Nippon Telegraph and Telephone Corporation

Maiko Naya

Kenji Shimizu

Atsushi Taniguchi

Takahiro Yamazaki

Yohei Katayama

Takashi Shimizu

Masaru Miyamoto

Akira Nakayama

Masamichi Hosoda

Takayuki Yamada

A wireless terminal station device, a plurality of wireless base station devices, and a positioning request device are included, the wireless terminal station device makes a positioning request including identification information of its own device to the positioning request device via the wireless base station device to which the wireless terminal station device belongs among the plurality of wireless base station devices, the positioning request device receives the positioning request from the wireless terminal station device, specifies the wireless base station device to which the wireless terminal station device belongs on the basis of the identification information of the wireless terminal station device, transmits a positioning instruction and the identification information of the wireless terminal station device to the specified wireless base station device, and receives a result of positioning of the wireless terminal station device from the wireless base station device, and the wireless base station device performs positioning of the wireless terminal station device corresponding to the received identification information and transmits the result of the positioning to the positioning request device. Accordingly, it is possible to obtain agreement of an owner and perform positioning of a terminal device without installing hardware or an application for measuring a geographical position in the terminal device.

Positioning request method, positioning request device and positioning request program

A base station information DB () of a base station management apparatus () stores base station information that indicates wireless schemes that can be implemented by base stations (), scheduled periods for implementation of the wireless schemes, and coverage areas of the base stations () in which wireless terminals can be accommodated. A use base station selection unit () creates a list of base stations () that can cover an entirety or part of a coverage area of a failed base station, which is a base station () that has failed, with reference to the base station information, selects a base station () that can implement an implementation-scheduled wireless scheme, which is a wireless scheme that is scheduled to be implemented by the failed base station, during a scheduled implementation period, which is the scheduled period for implementation of the implementation-scheduled wireless scheme of the failed base station, from among the base stations () included in the list, and sets the selected base station () so as to provide the implementation-scheduled wireless scheme to the coverage area of the failed base station during the scheduled implementation period.

Base station management method, base station management apparatus and program

A communication control apparatus includes a communication parameter acquisition unit that acquires at least one second communication parameter that is a candidate for a first communication parameter indicating a communication parameter to be assigned to a communication apparatus and indicates a communication parameter suitable for regional characteristics indicating a communication environment in a region where the communication apparatus is installed, a setting file storage unit that stores a setting file corresponding to each second communication parameter, a setting file acquisition control unit that acquires the setting file and stores the acquired setting file in the setting file storage unit, and a communication parameter assignment unit that determines the first communication parameter from among the second communication parameters acquired by the communication parameter acquisition unit and assigns the determined first communication parameter to the communication apparatus.

Communication control device, communication control method and communication control system

A radio communication method executed by a control apparatus controlling a base station apparatus performing communication with a terminal in a predetermined region, and includes determining whether there is the terminal that is asynchronized in communication with the base station apparatus transmitting a synchronization signal, and controlling, in a case where it is determined that there is the asynchronized terminal, the base station apparatus to increase an allocation time of the synchronization signal in compliance with a radio scheme used by the asynchronized terminal or to shorten an allocation cycle of the synchronization signal.

Wireless communication method, control device, terminal and wireless communication system

A wireless communication method is executed by a wireless communication system including one or more wireless terminals and a wireless communication apparatus. The wireless communication apparatus generates wireless scheme schedule information, which is information related to a schedule of a slot allocated to an uplink signal and a downlink signal of a predetermined wireless scheme, generates a downlink signal to be transmitted in the slot to the wireless terminal based on the wireless scheme schedule information, and transmits a beacon signal including the wireless scheme schedule information in the slot. The wireless terminal receives the beacon signal, in the slot, acquires the wireless scheme schedule information from the beacon signal, and generates an uplink signal to be transmitted in the slot to the wireless communication apparatus, based on the wireless scheme schedule information.

Wireless communication method, wireless communication device and wireless communication system for slot allocation

An environmental information acquisition method is performed by an environmental information acquisition apparatus that acquires a measurement result of a radio wave environment. The environmental information acquisition method includes distributing software of each radio scheme to one or more base station apparatuses measuring a radio wave environment of the radio scheme based on the software of the radio scheme, instructing the one or more base station apparatuses to measure the radio wave environment, and acquiring the measurement result of the radio wave environment from the one or more base station apparatuses measuring based on the software the radio wave environment in multiple sections set across an area.

Environment information acquisition method, environment information acquisition apparatus and environment information acquisition system

There is provided a wireless communication method in a wireless communication system including a plurality of base station apparatuses, a plurality of wireless signal processing apparatuses configured to perform signal processing that corresponds to each of a plurality of wireless schemes, and a control apparatus configured to control a transmission timing of signals in the base station apparatus and the wireless signal processing apparatus, the method including: determining a combination of the base station apparatus and the wireless signal processing apparatus that perform communication at each predetermined time by the control apparatus such that there is less overlap in time to establish a communication path between the wireless signal processing apparatus and each of a plurality of base station apparatuses that use the same wireless signal processing apparatus, in which the base station apparatus and the wireless signal processing apparatus perform communication by switching a determined combination of the communication paths and any one or all of a radio frequency of each base station apparatus and a wireless bandwidth of each base station apparatus over time.

Wireless communication method, control device and wireless communication system

An access point management method for managing a plurality of access points capable of providing wireless communication services in accordance with a plurality of wireless standards to a radio terminal apparatus includes acquiring plural pieces of request information which are used for requesting providing of the wireless communication service and include information indicating an area in which the wireless communication service is provided, selecting the access point assigned to each wireless communication service, based on the area requested by the plural pieces of request information acquired and characteristics of a wireless standard provided in the wireless communication service, and transmitting a request signal for deploying the wireless communication service corresponding to the request information, to the access point selected.

Access point management method, access point management apparatus, and access point management system

This invention provides a radio communication method in a radio communication system including a base station apparatus and a radio signal processing apparatus for communicating with the base station apparatus, the radio communication method including granting radio control information that includes at least information specifying a radio scheme to be used as a parameter required for radio communication, to a packet and transmitting the packet from which the radio control information has been removed, by the radio scheme specified by the radio control information granted to the packet.

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Musashino, Japan

Maiko Naya