{"id":1239,"date":"2022-05-12T03:26:28","date_gmt":"2022-05-11T19:26:28","guid":{"rendered":"http:\/\/www.xzclass.com\/?p=1239"},"modified":"2022-05-12T13:31:38","modified_gmt":"2022-05-12T05:31:38","slug":"%e4%b8%ba%e4%ba%86%e8%a7%a3%e5%86%b3%e7%bd%91%e7%bb%9c%e6%8b%a5%e5%a1%9e%ef%bc%8cwi-fi-6%e9%87%87%e7%94%a8%e4%ba%86%e5%93%aa%e4%ba%9b%e9%bb%91%e7%a7%91%e6%8a%80%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/www.xzclass.com\/?p=1239","title":{"rendered":"\u4e3a\u4e86\u89e3\u51b3\u7f51\u7edc\u62e5\u585e\uff0cWi-Fi 6\u91c7\u7528\u4e86\u54ea\u4e9b\u9ed1\u79d1\u6280\uff1f"},"content":{"rendered":"

\u5728\u4e0a\u4e00\u671f\u7684\u6587\u7ae0\uff08<\/span>\u94fe\u63a5<\/a>\uff09<\/span>\u4e2d\uff0c\u6211\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u4e86Wi-Fi\u7684\u4fe1\u9053\u7ade\u4e89\u63a5\u5165\u539f\u7406\u3002Wi-Fi\u8bbe\u5907\u7684\u63a5\u5165\uff0c\u6838\u5fc3\u5c31\u5728\u4e8e\u8f7d\u6ce2\u4fa6\u542c\u591a\u8def\u8bbf\u95ee\/\u78b0\u649e\u907f\u514d\uff08CSMA\/CA\uff09\u3002<\/span><\/p>\n


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\u8fd9\u4e2a\u5148\u542c\u540e\u8bf4\u7684\u673a\u5236\uff0c\u4ece1997\u5e74\u7684\u7b2c\u4e00\u4ee3Wi-Fi\uff088<\/span>02.1<\/span>1<\/span>\uff09\u5c31\u5f00\u59cb\u4f7f\u7528\u3002\u7136\u800c\uff0c20\u591a\u5e74\u524d\u7684\u65e0\u7ebf\u7f51\u7edc\u8bbe\u5907\u5f88\u5c11\uff0c\u6ca1\u6709\u4eba\u4f1a\u53bb\u8003\u8651\uff0c\u5f53\u8bbe\u5907\u589e\u591a\u65f6\uff0c\u7ade\u4e89\u5165\u7f51\u5e26\u6765\u7684\u7f51\u7edc\u62e5\u585e\u95ee\u9898\u3002<\/span><\/p>\n


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Wi-Fi\u7684\u771f\u6b63\u666e\u53ca\uff0c\u662f\u4ece2008\u5e74\u7684Wi-Fi 4\uff08802.11n\uff09<\/span>\u5f00\u59cb\u3002\u53ef\u4ee5\u8bf4\uff0c\u4ece\u90a3\u65f6\u8d77\uff0cWi-Fi\u771f\u6b63\u6210\u4e3a\u5bb6\u5ead\u548c\u4f01\u4e1a\u4e92\u8054\u7f51\u63a5\u5165\u6700\u5e38\u89c1\u7684\u65b9\u5f0f\u3002\u652f\u6301Wi-Fi\u7684\u8bbe\u5907\u578b\u53f7\u6570\u91cf\uff0c\u4e5f\u6210\u6307\u6570\u4e0a\u5347\u3002<\/span><\/p>\n


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\u5982\u4eca\uff0cWi-Fi\u8bbe\u5907\u5728\u6211\u4eec\u7684\u751f\u6d3b\u4e2d\u65e0\u5904\u4e0d\u5728\u3002\u968f\u4fbf\u6253\u5f00\u5bb6\u91cc\u7684\u65e0\u7ebf\u8def\u7531\u7ba1\u7406\u754c\u9762\uff0c\u53ef\u80fd\u5c31\u6709\u4e0d\u4e0b10\u4e2aWi-Fi\u8bbe\u5907\u540c\u65f6\u5728\u7ebf\u3002
<\/span><\/p>\n

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\u8bbe\u5907\u6570\u91cf\u7684\u589e\u52a0\uff0c\u5bfc\u81f4\u4e86\u7f51\u7edc\u62e5\u585e\u3001\u6027\u80fd\u4e0b\u964d\u3001\u5ef6\u65f6\u5347\u9ad8\u7b49\u95ee\u9898\u3002\u8fd9\u4e9b\u95ee\u9898\u5728Wi-Fi 5\uff08802.11 ac\uff09<\/span>\u65f6\u4ee3\u53d8\u5f97\u6108\u52a0\u4e25\u91cd\u3002\u6240\u4ee5\uff0c\u5728\u8bbe\u8ba1Wi-Fi 6\uff08802.11 ax\uff09<\/span>\u65f6\uff0c\u4e13\u5bb6\u4eec\u4e13\u95e8\u9488\u5bf9\u7f51\u7edc\u62e5\u585e\u95ee\u9898<\/span>\u8fdb\u884c\u4e86\u6539\u8fdb\u548c\u521b\u65b0\u3002<\/span><\/p>\n


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

\u90a3\u4e48\uff0cWi-Fi 6\u662f\u901a\u8fc7\u54ea\u4e9b\u65b0\u6280\u672f\u6765\u63d0\u9ad8\u65e0\u7ebf\u4fe1\u9053\u5bb9\u91cf\u7684\u5462\uff1f<\/span><\/p>\n


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<\/p>\n

\u2588 <\/strong><\/span><\/strong>\u6b63\u4ea4\u9891\u5206\u591a\u5740OFDMA<\/strong><\/span><\/p>\n

<\/p>\n

\u719f\u6089Wi-Fi\u7684\u670b\u53cb\u4eec\u5e94\u8be5\u77e5\u9053\uff0cWi-Fi\u7684\u7a7a\u53e3\u91c7\u7528\u4e86\u6b63\u4ea4\u9891\u5206\u590d\u7528\uff08OFDM\uff09<\/span><\/strong>\u7684\u8c03\u5236\u65b9\u5f0f\uff0c\u5373\u6574\u4e2a\u5e26\u5bbd\u7531\u76f8\u4e92\u6b63\u4ea4\u7684\u5b50\u8f7d\u6ce2\u7ec4\u6210\u3002<\/span><\/p>\n


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

\u5728Wi-Fi 6\u4e2d\uff0c802.11\u5de5\u4f5c\u5c0f\u7ec4\u4eceLTE\u4e0a\u5f15\u5165\u4e86OFDMA<\/strong>\u7684\u63a5\u5165\u65b9\u5f0f\u3002\u5c31\u591a\u4e86\u8fd9\u4e48\u4e00\u4e2a\u201cA\u201d\u5b57\uff0c\u53ef\u4ee5\u8bf4\u662f\u7ed9\u7f51\u7edc\u5bb9\u91cf\u5e26\u6765\u4e86\u8d28\u53d8\u3002<\/span><\/p>\n


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\u5982\u4e0b\u9762\u5de6\u8fb9\u56fe\u6240\u793a\uff0c\u57fa\u4e8eWi-Fi 5\u7684OFDM\u5728\u4efb\u610f\u4e00\u4e2a\u65f6\u6bb5\uff0c\u9891\u9053\u4e2d\u7684\u6240\u6709\u5e26\u5bbd\u53ea\u80fd\u5206\u914d\u7ed9\u4e00\u4e2a\u7528\u6237\uff0c\u54ea\u6015\u8fd9\u4e2a\u7528\u6237\u7684\u6570\u636e\u9700\u6c42\u5e76\u4e0d\u9700\u8981\u5360\u7528\u5230\u5168\u90e8\u5e26\u5bbd\u3002<\/span><\/p>\n


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

\u800c\u5176\u4ed6\u7528\u6237\u63a5\u5165\u7f51\u7edc\u65f6\uff0c\u9700\u8981\u7b49\u5f85\u4e0b\u4e00\u4e2a\u53d1\u9001\u673a\u4f1a\u7a97\u53e3\uff08TXOP\uff09\u3002\u8fd9\u5728\u4fe1\u9053\u8d44\u6e90\u7684\u4f7f\u7528\u4e0a\uff0c\u662f\u975e\u5e38\u4f4e\u6548\u7684\uff0c\u5c24\u5176\u662f\u8bbe\u5907\u663e\u8457\u589e\u591a\u65f6\u3002<\/span><\/p>\n


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

<\/p>\n

\u56fe 1 OFDM\u4e0eOFDMA\u5bf9\u6bd4<\/span><\/p>\n

<\/p>\n

OFDMA\u6539\u53d8\u4e86\u8fd9\u4e00\u70b9\u3002OFDMA\u901a\u8fc7\u5c06\u5b50\u8f7d\u6ce2\u7ec4\u6210\u4e00\u4e2a\u4e2a\u8d44\u6e90\u5355\u5143\uff08RU\uff09\u7684\u65b9\u5f0f\uff0c\u9891\u9053\u53ef\u4ee5\u628a\u77ac\u65f6\u5e26\u5bbd\u52a8\u6001\u5212\u5206\u7ed9\u4e0d\u540c\u7684\u7528\u6237\u3002<\/span><\/p>\n


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\u6bd4\u5982\u4e0a\u56fe\u53f3\u8fb9\u8fd9\u5f20\u56fe\u4e2d\uff0c\u7b2c\u4e00\u4e2aTXOP\u5206\u914d\u7ed9\u4e86\u7528\u62370\u548c\u7528\u62371\uff0c\u7b2c\u4e8c\u4e2aOP\u5168\u90e8\u5206\u7ed9\u4e86\u7528\u62372\uff0c\u63a5\u7740\u7b2c\u4e09\u4e2aTXOP\u4e2d\uff0c\u8d44\u6e90\u88ab\u5e73\u5747\u5206\u914d\u7ed9\u4e86\u56db\u4f4d\u7528\u6237\u3002<\/span><\/p>\n

<\/p>\n

OFDMA\u4e00\u4e0b\u5b50\u63d0\u9ad8\u4e86\u77ac\u65f6\u652f\u6301\u7684\u7528\u6237\u6570\u91cf\u3002<\/span><\/p>\n


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

<\/span>\u4ee5\u4e0b\u56fe\u768420MHz\u5e26\u5bbd\u4e3a\u4f8b\uff0c\u7ecf\u8fc7\u5b50\u8f7d\u6ce2\u5206\u914d\uff0c20MHz\u53ef\u4ee5\u6700\u591a\u652f\u63019\u4e2a\u8bbe\u5907\u540c\u65f6\u63a5\u5165\uff0c40MHz\u5219\u53ef\u4ee5\u652f\u630118\u4e2a\u8bbe\u5907\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002<\/span><\/p>\n


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<\/p>\n

\u56fe 2 \u91c7\u7528OFDMA\u768420MHz\u4e0b\u53ef\u7528\u7684\u8d44\u6e90\u5355\u5143\u6570\u91cf<\/span><\/p>\n

\uff08Wi-Fi 6\u4e2d\u6bcf\u4e2a\u5b50\u8f7d\u6ce2\u662f78.125khz\uff0c20MHz\u5c31\u662f256\u4e2a\u5b50\u8f7d\u6ce2\u30026 Edge\u8868\u793a\u8ddd\u79bb\u8fb9\u7f18\u67096\u4e2a\u5b50\u8f7d\u6ce2\u4f5c\u4e3a\u4fdd\u62a4\u5e26\u3002\uff09
<\/span><\/p>\n

<\/p>\n

\u53ef\u4ee5<\/span>\u8bf4\uff0c<\/span>OFDMA\u5bf9<\/span>Wi-Fi\u4fe1\u9053\u7684\u5bb9\u91cf\u5e26\u6765\u4e86\u8d28\u53d8\u3002<\/span><\/p>\n


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

<\/p>\n

\u2588 <\/strong><\/span><\/strong>BSS coloring<\/strong><\/span><\/p>\n

<\/p>\n

\u5728\u8fc7\u53bb\u7684Wi-Fi\u6280\u672f\u4e2d\uff0c\u5c0f\u533a\u95f4\u540c\u9891\u5e72\u6270\uff08Co-Channel Interference\uff0cCCI\uff09<\/strong>\u662f\u5f71\u54cd\u4fe1\u9053\u5bb9\u91cf\u7684\u53e6\u4e00\u4e2a\u91cd\u8981\u56e0\u7d20\u3002<\/span><\/p>\n


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

\u4e0a\u7bc7\u6587\u7ae0\u63d0\u5230\uff0cCSMA\/CA\u7684\u6838\u5fc3\u662f\u91c7\u7528\u5148\u542c\u540e\u8bf4\uff08listen before talk\uff0cLBT\uff09<\/strong>\uff0c\u8bbe\u5907\u5148\u5bf9\u65e0\u7ebf\u4fe1\u9053\u8fdb\u884c\u76d1\u542c\uff0c\u5728\u786e\u4fdd\u6ca1\u6709\u88ab\u5360\u7528\u7684\u60c5\u51b5\u4e0b\uff0c\u53d1\u9001\u6570\u636e\u3002<\/span><\/p>\n


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\u5728\u591aAP mesh\u7ec4\u7f51\uff08AP\uff0cAccess Point\uff0c\u65e0\u7ebf\u63a5\u5165\u70b9\uff09\u7684\u60c5\u51b5\u4e0b\uff0c\u5c0f\u533a\u5185\u7684\u8bbe\u5907\u4f1a\u6536\u542c\u5230\u4e34\u8fd1\u540c\u9891\u9053\u7684\u5c0f\u533a\u7684\u5e72\u6270\u4fe1\u53f7\uff0c\u5bfc\u81f4\u8bbe\u5907\u4f1a\u8bef\u8ba4\u4e3a\u672c\u5c0f\u533a\u6b64\u65f6\u7684\u65e0\u7ebf\u4fe1\u9053\u6b63\u5728\u88ab\u5360\u7528\uff0c\u4e8e\u662f\u505c\u6b62\u53d1\u9001\u3002<\/span><\/p>\n


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

\u8fd9\u79cd\u5e72\u6270\uff0c\u5728\u7f51\u7edc\u6ca1\u6709\u4f18\u5316\u597d\u6216\u8005\u53ef\u7528\u7684\u9891\u9053\u6570\u91cf\u5f88\u5c11\u7684\u60c5\u51b5\u4e0b\uff0c\u4f1a\u663e\u8457\u964d\u4f4e\u7f51\u7edc\u5bb9\u91cf\u3002<\/span><\/p>\n


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

\u5982\u4e0b\u56fe\u6240\u793a\uff0c4\u4e2aWi-Fi AP\u91c7\u7528\u4e86\u4e09\u9891\u9053\u7ec4\u7f51\u3002\u4f46\u7531\u4e8e\u53ef\u7528\u7684\u9891\u9053\u53ea\u6709\u4e09\u4e2a\uff0cAP1\u548cAP2\u4e0d\u5f97\u4e0d\u90fd\u90e8\u7f72\u5728\u540c\u6837\u7684\u9891\u9053Channel 6\u4e0a\uff0c\u8fd9\u65f6AP2\u7684\u4fe1\u53f7\u5bf9\u4e8e\u5f52\u5c5e\u4e8eAP1\u4e2d\u7684\u7528\u6237\u8bbe\u5907\u6765\u8bf4\u5c31\u662f\u5e72\u6270\u2014\u2014Overlapped Basic Service Set\uff08OBSS\uff0c\u91cd\u53e0\u57fa\u672c\u670d\u52a1\u5355\u5143\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u9891\u7387\u76f8\u540c\u7684\u91cd\u53e0\u5c0f\u533a\uff09<\/strong>\u3002<\/span><\/p>\n


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<\/p>\n

\u56fe 3 \u4e09\u9891\u7ec4\u7f51\u4e0b\u7684\u540c\u9891\u9053\u5e72\u6270\u573a\u666f<\/span><\/p>\n

<\/p>\n

\u5f53\u7528\u6237\u8bbe\u5907\u4e0eAP1\u8fdb\u884c\u901a\u4fe1\u65f6\uff0c\u7531\u4e8e\u8bbe\u5907\u6536\u5230\u540c\u9891\u7684AP2\u7684\u5e72\u6270\u4fe1\u53f7\uff0c\u7528\u6237\u8bbe\u5907\u4f1a\u8bef\u8ba4\u4e3aAP1\u7684\u5c0f\u533a\u6b64\u65f6\u6b63\u5728\u88ab\u5c0f\u533a\u5185\u5176\u4ed6\u8bbe\u5907\u5360\u7528\uff0c\u4e8e\u662f\u7b49\u5f85\u4e0b\u4e00\u4e2a\u65f6\u95f4\u6bb5\u53d1\u9001\u3002\u8fd9\u4e48\u4e00\u6765\uff0c\u7f51\u7edc\u6027\u80fd\u5c31\u964d\u4f4e\u4e86\u3002<\/span><\/p>\n


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\u4e0d\u4ec5\u4ec5\u662f\u591a\u5c0f\u533a\u7ec4\u7f51\uff0c\u8fd9\u79cd\u5e72\u6270\u95ee\u9898\u4e5f\u4f1a\u51fa\u73b0\u5728Wi-Fi AP\u5f88\u9760\u8fd1\u7684\u60c5\u51b5\u4e0b\u3002\u6bd4\u5982\u4f60\u5bb6\u4e2d\u867d\u7136\u53ea\u6709\u4e00\u53f0\u65e0\u7ebfAP\uff0c\u4f46\u5982\u679c\u9694\u58c1\u90bb\u5c45\u4e5f\u6709AP\u8ddf\u4f60\u90e8\u7f72\u5728\u4e00\u6837\u7684\u9891\u9053\u4e0a\uff0cCCI\u4e5f\u4f1a\u5bfc\u81f4\u4f60\u7684\u8bbe\u5907\u63a5\u5165\u6210\u529f\u7387\u4e0b\u964d\u3002<\/span><\/p>\n


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\u53ef\u60b2\u7684\u662f\uff0c\u5927\u591a\u6570\u5382\u5546\u5728\u8bbe\u5907\u51fa\u5382\u65f6\uff0c\u90fd\u5c06Wi-Fi AP\u7684\u9ed8\u8ba4\u9891\u9053\u653e\u5728\u7b2c\u4e00\u4e2a\u9891\u9053\u4e0a\u3002\u8fd9\u6837\u7684\u8bdd\uff0c\u5e72\u6270\u95ee\u9898\u5c31\u66f4\u4e25\u91cd\u4e86\u3002\u5982\u679c\u4f60\u53d1\u73b0\u8fd9\u79cd\u95ee\u9898\uff0c\u4e0d\u59a8\u66f4\u6539\u4e00\u4e0b\u5bb6\u91ccWi-Fi AP\u7684\u9891\u9053\uff0c\u8fd9\u6837\u4f1a\u660e\u663e\u51cf\u5c11\u5e72\u6270\uff0c\u63d0\u5347\u7f51\u901f\u3002<\/span><\/p>\n

<\/p>\n

Wi-Fi 6\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u662f\u901a\u8fc7\u5728MAC\u5c42\u5f15\u5165\u4e86BSS Coloring\uff08\u5c0f\u533a\u989c\u8272\u7f16\u7801\uff09\u6280\u672f<\/strong>\uff0c\u6765\u533a\u5206\u672c\u5c0f\u533a\u548c\u5e72\u6270\u5c0f\u533a\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u540c\u9891\u9053\u5de5\u4f5c\uff0c\u5b58\u5728\u76f8\u4e92\u5e72\u6270\u7684AP\uff0c\u4f1a\u9644\u4e0a\u4e0d\u540c\u7684\u989c\u8272\u7801<\/strong>\uff0c\u52a0\u4ee5\u533a\u5206\u3002<\/span><\/p>\n


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

\u5f53\u7528\u6237\u8bbe\u5907\u6536\u5230AP\u4fe1\u53f7\u540e\uff0c\u4f1a\u5bf9\u6bd4\u5176\u6536\u5230\u7684\u989c\u8272\u4e0e\u76ee\u524d\u5173\u8054\u7684AP\u989c\u8272\u662f\u5426\u4e00\u81f4\u3002\u989c\u8272\u4e00\u81f4\u65f6\uff0c\u7528\u6237\u624d\u4f1a\u8ba4\u4e3a\u4fe1\u53f7\u662f\u672c\u5c0f\u533a\u5185\u4fe1\u53f7\u3002<\/span><\/p>\n


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

\u5982\u679c\u6536\u5230\u7684\u4fe1\u53f7\u7684\u989c\u8272\u4e0e\u5173\u8054\u7684AP\u989c\u8272\u4e0d\u540c\uff0c\u7528\u6237\u5224\u5b9a\u8be5\u4fe1\u53f7\u5c5e\u4e8e\u5e72\u6270\u4fe1\u53f7\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u7531\u4e8e\u91c7\u7528\u4e86\u4e0d\u540c\u989c\u8272\u7801\uff0c\u7eff\u8272\u5c0f\u533a\u7684\u9891\u90531\u4e0d\u518d\u53d7\u5230\u4e34\u8fd1\u5c0f\u533a\u9891\u90531\uff08\u84dd\u8272\u548c\u7ea2\u8272\uff09\u7684\u5e72\u6270\u3002<\/span><\/p>\n

<\/p>\n

<\/p>\n

\u56fe 4 Wi-Fi 6\u4e2d\u7684BSS Coloring\u6280\u672f<\/span><\/p>\n


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

\u770b\u5230\u8fd9\u91cc\u4f60\u53ef\u80fd\u8981\u95ee\uff0c\u5c31\u7b97\u6807\u4e86\u8272\uff0c\u4f46\u5e72\u6270\u4fe1\u53f7\u8fd8\u662f\u4f1a\u6536\u5230\u554a\uff0c\u600e\u4e48\u89e3\u51b3\u5e72\u6270\u5462\uff1f<\/span><\/p>\n


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

\u4e0a\u7bc7\u6587\u7ae0\u6211\u4eec\u8bf4\u8fc7\uff0cWi-Fi\u4e2d\u7684\u5148\u542c\u540e\u8bf4\uff0c\u5206\u4e24\u4e2a\u68c0\u6d4b\u95e8\u9650\uff0c\u5206\u522b\u68c0\u6d4b\u4fe1\u53f7\u529f\u7387\uff08SD\uff09\u548c\u4fe1\u9053\u80fd\u91cf\uff08ED\uff09\u3002\u8fd9\u4e24\u4e2a\u95e8\u9650\u5728\u4ee5\u5f80\u7684Wi-Fi\u6280\u672f\u6807\u51c6\u548c\u8bbe\u5907\u4e2d\uff0c\u662f\u56fa\u5b9a\u7684\uff0c\u65e0\u6cd5\u6709\u6548\u533a\u5206\u662f\u672c\u5c0f\u533a\u7684\u4fe1\u53f7\u8fd8\u662f\u4e34\u8fd1\u5c0f\u533a\u7684\u4fe1\u53f7\uff08\u4e0b\u56fe\u5de6\u8fb9\uff09\u3002<\/span><\/p>\n


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

<\/p>\n

\u56fe 5 \u5dee\u5f02\u5316\u4fe1\u53f7\u68c0\u6d4b\u95e8\u9650\u548c\u52a8\u6001\u8c03\u6574<\/span><\/p>\n

<\/p>\n

Wi-Fi 6\u91c7\u7528\u4e86\u5dee\u5f02\u5316\u68c0\u6d4b\u95e8\u9650<\/strong>\uff0c\u7ed9\u4e0d\u540c\u989c\u8272\u7801\u7684\u5c0f\u533a\u5206\u914d\u4e0d\u540c\u7684\u68c0\u6d4b\u95e8\u9650\uff08\u4e0a\u56fe\u53f3\u8fb9\uff09\u3002<\/span><\/p>\n


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

\u5177\u4f53\u7684\u65b9\u6cd5\u662f\uff0c\u5c06\u4f7f\u7528\u540c\u9891\u9053\u7684\u5e72\u6270\u5c0f\u533a\u4fe1\u53f7\u68c0\u6d4b\u95e8\u9650\u5347\u9ad8\uff0c\u540c\u65f6\u628a\u540c\u8272\u7684\u672c\u5c0f\u533a\u5185\u4fe1\u53f7\u68c0\u6d4b\u95e8\u9650\u964d\u4f4e\u3002\u901a\u5e38\u5468\u8fb9\u5c0f\u533a\u7684\u5e72\u6270\u4fe1\u53f7\u7531\u4e8e\u4f20\u64ad\u8870\u51cf\uff0c\u4fe1\u53f7\u5f3a\u5ea6\u4f1a\u8f83\u4f4e\uff0c\u4e0d\u4f1a\u8d85\u8fc7\u76f8\u5bf9\u8f83\u9ad8\u5e45\u5ea6\u7684\u68c0\u6d4b\u95e8\u9650\u3002\u800c\u672c\u5c0f\u533a\u5185\u4fe1\u53f7\u7528\u8f83\u4f4e\u7684\u68c0\u6d4b\uff0c\u6709\u52a9\u4e8e\u63d0\u9ad8\u68c0\u6d4b\u7075\u654f\u5ea6\u3002<\/span><\/p>\n

<\/p>\n

\u901a\u8fc7\u8fd9\u79cd\u5dee\u5f02\u5316\u7684\u95e8\u9650\u68c0\u6d4b\uff0c\u4fe1\u9053\u5c31\u4e0d\u4f1a\u88ab\u8bef\u5224\u4e3a\u88ab\u5360\u7528\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u4fe1\u9053\u5bb9\u91cf\u3002<\/span><\/p>\n


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

\u4fe1\u53f7\u68c0\u6d4b\u95e8\u9650\u540c\u65f6\u53ef\u4ee5\u968f\u7740\u7f51\u7edc\u73af\u5883\u8fdb\u884c\u52a8\u6001\u8c03\u6574\uff0c\u53ef\u4ee5\u8bf4\u662f\u4e00\u79cd\u81ea\u611f\u77e5\u7f51\u7edc<\/strong>\u7684\u5b9e\u73b0\u5f62\u5f0f\u3002<\/span><\/p>\n

<\/p>\n

<\/p>\n

\u2588 <\/strong><\/span><\/strong>\u591a\u7528\u6237\u534f\u8c03\uff0c\u591a\u8fdb\u591a\u51fa\uff08MU-MIMO\uff09<\/strong><\/span><\/p>\n

<\/p>\n

\u5355\u7528\u6237\u591a\u8def\u8f93\u5165\u8f93\u51fa\uff08SU-MIMO\uff09\uff0c\u4eceWi-Fi 5\u5f00\u59cb\u88ab\u5f15\u5165\u3002AP\u548c\u7ec8\u7aef\u4f7f\u7528\u591a\u8def\u5929\u7ebf\u6765\u53d1\u9001\u548c\u63a5\u6536\uff0c\u591a\u8def\u5929\u7ebf\u4f7f\u7528\u540c\u9891\u4f46\u5f7c\u6b64\u6b63\u4ea4\u7684\u4fe1\u53f7\u6765\u63d0\u9ad8\u4fe1\u9053\u4f7f\u7528\u7387\u3002<\/span><\/p>\n


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

\u624b\u673a\u4e00\u822c\u4f1a\u7528\u4e24\u6839Wi-Fi\u5929\u7ebf\uff0c\u652f\u63012×2 MIMO\u2014\u2014\u4e24\u8def\u53d1\u9001\u548c\u63a5\u6536\u3002<\/span><\/p>\n


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

AP\u7531\u4e8e\u4e0d\u53d7\u4f53\u79ef\u548c\u7535\u6e90\u9650\u5236\uff0c\u53ef\u4ee5\u505a\u52304\u751a\u81f38\u6839\u5929\u7ebf\u3002MU-MIMO\u4e2d\u7684MU\u6307\u7684\u662f\u591a\u7528\u6237\uff08Multiple Users\uff09\uff0c\u4e00\u4e2aAP\u4f7f\u7528\u540c\u6837\u7684\u4fe1\u9053\u6765\u670d\u52a1\u591a\u4e2a\u4e0d\u540c\u7528\u6237\uff0c\u6bcf\u8def\u7528\u6237\u5206\u914d1-2\u6839\u5929\u7ebf\uff0c\u6bcf\u6839\u5929\u7ebf\u4e4b\u95f4\u4fe1\u53f7\u6b63\u4ea4\uff0c\u4e92\u4e0d\u5e72\u6270\u3002<\/span><\/p>\n


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

<\/p>\n

\u56fe 6 AP\u4f7f\u7528MU-MIMO\u6765\u590d\u7528\u4fe1\u9053<\/span><\/p>\n

<\/p>\n

Wi-Fi 5\u867d\u7136\u5728wave 2\u7684\u6807\u51c6\u66f4\u65b0\u4e2d\u589e\u52a0\u4e86\u4e0b\u884cMU-MIMO\uff0c\u4f46\u5927\u591a\u6570\u5382\u5546\u5e76\u6ca1\u6709\u5728\u8bbe\u5907\u4e0a\u53bb\u5b9e\u73b0MU-MIMO\u529f\u80fd\u3002<\/span><\/p>\n


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

\u5728Wi-Fi 6\u65f6\u4ee3\uff0cMU-MIMO\u7ec8\u4e8e\u5f97\u5230\u4e86\u5e94\u7528\uff0c\u5e76\u88ab\u6269\u5c55\u5230\u4e86\u4e0a\u884c\uff0c\u5373\u591a\u7ec8\u7aef\u8bbe\u5907\u4e0d\u4ec5\u53ef\u4ee5\u540c\u65f6\u63a5\u6536\uff0c\u4e5f\u53ef\u4ee5\u5229\u7528\u76f8\u540c\u4fe1\u9053\u540c\u65f6\u5411AP\u53d1\u9001\u6570\u636e\u3002<\/span><\/p>\n

<\/p>\n

\u6709\u4e86MU-MIMO\u548cOFDMA\uff0c\u90a3\u4e48\u81ea\u7136\u5c31\u4f1a\u60f3\u5230\uff1a\u5982\u679cAP\u80fd\u591f\u534f\u8c03\u5176\u670d\u52a1\u7684\u591a\u7528\u6237\u540c\u65f6\u5bf9\u4fe1\u9053\u8fdb\u884c\u8bbf\u95ee\uff0c\u800c\u4e0d\u662f\u4e00\u4e2a\u4e2a\u72ec\u7acb\u6765\u7ade\u4e89\u8bf7\u6c42\u7684\u8bdd\uff0c\u4fe1\u9053\u4f7f\u7528\u7387\u8fd8\u4f1a\u63d0\u9ad8\u3002<\/span><\/p>\n


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

\u5982\u4e0b\u56fe\u6240\u793a\uff0cAP\u901a\u8fc7\u53d1\u9001\u4e00\u4e2a\u89e6\u53d1\u4fe1\u53f7\uff0c\u6765\u540c\u6b65\u9700\u8981\u63a5\u5165\u76844\u4f4d\u7528\u6237\u7684\u5f00\u59cb\u53d1\u9001\u548c\u7ed3\u675f\u65f6\u95f4\u3002\u56db\u4f4d\u7528\u6237\u4e0d\u518d\u76f8\u4e92\u7ade\u4e89\u4fe1\u9053\u8d44\u6e90\uff0c\u800c\u662f\u91c7\u7528MU-MIMO\u6216\u8005OFDMA\u7684\u65b9\u5f0f\uff0c\u4e0eAP\u8fdb\u884c\u901a\u4fe1\u3002<\/span><\/p>\n

<\/p>\n

<\/p>\n

\u56fe 7 Wi-Fi 6\u7684\u591a\u8def\u6536\u53d1\u534f\u8c03\u529f\u80fd<\/span><\/p>\n

<\/p>\n

\u2588 <\/strong><\/span><\/strong>\u7ed3\u8bed<\/strong><\/span><\/section>\n


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

Wi-Fi 6\uff0c\u662fWi-Fi\u5386\u53f2\u4e0a\u6700\u91cd\u8981\u7684\u4e00\u6b21\u66f4\u65b0\u3002<\/span><\/p>\n


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

\u5373\u4f7f\u662f\u76ee\u524d\u6700\u65b0\u7684Wi-Fi 7\uff0c\u4e5f\u4ec5\u4ec5\u662f\u5bf9Wi-Fi 6\u7684\u4e3b\u8981\u7279\u6027\u8fdb\u884c\u4e00\u4e9b\u52a0\u5f3a\u3002<\/span><\/p>\n


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

Wi-Fi 6\u7684\u66f4\u65b0\u8fd8\u6709\u5f88\u591a\uff0c\u6bd4\u59821024QAM\u8c03\u5236\uff0c\u76ee\u6807\u8bbe\u5907\u5524\u9192\u65f6\u95f4\uff08Target  Wake Time\uff09\u7b49\u7b49\uff0c\u4eca\u5929\u6211\u4eec\u53ea\u4ecb\u7ecd\u4e86\u8ddf\u7f51\u7edc\u5bb9\u91cf\u76f8\u5173\u7684\u7279\u6027\u3002<\/span><\/p>\n


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

\u7f51\u7edc\u5bb9\u91cf\u4e0a\u7684\u63d0\u5347\uff0c\u662f\u6211\u8ba4\u4e3aWi-Fi 6\u4f17\u591a\u66f4\u65b0\u4e2d\u6700\u6709\u7528\u7684\u529f\u80fd\uff0c\u540c\u65f6\u4e5f\u662f\u4f01\u4e1a\u548c\u4e2a\u4eba\u7528\u6237\u5347\u7ea7Wi-Fi\u7f51\u7edc\u548c\u7ec8\u7aef\u7684\u91cd\u8981\u539f\u56e0\u3002<\/span><\/p>\n

<\/p>\n

\u4e3a\u4e86\u63d0<\/span>\u9ad8\u7cfb\u7edf<\/span>\u5bb9\u91cf<\/span>\uff0c<\/span>Wi-Fi\u5de5\u7a0b\u5e08\u4eec\u60f3\u5c3d\u4e86\u4e00\u5207\u7269\u7406\u5c42\u548cMAC\u5c42\u7684\u65b9\u6cd5\u3002\u4f46\u662f\uff0c\u6700\u7ec8\u5bb9\u91cf\u8fd8\u662f\u53d7\u9650\u4e8e\u9999\u519c\u6781\u9650\u3002<\/span><\/p>\n


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

\u8981\u8fdb\u4e00\u6b65\u4ece\u6839\u672c\u4e0a\u589e\u52a0\u7f51\u7edc\u5bb9\u91cf\uff0c\u53ea\u80fd\u4ece\u589e\u52a0\u9891\u8c31\u7684\u89d2\u5ea6\u6765\u89e3\u51b3\u3002<\/span><\/strong>\u5c24\u5176\u662f\u73b0\u6709\u76842.4GHz\uff0c\u7531\u4e8e\u5927\u91cf\u84dd\u7259\u3001\u9065\u63a7\u5668\u7b49\u65e0\u7ebf\u8bbe\u5907\u7684\u4f7f\u7528\uff0c\u5df2\u7ecf\u53d8\u5f97\u62e5\u6324\u4e0d\u582a\u3002\u800c5GHz\uff0c\u53c8\u5b58\u5728\u8bf8\u591a\u8bbf\u95ee\u9650\u5236\u3002<\/span><\/p>\n


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

\u9891\u8c31\u8d44\u6e90\u5bf9\u4e8eWi-Fi\u7cfb\u7edf\u6765\u8bf4\uff0c\u53d8\u5f97\u975e\u5e38\u6709\u9650\u3002\u8fd9\u5c31\u4fc3\u8fdb\u4e86Wi-Fi 6E<\/strong>\u7684\u8bde\u751f\u3002<\/span><\/p>\n


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

Wi-Fi 6E\uff0c\u662f\u5c06\u73b0\u6709\u7684Wi-Fi 6\u62d3\u5c55\u52306GHz\uff085925-7125 MHz\uff09\u4e0a\uff0c\u4e00\u4e0b\u5b50\u5c06\u9891\u8c31\u7684\u5bb9\u91cf\u589e\u52a0\u4e86\u4e09\u500d\u3002\u540c\u65f6\uff0c6GHz\u4e5f\u662f802.11\u7ec4\u7ec7\u4e3aWi-Fi 7\uff08IEEE802.11 be\uff09\u505a\u7684\u524d\u671f\u94fa\u57ab\u3002<\/span><\/p>\n


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

\u90a3\u4e48\uff0cWi-Fi 6E\u548cWi-Fi 7\u5177\u4f53<\/span>\u5982\u4f55\u63d0\u5347\u6027\u80fd\u5462\uff1f\u6211\u4f1a\u5728\u4e0b\u4e00\u671f\u6587\u7ae0\u7ed9\u5927\u5bb6\u4e00\u4e00\u9053\u6765\u3002<\/span><\/p>\n


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

<\/p>\n

\uff08\u5168\u6587\u5b8c\uff09<\/span><\/p>\n

<\/p>\n

\u672c\u6587\u4f5c\u8005\u5510\u6b23\u535a\u58eb\uff0c\u76ee\u524d\u62c5\u4efbSpectrum Lab\u6280\u672f\u603b\u76d1\u3002<\/span><\/p>\n

<\/p>\n

\u53c2\u8003\u6587\u732e<\/span><\/strong><\/span><\/p>\n

[1] Aruba Networks White Paper \u2013 802.11ax.<\/span><\/p>\n

[2] Cisco White Paper- IEEE 802.11ax: The Sixth Generation of Wi-Fi.<\/span><\/p>\n

[3] National Instrum<\/span>ents – Introduction to 802.11ax High-Efficiency Wireless<\/span><\/p>\n

<\/p>\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728\u4e0a\u4e00\u671f\u7684\u6587\u7ae0\uff08\u94fe\u63a5\uff09\u4e2d\uff0c\u6211\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u4e86Wi-Fi\u7684\u4fe1\u9053\u7ade\u4e89\u63a5\u5165\u539f\u7406\u3002Wi-Fi\u8bbe\u5907\u7684\u63a5\u5165\uff0c\u6838\u5fc3\u5c31\u5728\u4e8e\u8f7d\u6ce2\u4fa6\u542c […]<\/p>\n","protected":false},"author":1,"featured_media":1238,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[316],"class_list":["post-1239","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-54","tag-wifi"],"_links":{"self":[{"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/posts\/1239"}],"collection":[{"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1239"}],"version-history":[{"count":1,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/posts\/1239\/revisions"}],"predecessor-version":[{"id":1242,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/posts\/1239\/revisions\/1242"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/media\/1238"}],"wp:attachment":[{"href":"http:\/\/www.xzclass.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1239"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}