Hello,
You said that when phone is moving then call is transffered to second cell . But if I phone is not on call then what will happen? And also who will transfer. Is it mobile initiated process or BTS initiate or BSC initiate? And also what do you mean by capacity of cell?
I hope a mobile continously transffered signals to BTS (it's nearest Cell). It does'nt depand whether MS is on call or idle. As per my knowledge, It is a BTS initiated process. Every BTS has an attribute i.e. power capability. Power capability attribute changes according to distance of a MS with BTS. Whenever a BTS finds that power capability is going down it sends Handover request new BTS(or BSC confused!!!!).
I will be glad to see your response.
Gaurav Bhatnagar