{"id":3270,"date":"2020-01-02T14:28:15","date_gmt":"2020-01-02T06:28:15","guid":{"rendered":"https:\/\/yanjingang.com\/blog\/?p=3270"},"modified":"2020-01-03T16:59:26","modified_gmt":"2020-01-03T08:59:26","slug":"%e8%93%9d%e7%89%99-%e5%8d%8f%e8%ae%ae%e5%88%86%e6%9e%90%e4%b9%8b%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5","status":"publish","type":"post","link":"https:\/\/yanjingang.com\/blog\/?p=3270","title":{"rendered":"\u84dd\u7259\u534f\u8bae\u5206\u6790\u2014\u57fa\u672c\u6982\u5ff5"},"content":{"rendered":"<h4>1. \u524d\u8a00<\/h4>\n<p>\u81ea1994\u5e74\u7531\u7231\u7acb\u4fe1\u63a8\u51fa\u81f3\u4eca\uff0c\u84dd\u7259\u6280\u672f\u5df2\u7ecf\u8d70\u8fc7\u4e8620\u4e2a\u5c81\u6708\u3002\u4ece\u6700\u521d\u7684Bluetooth V1.0\uff0c\u5230Bluetooth V4.0\uff08\u6700\u65b0\u7684\u4e3aV4.1\uff0c2013\u5e74\u5e95\u53d1\u5e03\uff09\uff0c\u7ecf\u5386\u4e86\u8fd19\u4e2a\u7248\u672c\u7684\u4fee\u8ba2\u540e\uff0c\u53d1\u5c55\u4e3a\u5f53\u524d\u7684\u72b6\u51b5\u3002<\/p>\n<p>\u8bf4\u5b9e\u8bdd\uff0c\u5982\u4eca\u7684\u84dd\u72594.1\uff0c\u7b80\u76f4\u662f\u4e00\u4e2a\u5927\u6742\u70e9\uff1aBR\/EDR\u6cbf\u7528\u65e7\u7684\u84dd\u7259\u89c4\u8303\uff1bLE\u6284\u88ad802.15.4\uff1bAMP\u76f4\u63a5\u4f7f\u7528802.11\u3002\u800c\u8fd9\u4e00\u5207\u7684\u76ee\u7684\uff0c\u5c31\u662f\u4ee5\u517c\u5bb9\u6027\u548c\u6613\u7528\u6027\u4e3a\u57fa\u7840\uff0c\u5728\u529f\u8017\u548c\u4f20\u8f93\u901f\u7387\u4e4b\u95f4\u5de6\u53f3\u4e3a\u96be\u3002\u8717\u8717\u4ee5\u4e3a\uff0c\u8fd9\u5e76\u4e0d\u662f\u4f18\u96c5\u7684\u8bbe\u8ba1\u3002<\/p>\n<p>\u4e0d\u8fc7\u6ca1\u5173\u7cfb\uff0c\u5b58\u5728\u5373\u5408\u7406\u3002\u56e0\u6b64\u8717\u8717\u5c31\u5f00\u51fa\u4e86\u8fd9\u6837\u4e00\u4e2a\u4e13\u9898\uff0c\u5e0c\u671b\u80fd\u591f\u5c06\u84dd\u7259\u6280\u672f\u4e0a\u4e0a\u4e0b\u4e0b\u7684\u77e5\u8bc6\uff0c\u6574\u7406\u51fa\u6765\uff0c\u4ee5\u4fbf\u5728\u52a0\u6df1\u81ea\u5df1\u5bf9\u84dd\u7259\u6280\u672f\u7684\u7406\u89e3\u7684\u540c\u65f6\uff0c\u80fd\u591f\u7ed9\u4ece\u4e8b\u84dd\u7259\u76f8\u5173\u5de5\u4f5c\u7684\u8bfb\u8005\u4e00\u70b9\u542f\u53d1\u3002<\/p>\n<p>\u672c\u6587\u662f\u8fd9\u4e2a\u4e13\u9898\u7684\u7b2c\u4e00\u7bc7\u6587\u7ae0\uff0c\u4e3b\u8981\u57fa\u4e8e\u84dd\u72594.1\u89c4\u8303\uff08<a href=\"https:\/\/www.bluetooth.org\/DocMan\/handlers\/DownloadDoc.ashx?doc_id=282159\" target=\"_blank\" rel=\"noopener noreferrer\">Core_V4.1.pdf<\/a>\uff09\uff0c\u63cf\u8ff0\u84dd\u7259\u6280\u672f\u7684\u57fa\u672c\u6982\u5ff5\u3002<\/p>\n<h4>2. \u84dd\u7259\u6280\u672f\u7684\u6982\u8ff0<\/h4>\n<h5>2.1 \u4e24\u79cd\u84dd\u7259\u6280\u672f\uff1aBasic Rate\uff08BR\uff09\u548cLow Energy\uff08LE\uff09<\/h5>\n<p>\u84dd\u7259\u534f\u8bae\u5305\u62ec\u4e24\u79cd\u6280\u672f\uff1aBasic Rate\uff08\u7b80\u79f0BR\uff09\u548cLow Energy\uff08\u7b80\u79f0LE\uff09\u3002\u8fd9\u4e24\u79cd\u6280\u672f\uff0c\u90fd\u5305\u62ec\u641c\u7d22\uff08discovery\uff09\u7ba1\u7406\u3001\u8fde\u63a5\uff08connection\uff09\u7ba1\u7406\u7b49\u673a\u5236\uff0c\u4f46<span style=\"color: #ff0000;\"><strong>\u5b83\u4eec\u662f\u4e0d\u80fd\u4e92\u901a\u7684<\/strong><\/span>\uff01\u8fd9\u4e5f\u662f\u8717\u8717\u62b1\u6028\u84dd\u7259\u534f\u8bae\u4e0d\u4f18\u96c5\u7684\u539f\u56e0\u4e4b\u4e00\u3002<\/p>\n<p>\u5382\u5546\u8981\u4e48\u5b9e\u73b0\u8fd9\u4e24\u79cd\u6280\u672f\u4e2d\u7684\u4e00\u79cd\uff0c\u8fd9\u65f6\u5c31\u53ea\u80fd\u548c\u540c\u6837\u5b9e\u73b0\u4e86\u8fd9\u4e2a\u6280\u672f\u7684\u8bbe\u5907\u4e92\u901a\uff0c\u800c\u4e0d\u80fd\u548c\u5b9e\u73b0\u53e6\u5916\u4e00\u79cd\u6280\u672f\u7684\u8bbe\u5907\u4e92\u901a\u3002\u5982\u679c\u5382\u5546\u8981\u786e\u4fdd\u80fd\u548c\u6240\u6709\u7684\u84dd\u7259\u8bbe\u5907\u4e92\u901a\uff0c\u90a3\u4e48\u5c31\u53ea\u80fd\u540c\u65f6\u5b9e\u73b0\u4e24\u79cd\u6280\u672f\uff0c\u800c\u4e0d\u53bb\u7ba1\u662f\u5426\u771f\u7684\u9700\u8981\uff0c\u8fd9\u6837\u5c31\u80fd\u78b0\u5230\u4ec0\u4e48\u4eba\u8bf4\u4ec0\u4e48\u8bdd\u4e86\uff01<\/p>\n<p><strong>2.1.1 Basic Rate(BR)<\/strong><\/p>\n<p>Basic Rate\u662f\u6b63\u5b97\u7684\u84dd\u7259\u6280\u672f\uff0c\u53ef\u4ee5\u5305\u62ec<span style=\"color: #0000ff;\"><strong>\u53ef\u9009\uff08optional\uff09<\/strong><\/span>\u7684EDR\uff08Enhanced Data Rate\uff09\u6280\u672f\uff0c\u4ee5\u53ca<span style=\"color: #0000ff;\"><strong>\u4ea4\u66ff\u4f7f\u7528\u7684\uff08Alternate\uff09<\/strong><\/span>\u7684MAC\uff08Media Access Control\uff09\u5c42\u548cPHY\u5c42\u6269\u5c55\uff08\u7b80\u79f0AMP\uff09\u3002\u8bf4\u7740\u771f\u62d7\u53e3\uff0c\u4e0d\u8fc7\u901a\u8fc7\u80cc\u540e\u7684\u5e94\u7528\u573a\u666f\uff0c\u5c31\u597d\u7406\u89e3\u4e86\uff1a<\/p>\n<blockquote><p>\u84dd\u7259\u8bde\u751f\u4e4b\u521d\uff0c\u4f7f\u7528\u7684\u662fBR\u6280\u672f\uff0c\u6b64\u65f6\u84dd\u7259\u7684\u7406\u8bba\u4f20\u8f93\u901f\u7387\uff0c\u53ea\u80fd\u8fbe\u5230721.2Kbps\u3002\u5728\u90a3\u4e2a\u5e74\u4ee3\uff0c56Kbps\u7684Modem\u5c31\u662f\u9ad8\u5927\u4e0a\u4e86\uff0c\u8fd9\u4e2a\u901f\u5ea6\u53ef\u4ee5\u8bf4\u662f\u60ca\u4e3a\u5929\u4eba\u4e86\u554a\uff01\u4f46\u662f\u79d1\u6280\u53d8\u5316\u592a\u5feb\u4e86\uff0cBR\u6280\u672f\u8f6c\u773c\u5c31\u8fc7\u65f6\u4e86\u3002\u90a3\u600e\u4e48\u529e\u5462\uff1f\u7f1d\u7f1d\u8865\u8865\u4e00\u4e0b\uff0c\u589e\u5f3a\u901f\u5ea6\u5457\uff0cEnhanced Data Rate\u5c31\u51fa\u73b0\u4e86\u3002<\/p>\n<p>\u4f7f\u7528EDR\u6280\u672f\u7684\u84dd\u7259\uff0c\u7406\u8bba\u901f\u7387\u53ef\u4ee5\u8fbe\u52302.1Mbps\u3002\u8fd9\u4e00\u6b21\u7684\u5347\u7ea7\u6362\u4ee3\uff0c\u8fd8\u7b97\u4f18\u96c5\uff0c\u56e0\u4e3a\u6ca1\u6709\u6539\u53d8\u4efb\u4f55\u7684\u786c\u4ef6\u67b6\u6784\u3001\u8f6f\u4ef6\u67b6\u6784\u548c\u4f7f\u7528\u65b9\u5f0f\u4e0a\u7684\u6539\u53d8\u3002<\/p>\n<p>\u4e5f\u8bb8\u4f60\u4e5f\u731c\u5230\u4e86\uff0cEDR\u53c8\u843d\u4f0d\u4e86\uff0c\u770b\u770b\u4eba\u5bb6WIFI\uff08WLAN\uff09\uff0c\u51e0\u5341Mbps\uff0c\u4e0a\u767eMbps\uff0c\u54b1\u4eec\u624d2.1Mbps\uff0c\u4e5f\u592a\u5bd2\u9178\u4e86\u5427\uff01\u90a3\u600e\u4e48\u529e\u5462\uff1f\u84dd\u7259\u7ec4\u7ec7\u60f3\u4e86\u4e2a\u574f\u4e3b\u610f\uff1a\u54ce\uff0cWIFI\uff01\u628a\u4f60\u7684\u7269\u7406\u5c42\u548cMAC\u5c42\u501f\u6211\u7528\u7528\u5457\uff01\u8fd9\u5c31\u662fAMP\uff08Alternate MAC and PHY layer extension\uff09\u3002\u827e\u739b\uff0c\u7ec8\u4e8e\u677e\u53e3\u6c14\u4e86\uff0c\u6211\u4eec\u53ef\u4ee5\u8fbe\u523054Mbps\u4e86\u3002<\/p>\n<p>\u4e0d\u8fc7\u5462\uff0c\u7531\u4e8e\u84dd\u7259\u81ea\u8eab\u7684\u7269\u7406\u5c42\u548cAMP\u6280\u672f\u5dee\u5f02\u592a\u660e\u663e\u4e86\uff0c\u8fd9\u6b21\u6269\u5c55\u53ea\u80fd\u662f\u4ea4\u66ff\u4f7f\u7528\uff08Alternate\uff09\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u6709\u6211\uff08BR\/EDR\uff09\u6ca1\u4f60\uff08AMP\uff09\u3002\u55ef\uff01\u4e0d\u4f18\u96c5\uff01<\/p>\n<p><span style=\"color: #0000ff;\">\u57cb\u4e2a\u95ee\u9898\uff1a\u53ea\u80fd\u4ea4\u66ff\u4f7f\u7528\uff0c\u90a3\u5b83\u4eec\u600e\u4e48\u5207\u6362\u5462\uff1f<\/span>\u8717\u8717\u4f1a\u5728\u540e\u7eed\u7684\u5185\u5bb9\u4e2d\uff0c\u6839\u636e\u4e3b\u6d41\u84dd\u7259\u82af\u7247\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u6765\u63a2\u8ba8\u4e00\u4e0b\u8be5\u95ee\u9898\u3002<\/p><\/blockquote>\n<p><span style=\"color: #ff0000;\">\u3010\u6ce81\uff1a\u7ec6\u5fc3\u7684\u8bfb\u8005\u53ef\u80fd\u4f1a\u6ce8\u610f\u5230\uff0c\u8fd9\u91cc\u7279\u522b\u5f3a\u8c03\u4e86optional\u548calternate\u8fd9\u4e24\u4e2a\u5b57\u773c\uff0c\u8fd9\u662f\u84dd\u7259Spec\u7684\u539f\u8bdd\u3002\u5b83\u610f\u5473\u7740\uff0cBR\u548cEDR\u662f\u53ef\u4ee5\u540c\u65f6\u5b58\u5728\u7684\uff0c\u4f46BR\/EDR\u548cAMP\u53ea\u80fd\u4e8c\u9009\u4e00\u3002\u3011<\/span><\/p>\n<p><strong>2.1.2 Low Energy\uff08LE\uff09<\/strong><\/p>\n<p>\u4e0a\u9762\u6240\u8bb2\u7684BR\u6280\u672f\u7684\u8fdb\u5316\u8def\u7ebf\uff0c\u5c31\u662f\u4f20\u8f93\u901f\u7387\u7684\u52a0\u5feb\u3001\u52a0\u5feb\u3001\u518d\u52a0\u5feb\u3002\u4f46\u80fd\u91cf\u662f\u5b88\u6052\u7684\uff0c\u4f60\u60f3\u4f20\u7684\u66f4\u5feb\uff0c\u4ee3\u4ef7\u5c31\u662f\u6d88\u8017\u66f4\u591a\u7684\u80fd\u91cf\u3002\u800c\u6709\u5f88\u591a\u7684\u5e94\u7528\u573a\u666f\uff0c\u5e76\u4e0d\u5173\u5fc3\u4f20\u8f93\u901f\u7387\uff0c\u53cd\u800c\u975e\u5e38\u5173\u5fc3\u529f\u8017\u3002\u8fd9\u5c31\u662fBluetooth LE\uff08\u79f0\u4f5c\u84dd\u7259\u4f4e\u529f\u8017\uff09\u4ea7\u751f\u7684\u80cc\u666f\u3002<\/p>\n<p>LE\u6280\u672f\u76f8\u6bd4BR\u6280\u672f\uff0c\u5dee\u5f02\u975e\u5e38\u5927\uff0c\u6216\u8005\u8bf4\u5c31\u662f\u4e24\u79cd\u4e0d\u540c\u7684\u6280\u672f\uff0c\u51d1\u5de7\u90fd\u52a0\u4e00\u4e2a\u201c\u84dd\u7259\u201d\u7684\u524d\u7f00\u800c\u5df2\u3002\u540e\u9762\u6211\u4eec\u4f1a\u8be6\u7ec6\u7684\u89e3\u91ca\u8fd9\u79cd\u5dee\u5f02\uff0c\u4ee5\u53caLE\u7684\u884c\u4e3a\u7279\u5f81\u3002<\/p>\n<h5>2.2 \u84dd\u7259\u7cfb\u7edf\u7684\u7ec4\u6210<\/h5>\n<p>\u84dd\u7259\u7cfb\u7edf\u7684\u7ec4\u6210\uff0c\u6d89\u53ca\u5230Bluetooth Application\u3001Bluetooth Core\u3001Bluetooth Host\u3001Bluetooth Controller\u7b49\u8bcd\u6c47\uff0c\u4e0d\u77e5\u9053\u662f\u56e0\u4e3a\u5bf9\u82f1\u6587\u7406\u89e3\u7684\u6b67\u4e49\uff0c\u8fd8\u662f\u56e0\u4e3a\u84dd\u7259\u89c4\u8303\u672c\u8eab\u5b9a\u4e49\u7684\u6b67\u4e49\uff0c\u8717\u8717\u7406\u89e3\u8fd9\u4e9b\u8bcd\u6c47\u65f6\u611f\u89c9\u6709\u70b9\u522b\u626d\u3002\u56e0\u6b64\u7279\u610f\u5728\u8fd9\u4e2a\u7ae0\u8282\u4e2d\uff0c\u5bf9\u76f8\u5173\u6982\u5ff5\u53ca\u5176\u80cc\u540e\u7684\u610f\u4e49\u8fdb\u884c\u8bf4\u660e\u3002<\/p>\n<p><a href=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2020\/01\/bl1.gif\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-3272\" src=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2020\/01\/bl1.gif\" alt=\"\" width=\"572\" height=\"410\" \/><\/a><\/p>\n<p>\u4e0a\u56fe\u63cf\u8ff0\u4e86\u84dd\u7259\u7cfb\u7edf\u7684\u7ec4\u6210\uff0c \u6211\u4eec\u9700\u8981\u6ce8\u610f\u5982\u4e0b\u7279\u70b9\uff1a<\/p>\n<blockquote><p>1\uff09\u56fe\u4e2d\u6240\u63cf\u8ff0\u7684\u84dd\u7259\u7cfb\u7edf\u7684\u7ec4\u6210\u90e8\u5206\uff0c\u5982Bluetooth Core\u548cBluetooth Application\uff0c\u5982Host\u548cController\uff0c\u90fd\u662f\u6307\u201c<span style=\"color: #0000ff;\"><strong>\u903b\u8f91\u5b9e\u4f53<\/strong>\u201d<\/span>\u3002\u6240\u8c13\u7684\u201c\u903b\u8f91\u5b9e\u4f53\u201d\uff0c\u9700\u8981\u548c\u65e5\u5e38\u751f\u6d3b\u4e2d\u7684\u201c\u7269\u7406\u5b9e\u4f53\u201d\u533a\u9694\u5f00\u3002\u5982\u5728\u505a\u7535\u8def\u8bbe\u8ba1\u65f6\uff0c\u4e00\u4e2a\u84dd\u7259\u82af\u7247\u3001\u4e00\u4e2a\u4e3b\u63a7CPU\uff0c\u5c31\u662f\u6307\u7269\u7406\u5b9e\u4f53\u3002\u800c\u84dd\u7259\u534f\u8bae\u6240\u63cf\u8ff0\u7684\u8fd9\u4e9b\u201c\u903b\u8f91\u5b9e\u4f53\u201d\uff0c\u4e0d\u4e00\u5b9a\u4f1a\u548c\u7269\u7406\u5b9e\u4f53\u4e00\u4e00\u5bf9\u5e94\uff0c\u5982\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0cHost\u548cBluetooth Application\u53ef\u80fd\u4f1a\u4f4d\u4e8e\u540c\u4e00\u4e2a\u7269\u7406\u5b9e\u4f53\u4e2d\uff08\u4e3b\u63a7CPU\uff09\uff0c\u800cController\u5355\u72ec\u4f4d\u4e8e\u53e6\u4e00\u4e2a\u7269\u7406\u5b9e\u4f53\u4e2d\uff08\u84dd\u7259\u82af\u7247\uff09\u3002<\/p>\n<p>2\uff09\u84dd\u7259\u534f\u8bae\u89c4\u5b9a\u4e86\u4e24\u4e2a\u5c42\u6b21\u7684\u534f\u8bae\uff0c\u5206\u522b\u4e3a\u84dd\u7259\u6838\u5fc3\u534f\u8bae\uff08Bluetooth Core\uff09\u548c\u84dd\u7259\u5e94\u7528\u5c42\u534f\u8bae\uff08Bluetooth Application\uff09\u3002\u84dd\u7259\u6838\u5fc3\u534f\u8bae\u5173\u6ce8\u5bf9\u84dd\u7259\u6838\u5fc3\u6280\u672f\u7684\u63cf\u8ff0\u548c\u89c4\u8303\uff0c\u5b83\u53ea\u63d0\u4f9b\u57fa\u7840\u7684\u673a\u5236\uff0c\u5e76\u4e0d\u5173\u5fc3\u5982\u4f55\u4f7f\u7528\u8fd9\u4e9b\u673a\u5236\uff1b\u84dd\u7259\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u662f\u5728\u84dd\u7259\u6838\u5fc3\u534f\u8bae\u7684\u57fa\u7840\u4e0a\uff0c\u6839\u636e\u5177\u4f53\u7684\u5e94\u7528\u9700\u6c42\uff0c\u767e\u82b1\u9f50\u653e\uff0c\u5b9a\u4e49\u51fa\u5404\u79cd\u5404\u6837\u7684\u7b56\u7565\uff0c\u5982FTP\u3001\u6587\u4ef6\u4f20\u8f93\u3001\u5c40\u57df\u7f51\u7b49\u7b49\u3002<\/p>\n<p>3\uff09Bluetooth Core\u7531\u4e24\u90e8\u5206\u7ec4\u6210\uff0cHost\u548cController\u3002\u8fd9\u4e24\u90e8\u5206\u5728\u4e0d\u540c\u7684\u84dd\u7259\u6280\u672f\u4e2d\uff08BR\/EDR\u3001AMP\u3001LE\uff09\uff0c\u627f\u62c5\u89d2\u8272\u7565\u6709\u4e0d\u540c\uff0c\u4f46\u5927\u81f4\u7684\u529f\u80fd\u662f\u76f8\u540c\u7684\u3002Controller\u8d1f\u8d23\u5b9a\u4e49RF\u3001Baseband\u7b49\u504f\u786c\u4ef6\u7684\u89c4\u8303\uff0c\u5e76\u5728\u8fd9\u4e4b\u4e0a\u62bd\u8c61\u51fa\u7528\u4e8e\u901a\u4fe1\u7684\u903b\u8f91\u94fe\u8def\uff08Logical Link\uff09\uff1bHost\u8d1f\u8d23\u5728\u903b\u8f91\u94fe\u8def\u7684\u57fa\u7840\u4e0a\uff0c\u8fdb\u884c\u66f4\u4e3a\u53cb\u597d\u7684\u5c01\u88c5\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5c4f\u853d\u6389\u84dd\u7259\u6280\u672f\u7684\u7ec6\u8282\uff0c\u8ba9Bluetooth Application\u66f4\u4e3a\u65b9\u4fbf\u7684\u4f7f\u7528\u3002<\/p>\n<p>4\uff09\u5728\u4e00\u4e2a\u7cfb\u7edf\u4e2d\uff0cHost\u53ea\u6709\u4e00\u4e2a\uff0c\u4f46Controller\u53ef\u4ee5\u4e00\u4e2a\uff0c\u4e5f\u53ef\u4ee5\u6709\u591a\u4e2a\u3002\u5982\uff1a\u5355\u72ec\u7684LE Controller\uff1b\u5355\u72ec\u7684BR\/EDR Controller\uff1b\u5355\u72ec\u7684LE+BR\/EDR Controller\uff1b\u5728\u5355\u72ec\u7684BR\/EDR Controller\u6216LE+BR\/EDR Controller\u57fa\u7840\u4e0a\uff0c\u589e\u52a0\u4e00\u4e2a\u6216\u591a\u4e2a\u989d\u5916\u7684AMP Controller\u3002<\/p>\n<p><span style=\"color: #ff0000;\">\u3010\u6ce82\uff1a\u6709\u5173Bluetooth Core\u7684\u8be6\u7ec6\u63cf\u8ff0\uff0c\u8717\u8717\u4f1a\u5728\u4e0b\u4e00\u7bc7\u6587\u7ae0\u4e2d\u63cf\u8ff0\uff0c\u672c\u6587\u5c31\u4e0d\u518d\u6df1\u5165\u4ecb\u7ecd\u4e86\u3002\u3011<\/span><\/p><\/blockquote>\n<p>3. BR\/EDR vs LE vs AMP<\/p>\n<p>\u6211\u4eec\u5148\u4ece\u4e0b\u9762\u56fe\u7247\u5bf9BR\/EDR\u3001AMP\u548cBLE\u4e09\u79cd\u6280\u672f\u6709\u4e9b\u66f4\u8fdb\u4e00\u6b65\u7684\u8ba4\u8bc6\uff08\u70b9\u51fb<a href=\"http:\/\/www.wowotech.net\/content\/uploadfile\/201406\/eaf01404028766.gif\" target=\"_blank\" rel=\"noopener noreferrer\">\u8fd9\u91cc<\/a>\u53ef\u4ee5\u67e5\u770b\u653e\u5927\u540e\u7684\u539f\u56fe\uff09\uff1a<\/p>\n<p><a href=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2020\/01\/bl2-1.gif\"><img loading=\"lazy\" class=\"alignnone wp-image-3273 size-large\" src=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2020\/01\/bl2-1-1024x766.gif\" alt=\"\" width=\"625\" height=\"468\" srcset=\"https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2020\/01\/bl2-1-1024x766.gif 1024w, https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2020\/01\/bl2-1-300x224.gif 300w, https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2020\/01\/bl2-1-768x574.gif 768w, https:\/\/yanjingang.com\/blog\/wp-content\/uploads\/2020\/01\/bl2-1-624x467.gif 624w\" sizes=\"(max-width: 625px) 100vw, 625px\" \/><\/a><\/p>\n<p>\u8be5\u56fe\u7247\u662f\u5bf9Bluetooth Core\u7684\u4e00\u4e2aOverview\uff0c\u4eceRF\u7684Physical Channel\uff0c\u5230Baseband\u7684Physical Link\u3001Logical Link\u3001LMP\u3001L2CAP\u7b49\u6982\u5ff5\uff0c\u90fd\u6709\u4e00\u4e9b\u7c97\u7565\u7684\u4ecb\u7ecd\u3002\u7531\u8be5\u56fe\u7247\u53ef\u4ee5\u770b\u51fa\uff0cBR\/EDR\u3001AMP\u3001BLE\u7b49\u6280\u672f\u6709\u5982\u4e0b\u7684\u7279\u70b9\uff1a<\/p>\n<blockquote dir=\"ltr\"><p>1\uff09BR\/EDR\u6280\u672f\uff0c\u8fc7\u4e8e\u4fa7\u91cd\u201c\u70b9\u5bf9\u70b9\u201d\u901a\u4fe1\uff0c\u4ee5\u81f3\u4e8e\u867d\u7136\u5728\u534f\u8bae\u7684\u5e95\u5c42\uff08\u5982Logical Link\uff09\u6709\u63d0\u53ca\u591a\u64ad\uff08Unidirectional\uff09\u548c\u5e7f\u64ad\uff08Broadcast\uff09\u7684\u6982\u5ff5\uff0c\u4f46\u5728\u4e0a\u5c42\u7684\u5e94\u7528\u573a\u666f\u4e2d\uff0c\u51e0\u4e4e\u4e0d\u5b58\u5728\uff08\u4e5f\u4e0d\u53ef\u80fd\u5b58\u5728\uff09\u76f8\u5e94\u7684\u5e94\u7528\u3002<\/p>\n<p>2\uff09\u4f46\u968f\u7740\u7269\u8054\u7f51\u7684\u53d1\u5c55\uff0c\u4e1a\u754c\u5bf9\u7b80\u5355\u7684\u3001\u4e0d\u9700\u8981\u8fde\u63a5\u7684\u591a\u64ad\u6216\u5e7f\u64ad\u901a\u4fe1\u7684\u9700\u6c42\u8d8a\u6765\u8d8a\u8feb\u5207\uff0c\u56e0\u6b64BLE\u6280\u672f\u5728RF\u548cBaseband\u7684\u534f\u8bae\u4e2d\uff0c\u5c31\u505a\u51fa\u4e86\u4fee\u6539\uff0c\u4ee5\u9002\u5e94\u8fd9\u79cd\u9700\u6c42\uff0c\u5373\uff1a\u4fee\u6539\u539f\u6709\u768479\u4e2achannel\u7684\u8df3\u9891\u65b9\u5f0f\uff0c\u5c06channel\u7684\u4e2a\u6570\u51cf\u5c11\u4e3a40\u4e2a\uff0c\u5e76\u4fdd\u7559\u4e86\u4e0d\u5c11\u4e8e3\u4e2a\u7684\u56fa\u5b9achannel\uff0c\u7528\u4e8e\u5e7f\u64ad\u901a\u4fe1\u3002\u4e3a\u4ec5\u4ec5\u5728\u5269\u4e0b\u768437\u4e2adata channel\u4e0a\u8df3\u9891\u3002<\/p>\n<p>3\uff09\u6b63\u56e0\u4e3a\u8fd9\u79cd\u6539\u53d8\uff0c\u539f\u6709\u7684\u641c\u7d22\/\u8fde\u63a5\/\u914d\u5bf9\u7b49\u6982\u5ff5\uff0c\u5728BLE\u4e0a\u5c31\u4e0d\u518d\u5b58\u5728\u4e86\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u662fAdvertisor\u3001Initiator\u7b49\u6982\u5ff5\u3002\u4f46\u5728\u4e4b\u540e\u7684\u6570\u636e\u901a\u4fe1\u7684\u5c42\u6b21\u4e0a\uff0c\u5c3d\u91cf\u4fdd\u6301\u4e86\u4e00\u81f4\u3002<\/p>\n<p>4\uff09\u5bf9\u4e8eAMP\u6765\u8bf4\uff0c\u662f\u57fa\u4e8eBR\/EDR\u7684controller\uff0c\u5728\u5b8c\u6210\u901a\u5e38\u7684\u70b9\u5bf9\u70b9\u8fde\u63a5\u4e4b\u540e\uff0c\u4e24\u4e2a\u84dd\u7259\u8bbe\u5907\u5546\u8bae\uff0c\u662f\u5426\u9700\u8981\u5c06\u540e\u7eed\u7684\u6570\u636e\u901a\u4fe1\uff0c\u8f6c\u79fb\u81f3AMP controller\u4e0a\u3002\u8fd9\u5c31\u662fBluetooth 3.0\u5f15\u5165\u7684AMP\u6280\u672f\u3002<\/p><\/blockquote>\n<p>\u6211\u4eec\u6682\u65f6\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\u5bf9\u84dd\u7259\u6280\u672f\u505a\u4e00\u4e2a\u611f\u6027\u8ba4\u8bc6\uff0c\u5728\u540e\u7eed\u7684\u6587\u7ae0\u4e2d\uff0c\u4f1a\u57fa\u4e8e\u5404\u4e2a\u5c42\u6b21\u7684\u534f\u8bae\uff0c\u4e00\u6b65\u4e00\u6b65\u5c55\u5f00\u3001\u63a8\u8fdb\uff0c\u4e89\u53d6\u80fd\u628a\u84dd\u7259\u6280\u672f\u5206\u6790\u900f\u5f7b\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><i>\u6458\u81ea\uff1ahttp:\/\/www.wowotech.net\/bluetooth\/bt_overview.html<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \u524d\u8a00 \u81ea1994\u5e74\u7531\u7231\u7acb\u4fe1\u63a8\u51fa\u81f3\u4eca\uff0c\u84dd\u7259\u6280\u672f\u5df2\u7ecf\u8d70\u8fc7\u4e8620\u4e2a\u5c81\u6708\u3002\u4ece\u6700\u521d\u7684Bluetooth V1.0\uff0c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[921],"tags":[919,920,916,918,917],"_links":{"self":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3270"}],"collection":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3270"}],"version-history":[{"count":0,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3270\/revisions"}],"wp:attachment":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}