{"id":645,"date":"2020-12-02T16:16:24","date_gmt":"2020-12-02T08:16:24","guid":{"rendered":"http:\/\/www.zhiweicl.com\/?p=645"},"modified":"2020-12-02T16:16:24","modified_gmt":"2020-12-02T08:16:24","slug":"5g-nr-%e9%9a%8f%e6%9c%ba%e6%8e%a5%e5%85%a5rach%e6%b5%81%e7%a8%8b%ef%bc%886%ef%bc%89-msg3-4%e4%b8%8econtention-resolution","status":"publish","type":"post","link":"http:\/\/www.zhiweicl.com\/?p=645","title":{"rendered":"5G NR \u968f\u673a\u63a5\u5165RACH\u6d41\u7a0b\uff086\uff09– Msg3\/4\u4e0eContention Resolution"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text]<\/p>\n

Msg3\u548cMsg4\u4e3b\u8981\u7528\u4e8e\u7ade\u4e89\u89e3\u51b3\uff08Contention Resolution\uff09\u3002\u968f\u673a\u63a5\u5165\u8fc7\u7a0b\u7684\u524d\u4e24\u6b65Msg1\u548cMsg2\u4e3b\u8981\u5b8c\u6210\u4e86\u4e0a\u884c\u7684\u65f6\u95f4\u540c\u6b65\uff1b\u800cMsg3\/Msg4\u7684\u4e3b\u8981\u76ee\u7684\u5176\u5b9e\u662f\u4e3aUE\u6307\u5b9a\u4e00\u4e2a\u552f\u4e00\u4e14\u5408\u6cd5\u7684\u8eab\u4efd\uff0cC-RNTI\uff0c\u7528\u4e8e\u540e\u9762\u7684\u6570\u636e\u4f20\u8f93\u3002\u672c\u6587\u8ba8\u8bba2\u4e2a\u95ee\u9898\uff1a1\uff09Msg3\/4\u7ade\u4e89\u89e3\u51b3\u539f\u7406<\/strong>\uff0c2\uff09Msg1\/2\/3\/4\u7684\u65f6\u5e8f\u56fe<\/strong><\/section>\n

Msg3\/4\u7684\u7ade\u4e89\u89e3\u51b3\u539f\u7406<\/h3>\n
\u4ece\u524d\u9762\u8ba8\u8bba\u7684Msg1\u548cMsg2\u6211\u4eec\u53ef\u4ee5\u77e5\u9053\uff0c\u5b58\u5728\u8fd9\u6837\u4e00\u79cd\u53ef\u80fd\u6027\uff0c\u5373\u591a\u4e2aUE\u53ef\u80fd\u5728\u540c\u4e00\u4e2aRACH Occasion(\u76f8\u540c\u7684\u65f6\u9891\u8d44\u6e90)\u4e0a\u4f7f\u7528\u76f8\u540c\u7684PRACH Preamble\u53d1\u9001Msg1\uff0c\u8fd9\u6837\u7684\u8bddMsg2\u4e2d\u7684TC-RNTI\u5c31\u6709\u53ef\u80fd\u88ab\u591a\u4e2aUE\u4f7f\u7528\uff0c\u6240\u4ee5\u9700\u8981Msg3\/4\u8fdb\u4e00\u6b65\u533a\u5206UE\uff0c\u4e3aUE\u6307\u5b9a\u660e\u786e\u7684C-RNTI\uff0c\u907f\u514d\u51b2\u7a81\u3002<\/section>\n

\u4e0d\u8fc7\u8fd9\u4e2aMsg3\/4\u7ade\u4e89\u89e3\u51b3\u673a\u5236\u6839\u636eUE\u662f\u5426\u5df2\u7ecf\u62e5\u6709\u5408\u6cd5\u7684C-RNTI\u5206\u4e3a\u4e24\u79cd\u60c5\u51b5\uff1a\uff08\u672c\u6587\u53ea\u8bb2\u8fd9\u4e24\u79cd\u60c5\u51b5\u7684\u539f\u7406\uff0c\u4e0b\u4e00\u7bc7\u535a\u6587\u4f1a\u603b\u7ed3\u5176\u5e94\u7528\u573a\u666f\uff09<\/p>\n

    \n
  • UE\u5df2\u7ecf\u62e5\u6709\u4e86\u5408\u6cd5\u7684C-RNTI<\/strong>\uff1aUE\u5728Msg3\u4e0a\u53d1\u9001C-RNTI MAC CE\u3002\u7136\u540e\u4f7f\u7528C-RNTI\u53ef\u4ee5\u6210\u529f\u89e3\u51faMsg4\u7684PDCCH\uff0c\u5c31\u4f1a\u8ba4\u4e3a\u968f\u673a\u63a5\u5165\u6210\u529f\u3002\u56e0\u4e3aC-RNTI\u662fUE specific\u7684\uff0c\u522b\u7684UE\uff08\u65e0\u8fd9\u4e2aC-RNTI\uff09\u65e0\u6cd5\u6b63\u786e\u89e3\u51fa\u8fd9\u4e2aPDCCH\u3002<\/li>\n<\/ul>\n

    [\/vc_column_text]