Patent ID: 8744459
Filing Date: 2014-06-03
Classification: H04L,H04W

Abstract:
1. A communication system including a mobile communication terminal provided with a wireless communication function and a plurality of service providing apparatuses providing a plurality of services to the mobile communication terminal via a wireless base station, wherein the service providing apparatus, upon entering a suspended state of the services, transmits a signal indicating that a suspended state of the services has been entered to service providing apparatuses other than said service providing apparatus, and when the signal is received, releases resources of the mobile communication terminal to which the service providing apparatus having transmitted the signal has provided services, and the service providing apparatus comprises: a management table that stores MS management information in which MS identification information attached to a mobile communication terminal to which said service providing apparatus is providing services and ASN-GW (Access Service Network Gateway) identification information attached to the service providing apparatuses respectively providing services to the mobile communication information are associated to each other; a service provider providing the services; a failure detector that detects that the service provider has entered a service suspended state; a failure occurrence signal creator that creates, when a transition to a service suspended state is detected by the failure detector, a failure occurrence signal including ASN-GW identification information attached to said service providing apparatus and which indicates that the failure has occurred; a communicator that transmits the failure occurrence signal to service providing apparatuses other than said service providing apparatus among the plurality of service providing apparatuses; a management table updater that extracts, when receiving the failure occurrence signal from service providing apparatuses other than said service providing apparatus among the plurality of service providing apparatuses, ASN-GW identification information from the received failure occurrence signal and, based on the extracted ASN-GW identification information, retrieves MS management information associated with the ASN-GW identification information from the management table; and a resource manager that releases resources of a mobile communication terminal to which the retrieved MS identification information is attached.