Ntt Docomo, Inc.

Nec Corporation

Ntt Mobile Communications Network, Inc.

Masahiro Sawada

Masami Yabusaki

Takeshi Ihara

Yugo Watanabe

Masumi Fujiwara

Kouji Sasada

Toshiyuki Tamura

Keisuke Suzuki

Motoshi Tamura

Shinichi Isobe

Itsuma Tanaka

Yasuo Maruyama

Shoichi Hirata

Takatoshi Okagawa

Akimichi Tanabe

Atsushi Iwasaki

Tomoki Shibahara

Jun Kakishima

Hiroaki Amada

Even if a failure has occurred in core network equipment in a state in which bearers are established between a large number of UEs and a packet data network, congestion in the network is avoided. A mobile communication method according to the present invention includes steps of transmitting, by an MME, to transmit a 'PDN Disconnection Request/Detach Request' including barring time to a UE when the MME disconnects a bearer between the UE and the packet data network due to a predetermined reason such as a failure in a S-GW/P-GW or the MME in a state in which the bearer is established, and barring, by the UE, a mobile originating call directed to the packet data network for the barring time.

Mobile communication method, mobility management node, packet switch, and mobile station

In an information providing system, a user inputs desired mobile ID number to a client terminal. The client terminal transmits a request for location information on the mobile station including the mobile ID number to a location server via a location information server. The location server transmits a request for object movement information corresponding to the mobile station to an object information server. The location information server obtains the information from a traffic control device. Location information on the mobile station obtained by the location information server is transmitted to the terminal.

Method and system for location management and location information providing system

A mobile communication method for performing communications between an originating terminal and a terminating terminal through a radio access network and a core network, includes: sending a bearer setup request, in the originating terminal, to a first session control device controlling a location area of the originating terminal, the bearer setup request requesting to set a bearer for the communications between the originating terminal and the terminating terminal; and performing a process of sending a communication start request for the terminating terminal in response to the bearer setup request in parallel with a process of commanding a bearer setup device to set the bearer, in the first session control device.

Mobile communication method, mobile communication system, session control device and originating terminal

A network control system, which controls connections between a mobile terminal and multiple types of wireless systems accommodated in a network, includes a prescribed node provided on the network. The node comprises signal transmitting/receiving means that transmits and receives a control signal defined by each of the wireless systems, protocol converting means that converts the control signal to a common protocol independent of each of the wireless systems, and entity communication controlling means that communicates with multiple functional entities provided on the network, using the common protocol, to implement network control.

System and method for controlling network, network controlling apparatus, and mobile terminal used in network control system

A mobile communications system is disclosed that includes a first local routing manager (LRM) providing a first network in which a mobile terminal is currently located, a second local routing manager (LRM) providing a second network in which a counterpart terminal communicating with the mobile terminal is currently located, and a home routing manager (HRM) managing correspondence between the unique home address of the counterpart terminal and the second network. The first LRM has a controller that acquires address information of the counterpart terminal from the second LRM, via the HRM, when the first LRM does not have the address information, and communication means that transmits the address information of the counterpart terminal to a router of a new cell in the first network when the mobile terminal moves into the new cell.

Mobile communications system and routing management apparatus used in the mobile communications system

A mobility control apparatus comprises: a mobility control unit configured to perform a first processing in accordance with movement of a mobile communication terminal and generate a notification related to the first processing; a processing unit configured to perform a second processing different from the first processing performed by the mobility control unit, based on the notification; and a notification providing unit configured to obtain the notification from the mobility control unit and provide the notification to the processing unit. Moreover, the mobility control apparatus comprises: an instruction unit configured to generate a command to a mobility control unit performing processing in accordance with movement of a mobile communication terminal; a command providing unit configured to obtain the command from the instruction unit and provide the command to the mobility control unit; and the mobility control unit configured to perform the processing based on the command.

Mobility control apparatus, mobile communication terminal and mobile communication system

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.

Method of registering position of mobile communication terminal, general calling method for mobile communication terminal and mobile communication system

Location registration method for mobile communication terminals, en bloc paging method for mobile communication terminals, and mobile communication system

A transcoder of a switching node MSC of a core network is inserted into a connection call of a transcoder-free-operation on the basis of an answer from a switching node RNC of a radio access network against an inquiry about a setting information of transcoder performed by the switching node MSC in a user layer of a Iu interface to insert a tone signal, etc., into the connection call of transcoder-free-operation. The insertion of transcoder into a connection call of a transcoder-free-operation can be executed without performing a re-initializing procedure.

Communication system, communication method and switching node

To provide a transfer control system that allows a call to be retransferred by a command from a source communication terminal and is capable of improving the convenience of a user issuing the command. In-communication information describing that a second terminal and a third terminal are now in communication with each other after a call is transferred in a state where a first terminal and the second terminal are in communication with each other is stored in a call state storage device. When a retransfer command is issued by the first terminal, the call is transferred to a fourth terminal by referring to the in-communication information stored in the call state storage device, thereby establishing communication between the second terminal and the fourth terminal.

System and method for controlling transfer

To register current codec types of a mobile station with a network side, the mobile station notifies, when it conducts the location registration or a mobile user replaces his or her old mobile station, a visitor location switching system which is associated with the current location of the mobile station, of the codec types supported by the mobile station using a mobile communication control signal between the mobile station and the mobile network. Receiving the notification, the visitor location switching system enters the update of the codec types into a location register in a memory home station that controls the mobile network The codec types can be thus registered into the mobile network using the mobile communication control signal. Since the mobile network can always acquire the latest codec types for the mobile station, the discrepancy is canceled between the codecs the mobile station supports and the codecs the network registers.

Growing community of inventors

Yokohama, Japan

Masahiro Sawada