{"id":97978,"date":"2024-09-19T16:51:41","date_gmt":"2024-09-19T08:51:41","guid":{"rendered":"\/\/www.viralrail.com\/?p=97978"},"modified":"2024-09-19T16:51:46","modified_gmt":"2024-09-19T08:51:46","slug":"cchccdqb","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/97978.html","title":{"rendered":"CSMA\/CA\u548cCSMA\/CD\u7684\u533a\u522b"},"content":{"rendered":"\n<p>\u3000\u3000<strong><a href=\"https:\/\/baike.baidu.com\/item\/CSMA%2FCA\/10898090\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/baike.baidu.com\/item\/CSMA%2FCA\/10898090\" rel=\"noreferrer noopener nofollow\">CSMA\/CA<\/a><\/strong>(<strong>Carrier Sense Multiple Access with Collision Avoidance<\/strong>\uff0c\u8f7d\u6ce2\u4fa6\u542c\u591a\u8def\u8bbf\u95ee\u4e0e\u51b2\u7a81\u907f\u514d)\u548c<strong><a href=\"https:\/\/baike.baidu.com\/item\/CSMA%2FCD%E5%8D%8F%E8%AE%AE\/9441820\" data-type=\"link\" data-id=\"https:\/\/baike.baidu.com\/item\/CSMA%2FCD%E5%8D%8F%E8%AE%AE\/9441820\" target=\"_blank\" rel=\"noopener\">CSMA\/CD<\/a><\/strong>(<strong>Carrier Sense Multiple Access with Collision Detection<\/strong>\uff0c\u8f7d\u6ce2\u4fa6\u542c\u591a\u8def\u8bbf\u95ee\u4e0e\u51b2\u7a81\u68c0\u6d4b)\u662f\u4e24\u79cd\u4e0d\u540c\u7684\u7f51\u7edc\u63a5\u5165\u63a7\u5236\u673a\u5236\uff0c\u4e3b\u8981\u7528\u4e8e\u907f\u514d\u6216\u89e3\u51b3\u6570\u636e\u4f20\u8f93\u4e2d\u7684\u51b2\u7a81\u95ee\u9898\u3002\u4ee5\u4e0b\u662f\u5b83\u4eec\u7684\u4e3b\u8981\u533a\u522b\uff1a<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 CSMA\/CA\u548cCSMA\/CD\u7684\u533a\u522b\u5bf9\u6bd4<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30001.&nbsp;<strong>\u57fa\u672c\u5b9a\u4e49<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CA<\/strong>\uff1a\u901a\u8fc7<strong>\u907f\u514d\u51b2\u7a81<\/strong>\u6765\u7ba1\u7406\u7f51\u7edc\u901a\u4fe1\u3002\u5728\u53d1\u9001\u6570\u636e\u524d\uff0c\u8bbe\u5907\u5148<strong>\u4fa6\u542c\u7f51\u7edc<\/strong>\u662f\u5426\u7a7a\u95f2\uff0c\u5982\u679c\u7f51\u7edc\u7e41\u5fd9\uff0c\u4f1a\u7b49\u5f85\u4e00\u6bb5\u968f\u673a\u65f6\u95f4\u540e\u518d\u91cd\u65b0\u4fa6\u542c\uff0c\u786e\u4fdd\u5728\u6570\u636e\u53d1\u9001\u4e4b\u524d\u5c3d\u91cf\u907f\u514d\u51b2\u7a81\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CD<\/strong>\uff1a\u901a\u8fc7<strong>\u68c0\u6d4b\u51b2\u7a81<\/strong>\u6765\u5904\u7406\u7f51\u7edc\u901a\u4fe1\u3002\u5728\u53d1\u9001\u6570\u636e\u540e\uff0c\u8bbe\u5907<strong>\u4fa6\u542c\u7f51\u7edc<\/strong>\uff0c\u5982\u679c\u53d1\u73b0\u4e0e\u5176\u4ed6\u8bbe\u5907\u53d1\u751f\u51b2\u7a81\uff0c\u5b83\u4f1a\u7acb\u5373\u505c\u6b62\u4f20\u8f93\uff0c\u5e76\u91cd\u65b0\u53d1\u9001\u6570\u636e\u5305\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30002.&nbsp;<strong>\u5de5\u4f5c\u673a\u5236<\/strong>\uff1a<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u3000\u3000<strong>CSMA\/CA<\/strong>\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000\u8bbe\u5907\u5728\u53d1\u9001\u6570\u636e\u524d\u5148<strong>\u4fa6\u542c<\/strong>\u7f51\u7edc\uff0c\u5982\u679c\u7f51\u7edc\u7a7a\u95f2\u5219\u53d1\u9001\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u5982\u679c\u7f51\u7edc\u7e41\u5fd9\uff0c\u8bbe\u5907\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4\u540e\u518d\u4fa6\u542c\uff0c\u76f4\u5230\u7f51\u7edc\u7a7a\u95f2\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u5728\u6b64\u673a\u5236\u4e2d\uff0c\u6570\u636e\u53d1\u9001\u4e4b\u524d<strong>\u5c3d\u91cf\u907f\u514d<\/strong>\u51b2\u7a81\u53d1\u751f\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u5e38\u7528\u4e8e<strong>\u65e0\u7ebf\u7f51\u7edc<\/strong>(\u5982Wi-Fi)\uff0c\u56e0\u4e3a\u5728\u65e0\u7ebf\u7f51\u7edc\u4e2d\u68c0\u6d4b\u51b2\u7a81\u6bd4\u8f83\u56f0\u96be\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u3000\u3000<strong>CSMA\/CD<\/strong>\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000\u8bbe\u5907\u5728\u53d1\u9001\u6570\u636e\u524d\u5148<strong>\u4fa6\u542c<\/strong>\u7f51\u7edc\uff0c\u5982\u679c\u7f51\u7edc\u7a7a\u95f2\u5219\u53d1\u9001\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u5728\u53d1\u9001\u6570\u636e\u7684\u8fc7\u7a0b\u4e2d\uff0c\u8bbe\u5907\u7ee7\u7eed\u4fa6\u542c\u7f51\u7edc\uff0c\u5982\u679c\u68c0\u6d4b\u5230<strong>\u51b2\u7a81<\/strong>(\u4e24\u53f0\u8bbe\u5907\u540c\u65f6\u53d1\u9001\u6570\u636e)\uff0c\u8bbe\u5907\u4f1a\u505c\u6b62\u53d1\u9001\uff0c\u5e76\u5e7f\u64ad<strong>\u51b2\u7a81\u4fe1\u53f7<\/strong>\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u4e24\u53f0\u8bbe\u5907\u90fd\u4f1a\u7b49\u5f85\u4e00\u6bb5<strong>\u968f\u673a\u65f6\u95f4<\/strong>\u540e\u91cd\u65b0\u5c1d\u8bd5\u53d1\u9001\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u4e3b\u8981\u7528\u4e8e<strong>\u6709\u7ebf\u7f51\u7edc<\/strong>(\u5982\u4ee5\u592a\u7f51)\uff0c\u56e0\u4e3a\u5728\u6709\u7ebf\u7f51\u7edc\u4e2d\u53ef\u4ee5\u8f7b\u677e\u5730\u68c0\u6d4b\u5230\u51b2\u7a81\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30003.&nbsp;<strong>\u5e94\u7528\u573a\u666f<\/strong>\uff1a<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u3000\u3000<strong>CSMA\/CA<\/strong>\uff1a<\/h4>\n\n\n\n<p>\u3000\u3000\u4e3b\u8981\u7528\u4e8e<strong>\u65e0\u7ebf\u7f51\u7edc<\/strong>(\u5982Wi-Fi)\u3002\u56e0\u4e3a\u5728\u65e0\u7ebf\u901a\u4fe1\u4e2d\uff0c\u8bbe\u5907\u4e0d\u80fd\u540c\u65f6\u53d1\u9001\u548c\u63a5\u6536\u4fe1\u53f7\uff0c\u65e0\u6cd5\u5728\u53d1\u9001\u65f6\u4fa6\u542c\u51b2\u7a81\uff0c\u56e0\u6b64\u9700\u8981<strong>\u907f\u514d\u51b2\u7a81<\/strong>\u7684\u7b56\u7565\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u3000\u3000<strong>CSMA\/CD<\/strong>\uff1a<\/h4>\n\n\n\n<p>\u3000\u3000\u4e3b\u8981\u7528\u4e8e<strong>\u6709\u7ebf\u7f51\u7edc<\/strong>(\u5982\u65e9\u671f\u7684\u4ee5\u592a\u7f51)\u3002\u5728\u6709\u7ebf\u7f51\u7edc\u4e2d\uff0c\u8bbe\u5907\u53ef\u4ee5\u5728\u53d1\u9001\u6570\u636e\u7684\u540c\u65f6\u68c0\u6d4b\u5230\u662f\u5426\u53d1\u751f\u51b2\u7a81\uff0c\u56e0\u6b64\u53ef\u4ee5\u4f7f\u7528<strong>\u51b2\u7a81\u68c0\u6d4b<\/strong>\u673a\u5236\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30004.&nbsp;<strong>\u51b2\u7a81\u5904\u7406\u65b9\u5f0f<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CA<\/strong>\uff1a\u5728<strong>\u6570\u636e\u53d1\u9001\u524d<\/strong>\u901a\u8fc7\u76d1\u542c\u7f51\u7edc\u5e76\u5728\u9700\u8981\u65f6\u63a8\u8fdf\u53d1\u9001\u6765<strong>\u907f\u514d\u51b2\u7a81<\/strong>\uff0c\u5c3d\u91cf\u4e0d\u8ba9\u51b2\u7a81\u53d1\u751f\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CD<\/strong>\uff1a\u5982\u679c\u68c0\u6d4b\u5230\u51b2\u7a81\uff0c\u8bbe\u5907\u4f1a\u505c\u6b62\u53d1\u9001\u5e76\u5728\u7b49\u5f85\u4e00\u6bb5\u968f\u673a\u65f6\u95f4\u540e<strong>\u91cd\u65b0\u53d1\u9001\u6570\u636e<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30005.&nbsp;<strong>\u6548\u7387<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CA<\/strong>\uff1a\u7531\u4e8e\u5b83\u5728\u53d1\u9001\u6570\u636e\u4e4b\u524d\u901a\u8fc7\u7b49\u5f85\u548c\u4fa6\u542c\u6765\u907f\u514d\u51b2\u7a81\uff0c\u5b83\u5728\u9ad8\u5ea6\u62e5\u6324\u7684\u7f51\u7edc\u4e2d\u53ef\u80fd\u4f1a\u589e\u52a0<strong>\u5ef6\u8fdf<\/strong>\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CD<\/strong>\uff1a\u5728\u53d1\u751f\u51b2\u7a81\u540e\u9700\u8981\u505c\u6b62\u4f20\u8f93\u5e76\u91cd\u65b0\u53d1\u9001\u6570\u636e\uff0c\u8fd9\u4f1a\u6d6a\u8d39<strong>\u5e26\u5bbd<\/strong>\uff0c\u5c24\u5176\u662f\u5728\u7f51\u7edc\u7e41\u5fd9\u65f6\uff0c\u9891\u7e41\u7684\u51b2\u7a81\u68c0\u6d4b\u4f1a\u964d\u4f4e\u6548\u7387\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30006.&nbsp;<strong>\u7269\u7406\u4ecb\u8d28<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CA<\/strong>\uff1a\u7531\u4e8e\u65e0\u7ebf\u7f51\u7edc\u96be\u4ee5\u540c\u65f6\u53d1\u9001\u548c\u68c0\u6d4b\u51b2\u7a81\uff0cCSMA\/CA\u901a\u5e38\u7528\u4e8e<strong>\u65e0\u7ebf\u4f20\u8f93\u4ecb\u8d28<\/strong>\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CD<\/strong>\uff1a\u5e38\u7528\u4e8e<strong>\u6709\u7ebf\u4f20\u8f93\u4ecb\u8d28<\/strong>\uff0c\u7279\u522b\u662f\u65e9\u671f\u7684\u4ee5\u592a\u7f51\uff0c\u5728\u5171\u4eab\u7684\u7535\u7f06\u4e0a\u4f20\u8f93\u6570\u636e\u65f6\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30007.&nbsp;<strong>\u73b0\u4ee3\u5e94\u7528<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CA<\/strong>\uff1a\u7ee7\u7eed\u5e94\u7528\u4e8e\u73b0\u4ee3**Wi-Fi(802.11\u6807\u51c6)**\u65e0\u7ebf\u7f51\u7edc\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CD<\/strong>\uff1a\u5728\u73b0\u4ee3\u4ee5\u592a\u7f51\u4e2d\u7531\u4e8e\u4ea4\u6362\u673a\u7684\u5f15\u5165\uff0c\u51b2\u7a81\u57df\u88ab\u6709\u6548\u9694\u79bb\uff0c\u56e0\u6b64<strong>CSMA\/CD\u5df2\u7ecf\u9010\u6e10\u4e0d\u518d\u4f7f\u7528<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30008. \u603b\u7ed3\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CA<\/strong>\uff1a\u4e3b\u8981\u7528\u4e8e<strong>\u65e0\u7ebf\u7f51\u7edc<\/strong>\uff0c\u901a\u8fc7<strong>\u907f\u514d\u51b2\u7a81<\/strong>\u6765\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u6210\u529f\u7387\uff0c\u9002\u5408\u590d\u6742\u7684\u65e0\u7ebf\u73af\u5883\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>CSMA\/CD<\/strong>\uff1a\u4e3b\u8981\u7528\u4e8e\u65e9\u671f\u7684<strong>\u6709\u7ebf\u7f51\u7edc<\/strong>\uff0c\u901a\u8fc7<strong>\u68c0\u6d4b\u51b2\u7a81<\/strong>\u5e76\u5728\u51b2\u7a81\u540e\u91cd\u65b0\u53d1\u9001\u6570\u636e\uff0c\u4f46\u7531\u4e8e\u73b0\u4ee3\u4ea4\u6362\u7f51\u7edc\u7684\u666e\u53ca\uff0c\u5b83\u5df2\u8f83\u5c11\u4f7f\u7528\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 CSMA\/CD\u548cCSMA\/CA\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u6027\u80fd\u6bd4\u8f83\u5982\u4f55?<\/h2>\n\n\n\n<p>\u3000\u3000CSMA\/CD\u548cCSMA\/CA\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u6027\u80fd\u6bd4\u8f83\u53ef\u4ee5\u4ece\u591a\u4e2a\u65b9\u9762\u8fdb\u884c\u5206\u6790\uff0c\u5305\u62ec\u5e94\u7528\u573a\u666f\u3001\u51b2\u7a81\u68c0\u6d4b\u673a\u5236\u4ee5\u53ca\u6548\u7387\u7b49\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4ece\u5e94\u7528\u573a\u666f\u6765\u770b\uff0cCSMA\/CD\u4e3b\u8981\u5e94\u7528\u4e8e\u4ee5\u592a\u7f51\u7b49\u603b\u7ebf\u578b\u4ecb\u8d28\uff0c\u800cCSMA\/CA\u5219\u5e7f\u6cdb\u5e94\u7528\u4e8e\u65e0\u7ebf\u5c40\u57df\u7f51(WLAN)\u548c\u7269\u8054\u7f51\u7b49\u9886\u57df\u3002\u8fd9\u662f\u56e0\u4e3aCSMA\/CD\u901a\u8fc7\u51b2\u7a81\u68c0\u6d4b\u6765\u5904\u7406\u7f51\u7edc\u4e2d\u7684\u51b2\u7a81\uff0c\u9002\u7528\u4e8e\u6709\u660e\u786e\u7269\u7406\u8fde\u63a5\u7684\u7f51\u7edc\u73af\u5883;\u800cCSMA\/CA\u901a\u8fc7\u907f\u514d\u51b2\u7a81\u6765\u51cf\u5c11\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u7684\u5e72\u6270\uff0c\u9002\u5408\u4e8e\u65e0\u7ebf\u7f51\u7edc\u4e2d\u5b58\u5728\u9690\u85cf\u7ad9\u7b49\u95ee\u9898\u7684\u573a\u666f\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4ece\u51b2\u7a81\u68c0\u6d4b\u673a\u5236\u6765\u770b\uff0cCSMA\/CD\u4f9d\u8d56\u4e8e\u8f7d\u6ce2\u76d1\u542c\u548c\u51b2\u7a81\u68c0\u6d4b(Collision Detection)\uff0c\u5141\u8bb8\u591a\u4e2a\u8bbe\u5907\u5728\u540c\u4e00\u65f6\u95f4\u5c1d\u8bd5\u53d1\u9001\u6570\u636e\uff0c\u5e76\u901a\u8fc7\u52a8\u6001\u9000\u907f\u673a\u5236\u9632\u6b62\u78b0\u649e\u5e76\u63d0\u9ad8\u7f51\u7edc\u6548\u7387\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0cCSMA\/CA\u91c7\u7528\u80fd\u91cf\u68c0\u6d4b\u3001\u8f7d\u6ce2\u68c0\u6d4b\u548c\u80fd\u91cf\u8f7d\u6ce2\u6df7\u5408\u68c0\u6d4b\u7684\u65b9\u6cd5\uff0c\u80fd\u591f\u6709\u6548\u907f\u514d\u6570\u636e\u51b2\u7a81\uff0c\u7279\u522b\u662f\u5728\u65e0\u7ebf\u7f51\u7edc\u4e2d\uff0c\u8fd9\u79cd\u673a\u5236\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u56e0\u4fe1\u53f7\u5e72\u6270\u5bfc\u81f4\u7684\u901a\u4fe1\u5931\u8d25\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4ece\u6548\u7387\u89d2\u5ea6\u6765\u770b\uff0cCSMA\/CD\u5728\u8282\u70b9\u6570\u91cf\u4e0d\u591a\u3001\u4f20\u8f93\u4fe1\u606f\u91cf\u8f83\u5c11\u65f6\u8868\u73b0\u8f83\u597d\uff0c\u56e0\u4e3a\u5b83\u80fd\u591f\u5728\u8f83\u77ed\u7684\u65f6\u95f4\u5185\u5b8c\u6210\u51b2\u7a81\u68c0\u6d4b\u548c\u5904\u7406\u3002\u7136\u800c\uff0c\u5728\u590d\u6742\u7684\u65e0\u7ebf\u73af\u5883\u4e2d\uff0cCSMA\/CA\u7531\u4e8e\u5176\u907f\u514d\u51b2\u7a81\u7684\u7279\u6027\uff0c\u901a\u5e38\u80fd\u63d0\u4f9b\u66f4\u9ad8\u7684\u541e\u5410\u91cf\u548c\u66f4\u4f4e\u7684\u5ef6\u8fdf\u3002<\/p>\n\n\n\n<p>\u3000\u3000CSMA\/CD\u548cCSMA\/CA\u5404\u6709\u4f18\u52bf\u548c\u9002\u7528\u573a\u666f\u3002CSMA\/CD\u9002\u7528\u4e8e\u4ee5\u592a\u7f51\u7b49\u56fa\u5b9a\u7269\u7406\u8fde\u63a5\u7684\u7f51\u7edc\u73af\u5883\uff0c\u80fd\u591f\u5feb\u901f\u54cd\u5e94\u51b2\u7a81\u5e76\u6062\u590d\u901a\u4fe1;\u800cCSMA\/CA\u5219\u66f4\u9002\u5408\u65e0\u7ebf\u7f51\u7edc\uff0c\u901a\u8fc7\u907f\u514d\u51b2\u7a81\u63d0\u9ad8\u4e86\u6574\u4f53\u7f51\u7edc\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 CSMA\/CA\u7684\u51b2\u7a81\u9884\u9632\u673a\u5236\u5728\u4e0d\u540c\u65e0\u7ebf\u7f51\u7edc\u6807\u51c6\u4e2d\u5982\u4f55\u5b9e\u73b0\u7684?<\/h2>\n\n\n\n<p>\u3000\u3000CSMA\/CA(\u8f7d\u6ce2\u4fa6\u542c\u591a\u8def\u8bbf\u95ee\/\u51b2\u7a81\u907f\u514d)\u673a\u5236\u5728\u4e0d\u540c\u7684\u65e0\u7ebf\u7f51\u7edc\u6807\u51c6\u4e2d\uff0c\u5982802.11a\/b\/g\/n\uff0c\u4e3b\u8981\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u5b9e\u73b0\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u4ecb\u8d28\u8bbf\u95ee\u63a7\u5236\u5c42\u7684\u5b9e\u73b0<\/strong>\uff1aCSMA\/CA\u673a\u5236\u662fIEEE 802.11\u6807\u51c6\u4e2d\u5b9a\u4e49\u7684\u4e00\u79cd\u4ecb\u8d28\u8bbf\u95ee\u63a7\u5236(MAC)\u534f\u8bae\u3002\u5b83\u5728OSI\u6a21\u578b\u7684\u6570\u636e\u94fe\u8def\u5c42\u8fd0\u884c\uff0c\u7528\u4e8e\u7ba1\u7406\u8bbe\u5907\u5982\u4f55\u5171\u4eab\u65e0\u7ebf\u4fe1\u9053\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u5de5\u4f5c\u6d41\u7a0b<\/strong>\uff1a\u8bbe\u5907\u5728\u53d1\u9001\u6570\u636e\u524d\u9700\u8981\u76d1\u542c\u5a92\u4ecb\u662f\u5426\u7a7a\u95f2\uff0c\u4ee5\u907f\u514d\u51b2\u7a81\u3002\u5982\u679c\u68c0\u6d4b\u5230\u4fe1\u9053\u7e41\u5fd9\uff0c\u5219\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4\u540e\u518d\u5c1d\u8bd5\u53d1\u9001\u6570\u636e\u3002\u8fd9\u79cd\u673a\u5236\u786e\u4fdd\u4e86\u5728\u540c\u4e00\u65f6\u95f4\u53ea\u6709\u4e00\u4e2a\u8bbe\u5907\u53ef\u4ee5\u4f7f\u7528\u4fe1\u9053\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u8df3\u9891\u6280\u672f\u7684\u5e94\u7528<\/strong>\uff1a\u5728802.11b\u6807\u51c6\u4e2d\uff0c\u9664\u4e86\u4f7f\u7528CSMA\/CA\u534f\u8bae\u5916\uff0c\u8fd8\u91c7\u7528\u4e86\u8df3\u9891\u6280\u672f\u6765\u51cf\u5c11\u5e72\u6270\u548c\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\u3002\u8df3\u9891\u6280\u672f\u901a\u8fc7\u5728\u591a\u4e2a\u4fe1\u9053\u4e0a\u53d1\u9001\u6570\u636e\uff0c\u8fdb\u4e00\u6b65\u589e\u5f3a\u4e86\u7cfb\u7edf\u7684\u6297\u5e72\u6270\u80fd\u529b\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4e8c\u8fdb\u5236\u6307\u6570\u9000\u907f\u7b97\u6cd5<\/strong>\uff1aCSMA\/CA\u534f\u8bae\u4f7f\u7528\u5206\u5e03\u534f\u8c03\u529f\u80fd(DCF)\u4e2d\u7684\u4e8c\u8fdb\u5236\u6307\u6570\u9000\u907f\u7b97\u6cd5\u6765\u5904\u7406\u4fe1\u9053\u51b2\u7a81\u3002\u5f53\u53d1\u751f\u51b2\u7a81\u65f6\uff0c\u8bbe\u5907\u4f1a\u968f\u673a\u9009\u62e9\u4e00\u4e2a\u65f6\u95f4\u5ef6\u8fdf\u540e\u518d\u6b21\u5c1d\u8bd5\u53d1\u9001\u6570\u636e\uff0c\u4ece\u800c\u51cf\u5c11\u51b2\u7a81\u7684\u53ef\u80fd\u6027\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u6700\u5927\u541e\u5410\u91cf<\/strong>\uff1a\u8003\u8651\u5230CSMA\/CA\u534f\u8bae\u7684\u5f00\u9500\uff0c\u4e0d\u540c\u6807\u51c6\u4e0b\u7684\u8bbe\u5907\u95f4\u6700\u5927\u541e\u5410\u91cf\u6709\u6240\u4e0d\u540c\u3002\u4f8b\u5982\uff0c\u5728802.11g\u6807\u51c6\u4e0b\uff0c\u8bbe\u5907\u95f4\u7684\u6700\u5927\u541e\u5410\u91cf\u53ef\u4ee5\u8fbe\u523031.4Mbps\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>ACK\u4fe1\u53f7\u786e\u8ba4<\/strong>\uff1aCSMA\/CA\u5229\u7528ACK(\u786e\u8ba4)\u4fe1\u53f7\u6765\u907f\u514d\u51b2\u7a81\u7684\u53d1\u751f\u3002\u53ea\u6709\u5f53\u5ba2\u6237\u7aef\u6536\u5230\u7f51\u7edc\u4e0a\u8fd4\u56de\u7684ACK\u4fe1\u53f7\u540e\uff0c\u624d\u786e\u8ba4\u9001\u51fa\u7684\u6570\u636e\u5df2\u7ecf\u6b63\u786e\u5230\u8fbe\u76ee\u7684\u5730\u5740\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 CSMA\/CD\u7684\u622a\u65ad\u4e8c\u8fdb\u5236\u6307\u6570\u9000\u907f\u7b97\u6cd5\u7684\u5177\u4f53\u5de5\u4f5c\u539f\u7406<\/h2>\n\n\n\n<p>\u3000\u3000CSMA\/CD\u534f\u8bae\u4e2d\u7684\u622a\u65ad\u4e8c\u8fdb\u5236\u6307\u6570\u9000\u907f\u7b97\u6cd5\u662f\u4e00\u79cd\u7528\u4e8e\u51cf\u5c11\u7f51\u7edc\u51b2\u7a81\u7684\u673a\u5236\u3002\u5176\u5177\u4f53\u5de5\u4f5c\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u521d\u59cb\u5316\u53c2\u6570<\/strong>\uff1a\u5f53\u7b2c\u4e00\u6b21\u53d1\u751f\u51b2\u7a81\u65f6\uff0c\u8bbe\u7f6e\u4e00\u4e2a\u53c2\u6570L=2.\u8fd9\u4e2a\u53c2\u6570\u8868\u793a\u51b2\u7a81\u7a97\u53e3\u7684\u5927\u5c0f\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u968f\u673a\u9009\u62e9\u9000\u907f\u65f6\u95f4<\/strong>\uff1a\u5728\u6bcf\u6b21\u51b2\u7a81\u540e\uff0c\u8282\u70b9\u9700\u8981\u7b49\u5f85\u4e00\u4e2a\u968f\u673a\u65f6\u95f4\u518d\u5c1d\u8bd5\u91cd\u65b0\u53d1\u9001\u6570\u636e\u3002\u8fd9\u4e2a\u968f\u673a\u65f6\u95f4\u662f\u4ece1\u5230L\u4e2a\u65f6\u9699\u4e2d\u9009\u62e9\u7684\u4e00\u4e2a\u503c\u3002\u4e00\u4e2a\u65f6\u9699\u7b49\u4e8e\u4e24\u7ad9\u70b9\u4e4b\u95f4\u6700\u5927\u4f20\u8f93\u65f6\u5ef6\u7684\u4e24\u500d\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u52a0\u500d\u51b2\u7a81\u7a97\u53e3<\/strong>\uff1a\u5982\u679c\u5728\u5c1d\u8bd5\u91cd\u65b0\u53d1\u9001\u6570\u636e\u65f6\u518d\u6b21\u53d1\u751f\u51b2\u7a81\uff0c\u5219\u5c06\u53c2\u6570L\u52a0\u500d\uff0c\u5373L=2L\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u91cd\u590d\u6b65\u9aa42\u548c3<\/strong>\uff1a\u6bcf\u6b21\u51b2\u7a81\u540e\u90fd\u91cd\u590d\u4e0a\u8ff0\u8fc7\u7a0b\uff0c\u76f4\u5230\u6ca1\u6709\u51b2\u7a81\u4e3a\u6b62\u3002\u5982\u679c\u8fbe\u5230\u9884\u8bbe\u7684\u6700\u5927\u91cd\u4f20\u6b21\u6570(\u901a\u5e38\u4e3a4\u6b21)\uff0c\u5219\u8be5\u8282\u70b9\u505c\u6b62\u53d1\u9001\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u622a\u65ad\u673a\u5236<\/strong>\uff1a\u4e3a\u4e86\u9632\u6b62\u65e0\u9650\u671f\u5730\u589e\u52a0\u9000\u907f\u65f6\u95f4\uff0c\u5f15\u5165\u4e86\u622a\u65ad\u673a\u5236\u3002\u5f53\u51b2\u7a81\u6b21\u6570\u8d85\u8fc7\u4e00\u5b9a\u9608\u503c(\u4f8b\u59824\u6b21)\u65f6\uff0c\u9000\u907f\u65f6\u95f4\u4e0d\u518d\u7ee7\u7eed\u52a0\u500d\uff0c\u800c\u662f\u6309\u7167\u6700\u5927\u503c\u8fdb\u884c\u9000\u907f\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e94\u3001 \u9664\u4e86CSMA\/CA\u4e4b\u5916\u8fd8\u6709\u54ea\u4e9b\u5176\u4ed6\u51b2\u7a81\u68c0\u6d4b\u548c\u5904\u7406\u673a\u5236?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728\u73b0\u4ee3\u65e0\u7ebf\u7f51\u7edc\u4e2d\uff0c\u9664\u4e86CSMA\/CA(\u8f7d\u6ce2\u4fa6\u542c\u591a\u8def\u8bbf\u95ee\/\u51b2\u7a81\u907f\u514d)\u4e4b\u5916\uff0c\u8fd8\u6709\u5176\u4ed6\u51e0\u79cd\u51b2\u7a81\u68c0\u6d4b\u548c\u5904\u7406\u673a\u5236\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>RTS\/CTS\u673a\u5236<\/strong>\uff1a\u8fd9\u662f802.11 DCF(\u5206\u5e03\u5f0f\u534f\u8c03\u529f\u80fd)\u4e2d\u7684\u4e00\u79cd\u673a\u5236\uff0c\u7528\u4e8e\u9632\u6b62\u9690\u85cf\u8282\u70b9\u5bfc\u81f4\u7684\u51b2\u7a81\u3002\u7136\u800c\uff0c\u8fd9\u79cd\u673a\u5236\u5e76\u4e0d\u80fd\u5b8c\u5168\u6709\u6548\u5730\u9632\u6b62\u9690\u85cf\u8282\u70b9\u4e4b\u95f4\u7684\u51b2\u7a81\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>CCA\uff08Clear Channel Assessment\uff09\u673a\u5236<\/strong>\uff1a\u8fd9\u662f802.11\u534f\u8bae\u4e2d\u7684\u4fe1\u9053\u8bc4\u4f30\u673a\u5236\uff0c\u901a\u8fc7\u80fd\u91cf\u68c0\u6d4b\u6765\u5224\u65ad\u4fe1\u9053\u662f\u5426\u7a7a\u95f2\uff0c\u4ece\u800c\u907f\u514d\u51b2\u7a81\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4fe1\u53f7\u7f16\u89e3\u7801\u6280\u672f<\/strong>\uff1a\u5728\u8fd1\u8ddd\u79bb\u65e0\u7ebf\u901a\u4fe1\u7f51\u7edc\u4e2d\uff0c\u91c7\u7528\u4fe1\u53f7\u7f16\u89e3\u7801\u6280\u672f\u6765\u51cf\u5c11\u901a\u4fe1\u5e72\u6270\uff0c\u51b2\u7a81\u5206\u89e3\u662f\u4e00\u79cd\u53bb\u5e72\u6270\u6280\u672f\uff0c\u826f\u597d\u7684\u7f16\u89e3\u7801\u80fd\u591f\u6709\u6548\u63d0\u9ad8\u51b2\u7a81\u5206\u89e3\u6027\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u516d\u3001 CSMA\/CD\u548cCSMA\/CA\u5728\u7f51\u7edc\u5b89\u5168\u6027\u65b9\u9762\u6709\u4f55\u4e0d\u540c?<\/h2>\n\n\n\n<p>\u3000\u3000CSMA\/CD\u548cCSMA\/CA\u5728\u7f51\u7edc\u5b89\u5168\u6027\u65b9\u9762\u6709\u663e\u8457\u7684\u4e0d\u540c\u3002<\/p>\n\n\n\n<p>\u3000\u3000CSMA\/CD(Carrier Sense Multiple Access with Collision Detection)\u662f\u4e00\u79cd\u7528\u4e8e\u6709\u7ebf\u5c40\u57df\u7f51\u7684\u6280\u672f\uff0c\u5176\u6838\u5fc3\u601d\u60f3\u662f\u5148\u542c\u518d\u8bf4\u3002\u5728\u53d1\u9001\u6570\u636e\u4e4b\u524d\uff0c\u8282\u70b9\u4f1a\u76d1\u542c\u4fe1\u9053\u662f\u5426\u7a7a\u95f2\uff0c\u5982\u679c\u4fe1\u9053\u7a7a\u95f2\uff0c\u5219\u5f00\u59cb\u53d1\u9001\u6570\u636e;\u5982\u679c\u4fe1\u9053\u7e41\u5fd9\uff0c\u5219\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4\u540e\u518d\u6b21\u5c1d\u8bd5\u3002\u7531\u4e8eCSMA\/CD\u4f9d\u8d56\u4e8e\u6709\u7ebf\u4ecb\u8d28\uff0c\u56e0\u6b64\u5176\u5b89\u5168\u6027\u4e3b\u8981\u4f53\u73b0\u5728\u7269\u7406\u5c42\u7684\u4fdd\u62a4\u4e0a\uff0c\u4f8b\u5982\u901a\u8fc7\u7535\u7f06\u7684\u7269\u7406\u8fde\u63a5\u6765\u9632\u6b62\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u76f8\u6bd4\u4e4b\u4e0b\uff0cCSMA\/CA(Carrier Sense Multiple Access with Collision Avoidance)\u4e3b\u8981\u7528\u4e8e\u65e0\u7ebf\u5c40\u57df\u7f51(WLAN)\uff0c\u7279\u522b\u662f802.11\u6807\u51c6\u4e2d\u7684\u534f\u8bae\u3002CSMA\/CA\u4e0d\u4ec5\u5173\u6ce8\u51b2\u7a81\u7684\u907f\u514d\uff0c\u8fd8\u901a\u8fc7\u4f7f\u7528\u52a0\u5bc6\u548c\u8ba4\u8bc1\u6280\u672f\u6765\u4fdd\u62a4\u6570\u636e\u4f20\u8f93\u7684\u5b89\u5168\u6027\u3002\u6b64\u5916\uff0cCSMA\/CA\u534f\u8bae\u4e2d\u5f15\u5165\u4e86CTS(Clear To Send)\u5e27\u548cRTS(Request To Send)\u5e27\uff0c\u8fd9\u4e9b\u673a\u5236\u53ef\u4ee5\u6709\u6548\u907f\u514d\u6765\u81ea\u9690\u85cf\u7ad9\u70b9\u7684\u51b2\u7a81\uff0c\u5e76\u63d0\u9ad8\u7f51\u7edc\u7684\u5b89\u5168\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CSMA\/CA(Carrier Sense Multiple Access with Collision Avoidance\uff0c\u8f7d\u6ce2\u4fa6\u542c\u591a\u8def\u8bbf\u95ee\u4e0e\u51b2\u7a81\u907f\u514d)\u548cCSMA\/CD(Carrier Sense Multiple Access with Collision Detection<\/p>\n","protected":false},"author":1,"featured_media":97633,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[137],"class_list":["post-97978","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-txxy"],"_links":{"self":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/97978"}],"collection":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/comments?post=97978"}],"version-history":[{"count":0,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/97978\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media\/97633"}],"wp:attachment":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media?parent=97978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/categories?post=97978"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/tags?post=97978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}