Mitsubishi Electric Corporation

Tcl Communication Technology Holdings Limited

Mitsubishi Electronic Corporation

Coranci, LLC

Yasushi Iwane

Miho Maeda

Mitsuru Mochizuki

Taisei Suemitsu

Taiga Saegusa

Yuji Kakehi

Masayuki Nakazawa

Takayuki Nonami

Noriyuki Fukui

Shigenori Tani

Michiaki Takano

Keiko Tada

Tetsuya Mishuku

Ryoichi Fujie

Yuichi Nakai

Masaaki Kusano

Akira Okubo

Keisuke Ozaki

Hitoshi Kimura

Shinsuke Uga

Mituru Mochizuki

A mobile terminaljudges whether or not the mobile terminal is able to make a transition to a DTX period during Active, and, when judging that the mobile terminal is able to make a transition to a DTX period during Active, notifies a base stationto that effect. If the base stationjudges that the mobile terminal is able to make a transition to a DRX period during Active when triggered by the notification from the mobile terminal, the base station temporarily stops supply of electric power to the data transmission processing units and the data reception processing units of the mobile terminal

Mobile communications system and mobile terminal

A communication system includes a communication terminal device, a base station device performing radio communication with the communication terminal device, and a base station controller controlling the base station device. The communication terminal device is a machine type communication (MTC) device, The base station controller includes a mobility management entity (MME). Data is transmitted to the MME from the communication terminal device via the base station device.

Communication system

The present invention has an object to provide a communication system capable of avoiding congestion in downlink communication or uplink communication and a shortage of radio resources arising therefrom. In the present invention, in a communication system including a normal user equipment (normal UE) that performs human to human communication and a machine type communication device (MTCD) that performs machine to machine communication, a base station device transmits a paging message to the normal UE and the MTCD for calling the normal UE and the MTCD. The paging message contains, for example, an equipment identity (UE-ID). A maximum number of equipment identities (UE-IDs) that can be accommodated within this paging message is set individually for the normal UE and the MTCD. Alternatively, the paging message contains a calling indicator in place of the equipment identity of the MTCD (UE-ID of MTCD).

Mobile communication system, base station, communication terminal device and MTC device

In a mobile communication system according to the present invention, with the separate use of a plurality of component carriers or with the use of a carrier set including the plurality of component carriers aggregated, a base station performs radio communication with a user equipment corresponding to the component carrier or a user equipment corresponding to the aggregated carriers. In particular, in a case where the base station performs radio communication with the user equipment corresponding to the aggregated carriers with the use of the aggregated carriers, each of a plurality of transport blocks created by dividing a transport channel is transmitted per each of the plurality of component carriers constituting the aggregated carriers, and control information related to radio communication between the base station and the user equipment corresponding to the aggregated carriers is transmitted such that physical information of the corresponding component carrier is identifiable. Accordingly, communication control is performed efficiently while improving a communication speed correspondingly to the aggregated carriers.

Mobile communication system

A mobile communication system capable of easily notifying the interference-related information and avoiding interference in a situation in which a macro cell and local nodes are deployed to coexist. In the system, a macro cell (eNB) notifies, via user equipments (UEs) present in a coverage, HeNBs present in the coverage of the interference-related information related to the interference to a physical resource to be used, for example, a high interference indication (HII) and an overload indicator (OI).

Mobile communication system, mobile terminal and base station

A closed subscriber group (CSG) cell is a cell that allows use of subscribers. In order to receive the service by the CSG cell, a CSG-ID is required to be notified to a user equipment, which cannot be obtained in a situation outside the reach of radio waves from a non-CSG cell. In a mobile communication system including base stations respectively provided to a CSG cell and a non-CSG cell in which access is made to the CSG cell with the use of a CSG-ID issued in a case where use of the CSG cell is allowed, the base station provided in the CSG cell refers to the notified identification information of a user equipment and then transmits a tracking area update request from the user equipment to a core network, and the core network determines whether the user equipment is allowed to use the CSG cell and, in the case where the use is allowed, transmits a signal for allowing assignment of radio resources to the user equipment and the CSG-ID. The user equipment accesses the CSG cell with the use of the CSG-ID.

In a mobile communication system according to the present invention, with the separate use of a plurality of component carriers or with the use of a carrier set including the plurality of component carriers aggregated, a base station performs radio communication with a user equipment corresponding to the component carrier or a user equipment corresponding to the aggregated carriers. In particular, in a case where the base station performs radio communication with the user equipment corresponding to the aggregated carriers with the use of the aggregated carriers, each of a plurality of transport blocks created by dividing a transport channel is transmitted per each of the plurality of component carriers constituting the aggregated carriers, and control information related to radio communication between the base station and the user equipment corresponding to the aggregated carriers is transmitted such that physical information of the corresponding component carrier is identifiable.

A mobile communication system capable of reducing energy consumption of a network node in a local area range. When judging that there is a shift trigger, a local eNB shifts from a normal operation to an energy saving operation. In the energy saving operation, the local eNB stops the operation of transmitting at least a part of downlink transmission signals to be transmitted to a user equipment (UE) and performs the operation of receiving an uplink transmission signal transmitted from the UE. When judging that it has received the uplink transmission signal (RACH) in the energy saving operation, the local eNB shifts to the normal operation.

Communication system, base station and mobile terminal

Communication system, terminal device and base station for machine type communication

A cellconfigured by only a DL CCbeing a resource for downlink is configured. The celldoes not include a resource for uplink, that is, a UL CC to be associated with the DL CCby a DL/UL link. The link information indicating the above is notified a communication terminal device by a base station device using the DL CC. A DL CCand a UL CC constitute a cell. The downlink communication from the base station device to the communication terminal device is performed using the celland the cell, and the uplink communication from the communication terminal device to the base station device is performed using the cell

Communication terminal device

There is a problem that when a closed subscriber group (CSG) cell available to subscribers is installed in a macro cell area, communication cannot be performed due to the interference between a macro cell and the CSG cell in an area thereof. The CSG cell that is provided in the CSG cell area and transmits a downlink synchronization signal using a radio frame assigns control signals to a first subframe and a second subframe among a plurality of subframes constituting the radio frame, and the macro cell that is provided in the macro cell area and transmits a downlink synchronization signal using the radio frame assigns control signals to a third subframe and a fourth subframe, which are shifted from the first subframe and the second subframe by a predetermined number of subframes, respectively, among the plurality of subframes constituting the radio wave, the CSG cell and the macro cell being configured to perform transmission in synchronization with each other.

A cellconfigured by only a DL CCbeing a resource for downlink is configured. The celldoes not include a resource for uplink, that is, a UL CC to be associated with the DL CCby a DL/UL link. The link information indicating the above is notified a communication terminal device by a base station device using the DL CC. A DL CCand a UL CCconstitute a cell. The downlink communication from the base station device to the communication terminal device is performed using the celland the cell, and the uplink communication from the communication terminal device to the base station device is performed using the cell

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Tokyo, Japan

Yasushi Iwane