{"id":105295,"date":"2026-09-15T08:16:25","date_gmt":"2026-09-15T00:16:25","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/105295.html"},"modified":"2026-09-15T08:16:25","modified_gmt":"2026-09-15T00:16:25","slug":"%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a35g-%ef%bc%9c%e5%8d%81%e5%9b%9b%ef%bc%9e-csi","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/105295.html","title":{"rendered":"\u6df1\u5165\u7406\u89e35g \uff1c\u5341\u56db\uff1e csi"},"content":{"rendered":"

CSI（Channel State Information，\u4fe1\u9053\u72b6\u6001\u4fe1\u606f）\u662f5G\u5b9e\u73b0\u9ad8\u6548\u4f20\u8f93\u4e0e\u5927\u89c4\u6a21MIMO\u7684\u57fa\u77f3\u3002\u5b83\u672c\u8d28\u4e0a\u662f\u7ec8\u7aef（UE）\u5bf9\u4e0b\u884c\u65e0\u7ebf\u4fe1\u9053\u8d28\u91cf\u7684\u201c\u4f53\u68c0\u62a5\u544a\u201d，UE\u901a\u8fc7\u6d4b\u91cf\u57fa\u7ad9\u53d1\u9001\u7684CSI-RS（\u4fe1\u9053\u72b6\u6001\u4fe1\u606f\u53c2\u8003\u4fe1\u53f7）\u6765\u751f\u6210\u8fd9\u4efd\u62a5\u544a，\u5e76\u53cd\u9988\u7ed9\u57fa\u7ad9（gNB），\u4ee5\u4fbf\u57fa\u7ad9\u8fdb\u884c\u81ea\u9002\u5e94\u8c03\u5ea6\u3001\u94fe\u8def\u81ea\u9002\u5e94\u548cMIMO\u9884\u7f16\u7801\u3002<\/p>\n

### 📝 CSI\u7684\u6838\u5fc3\u7ec4\u6210：UE\u53cd\u9988\u4ec0\u4e48？<\/p>\n

UE\u4e0a\u62a5\u7684CSI\u62a5\u544a\u901a\u5e38\u5305\u542b\u4ee5\u4e0b\u5173\u952e\u53c2\u6570，\u5b83\u4eec\u4e4b\u95f4\u5b58\u5728\u4e25\u683c\u7684\u4f9d\u8d56\u5173\u7cfb，UE\u8ba1\u7b97\u65f6\u5fc5\u987b\u6309\u7279\u5b9a\u987a\u5e8f\u8fdb\u884c：<\/p>\n

1. \u00a0**\u79e9\u6307\u793a（Rank Indicator, RI）**：UE\u63a8\u8350\u7684\u7a7a\u95f4\u5c42\u6570（\u5373\u6570\u636e\u6d41\u6570\u91cf），\u53d6\u51b3\u4e8e\u4fe1\u9053\u77e9\u9635\u7684\u79e9\u3002
\n2. \u00a0**\u9884\u7f16\u7801\u77e9\u9635\u6307\u793a（Precoding Matrix Indicator, PMI）**：UE\u63a8\u8350\u7684\u9884\u7f16\u7801\u77e9\u9635，\u7528\u4e8e\u57fa\u7ad9\u8fdb\u884c\u6ce2\u675f\u8d4b\u5f62\u548c\u591a\u6d41\u4f20\u8f93\u3002
\n3. \u00a0**\u4fe1\u9053\u8d28\u91cf\u6307\u793a（Channel Quality Indicator, CQI）**：\u5728\u5047\u8bbe\u57fa\u7ad9\u91c7\u7528\u4e0a\u62a5\u7684RI\u548cPMI\u7684\u524d\u63d0\u4e0b，UE\u80fd\u652f\u6301\u7684\u6700\u9ad8\u8c03\u5236\u7f16\u7801\u65b9\u6848（MCS），\u5bf9\u5e94\u7740\u7279\u5b9a\u7684\u6570\u636e\u901f\u7387\u548c\u5757\u9519\u8bef\u7387（BLER）\u76ee\u6807（\u59820.1\u62160.00001）\u3002
\n4. \u00a0**\u5176\u4ed6\u6307\u793a\u7b26**：\u6839\u636e\u914d\u7f6e，\u62a5\u544a\u8fd8\u53ef\u80fd\u5305\u542b**CSI-RS\u8d44\u6e90\u6307\u793a（CRI）**\u3001**\u5c42\u6307\u793a（LI）**\u3001**L1-RSRP**（\u7528\u4e8e\u6ce2\u675f\u7ba1\u7406\u7684\u53c2\u8003\u4fe1\u53f7\u63a5\u6536\u529f\u7387）\u7b49\u3002<\/p>\n

### 📊 \u53cd\u9988\u673a\u5236：\u5468\u671f\u3001\u534a\u6301\u7eed\u4e0e\u975e\u5468\u671f<\/p>\n

5G NR\u7684CSI\u62a5\u544a\u5728\u65f6\u57df\u4e0a\u975e\u5e38\u7075\u6d3b，\u652f\u6301\u4e09\u79cd\u884c\u4e3a：<\/p>\n

| \u53cd\u9988\u7c7b\u578b | \u89e6\u53d1\u4e0e\u627f\u8f7d\u65b9\u5f0f | \u7279\u70b9 |
\n| :— | :— | :— |
\n| **\u5468\u671f\u6027 (Periodic)** | \u901a\u8fc7RRC\u914d\u7f6e，\u5728PUCCH\u4e0a\u5468\u671f\u6027\u53d1\u9001 | \u5f00\u9500\u56fa\u5b9a，\u7075\u6d3b\u6027\u4f4e |
\n| **\u534a\u6301\u7eed (Semi-Persistent)** | RRC\u914d\u7f6e\u540e，\u901a\u8fc7**MAC CE**\u6fc0\u6d3b\/\u53bb\u6fc0\u6d3b，\u5728PUCCH\u6216PUSCH\u4e0a\u53d1\u9001 | \u517c\u987e\u7075\u6d3b\u6027\u4e0e\u5f00\u9500 |
\n| **\u975e\u5468\u671f (Aperiodic)** | \u7531**DCI**\u52a8\u6001\u89e6\u53d1，\u5728PUSCH\u4e0a\u53d1\u9001 | \u7075\u6d3b\u6027\u6700\u9ad8，\u5f00\u9500\u6700\u4f4e |<\/p>\n

### 🧩 \u7801\u672c\u7c7b\u578b：Type I \u4e0e Type II \u7684\u7cbe\u5ea6\u6743\u8861<\/p>\n

PMI\u7684\u53cd\u9988\u7cbe\u5ea6\u7531\u7801\u672c\u7c7b\u578b\u51b3\u5b9a，\u8fd9\u662fCSI\u8bbe\u8ba1\u7684\u6838\u5fc3\u4e4b\u4e00\u3002<\/p>\n

* \u00a0 **Type I \u7801\u672c**：\u57fa\u4e8e\u9884\u5b9a\u4e49\u7684\u77e9\u9635\u96c6\u5408，UE\u4ece\u4e2d\u9009\u62e9\u3002\u53cd\u9988\u5f00\u9500\u4f4e，\u4f46\u7cbe\u5ea6\u6709\u9650，\u4ec5\u53cd\u9988\u9009\u5b9a\u6ce2\u675f\u7684\u76f8\u4f4d，\u4e0d\u53cd\u9988\u5e45\u5ea6\u4fe1\u606f，\u4e3b\u8981\u7528\u4e8e**\u5355\u7528\u6237MIMO（SU-MIMO）**\u3002
\n* \u00a0 **Type II \u7801\u672c**：\u57fa\u4e8e\u66f4\u590d\u6742\u7684\u6570\u5b66\u516c\u5f0f，\u80fd\u53cd\u9988\u6240\u9009\u6ce2\u675f\u7684**\u5bbd\u5e26\u548c\u5b50\u5e26\u5e45\u5ea6\u4fe1\u606f**，\u7cbe\u5ea6\u66f4\u9ad8，\u9002\u5408**\u591a\u7528\u6237MIMO（MU-MIMO）** \u573a\u666f，\u4f46\u53cd\u9988\u5f00\u9500\u663e\u8457\u589e\u52a0\u3002
\n* \u00a0 **\u589e\u5f3a\u578b Type II (eType II)**：\u4e3a\u5e73\u8861\u7cbe\u5ea6\u4e0e\u5f00\u9500，Release 16\u5f15\u5165\u4e86eType II\u7801\u672c\u3002\u5b83\u5229\u7528\u4fe1\u9053\u5728**\u5ef6\u8fdf\u57df\u7684\u7a00\u758f\u6027**，\u8fdb\u884c**\u9891\u57df\u538b\u7f29**，\u5728\u4e0d\u663e\u8457\u635f\u5931\u6ce2\u675f\u8d4b\u5f62\u7cbe\u5ea6\u7684\u524d\u63d0\u4e0b，\u5927\u5e45\u964d\u4f4e\u53cd\u9988\u5f00\u9500\u3002<\/p>\n

### 📡 \u6d4b\u91cf\u4e0e\u5e72\u6270：CSI-IM \u4e0e NZP CSI-RS<\/p>\n

\u51c6\u786e\u7684CSI\u9700\u8981\u533a\u5206**\u4fe1\u9053\u8d28\u91cf**\u4e0e**\u5e72\u6270**\u30025G\u63d0\u4f9b\u4e86\u4e24\u79cd\u5e72\u6270\u6d4b\u91cf\u673a\u5236：<\/p>\n

* \u00a0 **CSI-IM (CSI Interference Measurement)**：\u914d\u7f6e\u4e3a**\u96f6\u529f\u7387**\u7684CSI-RS\u8d44\u6e90（\u5373\u7a7a\u767dRE）\u3002UE\u6d4b\u91cf\u8fd9\u4e9b\u7a7a\u767d\u8d44\u6e90\u4e0a\u7684\u63a5\u6536\u529f\u7387，\u76f4\u63a5\u4f30\u8ba1\u6765\u81ea\u90bb\u533a\u7684\u5e72\u6270\u3002
\n* \u00a0 **NZP CSI-RS (\u975e\u96f6\u529f\u7387CSI-RS)**：\u5e38\u89c4\u7684\u3001\u7528\u4e8e\u4fe1\u9053\u6d4b\u91cf\u7684CSI-RS，\u4e5f\u53ef\u88ab\u914d\u7f6e\u7528\u4e8e\u5e72\u6270\u6d4b\u91cf，\u4f46CSI-IM\u662f\u66f4\u4e13\u7528\u7684\u5e72\u6270\u6d4b\u91cf\u624b\u6bb5\u3002<\/p>\n

### \u2699\ufe0f \u914d\u7f6e\u6d41\u7a0b：RRC\u3001MAC CE \u4e0e DCI \u7684\u534f\u540c<\/p>\n

CSI\u7684\u914d\u7f6e\u4e0e\u89e6\u53d1\u662f\u4e00\u4e2a\u591a\u5c42\u7ea7\u4fe1\u4ee4\u534f\u540c\u7684\u8fc7\u7a0b：<\/p>\n

1. \u00a0**RRC\u5c42\u914d\u7f6e**：\u57fa\u7ad9\u901a\u8fc7RRC\u4fe1\u4ee4\u5411UE\u914d\u7f6e`CSI-ReportConfig`（\u62a5\u544a\u8bbe\u7f6e）\u548c`CSI-ResourceConfig`（\u8d44\u6e90\u914d\u7f6e），\u5b9a\u4e49\u62a5\u544a\u5185\u5bb9\u3001\u65f6\u57df\u884c\u4e3a\u3001\u7801\u672c\u7c7b\u578b\u3001\u6d4b\u91cf\u8d44\u6e90\u7b49\u3002
\n2. \u00a0**\u6fc0\u6d3b\u4e0e\u89e6\u53d1**：
\n\u00a0 \u00a0 * \u00a0 **\u534a\u6301\u7eedCSI**：\u901a\u8fc7**MAC CE**\u8fdb\u884c\u6fc0\u6d3b\/\u53bb\u6fc0\u6d3b\u3002
\n\u00a0 \u00a0 * \u00a0 **\u975e\u5468\u671fCSI**：\u901a\u8fc7**DCI**（\u4e0b\u884c\u63a7\u5236\u4fe1\u606f）\u4e2d\u7684CSI\u8bf7\u6c42\u5b57\u6bb5\u52a8\u6001\u89e6\u53d1\u3002<\/p>\n

### 💡 \u8fdb\u9636：\u6ce2\u675f\u7ba1\u7406\u4e0e\u5f00\u9500\u538b\u7f29<\/p>\n

CSI-RS\u4e5f\u7528\u4e8e**\u6ce2\u675f\u7ba1\u7406**\u3002UE\u53ef\u901a\u8fc7\u6d4b\u91cfCSI-RS，\u4e0a\u62a5**L1-RSRP**\u548c**CRI**，\u5e2e\u52a9\u57fa\u7ad9\u786e\u5b9a\u548c\u7ef4\u6301\u6700\u4f73\u6ce2\u675f\u5bf9\u3002<\/p>\n

\u9762\u5bf9\u5927\u89c4\u6a21MIMO\u5e26\u6765\u7684CSI\u53cd\u9988\u5f00\u9500\u6311\u6218，\u9664\u4e86eType II\u7801\u672c，\u4e1a\u754c\u6b63\u63a2\u7d22**\u57fa\u4e8e\u4eba\u5de5\u667a\u80fd（AI\/ML）\u7684CSI\u538b\u7f29**\u65b9\u6848，\u5229\u7528\u795e\u7ecf\u7f51\u7edc\u5728UE\u7aef\u538b\u7f29CSI\u3001\u5728\u57fa\u7ad9\u7aef\u91cd\u5efa，\u6709\u671b\u5728\u4fdd\u8bc1\u7cbe\u5ea6\u7684\u540c\u65f6\u5c06\u5f00\u9500\u964d\u4f4e\u4e00\u5230\u4e24\u4e2a\u6570\u91cf\u7ea7\u3002<\/p>\n

\u603b\u7684\u6765\u8bf4，5G CSI\u4f53\u7cfb\u662f\u4e00\u4e2a\u4ece\u6d4b\u91cf\u3001\u8ba1\u7b97\u3001\u53cd\u9988\u5230\u914d\u7f6e\u7684\u5b8c\u6574\u95ed\u73af，\u5176\u6838\u5fc3\u8bbe\u8ba1\u601d\u60f3\u662f\u5728**\u7075\u6d3b\u6027\u3001\u7cbe\u5ea6\u4e0e\u5f00\u9500**\u4e4b\u95f4\u5bfb\u6c42\u6700\u4f73\u5e73\u8861，\u4ee5\u5145\u5206\u91ca\u653e\u5927\u89c4\u6a21MIMO\u548c\u6ce2\u675f\u8d4b\u5f62\u7684\u6f5c\u529b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

CSI（Channel State Information，\u4fe1\u9053\u72b6\u6001\u4fe1\u606f）\u662f5G\u5b9e\u73b0\u9ad8\u6548\u4f20\u8f93\u4e0e\u5927\u89c4\u6a21MIMO\u7684\u57fa\u77f3\u3002\u5b83\u672c\u8d28\u4e0a\u662f\u7ec8\u7aef（UE）\u5bf9\u4e0b\u884c\u65e0\u7ebf\u4fe1\u9053\u8d28\u91cf\u7684\u201c\u4f53\u68c0\u62a5\u544a\u201d，UE\u901a\u8fc7\u6d4b\u91cf\u57fa\u7ad9\u53d1\u9001\u7684CSI-RS（\u4fe1\u9053\u72b6\u6001\u4fe1\u606f\u53c2\u8003\u4fe1\u53f7）\u6765\u751f\u6210\u8fd9\u4efd\u62a5\u544a，\u5e76\u53cd\u9988\u7ed9\u57fa\u7ad9（gNB），\u4ee5\u4fbf\u57fa\u7ad9\u8fdb\u884c\u81ea\u9002\u5e94\u8c03\u5ea6\u3001\u94fe\u8def\u81ea\u9002\u5e94\u548cMIM<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3053],"topic":[],"class_list":["post-105295","post","type-post","status-publish","format-standard","hentry","category-server","tag-5g"],"yoast_head":"\n\u6df1\u5165\u7406\u89e35g \uff1c\u5341\u56db\uff1e csi - 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