GSM (not sure about UMTS) has a concept of 4X3 frequency reuse concept, can someone please explain that.
1- Which messages gets exchanged between UE and network when enabling airplane mode in Idle/connected mode in LTE or UMTS?
2- Can we initiate Emergency call when in Airplane mode ?
How the Network flow will be in this scenario? Just came up in my mind as I am not aware of this scenario, What would be the elements behavior and message exchanges in this case.
Can someone explain the Interworking of VoLTE with UMTS/GSM? Say UE is Attached to LTE and IMS Registered to Use VoLTE Services. And Now It wants to Initiate a Voice Call to the User who is in 3G/2G Network. How the Call will be established from signalling point of view?
I formula/ equations that will enable me calculate the capacity/throughput of GSM base station, UMTS base station and LTE eNodeB.
If there are simulation software, can someone please kindly tell me how to get them and use them.