Transmission line loss testing method, slave station using the method, master station, and communication system

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	Transmission line loss testing method, slave station using the method, master station, and communication system
其他题名	Transmission line loss testing method, slave station using the method, master station, and communication system
	NAGAYAMA, AKIRA, FUJITSU LIMITED; SHIMIZU, KAZUYOSHI, FUJITSU LIMITED
	2006-05-03
专利权人	FUJITSU LIMITED
公开日期	2006-05-03
授权国家	欧洲专利局
专利类型	发明申请
摘要	A transmission line testing method for testing the transmission loss between a master station and a slave station additionally provided to a star communication system, a slave station using the method, a master station, and an optical communication system. In a transmission line under test of a star communication system, the power of a signal is measured at a second end to which a slave station to be provided additionally is connected and a first end other than the second end by second and first measuring means respectively, and the result of the measurement at the first end is stored in storage means. Alternatively, the result of the measurement at the first end is transmitted to accommodating means by transferring means. The accommodating means accommodates the result of the measurement at the first end in a downstream signal and transmits it to the slave station. In the slave station, information extracting means extracts the result of the measurement at the first end from the downstream signal, and processing means calculates the difference between the measurement results at the first and second ends, thereby calculating the transmission loss of the transmission line under test between the first and second ends.
其他摘要	一种用于测试主站和从站之间的传输损耗的传输线测试方法，其另外提供给星形通信系统，使用该方法的从站，主站和光通信系统。在星形通信系统的测试传输线中，信号的功率在另一端连接的从站连接的第二端和第二端的第一端和第二测量装置分别测量信号的功率。并且第一端的测量结果存储在存储装置中。或者，第一端的测量结果通过传送装置传送到容纳装置。容纳装置在下游信号中容纳第一端的测量结果并将其发送到从站。在从站中，信息提取装置从下游信号中提取第一端的测量结果，并且处理装置计算第一和第二端的测量结果之间的差值，从而计算传输线的传输损耗。在第一和第二端之间进行测试。
主权项	A method for measuring, for a test, a transmission loss in one optical transmission line, the one optical transmission line connected with an added slave station in an optical communication system in which a master station and a plurality of slave stations are connected in a star network via an optical repeater and optical transmission lines, the method comprising the steps of: measuring power of an optical signal at predetermined point(s) in said one optical transmission line except for its end which is connected with said added slave station; notifying information about measured power of said optical signal; incorporating, at said master station, notified information into a downstream optical signal to be transmitted to said added slave station; measuring power of an optical signal at the end of said one optical transmission line, the end being connected with said added slave station; extracting said information from said downstream optical signal at said added slave station; and obtaining a transmission loss in said one optical transmission line at said added slave station, based on extracted information and the power of said optical signal measured at said added slave station.
申请日期	2000-06-30
专利号	EP1309097A4
专利状态	失效
申请号	EP2000942416
公开（公告）号	EP1309097A4
IPC 分类号	H04B3/46 \| H04B3/48 \| H04B10/07 \| H04B10/077 \| H04B10/207 \| H04B10/272 \| H04B17/00 \| H04L12/26 \| H04L12/44 \| G01M11/02
专利代理人	-
代理机构	HOFFMANN - EITLE
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/62461
专题	半导体激光器专利数据库
作者单位	FUJITSU LIMITED
推荐引用方式 GB/T 7714	NAGAYAMA, AKIRA, FUJITSU LIMITED,SHIMIZU, KAZUYOSHI, FUJITSU LIMITED. Transmission line loss testing method, slave station using the method, master station, and communication system. EP1309097A4[P]. 2006-05-03.

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