Abstract: An authoritative server and method are described herein that enable a person to use a Video-on-Demand (VoD) service subscription on their mobile phone (e.g., user device) to have a service operator (e.g., IMS operator) stream a video to a target device (e.g., TV terminal, computer terminal) instead of to their mobile phone.

Abstract: The present invention relates to a method for efficient routing in a multiple hop wireless communication network. The routing method comprise the steps of providing link status information by acquiring link status quality between nodes in the network, updating a routing element (101) with said link status information, determining an appropriate route according to said link status information with respect to traffic content, and routing traffic according to said determined appropriate route.

Abstract: The present invention relates to a system for efficient routing in a multiple hop wireless communication network comprising a plurality of network nodes is presented. The system comprises means (3001) for acquiring quality information indicating link status between said infrastructure nodes, means (3002) for using said link quality information in a route determination process in the infrastructure nodes using a predictive procedure, said link quality information containing information about a time varying information of said link status; and said predictive procedure uses said time varying information of link status in the predictive procedure; and routing means (101) for routing data packets according to a determined route.

Abstract: The present invention relates to a method for efficient routing in a multiple hop wireless communication network. The invention is characterized in that data packets are routed over transmission paths using the following steps providing link status information by acquiring link status quality between nodes in the network, updating a routing element (101) with said link status information, determining possible routes with essentially similar link quality status for said data packet, and routing said data packet via the determined routes.

Abstract: To reduce change on a cellular network side required at the time of utilizing a cellular network by way of an IP network. A radio terminal 110 puts a location registration message for a cellular network 100 on an IP packet, and sends the message to an access point 102. This IP packet is transferred to a control proxy server 131. The control proxy server 131 stores a correspondence between identification information on a radio terminal and an IP address based on a location registration request. If necessary, the location registration request is converted into the location registration message in compliance with a standard of the cellular network 100. The location registration message is transferred to an MSC/VLR 121 via a gateway 130. As the gateway 130 looks like an ordinary base station to the MSC/VLR 121 and an ordinary location registration message is usable, any change on the cellular network side is not necessary.

Abstract: A network interworking device used in a communication system which has a first communication network with an IP, a second communication network and a plurality of other network interworking devices connected to the first communication network, the network interworking device being connected between the first communication network and the second communication network for converting IP packets communicated in the first communication network and information signals communicated in the second communication network with each other. The network interworking device includes a packet assembler unit for assembling information signals of a plurality of calls received from the second communication network into a single IP packet when the plurality of calls are to be transmitted to the same network interworking device.

Abstract: A method for evaluating quality-of-service in packet switching network uses an evaluation signal with a frequency component that changes continuously with a lapse of time. The evaluation signal is a time stretched pulse, and wherein the method includes a step of transmitting the time stretched pulse to at least one packet switching network, a step of receiving the time stretched pulse passed through the at least one packet switching network, and a step of comparing the transmitted time stretched pulse with the received time stretched pulse.

Abstract: A group communication system includes a plurality of mobile terminals with member-attribute information, and a center component for collecting location information of the mobile terminals. The center component includes a group generation device for generating a group based on a group-area information and a group-attribute information which are specified, and a group member management device for always monitoring joining and leaving of the mobile terminals with the location information and the member-attribute information which correspond to the group-area information and the group-attribute information of the group, respectively.

Abstract: To reduce change on a cellular network side required at the time of utilizing a cellular network by way of an IP network.

Abstract: A unit charge is set and varied in course of time by the unit charge decision apparatus 12. A new unit charge is notified, via the circuit 2, to the display 8 at the user's home 6 by the unit charge notification apparatus 13. A communication charge is calculated by using the notified unit charge. At this time, the monitor 11 monitors, after notifying the unit charge, a state of use of the service facilities and the history database 15 records a correlation between the unit charge already notified to the user and the monitored state of use of the service facilities after having notified the unit charge. The unit charge decision apparatus 12 decides the new unit charge based on the correlation between the unit charge already notified to the user and the state of use of the service facilities after having notified the unit charge by using the recorded history data.

Abstract: A network interworking device for executing conversion between IP packets and ATM cells, the network interworking device being to be connected between an IP network in which information are transmitted in a form of the IP packets and an ATM network in which information are transmitted in a form of the ATM cells, the IP network having a hierarchy structure with an IP layer, the ATM network having a hierarchy structure with an AAL layer, the network interworking device comprising means for assembling a plurality of ATM cells in the ALL layer of the ATM network into an IP packet when the plurality of the ATM cells are to be transmitted to the same address in the IP communication network, the assembled IP packet being transmitted to the IP layer, and means for disassembling an IP packet in the IP layer of the IP network into a plurality of ATM cells, the disassembled ATM cells being transmitted to the AAL layer.

Abstract: A routing control communication system includes a circuit switched network provided with a service control information database having a telephone numbers table, an interconnection network provided with a network communication protocol and an information terminal, and a network interworking equipment provided with one terminal connected with the circuit switched network and the other terminal connected with the interconnection network. The information database is connected with the interconnection network, and the information terminal of the interconnection network is constituted so as to obtain a transferred terminal number corresponding to a called telephone number from the service control information database.

Abstract: The present invention provides a contents provision method where contents required by a user may be provided with high quality at a place and a time which are reserved by the user.

Abstract: A group communication system includes a plurality of mobile terminals with member-attribute information, and a center component for collecting location information of the mobile terminals. The center component includes a group generation means for generating a group based on a group-area information and a group-attribute information which are specified, and a group member management means for always monitoring joining and leaving of the mobile terminals with the location information and the member-attribute information which correspond to the group-area information and the group-attribute information of the group, respectively.

Abstract: In a payer-variable exchange system, exchanges 2A and 2B and payer change control devices are provided corresponding to telephones 1A and 1B used by communicators A and B, payer change function units 4A and 4B of the payer change control devices 3A and 3B transmit and receive signals with the payer change function units 4A and 4B of the other parties, a communication amount for which the communicator itself is the payer is calculated by the charge calculation units 5A and 5B, and the same operation is repeated every time a payer change request is received.

Abstract: Adaptive traffic control apparatus and method control connection of arriving calls in at least one circuit group in circuit-switched networks. The switching systems in general measure the number of calls in progress n(t) at a time t in the circuit group, where t.sub.0 .ltoreq.t.ltoreq.T, t.sub.0 is a traffic control initiation time and T is a target time of the traffic control. In particular, an admissible number of calls d(t) in the circuit group at the time tis calculated so that all the circuits of the group will be free by the target time T, and the measured number of calls in progress n(t) is compared with the calculated admissible number of call d(t) at each time a new call arrives at the circuit group to decide that the arriving new call is to be accepted if n(t)<d(t) and that the arriving new call is to be rejected if n(t).gtoreq.d(t).

Abstract: A communication protocol validation system which produces a global state transition chart having a plurality of states and a plurality of transitions between states in electrical form to find an error and/or a deadlock of the protocol has been improved by coupling a plurality of global transitions according to a predetermined algorithm and deleting redundant global transitions. Thus, a number of global states and a number of global transitions in the chart are reduced, and the validation is implemented by using a reasonable amount of hardware in a reasonable time.