a call admission control method which operates in a network including at least one target cell and a plurality of neighboring cells under a variety of conditions . when only common measurements are available , the cac function at a controlling remote network controller determines whether to accept or reject a request to setup or reconfigure a radio access bearer based on common measurements of the target cell and neighboring cells , estimated common measurements after admission , and load measurements of the target cell and the neighboring cells . when no measurements are available , the cac function at the crnc determines whether to accept or reject the request based on estimated load of the target cell and neighboring cells . the load is estimated based on the signal - to - interference ratio of the requested radio access bearer , and the sir of existing coded composite transport channels in the target cell and neighboring cells .