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开发平台基本信息

芯片: 展锐P7885
版本: Android 13
kernel: kernel-5.15

问题描述

最近有一款预研设备使用的是展锐 P7885 的5G 智能模组；经过天线厂调试天线后，各项指标都达到了标准，正常待机的情况下信号是 -80 到 -90之间，理论上已经是满格信号了，但是，实际上设备显示只有一格或者两格信号。

解决方法

• 解决方案就是重新按照自己的标准，定义每一格信号对应的dbm范围.

--- a/frameworks/base/telephony/java/android/telephony/CellSignalStrengthNr.java
+++ b/frameworks/base/telephony/java/android/telephony/CellSignalStrengthNr.java
@@ -424,7 +424,22 @@ public final class CellSignalStrengthNr extends CellSignalStrength implements Pa}}// Apply the smaller value among three levels of three measures.
-        mLevel = Math.min(Math.min(ssRsrpLevel, ssRsrqLevel), ssSinrLevel);
+        int rsrpLevel;
+        if (mSsRsrp > -44) {
+           rsrpLevel = SIGNAL_STRENGTH_NONE_OR_UNKNOWN;
+        } else if(mSsRsrp >= -98) {
+           rsrpLevel = SIGNAL_STRENGTH_GREAT;
+        } else if(mSsRsrp >= -108) {
+           rsrpLevel = SIGNAL_STRENGTH_GOOD;
+        } else if(mSsRsrp >= -118) {
+           rsrpLevel = SIGNAL_STRENGTH_MODERATE;
+        } else if(mSsRsrp >= -128) {
+           rsrpLevel = SIGNAL_STRENGTH_POOR;
+        } else {
+           rsrpLevel = SIGNAL_STRENGTH_NONE_OR_UNKNOWN;
+        }
+        Rlog.i(TAG, "Updated 5G mSsRsrp: " + mSsRsrp + " ;rsrpLevel:" + rsrpLevel);
+        mLevel = rsrpLevel;}