{"id":2883,"date":"2022-04-18T14:16:15","date_gmt":"2022-04-18T06:16:15","guid":{"rendered":"https:\/\/aif.amtbbs.org\/?p=2883"},"modified":"2022-04-18T14:16:15","modified_gmt":"2022-04-18T06:16:15","slug":"%e4%b8%80%e6%96%87%e4%ba%86%e8%a7%a35g-nr%e4%b8%8b%e8%a1%8c%e9%93%be%e8%b7%af%e6%95%b0%e6%8d%ae%e4%bc%a0%e8%be%93%e8%bf%87%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/aif.amtbbs.org\/index.php\/2022\/04\/18\/2883\/","title":{"rendered":"\u4e00\u6587\u4e86\u89e35G NR\u4e0b\u884c\u94fe\u8def\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b"},"content":{"rendered":"

NR \u4e0b\u884c\u94fe\u8def\u6570\u636e\u4f20\u8f93\u5173\u4e8e\u5c06\u7528\u6237\u6570\u636e\u8f6c\u6362\u6210PDSCH\u6570\u636e\u5e76\u901a\u8fc7\u6bcf\u4e2a\u4f20\u8f93\u5929\u7ebf\u8fdb\u884c\u4f20\u8f93\u7684\u8fc7\u7a0b\u3002\u8fd9\u662fNR\u4e2d\u6700\u590d\u6742\u7684\u8fc7\u7a0b\u4e4b\u4e00,\u6d89\u53ca\u7684\u56e0\u7d20\u5f88\u591a\u3002\u4ee5\u4e0b\u662f\u6d89\u53ca\u5230\u8fd9\u4e2a\u8fc7\u7a0b\u7684\u56e0\u7d20\u3002\u5173\u952e(\u6838\u5fc3\u90e8\u5206)\u662f\u4f20\u8f93\u8fc7\u7a0b,DCI\u548cRRC\u4e3a\u4f20\u8f93\u8fc7\u7a0b\u63d0\u4f9b(\u914d\u7f6e)\u4e00\u4e9b\u53c2\u6570\u3002<\/p>\n

\u5728LTE\u4e2d,\u5927\u90e8\u5206\u4f20\u8f93\u53c2\u6570\u662f\u56fa\u5b9a\u7684\u6216\u7531\u4f20\u8f93\u8fc7\u7a0b\u7b97\u6cd5\u81ea\u52a8\u786e\u5b9a\u7684,DCI\u53ea\u914d\u7f6e\u4e86\u5c11\u91cf\u7684\u53c2\u6570,RRC\u6d88\u606f\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u5f71\u54cd\u4e0d\u5927\u3002\u7136\u800c,\u5728NR\u4e2d,\u8bb8\u591a\u4f20\u8f93\u6d41\u7a0b\u53c2\u6570\u4e0d\u4ec5\u7531DCI\u63d0\u4f9b(\u914d\u7f6e),\u800c\u4e14\u8fd8\u7531RRC\u6d88\u606f\u63d0\u4f9b,\u8fd9\u610f\u5473\u7740\u6d41\u7a0b\u5c06\u53d8\u5f97\u66f4\u52a0\u7075\u6d3b,\u4f46\u5bf9\u6d41\u7a0b\u8fdb\u884c\u6545\u969c\u6392\u9664\u5c06\u53d8\u5f97\u66f4\u52a0\u56f0\u96be\u3002<\/p>\n

\u5176\u4e2d,PDSCH:Physic Downlink Shared Chanel,\u4e3b\u8981\u7528\u4e8e\u627f\u8f7d\u4e0b\u884c\u4e1a\u52a1\u6570\u636e\u548c\u5bfb\u547c\u6d88\u606f\u3002<\/p>\n

DCI:Downlink Control Information,\u63a7\u5236\u4fe1\u606f\u96c6\u5408,\u8fd9\u4e9b\u4fe1\u606f\u7528\u4e8e\u8c03\u5ea6\u4e0b\u884c\u6570\u636e\u4e0b\u884c\u4fe1\u9053(\u5982PDSCH)\u6216\u4e0a\u884c\u6570\u636e\u4fe1\u9053(\u5982,PUSCH)\u3002<\/p>\n

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\u4e0b\u9762\u603b\u7ed3\u4e00\u4e0bPDSCH\u4f20\u8f93\u5904\u7406\u8fc7\u7a0b\u3002<\/p>\n

PDSCH\u4f20\u8f93\u8fc7\u7a0b\u4e3b\u8981\u4e3a:<\/p>\n

l \u00a0\u4f20\u8f93\u5757(TB)CRC\u9644\u7740<\/p>\n

l \u00a0LDPC\u57fa\u56fe\u9009\u62e9<\/p>\n

l \u00a0\u7801\u5757(CB)\u5206\u6bb5\u4e0e\u7801\u5757CRC\u9644\u7740<\/p>\n

l \u00a0\u4fe1\u9053\u7f16\u7801<\/p>\n

l \u00a0\u901f\u7387\u5339\u914d<\/p>\n

l \u00a0\u7801\u5757\u8fde\u63a5<\/p>\n

l \u00a0\u52a0\u6270<\/p>\n

l \u00a0\u8c03\u5236<\/p>\n

l \u00a0\u5c42\u6620\u5c04<\/p>\n

l \u00a0\u5929\u7ebf\u7aef\u53e3\u6620\u5c04<\/p>\n

l \u00a0\u6620\u5c04\u5230\u865a\u62df\u8d44\u6e90\u5757(VRB)<\/p>\n

l \u00a0\u865a\u62df\u8d44\u6e90\u5757\u6620\u5c04\u5230\u7269\u7406\u8d44\u6e90\u5757<\/p>\n

\u7528\u4e00\u5f20\u56fe\u6765\u8868\u793a\u6b64\u8fc7\u7a0b:<\/p>\n

<\/p>\n

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\u5177\u4f53\u5224\u65ad,\u5982\u4e0b\u56fe\u6240\u793a:<\/p>\n

<\/p>\n

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\u8fd9\u91cc,CRC24\u662fCRC24A,\u5177\u4f53\u4e3a:<\/p>\n

<\/p>\n

CRC16\u591a\u9879\u5f0f,\u5177\u4f53\u4e3a:<\/p>\n

<\/p>\n

\u5173\u4e8eCRC\u6821\u9a8c\u7684\u539f\u7406\u548c\u7b97\u6cd5,\u5728\u8fd9\u91cc\u5c31\u4e0d\u518d\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/p>\n

LDPC\u57fa\u56fe\u9009\u62e9<\/p>\n

\u5728NR \u4e2d,\u4e1a\u52a1\u4fe1\u9053\u91c7\u7528\u4e86LDPC\u7f16\u7801\u65b9\u5f0f\u3002\u6839\u636eA\u7684\u5927\u5c0f\u548c\u7801\u7387\u8fdb\u884c\u9009\u62e9,\u5177\u4f53\u5982\u4e0b\u56fe\u3002<\/p>\n

<\/p>\n

\u5982\u679c\u5c06\u8fd9\u4e2a\u533a\u57df\u5728\u5750\u6807\u4e2d\u8868\u793a\u51fa\u6765,\u4e8e\u662f\u5f97\u5230\u4e86\u4e0b\u56fe\u3002<\/p>\n

<\/p>\n

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\u7801\u5757\u5206\u6bb5\u4e0e\u7801\u5757CRC\u9644\u7740<\/p>\n

<\/p>\n

i)\u786e\u5b9a\u7801\u5757\u7684\u6700\u5927\u503cKcb<\/p>\n

\u7801\u5757\u7684\u6700\u5927\u503c\u53d6\u51b3\u4e8eLDPC\u57fa\u56fe\u7c7b\u578b:<\/p>\n

l \u00a0\u5bf9\u4e8eLDPC\u57fa\u56fe1:Kcb=84448<\/p>\n

l \u00a0\u5bf9\u4e8eLDPC\u57fa\u56fe2:Kcb=3840<\/p>\n

ii)\u786e\u5b9a\u7801\u5757\u6570\u76ee<\/p>\n

\u5224\u65ad\u65b9\u6cd5\u5982\u4e0b:<\/p>\n

<\/p>\n

iii)\u786e\u5b9a\u6bcf\u4e2a\u7801\u5757\u7684bits\u6570<\/p>\n

<\/p>\n

iv)\u786e\u5b9a Kb<\/p>\n

<\/p>\n

v)\u5728\u6240\u6709\u7684\u79fb\u4f4d\u56e0\u5b50\u96c6\u5408\u4e2d,\u627e\u5230\u6700\u5c0f\u7684Z\u3002<\/p>\n

<\/p>\n

vi)\u8868\u793aZc:Kb*Zc>=K\u2019<\/p>\n

vii)\u8bbe\u7f6e:<\/p>\n

K=22Zc,\u5bf9\u4e8eLDPC\u57fa\u56fe1<\/p>\n

K=10Zc,\u5bf9\u4e8eLDPC\u57fa\u56fe2<\/p>\n

viii)\u6267\u884c\u5206\u6bb5\u548c\u6dfb\u52a0CRC\u6bd4\u7279<\/p>\n

<\/p>\n

\u4fe1\u9053\u7f16\u7801<\/p>\n

PDSCH\u4fe1\u9053\u7f16\u7801\u65b9\u5f0f\u91c7\u7528LDPC\u7f16\u7801\u3002<\/p>\n

\u901f\u7387\u5339\u914d<\/p>\n

<\/p>\n

\u7801\u5757\u8fde\u63a5<\/p>\n

<\/p>\n

\u52a0\u6270<\/p>\n

<\/p>\n

\u8c03\u5236<\/p>\n

<\/p>\n

\u5c42\u6620\u5c04<\/p>\n

<\/p>\n

<\/p>\n

<\/p>\n

<\/p>\n

<\/p>\n

<\/p>\n

\u5929\u7ebf\u7aef\u53e3\u6620\u5c04<\/p>\n

\u5c42\u6620\u5c04\u8fc7\u7a0b\u5b8c\u6210\u540e,\u6bcf\u4e2a\u5c42\u88ab\u6620\u5c04\u5230\u5929\u7ebf\u7aef\u53e3\u3002\u5f53CSI\u6ca1\u6709\u5e94\u7528\u65f6,\u6570\u636e\u6309\u4e0b\u5217\u65b9\u5f0f\u6620\u5c04\u5230\u7269\u7406\u5929\u7ebf\u7aef\u53e3\u3002<\/p>\n

<\/p>\n

\u5f53CSI\u4f7f\u7528\u65f6,\u7ecf\u8fc7\u5c42\u6620\u5c04\u7684\u6570\u636e\u88ab\u6620\u5c04\u5230CSI\u5929\u7ebf,\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n

<\/p>\n

\u6620\u5c04\u5230\u865a\u62df\u8d44\u6e90\u5757<\/p>\n

\u5bf9\u4e8e\u5929\u7ebf\u7684\u6bcf\u4e2a\u7aef\u53e3,\u521b\u5efa\u4e00\u4e2a\u865a\u62df\u8d44\u6e90\u7f51\u683c\u3002<\/p>\n

\u5728\u8d44\u6e90\u7f51\u683c\u4e2d,\u7528\u4ece\u6700\u4f4e\u9891\u7387\u5230\u66f4\u9ad8\u9891\u7387\u7684PDSCH\u6570\u636e\u586b\u5145\u6bcf\u4e2a\u8d44\u6e90\u5143\u7d20(RE)\u3002<\/p>\n

\u5f53\u5b83\u5230\u8fbe\u5206\u914d\u7684PDSCH\u8d44\u6e90\u5757\u7684\u6700\u9ad8\u9891\u7387RE\u65f6,\u79fb\u52a8\u5230\u4e0b\u4e00\u4e2aOFDM\u7b26\u53f7\u7684\u6700\u4f4e\u9891\u7387RE\u3002<\/p>\n

\u4f46\u662f\u4e0d\u5e94\u8be5\u4f7f\u7528\u5206\u914d\u7ed9\u4ee5\u4e0b\u76ee\u7684\u7684REs:<\/p>\n

<\/p>\n

\u4ece\u865a\u62df\u8d44\u6e90\u6620\u5c04\u5230\u7269\u7406\u8d44\u6e90<\/p>\n

UE \u5e94\u5047\u8bbe\u6839\u636e\u6307\u793a\u7684\u6620\u5c04\u65b9\u6848,\u975e\u4ea4\u7ec7\u6216\u4ea4\u7ec7\u6620\u5c04\u5c06\u865a\u62df\u8d44\u6e90\u5757\u6620\u5c04\u5230\u7269\u7406\u8d44\u6e90\u5757\u3002\u5982\u679c\u672a\u6307\u793a\u6620\u5c04\u65b9\u6848,\u5219UE \u5e94\u91c7\u7528\u975e\u4ea4\u7ec7\u6620\u5c04\u3002<\/p>\n

<\/p>\n

<\/p>\n

\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9,\u53c2\u80035G<\/span>\u00a0NR 38\u7cfb\u5217\u6807\u51c6\u3002<\/p>\n

\u6587\u4e2d\u4e3b\u8981\u793a\u610f\u56fe,\u6765\u81easharetechnote,\u5728\u6b64\u81f4\u8c22!<\/p>\n

\u6570\u5b57\u57fa\u5e26\u4fe1\u53f7\u5904\u7406\u8fc7\u7a0b,FPGA\u56e0\u7279\u6709\u7684\u7075\u6d3b\u6027\u548c\u5e76\u884c\u7b97\u6cd5\u5904\u7406\u4f18\u52bf,\u53ef\u9488\u5bf95G NR\u7684\u591a\u573a\u666f\u9700\u6c42\u505a\u7075\u6d3b\u5b9a\u5236\u3002\u540c\u65f6,\u4e3a\u5e94\u5bf9\u9ad8\u901f\u4f4e\u65f6\u5ef6\u5904\u7406\u9700\u6c42,\u8003\u9a8c\u7740\u5e7f\u5927\u5de5\u7a0b\u5e08\u7684\u7cfb\u7edf\u67b6\u6784\u8bbe\u8ba1\u80fd\u529b\u3002<\/p>\n

<\/div>\n

<\/g><\/svg><\/i> \"Loading\"<\/p>\n

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NR \u4e0b\u884c\u94fe\u8def\u6570\u636e\u4f20\u8f93\u5173\u4e8e\u5c06\u7528\u6237\u6570\u636e\u8f6c\u6362\u6210PDSCH\u6570\u636e\u5e76\u901a\u8fc7\u6bcf\u4e2a\u4f20\u8f93\u5929\u7ebf\u8fdb\u884c\u4f20\u8f93\u7684\u8fc7\u7a0b\u3002\u8fd9\u662fNR\u4e2d\u6700\u590d\u6742\u7684\u8fc7 […]<\/p>\n

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