Patent ID: 8244261
Filing Date: 2012-08-14
Classification: H04W

Abstract:
1. A radio resource managing apparatus for receiving a normal call request or a handover call request and managing radio resources for processing the normal call request or the handover call request and in a mobile communication system, the apparatus comprising: a call admission controller to determine whether or not to admit the normal call request or the handover call request depending on whether a Quality of Service (QoS) is guaranteed, traffic is real time traffic, or locking of traffic is possible; and a load controller to allocate the radio resources in response to the normal call request or the handover call request while checking spare radio resources, and to provide the call admission controller with information indicating allocable radio resources, wherein the call admission controller receives the normal call request or the handover call request, transmits the normal call request or the handover call request to the load controller and estimates whether the QoS is guaranteed based on the information indicating the allocable radio resources, wherein if the QoS is guaranteed, the call admission controller admits the normal call or the handover call, and if the QoS is not guaranteed, the call admission controller determines whether the traffic is real time traffic, wherein, if the traffic is real time traffic, the call admission controller requests the load controller to allocate radio resources and estimates whether QoS is guaranteed, if the QoS is guaranteed, the call admission controller admits the normal call or the handover call, and if the QoS is not guaranteed, determines whether traffic locking is possible, and if the traffic locking is possible, the call admission controller requests the load controller to allocate radio resources capable of guaranteeing a minimum level of QoS, thereby admitting the normal call or the handover call.