Ntt Docomo, Inc.

Koji Sasada

Masami Yabusaki

Takashi Koshimizu

Satoshi Hiyama

Yugo Watanabe

Masumi Fujiwara

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.

Location registration system, mobile terminal, control equipment, methods of location registration in the location registration system

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.

Control method and system for information delivery through mobile communications network

A location registerstores as location information of a relay deviceto area identification information of a location registration area where relay deviceis currently located and stores as location information of one or a plurality of mobile communication terminalstransported in a moving objectrelay device identification information of relay deviceto thereby subordinate one or more of a plurality of mobile communication terminalsto relay deviceIn the case that a master/slave relationship should be discontinued with some of a plurality of mobile communication terminalsrelay devicetransmits, to location registera dependency registration removal request specifying the part of a plurality of mobile communication terminalsLocation registerupdates location information of the mobile communication terminalsspecified in the dependency registration removal request to area identification information of a location registration area in which relay deviceis currently located.

Method for managing location information, related relay device and location information management device

A location registration systemcomprises a mobile communication terminaland a location registerfor carrying out location registration of the mobile communication terminal. The location registercomprises a storage sectionfor storing the number of stays of the mobile communication terminal; a location registration period determination sectionfor determining a period of location registration of the mobile communication terminalaccording to the number of stays of the mobile communication terminalstored in the storage section; and a location registration control sectionfor transmitting the period of location registration determined by the location registration period determination sectionto the mobile communication terminal, receiving location information of the mobile communication terminaltransmitted therefrom in response to the transmitted period of location registration, and carrying out location registration of the mobile communication terminalaccording to the received location information.

Location register, location registration system, and location registration method

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.

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Kamakura, Japan

Koji Sasada