Abstract: An apparatus connected to a communication terminal and for relaying a call between communication terminals. This apparatus includes a relay determiner, a priority determiner, and a relay controller. The relay determiner determines whether if a new call can be relayed based on the communication capacity, when there is a relaying request of a new call from a communication terminal or to a communication terminal. The priority determiner determines the priorities of a call that is being relayed and a new call based on the pre-configured policy. The relay controller may allow the relaying request of a new call by stopping the relaying of any existing call having a lower priority than the new call among the calls that are being relayed.

Abstract: The present invention provides a method of protecting the integrity of messages sent between a mobile terminal and a server radio access network controller in a mobile radio system, in which method a message sent is protected by a code calculated on sending and, in the event of a change of server radio access network controller from a source controller to a target controller, a message sent to the mobile terminal by the source controller, for forwarding to the mobile terminal information created in the target controller and then transferred by the target controller to the source controller, is protected by a code calculated in the target controller.

Abstract: When a mobile station moves from a communication area of a first access point to a communication area of a second access point, an information processing device provided for the second access point functions as an extraction device, a request device, and a communication device. The extraction device extracts first access point identification information identifying the first access point from a connection request message received from the mobile station. The request device requests the first access point to transmit the control information relating to the communication of the mobile station using the first access point identification information. The communication device establishes a link to the mobile station using the control information acquired from the first access point.

Abstract: An apparatus connected to a communication terminal and for relaying a call between communication terminals. This apparatus includes a relay determiner, a priority determiner, and a relay controller. The relay determiner determines whether if a new call can be relayed based on the communication capacity, when there is a relaying request of a new call from a communication terminal or to a communication terminal. The priority determiner determines the priorities of a call that is being relayed and a new call based on the pre-configured policy. The relay controller may allow the relaying request of a new call by stopping the relaying of any existing call having a lower priority than the new call among the calls that are being relayed.

Abstract: A method and apparatus of changing the number of calls in a multicall communication mode including detecting an occurrence of handover, transmitting a special message having inserted therein call-number changing information regarding the increase or decrease of a number of calls to a switching center as a connection destination connected by handover, transmitting the special message to inform a number of calls capable of being supported to a mobile terminal, receiving a reply regarding a desired call to be maintained selected from a plurality of calls, and rearranging the handover process so the desired call is maintained in connection while the call not desired is disconnected. Thereby allowing the user of the mobile terminal to select a desired call to be maintained when handover is executed under the congested state condition in the communication system which hinders smooth handover from one switching center to another.

Abstract: A communication service information providing method is comprised the step of storing both a plurality of communication services which are subscribed to by a subscriber and are made of plural sorts of information representation media, and identification information capable of selectively utilizing the communication services so as to establish a communication, and the step of notifying both the communication service subscribed to by a subscriber that wants to establish a communication, and the identification information corresponding to the communication service to a calling terminal in response to a request issued from the calling terminal. With employment of this structural step, it can acquire and/or confirm both the communication service subscribed to by the subscriber of the communication counter party and the identification information, or the identifier corresponding to this communication service.

Abstract: [Object ] Provides a method for controlling service priority in radio communication network capable of performing priority control to plural services based on a priority specified by mainly a subscriber. [Means to Achieve the Object ] A method for controlling service priority among plural services in a radio communication network capable of providing plural services to a terminal unit of subscriber at the same time, comprising the steps of: requesting to a radio control apparatus for a service by the terminal unit; and assigning a radio band to the service by the radio control apparatus; and wherein, if the radio band falls insufficient in the step of assigning the radio band, the radio control apparatus performs the priority control to plural services consisting of adjusting the radio band to be assigned to each service based on a predetermined standard.

Abstract: A radio switching system includes a mobile subscriber; a base station controller for controlling a transmission and reception of a signal of the mobile subscriber within an own cell; a mobile switching center connecting with a plurality of the base station controllers; and a home location register for storing home zone information whether or not the mobile subscriber is a subscriber of home zone services. The mobile switching center judges whether or not a registration is accepted with respect to a location registration request inside/outside a home zone of the mobile subscriber, based on home zone information sent from the home location register.

Abstract: A method and apparatus of changing the number of calls in a multicall communication mode including detecting an occurrence of handover, transmitting a special message having inserted therein call-number changing information regarding the increase or decrease of a number of calls to a switching center as a connection destination connected by handover, transmitting the special message to inform a number of calls capable of being supported to a mobile terminal, receiving a reply regarding a desired call to be maintained selected from a plurality of calls, and rearranging the handover process so the desired call is maintained in connection while the call not desired is disconnected. Thereby allowing the user of the mobile terminal to select a desired call to be maintained when handover is executed under the congested state condition in the communication system which hinders smooth handover from one switching center to another.

Abstract: A communication system capable of conducting efficient multi prepaid service and also improving the quality and convenience of prepaid communication service. Service request transmitting section transmits a service request for a prepaid service, and prepaid service executing section executes the prepaid service. Registration information transmitting section transmits registration information for executing the prepaid service. User request receiving section receives the service request and the registration information. Based on the service request and the registration information, prepayment control section performs prepayment control including a process of allotting the balance of prepayment to a plurality of prepaid services to be conducted simultaneously. Prepaid service providing section provides the prepaid service in accordance with the corresponding allotment of the balance.

Abstract: A method and apparatus of changing the number of calls in a multicall communication mode including detecting an occurrence of handover, transmitting a special message having inserted therein call-number changing information regarding the increase or decrease of a number of calls to a switching center as a connection destination connected by handover, transmitting the special message to inform a number of calls capable of being supported to a mobile terminal, receiving a reply regarding a desired call to be maintained selected from a plurality of calls, and rearranging the handover process so the desired call is maintained in connection while the call not desired is disconnected. Thereby allowing the user of the mobile terminal to select a desired call to be maintained when handover is executed under the congested state condition in the communication system which hinders smooth handover from one switching center to another.

Abstract: A reception forcing method is used in a mobile communication system which includes a managing center. The method includes the steps of registering in advance identification information which is related to each caller permitted to make a forced reception in the managing center, originating a call from a caller by adding identification information of the caller when making a forced reception at a destination subscriber, and forcing a reception at the destination subscriber by avoiding a screening function of the destination subscriber regardless of whether or not the screening function of the destination subscriber is turned ON, if the identification information of the caller is registered in the managing center.

Abstract: The present invention provides a method of protecting the integrity of messages sent between a mobile terminal and a server radio access network controller in a mobile radio system, in which method a message sent is protected by a code calculated on sending and, in the event of a change of server radio access network controller from a source controller to a target controller, a message sent to the mobile terminal by the source controller, for forwarding to the mobile terminal information created in the target controller and then transferred by the target controller to the source controller, is protected by a code calculated in the target controller.

Abstract: A communication system capable of conducting efficient multi prepaid service and also improving the quality and convenience of prepaid communication service. Service request transmitting section transmits a service request for a prepaid service, and prepaid service executing section executes the prepaid service. Registration information transmitting section transmits registration information for executing the prepaid service. User request receiving section receives the service request and the registration information. Based on the service request and the registration information, prepayment control section performs prepayment control including a process of allotting the balance of prepayment to a plurality of prepaid services to be conducted simultaneously. Prepaid service providing section provides the prepaid service in accordance with the corresponding allotment of the balance.

Abstract: A terminal device of the present invention is connected via a communication line to a network for providing a subscriber with a communication service to which a plurality of accounting methods can be applied, and operated by the subscriber when utilizing the communication service. The terminal device displays an accounting quantity corresponding to each of a plurality of accounting methods in the process of utilizing the communication service.

Abstract: A communication service information providing method is comprised the step of storing both a plurality of communication services which are subscribed to by a subscriber and are made of plural sorts of information representation media, and identification information capable of selectively utilizing the communication services so as to establish a communication, and the step of notifying both the communication service subscribed to by a subscriber that wants to establish a communication, and the identification information corresponding to the communication service to a calling terminal in response to a request issued from the calling terminal. With employment of this structural step, it can acquire and/or confirm both the communication service subscribed to by the subscriber of the communication counter party and the identification information, or the identifier corresponding to this communication service.

Abstract: The present invention mainly proposes a method of changing the number of calls in a multicall communication mode including a step of detecting an occurrence of handover, a step of transmitting a special message having inserted therein call-number changing information regarding the increases and decreases of number of calls to a switching center as a connection destination connected by handover, a step of transmitting the special message to inform a number of calls capable of being supported to a mobile terminal, a step of receiving a reply regarding a desired call to be maintained selected from the plurality of calls, and a step of rear ranging the handover process so that the call desired to be maintained is maintained in connection while the call not desired to be maintained selected from the plurality of calls by the first multicall mode supporting terminal is disconnected.

Abstract: A radio switching system includes a mobile subscriber; a base station controller for controlling a transmission and reception of a signal of the mobile subscriber within an own cell; a mobile switching center connecting with a plurality of the base station controllers; and a home location register for storing home zone information whether or not the mobile subscriber is a subscriber of home zone services. The mobile switching center judges whether or not a registration is accepted with respect to a location registration request inside/outside a home zone of the mobile subscriber, based on home zone information sent from the home location register.