Ntt Docomo, Inc.

Nec Corporation

Panasonic Mobile Communications Co., Ltd.

Katsuhiro Noguchi

Minami Ishii

Takashi Suzuki

Kota Fujimura

Shinpei Kawakatsu

Kazuyuki Kozu

Masashi Kanauchi

Akimichi Tanabe

Ryo Kitahara

Atsushi Sato

Hiroshi Aono

Taketoshi Nakajima

Gou Okuizumi

Hideo Mochida

Tsuyoshi Takakura

Takuhisa Tahara

Katsunobu Ohtsuki

An object is to provide a communication device, a communication system, and a restricting method permitting a communication restriction for each service class. A user equipmenthas a memory unitwhich stores service class information showing correspondence between service classes indicative of available communication services, and service class codes to discriminate the service classes. A notice information transmitting unitthen receives a restriction message indicative of a service class number from an RNC. When the restriction message including the service class number is received, a restricting unitspecifies a service class corresponding to the service class number stored in the memory unitand implements a communication restriction in the service class on a communication processing unit

Communication device, communication system, and restricting method

In a mobile communication system, a radio device is configured to transmit notification information transmitted from a distribution server, to a mobile station, by use of broadcast communication. The distribution serverincludes a key transmitter unitconfigured to transmit a public key of the distribution serverto the mobile station UE; the radio device RNC, Node B includes a notification information transmitter unitA configured to transmit, to the mobile station UE, the notification information transmitted from the distribution server; and the mobile station UE includes an authentication unitconfigured to authenticate the validity of the received notification information in reference to an electronic signature for the notification information.

Mobile communication system, mobile communication method, distribution server, radio network controller and mobile station

Provided are a mobile device and location registration method that, even when packet communications are being restricted and the location cannot be registered, the location can be registered rapidly when the access restriction is released. The mobile device comprises a packet timing unit that times a predetermined time; a location registration unit that registers the location to the control server for packet communications; a timing control unit that, if control server for packet communications is under access restriction, controls the timing operations to be temporarily stopped; and a location registration control unit that controls the location registration unit to register the location to the control server for packet communications, and also controls the location registration unit to register the location to the control server for packet communications if the control server for packet communications has released the access restriction and if the timing control unit has stopped the timing operations of the packet timing unit.

Mobile device and location registration method

A communication device, a communication system, and a restricting method permitting a communication restriction for each service class. A user equipment has a memory unit which stores service class information showing correspondence between service classes indicative of available communication services, and service class codes to discriminate the service classes. A notice information receiving unit then receives a restriction message indicative of a service class number from an RNC. When the restriction message including the service class number is received, a restricting unit specifies a service class corresponding to the service class number stored in the memory unit and implements a communication restriction in the service class on a communication processing unit.

Communication device, communication system and restricting method

A packet communication method of the present invention includes a step of: receiving, at a mobile station (UE), restriction information for accepting an incoming call and restricting an outgoing call; establishing, at the mobile station (UE), a control path with a packet exchange (SGSN) in response to incoming of paging for the mobile station (UE); sending, the packet exchange (SGSN), a message instructing to establish the data path via the control path; and establishing, at the mobile station (UE), the data path by calling to the packet exchange (SGSN), when the mobile station (UE) receives the message after the mobile station (UE) has received the restriction information.

Packet communication method and mobile station

In a mobile communication system, the radio device RNC, Node B includes: a creation unitconfigured to create, on the basis of the notification information received from the distribution server, simplified information indicating content of the notification information, and detailed information indicating content of the notification information with a greater amount of information than that of the simplified information; a simplified information transmitter unitconfigured to transmit the simplified information to the mobile station by use of a control channel for starting the broadcast communication; and a detailed information transmitter unitconfigured to transmit the detailed information to the mobile station by use of a traffic channel for broadcast communication, and the mobile station UE includes: a display unitconfigured to display the received detailed information, after displaying the received simplified information.

Mobile communication system, mobile communication method, radio network controller, radio base station and mobile station

A mobile terminal UE according to the present invention performs, in an IP network, a normal communication between the mobile terminal and a normal communication terminal via a first call control apparatus S-CSCF#1, and an emergency-communication between the mobile terminal and an emergency-communication terminal via a second call control apparatus S-CSCF#2, including an emergency-communication session establishment processing unitconfigured to perform an emergency-communication session establishment process between the mobile terminal UE and the emergency-communication terminal, without performing an emergency-communication location registration process for the mobile terminal in the second call control apparatus S-CSCF#2, when a normal-communication location registration process for the mobile terminal is completed in the first call control apparatus S-CSCF#1.

Mobile terminal and mobile communication system

A communication system according to the present invention includes: a mobile station; an access point located on a radio access system; and a switch apparatusconnected to the radio access system, wherein a secured connection between a mobile stationand the access pointhas been already established. The mobile stationincludes a judgment unitconfigured to judge whether or not to establish a secured connection between the mobile stationand the switch apparatus

Communication system, mobile station, switch apparatus, and communication method

A relay device includes a security information reception unit, a security information processing unit, and a security information transmission unit. The security information reception unit receives, from a terminal device, first security information containing a user ID and user authentication information of a user of the terminal device. The security information processing unit adds a relay device ID and relay device authentication information to the first security information to generate second security information. The security information transmission unit transmits the second security information to an authentication server.

Relay device, authentication server, and authentication method

A mobile station performs location registration to one of exchanges managing a location registration area where the mobile station is located, in a mobile communication system in which a plurality of exchanges manage one location registration area and a radio network controller is connected to the plurality of exchanges. The mobile station includes a communication controller configured to stop transmission of signals to the radio network controller, when an identifier of an exchange notified by an access restriction signal from the radio network controller matches an identifier of an exchange which has performed the location registration of the mobile station.

System and associated method of maintaining packet switching capability in a cellular network

A terminal device in the present invention includes a first authentication information transmitter configured to transmit first authentication information including a user ID to a relay device, a temporary ID storage configured to store a temporary ID issued by an authentication server receiving the first authentication information via the relay device, and a second authentication information transmitter configured to transmit second authentication information including the temporary ID and an authentication server ID for identifying the authentication server to the relay device.

Authentication method, terminal device, relay device and authentication server

A mobile station is configured to transmit a first location registration related signal addressed to a first exchange to a radio network controller, so as to perform location registration to both the first exchange and a second exchange, when operating in first network operation mode. The mobile station includes a controller configured to transmit a second location registration related signal addressed to the second exchange to the radio network controller, so as to perform the location registration to the second exchange without passing thorough the first exchange, when the mobile station operates in the first network operation mode and when the mobile station receives an access restriction signal for the first exchange from the radio network controller.

Mobile communication method and mobile station

A radio network controller connected to a first exchange and a second exchange which manage a same location registration area. The radio network controller includes a manager configured to manage a mobile station under control of the radio network controller, in association with the first exchange or the second exchange; a transfer configured to transfer a signal transmitted from the mobile station to the first exchange or the second exchange which is associated with the mobile station; and a monitor configured to monitor state of the first exchange and the second exchange. The transfer is configured to transfer a signal from the mobile station associated with the first exchange, to the second exchange, when the monitor detects inaccessibility to the first exchange.

Growing community of inventors

Yokohama, Japan

Katsuhiro Noguchi