7/21/2019 E1 Formula

http://slidepdf.com/reader/full/e1-formula 1/1

I found this rules in ZTE Dimensioning Guidance for GSM, I hope it can help you:

Abis Interface:

-B Abis =B AbisCS+B AbisPS-B Abis: Bandwidth of Abis interface.-B AbisCS: Bandwidth of AbisCS interface.-B AbisPS: Bandwidth of AbisPS interface. BAbisCS= (IE_CS_2G×Vcs_2G+I_TRX×Vsig_TRX)/(1-CAbisCS)/RelayB BAbisPS= IMCS9_2G×VMCS9_2G/(1-CAbisPS)/RelayBIn which:IE_CS_2G: CS Traffic (Erl)Vcs_2G: Rate of 2G Voice (downlink).I_TRX: TRX NumberVsig_TRX: Average Signalling BW per TRXIMCS9_2G: MCS9 channel NumberVMCS9_2G: Rate of MCS9 Channel(downlink).CAbisCS / CAbisPS: Transmission overhead for CS /PS service;RelayB: Utilization of interface