{"id":407,"date":"2025-12-15T10:15:22","date_gmt":"2025-12-15T02:15:22","guid":{"rendered":"https:\/\/www.garfield-blog.top\/?p=407"},"modified":"2025-12-21T20:46:10","modified_gmt":"2025-12-21T12:46:10","slug":"%e3%80%90%e8%af%bb%e4%b9%a6%e7%ac%94%e8%ae%b0%e3%80%91%e3%80%90%e6%97%a0%e7%ba%bf%e6%9d%83%e5%a8%81%e6%8c%87%e5%8d%97%e7%ac%ac%e4%ba%94%e7%89%88%e3%80%91802-11%e5%b8%a7%e7%bb%93%e6%9e%84","status":"publish","type":"post","link":"https:\/\/www.garfield-blog.top\/?p=407","title":{"rendered":"\u3010\u8bfb\u4e66\u7b14\u8bb0\u3011\u3010\u65e0\u7ebf\u6743\u5a01\u6307\u5357\u7b2c\u4e94\u7248\u3011802.11\u5e27\u7ed3\u6784"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u6570\u636e\u94fe\u8def\u5c42\u5206\u5c42<\/h2>\n\n\n\n<p>\u6570\u636e\u94fe\u8def\u5c42\u5206\u4e3a\u4e24\u4e2a\u5b50\u5c42\uff0c\u4e0a\u5c42\u662f<code>802.2<\/code>\u903b\u8f91\u94fe\u8def\u63a7\u5236(<code>LLC<\/code>)\u5b50\u5c42\uff0c\u4e0b\u5c42\u662f\u4ecb\u8d28\u8bbf\u95ee\u63a7\u5236(<code>MAC<\/code>)\u5b50\u5c42\u3002\u6240\u6709<code>802<\/code>\u7f51\u7edc\u5177\u6709\u76f8\u540c\u7684<code>LLC<\/code>\u5b50\u5c42\u7ed3\u6784\uff0c\u4f46\u5e76\u975e\u6240\u6709<code>802<\/code>\u7f51\u7edc\u90fd\u4f7f\u7528<code>LLC<\/code>\u5b50\u5c42\uff0c<code>802.11<\/code>\u6807\u51c6\u5b9a\u4e49\u7684\u65e0\u7ebf\u5c40\u57df\u7f51\u901a\u4fe1\u4f4d\u4e8e<code>MAC<\/code>\u5b50\u5c42<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">MAC\u670d\u52a1\u6570\u636e\u5355\u5143<\/h3>\n\n\n\n<p>\u7f51\u7edc\u5c42(\u7b2c\u4e09\u5c42)\u5c06\u6570\u636e\u53d1\u9001\u7ed9\u6570\u636e\u94fe\u8def\u5c42(\u7b2c\u4e8c\u5c42)\uff0c\u6570\u636e\u5728\u4f20\u9012\u7ed9<code>LLC<\/code>\u5b50\u5c42\u540e\u6210\u4e3a<code>MAC<\/code>\u670d\u52a1\u6570\u636e\u5355\u5143(<code>MSDU<\/code>)\u3002<code>MSDU<\/code>\u7531<code>LLC<\/code>\u5b50\u5c42\u5df2\u7ecf\u7b2c\u4e09\u5230\u7b2c\u4e03\u5c42\u4fe1\u606f\u6784\u6210\uff0c\u53ef\u4ee5\u7b80\u5355\u5b9a\u4e49\u4e3a\u5305\u542b<code>IP<\/code>\u5305\u4e0e\u90e8\u5206<code>LLC<\/code>\u6570\u636e\u7684\u6570\u636e\u51c0\u8377\u3002\u672c\u7ae0\u5c06\u8ba8\u8bba<code>3<\/code>\u79cd\u4e3b\u8981\u7684<code>802.11<\/code>\u5e27\u7c7b\u578b\u3002<code>802.11<\/code>\u7ba1\u7406\u5e27\u548c\u63a7\u5236\u5e27\u4e0d\u643a\u5e26\u4e0a\u5c42\u4fe1\u606f\uff0c\u53ea\u6709<code>802.11<\/code>\u6570\u636e\u5e27\u4f53\u643a\u5e26<code>MSDU<\/code>\u51c0\u8377\u3002<code>IEEE 802.11-2016<\/code>\u6807\u51c6\u89c4\u5b9a\uff0c<code>MSDU<\/code>\u7684\u6700\u5927\u957f\u5ea6\u4e3a<code>2304<\/code>\u5b57\u8282\uff0c\u800c\u5e27\u63d0\u7684\u6700\u5927\u957f\u5ea6\u7531<code>MSDU<\/code>\u7684\u6700\u5927\u957f\u5ea6(<code>2304<\/code>\u5b57\u8282)\u4ee5\u53ca\u52a0\u5bc6\u4ea7\u751f\u7684\u6700\u5927\u5f00\u9500\u51b3\u5b9a<\/p>\n\n\n\n<p><code>2009<\/code>\u5e74\u83b7\u6279\u7684<code>802.11n<\/code>\u4fee\u6b63\u6848\u5f15\u5165\u4e86\u805a\u5408<code>MAC<\/code>\u670d\u52a1\u6570\u636e\u5355\u5143(<code>A-MSDU<\/code>)\u7684\u6982\u5ff5\u3002\u4f7f\u7528<code>A-MSDU<\/code>\u65f6\uff0c\u5e27\u4f53\u7684\u6700\u5927\u957f\u5ea6\u7531<code>A-MSDU<\/code>\u7684\u6700\u5927\u957f\u5ea6\u5df2\u7ecf\u52a0\u5bc6\u4ea7\u751f\u7684\u5f00\u9500\u51b3\u5b9a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">MAC\u534f\u8bae\u6570\u636e\u5355\u5143<\/h3>\n\n\n\n<p><code>LLC<\/code>\u5b50\u5c42\u5411<code>MAC<\/code>\u5b50\u5c42\u53d1\u9001<code>MSDU<\/code>\u65f6\uff0c\u5c06\u6dfb\u52a0<code>MAC<\/code>\u5e27\u5934\u4fe1\u606f\u4ee5\u4fbf\u8bc6\u522b\u3002\u5c01\u88c5\u540e\u7684<code>MSDU<\/code>\u79f0\u4e3a<code>MAC<\/code>\u534f\u8bae\u6570\u636e\u5355\u5143(<code>MPDU<\/code>)\uff0c\u5b83\u5176\u5b9e\u5c31\u662f<code>802.11<\/code>\u5e27\u3002\u5982\u56fe\u6240\u793a\uff0c<code>802.11 MPDU<\/code>\u4e3b\u8981\u7531\u4ee5\u4e0b\u4e09\u90e8\u5206\u6784\u6210<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>MAC\u5e27\u5934<\/strong> \u5e27\u63a7\u5236\u3001\u6301\u7eed\u4e8b\u4ef6\u3001<code>MAC<\/code>\u5bfb\u5740\u3001\u5e8f\u5217\u63a7\u5236\u3001<code>QoS<\/code>\u63a7\u5236\u3001<code>HT<\/code>\u63a7\u5236\u7b49\u4fe1\u606f\u5747\u4f4d\u4e8e<code>MAC<\/code>\u5e27\u5934<\/li>\n\n\n\n<li><strong>\u5e27\u4f53<\/strong> \u5e27\u4f53\u7684\u5927\u5c0f\u6709\u6240\u4e0d\u540c\uff0c\u5305\u542b\u7684\u4fe1\u606f\u4e5f\u4f1a\u56e0\u4e3a\u5e27\u7c7b\u578b\u53ca\u5176\u5b50\u7c7b\u578b\u7684\u4e0d\u540c\u800c\u4e0d\u540c\u3002<code>MSDU<\/code>\u51c0\u8377(\u7b2c\u4e09\u5230\u7b2c\u4e03\u5c42\u4fe1\u606f)\u5c01\u88c5\u5728\u5e27\u4f53\u4e2d\uff0c\u53ef\u4ee5\u8fdb\u884c\u52a0\u5bc6\u4ee5\u4fdd\u62a4\u5176\u5b89\u5168<\/li>\n\n\n\n<li><strong>\u5e27\u6821\u9a8c\u5e8f\u5217<\/strong> \u5e27\u6821\u9a8c\u5e8f\u5217(<code>FCS<\/code>)\u5305\u62ec<code>32<\/code>\u4f4d\u5faa\u73af\u5197\u4f59\u6821\u9a8c(<code>CRC<\/code>)\uff0c\u7528\u4e8e\u9a8c\u8bc1\u63a5\u6536\u5e27\u7684\u5b8c\u6574\u6027 <\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/802.11-MPDU.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"471\" height=\"333\" data-original=\"https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/802.11-MPDU.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-409\"  sizes=\"auto, (max-width: 471px) 100vw, 471px\" \/><\/div><\/figure>\n\n\n\n<p>\u5c06\u6570\u636e\u5c01\u88c5\u6210\u8fd9\u6837\u7684\u5e27\u4e4b\u540e\uff0c\u5c31\u53ef\u4ee5\u4f20\u9012\u7ed9\u7269\u7406\u5c42\uff0c\u7269\u7406\u5c42\u5c06\u4e3a\u5e27\u4f20\u8f93\u505a\u8fdb\u4e00\u6b65\u51c6\u5907<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7269\u7406\u5c42<\/h2>\n\n\n\n<p>\u548c\u6570\u636e\u94fe\u8def\u5c42\u76f8\u4f3c\uff0c\u7269\u7406\u5c42\u4e5f\u5206\u4e3a\u4e24\u4e2a\u5b50\u5c42\u3002\u4e0a\u5c42\u79f0\u4e3a\u7269\u7406\u4f1a\u805a\u8fc7\u7a0b(<code>PLCP<\/code>)\u5b50\u5c42\uff0c\u4e0b\u5c42\u79f0\u4e3a\u7269\u7406\u4ecb\u8d28\u76f8\u5173(<code>PMD<\/code>)\u5b50\u5c42\u3002<code>MAC<\/code>\u5b50\u5c42\u5411<code>PLCP<\/code>\u5b50\u5c42\u53d1\u9001\u5e27\u3002<code>PLCP<\/code>\u5b50\u5c42\u521b\u5efa<code>PLCP<\/code>\u534f\u8bae\u6570\u636e\u5355\u5143(<code>PPDU<\/code>)\u4ee5\u4fbf\u4f20\u8f93\uff0c<code>PMD<\/code>\u5b50\u5c42\u968f\u540e\u8c03\u8bd5\u6570\u636e\u5e76\u4ee5\u6bd4\u7279\u7684\u5f62\u5f0f\u53d1\u9001\u51fa\u53bb<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PLCP\u670d\u52a1\u6570\u636e\u5355\u5143<\/h3>\n\n\n\n<p><code>PLCP<\/code>\u670d\u52a1\u6570\u636e\u5355\u5143(<code>PSDU<\/code>)\u662f\u7269\u7406\u5c42\u5bf9<code>MPDU<\/code>\u7684\u79f0\u8c13\uff0c\u6362\u8a00\u4e4b<code>MAC<\/code>\u5b50\u5c42\u5c06\u5e27\u79f0\u4e3a<code>MPDU<\/code>\uff0c\u800c\u7269\u7406\u5c42\u5c06\u540c\u6837\u7684\u5e27\u79f0\u4e3a<code>PSDU<\/code>\uff0c\u552f\u4e00\u7684\u533a\u522b\u5728\u4e8e\u4ece<code>OSI<\/code>\u6a21\u578b\u7684\u54ea\u4e00\u5c42\u6765\u89c2\u5bdf\u5e27<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">PLCP\u534f\u8bae\u6570\u636e\u5355\u5143<\/h3>\n\n\n\n<p>\u6536\u5230<code>PSDU<\/code>\u540e\uff0c<code>PLCP<\/code>\u5b50\u5c42\u521b\u5efa<code>PLCP<\/code>\u534f\u8bae\u6570\u636e\u5355\u5143(<code>PPDU<\/code>)\u4ee5\u4fbf\u4f20\u8f93\u3002<code>PLCP<\/code>\u5b50\u5c42\u5411<code>PSDU<\/code>\u6dfb\u52a0\u524d\u540c\u6b65\u7801\u548c\u7269\u7406\u5c42\u5934\u90e8\uff0c\u53d1\u9001\u7aef\u548c\u63a5\u6536\u7aef<code>802.11<\/code>\u65e0\u7ebf\u63a5\u53e3\u5229\u7528\u524d\u540c\u6b65\u7801\u8fdb\u884c\u540c\u6b65<\/p>\n\n\n\n<p>\u4e0a\u5c42\u4fe1\u606f\u5728\u6570\u636e\u94fe\u8def\u5c42\u4e0e\u7269\u7406\u5c42\u4e4b\u95f4\u4f20\u9012\u5982\u56fe\u6240\u793a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/\u6570\u636e\u94fe\u8def\u5c42\u4e0e\u7269\u7406\u5c42.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"2209\" height=\"1562\" data-original=\"https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/\u6570\u636e\u94fe\u8def\u5c42\u4e0e\u7269\u7406\u5c42.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-411\"  sizes=\"auto, (max-width: 2209px) 100vw, 2209px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">802.11\u548c802.3\u4e92\u64cd\u4f5c\u6027<\/h2>\n\n\n\n<p>\u7531\u4e8e\u6709\u7ebf\u57fa\u7840\u8bbe\u65bd\u5c5e\u4e8e\u4e0d\u540c\u7684\u7269\u7406\u4ecb\u8d28\uff0c<code>802.11<\/code>\u6570\u636e\u5e27\u51c0\u8377\u5fc5\u987b\u8f6c\u6362\u4e3a<code>802.3<\/code>\u4ee5\u592a\u7f51\u5e27\uff0c\u901a\u5e38\u5728<code>802.11<\/code>\u4ecb\u8d28\u4e0e<code>802.3<\/code>\u4ecb\u8d28\u4e4b\u95f4\u4f20\u8f93\u5e27\u51c0\u8377\uff0c\u4e5f\u53ef\u4ee5\u5728<code>802.11<\/code>\u4ecb\u8d28\u4e0e\u5176\u4ed6\u4ecb\u8d28\u4e4b\u95f4\u4f20\u8f93<code>MSDU<\/code>\u3002\u6240\u6709<code>IEEE 802<\/code>\u5e27\u683c\u5f0f\u90fd\u5177\u6709\u76f8\u4f3c\u7684\u7279\u6027\uff0c<code>802.11<\/code>\u5e27\u683c\u5f0f\u4e5f\u4e0d\u4f8b\u5916\u3002\u7531\u4e8e\u8fd9\u79cd\u76f8\u4f3c\u6027\uff0c\u5e27\u4ece<code>802.11<\/code>\u65e0\u7ebf\u7f51\u7edc\u4f20\u8f93\u5230<code>802.3<\/code>\u6709\u7ebf\u7f51\u7edc\u65f6\u5f88\u5bb9\u6613\u8fdb\u884c\u8f6c\u6362\uff0c\u53cd\u4e4b\u4ea6\u7136\uff0c\u8fd9\u4e00\u6b65\u901a\u5e38\u662f\u5728\u7269\u7406\u5c42\u5b9e\u73b0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">802.11 MAC\u5e27\u5934<\/h2>\n\n\n\n<p>\u6240\u6709<code>802.11<\/code>\u5e27\u90fd\u5305\u542b\u643a\u5e26\u4e8c\u5c42\u4fe1\u606f\u7684<code>MAC<\/code>\u5e27\u5934\u3002\u4e8c\u5c42\u4fe1\u606f\u6ca1\u6709\u52a0\u5bc6\uff0c\u53ef\u4ee5\u901a\u8fc7\u534f\u8bae\u5206\u6790\u4eea\u67e5\u770b\u5176\u5185\u5bb9\u3002\u5982\u56fe\u6240\u793a\uff0c<code>802.11 MAC<\/code>\u5e27\u5934\u4e3b\u8981\u7531<code>9<\/code>\u4e2a\u4e3b\u8981\u5b57\u6bb5\u6784\u6210\uff0c\u5176\u4e2d<code>4<\/code>\u4e2a\u5b57\u6bb5\u7528\u4e8e\u5bfb\u5740\uff0c\u53e6\u5916<code>5<\/code>\u4e2a\u5b57\u6bb5\u4e3a\u5e27\u63a7\u5236\u3001\u6301\u7eed\u65f6\u95f4\/<code>ID<\/code>\u3001\u5e8f\u5217\u63a7\u5236\u3001<code>QoS<\/code>\u63a7\u5236\u4ee5\u53ca<code>HT<\/code>\u63a7\u5236\u5b57\u6bb5<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/802.11MAC\u5e27\u5934.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"831\" height=\"308\" data-original=\"https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/802.11MAC\u5e27\u5934.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-410\"  sizes=\"auto, (max-width: 831px) 100vw, 831px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e27\u63a7\u5236\u5b57\u6bb5<\/h2>\n\n\n\n<p>\u5982\u56fe\u6240\u793a\uff0c<code>MAC<\/code>\u5e27\u5934\u7684\u524d\u4e24\u4e2a\u5b57\u8282\u662f\u5e27\u63a7\u5236\u5b57\u6bb5\uff0c\u7531\u534f\u8bae\u7248\u672c\u3001\u7c7b\u578b\u3001\u5b50\u7c7b\u578b\u3001\u53d1\u5f80<code>DS<\/code>\u3001\u6765\u81ea<code>DS<\/code>\u3001\u66f4\u591a\u5206\u7247\u3001\u91cd\u8bd5\u3001\u7535\u6e90\u7ba1\u7406\u3001\u66f4\u591a\u6570\u636e\u3001\u53d7\u4fdd\u62a4\u5e27\u3001<code>+HTC<\/code>\/\u987a\u5e8f\u5171<code>11<\/code>\u4e2a\u5b57\u6bb5\u6784\u6210<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/\u5e27\u63a7\u5236\u5b57\u6bb5.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"643\" height=\"447\" data-original=\"https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/\u5e27\u63a7\u5236\u5b57\u6bb5.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-412\"  sizes=\"auto, (max-width: 643px) 100vw, 643px\" \/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u534f\u8bae\u7248\u672c\u5b57\u6bb5<\/h3>\n\n\n\n<p>\u6240\u6709<code>802.11MAC<\/code>\u5e27\u5934\u7684\u7b2c\u4e00\u4e2a\u5b50\u5b57\u6bb5\u90fd\u662f\u534f\u8bae\u7248\u672c\u5b50\u5b57\u6bb5\uff0c\u957f\u5ea6\u4e3a<code>2<\/code>\u6bd4\u7279\uff0c\u4ec5\u7528\u4e8e\u6807\u8bc6<code>802.11<\/code>\u6280\u672f\u7684\u534f\u8bae\u7248\u672c\u3002\u6240\u6709<code>802.11<\/code>\u5e27\u7684\u534f\u8bae\u7248\u672c\u5b50\u5b57\u6bb5\u5747\u8bbe\u7f6e\u4e3a<code>0<\/code>\uff0c\u5176\u4ed6\u503c\u4fdd\u7559\u4e0d\u7528<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7c7b\u578b&amp;\u5b50\u7c7b\u578b\u5b57\u6bb5<\/h3>\n\n\n\n<p><code>IEEE 802.11-2016<\/code>\u6807\u51c6\u5b9a\u4e49\u4e86<code>3<\/code>\u79cd\u4e3b\u8981\u7684\u5e27\u7c7b\u578b\uff0c\u5b83\u4eec\u662f\u7ba1\u7406\u5e27\u3001\u63a7\u5236\u5e27\u3001\u6570\u636e\u5e27\u548c\u6269\u5c55\u5e27\u3002\u8fd9\u4e9b<code>802.11<\/code>\u5e27\u7c7b\u578b\u53ef\u8fdb\u4e00\u6b65\u7ec6\u5206\u4e3a\u591a\u79cd\u5b50\u7c7b\u578b\u3002<code>802.11MAC<\/code>\u5e27\u5934\u7684\u7c7b\u578b\u5b50\u5b57\u6bb5\u7528\u4e8e\u6807\u8bc6\u5e27\u5c5e\u4e8e\u7ba1\u7406\u5e27\u3001\u63a7\u5236\u5e27\u3001\u6570\u636e\u5e27\u8fd8\u662f\u6269\u5c55\u5e27\u3002<\/p>\n\n\n\n<p>\u7c7b\u578b(<code>Type<\/code>)\u548c\u5b50\u7c7b\u578b(<code>Subtype<\/code>)\u5b50\u5b57\u6bb5\u5171\u540c\u6807\u8bc6\u5e27\u7684\u529f\u80fd\u3002\u7531\u4e8e\u5b58\u5728\u591a\u79cd\u4e0d\u540c\u7c7b\u522b\u7684\u7ba1\u7406\u5e27\u3001\u63a7\u5236\u5e27\u4e0e\u6570\u636e\u5e27\uff0c\u56e0\u6b64\u5b50\u7c7b\u578b\u5b50\u5b57\u6bb5\u7684\u957f\u5ea6\u4e3a<code>4<\/code>\u6bd4\u7279<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7c7b\u578b\u5b57\u6bb5<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6bd4\u7279\u503c<\/th><th>\u5e27\u7c7b\u578b<\/th><th>\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td><code>00<\/code><\/td><td>\u7ba1\u7406\u5e27<\/td><td>\u53d1\u73b0\u63a5\u5165\u70b9\u5e76\u52a0\u5165\u57fa\u672c\u670d\u52a1\u96c6<\/td><\/tr><tr><td><code>01<\/code><\/td><td>\u63a7\u5236\u5e27<\/td><td>\u786e\u8ba4\u4f20\u8f93\u6210\u529f\u5e76\u4fdd\u7559\u65e0\u7ebf\u4ecb\u8d28<\/td><\/tr><tr><td><code>10<\/code><\/td><td>\u6570\u636e\u5e27<\/td><td>\u643a\u5e26\u4e0a\u5c42<code>MSDU<\/code>\u51c0\u8377<\/td><\/tr><tr><td><code>11<\/code><\/td><td>\u6269\u5c55\u5e27<\/td><td>\u4e00\u79cd\u65b0\u7684\u3001\u7075\u6d3b\u7684\u5e27\u683c\u5f0f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u7ba1\u7406\u5e27\u5b50\u7c7b\u578b<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6bd4\u7279\u503c<\/th><th>\u5e27\u7c7b\u578b<\/th><th>\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td><code>0000<\/code><\/td><td><strong>\u5173\u8054\u8bf7\u6c42<\/strong>(<code>Association Request<\/code>)<\/td><td><code>STA<\/code>\u5411<code>AP<\/code>\u8bf7\u6c42\u52a0\u5165<code>BSS<\/code><\/td><\/tr><tr><td><code>0001<\/code><\/td><td><strong>\u5173\u8054\u54cd\u5e94<\/strong>(<code>Association Response<\/code>)<\/td><td><code>AP<\/code>\u56de\u5e94<code>STA<\/code>\u7684\u5173\u8054\u8bf7\u6c42(\u6210\u529f\/\u5931\u8d25 +<code>AID<\/code>)<\/td><\/tr><tr><td><code>0010<\/code><\/td><td><strong>\u91cd\u5173\u8054\u8bf7\u6c42<\/strong>(<code>Reassociation Request<\/code>)<\/td><td><code>STA<\/code>\u5728\u6f2b\u6e38\u65f6\u4ece\u4e00\u4e2a<code>AP<\/code>\u5207\u6362\u5230\u53e6\u4e00\u4e2a<code>AP<\/code>\u65f6\u53d1\u9001\uff0c\u4fdd\u7559\u539f\u5173\u8054\u4e0a\u4e0b\u6587(\u5982<code>IP<\/code>\u5730\u5740)<\/td><\/tr><tr><td><code>0011<\/code><\/td><td><strong>\u91cd\u5173\u8054\u54cd\u5e94<\/strong>(<code>Reassociation Response<\/code>)<\/td><td>\u76ee\u6807<code>AP<\/code>\u5bf9\u91cd\u5173\u8054\u8bf7\u6c42\u7684\u56de\u5e94<\/td><\/tr><tr><td><code>0100<\/code><\/td><td><strong>\u63a2\u6d4b\u8bf7\u6c42<\/strong>(<code>Probe Request<\/code>)<\/td><td><code>STA<\/code>\u4e3b\u52a8\u626b\u63cf\u65f6\u5e7f\u64ad\uff0c\u7528\u4e8e\u53d1\u73b0\u9644\u8fd1<code>AP<\/code><\/td><\/tr><tr><td><code>0101<\/code><\/td><td><strong>\u63a2\u6d4b\u54cd\u5e94<\/strong>(<code>Probe Response<\/code>)<\/td><td><code>AP<\/code>\u6536\u5230<code>Probe Request<\/code>\u540e\u56de\u590d\u81ea\u8eab\u4fe1\u606f(SSID\u3001\u901f\u7387\u3001\u80fd\u529b\u7b49)<\/td><\/tr><tr><td><code>0110<\/code><\/td><td><strong>\u65f6\u95f4\u901a\u544a\u5e27<\/strong>(<code>Timing Advertisement<\/code>)<\/td><td>\u7528\u4e8e\u65f6\u95f4\u540c\u6b65(\u5982\u5728<code>TV<\/code>\u767d\u9891\u6bb5\u6216\u7279\u5b9a\u5de5\u4e1a\u5e94\u7528\u4e2d)\uff0c\u8f83\u5c11\u89c1<\/td><\/tr><tr><td><code>0111<\/code><\/td><td><strong>\u4fdd\u7559<\/strong>(<code>Reserved<\/code>)<\/td><td>\u672a\u4f7f\u7528<\/td><\/tr><tr><td><code>1000<\/code><\/td><td><strong>\u4fe1\u6807\u5e27<\/strong>(<code>Beacon<\/code>)<\/td><td><code>AP<\/code>\u5b9a\u671f\u5e7f\u64ad\uff0c\u5ba3\u544a\u7f51\u7edc\u5b58\u5728\uff0c\u5305\u542b<code>SSID<\/code>\u3001<code>TIM<\/code>(\u7701\u7535\u8c03\u5ea6)\u3001\u80fd\u529b\u7b49<\/td><\/tr><tr><td><code>1001<\/code><\/td><td><strong>\u901a\u77e5\u4f20\u8f93\u6307\u793a\u6d88\u606f<\/strong>(<code>ATIM<\/code>)<\/td><td>\u4ec5\u7528\u4e8e<code>IBSS<\/code>(<code>Ad-hoc<\/code>\u6a21\u5f0f)\uff0c\u901a\u77e5\u4f11\u7720\u8282\u70b9\u6709\u7f13\u5b58\u6570\u636e<\/td><\/tr><tr><td><code>1010<\/code><\/td><td><strong>\u89e3\u9664\u5173\u8054<\/strong>(<code>Disassociation<\/code>)<\/td><td>\u901a\u77e5\u5bf9\u65b9\u7ec8\u6b62\u903b\u8f91\u8fde\u63a5(\u4f46\u8ba4\u8bc1\u4ecd\u6709\u6548)\u3002\u53ef\u7531<code>STA<\/code>\u6216<code>AP<\/code>\u53d1\u8d77<\/td><\/tr><tr><td><code>1011<\/code><\/td><td><strong>\u8ba4\u8bc1\u5e27<\/strong>(<code>Authentication<\/code>)<\/td><td>\u7528\u4e8e\u5f00\u653e\u7cfb\u7edf\u8ba4\u8bc1\u6216\u5171\u4eab\u5bc6\u94a5\u8ba4\u8bc1(<code>WEP<\/code>\u65f6\u4ee3)\uff0c\u73b0\u4ee3<code>WPA\/WPA2<\/code>\u4f7f\u7528<code>802.1X\/EAP<\/code>\uff0c\u4f46\u6b64\u5e27\u4ecd\u5b58\u5728<\/td><\/tr><tr><td><code>1100<\/code><\/td><td><strong>\u89e3\u9664\u8ba4\u8bc1\u5e27<\/strong>(<code>Deauthentication<\/code>)<\/td><td>\u7ec8\u6b62\u8ba4\u8bc1\u72b6\u6001(\u6bd4<code>Disassociation<\/code>\u66f4\u5f7b\u5e95)\uff0c\u5e38\u7528\u4e8e\u8e22\u51fa\u5ba2\u6237\u7aef\u6216\u5b89\u5168\u65ad\u5f00<\/td><\/tr><tr><td><code>1101<\/code><\/td><td><strong>\u52a8\u4f5c\u5e27<\/strong>(<code>Action<\/code>)<\/td><td>\u7528\u4e8e\u9ad8\u7ea7\u529f\u80fd\u4ea4\u4e92\uff0c\u5982<code>QoS<\/code>(<code>ADDTS<\/code>)\u3001\u6ce2\u675f\u6210\u5f62\u3001\u65e0\u7ebf\u591a\u8df3(<code>Mesh<\/code>)\u3001<code>TDLS<\/code>\u3001<code>WNM<\/code>\u7b49<\/td><\/tr><tr><td><code>1110<\/code><\/td><td><strong>\u65e0\u786e\u8ba4\u52a8\u4f5c\u5e27<\/strong>(<code>Action No Ack<\/code>)<\/td><td>\u4e0e<code>Action<\/code>\u7c7b\u4f3c\uff0c\u4f46\u4e0d\u8981\u6c42\u63a5\u6536\u65b9<code>ACK<\/code>(\u7528\u4e8e\u5e7f\u64ad\u6216\u591a\u64ad\u573a\u666f)<\/td><\/tr><tr><td><code>1111<\/code><\/td><td><strong>\u4fdd\u7559<\/strong>(<code>Reserved<\/code>)<\/td><td>\u672a\u4f7f\u7528<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u63a7\u5236\u5e27\u5b50\u7c7b\u578b<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6bd4\u7279\u503c<\/th><th>\u5e27\u7c7b\u578b<\/th><th>\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td><code>0000-0011<\/code><\/td><td><strong>\u4fdd\u7559<\/strong>(<code>Reserved<\/code>)<\/td><td>\u672a\u4f7f\u7528<\/td><\/tr><tr><td><code>0100<\/code><\/td><td><strong>\u6ce2\u675f\u6210\u5f62\u62a5\u544a\u8f6e\u8be2<\/strong>(<code>Beamforming Report Poll<\/code>)<\/td><td>\u5728 8<code>02.11ac\/ax<\/code>\u4e2d\uff0c<code>AP<\/code>\u7528\u6b64\u5e27\u8bf7\u6c42\u5ba2\u6237\u7aef\u53d1\u9001\u5176\u6ce2\u675f\u6210\u5f62\u53cd\u9988(<code>CSI<\/code>)<\/td><\/tr><tr><td><code>0101<\/code><\/td><td><strong>VHT NDP\u516c\u544a<\/strong>(<code>VHT NDP Announcement<\/code>)<\/td><td>\u7528\u4e8e\u9ad8\u541e\u5410\u91cf(<code>VHT, 802.11ac<\/code>)\u6ce2\u675f\u6210\u5f62\u8bad\u7ec3\uff0c\u901a\u77e5\u5373\u5c06\u53d1\u9001<code>NDP<\/code>(<code>Null Data Packet<\/code>)\u4ee5\u4f9b\u4fe1\u9053\u63a2\u6d4b<\/td><\/tr><tr><td><code>0110<\/code><\/td><td><strong>\u63a7\u5236\u5e27\u6269\u5c55<\/strong>(<code>Control Frame Extension<\/code>)<\/td><td><code>802.11ax<\/code>\u5f15\u5165\uff0c\u7528\u4e8e\u643a\u5e26\u989d\u5916\u63a7\u5236\u4fe1\u606f(\u5982 HE-SIG \u5b57\u6bb5\u6269\u5c55)\uff0c\u652f\u6301<code>OFDMA \u548c MU-MIMO<\/code>\u8c03\u5ea6<\/td><\/tr><tr><td><code>0111<\/code><\/td><td><strong>\u63a7\u5236\u5c01\u88c5\u5e27<\/strong>(<code>Control Wrapper<\/code>)<\/td><td>\u7528\u4e8e\u5c01\u88c5\u5176\u4ed6\u63a7\u5236\u4fe1\u606f(\u5982\u5728<code>802.11n\/ac<\/code>\u4e2d\u5c01\u88c5\u591a\u4e2a<code>BlockAckReq<\/code>\u7b49)\uff0c\u8f83\u5c11\u89c1<\/td><\/tr><tr><td><code>1000<\/code><\/td><td><strong>\u5757\u786e\u8ba4\u8bf7\u6c42<\/strong>(<code>Block Ack Request<\/code>)<\/td><td>\u8bf7\u6c42\u63a5\u6536\u65b9\u5bf9\u4e00\u7ec4\u5df2\u63a5\u6536\u7684<code>MPDU<\/code>\u53d1\u9001<code>Block Ack<\/code>(\u6279\u91cf\u786e\u8ba4)\uff0c\u63d0\u9ad8\u6548\u7387<\/td><\/tr><tr><td><code>1001<\/code><\/td><td><strong>\u5757\u786e\u8ba4<\/strong>(<code>Block Ack<\/code>)<\/td><td>\u5bf9\u63a5\u6536\u5230\u7684\u4e00\u7ec4\u6570\u636e\u5e27\u8fdb\u884c\u6279\u91cf<code>ACK<\/code>\uff0c\u51cf\u5c11<code>ACK<\/code>\u5f00\u9500(\u5e38\u7528\u4e8e\u9ad8\u541e\u5410\u573a\u666f)<\/td><\/tr><tr><td><code>1010<\/code><\/td><td><strong>\u7701\u7535\u8f6e\u8be2<\/strong>(<code>PS-Po11<\/code>)<\/td><td>(<code>Power Save Poll<\/code>)\uff1a\u5904\u4e8e\u7701\u7535\u6a21\u5f0f\u7684 STA \u7528\u6b64\u5e27\u5411 AP \u8bf7\u6c42\u7f13\u5b58\u7684\u6570\u636e\u5e27<\/td><\/tr><tr><td><code>1011<\/code><\/td><td><strong>\u8bf7\u6c42\u53d1\u9001<\/strong>(<code>RTS<\/code>)<\/td><td>(<code>Request To Send<\/code>)\uff1a\u7528\u4e8e<code>CSMA\/CA<\/code>\u7684\u63e1\u624b\u673a\u5236\uff0c\u9884\u7559\u4fe1\u9053(\u914d\u5408<code>CTS<\/code>\u4f7f\u7528)<\/td><\/tr><tr><td><code>1100<\/code><\/td><td><strong>\u6e05\u9664\u53d1\u9001<\/strong>(<code>CTS<\/code>)<\/td><td>(<code>Clear To Send<\/code>)\uff1a\u54cd\u5e94<code>RTS<\/code>\uff0c\u544a\u77e5\u5176\u4ed6\u8bbe\u5907\u4fe1\u9053\u5df2\u88ab\u5360\u7528\uff0c\u540c\u65f6\u5141\u8bb8<code>RTS<\/code>\u53d1\u9001\u65b9\u5f00\u59cb\u4f20\u8f93<\/td><\/tr><tr><td><code>1101<\/code><\/td><td><strong>\u786e\u8ba4\u5e27<\/strong>(<code>Ack<\/code>)<\/td><td>\u5bf9\u5355\u4e2a\u6570\u636e\u5e27\u7684\u6210\u529f\u63a5\u6536\u8fdb\u884c\u786e\u8ba4(\u6700\u5e38\u7528\u7684\u63a7\u5236\u5e27\u4e4b\u4e00)<\/td><\/tr><tr><td><code>1110<\/code><\/td><td><strong>\u65e0\u7ade\u4e89\u7ed3\u675f<\/strong>(<code>CF-End<\/code>)<\/td><td>(<code>Contention Free End<\/code>)\uff1a\u5728\u65e7\u5f0f<code>PCF<\/code>(\u70b9\u534f\u8c03\u529f\u80fd)\u6a21\u5f0f\u4e0b\uff0c\u6807\u8bb0\u65e0\u7ade\u4e89\u5468\u671f\u7ed3\u675f<\/td><\/tr><tr><td><code>1111<\/code><\/td><td><strong>\u65e0\u7ade\u4e89\u7ed3\u675f + \u786e\u8ba4<\/strong>(<code>CF-End +CF-Ack<\/code>)<\/td><td>\u540c\u4e0a\uff0c\u4f46\u540c\u65f6\u786e\u8ba4\u524d\u4e00\u4e2a\u5e27(\u4ec5\u7528\u4e8e<code>PCF<\/code>\u6a21\u5f0f)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u6570\u636e\u5e27\u5b50\u7c7b\u578b<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6bd4\u7279\u503c<\/th><th>\u5e27\u7c7b\u578b<\/th><th>\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td><code>0000<\/code><\/td><td><strong>\u666e\u901a\u6570\u636e\u5e27<\/strong>(<code>Data(simple data frame)<\/code>)<\/td><td>\u643a\u5e26\u4e0a\u5c42\u534f\u8bae\u6570\u636e\uff08\u5982<code>IP<\/code>\u5305\uff09\uff0c\u4f7f\u7528<code>DCF<\/code>\uff08\u5206\u5e03\u5f0f\u534f\u8c03\uff09\u673a\u5236\u4f20\u8f93\uff0c\u65e0<code>QoS<\/code>\u652f\u6301\uff08\u9002\u7528\u4e8e<code>802.11a\/b\/g<\/code>\uff09<\/td><\/tr><tr><td><code>0001<\/code><\/td><td><strong>\u6570\u636e + \u65e0\u7ade\u4e89\u786e\u8ba4<\/strong>(<code>Data +CF-Ack<\/code>)<\/td><td>\u5728<code>PCF<\/code>\uff08\u70b9\u534f\u8c03\u529f\u80fd\uff09 \u6a21\u5f0f\u4e0b\uff0c\u65e2\u4f20\u8f93\u6570\u636e\uff0c\u53c8\u5bf9\u524d\u4e00\u4e2a\u5e27\u8fdb\u884c\u786e\u8ba4\uff08<code>CF-Ack<\/code>\uff09\u3002\u73b0\u4ee3<code>Wi-Fi<\/code>\u51e0\u4e4e\u4e0d\u7528<code>PCF<\/code><\/td><\/tr><tr><td><code>0010<\/code><\/td><td><strong>\u6570\u636e + \u65e0\u7ade\u4e89\u8f6e\u8be2<\/strong>(<code>Data +CF-Poll<\/code>)<\/td><td>\u5728<code>PCF<\/code>\u6a21\u5f0f\u4e0b\uff0c<code>AP<\/code>\u53d1\u9001\u6b64\u5e27\u8868\u793a\u201c\u6211\u6709\u6570\u636e\u53d1\u7ed9\u4f60\uff0c\u540c\u65f6\u8f6e\u8be2\u4f60\u662f\u5426\u6709\u6570\u636e\u8981\u53d1\u201d<\/td><\/tr><tr><td><code>0011<\/code><\/td><td><strong>\u6570\u636e + \u786e\u8ba4 + \u8f6e\u8be2<\/strong>(<code>Data +CF-Ack +CF-Poll<\/code>)<\/td><td>\u540c\u65f6\u5b8c\u6210\u4e09\u9879\u529f\u80fd\uff1a\u4f20\u6570\u636e\u3001\u786e\u8ba4\u524d\u5e27\u3001\u8f6e\u8be2<code>STA<\/code>\u3002\u4ec5\u7528\u4e8e\u5df2\u5e9f\u5f03\u7684<code>PCF<\/code>\u6a21\u5f0f<\/td><\/tr><tr><td><code>0100<\/code><\/td><td><strong>\u7a7a\u6570\u636e\u5e27\uff08\u65e0\u8d1f\u8f7d\uff09<\/strong>(<code>Null(no data)<\/code>)<\/td><td>\u4e0d\u643a\u5e26\u4efb\u4f55\u4e0a\u5c42\u6570\u636e\uff0c\u4f46\u7528\u4e8e\u7ef4\u6301\u5173\u8054\u72b6\u6001\uff08\u5982\u7701\u7535\u6a21\u5f0f\u4e0b\u544a\u77e5<code>AP<\/code>\u201c\u6211\u8fd8\u5728\u7ebf\u201d\uff09\uff0c\u6216\u89e6\u53d1\u54cd\u5e94\uff08\u5982\u6f2b\u6e38\u63a2\u6d4b\uff09<\/td><\/tr><tr><td><code>0101<\/code><\/td><td><strong>\u65e0\u7ade\u4e89\u786e\u8ba4\uff08\u65e0\u6570\u636e\uff09<\/strong>(<code>CF-Ack(no data)<\/code>)<\/td><td>\u4ec5\u7528\u4e8e<code>PCF<\/code>\u6a21\u5f0f\u4e0b\u7684\u786e\u8ba4\uff0c\u65e0\u6570\u636e\u8d1f\u8f7d<\/td><\/tr><tr><td><code>0110<\/code><\/td><td><strong>\u65e0\u7ade\u4e89\u8f6e\u8be2\uff08\u65e0\u6570\u636e\uff09<\/strong>(<code>CF-Poll(no data)<\/code>)<\/td><td><code>AP<\/code>\u5728<code>PCF<\/code>\u5468\u671f\u4e2d\u8f6e\u8be2<code>STA<\/code>\u662f\u5426\u6709\u6570\u636e\u8981\u53d1\u9001<\/td><\/tr><tr><td><code>0111<\/code><\/td><td><strong>\u786e\u8ba4 + \u8f6e\u8be2\uff08\u65e0\u6570\u636e\uff09<\/strong>(<code>CF-Ack +CF-Poll(no data)<\/code>)<\/td><td><code>PCF<\/code>\u6a21\u5f0f\u4e0b\u7ec4\u5408\u64cd\u4f5c\uff0c\u65e0\u6570\u636e<\/td><\/tr><tr><td><code>1000<\/code><\/td><td><strong>QoS \u6570\u636e\u5e27<\/strong>(<code>QoS Data<\/code>)<\/td><td>\u6700\u5e38\u7528\u7684\u6570\u636e\u5e27\u7c7b\u578b\uff08<code>802.11e<\/code>\u53ca\u4ee5\u540e\uff09\u3002\u643a\u5e26\u4e0a\u5c42\u6570\u636e\uff0c\u5e76\u5305\u542b<code>QoS<\/code>\u63a7\u5236\u5b57\u6bb5\uff08\u5982<code>TID<\/code>\u3001<code>EOSP<\/code>\u3001<code>ACK policy<\/code>\uff09\uff0c\u652f\u6301<code>WMM<\/code>\u3001\u8bed\u97f3\/\u89c6\u9891\u4f18\u5148\u7ea7\u3001<code>A-MPDU<\/code>\u805a\u5408\u7b49<\/td><\/tr><tr><td><code>1001<\/code><\/td><td><strong>QoS \u6570\u636e + \u786e\u8ba4<\/strong>(<code>QoS Data +CF-Ack<\/code>)<\/td><td>\u7406\u8bba\u4e0a\u5b58\u5728\uff0c\u4f46\u56e0<code>PCF<\/code>\u5df2\u5f03\u7528\uff0c\u5b9e\u9645\u51e0\u4e4e\u4e0d\u4f1a\u51fa\u73b0<\/td><\/tr><tr><td><code>1010<\/code><\/td><td><strong>QoS \u6570\u636e + \u8f6e\u8be2<\/strong>(<code>QoS Data +CF-Poll<\/code>)<\/td><td>\u540c\u4e0a\uff0c\u4ec5\u5728<code>PCF + QoS<\/code>\u6df7\u5408\u573a\u666f\uff08\u6781\u7f55\u89c1\uff09<\/td><\/tr><tr><td><code>1011<\/code><\/td><td><strong>QoS \u6570\u636e + \u786e\u8ba4 + \u8f6e\u8be2<\/strong>(<code>QoS Data +CF-Ack +CF-Poll<\/code>)<\/td><td>\u540c\u4e0a\uff0c\u57fa\u672c\u4e0d\u7528<\/td><\/tr><tr><td><code>1100<\/code><\/td><td><strong>QoS \u7a7a\u5e27<\/strong>(<code>QoS Null(no data)<\/code>)<\/td><td>\u4e0d\u643a\u5e26\u6570\u636e\uff0c\u4f46\u5305\u542b<code>QoS<\/code>\u4fe1\u606f\u3002\u5e38\u7528\u4e8e\uff1a<br>\u2022 \u5ba2\u6237\u7aef\u8fdb\u5165\/\u9000\u51fa\u7701\u7535\u6a21\u5f0f\uff08\u901a\u8fc7<code>EOSP<\/code>\u4f4d\uff09<br>\u2022 \u89e6\u53d1<code>AP<\/code>\u53d1\u9001\u7f13\u5b58\u5e27<br>\u2022 \u4fdd\u6301\u5173\u8054\u5e76\u58f0\u660e\u6d41\u91cf\u7c7b\u522b\uff08\u5982<code>VoIP<\/code>\u6d41\u4fdd\u6d3b\uff09<\/td><\/tr><tr><td><code>1101<\/code><\/td><td><strong>\u4fdd\u7559<\/strong>(<code>Reserved<\/code>)<\/td><td>\u672a\u4f7f\u7528<\/td><\/tr><tr><td><code>1110<\/code><\/td><td><strong>QoS \u8f6e\u8be2\uff08\u65e0\u6570\u636e\uff09<\/strong>(<code>QoS CF-Poll(no data)<\/code>)<\/td><td>\u7406\u8bba\u5b58\u5728\uff0c\u5b9e\u9645\u4e0d\u7528\uff08<code>PCF<\/code>\u5df2\u6dd8\u6c70\uff09<\/td><\/tr><tr><td><code>1111<\/code><\/td><td><strong>QoS \u786e\u8ba4+\u8f6e\u8be2\uff08\u65e0\u6570\u636e\uff09<\/strong>(<code>QoS CF-Ack +CF-Poll(no data)<\/code>)<\/td><td>\u540c\u4e0a\uff0c\u5e9f\u5f03<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u6269\u5c55\u5e27\u5b50\u7c7b\u578b<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6bd4\u7279\u503c<\/th><th>\u5e27\u7c7b\u578b<\/th><th>\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td><code>0000<\/code><\/td><td><strong>\u5b9a\u5411\u4fe1\u6807\u5e27<\/strong>(<code>DMG Beacon<\/code>)<\/td><td>\u7528\u4e8e<code>60 GHz<\/code>\u7f51\u7edc\u4e2d\u6247\u533a\u7ea7\u7684\u540c\u6b65\u548c\u53d1\u73b0<\/td><\/tr><tr><td><code>0001-1111<\/code><\/td><td><strong>\u4fdd\u7559<\/strong>(<code>Reserved<\/code>)<\/td><td>\u4fdd\u7559\u4f9b\u672a\u6765\u4f7f\u7528<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u91cd\u8bd5\u5b57\u6bb5<\/h3>\n\n\n\n<p>\u91cd\u8bd5(<code>Retry<\/code>)\u5b50\u5b57\u6bb5\u7684\u957f\u5ea6\u4e3a<code>1<\/code>\u6bd4\u7279\uff0c\u5b83\u6216\u8bb8\u662f<code>802.11 MAC<\/code>\u5e27\u5934\u4e2d\u6700\u91cd\u8981\u7684\u5b57\u6bb5\u4e4b\u4e00\u3002\u91cd\u8bd5\u5b50\u5b57\u6bb5\u7684\u503c\u4e3a<code>0<\/code>\u8868\u793a\u5e27\u4e3a\u9996\u6b21\u4f20\u8f93\uff1b\u5982\u679c\u53d1\u9001\u7aef\u65e0\u7ebf\u63a5\u53e3\u5c06\u7ba1\u7406\u5e27\u6216\u6570\u636e\u5e27\u7684\u91cd\u8bd5\u5b50\u5b57\u6bb5\u8bbe\u7f6e\u4e3a<code>1<\/code>,\u5219\u8868\u660e\u6b63\u5728\u53d1\u9001\u7684\u5e27\u5c5e\u4e8e\u91cd\u4f20<br>\u53d1\u9001\u7aef<code>802.11<\/code>\u65e0\u7ebf\u63a5\u53e3\u6bcf\u6b21\u4f20\u8f93\u5355\u64ad\u5e27\u65f6\uff0c\u5982\u679c\u63a5\u6536\u7aef<code>802.11<\/code>\u65e0\u7ebf\u63a5\u53e3\u6b63\u786e\u6536\u5230\u8be5\u5e27\u4e14\u5e27\u6821\u9a8c\u5e8f\u5217\u7684\u5faa\u73af\u5197\u4f59\u6821\u9a8c\u901a\u8fc7\uff0c\u5c06\u56de\u590d\u786e\u8ba4\u5e27\u3002\u5982\u679c\u53d1\u9001\u7aef<code>802.11<\/code>\u65e0\u7ebf\u63a5\u53e3\u6ca1\u6709\u6536\u5230\u786e\u8ba4\u5e27\uff0c\u5c31\u65e0\u6cd5\u5224\u65ad\u5355\u64ad\u5e27\u662f\u5426\u4f20\u8f93\u6210\u529f\uff0c\u56e0\u6b64\u5fc5\u987b\u91cd\u4f20\u8be5\u5e27\u3002\u901a\u8fc7\u91cd\u8bd5\u5b50\u5b57\u6bb5\u53ef\u4ee5\u5224\u65ad\u6b63\u5728\u4f20\u8f93\u7684\u5e27\u5c5e\u4e8e\u91cd\u4f20\u8fd8\u662f\u9996\u6b21\u53d1\u9001<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u53d7\u4fdd\u62a4\u5e27<\/h3>\n\n\n\n<p>\u53d7\u4fdd\u62a4\u5e27(<code>Protected Frame<\/code>)\u5b50\u5b57\u6bb5\u7684\u957f\u5ea6\u4e3a<code>1<\/code>\u6bd4\u7279\uff0c\u7528\u4e8e\u6807\u8bc6\u6570\u636e\u5e27\u7684<code>MSDU<\/code>\u51c0\u8377\u662f\u5426\u52a0\u5bc6\uff0c\u5b83\u662f\u5e27\u63a7\u5236\u5b57\u6bb5\u7684\u5b50\u5b57\u6bb5\u4e4b\u4e00\u3002\u5982\u679c\u6570\u636e\u5e27\u7684\u53d7\u4fdd\u62a4\u5e27\u5b50\u5b57\u6bb5\u8bbe\u7f6e\u4e3a<code>1<\/code>,\u5219\u8868\u793a<code>MSDU<\/code>\u51c0\u8377\u786e\u5b9e\u7ecf\u8fc7\u52a0\u5bc6\uff1b\u4f46\u8fd9\u4e2a\u5b50\u5b57\u6bb5\u65e0\u6cd5\u7ed9\u51fa\u4f7f\u7528\u7684\u52a0\u5bc6\u7c7b\u578b\uff0c\u5b83\u53ea\u8868\u793a\u5e27\u4f53\u7684<code>MSDU<\/code>\u51c0\u8377\u7ecf\u8fc7\u52a0\u5bc6\u3002\u53ef\u4f9b\u4f7f\u7528\u7684\u52a0\u5bc6\u7c7b\u578b\u5305\u62ec\u6709\u7ebf\u7b49\u6548\u52a0\u5bc6(<code>WEP<\/code>)\u3001\u4e34\u65f6\u5bc6\u94a5\u5b8c\u6574\u6027\u534f\u8bae(<code>TKIP<\/code>)\u4e0e\u8ba1\u6570\u5668\u6a21\u5f0f\u5bc6\u7801\u5757\u94fe\u6d88\u606f\u8ba4\u8bc1\u7801\u534f\u8bae(<code>CCMP<\/code>)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6301\u7eed\u65f6\u95f4\/ID\u5b57\u6bb5<\/h3>\n\n\n\n<p>\u6301\u7eed\u65f6\u95f4\/<code>ID<\/code>(<code>Duration\/ID<\/code>)\u5b57\u6bb5\uff1a\u4f20\u8f93\u7ec8\u7aef\u7684<code>MAC<\/code>\u5e27\u5934\u4e2d\u5305\u542b\u6301\u7eed\u65f6\u95f4\u503c\uff0c\u7528\u4e8e\u91cd\u7f6e\u5176\u4ed6\u76d1\u542c\u7ec8\u7aef\u7684<code>NAV<\/code>\u8ba1\u65f6\u5668<br>\u865a\u62df\u8f7d\u6ce2\u76d1\u542c\u4f7f\u7528\u79f0\u4e3a\u7f51\u7edc\u5206\u914d\u5411\u91cf(<code>NAV<\/code>)\u7684\u8ba1\u65f6\u5668\u673a\u5236\uff0c<code>NAV<\/code>\u8ba1\u65f6\u5668\u6839\u636e\u4ece\u524d\u4e00\u4e2a\u5e27\u4f20\u8f93\u4e2d\u89c2\u5bdf\u5230\u7684\u6301\u7eed\u65f6\u95f4\u503c\u6765\u9884\u6d4b\u4ecb\u8d28\u4eca\u540e\u7684\u6d41\u91cf\u3002\u6ca1\u6709\u4f20\u8f93\u6570\u636e\u7684<code>802.11<\/code>\u65e0\u7ebf\u63a5\u53e3\u5c06\u76d1\u542c\u4ecb\u8d28\u3002\u76d1\u542c\u7ec8\u7aef\u5728\u4fa6\u542c\u5230\u5176\u4ed6\u7ec8\u7aef\u7684\u5e27\u4f20\u8f93\u65f6\u5c06\u67e5\u770b\u5e27\u5934\uff0c\u5e76\u786e\u5b9a\u6301\u7eed\u65f6\u95f4\/<code>ID<\/code>\u5b57\u6bb5\u662f\u5426\u5305\u542b\u6301\u7eed\u65f6\u95f4\u503c\u6216<code>ID<\/code>\u503c\u3002\u5982\u679c\u5b57\u6bb5\u4e2d\u5305\u542b\u6301\u7eed\u65f6\u95f4\u503c\uff0c\u76d1\u542c\u7ec8\u7aef\u5c31\u5c06\u81ea\u5df1\u7684<code>NAV<\/code>\u8ba1\u65f6\u5668\u8bbe\u7f6e\u4e3a\u8be5\u503c\uff0c\u7136\u540e\u4f7f\u7528<code>NAV<\/code>\u4f5c\u4e3a\u5012\u6570\u8ba1\u65f6\u5668\u3002\u5728\u5012\u8ba1\u65f6\u51cf\u5c11\u5230<code>0<\/code>\u4e4b\u524d\uff0c\u7ec8\u7aef\u8ba4\u4e3a\u5c04\u9891\u4ecb\u8d28\u5904\u4e8e\u7e41\u5fd9\u72b6\u6001<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">MAC\u5bfb\u5740<\/h2>\n\n\n\n<p>\u4e0e<code>802.3<\/code>\u4ee5\u592a\u7f51\u5e27\u7c7b\u4f3c\uff0c<code>802.11<\/code>\u5e27\u5934\u540c\u6837\u5305\u62ec<code>MAC<\/code>\u5730\u5740\u3002<code>MAC<\/code>\u5730\u5740\u5206\u4e3a\u4ee5\u4e0b\u4e24\u79cd\u7c7b\u578b\uff1a<br><strong>\u5355\u5730\u5740<\/strong>\uff1a\u5206\u914d\u7ed9\u7f51\u7edc\u4e2d\u552f\u4e00\u7ec8\u7aef\u7684\u5730\u5740\uff0c\u53c8\u79f0\u5355\u64ad\u5730\u5740<br><strong>\u7ec4\u5730\u5740<\/strong>\uff1a\u4f9b\u7f51\u7edc\u4e2d\u4e00\u4e2a\u6216\u591a\u4e2a\u7ec8\u7aef\u4f7f\u7528\u7684\u591a\u76ee\u7684\u5730\u5740\uff0c\u5305\u62ec\u4ee5\u4e0b\u4e24\u7c7b<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u591a\u64ad\u7ec4\u5730\u5740\uff1a\u4e0a\u5c42\u5b9e\u4f53\u7528\u4e8e\u5b9a\u4e49\u7ec8\u7aef\u903b\u8f91\u7ec4\u7684\u5730\u5740<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a\u6807\u8bc6\u7f51\u7edc\u4e2d\u6240\u6709\u7ec8\u7aef\u7684\u7ec4\u5730\u5740\u3002\u5e7f\u64ad\u5730\u5740\u7684\u6240\u6709\u4f4d\u5747\u4e3a<code>1<\/code>,\u5b83\u5b9a\u4e49\u4e86\u5c40\u57df\u7f51\u4e2d\u7684\u6240\u6709\u7ec8\u7aef\u3002\u4ee5\u5341\u516d\u8fdb\u5236\u5f62\u5f0f\u8868\u793a\u7684\u5e7f\u64ad\u5730\u5740\u4e3a<code>FF:FF:FF:F:FF:FF<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u867d\u7136\u5b58\u5728\u76f8\u4f3c\u4e4b\u5904\uff0c\u4f46<code>802.11<\/code>\u5e27\u4f7f\u7528\u7684<code>MAC<\/code>\u5bfb\u5740\u65b9\u5f0f\u8fdc\u8f83\u4ee5\u592a\u7f51\u5e27\u590d\u6742\u3002<code>802.3 MAC<\/code>\u5e27\u5934\u4ec5\u6709\u6e90\u5730\u5740\u548c\u76ee\u7684\u5730\u5740\uff1b<code>802.11 MAC<\/code>\u5e27\u5934\u5171\u6709<code>4<\/code>\u4e2a\u5730\u5740\u5b57\u6bb5\u3002<code>802.11<\/code>\u5e27\u4e00\u822c\u4ec5\u4f7f\u7528<code>3<\/code>\u4e2a<code>MAC<\/code>\u5730\u5740\u5b57\u6bb5\uff0c\u4f46\u901a\u8fc7\u65e0\u7ebf\u5206\u5e03\u7cfb\u7edf(<code>WDS<\/code>)\u4f20\u8f93\u7684<code>802.11<\/code>\u5e27\u9700\u8981\u4f7f\u7528\u5168\u90e8<code>4<\/code>\u4e2aMAC\u5730\u5740\u3002\u67d0\u4e9b\u5e27\u53ef\u80fd\u4e0d\u5305\u62ec\u67d0\u4e9b\u5730\u5740\u5b57\u6bb5\u3002\u867d\u7136\u5730\u5740\u5b57\u6bb5\u7684\u6570\u91cf\u4e0d\u540c\uff0c\u4f46<code>802.3<\/code>\u5e27\u548c<code>802.11<\/code>\u5e27\u5747\u5305\u62ec\u6e90\u5730\u5740\u548c\u76ee\u7684\u5730\u5740\uff0c\u5e76\u4f7f\u7528\u76f8\u540c\u7684<code>MAC<\/code>\u5730\u5740\u683c\u5f0f\u3002\u524d<code>3<\/code>\u4e2a\u5b57\u8282\u79f0\u4e3a\u7ec4\u7ec7\u552f\u4e00\u6807\u8bc6\u7b26(<code>OUI<\/code>),\u540e<code>3<\/code>\u4e2a\u5b57\u8282\u79f0\u4e3a\u6269\u5c55\u6807\u8bc6\u7b26\u3002<br>\u4e0b\u56fe\u663e\u793a\u4e86<code>4<\/code>\u4e2a<code>802.11 MAC<\/code>\u5730\u5740\u5b57\u6bb5\uff0c\u5b83\u4eec\u662f\u5730\u5740<code>1<\/code>\u3001\u5730\u5740<code>2<\/code>\u3001\u5730\u5740<code>3<\/code>\u4ee5\u53ca\u5730\u5740<code>4<\/code>\u3002\u6839\u636e\u53d1\u5f80<code>DS<\/code>\u548c\u6765\u81ea<code>DS<\/code>\u5b50\u5b57\u6bb5\u7684\u503c\uff0c\u8fd9<code>4<\/code>\u4e2a<code>MAC<\/code>\u5730\u5740\u5b57\u6bb5\u7684\u5b9a\u4e49\u6216\u8bb8\u6709\u6240\u4e0d\u540c\u3002<code>5<\/code>\u79cd\u53ef\u80fd\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6e90\u5730\u5740<\/strong> \u539f\u53d1\u9001\u7aef\u7684<code>MAC<\/code>\u5730\u5740\u79f0\u4e3a\u6e90\u5730\u5740(<code>SA<\/code>)\u3002\u6e90\u5730\u5740\u53ef\u4ee5\u662f\u65e0\u7ebf\u7ec8\u7aef\uff0c\u4e5f\u53ef\u80fd\u4f4d\u4e8e\u6709\u7ebf\u7f51\u7edc<\/li>\n\n\n\n<li><strong>\u76ee\u7684\u5730\u5740<\/strong> \u4f5c\u4e3a\u4e8c\u5c42\u5e27\u7684\u6700\u7ec8\u76ee\u7684\u5730\u7684MAC\u5730\u5740\u79f0\u4e3a\u76ee\u7684\u5730\u5740(<code>DA<\/code>)\u3002\u6700\u7ec8\u76ee\u7684\u5730\u53ef\u4ee5\u662f\u65e0\u7ebf\u7ec8\u7aef\uff0c\u4e5f\u53ef\u80fd\u4f4d\u4e8e\u6709\u7ebf\u7f51\u7edc(\u5982\u670d\u52a1\u5668)<\/li>\n\n\n\n<li><strong>\u53d1\u5c04\u673a\u5730\u5740<\/strong> \u53d1\u9001\u7aef<code>802.11<\/code>\u65e0\u7ebf\u63a5\u53e3\u7684<code>MAC<\/code>\u5730\u5740\u79f0\u4e3a\u53d1\u5c04\u673a\u5730\u5740(<code>TA<\/code>)\u3002\u63a5\u6536\u673a\u5730\u5740 \u63a5\u6536\u7aef<code>802.11<\/code>\u65e0\u7ebf\u63a5\u53e3\u7684<code>MAC<\/code>\u5730\u5740\u79f0\u4e3a\u63a5\u6536\u673a\u5730\u5740(<code>RA<\/code>)<\/li>\n\n\n\n<li><strong>\u57fa\u672c\u670d\u52a1\u96c6\u6807\u8bc6\u7b26<\/strong> \u57fa\u672c\u670d\u52a1\u96c6(<code>BSS<\/code>)\u7684\u4e8c\u5c42\u6807\u8bc6\u7b26\u79f0\u4e3a\u57fa\u672c\u670d\u52a1\u96c6\u6807\u8bc6\u7b26(<code>BSSID<\/code>),\u5b83\u662f\u63a5\u5165\u70b9\u65e0\u7ebf\u63a5\u53e3\u7684<code>MAC<\/code>\u5730\u5740\u3002\u5982\u679c\u5b58\u5728\u591a\u4e2a\u57fa\u672c\u670d\u52a1\u96c6\uff0c\u5219<code>BSSID<\/code>\u5728\u63a5\u5165\u70b9\u65e0\u7ebf\u63a5\u53e3\u539f\u59cb<code>MAC<\/code>\u5730\u5740\u7684\u57fa\u7840\u4e0a\u9012\u589e<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/802.11-MAC\u5bfb\u5740.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"2037\" height=\"1615\" data-original=\"https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/802.11-MAC\u5bfb\u5740.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-408\"  sizes=\"auto, (max-width: 2037px) 100vw, 2037px\" \/><\/div><\/figure>\n\n\n\n<p>\u53d1\u5f80<code>DS<\/code>\u548c\u6765\u81ea<code>DS<\/code>\u5b50\u5b57\u6bb5\u7684\u957f\u5ea6\u5747\u4e3a<code>1<\/code>\u6bd4\u7279\uff0c\u53ef\u5171\u540c\u4f7f\u7528\u5b83\u4eec\u4ee5\u63a7\u5236<code>802.11<\/code>\u5e27\u5934\u4e2d<code>4<\/code>\u4e2a<code>MAC<\/code>\u5730\u5740\u7684\u542b\u4e49\u3002\u6b64\u5916\uff0c\u8fd9\u4e24\u4e2a\u5b50\u5b57\u6bb5\u8fd8\u80fd\u6807\u8bc6\u65e0\u7ebf\u5c40\u57df\u7f51\u4e0e\u5206\u5e03\u7cfb\u7edf(\u901a\u5e38\u4e3a\u6709\u7ebf\u4ee5\u592a\u7f51)\u4e4b\u95f4\u7684<code>802.11<\/code>\u6570\u636e\u5e27\u6d41<\/p>\n\n\n\n<p>\u5f53\u53d1\u5f80<code>DS<\/code>\u5b50\u5b57\u6bb5\u3001\u6765\u81ea<code>DS<\/code>\u5b50\u5b57\u6bb5\u4e0e<code>4<\/code>\u4e2a<code>MAC<\/code>\u5730\u5740\u4e00\u8d77\u4f7f\u7528\u65f6\uff0c\u4e24\u4e2a\u5b50\u5b57\u6bb5\u7684\u5b9a\u4e49\u5c06\u53d1\u751f\u53d8\u5316\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u5730\u5740<code>1<\/code>\u5b57\u6bb5\u59cb\u7ec8\u7528\u4f5c\u63a5\u6536\u673a\u5730\u5740(<code>RA<\/code>),\u4f46\u4e5f\u53ef\u80fd\u53e6\u6709\u5b9a\u4e49\uff1b\u5730\u5740<code>2<\/code>\u5b57\u6bb5\u59cb\u7ec8\u7528\u4f5c\u53d1\u5c04\u673a\u5730\u5740(<code>TA<\/code>),\u4f46\u540c\u6837\u53ef\u80fd\u53e6\u6709\u5b9a\u4e49\uff1b\u5730\u5740<code>3<\/code>\u5b57\u6bb5\u901a\u5e38\u63d0\u4f9b\u9644\u52a0\u7684<code>MAC<\/code>\u5730\u5740\u4fe1\u606f\uff1b\u5730\u5740<code>4<\/code>\u5b57\u6bb5\u4ec5\u5728\u65e0\u7ebf\u5206\u5e03\u7cfb\u7edf\u4e2d\u4f7f\u7528<\/p>\n\n\n\n<p>\u53d1\u5f80<code>DS<\/code>\u548c\u6765\u81ea<code>DS<\/code>\u5b50\u5b57\u6bb5\u5171\u6709<code>4<\/code>\u79cd\u53ef\u80fd\u7684\u7ec4\u5408<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7ec4\u5408\u7c7b\u578b<\/th><th>\u542b\u4e49<\/th><\/tr><\/thead><tbody><tr><td>\u53d1\u5f80<code>DS<\/code>\u4e3a<code>0<\/code>\uff0c\u6765\u81ea<code>DS<\/code>\u4e3a<code>0<\/code><\/td><td>1.\u8fd9\u4e9b\u5e27\u662f\u7ba1\u7406\u5e27\u6216\u63a7\u5236\u5e27(\u901a\u5e38\u4e3a\u8fd9\u79cd\u60c5\u51b5)<br>2.\u5728\u72ec\u7acb\u57fa\u672c\u670d\u52a1\u96c6\u4e2d\uff0c\u5ba2\u6237\u7aef\u4e4b\u95f4\u76f4\u63a5\u4f20\u8f93\u6570\u636e<\/td><\/tr><tr><td>\u53d1\u5f80<code>DS<\/code>\u4e3a<code>0<\/code>\uff0c\u6765\u81ea<code>DS<\/code>\u4e3a<code>1<\/code><\/td><td>\u63a5\u5165\u70b9\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u7684<code>802.11<\/code>\u6570\u636e\u5e27(\u4e0b\u884c\u4f20\u8f93)<\/td><\/tr><tr><td>\u53d1\u5f80<code>DS<\/code>\u4e3a<code>1<\/code>\uff0c\u6765\u81ea<code>DS<\/code>\u4e3a<code>0<\/code><\/td><td>\u5ba2\u6237\u7aef\u5411\u63a5\u5165\u70b9\u53d1\u9001<code>802.11<\/code>\u6570\u636e\u5e27(\u4e0a\u884c\u6570\u636e)<\/td><\/tr><tr><td>\u53d1\u5f80<code>DS<\/code>\u4e3a<code>1<\/code>\uff0c\u6765\u81ea<code>DS<\/code>\u4e3a<code>1<\/code><\/td><td>\u6570\u636e\u5e27\u4f7f\u7528\u56db\u5730\u5740\u683c\u5f0f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u56db\u5730\u5740\uff1a<\/strong>\u4ec5\u5f53<strong>\u53d1\u5f80DS<\/strong>\u548c<strong>\u6765\u81eaDS<\/strong>\u8fd9\u4e24\u4e2a\u5b50\u5b57\u6bb5\u5747\u8bbe\u7f6e\u4e3a<code>1<\/code>\u65f6\uff0c\u6570\u636e\u5e27\u624d\u4f1a\u4f7f\u7528\u56db\u5730\u5740\u683c\u5f0f\u3002\u867d\u7136<code>802.11<\/code>\u6807\u51c6\u5e76\u672a\u5b9a\u4e49\u8fd9\u79cd\u683c\u5f0f\u7684\u4f7f\u7528\u89c4\u7a0b\uff0c\u4f46<code>Wi-Fi<\/code>\u4f9b\u5e94\u5546\u7ecf\u5e38\u4f1a\u5b9e\u65bd\u6240\u8c13\u7684\u65e0\u7ebf\u5206\u5e03\u7cfb\u7edf\uff0c\u5982\u65e0\u7ebf\u5c40\u57df\u7f51\u6865\u63a5\u548c\u7f51\u72b6\u7f51\u3002\u5728\u65e0\u7ebf\u5206\u5e03\u7cfb\u7edf\u4e2d\uff0c\u6570\u636e\u5e27\u901a\u8fc7\u7b2c\u4e8c\u79cd\u65e0\u7ebf\u4ecb\u8d28\u4f20\u8f93\uff0c\u6700\u7ec8\u8f6c\u53d1\u7ed9\u6709\u7ebf\u4ecb\u8d28\u3002\u53d1\u5f80<code>DS<\/code>\u548c\u6765\u81ea<code>DS<\/code>\u5b50\u5b57\u6bb5\u5747\u8bbe\u7f6e\u4e3a<code>1<\/code>\u8868\u793a\u4f7f\u7528\u65e0\u7ebf\u5206\u5e03\u7cfb\u7edf\uff0c\u4e14\u9700\u8981<code>4<\/code>\u4e2a\u5730\u5740<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e8f\u5217\u63a7\u5236\u5b57\u6bb5<\/h2>\n\n\n\n<p>\u5e8f\u5217\u63a7\u5236\u5b57\u6bb5\u7531\u4e24\u4e2a\u5b50\u5b57\u6bb5\u6784\u6210\uff0c\u957f\u5ea6\u4e3a<code>16<\/code>\u6bd4\u7279\uff0c\u5728\u8fdb\u884c<code>802.11 MSDU<\/code>\u5206\u7247\u65f6\u4f7f\u7528\u3002<code>IEEE 802.11-2016<\/code>\u6807\u51c6\u652f\u6301\u8fdb\u884c\u5e27\u5206\u7247\u3002\u5206\u7247\u673a\u5236\u5c06<code>802.11<\/code>\u5e27\u5206\u5272\u4e3a\u8f83\u5c0f\u7684\u5206\u7247\uff0c\u5e76\u4e3a\u6bcf\u4e2a\u5206\u7247\u6dfb\u52a0\u5934\u90e8\u4fe1\u606f\uff0c\u7136\u540e\u5355\u72ec\u4f20\u8f93\u6bcf\u4e2a\u5206\u7247\u3002\u6240\u6709<code>802.11<\/code>\u63a5\u5165\u70b9\u90fd\u53ef\u4ee5\u914d\u7f6e\u5206\u7247\u9608\u503c\uff0c\u63a5\u6536\u7aef<code>802.11<\/code>\u65e0\u7ebf\u63a5\u53e3\u540c\u6837\u9700\u8981\u4f7f\u7528\u5e8f\u5217\u63a7\u5236\u5b57\u6bb5\u4e2d\u7684\u4fe1\u606f\u6765\u91cd\u7ec4\u5206\u7247<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">QoS\u63a7\u5236\u5b57\u6bb5<\/h2>\n\n\n\n<p><code>QoS<\/code>\u63a7\u5236(<code>QoS Control<\/code>)\u5b57\u6bb5\u7684\u957f\u5ea6\u4e3a<code>16<\/code>\u6bd4\u7279\uff0c\u7528\u4e8e\u6807\u8bc6\u6570\u636e\u5e27\u7684\u670d\u52a1\u8d28\u91cf(<code>QoS<\/code>)\u53c2\u6570\u3002\u8bf7\u6ce8\u610f\uff0c\u5e76\u975e\u6240\u6709\u6570\u636e\u5e27\u90fd\u5305\u542b<code>QoS<\/code>\u63a7\u5236\u5b57\u6bb5\uff0c\u4ec5\u6709<code>QoS<\/code>\u6570\u636e\u5e27\u7684<code>MAC<\/code>\u5e27\u5934\u4f7f\u7528\u8be5\u5b57\u6bb5\u3002\u4ee5\u592a\u7f51\u5e27\u6dfb\u52a0\u7684<code>802.1Q<\/code>\u5934\u90e8\u5305\u62ec\u4e00\u4e2a\u957f\u5ea6\u4e3a<code>3<\/code>\u6bd4\u7279\u7684\u7528\u6237\u4f18\u5148\u7ea7(<code>UP<\/code>)\u5b57\u6bb5\uff0c\u7528\u4e8e\u6807\u8bc6\u4e0d\u540c\u7c7b\u522b\u7684\u670d\u52a1\u3002<code>802.1D<\/code>\u652f\u6301\u4f18\u5148\u7ea7\u6392\u961f(\u5728\u4ea4\u6362\u5f0f\u4ee5\u592a\u7f51\u4e2d\uff0c\u5141\u8bb8\u67d0\u4e9b\u4ee5\u592a\u7f51\u5e27\u5148\u4e8e\u5176\u4ed6\u5e27\u8f6c\u53d1)\u3002<code>802.1D<\/code>\u670d\u52a1\u7c7b\u522b\u88ab\u6620\u5c04\u5230<code>Wi-Fi<\/code>\u591a\u5a92\u4f53(<code>WMM<\/code>)\u8bbf\u95ee\u7c7b\u522b\uff0c\u800c<code>WMM<\/code>\u901a\u8fc7\u8bed\u97f3\u3001\u89c6\u9891\u3001\u5c3d\u529b\u800c\u4e3a\u3001\u80cc\u666f\u8fd9<code>4<\/code>\u79cd\u8bbf\u95ee\u7c7b\u522b\u6765\u5212\u5206<code>802.11<\/code>\u6d41\u91cf\u4f18\u5148\u7ea7\u3002<code>QoS<\/code>\u63a7\u5236\u5b57\u6bb5\u80fd\u6709\u6548\u6807\u8bc6<code>QoS<\/code>\u6570\u636e\u5e27\u7684<code>WMM<\/code>\u670d\u52a1\u7c7b\u522b\uff0c\u56e0\u6b64\u8be5\u5b57\u6bb5\u6709\u65f6\u4e5f\u79f0\u4e3a<code>WMM QoS<\/code>\u63a7\u5236\u5b57\u6bb5<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">HT\u63a7\u5236\u5b57\u6bb5<\/h2>\n\n\n\n<p><code>HT<\/code>\u63a7\u5236(<code>HT Control<\/code>)\u5b57\u6bb5\u7528\u4e8e<code>802.11n\/ac<\/code>\u53d1\u5c04\u673a\u548c\u63a5\u6536\u673a\u7684\u94fe\u8def\u81ea\u9002\u5e94\u3001\u53d1\u5c04\u6ce2\u675f\u6210\u5f62\u7b49\u9ad8\u7ea7\u529f\u80fd\u3002\u5f53\u5e27\u63a7\u5236\u5b57\u6bb5\u7684<code>+HTC<\/code>\/\u987a\u5e8f(<code>+HTC\/Order<\/code>)\u5b50\u5b57\u6bb5\u8bbe\u7f6e\u4e3a<code>1<\/code>\u65f6\uff0c<code>HT<\/code>\u63a7\u5236\u5b57\u6bb5\u4ec5\u7528\u4e8e\u7ba1\u7406\u5e27\u548c<code>QoS<\/code>\u6570\u636e\u5e27\u3002<code>CWNA<\/code>\u8003\u8bd5\u4e0d\u4f1a\u8003\u67e5<code>HT<\/code>\u63a7\u5236\u5b57\u6bb5\u7684\u5177\u4f53\u5185\u5bb9<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">802.11\u5e27\u4f53<\/h2>\n\n\n\n<p><code>802.11<\/code>\u6807\u51c6\u5b9a\u4e49\u4e863\u79cd\u4e3b\u8981\u7684\u5e27\u7c7b\u578b\uff0c\u5b83\u4eec\u662f\u7ba1\u7406\u5e27\u3001\u63a7\u5236\u5e27\u4e0e\u6570\u636e\u5e27\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5e76\u975e\u6240\u6709\u5e27\u7c7b\u578b\u7684\u5e27\u4f53\u90fd\u643a\u5e26\u76f8\u540c\u7c7b\u578b\u7684\u51c0\u8377\u3002\u5b9e\u9645\u4e0a\uff0c\u63a7\u5236\u5e27\u751a\u81f3\u6ca1\u6709\u5e27\u4f53<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>802.11\u63a7\u5236\u5e27<\/strong> \u53c8\u79f0<code>MAC<\/code>\u7ba1\u7406\u534f\u8bae\u6570\u636e\u5355\u5143(<code>MMPDU<\/code>),\u7531<code>MAC<\/code>\u5e27\u5934\u3001\u5e27\u4f53\u4e0e\u5e27\u5c3e\u6784\u6210\uff0c\u4f46\u4e0d\u643a\u5e26\u4efb\u4f55\u4e0a\u5c42\u4fe1\u606f<\/li>\n\n\n\n<li><strong>802.11\u63a7\u5236\u5e27<\/strong> \u7528\u4e8e\u6e05\u9664\u4fe1\u9053\u3001\u83b7\u53d6\u4fe1\u9053\u5e76\u63d0\u4f9b\u5355\u64ad\u5e27\u786e\u8ba4\u3002\u63a7\u5236\u5e27\u4ec5\u7531\u5e27\u5934\u548c\u5e27\u5c3e\u6784\u6210\uff0c\u6ca1\u6709\u5e27\u4f53<\/li>\n\n\n\n<li><strong>802.11\u6570\u636e\u5e27<\/strong> \u5e27\u4f53\u643a\u5e26\u4e0a\u5c42\u4fe1\u606f(<code>MSDU<\/code>\u51c0\u8377),\u53ef\u4ee5\u901a\u8fc7\u52a0\u5bc6\u6765\u4fdd\u62a4<code>MSDU<\/code>\u51c0\u8377\u7684\u5b89\u5168\u3002\u8bf7\u6ce8\u610f\uff0c\u67d0\u4e9b\u6570\u636e\u5e27\u7684\u5b50\u7c7b\u578b(\u5982\u7a7a\u529f\u80fd\u5e27)\u4e5f\u6ca1\u6709\u5e27\u4f53<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">802.11\u5e27\u5c3e<\/h2>\n\n\n\n<p><code>802.11<\/code>\u5e27\u5c3e\u7684\u4e3b\u8981\u76ee\u7684\u662f\u643a\u5e26\u6574\u4e2a\u5e27\u7684\u6570\u636e\u5b8c\u6574\u6027\u6821\u9a8c\u4fe1\u606f\u3002\u6240\u6709<code>802.11<\/code>\u5e27\u5c3e\u90fd\u5305\u62ec\u5e27\u6821\u9a8c\u5e8f\u5217(<code>FCS<\/code>),\u53c8\u79f0<code>FCS<\/code>\u5b57\u6bb5\u3002\u5e27\u6821\u9a8c\u5e8f\u5217\u5305\u62ec<code>32<\/code>\u4f4d\u5faa\u73af\u5197\u4f59\u6821\u9a8c(<code>CRC<\/code>),\u7528\u4e8e\u9a8c\u8bc1\u63a5\u6536\u5e27\u7684\u5b8c\u6574\u6027\u3002\u5982\u56fe\u6240\u793a\uff0c\u5e27\u6821\u9a8c\u5e8f\u5217\u901a\u8fc7<code>MAC<\/code>\u5e27\u5934\u7684\u6240\u6709\u5b57\u6bb5\u548c\u5e27\u4f53\u8ba1\u7b97\u5f97\u51fa\uff0c\u8fd9\u4e9b\u5b57\u6bb5\u79f0\u4e3a\u8ba1\u7b97\u5b57\u6bb5<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/\u5e27\u6821\u9a8c\u5e8f\u5217-scaled.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1013\" data-original=\"https:\/\/www.garfield-blog.top\/wp-content\/uploads\/2025\/12\/\u5e27\u6821\u9a8c\u5e8f\u5217-scaled.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-413\"  sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u53c2\u8003\u6587\u6863<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u300a\u65e0\u7ebf\u5c40\u57df\u7f51\u6743\u5a01\u6307\u5357 \u7b2c\u4e94\u7248\u300b<\/p>\n\n\n\n<p><a href=\"https:\/\/blog.csdn.net\/zhuhuan_5\/article\/details\/108815007\"><a href=\"https:\/\/github.com\/Garfield-1\/Books\/blob\/master\/11_802.11%E5%8D%8F%E8%AE%AE%E8%A7%84%E8%8C%83\/80211-2016.pdf\">80211-2016\u89c4\u8303<\/a><\/a><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u6570\u636e\u94fe\u8def\u5c42\u5206\u5c42 \u6570\u636e\u94fe\u8def\u5c42\u5206\u4e3a\u4e24\u4e2a\u5b50\u5c42\uff0c\u4e0a\u5c42\u662f802.2\u903b\u8f91\u94fe\u8def\u63a7\u5236(LLC)\u5b50\u5c42\uff0c\u4e0b\u5c42\u662f\u4ecb\u8d28\u8bbf\u95ee\u63a7\u5236(MAC [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[9,11],"tags":[],"class_list":["post-407","post","type-post","status-publish","format-standard","hentry","category-wifi","category-11"],"_links":{"self":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts\/407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=407"}],"version-history":[{"count":5,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts\/407\/revisions"}],"predecessor-version":[{"id":443,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts\/407\/revisions\/443"}],"wp:attachment":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}