Before revision:  The model differs in many respects from previous works on load balancing , in particular by incorporating the call admission process, through random access ; by allowing the differentiation of users based on their priorities ;
After revision:  The model differs in many respects from previous works on load balancing , in particular by incorporating the call admission process, through random access . In specific, the proposed model implements the Physical Random Access Channel used in 3GPP network standards. Furthermore, the proposed model allows the differentiation of users based on their priorities ;