{"id":98730,"date":"2024-11-01T15:52:30","date_gmt":"2024-11-01T07:52:30","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=98730"},"modified":"2024-11-01T15:52:34","modified_gmt":"2024-11-01T07:52:34","slug":"zjsdxytx","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/98730.html","title":{"rendered":"ZigBee\u6280\u672f\u7684\u534f\u8bae\u4f53\u7cfb"},"content":{"rendered":"\n<p>\u3000\u3000<strong>ZigBee\u6280\u672f<\/strong>\u7684\u534f\u8bae\u4f53\u7cfb\u662f\u4e00\u4e2a\u591a\u5c42\u6b21\u7684\u7ed3\u6784\uff0c\u4e3b\u8981\u7531\u4ee5\u4e0b\u51e0\u4e2a\u5c42\u6b21\u7ec4\u6210\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u7269\u7406\u5c42\uff08Physical Layer, PHY\uff09<\/strong>&nbsp;\uff1a\u8d1f\u8d23\u65e0\u7ebf\u4fe1\u53f7\u7684\u4f20\u8f93\uff0c\u5305\u62ec\u542f\u52a8\u548c\u5173\u95ed\u65e0\u7ebf\u6536\u53d1\u5668\u3001\u4fe1\u9053\u9009\u62e9\u4e0e\u8bc4\u4f30\u3001\u6570\u636e\u5305\u7684\u4f20\u8f93\u4e0e\u63a5\u6536\u7b49\u529f\u80fd\u3002\u5168\u7403\u4f7f\u7528\u7684\u9891\u7387\u5e26\u4e3a2.4 GHz\uff0c\u6b27\u76df\u4e3a868 MHz\uff0c\u7f8e\u56fd\u4e3a915 MHz\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u5a92\u4f53\u8bbf\u95ee\u63a7\u5236\u5c42\uff08Medium Access Control Layer, MAC\uff09<\/strong>&nbsp;\uff1a\u8d1f\u8d23\u534f\u8c03\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u5305\u62ec\u4fe1\u6807\u7ba1\u7406\u3001\u4fe1\u9053\u63a5\u5165\u3001\u65f6\u9699\u7ba1\u7406\u3001\u5e27\u9a8c\u8bc1\u4e0e\u786e\u8ba4\u3001\u5173\u8054\u4e0e\u65ad\u5f00\u7b49\u529f\u80fd\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u7f51\u7edc\u5c42\uff08Network Layer, NWK\uff09<\/strong>&nbsp;\uff1a\u57fa\u4e8eIEEE 802.15.4\u7684MAC\u5c42\u6784\u5efa\uff0c\u63d0\u4f9b\u7279\u5b9a\u4e8e\u62d3\u6251\u7684\u8def\u7531\u3001\u5b89\u5168\u3001\u65b0\u8bbe\u5907\u914d\u7f6e\u3001\u7f51\u7edc\u542f\u52a8\u3001\u52a0\u5165\/\u79bb\u5f00\u7f51\u7edc\u3001\u5bfb\u5740\u3001\u90bb\u5c45\u53d1\u73b0\u548c\u8def\u7531\u53d1\u73b0\u7b49\u529f\u80fd\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u5e94\u7528\u5c42\uff08Application Layer, APL\uff09<\/strong>&nbsp;\uff1a\u63d0\u4f9b\u5e94\u7528\u6846\u67b6\u6a21\u578b\uff0c\u5982\u5b89\u5168\u5c5e\u6027\u8bbe\u7f6e\u548c\u4e1a\u52a1\u6570\u636e\u6d41\u6c47\u805a;\u4e3a\u5e94\u7528\u63d0\u4f9b\u901a\u4fe1\u7ec8\u7aef\u70b9;\u53d1\u73b0\u8bbe\u5907\u548c\u5e94\u7528\u670d\u52a1\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000\u6b64\u5916\uff0cZigBee\u534f\u8bae\u8fd8\u5305\u62ec\u4e00\u4e2a\u5b89\u5168\u5c42\uff0c\u4e3b\u8981\u7528\u4e8eZigBee\u7f51\u7edc\u7684\u7ec4\u7f51\u8fde\u63a5\u3001\u6570\u636e\u7ba1\u7406\u548c\u7f51\u7edc\u5b89\u5168\u7b49\u3002\u8fd9\u4e9b\u5c42\u6b21\u5171\u540c\u6784\u6210\u4e86\u5b8c\u6574\u7684ZigBee\u534f\u8bae\u6808\uff0c\u6bcf\u4e00\u5c42\u90fd\u4e3a\u5176\u4e0a\u4e00\u5c42\u63d0\u4f9b\u7279\u5b9a\u7684\u670d\u52a1\uff0c\u5e76\u901a\u8fc7\u670d\u52a1\u63a5\u5165\u70b9(Service Access Point, SAP)\u4e0e\u4e0a\u5c42\u4ea4\u4e92\u3002<\/p>\n\n\n\n<p>\u3000\u3000ZigBee\u534f\u8bae\u4f53\u7cfb\u7ed3\u6784\u57fa\u4e8eIEEE 802.15.4\u6807\u51c6\uff0c\u5b9a\u4e49\u4e86\u7269\u7406\u5c42\u548cMAC\u5c42\uff0c\u800c\u7f51\u7edc\u5c42\u548c\u5e94\u7528\u5c42\u5219\u7531ZigBee\u8054\u76df\u5236\u5b9a\u3002\u8fd9\u79cd\u5206\u5c42\u7ed3\u6784\u4f7f\u5f97ZigBee\u534f\u8bae\u5177\u6709\u826f\u597d\u7684\u6269\u5c55\u6027\u548c\u7075\u6d3b\u6027\uff0c\u9002\u7528\u4e8e\u4f4e\u529f\u8017\u3001\u4f4e\u901f\u7387\u548c\u77ed\u8ddd\u79bb\u7684\u65e0\u7ebf\u901a\u4fe1\u573a\u666f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 ZigBee\u6280\u672f\u7684\u7269\u7406\u5c42(PHY)\u5728\u4e0d\u540c\u56fd\u5bb6\/\u5730\u533a\u7684\u9891\u7387\u5e26\u5206\u914d\u662f\u5982\u4f55\u7684?<\/h2>\n\n\n\n<p>\u3000\u3000ZigBee\u6280\u672f\u7684\u7269\u7406\u5c42(PHY)\u5728\u4e0d\u540c\u56fd\u5bb6\/\u5730\u533a\u7684\u9891\u7387\u5e26\u5206\u914d\u5982\u4e0b\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30001.&nbsp;<strong>\u4f4e\u9891\u6bb5\uff08868\/915 MHz\uff09<\/strong>\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000\u6b27\u6d32\u4f7f\u7528868 MHz\u9891\u6bb5\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u7f8e\u56fd\u548c\u6fb3\u5927\u5229\u4e9a\u7b49\u56fd\u5bb6\u4f7f\u7528915 MHz\u9891\u6bb5\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30002.&nbsp;<strong>\u9ad8\u9891\u6bb5\uff082.4 GHz\uff09<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u8fd9\u4e2a\u9891\u6bb5\u5728\u5168\u7403\u8303\u56f4\u5185\u51e0\u4e4e\u901a\u7528\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6b64\u5916\uff0c\u8fd8\u6709\u4e00\u4e9b\u7279\u5b9a\u56fd\u5bb6\/\u5730\u533a\u4f7f\u7528\u7684\u5176\u4ed6\u9891\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000\u65e5\u672c\u4f7f\u7528950-956 MHz\u9891\u6bb5\u3002<\/li>\n\n\n\n<li>\u3000\u3000\u4e2d\u56fd\u4f7f\u7528779-787 MHz\u9891\u6bb5\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 ZigBee\u5a92\u4f53\u8bbf\u95ee\u63a7\u5236\u5c42(MAC)\u7684\u5177\u4f53\u4fe1\u9053\u63a5\u5165\u548c\u65f6\u9699\u7ba1\u7406\u673a\u5236\u662f\u4ec0\u4e48?<\/h2>\n\n\n\n<p>\u3000\u3000ZigBee\u5a92\u4f53\u8bbf\u95ee\u63a7\u5236\u5c42(MAC)\u7684\u5177\u4f53\u4fe1\u9053\u63a5\u5165\u548c\u65f6\u9699\u7ba1\u7406\u673a\u5236\u4e3b\u8981\u57fa\u4e8eIEEE 802.15.4\u6807\u51c6\u3002\u6211\u4eec\u53ef\u4ee5\u8be6\u7ec6\u63cf\u8ff0\u5176\u673a\u5236\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30001.&nbsp;<strong>\u4fe1\u9053\u63a5\u5165\u673a\u5236<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000ZigBee MAC\u5c42\u91c7\u7528\u514d\u51b2\u7a81\u8f7d\u6ce2\u68c0\u6d4b\u591a\u8def\u8bbf\u95ee(CSMA-CA)\u673a\u5236\u8fdb\u884c\u4fe1\u9053\u63a5\u5165\u3002\u8fd9\u79cd\u673a\u5236\u5141\u8bb8\u8bbe\u5907\u5728\u53d1\u9001\u6570\u636e\u524d\u76d1\u542c\u4fe1\u9053\uff0c\u4ee5\u907f\u514d\u5e72\u6270\u548c\u51b2\u7a81\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u975e\u4fe1\u6807\u7f51\u7edc\u4e2d\uff0c\u8bbe\u5907\u4f7f\u7528\u6807\u51c6\u7684ALOHA CSMA-CA\u901a\u4fe1\u65b9\u5f0f\uff0c\u6210\u529f\u63a5\u6536\u6570\u636e\u5305\u65f6\u8fdb\u884c\u6b63\u5411\u786e\u8ba4\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u4fe1\u6807\u542f\u7528\u7684\u7f51\u7edc\u4e2d\uff0c\u534f\u8c03\u5668\u5728\u9884\u8bbe\u95f4\u9694\u8bbe\u7f6e\u4fe1\u6807\uff0c\u6bcf\u4e2a\u4fe1\u6807\u4e4b\u95f4\u670916\u4e2a\u7b49\u5bbd\u7684\u65f6\u95f4\u69fd\uff0c\u6bcf\u4e2a\u65f6\u95f4\u69fd\u5185\u7684\u4fe1\u9053\u8bbf\u95ee\u65e0\u7ade\u4e89\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30002.&nbsp;<strong>\u65f6\u9699\u7ba1\u7406\u673a\u5236<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u8d85\u5e27\u7ed3\u6784\u7531\u7f51\u7edc\u4fe1\u6807\u5305\u56f4\uff0c\u5206\u4e3a16\u4e2a\u7b49\u957f\u65f6\u9699\u3002\u6bcf\u4e2a\u8d85\u5e27\u7684\u7b2c\u4e00\u65f6\u9699\u7528\u4e8e\u4f20\u8f93\u4fe1\u6807\u5e27\uff0c\u540e\u976215\u4e2a\u65f6\u9699\u662f\u7ade\u4e89\u63a5\u5165\u671f(CAP)\uff0c\u8fd916\u4e2a\u65f6\u9699\u7ec4\u6210\u8d85\u5e27\u7ed3\u6784\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6d3b\u52a8\u90e8\u5206\u5305\u62ec\u7ade\u4e89\u8bbf\u95ee\u671f(CAP)\u548c\u65e0\u7ade\u4e89\u671f(CFP)\u3002\u4efb\u4f55\u5e0c\u671b\u5728CAP\u4e2d\u901a\u4fe1\u7684\u8bbe\u5907\u90fd\u5fc5\u987b\u4f7f\u7528\u5206\u69fdCSMA-CA\u673a\u5236\u4e0e\u5176\u4ed6\u8bbe\u5907\u7ade\u4e89\u3002\u53e6\u4e00\u65b9\u9762\uff0cCFP\u5305\u542b\u4fdd\u8bc1\u65f6\u95f4\u69fd(GTS)\uff0c\u59cb\u7ec8\u51fa\u73b0\u5728\u6d3b\u52a8\u8d85\u5e27\u672b\u5c3e\uff0c\u4eceCAP\u540e\u7acb\u5373\u5f00\u59cb\u7684\u69fd\u8fb9\u754c\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u8d85\u5e27\u53ef\u4ee5\u6709\u6d3b\u52a8\u548c\u975e\u6d3b\u52a8\u90e8\u5206\u3002\u5728\u975e\u6d3b\u52a8\u90e8\u5206\uff0c\u534f\u8c03\u5668\u4e0d\u5e94\u4e0e\u5176PAN\u4ea4\u4e92\u5e76\u53ef\u80fd\u8fdb\u5165\u4f4e\u529f\u8017\u6a21\u5f0f\u3002\u6d3b\u52a8\u90e8\u5206\u7531\u591a\u4e2a\u7b49\u8ddd\u65f6\u9699\u7ec4\u6210\uff0c\u6bcf\u4e2a\u65f6\u9699\u6301\u7eed2^SO * aBaseSlotDuration\u3002<\/p>\n\n\n\n<p>\u3000\u3000ZigBee MAC\u5c42\u901a\u8fc7CSMA-CA\u673a\u5236\u5b9e\u73b0\u4fe1\u9053\u63a5\u5165\uff0c\u5e76\u901a\u8fc7\u8d85\u5e27\u7ed3\u6784\u548c\u65f6\u9699\u7ba1\u7406\u673a\u5236\u6765\u6709\u6548\u7ba1\u7406\u65f6\u9699\u5206\u914d\u548c\u901a\u4fe1\u4e8b\u52a1\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 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class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 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