{"id":97980,"date":"2024-09-19T16:55:53","date_gmt":"2024-09-19T08:55:53","guid":{"rendered":"\/\/www.viralrail.com\/?p=97980"},"modified":"2024-09-19T16:55:57","modified_gmt":"2024-09-19T08:55:57","slug":"ccxydgzyl","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/97980.html","title":{"rendered":"CSMA\/CA\u534f\u8bae\u7684\u5de5\u4f5c\u539f\u7406"},"content":{"rendered":"\n<p>\u3000\u3000<strong>CSMA\/CA(\u8f7d\u6ce2\u4fa6\u542c\u591a\u8def\u8bbf\u95ee\/\u51b2\u7a81\u907f\u514d)\u534f\u8bae<\/strong>\u662f\u4e00\u79cd\u7528\u4e8e\u65e0\u7ebf\u5c40\u57df\u7f51(\u5982Wi-Fi)\u4e2d\u7684\u5a92\u4f53\u8bbf\u95ee\u63a7\u5236\u673a\u5236\uff0c\u5176\u4e3b\u8981\u76ee\u7684\u662f\u5728\u591a\u4e2a\u8bbe\u5907\u5171\u4eab\u540c\u4e00\u4fe1\u9053\u65f6\u907f\u514d\u6570\u636e\u4f20\u8f93\u7684\u51b2\u7a81\u3002\u4ee5\u4e0b\u662fCSMA\/CA\u534f\u8bae\u7684\u5de5\u4f5c\u539f\u7406\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u5f53\u4e00\u4e2a\u8282\u70b9\u60f3\u8981\u53d1\u9001\u6570\u636e\u65f6\uff0c\u5b83\u9996\u5148\u4f1a\u68c0\u6d4b\u4fe1\u9053\u662f\u5426\u7a7a\u95f2\u3002\u5982\u679c\u4fe1\u9053\u7e41\u5fd9\uff0c\u8282\u70b9\u5c06\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4\u518d\u8fdb\u884c\u68c0\u6d4b\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5982\u679c\u4fe1\u9053\u7a7a\u95f2\uff0c\u8282\u70b9\u4e0d\u4f1a\u7acb\u5373\u53d1\u9001\u6570\u636e\uff0c\u800c\u662f\u4f1a\u7b49\u5f85\u4e00\u6bb5\u968f\u673a\u65f6\u95f4(\u79f0\u4e3a\u201c\u56de\u9000\u56e0\u5b50\u201d\u6216\u201cbackoff factor\u201d)\u3002\u8fd9\u4e2a\u7b49\u5f85\u65f6\u95f4\u662f\u901a\u8fc7\u4e00\u4e2a\u8ba1\u6570\u5668\u6765\u7ba1\u7406\u7684\uff0c\u8be5\u8ba1\u6570\u5668\u6839\u636e\u4e8c\u8fdb\u5236\u6307\u6570\u9000\u907f\u7b97\u6cd5\u8fdb\u884c\u66f4\u65b0\u3002\u5982\u679c\u5728\u8fd9\u6bb5\u65f6\u95f4\u5185\u4fe1\u9053\u4ecd\u7136\u7a7a\u95f2\uff0c\u5219\u8282\u70b9\u53ef\u4ee5\u5f00\u59cb\u53d1\u9001\u6570\u636e;\u5426\u5219\uff0c\u8ba1\u6570\u5668\u7ee7\u7eed\u589e\u52a0\u5e76\u91cd\u65b0\u5f00\u59cb\u7b49\u5f85\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4e3a\u4e86\u8fdb\u4e00\u6b65\u51cf\u5c11\u51b2\u7a81\u7684\u53ef\u80fd\u6027\uff0cCSMA\/CA\u8fd8\u4f7f\u7528\u4e86\u8bf7\u6c42\u53d1\u9001(RTS)\u548c\u6e05\u9664\u53d1\u9001(CTS)\u63a7\u5236\u5e27\u3002\u5f53\u4e00\u4e2a\u8282\u70b9\u9700\u8981\u53d1\u9001\u6570\u636e\u65f6\uff0c\u5b83\u4f1a\u5148\u53d1\u9001\u4e00\u4e2aRTS\u5e27\u7ed9\u76ee\u6807\u8282\u70b9\uff0c\u76ee\u6807\u8282\u70b9\u6536\u5230\u540e\u4f1a\u56de\u590d\u4e00\u4e2aCTS\u5e27\uff0c\u901a\u77e5\u6e90\u8282\u70b9\u4f55\u65f6\u53ef\u4ee5\u5f00\u59cb\u4f20\u8f93\u6570\u636e\u3002\u8fd9\u6837\uff0c\u5176\u4ed6\u53ef\u80fd\u7684\u5e72\u6270\u8005\u53ef\u4ee5\u77e5\u9053\u5f53\u524d\u4fe1\u9053\u88ab\u5360\u7528\u7684\u65f6\u95f4\uff0c\u5e76\u63a8\u8fdf\u81ea\u5df1\u7684\u4f20\u8f93\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6570\u636e\u4f20\u8f93\u5b8c\u6210\u540e\uff0c\u63a5\u6536\u65b9\u4f1a\u53d1\u9001\u4e00\u4e2a\u786e\u8ba4\u5e27(ACK)\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u5305\u6b63\u786e\u5230\u8fbe\u3002\u5982\u679c\u63a5\u6536\u65b9\u6ca1\u6709\u6536\u5230ACK\u6216\u8005\u6570\u636e\u5305\u672a\u80fd\u6b63\u786e\u63a5\u6536\uff0c\u5219\u8ba4\u4e3a\u53d1\u751f\u4e86\u51b2\u7a81\uff0c\u5e76\u4f1a\u91cd\u65b0\u53d1\u9001\u6570\u636e\u5305\u3002<\/p>\n\n\n\n<p>\u3000\u3000CSMA\/CA\u534f\u8bae\u901a\u8fc7\u5148\u68c0\u6d4b\u4fe1\u9053\u662f\u5426\u7a7a\u95f2\u3001\u968f\u673a\u9000\u907f\u4ee5\u53ca\u4f7f\u7528RTS\/CTS\u63e1\u624b\u7b49\u65b9\u6cd5\u6765\u5c3d\u91cf\u51cf\u5c11\u6570\u636e\u4f20\u8f93\u4e2d\u7684\u51b2\u7a81\uff0c\u4ece\u800c\u63d0\u9ad8\u65e0\u7ebf\u7f51\u7edc\u7684\u6548\u7387\u548c\u53ef\u9760\u6027.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 CSMA\/CA\u534f\u8bae\u4e2d\u7684\u4e8c\u8fdb\u5236\u6307\u6570\u9000\u907f\u7b97\u6cd5\u662f\u5982\u4f55\u5de5\u4f5c\u7684?<\/h2>\n\n\n\n<p>\u3000\u3000CSMA\/CA\u534f\u8bae\u4e2d\u7684\u4e8c\u8fdb\u5236\u6307\u6570\u9000\u907f\u7b97\u6cd5\u662f\u4e00\u79cd\u7528\u4e8e\u51cf\u5c11\u65e0\u7ebf\u7f51\u7edc\u4e2d\u51b2\u7a81\u91cd\u53d1\u6b21\u6570\u7684\u7b56\u7565\u3002\u5f53\u4e00\u4e2a\u8282\u70b9\u68c0\u6d4b\u5230\u4fe1\u9053\u7e41\u5fd9\u65f6\uff0c\u5b83\u4f1a\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4\u518d\u5c1d\u8bd5\u53d1\u9001\u6570\u636e\u3002\u8fd9\u4e2a\u7b49\u5f85\u65f6\u95f4\u662f\u901a\u8fc7\u4e00\u4e2a\u968f\u673a\u9009\u62e9\u7684\u8fc7\u7a0b\u786e\u5b9a\u7684\uff0c\u4ee5\u964d\u4f4e\u518d\u6b21\u53d1\u751f\u51b2\u7a81\u7684\u6982\u7387\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5177\u4f53\u6765\u8bf4\uff0c\u4e8c\u8fdb\u5236\u6307\u6570\u9000\u907f\u7b97\u6cd5\u91c7\u7528\u622a\u65ad\u7684\u65b9\u5f0f\uff0c\u5373\u5728\u6bcf\u6b21\u51b2\u7a81\u540e\uff0c\u8282\u70b9\u4f1a\u5728\u4e00\u4e2a\u9884\u5b9a\u4e49\u7684\u65f6\u95f4\u8303\u56f4\u5185(\u901a\u5e38\u662f0\u52302^i-1\u4e2a\u65f6\u9699\uff0c\u5176\u4e2di\u662f\u51b2\u7a81\u53d1\u751f\u7684\u6b21\u6570)\u968f\u673a\u9009\u62e9\u4e00\u4e2a\u9000\u907f\u65f6\u95f4\u3002\u8fd9\u79cd\u7b97\u6cd5\u786e\u4fdd\u4e86\u4e0d\u540c\u8282\u70b9\u5728\u51b2\u7a81\u540e\u9009\u62e9\u4e0d\u540c\u7684\u9000\u907f\u65f6\u95f4\uff0c\u4ece\u800c\u51cf\u5c11\u4e86\u518d\u6b21\u53d1\u751f\u51b2\u7a81\u7684\u53ef\u80fd\u6027\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u5b9e\u9645\u64cd\u4f5c\u4e2d\uff0c\u4e00\u65e6\u8282\u70b9\u68c0\u6d4b\u5230\u4fe1\u9053\u53d8\u4e3a\u7a7a\u95f2\uff0c\u5b83\u4f1a\u5ef6\u65f6IFS(\u5e27\u95f4\u95f4\u9694)\u65f6\u95f4\uff0c\u7136\u540e\u6309\u7167\u4e8c\u8fdb\u5236\u6307\u6570\u9000\u907f\u7b97\u6cd5\u5ef6\u65f6\u4e00\u6bb5\u65f6\u95f4\u3002\u53ea\u6709\u5728\u9000\u907f\u671f\u95f4\u4fe1\u9053\u4e00\u76f4\u4fdd\u6301\u7a7a\u95f2\u7684\u60c5\u51b5\u4e0b\uff0c\u8be5\u8282\u70b9\u624d\u80fd\u6210\u529f\u53d1\u9001\u6570\u636e\u3002\u5982\u679c\u5728\u9000\u907f\u65f6\u95f4\u5185\u4fe1\u9053\u518d\u6b21\u53d8\u5fd9\uff0c\u5219\u9700\u8981\u91cd\u65b0\u5f00\u59cb\u9000\u907f\u8fc7\u7a0b\uff0c\u76f4\u5230\u4fe1\u9053\u53d8\u4e3a\u7a7a\u95f2\u4e3a\u6b62\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6b64\u5916\uff0c\u4e3a\u4e86\u9632\u6b62\u8fde\u7eed\u51b2\u7a81\u7684\u53d1\u751f\uff0cCSMA\/CA\u534f\u8bae\u8fd8\u5f15\u5165\u4e86\u6700\u5927\u9000\u907f\u6b21\u6570\u7684\u6982\u5ff5\u3002\u5f53\u9000\u907f\u6b21\u6570\u8d85\u8fc7\u67d0\u4e2a\u6700\u5927\u503c\u65f6\uff0c\u8282\u70b9\u5c06\u505c\u6b62\u5c1d\u8bd5\u53d1\u9001\u6570\u636e\uff0c\u5e76\u53ef\u80fd\u8fdb\u5165\u4f11\u7720\u72b6\u6001\u6216\u91c7\u53d6\u5176\u4ed6\u63aa\u65bd\u6765\u907f\u514d\u8fdb\u4e00\u6b65\u7684\u51b2\u7a81\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 \u5728CSMA\/CA\u534f\u8bae\u4e2d\uff0cRTS\/CTS\u63e1\u624b\u8fc7\u7a0b\u7684\u5177\u4f53\u5b9e\u73b0\u7ec6\u8282\u662f\u4ec0\u4e48?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728CSMA\/CA\u534f\u8bae\u4e2d\uff0cRTS\/CTS\u63e1\u624b\u8fc7\u7a0b\u7684\u5177\u4f53\u5b9e\u73b0\u7ec6\u8282\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>RTS\u5e27\u7684\u53d1\u9001<\/strong>\uff1a\u5f53\u53d1\u9001\u7ad9(\u8282\u70b9A)\u9700\u8981\u5411\u63a5\u6536\u7ad9(\u8282\u70b9B)\u4f20\u8f93\u6570\u636e\u65f6\uff0c\u9996\u5148\u4f1a\u5e7f\u64ad\u4e00\u4e2aRTS(Request To Send)\u5e27\u3002\u8fd9\u4e2a\u5e27\u5305\u542b\u4e86\u76ee\u6807\u8282\u70b9B\u7684\u8eab\u4efd\u548c\u5b8c\u6210\u6570\u636e\u4f20\u8f93\u6240\u9700\u7684\u65f6\u95f4\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>CTS\u5e27\u7684\u56de\u590d<\/strong>\uff1a\u5982\u679c\u8282\u70b9B\u6536\u5230RTS\u5e27\uff0c\u5b83\u4f1a\u56de\u590d\u4e00\u4e2aCTS(Clear To Send)\u5e27\u3002\u8fd9\u4e2a\u5e27\u540c\u6837\u5305\u542b\u5b8c\u6210\u6570\u636e\u4f20\u8f93\u6240\u9700\u7684\u65f6\u95f4\u548c\u8282\u70b9A\u7684\u8eab\u4efd\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u7b49\u5f85SIFS\u65f6\u95f4<\/strong>\uff1a\u8282\u70b9A\u5728\u53d1\u9001RTS\u5e27\u540e\uff0c\u4f1a\u7b49\u5f85\u4e00\u4e2a\u77ed\u7684\u95f4\u9694\u65f6\u95f4(SIFS)\uff0c\u4ee5\u786e\u4fdd\u6ca1\u6709\u5176\u4ed6\u8282\u70b9\u540c\u65f6\u53d1\u9001\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u6570\u636e\u4f20\u8f93<\/strong>\uff1a\u5728\u6210\u529f\u4ea4\u6362RTS\/CTS\u4fe1\u53f7\u5bf9(\u5373\u5b8c\u6210\u63e1\u624b)\u540e\uff0c\u8282\u70b9A\u624d\u5f00\u59cb\u4f20\u8f93\u5b9e\u9645\u7684\u6570\u636e\u5305\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>ACK\u5e27\u7684\u53d1\u9001<\/strong>\uff1a\u8282\u70b9B\u5728\u6536\u5230\u6570\u636e\u5305\u540e\uff0c\u4f1a\u53d1\u9001\u4e00\u4e2aACK(Acknowledgment)\u5e27\u6765\u786e\u8ba4\u6570\u636e\u7684\u63a5\u6536\uff0c\u4ece\u800c\u5b8c\u6210\u6574\u4e2a\u6570\u636e\u5305\u4f20\u8f93\u534f\u8bae\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u90bb\u5c45\u8282\u70b9\u7684\u534f\u8c03<\/strong>\uff1a\u6240\u6709\u63a5\u6536\u4e86RTS\u6216CTS\u7684\u90bb\u5c45\u8282\u70b9\u90fd\u4f1a\u4fdd\u6301\u6c89\u9ed8\uff0c\u76f4\u5230\u6570\u636e\u4ea4\u6362\u5b8c\u6210\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u9690\u85cf\u7ec8\u7aef\u95ee\u9898\uff0c\u5373\u90a3\u4e9b\u672a\u88ab\u76f4\u63a5\u68c0\u6d4b\u5230\u7684\u8282\u70b9\u4e5f\u80fd\u901a\u8fc7\u534f\u8c03\u64cd\u4f5c\u6765\u907f\u514d\u78b0\u649e\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u968f\u673a\u9000\u907f\u673a\u5236<\/strong>\uff1a\u5982\u679c\u5728\u53d1\u9001RTS\u5e27\u65f6\u53d1\u751f\u78b0\u649e\uff0c\u8282\u70b9\u4f1a\u4f7f\u7528\u968f\u673a\u9000\u907f\u65f6\u9699\u503c\uff0c\u7b49\u5f85\u4e0b\u4e00\u6b21\u4ecb\u8d28\u7a7a\u95f2DIFS\u540e\u518d\u6b21\u5c1d\u8bd5\u53d1\u9001RTS\u5e27\uff0c\u76f4\u5230\u6210\u529f\u4e3a\u6b62\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u9690\u85cf\u7ec8\u7aef\u95ee\u9898\u7684\u89e3\u51b3<\/strong>\uff1aRTS\/CTS\u63e1\u624b\u673a\u5236\u901a\u8fc7\u786e\u8ba4\u8282\u70b9\u662f\u5426\u51c6\u5907\u597d\u63a5\u6536\u5e76\u6709\u65e0\u5e72\u6270\uff0c\u4ee5\u53ca\u901a\u77e5\u6240\u6709\u90bb\u8fd1\u8282\u70b9\u6570\u636e\u4ea4\u6362\u8fc7\u7a0b\uff0c\u4ece\u800c\u89e3\u51b3\u4e86\u9690\u85cf\u7ec8\u7aef\u95ee\u9898\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 CSMA\/CA\u534f\u8bae\u5982\u4f55\u5904\u7406\u9ad8\u5bc6\u5ea6\u65e0\u7ebf\u7f51\u7edc\u73af\u5883\u4e0b\u7684\u51b2\u7a81\u95ee\u9898?<\/h2>\n\n\n\n<p>\u3000\u3000CSMA\/CA\u534f\u8bae\u5728\u9ad8\u5bc6\u5ea6\u65e0\u7ebf\u7f51\u7edc\u73af\u5883\u4e0b\u5904\u7406\u51b2\u7a81\u95ee\u9898\u7684\u65b9\u5f0f\u4e3b\u8981\u901a\u8fc7\u8f7d\u6ce2\u76d1\u542c\u3001\u968f\u673a\u9000\u907f\u548c\u6570\u636e\u91cd\u4f20\u7b49\u673a\u5236\u6765\u5b9e\u73b0\u3002\u9996\u5148\uff0c\u6bcf\u4e2a\u8bbe\u5907\u5728\u53d1\u9001\u6570\u636e\u524d\u4f1a\u8fdb\u884c\u8f7d\u6ce2\u76d1\u542c\uff0c\u4ee5\u68c0\u6d4b\u5f53\u524d\u4fe1\u9053\u662f\u5426\u7a7a\u95f2\u3002\u5982\u679c\u4fe1\u9053\u7a7a\u95f2\uff0c\u8bbe\u5907\u5c06\u53d1\u9001\u4e00\u4e2a\u201c\u8bf7\u6c42\u53d1\u9001\u201d(RTS)\u5e27\uff0c\u901a\u77e5\u5176\u4ed6\u8bbe\u5907\u81ea\u5df1\u5373\u5c06\u53d1\u9001\u6570\u636e\u3002\u63a5\u6536\u65b9\u8bbe\u5907\u6536\u5230RTS\u5e27\u540e\uff0c\u4f1a\u53d1\u9001\u4e00\u4e2a\u201c\u6e05\u9664\u53d1\u9001\u201d(CTS)\u5e27\uff0c\u786e\u8ba4\u81ea\u5df1\u4e0d\u4f1a\u5728\u8fd9\u4e2a\u65f6\u95f4\u6bb5\u5185\u53d1\u9001\u6570\u636e\uff0c\u4ece\u800c\u907f\u514d\u51b2\u7a81\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u7136\u800c\uff0c\u5728\u9ad8\u5bc6\u5ea6\u7f51\u7edc\u73af\u5883\u4e2d\uff0c\u7531\u4e8e\u8bbe\u5907\u6570\u91cf\u4f17\u591a\uff0c\u8fd9\u79cd\u673a\u5236\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6548\u7387\u964d\u4f4e\uff0c\u56e0\u4e3a\u8bbe\u5907\u9700\u8981\u7b49\u5f85\u786e\u8ba4\u624d\u80fd\u53d1\u9001\u6570\u636e\uff0c\u8fd9\u88ab\u79f0\u4e3aRTS\/CTS\u673a\u5236\u3002\u5c3d\u7ba1\u5982\u6b64\uff0cCSMA\/CA\u534f\u8bae\u4ecd\u7136\u88ab\u8ba4\u4e3a\u662f\u9002\u5408\u9ad8\u5bc6\u5ea6\u7f51\u7edc\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u56e0\u4e3a\u5b83\u80fd\u591f\u66f4\u597d\u5730\u907f\u514d\u51b2\u7a81\uff0c\u63d0\u9ad8\u7f51\u7edc\u6027\u80fd\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 CSMA\/CA\u4e0e\u5176\u4ed6\u5a92\u4f53\u8bbf\u95ee\u63a7\u5236\u673a\u5236(\u5982CSMA\/CD)\u6709\u4f55\u4e0d\u540c\u548c\u4f18\u52bf?<\/h2>\n\n\n\n<p>\u3000\u3000CSMA\/CA(\u8f7d\u6ce2\u4fa6\u542c\u591a\u8def\u8bbf\u95ee\/\u51b2\u7a81\u907f\u514d)\u4e0eCSMA\/CD(\u8f7d\u6ce2\u4fa6\u542c\u591a\u8def\u8bbf\u95ee\/\u51b2\u7a81\u68c0\u6d4b)\u5728\u5a92\u4f53\u8bbf\u95ee\u63a7\u5236\u673a\u5236\u4e0a\u6709\u663e\u8457\u7684\u4e0d\u540c\u548c\u4f18\u52bf\u3002<\/p>\n\n\n\n<p>\u3000\u3000CSMA\/CA\u7684\u4e3b\u8981\u4f18\u52bf\u5728\u4e8e\u5176\u51b2\u7a81\u907f\u514d\u7b56\u7565\u3002\u5b83\u901a\u8fc7\u5728\u6570\u636e\u4f20\u8f93\u524d\u9884\u6d4b\u5e76\u907f\u514d\u51b2\u7a81\u7684\u53d1\u751f\uff0c\u800c\u4e0d\u662f\u50cfCSMA\/CD\u90a3\u6837\u5728\u51b2\u7a81\u53d1\u751f\u540e\u8fdb\u884c\u68c0\u6d4b\u548c\u5904\u7406\u3002\u8fd9\u79cd\u7b56\u7565\u4f7f\u5f97CSMA\/CA\u80fd\u591f\u51cf\u5c11\u7f51\u7edc\u4e2d\u7684\u51b2\u7a81\u6982\u7387\uff0c\u4ece\u800c\u63d0\u9ad8\u7f51\u7edc\u7684\u6548\u7387\u548c\u6027\u80fd\u3002\u6b64\u5916\uff0cCSMA\/CA\u901a\u5e38\u7528\u4e8e\u65e0\u7ebf\u7f51\u7edc\u4e2d\uff0c\u56e0\u4e3a\u5b83\u4e0d\u9700\u8981\u50cfCSMA\/CD\u90a3\u6837\u4f9d\u8d56\u4e8e\u6709\u7ebf\u7f51\u7edc\u4e2d\u7684\u78b0\u649e\u68c0\u6d4b\u6280\u672f\u3002<\/p>\n\n\n\n<p>\u3000\u3000CSMA\/CA\u9002\u7528\u4e8e\u5206\u5e03\u5f0f\u7f51\u7edc\uff0c\u6bcf\u4e2a\u8282\u70b9\u53ef\u4ee5\u72ec\u7acb\u51b3\u5b9a\u4f55\u65f6\u63a5\u5165\u4fe1\u9053\uff0c\u65e0\u9700\u7ef4\u6301\u548c\u52a8\u6001\u66f4\u65b0\u5468\u56f4\u76f8\u90bb\u8282\u70b9\u7684\u72b6\u6001\u4fe1\u606f\u3002\u8fd9\u4f7f\u5f97CSMA\/CA\u5728\u7f51\u7edc\u62d3\u6251\u53d8\u5316\u6216\u8282\u70b9\u6570\u91cf\u589e\u52a0\u65f6\u66f4\u52a0\u7075\u6d3b\u548c\u5065\u58ee\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u76f8\u6bd4\u4e4b\u4e0b\uff0cCSMA\/CD\u4e3b\u8981\u5e94\u7528\u4e8e\u6709\u7ebf\u7f51\u7edc\uff0c\u5176\u4f18\u70b9\u5305\u62ec\u7b97\u6cd5\u7b80\u5355\u3001\u63d0\u4f9b\u516c\u5e73\u7684\u8bbf\u95ee\u673a\u5236\u4ee5\u53ca\u5728\u957f\u5e27\u4f20\u9012\u548c\u8d1f\u8f7d\u8f83\u8f7b\u65f6\u5177\u6709\u8f83\u9ad8\u7684\u6548\u7387\u3002\u7136\u800c\uff0cCSMA\/CD\u9700\u8981\u8fdb\u884c\u51b2\u7a81\u68c0\u6d4b\uff0c\u5b58\u5728\u9519\u8bef\u5224\u5b9a\u7684\u95ee\u9898\uff0c\u5e76\u4e14\u5728\u7f51\u7edc\u8d1f\u8f7d\u8f83\u9ad8\u65f6\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8f83\u9ad8\u7684\u5ef6\u8fdf\u548c\u8f83\u4f4e\u7684\u541e\u5410\u91cf\u3002<\/p>\n\n\n\n<p>\u3000\u3000CSMA\/CA\u7684\u4f18\u52bf\u5728\u4e8e\u5176\u51b2\u7a81\u907f\u514d\u7b56\u7565\uff0c\u4f7f\u5176\u5728\u7f51\u7edc\u4e2d\u66f4\u6709\u6548\u7387\u5730\u51cf\u5c11\u51b2\u7a81\uff0c\u7279\u522b\u9002\u5408\u4e8e\u65e0\u7ebf\u7f51\u7edc\u73af\u5883;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e94\u3001 CSMA\/CA\u534f\u8bae\u5728\u73b0\u4ee3\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u4e2d\u7684\u5e94\u7528\u548c\u5c40\u9650\u6027\u662f\u4ec0\u4e48?<\/h2>\n\n\n\n<p>\u3000\u3000CSMA\/CA\u534f\u8bae\u5728\u73b0\u4ee3\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u4e2d\u7684\u5e94\u7528\u548c\u5c40\u9650\u6027\u53ef\u4ee5\u4ece\u591a\u4e2a\u65b9\u9762\u8fdb\u884c\u5206\u6790\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30001. \u5e94\u7528<\/h3>\n\n\n\n<p>\u3000\u3000CSMA\/CA\u534f\u8bae\u4e3b\u8981\u7528\u4e8e\u89e3\u51b3\u65e0\u7ebf\u5c40\u57df\u7f51(WLAN)\u4e2d\u7684\u51b2\u7a81\u95ee\u9898\u3002\u5b83\u901a\u8fc7\u76d1\u542c\u4fe1\u9053\u72b6\u6001\u6765\u907f\u514d\u6570\u636e\u4f20\u8f93\u65f6\u7684\u78b0\u649e\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u53ef\u9760\u6027\u548c\u6548\u7387\u3002\u4f8b\u5982\uff0c\u5728IEEE 802.11\u6807\u51c6\u4e2d\uff0cCSMA\/CA\u88ab\u7528\u6765\u786e\u4fdd\u53ea\u6709\u6388\u6743\u7684\u7ad9\u70b9\u624d\u80fd\u4f20\u8f93\u6570\u636e\uff0c\u4ee5\u51cf\u5c11\u51b2\u7a81\u7684\u53d1\u751f\u3002<\/p>\n\n\n\n<p>\u3000\u3000CSMA\/CA\u534f\u8bae\u80fd\u591f\u6709\u6548\u534f\u8c03\u65e0\u7ebf\u8d44\u6e90\u5171\u4eab\uff0c\u4f7f\u5f97\u591a\u4e2a\u8282\u70b9\u53ef\u4ee5\u540c\u65f6\u8bbf\u95ee\u603b\u7ebf\u4e0a\u7684\u8d44\u6e90\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u8d44\u6e90\u5229\u7528\u7387\u3002\u8fd9\u79cd\u673a\u5236\u7279\u522b\u9002\u7528\u4e8e\u9700\u8981\u9ad8\u5e76\u53d1\u8bbf\u95ee\u7684\u7f51\u7edc\u73af\u5883\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u65e0\u7ebf\u7f51\u7edc\u4e2d\uff0c\u9690\u85cf\u8282\u70b9\u95ee\u9898\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u6311\u6218\u3002CSMA\/CA\u534f\u8bae\u901a\u8fc7RTS\/CTS\u673a\u5236\u6765\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\uff0c\u5373\u5728\u53d1\u9001\u6570\u636e\u524d\u5148\u53d1\u9001\u4e00\u4e2a\u5305\u542b\u6301\u7eed\u65f6\u95f4\u4fe1\u606f\u7684RTS\u5e27\uff0c\u7136\u540e\u63a5\u6536\u65b9\u518d\u53d1\u9001\u4e00\u4e2a\u5305\u542b\u66f4\u77ed\u6301\u7eed\u65f6\u95f4\u4fe1\u606f\u7684CTS\u5e27\uff0c\u4ece\u800c\u8ba9\u6240\u6709\u76f8\u5173\u8282\u70b9\u4e86\u89e3\u5f53\u524d\u7684\u4fe1\u9053\u5360\u7528\u60c5\u51b5\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30002. 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