Fujitsu Corporation

Yutaka Isonuma

Hajime Hasegawa

Mikio Nakayama

Miyuki Kawataka

A base station device receives an acquisition request for data from a first terminal and transmits, to the first terminal, data associated with the acquisition request. At this point, while the base station device is in the process of transmitting the requested data to the first terminal by using a first transmission line, the base station device receives, from a second terminal, an acquisition request for data that is the same as the requested data. In such a case, the base station device transmits, to both the first terminal and the second terminal by using the first transmission line, data that has not been transmitted to the first terminal to which the requested data is being transmitted among the requested data and transmits, to the second terminal by using a second transmission line, data that has been transmitted to the first terminal among the requested data.

Base station device, data transmission control method, and data transmission control system

A wireless communication system having a plurality of wireless base stations (BSs), and a second BS included under at least one of a first BS among the plurality of BSs and usable by a specified mobile station, the wireless communication system includes registering first identifiers as identifiers of the first BS and a second identifier as an identifier of the second BS in the specified mobile station in advance. The wireless communication system includes transmitting first information to the second BS when an identifier of a present cell is other than the first and second identifiers, and transmitting second information to the second BS when the identifier of the present cell is the first or second identifier, and controlling an operation of the second BS based on the received first or second information.

Wireless communication system, mobile station, wireless base station and communication method

A processing apparatus for measuring accumulated values of performance monitoring (PM) parameters concerning a reception signal received by a transmission device, which is capable of detecting upper layer failures in a more accurate, hardware-based way, without increasing the workload imposed on the system's firmware. PM parameters represent the statistics of events that meet prescribed criteria for defects and anomalies in the reception signal. The processing apparatus has a plurality of failure detection units to detect different kinds of failures in the reception signal and produce failure detection signals corresponding thereto. Those failure detection units include a first failure detection unit that detects a first kind of failure and a second failure detection unit that detects a second kind of failure. On the basis of the failure detection signals, a PM controller detects at least one kind of PM parameter, and a counter unit accumulates the detected PM parameter. A control signal generator produces a stop command signal that is activated while at least the second kind of failure is present. This stop command signal is supplied to the first failure detection unit to inhibit its operation and stop the detection of the first kind of failure.

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Yokohama, Japan

Yutaka Isonuma