:\/\/case.ntu.edu.tw\/blog\/?p=21508"},"modified":"2018-08-01T15:42:23","modified_gmt":"2018-08-01T07:42:23","slug":"%e3%80%90%e6%8e%a2%e7%b4%a213%e3%80%91%e4%ba%ba%e9%a1%9e%e6%96%87%e6%98%8e%e7%9a%84%e5%9f%ba%e7%9f%b3%ef%bc%8d%ef%bc%8d%e9%80%9a%e8%a8%8a","status":"publish","type":"post","link":"https:\/\/case.ntu.edu.tw\/blog\/?p=21508","title":{"rendered":"\u3010\u63a2\u7d2213\u3011\u4eba\u985e\u6587\u660e\u7684\u57fa\u77f3\uff0d\uff0d\u901a\u8a0a"},"content":{"rendered":"
\"\u5716\u7247\u4f86\u6e90\uff5cwww.pexels.com\"
\u5716\u7247\u4f86\u6e90\uff5cwww.pexels.com<\/figcaption><\/figure>\n

\u8b1b\u5e2b\uff5c<\/strong>\u81fa\u5927\u96fb\u6a5f\u7cfb\u526f\u6559\u6388 \u8449\u4e19\u6210
\n\u64b0\u6587\uff5c<\/strong>\u694a\u4e8e\u8473<\/p>\n

\u300a\u58a8\u5b50\u300b\u96dc\u5b88\u7bc7\uff1a\u300c\u22ef\u671b\u898b\u5bc7\uff0c\u8209\u4e00\u5cf0\uff1b \u5165\u5883\uff0c\u8209\u4e8c\u5cf0\uff1b\u5c04\u59bb\uff0c\u8209\u4e09\u5cf0\uff1b\u90ed\u6703\uff0c\u8209\u56db\u5cf0\u4e8c\u85cd\uff1b\u57ce\u6703\uff0c\u8209\u4e94\u5cf0\u4e94\u85cd \u22ef\u300d<\/p>\n

\u65e9\u5728\u5546\u5468\u6642\u671f\uff0c\u4eba\u5011\u5c31\u5df2\u7d93\u767c\u5c55\u51fa\u4e00\u5957\u9ad8\u901f\u7684\u5149\u901a\u8a0a\u7cfb\u7d71\uff0c\u60a8\u731c\u60f3\u5230\u4e86\u55ce\uff1f\u90a3\u5c31\u662f\u6211\u5011\u8033\u719f\u80fd\u8a73\u7684\u5178\u6545\u2014\u2014\u70fd\u706b\u6232\u8af8\u4faf\u88e1\u4f7f\u7528\u7684\u300c\u70fd\u706b\u53f0\u300d\u3002\u300a\u58a8\u5b50\u300b\u96dc\u5b88\u7bc7\u8a18\u8f09\u9053\uff0c\u908a\u5883\u7684\u58eb\u5175\u5011\u4e00\u65e6\u67e5\u63a2\u5230\u6575\u610f\uff0c\u5c31\u6703\u4ee5\u4e94\u7a2e\u65b9\u5f0f\u76f8\u4e92\u50b3\u905e\u8a0a\u606f\uff0c\u8b93\u8a0a\u606f\u53ef\u4ee5\u5feb\u901f\u5730\u50b3\u905e\u5230\u57ce\u5167\uff0c\u4f7f\u57ce\u6c11\u7522\u751f\u7dca\u6212\u5fc3\u3002\u4f46\u8a0a\u606f\u50b3\u905e\u7684\u904e\u7a0b\u4e2d\uff0c\u90fd\u4e0d\u6703\u51fa\u932f\u55ce\uff1f\u5047\u82e5\u6709\u58eb\u5175\u5224\u8b80\u932f\u8aa4\u8b93\u8a0a\u606f\u76e1\u5931\u539f\u610f\uff0c\u5f88\u53ef\u80fd\u6703\u5c0e\u81f4\u5175\u81e8\u57ce\u4e0b\u751a\u81f3\u662f\u6ec5\u570b\u7684\u5f8c\u679c\u3002<\/p>\n

\u5728\u904e\u53bb\uff0c\u5efa\u7acb\u4e00\u5957\u5b8c\u5584\u7684\u901a\u8a0a\u7cfb\u7d71\u5c0d\u4e00\u500b\u570b\u5bb6\u4f86\u8aaa\u5efa\u7acb\u5341\u5206\u91cd\u8981\uff0c\u5728\u73fe\u4ee3\u4ea6\u662f\u5982\u6b64\u3002\u65e5\u5e38\u751f\u6d3b\u4e2d\uff0c\u6211\u5011\u5e38\u6703\u4f7f\u7528\u5230\u8a31\u591a\u901a\u8a0a\u5668\u6750\uff0c\u4f46\u5f80\u5f80\u5c07\u5176\u904b\u4f5c\u7684\u65b9\u5f0f\u548c\u7d50\u679c\u8996\u70ba\u7406\u6240\u7576\u7136\u3002\u4f8b\u5982\uff1a\u4f7f\u7528\u63d0\u6b3e\u6a5f\u6642\uff0c\u8f38\u5165\u4e4b\u91d1\u9322\u6578\u76ee\u7b49\u65bc\u53d6\u51fa\u7684\u6578\u76ee\uff1b\u4f7f\u7528\u624b\u6a5f\u901a\u8a0a\u8edf\u9ad4(FB\u3001LINE)\u6642\uff0c\u8f38\u5165\u7684\u6587\u5b57\u6703\u4e00\u5b57\u4e0d\u6f0f\u7684\u50b3\u9001\u5230\u5c0d\u65b9\u7684\u624b\u6a5f\u88dd\u7f6e\uff0c\u8af8\u5982\u6b64\u985e\u7684\u4f8b\u5b50\u4e0d\u52dd\u679a\u8209\u3002\u901a\u8a0a\u7cfb\u7d71\u82e5\u8981\u986f\u73fe\u51fa\u5b83\u7684\u50f9\u503c\uff0c\u300c\u53ef\u9760\u5ea6\u300d\u662f\u4e00\u9805\u975e\u5e38\u91cd\u8981\u7684\u6307\u6a19\uff0c\u70ba\u8b93\u901a\u8a0a\u7cfb\u7d71\u4e0d\u51fa\u932f\uff0c\u6211\u5011\u628a\u7cfb\u7d71\u5283\u5206\u6210\u4e03\u7a2e\u5c64\u6b21\u5f7c\u6b64\u9593\u5206\u5de5\u5408\u4f5c\uff0c\u5206\u5225\u70ba\uff1a\u61c9\u7528\u5c64(Application Layer)\u3001\u8868\u73fe\u5c64(Presentation Layer)\u3001\u6703\u8b70\u5c64(Session Layer)\u3001\u50b3\u8f38\u5c64(Transport Layer)\u3001\u7db2\u8def\u5c64(Network Layer)\u3001\u8cc7\u6599\u93c8\u7d50\u5c64(Data Link Layer)\u3001\u5be6\u9ad4\u5c64(Physical Layer)\u3002\u7576\u57fa\u5c64\u7684\u5be6\u9ad4\u5c64(Physical Layer)\u51fa\u932f\u6642\uff0c\u6211\u5011\u6709\u4ec0\u9ebc\u88dc\u6551\u7684\u65b9\u6cd5\uff0c\u6216\u8005\u662f\u8a72\u5982\u4f55\u964d\u4f4e\u51fa\u932f\u7684\u6a5f\u7387\u5462\uff1f<\/p>\n

\u4e00\u3001\u6539\u8b8a\u5929\u7dda\u7684\u8a2d\u8a08\uff1a\u50b3\u7d71\u5929\u7dda\u8207\u6307\u5411\u5f0f\u5929\u7dda<\/strong>
\n\u4f7f\u7528\u901a\u8a0a\u7cfb\u7d71\u63a5\u6536\u8a0a\u606f\u6642\uff0c\u5e38\u6703\u53d7\u5230\u7121\u7dda\u901a\u8a0a\u548c\u96dc\u8a0a\u7684\u5e72\u64fe\uff0c\u70ba\u6e1b\u5c11\u6536\u8a0a\u5e72\u64fe\uff0c\u6307\u5411\u5f0f\u5929\u7dda\u7684\u8a2d\u8a08\u56e0\u61c9\u800c\u751f\u3002\u50b3\u7d71\u5929\u7dda\u767c\u9001\u53ca\u63a5\u6536\u8a0a\u606f\u7684\u6548\u679c\uff0c\u597d\u6bd4\u4e0b\u8ab2\u6642\u4e00\u7fa4\u5b78\u751f\u5728\u6559\u5ba4\u5167\uff0c\u540c\u6642\u9593\u4ee5\u558a\u8a71\u7684\u65b9\u5f0f\u671d\u56db\u9762\u516b\u65b9\u50b3\u905e\u8a0a\u606f\uff0c\u90a3\u9ebc\u6536\u8a0a\u7684\u540c\u5b78\u5728\u63a5\u6536\u8a0a\u606f\u6642\u5c31\u6703\u53d7\u5230\u8a31\u591a\u5e72\u64fe\uff0c\u7121\u6cd5\u807d\u6e05\u695a\u8a0a\u606f\u7684\u5167\u5bb9\u3002\u6307\u5411\u5f0f\u5929\u7dda\u662f\u5229\u7528\u6ce2\u7684\u52a0\u6210\u539f\u7406\u589e\u5f37\u8a0a\u865f\u4f86\u6e90\uff0c\u597d\u50cf\u540c\u5b78\u9593\u4f7f\u7528\u50b3\u8072\u7b52\u50b3\u905e\u8a0a\u606f\uff0c\u53ea\u8981\u5728\u7279\u4e00\u65b9\u5411\u52a0\u5f37\u97f3\u91cf\uff0c\u63a5\u6536\u8005\u540c\u6a23\u53ef\u4ee5\u63a5\u6536\u8a0a\u606f\uff0c\u6bd4\u558a\u8a71\u7684\u65b9\u5f0f\u66f4\u70ba\u6e05\u695a\uff0c\u96d6\u7136\u5468\u570d\u7684\u540c\u5b78\u4f9d\u7136\u9084\u662f\u6703\u807d\u5230\u4ed6\u4eba\u7684\u50b3\u8a71\u5167\u5bb9\uff0c\u4f46\u5f7c\u6b64\u53d7\u5230\u7684\u5e72\u64fe\u4e5f\u8f03\u5c0f\u3002<\/p>\n

\u4e8c\u3001\u904b\u7528\u904e\u5340\u5207\u63db\u7684\u6a5f\u5236\uff1a\u786c\u5207\u63db\u8207\u8edf\u5207\u63db<\/strong>
\n\u904e\u5340\u5207\u63db(Handover,Handoff)\u662f\u6307\u8a0a\u865f\u7531\u7532\u57fa\u5730\u53f0\u5207\u63db\u5230\u4e59\u57fa\u5730\u53f0\u7684\u904e\u7a0b\uff0c\u5207\u63db\u7684\u7a2e\u985e\u53c8\u5206\u70ba\u786c\u5207\u63db\u8207\u8edf\u5207\u63db\u3002\u786c\u5207\u63db\uff08Hard Handover\uff09\u662f\u6307\u5c07\u539f\u5148\u9023\u63a5\u7684\u8a0a\u865f\u65b7\u958b\u5f8c\uff0c\u518d\u9023\u63a5\u65b0\u7684\u8a0a\u865f\u6e90\uff0c\u800c\u8edf\u5207\u63db\uff08Soft Handover\uff09\u662f\u6307\u5728\u65b7\u958b\u8a0a\u865f\u6e90\u4e4b\u524d\uff0c\u5148\u5617\u8a66\u8207\u5176\u4ed6\u5340\u57df\u7684\u8a0a\u865f\u6e90\u9023\u63a5\u518d\u65b7\u958b\u539f\u6709\u8a0a\u865f\u6e90\u3002\u904b\u7528\u751f\u6d3b\u4e2d\u7c21\u55ae\u7684\u4f8b\u5b50\u6bd4\u55bb\uff0c\u6211\u5011\u53ef\u4ee5\u628a\u786c\u5207\u63db\u60f3\u50cf\u6210\u4e00\u4f4d\u6f22\u5b50\uff0c\u4e00\u6b21\u53ea\u6559\u4e00\u500b\u5973\u670b\u53cb\uff0c\u518d\u627e\u4e0b\u4e00\u500b\u5973\u670b\u53cb\u524d\uff0c\u4e00\u5b9a\u6703\u548c\u73fe\u4efb\u5973\u53cb\u5206\u624b\uff0c\u800c\u8edf\u5207\u63db\u5c31\u6bd4\u8f03\u4e0d\u4e00\u6a23\uff0c\u4ed6\u6bd4\u8f03\u82b1\u5fc3\uff0c\u7a69\u5b9a\u4ea4\u5f80\u7684\u72c0\u614b\u4e0b\uff0c\u4f9d\u7136\u6703\u548c\u4e0b\u4e00\u4f4d\u5c0d\u8c61\u4f86\u5f80\u3002<\/p>\n

\u4e09\u3001\u5075\u6e2c\u8207\u66f4\u6b63\u932f\u8aa4\u7684\u901a\u9053\u7de8\u78bc<\/strong>
\n\u5047\u8a2d\u4eca\u5929\u6211\u5011\u5f9e\u7532\u5730\u50b3\u905e\u4e09\u500b\u4f4d\u5143\u7684\u8cc7\u6599\u7d66\u4e59\u5730\uff0c\u63a5\u6536\u8005\u53ef\u4ee5\u7531\u63a5\u6536\u5230\u7684\u8a0a\u606f\u5224\u5225\u8cc7\u8a0a\u662f\u5426\u6b63\u78ba\u55ce\uff1f\u7b54\u6848\u662f\u5426\u5b9a\u7684\uff0c\u90a3\u9ebc\u8a72\u5982\u4f55\u4fdd\u969c\u8cc7\u6599\u7684\u53ef\u9760\u6027\u5462\uff1f\u5176\u5be6\u6211\u5011\u53ef\u4ee5\u900f\u904e\u901a\u9053\u7de8\u78bc(Channel Coding)\u5728\u539f\u5148\u50b3\u905e\u7684\u8a0a\u606f\u88e1\u52a0\u5165\u4fdd\u8b77\u78bc\uff0c\u5373\u4f7f\u8a0a\u606f\u50b3\u905e\u932f\u8aa4\uff0c\u6211\u5011\u4f9d\u7136\u80fd\u5224\u5225\u8cc7\u6599\u7684\u6b63\u78ba\u4fe1\uff0c\u4e26\u5373\u6642\u6821\u6b63\u8a0a\u606f\u3002\u904b\u7528\u5169\u500b\u5bb6\u5ead\u6545\u4e8b\u5411\u5404\u4f4d\u89e3\u8aaa\u7b87\u4e2d\u7684\u5de7\u5999\u3002<\/p>\n

\u67d0\u500b\u5947\u602a\u7684\u5bb6\u5ead\uff0c\u8001\u7238\u5c07\u4e09\u5144\u5f1f\u547d\u540d\u70ba\uff1a\u8449\u4e19\u6210\u3001\u8449\u4e19\u620d\u3001\u8449\u4e19\u620a\uff0c\u4e09\u5144\u5f1f\u4e2d\u8449\u4e19\u620a\u7684\u8868\u73fe\u6700\u70ba\u512a\u79c0\uff0c\u8001\u5927\u8449\u4e19\u6210\u8207\u8001\u4e8c\u8449\u4e19\u620d\u7684\u5b78\u696d\u6210\u7e3e\u537b\u4ee4\u4eba\u582a\u6182\uff0c\u800c\u4e14\u5e38\u5e38\u8003\u96f6\u5206\u7684\u8449\u4e19\u6210\u8207\u8449\u4e19\u620d\u5e38\u5e38\u6703\u5beb\u932f\u540d\u5b57\uff0c\u6c38\u9060\u90fd\u6703\u5fd8\u8a18\u300c\u6210\u300d\u548c\u300c\u620d\u300d\u4e2d\u9593\u6709\u4e00\u5283\u3002\u7576\u5b78\u6821\u5bc4\u9001\u6210\u7e3e\u55ae\u6642\uff0c\u8001\u7238\u7e3d\u662f\u6536\u5230\u8449\u4e19\u620a\u96f6\u5206\u7684\u8003\u5377\uff0c\u8aa4\u4ee5\u70ba\u8449\u4e19\u620a\u662f\u6700\u4e0d\u7528\u529f\u7684\u5b69\u5b50\uff0c\u50cf\u9019\u6a23\u5b50\u7684\u60c5\u6cc1\uff0c\u6536\u5230\u8a0a\u606f\u7684\u8001\u7238\u6709\u8fa6\u6cd5\u77e5\u9053\u662f\u8ab0\u8003\u96f6\u5206\u55ce\uff1f<\/p>\n

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\u25cf\u4eba\u985e\u6587\u660e\u7684\u57fa\u77f3<\/strong>
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--\u672c\u6587\u6574\u7406\u81ea\uff1a104\/4\/25 \u7531\u8449\u4e19\u6210\u8001\u5e2b\u5728\u81fa\u5927\u61c9\u529b\u6240\u570b\u969b\u6f14\u8b1b\u5ef3\u6240\u4e3b\u8b1b\u4e4b\u300c\u624b\u6a5f\uff0c\u4f60\u600e\u9ebc\u90fd\u4e0d\u6703\u932f\u300d\u6f14\u8b1b\u5167\u5bb9\uff1e\uff1e\u73fe\u5834\u5168\u7a0b\u5f71\u97f3<\/a><\/strong><\/p>\n

 <\/p>\n

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