Fujitsu Corporation

Masato Katori

Tetsuo Tomita

Teruyoshi Watanabe

Toshiharu Kawanishi

Makoto Ueno

Mitsuhiro Tani

Motoyuki Tanaka

Danasiri Wijedasa Dewagamage

Kengo Kawamura

Masao Ootsuka

Tomohiro Tsuda

Hideyuki Yahata

A relay device configured to be coupled to a control device, the control device storing first information indicating a position and second information indicating a characteristic of a wireless device which is to be coupled to the control device, the relay device includes a memory, and a processor coupled to the memory and configured to receive, from the wireless device, device information including performance of the wireless device and installment information including a position where the wireless device is located, transmit to the control device the device information and the installment information, receive a response from the control device when the position where the wireless device is located satisfies the first information and the performance of the wireless device satisfies the second information, and establish a communication link between the wireless device and the control device, after receiving the response from the control device.

Relay device, communication system and communication method

A base station apparatus, includes: a processor; and a memory that stores a communication controlling program to be executed by the processor, wherein the processor is operable, based on the communication controlling program, to: receive a first call connection request transmitted from a terminal apparatus; compare a pattern including values of a plurality of parameters extracted from the first call connection request with a characteristic pattern of a second call connection request based on application communication; and perform, when the pattern of the first call connection request and the characteristic pattern coincide with each other, a transmission process to a different apparatus in accordance with the first call connection request after a delay time elapses from a reception timing of the first call connection request.

Base station apparatus, communication controlling method and communication system

The base station includes a first assigning unit and a second assigning unit. The first assigning unit, in execution of first communication using a single cell of the base station with the terminal, assigns, to the terminal, a first identification number as an identification number associated uniquely with the single cell from a predetermined number of identification numbers for identifying terminals. The second assigning unit, in execution of second communication simultaneously using a plurality of cells with the terminal, assigns, to the terminal, a second identification number as an identification number associated commonly with the plurality of the cells from the predetermined number of the identification numbers excluding the first identification number. The terminal includes a communication control unit. The communication control unit performs the first communication or the second communication by using the first identification number or the second identification number assigned by the base station.

Communication system

A base station apparatus includes a plurality of wireless control devices, each of which transmits data blocks addressed to a wireless device connected to the wireless control device, a plurality of wireless devices, each of which transmits data blocks addressed to a wireless control device connected to the wireless device; and relay devices arranged between the wireless control devices and the wireless devices. Each relay device includes a plurality of transmission ports, a table to store a correspondence between destinations of received data blocks and transmission ports for transmitting the reception data blocks, a sorting unit to sort received data blocks to one of the plurality of transmission ports corresponding to destinations of the received data blocks, and a controller to control rewriting of the table for changing the correspondence.

Base station apparatus

In a control apparatus, to control operations with a first base station forming a first radio section and a second base station forming a second radio section which is overlaid with the first radio section and has relatively lower transmission power, a connection change determination unit determines whether to perform connection in response to a connection destination change request from a mobile terminal, a measurement unit measures communication conditions from the first or second base station about all mobile terminals existing in the first radio section, a change value determination unit determines a change value of transmission power of the second base station, a prediction unit predicts communication conditions after transmission power of the second base station is changed based on the change value, and a power change unit changes transmission power of the second base station based on the change value.

Control apparatus, control method, and mobile communication system

Provided is a radio resource allocation method of allocating common radio resources shared among a plurality of radio stations or a plurality of sectors to each of the plurality of radio stations or each of the plurality of sectors. The method includes defining, as a frame set, a given number of radio frames for repeatedly providing the common radio resources along a time axis, defining, as radio resource units, minimum units obtained by dividing the common radio resources provided by the frame set in units of the radio frames and in units of sub-channel groups, and allocating at least one of the radio resource units to each of the plurality of radio stations or the each of the plurality of sectors.

Radio resource allocation method and radio station

Adjacent base stations transmit and receive a signal using a plurality of carriers (frequencies), for example, fthrough f. One base station has the largest transmission power for the carrier fand the smallest transmission power for the carrier f. Another base station has the smallest transmission power for the carrier fand the largest transmission power for the carrier f. Each of the carriers fthrough fhas a different boundary positions.

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Kawasaki, Japan

Masato Katori