Radio Resource Management refers to a group of mechanisms that are collectively responsible for efficiently utilizing a Radio Access Technology to provide services with an acceptable level of QoS. RRM mechanisms contains Power Control, Handover Control, Packet Scheduling or Congestion Control, and Admission Control. Radio Resource Management new strategies are implemented independently in each RAT. RRM strategies is suitable for the heterogeneous network, because each RRM strategy only considers that situation of one particular RAT. CRRM strategy is also known as Multi-access RRM (MRRM) has been proposed. In this paper focus on JCAC algorithm has been presented. Considering four different simulation results are obtained and compared. Result show joint management of radio resources and bandwidth adaptation reduce call blocking or dropping probability in heterogeneous cellular networks