System and method used in a mobile telecommunications network for load balancing ongoing calls between different base station controllers

A mobile telecommunications network comprising:

• a switching center;
• a first base station having a first cell, said first base station coupled to the switching center;
• a second base station having a second cell adjacent to the first cell of the first base station, said second base station coupled to the switching center including:
• a second controller for transmitting a message to the first base station whenever a resource utilization number of the second cell changes as to exceed or fall below a predetermined threshold, where the second base station can accept at least one ongoing call from the first base station when the resource utilization number of the second base station is less than the predetermined threshold.

A method used in a mobile telecommunications network for sharing loads between a first base station controller having a first cell and a second base station controller having a second cell adjacent to the first cell, said method comprising the steps of:

• establishing and distributing a predetermined threshold to the first and second base station controllers;
• generating a first load indication message within the first base station controller;
• transmitting the first load indication message to the second base station controller;
• and
• comparing the transmitted first load indication message to the distributed predetermined threshold to determine whether to handover at least one ongoing call from the second cell of the second base station controller to the first cell of the first base station controller.