Hi Pix,
Yes, I am also thinking the same way to adjust CRO of both bands so that it won’t compromise too much on both cells performances. Thanks for the tips. RACH and SDCCH seems to be ok after I had done the CRO setting (manage to offload some of the SD traffic to G18). I think this is the maximum setting that I can achieve. Setting the offset too aggresively will only improving one cell but the other one will just getting worse. Long term solution will be adding a capacity site nearby to offload G9 cells 🙂
Cheers