Ntt Docomo, Inc.

Itsuma Tanaka

Keisuke Suzuki

Masashi Kanauchi

Wuri Andarmawanti Hapsari

Mikio Iwamura

Shinya Takeda

Takashi Koshimizu

Kenichiro Aoyagi

Yasuhiro Kato

Katsutoshi Nishida

Akimichi Tanabe

Hiromi Himeno

Tomoki Shibahara

Hideyuki Sakuramoto

Aki Ohashi

Zhen Miao

Hideaki Takahashi

Minami Ishii

Irfan Ali

Alf Zugenmaier

Takashi Morita

Atsushi Ueki

Takatoshi Okagawa

Tadashi Uchiyama

Takehiro Ida

Masahiro Sawada

Kota Fujimura

Shin-Ichi Isobe

Kazuo Sugiyama

Hiroshi Obata

Kenichi Katayama

Keiji Machida

Masaki Machimoto

Daisuke Fujishima

Masato Aso

Kenta Oonishi

Yuusuke Okazaki

Masato Tachiki

Kazuki Takita

Iwamura Mikio

An object is to provide a mobile station, a mobile communication system, and a network device that can realize more appropriate call origination control per service as intended by an operator. An MMTEL function unit () of a UE (), based on ssac-BarringForMMTEL-Voice, upon determining that call origination of a VoLTE call is possible, transmits Bearer Request to an NAS function unit (). The NAS function unit (), in accordance with the Bearer Request, transmits Service Request to an RRC function unit (). The RRC function unit (), in accordance with the Service Request, based on ac-BarringForMO-Data or Tbarring, transmits RRC Connection Request to a mobile communication network () without determining a possibility of call origination of the VoLTE call.

Mobile station, mobile communication system, and network device

In a communication system, an IN-CSEmaps and retains a public IP address acquired from an MTC-UEand an UE-ID, and receives an incoming message addressed to the MTC-UEfrom an ASA. The IN-CSE, upon receiving the incoming message, sets the public IP address mapped with the retained UE-ID in a destination address, and delivers to a GGSN/PGWan IP packet containing the corresponding UE-ID. The GGSN/PGWidentifies a private IP address assigned to the MTC-UE, based on the UE-ID included in the IP packet received from the IN-CSE

Communication system, service control device, MTC user device, gateway device, and communication method

The invention provides a mobile communication system, a network node, and a mobile communication method, which can cause user equipment of a particular type to attach to a dedicated network regardless of whether or not the user equipment supports a low access priority indicator (LAPI). An MME () acquires subscriber information on UE () from an HSS () based on an attachment request from the UE () forwarded by an eNB (), the subscriber information including availability for the UE () to use the dedicated network, and sends the eNB () a selection instruction to select the dedicated network based on the acquired subscriber information. When the eNB () receives the selection instruction from the MME (), the eNB () determines a dedicated MME (D) constituting the dedicated network, and transmits the attachment request from the UE () to the determined dedicated MME (D).

Mobile communication system, network node, and mobile communication method

A user apparatus for use in a mobile communication network that supports a plurality of radio access technologies, including: a reception unit configured, when an origination request transmitted to the mobile communication network from the user apparatus that uses a first radio access technology is rejected, to receive an origination rejection signal including a timer value and an operation instruction from the mobile communication network; and an operation control unit configured to perform inhibition of re-origination based on the timer value included in the origination rejection signal that is received by the reception unit, wherein, in a case where the user apparatus changes a using radio access technology from the first radio access technology to a second radio access technology, the operation control unit determines whether to inhibit re-origination based on the operation instruction included in the origination rejection signal.

User apparatus, communication control apparatus, and origination rejection control method

A P-CSCF () includes a terminating call processing unit () which receives SIP INVITE from an S-CSCF. The SIP INVITE includes an identifier of UE, and is relayed in response to acceptance of a terminating call to the UE. The P-CSCF () further includes: a restoration execution unit () which executes restoration of a subscriber profile linked with the UE based on reception of the SIP INVITE; and an address holding unit () which holds an address of a PCRF included in a response received from a DRA along with the execution of the restoration. The restoration execution unit reestablishes a session between the UE and the PCRF based on the held address of the PCRF, and causes the UE to execute re-registration with an IP multimedia subsystem.

IP multimedia subsystem, proxy session control apparatus, and communication control method

To provide restriction control independently from the packet call and the voice call. A mobile station UE according to the present invention is configured to perform SSAC for determining whether or not to permit transmission of an IMS-related originating signal according to a SSAC restriction information broadcasted. IMS functionis configured to notify NS functionof an originating request containing an identifier indicating the IMS-related originating signal, when determining to permit transmission of the IMS-related originating signal. The NAS functionis configured to notify AS functionof the originating request containing the identifier indicating the IMS-related originating signal. The AS functionis configured not to perform ACB for determining whether or not to permit transmission of the INS-related originating signal, in response to the notified originating request containing the identifier.

Mobile station

A UE (A) includes an application control information holding unit () configured to hold application control information at least including identification information of an application () to be restricted or permitted to perform communications among the multiple applications (); a restriction instruction reception unit () configured to receive, via a radio base station, a communication restriction instruction to control communications of the application () to be restricted or permitted to perform communications among the multiple applications (); and a restriction instruction notification unit () configured to notify an upper layer, which is configured to implement communications with the application (), of reception of the communication restriction instruction based on the communication restriction instruction received by the restriction instruction reception unit ().

Mobile communication system, network apparatus, mobile station, and mobile communication method

A user is easily informed of applications to be restricted easily when restriction processing on per application basis is being carried out. A mobile station according to the present invention includes: a storage unit configured to store one or more applications executable on the mobile station; a display unit configured to display an icon for each application on a display; and a determination unit configured to determine an application to be restricted based on SSAC information or ACDC information. The display unit is configured to use different display methods between the icon for the application to be restricted and the icon for the application other than the application to be restricted.

A mobile station and a mobile communication method are provided, which are, if being able to output a local ringing tone and a NW-provided ringing tone, capable of continuing a ringing tone outputted before a transition from LTE to 3G by aSRVCC even after the transition is made. A UE (A) executes continuation processing (aSRVCC) of a 3G voice communication service if the mobile station makes a transition of the connection destination from LTE to 3G during an alert period when the other party in the voice communication service is being alerted. Further, the UE (A) outputs a NW-provided ringing tone without outputting a local ringing tone based on data stored in the mobile station after making a transition to a second radio access system if aSRVCC is executed during a period when the NW-provided ringing tone is being outputted.

Mobile station and mobile communication method

Provided are a communication system, a mobile station and a communication method that can suppress the increase of processing loads of an IP-CAN accompanying trials made by mobile stations to connect to the IP-CAN via a wireless access network that does not support any services on the IP multimedia core network subsystem (IMS). For example, a UE () receives, from an SGSN via the 3G, service non-supporting information indicating that the 3G does not support any services on the IP multimedia subsystem, and, when having received the service non-supporting information, stops the transmission of an Activate PDP Context Request via the 3G.

Communication system, mobile station and communication method

The invention provides a mobile communication system, a mobile station, a call control device, and a mobile communication method that are capable of allowing an emergency call, even to which a prefix indicating how to treat the emergency call is added, to break through access control, and applying priority control to the emergency call, as in the case of a normal emergency call without the addition of the prefix. UE () separates acquired calling number information into a prefix and a calling number, and sends an MSC () an Emergency Setup which includes the prefix and an Emergency Category linked with the calling number. The MSC () determines how to treat the emergency call (such as to block notification of a telephone number of a calling party) based on the prefix included in the Emergency Setup, and connects the emergency call to a PSAP () corresponding to the Emergency Category.

Mobile communication system, mobile station, call control device, and mobile communication method

A mobile station and a mobile communication method are provided, which are capable of continuing output of an announcement sound even if a transition is made from LTE to 3G by SRVCC when the announcement sound is being received from a network side in response to a call request to a call-terminating terminal. A UEA executes continuation processing (SRVCC) of a 3G voice communication service if the mobile station makes a transition of a connection destination from LTE to 3G. Further, the UEA receives the announcement sound via LTE or 3G, and outputs the announcement sound after requesting alerting of the other party and before starting the alerting of the other party. The UEA outputs the announcement sound even after making a transition to 3G if the continuation processing of the voice communication service is executed during a period when the announcement sound is being outputted.

Location information of a mobile communication terminal is registered promptly. When the mobile communication terminal receives a first location registration response signal, in which a predefined value indicative of a cause of rejecting the registration of the location information is set, the mobile communication terminal transmits a location registration request signal to a second mobile communication network when there is the second mobile communication network over which the mobile communication terminal can communicate, based on the predefined value. When it is determined that there is not the second mobile communication network or the location registration of the mobile communication terminal in the second mobile communication network is not completed, the mobile communication terminal carries out a first location registration operation of retransmitting the location registration request signal to the first mobile communication network.

Location information registration method and mobile communication terminal

Provided are a communication control device by which a situation where a mobile station is disabled to receive a terminating call can be prevented from continuing for a long time, even when the IP-CAN bearer is removed for some reason. A P-CSCFexecutes the steps of: detecting a state of the IP-CAN Bearer; transmitting a 503 Service Unavailable, rejecting a terminating call to an UE, to a source making the terminating call when loss of the IP-CAN Bearer which has been established is detected; and canceling the transmission of the rejection response when receiving a signal from the UEin a situation where the loss of the IP-CAN bearer is detected, the signal being related to an originating call to the IP multimedia subsystem and being a signal other than registration to the IP multimedia subsystem.

Communication control device and communication control method

A mobile station UE according to the present invention includes a control unitthat is configured not to transmit 'RRC Connection Request' to a predetermined network when recognizing that the predetermined network is incompatible with an MTC function based on signaling from the predetermined network.

Growing community of inventors

Tokyo, Japan

Itsuma Tanaka