Fujitsu Corporation

Kazutoshi Kawamura

Kimio Watanabe

Ichiro Ayukawa

Naoya Yamazaki

Hisamichi Hazama

Shingo Mizuno

Kiyofumi Hara

Kiyoshi Komatsu

Hiroyuki Ohhashi

Yoshiko Koizumi

Yasushi Miyagawa

Yuji Shiraishi

Kimihiko Yoshimura

Takeshi Yamana

Daisuke Inagaki

Nobuyuki Arai

Teruo Mizumoto

Norio Ohki

Yusuke Shoji

Toshio Nakajima

Hisatake Do

A wireless network control system includes a macrocell base station configured to form a macrocell, at least one small cell base station configured to form a small cell disposed within the macrocell, and a control apparatus including a controller configured to execute a process of acquiring a first value indicating a traffic state of a wireless terminal using the macrocell and a second value indicating a traffic state of a wireless terminal using the small cell, and a process of setting OFF the small cell when an added value of the first value and the second value falls within a predetermined range related to the macrocell.

Wireless network control system to perform on-off control for small cell

An apparatus stores first identification information in association with each of a plurality of base stations, where the first identification information identifies locations included in a wireless area that is formed according to transmission power control by each of the plurality of base stations. The apparatus controls, based on parameters indicating wireless communication capability at a target location that is included in a first wireless area formed by a first base station and identified by the first identification information, transmission power of a second base station which forms a second wireless area including the target location.

Apparatus and method for selecting an optimum base station whose transmission power is to be changed

A communication monitoring and controlling apparatus for easily collecting monitoring information is connected to an existing network composed of a plurality of communication equipment. A management information collecting unit collects management information of each of the communication equipment. The management information is in an existing network management information format. A format converting unit converts the management information in the existing network management information format into management information in a new-type network management information format. The new-type network management information format is a format used by the new-type network, and handles the existing network composed of the communication equipments as one network element. The converted management information is transmitted to at least one operation system of the new-type network by a transmitting unit.

Communication monitoring and controlling apparatus

An SDH/PDH monitoring and integrating apparatus collects control data generated in a monitoring unit employed in each PDH radio apparatus in a PDH communication network, transforms the control data into a control command that can be processed in an SDH communication network and transmits the control command to the SDH communication network. The control command transmitted to the SDH communication network arrives at an operation system by way of components such as a DCC (Digital Communication Channel), a monitoring unit employed in an SDH radio apparatus or employed in an SDH transmission apparatus and an X.25 network. The operation system extracts control data generated in the PDH communication network from the control command, executing the same processing as that of the conventional PDH monitoring panel for the extracted control data.

SDH-communication-network/already existing communication network

A control system for a communication apparatus has capability of coping with bus extension. The control system includes a control section and a plurality of controlled sections connected to the control section via a bus. Each controlled section accommodates at least one object to be controlled. The control section has a first interface for extension bus generation which includes a latch section and a bus transmission section. The controlled section has a second interface section for extension bus generation which includes a reception section, a judgment section, and a permission signal send-back section. The bus is formed by a bus which complies with a standard regarding mutual connection between apparatuses in a data communication system so as to send and receive pieces of information, each including a predetermined number of bits, and control signals. This makes it possible to suppress the hardware cost of channel sections and to efficiently perform highly functional monitoring and controlling.

Control system for coping with bus extension in controlling a

In an order wire as an auxiliary line for use in the installation and maintenance of communication equipment, a method of producing a ring-back tone includes of transmitting a DTMF signal on the side of the calling station, causing a call-in tone to be produced, on the side of the called station, when a specific condition is satisfied, transmitting a ring-back tone signal, on the side of the called station, containing data related to the station number of the calling station, and causing a ring-back tone to be produced, on the side of the calling station, when a specific condition is satisfied. By using the method, the ring-back tone is produced only in the calling station without the need for an exchange apparatus.

Method of producing ring-back tone in order wire

A digital radio transmission system having a first terminal office (10), a second terminal office (20) and at least one drop/insertion (DI) office (30) located therebetween. Long distance lines between the first and second terminal offices are handled in the DI office together with first and short distance lines each being replaced by first and second protection lines, respectively. A protection line for the long distance lines is realized by commonly using the first and second protection lines inherently allotted to the first and second short distance lines. Further the line switching, due to a fault in the long distance line, from the faulty long distance line to the both the first and second short line side protection lines can be achieved by communicating a particular line switching control signal among all the offices.

Digital radio transmission system

Growing community of inventors

Chigasaki, Japan

Kazutoshi Kawamura