Fujitsu Corporation

Daisuke Nitta

Kazunari Kobayashi

Tomonori Kumagai

Yuki Shinada

Tetsuo Tomita

Satoshi Watanabe

Satoshi Yamamoto

Hiromitsu Kawai

Masanori Hashimoto

Takahiro Kawaguchi

Hitoshi Yokoyama

Hajime Hasegawa

Tatsuru Nakagaki

Noboru Hasegawa

Yutaka Hamada

Tadanori Yokosawa

Takeshi Masubuchi

Daisuke Inagaki

Masamitsu Komi

Hiroki Akiyama

A wireless access system in which a first operator and a second operator share a predetermined band, includes a first base station belonging to the first operator, the first base station configured to transmit broadcast information indicating a priority of the first operator in the predetermined band; and a second base station belonging to the second operator, the second base station configured to perform wireless communication using a band configured based on a priority of the second operator in the predetermined band and the broadcast information transmitted by the first base station.

Wireless access system

A base station apparatus including a plurality of communication units which communicate through a different plurality of communication channels with an upper layer apparatus of the base station apparatus, a base station information acquisition unit which acquires base station information relating to the state of the base station apparatus, a channel selection unit which selects any of the plurality of communication channels in accordance with base station information, and a channel switching unit which dynamically switches the channel which is used for transmission of traffic of the mobile station apparatus to a channel which is selected by the channel selection unit.

Base station apparatus, mobile station apparatus and circuit, and channel switching method

A management apparatus that identifies a candidate for improving communication quality in a wireless communication system including a base station and a mobile station, the management apparatus comprising: an obtainer that obtains measured communication quality information and positional information from the mobile station; a communication quality estimator that estimates a communication quality based on the positional information obtained from the mobile station; a communication path determiner that identifies a communication path using the estimated communication quality estimated and the measured communication quality information; and a communication quality improvement candidate determiner that identifies the candidate for improving communication quality related to the communication path determined, the candidate being based on communication quality. A method and a program for identifying a candidate for improving communication quality, an apparatus, a method, and a program for determining a communication path, and a wireless communication system are also provided.

Management apparatus and method for identifying candidate for improving communication quality; apparatus and method for identifying communication path; non-transitory computer-readable storage medium storing such programs; and wireless communication system

A base station apparatus including: a transmitter, and a processor to control the transmitter to transmit true area information when a given event is not detected, and to transmit false area information when the given event is detected. A wireless communication system including: a mobile station apparatus; and a base station apparatus to transmit true area information to the mobile station when a given event is not detected, and to transmit false area information to the mobile station when the given event is detected.

Base station apparatus, wireless communication system, and wireless communication method

A positioning device includes: a receiving unit configured to receive wireless quality information indicating wireless quality between a mobile station and a base station and information indicating a direction and an orientation of the mobile station; a determining unit configured to acquire measuring data to be used for measuring a location of the mobile station based on the direction and the orientation, from data in which each of regions as location candidates of the mobile station is associated with respective wireless quality information; and a measuring unit configured to measure the location of the mobile station based on the wireless quality information and the measuring data.

Positioning device, mobile station and positioning method

A communication control apparatus includes an acquirer that acquires operation information of a moving object having a shielded space therein, and a controller that controls at least one of a channel between a first base station installed in a car in the moving object and a second base station installed on each floor where the car is stoppable, transmission power of the first base station and transmission power of the second base station, and location information for locating a position of a mobile terminal for each floor where the car is stoppable, on the basis of the operation information.

Communication control apparatus and communication control method

The communication apparatus includes an IF that receives positioning information of a mobile user terminal from the mobile user terminal which is able to communicate by using at least one wireless communication scheme; and a controller that detects one or more communicable areas that allow communication by using the at least one wireless communication scheme, by determining which area includes a position indicated by the positioning information among a plurality of areas.

Communication apparatus, method for communication, wireless communication system, wireless base station, and mobile user terminal

In a communication system, an upper-level carrier has communication functions for both first and second sessions. A first communication unit communicates with the upper-level carrier through a first communication session established therewith. A second communication unit communicates with the upper-level carrier through a second communication session established therewith. A communication control unit controls the first and second communication units. The communication control unit disconnects the first communication session and directs a signal intended for the first communication session to the second communication session, so that the signal is delivered to the upper-level carrier by using the second communication session as a detour.

Communications system, base station apparatus, and communication method

A base station accommodating a user terminal may include a user data management database configured to store user data, a security managing part configured to manage groups to which the user data are open, and a user data managing part configured to manage the user data. When the user data managing part receives a request to send user data from a Web application server and a group, included in the request and to which the requested user data are open, is included within the groups managed by the security managing part, the user data managing part may send the requested user data to the Web application server.

Base station, web application server, system, and method

A communication apparatus comprises a processing information acquiring unit to acquire a processing delay time, a transmission information acquiring unit to acquire each transmission delay time, a collecting unit to collect each arrival time from nodes onward from each of the subordinated nodes, a calculating unit to calculate the time after distribution data is received by the self-node until it arrives at each of the terminals as the arrival time from the home node onward for each of the nodes through which the distribution data is routed based on the processing delay time, the transmission delay times, and each the arrival time from the node onward, and a transmission control unit to control the transmission timing of the distribution data to at least one of the nodes based on the arrival times from the home node onward for each of the nodes.

Communication apparatus, base station apparatus and data reception timing synchronizing method

An algorithm in a multi-core processor having a plurality of cores for deciding processing allocation to each core to distribute the processing load thereof, and an efficient processing allocation algorithm simplified for software engineers are established. In order to achieve the above processing load distribution, the multi-core processor includes a plurality of basic modules divided into minimum configuration units, each having a uniform input/output format interface, so as to perform required processing contents in the overall processor. As an initial allocation, the above plurality of basic modules are allocated in distribution to the above plurality of cores, and subsequently, based on functional information of each core, the above plurality of initially allocated basic modules are relocated either periodically or at appropriate timing.

Multi-core processor

To provide a technique of making it possible to shorten a time taken by channel switching. Further, to provide a technique of enabling simplification of a channel switching procedure. A radio network controller for assigning, to each wireless terminal connected to a wireless network, one of an individual channel exclusively used by the wireless terminal and a common channel shared with at least one wireless terminal different from the wireless terminal as a communication channel, includes: a determination portion for determining that an individual channel is to be assigned to a wireless terminal; and an assignment portion for, when the assignment of the individual channel has been determined, assigning an individual channel resource secured and held before the determination to the wireless terminal.

Radio network controller and channel assignment method of simplifying and curtailing the channel switching time

A controller which is assigned with the wireless resources for a plurality of wireless zones and a plurality of wireless base stations communicably connected to the controller, wherein the controller is operable to assign a part of the assigned wireless resources to the wireless zone formed by any of the wireless base stations. According to this, it is possible to introduce and run a great number of wireless base stations at a low cost without increasing or modifying the number of the superordinate devices such as RNC.

Wireless communication system and method of assigning wireless resources in the same system and controller

A base station accommodation method and mobile communication system which allows the installation of many micro-miniature BTS devices are provided. The mobile communication system includes a plurality of base stations which accommodate a plurality of mobile terminals respectively; a plurality of first base station control devices, each of which accommodates a predetermined number of base stations out of the plurality of base stations; and a second base station control device which accommodates the plurality of first base station control devices, wherein each of the plurality of first base station control devices comprises, for supporting information identifying a mobile terminal, a mobile terminal data base to store identification information which identifies a base station to which the mobile terminal is subordinate, and a station data base to store an address of the base station.

Mobile communication system

A mobile terminal includes a reception unit to receive, from at least one of a plurality of communication systems, an initial beacon containing information for establishing communication according to each of the plurality of communication methods, a request unit to generate a request by use of the initial beacon to transmit the request to the at least one of the plurality of communication systems, and a determination unit to determine, based on information as a response to the request, the communication method and the frequency band, which are to be used in a time zone by the mobile terminal.

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Kawasaki, Japan

Daisuke Nitta