KR100387956B1 - Transmission distance measuring method and apparatus using signal loopback in optical transmission module for imt-2000 digital optical repeater - Google Patents
Transmission distance measuring method and apparatus using signal loopback in optical transmission module for imt-2000 digital optical repeater Download PDFInfo
- Publication number
- KR100387956B1 KR100387956B1 KR1020020071456A KR20020071456A KR100387956B1 KR 100387956 B1 KR100387956 B1 KR 100387956B1 KR 1020020071456 A KR1020020071456 A KR 1020020071456A KR 20020071456 A KR20020071456 A KR 20020071456A KR 100387956 B1 KR100387956 B1 KR 100387956B1
- Authority
- KR
- South Korea
- Prior art keywords
- pulse
- remote station
- bit
- loopback
- optical
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/29—Repeaters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0775—Performance monitoring and measurement of transmission parameters
Abstract
PURPOSE: A transmission distance measuring method and apparatus using a signal loopback in an optical transmission module for an IMT-2000 digital optical repeater are provided to simply measure a distance by generating a pulse and measuring time taken from a point when the pulse is returned through a signal loopback at a remote station to a point when the pulse signal comes back. CONSTITUTION: An optical signal received from upward is changed to 16 144 Mb/s signals through an optical repeater(201) and a 1:16 demultiplexer(202), and an overhead and a payload bit are demultiplexed through a reframer(204). The 16 155 Mb/s signals including a pulse bit are inputted to the reframer(204) and simultaneously to a16:1 multiplexer(210), and then transmitted to the next remote station. As for the pulse bit extracted by an overhead processor(208), if a pertinent remote station is an object for a distance measurement, a loopback switch(206) is connected by controlling a distance measurement pulse loopback of a remote station NMS(Network Management System) and then the pulse bit is returned reversely through an OR gate(207). The returned pulse bit gets back to a distribution station. If the pertinent remote station is not an object for distance measurement, the OR gate(207) passes the pulse bit inputted reversely through a reframer(209).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020071456A KR100387956B1 (en) | 2002-11-18 | 2002-11-18 | Transmission distance measuring method and apparatus using signal loopback in optical transmission module for imt-2000 digital optical repeater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020071456A KR100387956B1 (en) | 2002-11-18 | 2002-11-18 | Transmission distance measuring method and apparatus using signal loopback in optical transmission module for imt-2000 digital optical repeater |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR20-2002-0034311U Division KR200304999Y1 (en) | 2002-11-18 | 2002-11-18 | A transmission distance measurement apparatus using the signal loop-back in an optical transmission module for an IMT-2000 digital optical repeater network |
Publications (1)
Publication Number | Publication Date |
---|---|
KR100387956B1 true KR100387956B1 (en) | 2003-06-25 |
Family
ID=37421739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020020071456A KR100387956B1 (en) | 2002-11-18 | 2002-11-18 | Transmission distance measuring method and apparatus using signal loopback in optical transmission module for imt-2000 digital optical repeater |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100387956B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100866185B1 (en) * | 2002-01-15 | 2008-10-30 | 삼성전자주식회사 | Method and apparatus for compensating fiber optic delay in synchronous mobile communication system using synchronous digital hierarchy |
KR100907249B1 (en) | 2007-07-04 | 2009-07-10 | 한국전기연구원 | TOA and TDOA estimating method considering clock drifting influence of the wireless positioning |
CN102916739A (en) * | 2012-10-31 | 2013-02-06 | 索尔思光电(成都)有限公司 | Real-time loop-back control system for optical module |
WO2015083920A1 (en) * | 2013-12-04 | 2015-06-11 | 주식회사 쏠리드 | Optical repeater in ring topology scheme |
-
2002
- 2002-11-18 KR KR1020020071456A patent/KR100387956B1/en not_active IP Right Cessation
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100866185B1 (en) * | 2002-01-15 | 2008-10-30 | 삼성전자주식회사 | Method and apparatus for compensating fiber optic delay in synchronous mobile communication system using synchronous digital hierarchy |
KR100907249B1 (en) | 2007-07-04 | 2009-07-10 | 한국전기연구원 | TOA and TDOA estimating method considering clock drifting influence of the wireless positioning |
CN102916739A (en) * | 2012-10-31 | 2013-02-06 | 索尔思光电(成都)有限公司 | Real-time loop-back control system for optical module |
WO2015083920A1 (en) * | 2013-12-04 | 2015-06-11 | 주식회사 쏠리드 | Optical repeater in ring topology scheme |
US9559777B2 (en) | 2013-12-04 | 2017-01-31 | Solid, Inc. | Relay system in ring topology |
US10873795B2 (en) | 2013-12-04 | 2020-12-22 | Solid. Inc. | Relay system in ring topology |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105187275B (en) | A kind of method and device for measuring the asymmetric time delay of fiber transmission link | |
BR9911166A (en) | Process and apparatus for assessing channel signal strength at a mobile station | |
WO2000034798A3 (en) | Apparatus and method for triggerable location reporting | |
CA2206251A1 (en) | Method and apparatus for testing a digital communication channel at variable or fixed data rates | |
EP1826926A4 (en) | An implement method of short rate traffic signal transmitted in optical transport network | |
DK2256953T3 (en) | Method and apparatus for using channel state information in a wireless communication system | |
HUP0004241A2 (en) | Positioning system for digital telephone networks, digital telephone network including positioning system, handset for that digital telephone network, and method of locating mobil phoneset | |
GB0104973D0 (en) | Quality of service monitor | |
EP1223780A3 (en) | Method and apparatus for providing high speed data communication in a cellular environment | |
DE69011579D1 (en) | Pseudo-synchronization method for a time-division multiplex transmission network and uses. | |
EP1783927A3 (en) | Apparatuses for channel quality feedback in a wireless communication system | |
MY142938A (en) | A method and apparatus for interrupting a transmission of a multicast signal | |
GB2419365A (en) | Apparatus and method for self-powered communication and sensor network | |
JP2003298515A5 (en) | ||
DE69933420D1 (en) | DATA TRANSMISSION AND RADIO SYSTEM | |
KR100387956B1 (en) | Transmission distance measuring method and apparatus using signal loopback in optical transmission module for imt-2000 digital optical repeater | |
MX9304986A (en) | A METHOD FOR FORMING A QUALITY MEASURE FOR SIGNAL BURST. | |
US20090067338A1 (en) | Determination of Channel Latency within a Round-Trip Path | |
IE812306L (en) | Tasi system | |
WO2003096549A3 (en) | Remote monitoring system | |
KR200304999Y1 (en) | A transmission distance measurement apparatus using the signal loop-back in an optical transmission module for an IMT-2000 digital optical repeater network | |
JPS5440010A (en) | Centralized monitor system for digital transmission network | |
AT500266B8 (en) | METHOD AND DEVICE FOR TRANSMITTING RADIO SIGNALS | |
JPS5843939B2 (en) | Mobile communication method | |
ATE343261T1 (en) | DEVICE AND METHOD FOR IMMEDIATE DETECTION IN A NETWORK ARRANGEMENT |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
A302 | Request for accelerated examination | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20070601 Year of fee payment: 5 |
|
LAPS | Lapse due to unpaid annual fee |