Abstract: Mobile terminal status information is sent from a mobile terminal to the communication network after predetermined period advertised from outside, and settings related with a location area for the mobile terminal are made based on the mobile terminal status information at a node in the communication network. In this manner, for example, the optimal location area may be set up in a way to follow changes in the mobile terminal property information, and location control may be performed efficiently even when the mobile terminal does not detect a change of location area, such as when a terminal moving at a high speed slows down it moving speed.

Abstract: A control method and system for information delivery in a mobile communications network in which, as a mobile terminal moves from a communication area to another, a cache node in a delivery channel which delivers cache information to the mobile terminal is switched to another cache node in another delivery channel to reduce information traffic in the network utilizing the cache function of the cache nodes. After a portion of cache information is delivered by a cache node to the mobile terminal, only the remaining portion of cache information is delivered by another cache node.

Abstract: A location register 13 stores as location information of a relay device 21 to area identification information of a location registration area where relay device 21 is currently located and stores as location information of one or a plurality of mobile communication terminals 7 transported in a moving object 2, relay device identification information of relay device 21 to thereby subordinate one or more of a plurality of mobile communication terminals 7 to relay device 21. In the case that a master/slave relationship should be discontinued with some of a plurality of mobile communication terminals 7, relay device 21 transmits, to location register 13, a dependency registration removal request specifying the part of a plurality of mobile communication terminals 7.

Abstract: A location registration system 10 comprises a mobile communication terminal 12 and a location register 14 for carrying out location registration of the mobile communication terminal 12.

Abstract: A mobile communication network includes a plurality of section patterns, each of which is used to section a communication service area into a plurality of location areas. A base station transmits a control signal which includes a plurality of location area IDs corresponding to the section patterns. A cellular phone selects a location area ID of a location area which is obtained by using a section pattern corresponding to the mobile station usage category of the cellular phone, among the plurality of location area IDs contained in the control signal received from the base station, and performs location registration processing by use of the selected location area ID.

Abstract: A location register 13 stores as location information of a relay device 21 to area identification information of a location registration area where relay device 21 is currently located and stores as location information of one or a plurality of mobile communication terminals 7 transported in a moving object 2, relay device identification information of relay device 21 to thereby subordinate one or more of a plurality of mobile communication terminals 7 to relay device 21. In the case that a master/slave relationship should be discontinued with some of a plurality of mobile communication terminals 7, relay device 21 transmits, to location register 13, a dependency registration removal request specifying the part of a plurality of mobile communication terminals 7.

Abstract: A relay device installed in a moving unit can, by notifying an own identification number to a mobile communication network along with identification numbers of all mobile communication terminals subordinate to itself, perform en bloc updating of location registration area information of these mobile communication terminals. This relay device can receive an en bloc paging request wherein paging requests to plural subordinate mobile communication terminals are aggregated, reconstruct the received en bloc paging request, and transmit the paging requests to each of the mobile communication terminals subordinate to itself.

Abstract: Mobile terminal status information is sent from a mobile terminal to the communication network after predetermined period advertised from outside, and settings related with a location area for the mobile terminal are made based on the mobile terminal status information at a node in the communication network. In this manner, for example, the optimal location area may be set up in a way to follow changes in the mobile terminal property information, and location control may be performed efficiently even when the mobile terminal does not detect a change of location area, such as when a terminal moving at a high speed slows down it moving speed.

Abstract: A control method and system for information delivery in a mobile communications network in which, as a mobile terminal moves from a communication area to another, a cache node in a delivery channel which delivers cache information to the mobile terminal is switched to another cache node in another delivery channel to reduce information traffic in the network utilizing the cache function of the cache nodes. After a portion of cache information is delivered by a cache node to the mobile terminal, only the remaining portion of cache information is delivered by another cache node.

Abstract: A location registration system 10 comprises a mobile communication terminal 12 and a location register 14 for carrying out location registration of the mobile communication terminal 12.

Abstract: A mobile communication network includes a plurality of section patterns, each of which is used to section a communication service area into a plurality of location areas. A base station transmits a control signal which includes a plurality of location area IDS corresponding to the section patterns. A cellular phone selects a location area ID of a location area which is obtained by using a section pattern corresponding to the mobile station usage category of the cellular phone, among the plurality of location area IDs contained in the control signal received from the base station, and performs location registration processing by use of the selected location area ID.

Abstract: An object of the present invention is to reduce the control time required when a channel handover is performed in a mobile communication system. The conventional system has such shortcomings that a long time is required for re-designating a channel when a channel handover procedure results in failure. Particularly, in the common access type system, there is such a problem that since a channel handover is required to be performed several times during a channel handover procedure, an extra time is required for performing the handover procedure. The present invention has a plurality of base stations for covering the service area, and a mobile station for performing a communication with the base stations through radio channels.

Abstract: In a communication system having a transmission station which transmits the data signal and a receiving station which receives the data signal, the transmission station consists of an adding means for adding an error detecting code showing a position of a transmission error, which occurs on said data signal, in said data signal to said data signal and a retransmission means for retransmission of a part in said data signal when said receiving station requests the retransmission of the part in said data signal. The receiving station consists of a judgment means for judging a position of the transmission error in said data signal on the basis of the error detecting code which is added by the adding means and a request means for requesting the retransmission of the part containing the transmission error in the data signal on the basis of the position of the transmission error.

Abstract: This invention appropriately regulates or controls a simultaneous communication between different communication methods. When a request of a voice communication is made with respect to a communication terminal 4 which is currently busy with a packet communication from a communication terminal 1, a voice incoming signal is generated at a voice line controller 20. Then, a communication terminal state request is output from the voice line controller 20. This is transmitted to a data base 30 through a data exchange device 21. Then, the data base 30 reads voice line memory AB, packet line memory PB and transmits the same as a communication terminal state response to the voice line controller 20 through the data exchange device 21. As a consequence, the voice line controller 20 can know the communication state of the communication terminal 4 and determines whether or not the voice communication circuit should be connected based on it.

Abstract: In a mobile communication system, a data communication fixed station 3 and a voice communication fixed station 4 control a common service area, the connection between a mobile station 5 and the data communication fixed station 3 can be quickened. The data communication fixed station 3 notifies, sequentially, the voice communication fixed station 4 of channel informations (e.g., usable channels, traffic quantity). The voice communication fixed station 4 receives the channel information via a broadcast channel for voice communication, and broadcasts the channel information to the mobile stations. When the mobile station 5 is to execute packet communication with an ISDN 1 via the data communication fixed station 3, the mobile station 5 selects an appropriate channel among the channels broadcasted thereto, and notifies the data communication fixed station 3 of the selected channel.