Nec Corporation

Nec C Orporation

Tomu Tamura

Hisashi Futaki

Toshiyuki Tamura

Yoshio Ueda

Sadafuku Hayashi

Yoshikazu Kakura

Atsushi Nakata

In order to prevent deterioration of QoE of a user in intersystem handover, an apparatus according to the present invention includes: an information obtaining unit configured to obtain network slice related information related to a network slice used by a terminal apparatus in a first radio communication system; and a first communication processing unit configured to transmit, to a second network node of a second radio communication system, a message for intersystem handover of the terminal apparatus from the first radio communication system to the second radio communication system, the message including the network slice related information.

Network node, communication method, program, and recording medium

In order to make a slice that is being used by or available for a terminal apparatus, available even at a handover destination or a cell reselection destination, a first base stationincludes: an obtaining sectionconfigured to obtain information related to usage status of a slice provided by the first base station; and a transmission processing sectionconfigured to transmit the information related to the usage status of the slice.

First base station, second base station, terminal apparatus, method, program, and recording medium

In order to make it possible to appropriately select a secondary base station in a case of establishing dual connectivity after a handover, a base stationincludes: a memory storing instructions; and one or more processors configured to execute the instructions to: communicate with a terminal apparatusin accordance with a first radio access technology; obtain handover result information related to results of handovers from the base stationto other base stations, and; and transmit, when the terminal apparatusperforms a handover from the base stationto a base stationcommunicating in accordance with a second radio access technology, the handover result information to the base station

First base station, second base station, and method

To acquire, by a core network node, information necessary for control of a fixed broadband access network in more cases. An apparatus according to the present disclosure includes a communication processing unit configured to transmit, to a core network node, a first message when a wireless communication apparatus that communicates with a terminal apparatus communicating with a base station is changed from a first wireless communication apparatus to a second wireless communication apparatus, the first message including address information of the second wireless communication apparatus and transport identification information of the second wireless communication apparatus.

Apparatus relating to control of fixed broadband access network

A base station includes a storage unit stores a neighbour relation table and a processing unit. The processing unit receives service information of a neighbour cell to its own cell, the service information being transmitted by another base station forming the neighbour cell to the own cell, the service information including at least one of an information element indicating whether the another base station has a function of a wireless LAN (Local Area Network) base station and an information element indicating whether the neighbour cell is a cell for dynamically adding a communication capacity. The processing unit registers the service information of the neighbour cell with the neighbour relation table.

Method and base station for cell splitting in a wireless communication network

A wireless base station includes: a communication unitconfigured to communicate with a mobile station which measures radio quality of a signal transmitted in each of a plurality of cells; an acquisition unitconfigured to acquire load information related to a load of a network including a wireless base station forming the cell; and a control unit. The control unitreceives information indicating a measurement result of the radio quality of the signal transmitted in each of the plurality of cells and a state of a battery of the mobile station, from the mobile station via the communication unit, determines a signal, radio quality of which is to be measured by the mobile station, based on the measurement results of the radio qualities and the state of the battery of the mobile station, indicated in the information received, and the load information acquired by the acquisition unit, and notifies the signal determined to be measured to the mobile station via the communication unit.

Wireless base station, mobile station, wireless communication system, control method for wireless base station, and recording medium

A gateway device () according to the present invention includes a memory () that stores information regarding an environment around a radio base station; a controller () that generates a message for paging a mobile station which camps on the radio base station to execute processing for determining information of a radio base station to which the message is transmitted based on the stored information; and a transmission unit () that transmits the message. Paging optimization is thus achieved by reducing the number of paging messages.

Gateway device, mobile communication system, and paging method

An increase in communication load in a network due to increasing messages for requesting information is suppressed. When a message for requesting information and a response message thereto are sent and received between a communication device (N-Nn) that is an information requester and an information provider (Nx) on a network (NW) via a communication device (), the communication device () stores the information acquired from the response message in a response information storage section (), and when any communication device requests at least part of the same information, a control section () creates a response message including the requested information and responds.

Communication system, gateway device, and communication control method

A radio base station is provided including a controller that generates a message including identification information of the radio base station and information indicating parameters based on a detected environment. The radio base station also includes a transmitter that transmits the generated message to a communication node.

Radio base station, communication node, control method for radio base station and control method for communication node

A gateway communicating with a base station, includes a receiver that receives an incoming message including identification information of the base station and one or more parameters indicating an environment of the base station. The gateway also includes a memory that stores correspondence information including a cell identifier in association with at least one of the received identification information and the received one or more parameters. The gateway also includes a controller that determines the cell identifier, corresponding to a cell of the base station, based on the correspondence information and the incoming message, and generates an outgoing message, including the determined cell identifier, to be sent to a core network device. The gateway also includes a transmitter adapted to transmit the outgoing message.

Mobile communications system, gateway, method of controlling gateway, and computer readable medium therefor

A mobile communication system according to the present invention that can provide a mobile communication system capable of reducing power consumption by a radio base station apparatus includes a radio base station apparatus () that communicates with a mobile terminal (), a location information management apparatus () that acquires location information of the mobile terminal (), and a processing apparatus () that changes an operation state so that the radio base station apparatus () does not emit radio waves based on changes in the location information of the mobile terminal () acquired by the location information management apparatus (). When the mobile terminal () moves from a position within a service area of the radio base station apparatus () to a position outside the service area, for example, the processing apparatus () changes the operation state so that the radio base station apparatus () does not emit radio waves.

Mobile communication system, method of controlling the same, and radio base station apparatus

A gateway device connects a base station to a core network. The gateway device has a communication unit that receives, from a mobile management server in the core network, a key that cancels ciphering that was set in an NAS message that was received from a terminal that is subordinate to the base station.

Gateway device, base station, mobile management server, and communication method

A mobile communication system according to the present invention capable of efficiently reducing power consumption of a radio base station apparatus includes a radio base station apparatusfor performing communication with a mobile terminal, a location information management apparatusfor acquiring location information of the mobile terminal, and a processing apparatusfor changing an operation state of the radio base station apparatusby changing at least one of intensity, type, and cycle of radio waves emitted from the radio base station apparatusor by setting the radio base station apparatusin such a way that the radio base station apparatusdoes not emit radio waves based on the location information of the mobile terminalacquired by the location information management apparatus

Growing community of inventors

Tokyo, Japan

Tomu Tamura