Fujitsu Corporation

Evolium S.a.s.

Shingo Mizuno

Kimio Watanabe

Ichiro Ayukawa

Hisamichi Hazama

Kazutoshi Kawamura

Kimihiko Yoshimura

Tadayuki Sakama

Yasushi Miyagawa

Yuji Shiraishi

Gentaro Muramatsu

Masao Fujikawa

Takako Sakuma

There is provided a process management system which, when a crash occurs in execution of a processing process, can immediately restart a processing process while holding data used in occurrence of the crash as much as possible. When a determination unit determines that a detected crash is not a crash caused by data used in a processing process, a processing unit reexecutes the processing process in which the crash occurs. When the determination unit determines that the detected crash is a crash caused by the data used in the processing process, an initialization unit initializes the data used in the processing process.

Process management system

When a wireless channel fails, a working signal and a protection signal are synchronized and switching is performed without instantaneous disconnection. Each working unit of a plurality of working units is provided with a wireless-channel failure detector for detecting a failure that has occurred in a working wireless channel; a synchronization detecting circuit for detecting synchronization between a working wireless channel and a protection wireless channel; a changeover switch for selecting a signal from either the protection wireless channel or a working wireless channel without instantaneous disconnection; and a unit failure detector for detecting a failure that requires switching of a unit. When a failure develops in a wireless channel and a working wireless channel and the protection wireless channel are synchronized, a radio protection switching device controls the changeover switch to switch between working and protection wireless channels without instantaneous disconnection. Further, when failure that requires switching of a unit occurs, the radio protection switching device controls a unit changeover switch to switch between a working unit and the protection unit.

SDH wireless transmission 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

Radio working lines are provided to correspond to optical lines and a single radio standby line is provided. An optical-line failure detecting unit monitors occurrence of failure in each of the optical line, and a radio-line failure detecting unit monitors the occurrence of failure in each of the radio working lines. When occurrence of failure in an optical line has been detected, a relief-rank management unit makes the rank for relief of the radio working line corresponding to this optical line lower than rank for relief of radio working lines corresponding to optical lines that have not failed. When a failure has occurred in two or more radio working lines, a line changeover controller transmits data, which is to be sent to a radio working line that failed, via the radio standby line.

Growing community of inventors

Kawasaki, Japan

Shingo Mizuno