I am radio network optimization engineer work on Huawei equipments. When I asked to activate dynamic half rate in some cells in one BSC, the BSC guy said there is no BIE resource available to activate DHR or add new sites to this BSC.
I got to know that BIE is the interface board between A-bis and A-ter. But I still can not understand the relation between half rate and BIE ports.
Firstly, I want to correct your understanding for the BIE. It is an interface Board between the Abis & BS interfaces not Ater.
For Huawei BSC32, each module contains 8 BIE groups plus a TTBIE. Each BIE group contains 8 High Way innetfaces except group number8 it contains only 4 High Way. One HW supports switching for 32 time slots. So, if you want to activate DHR for a site, then the number of time slots would be increased resulting in the increment of HW required.