by shifting SD from CHGR 1 to CHGR0 giving improvement.
Try understand logic behind that. Like if the SDCCH were put on the BCCH frequency and the frequency plan were different for the BCCH than for non-BCCH frequencies. It is possible that the interference situation is worse on the BCCH, thereby causing a relatively high percentage of drops on SDCCH compared to TCH.
Kindly share our views & try this.
You will get very good improvement in CNDROP.
Many Thnx Pix,
For my cases i have massive improvement in SD Drop,CNDROP by SD shifting. What i know that BCCH TRX is always clean & tx on max power so impacting better on SD.Also let me know parameter to be use for SD Drops improvement other than normal ones for ericsson. C/I,overshooting,HW issue all checked.