Nec Corporation

Nec C Orporation

Masashi Shimoma

Satoshi Hasegawa

Toru Yamada

Masahiro Serizawa

Akira Kamei

Kyoji Hirata

Yumiko Okuyama

Hotaka Sugano

A multicast control device capable of reducing the distribution time of multicast data is provided. A multicast control device () according to the present disclosure includes a determination unit () configured to determine whether the number of communication terminals joining a multicast service exceeds a predetermined threshold, and a session control unit () configured to start a multicast session for a plurality of communication terminals joining the multicast service when it is determined that the number of communication terminals joining the multicast service exceeds the predetermined threshold.

Multicast control device, multicast control method, and non-transitory computer readable medium

An information processing apparatus that suppresses a power consumption problem in a relay terminal includes a first controller that controls an IoT device to perform multihop routing via at least one relay on an upload of data from the IoT device to a base station, and a second controller that controls the base station to use, on a down-link from the base station to the IoT device, a route different from a route that uses at least one relay.

Information processing apparatus, communication method, communication program, communication system, IoT device, and base station

Disclosed is an information processing apparatus for reducing the waste of power consumption in an IoT system, comprising a position information obtainer that periodically obtains position information of a data collection device, and position information of a relay device that relays communication between the data collection device and a base station, and a controller that controls measurement of a signal strength between the data collection device and the relay device, based on the position information of the data collection device and the position information of the relay device.

Information processing apparatus, information processing method, data collection device, and control method

A service control apparatus () according to the present disclosure includes: a communication unit () configured to receive a first communication pattern that defines a timing of communication between a service providing apparatus () and a communication terminal () from the service providing apparatus () and a second communication pattern that defines a timing of communication between a service providing apparatus () and the communication terminal () from the service providing apparatus (); and a controller () configured to determine whether the first communication pattern and the second communication pattern indicate communication timings different from each other. When the first communication pattern and the second communication pattern indicate communication timings different from each other, the communication unit () transmits a message to the second service providing apparatus () requesting it to change its communication pattern to the first communication pattern.

Service control apparatus, charging management server, service control method, charging information management method, and computer readable medium

The present invention addresses the problems of reduction of an operation guaranteed period and an operation failure of an entire system caused by the reduction of the operation guaranteed period or an operation stop of a specific device. The present invention includes a control unit that controls transmission of a triggering message to a terminal based on at least one of an identifier included in the triggering message for triggering the terminal and used to identify the terminal, and an identifier for identifying a group to which the terminal belongs.

Communication system, communication control apparatus, communication control method, and communication program

An object is to provide a policy control system that can easily change a policy. A policy control system according to the present invention includes a PCRF entity () including a policy control unit () for determining a policy to be applied to a group including a plurality of wireless terminals according to environmental information changed at a specified timing and a PCEF entity () including a policy control execution unit () for applying the policy determined by the policy control unit () to communication related to the plurality of wireless terminals included in the group.

Policy control system, PCRF entity, policy control method, and non-transitory computer readable medium

This invention provides a communication processing system that appropriately manages total power consumption in a cell managed by a base station. The communication processing system includes a communication terminal, a base station, a plurality of relay stations that relay communication between the communication terminal and the base station, first measurers in the plurality of relay stations that measure strengths of first signals received from the base station, a second measurer in the communication terminal that measures strengths of second signals received from the plurality of relay stations, and selects a communication path with a smallest difference between strengths of a first signal a second signal in a plurality of communication paths on which the base station, the plurality of relay stations and the communication terminal are connected.

Communication processing system, method, apparatus and control program, for optimizing power consumption

This invention provides a communication processing system that reduces the power consumption of a remote UE associated with measurement of a strength of a received signal. The communication processing system includes a communication terminal, a base station, relay stations that relay communication between the communication terminal and the base station, a measurer that measures, in the communication terminal, a strength of a signal received from one of the relay stations, and a controller that controls to reselect another of the relay stations if the measured strength of the received signal is smaller than a first threshold, and reduce a count of measuring the strength of the received signal by the measurer if the measured strength of the received signal is larger than the second threshold which is larger than the first threshold.

Communication processing system, communication processing method, communication processing apparatus, communication terminal, and control methods and control programs thereof

This invention provides a communication processing system that stably efficiently uses a resource in a cell managed by a base station. The communication processing system includes a communication terminal, a base station, a plurality of relay stations that relay communication between the communication terminal and the base station, a measurer in the communication terminal that measures strengths of received signals from the plurality of relay stations, and a selector in the base station that selects a relay station that connects the base station and the communication terminal, based on a comparison result of at least one capability of capabilities had by each of the plurality of relay stations, when there exist a plurality of relay stations whose strengths of received signals are more than a threshold.

Communication processing system, communication processing method, base station, and control method and control program thereof

The present disclosure aims to provide a base station, a radio relay station, a communication method, and a program capable of preventing communication from being unavailable when the base station is brought into a high load condition. A base station () configured to communicate with a communication terminal () through a radio relay station (), the base station () including: a control unit () configured to detect whether the own apparatus is in an overload condition exceeding a predetermined load; and a communication unit () configured to transmit, in order to cause the radio relay station () to connect to another base station that is not in an overload condition, information about the other base station to the radio relay station () when the control unit () detects that the own apparatus is in an overload condition.

Base station, radio relay station, and communication method for cancelling a connection to a base station during an overload condition

Base station, radio relay station, communication method for cancelling a connection to a base station during an overload condition

The present disclosure aims to provide a core node capable of reducing the number of messages or an amount of data to be transmitted to the core node. A core node () according to the present disclosure includes: a congestion state detector () configured to detect a congestion state of an own apparatus; a communication unit () configured to receive a NAS request message that has specified an APN from a radio terminal (); and a controller () configured to determine that processing regarding the NAS request message will not be executed while the congestion state of the own apparatus is being detected. The communication unit () transmits a reject message including a plurality of APNs that can be specified by the radio terminal () to the radio terminal () when it is determined in the controller () that the processing regarding the NAS request message will not be executed.

Core node, radio terminal, communication method, and non-transitory computer readable medium

To avoid congestion and an overload at the time of data transmission from an IoT device to a wireless network, at least one gateway apparatus is controlled to execute a gateway function at a first timing at a first position, collect data from a plurality of devices present near the first position, and transmit aggregated data to a base station, and to execute the gateway function at a second timing different from the first timing at a second position different from the first position, collect data from a plurality of devices present near the second position, and transmit aggregated data to the base station.

Gateway function collecting data from nearby devices at first and second positions and timings for transmission to a base station

The present invention addresses the issue of responding to a state in which operation has stopped as a result of high frequency triggering of a specified application either intentionally or as a result of a malfunction, etc. The present invention relates to communication system including: a monitoring unit that monitors the occurrence state of triggering messages on the basis of port number information identifying port numbers included in triggering messages that trigger a terminal; and a control unit that controls transmission of the triggering messages to the terminal, on the basis of the occurrence state.

Growing community of inventors

Tokyo, Japan

Masashi Shimoma