# US 8,542,993 B2 · Burst power measurements using averaged power measurement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,542,993 B2 - Document ID: US8542993B2 - Status: Granted - Kind: B2 - Application number: 13/460,185 - Filed: 2012-04-30 - Published: 2012-09-13 - Granted: 2013-09-24 - Earliest claimed: 2008-01-03 - Assignees: Futurewei Technologies, Inc. - Applicants: Frank J. Effenberger; Yin Jinrong; Yang Sulin - Inventors: Frank J. Effenberger; Yin Jinrong; Yang Sulin - Web page: https://patentgrep.com/patent/US8542993B2 ## CPC - H04Q 11/0067: {Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring} - H04B 10/07955: {Monitoring or measuring power} - H04B 17/26: using historical data, averaging values or statistics - H04J 14/0282: {WDM tree architectures} - H04Q 2011/0049: {Crosstalk reduction; Noise; Power budget} - H04Q 2011/0083: {Testing; Monitoring} - H04Q: SELECTING (switches, relays, selectors H01H; wireless communication networks H04W) - H04B: TRANSMISSION - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract An apparatus comprising an individual optical power level calculation (IOPLC) module and a transceiver coupled to the IOPLC module and configured to communicate with a plurality of optical network units (ONUs). Also disclosed is an apparatus comprising a control and management (CM) module, an average power level measurement (APLM) module coupled to the CM module, a first transceiver coupled to the CM module and configured to communicate with an optical line terminal (OLT), and a second transceiver coupled to the CM module and the APLM module, and configured to communicate with a plurality of ONUs. ## Claims ### Claim 1 A reach extender comprising: an upstream signal regenerator; and a measurement circuit configured to generate a series of measurements of time averaged received upstream optical signal power from one or more optical network units (ONUs), wherein the measurement circuit has a temporal response similar to a low pass filter, wherein the reach extender is configured to report the series of measurements to an optical line terminal (OLT), and wherein the reach extender is located between the one or more ONUs and the OLT. ### Claim 2 (depends on 1) The reach extender of claim 1, wherein the measurement circuit is configured to measure optical signal power without using burst-level timing information from the one or more ONUs. ### Claim 3 (depends on 1) The reach extender of claim 1, wherein the upstream signal regenerator is configured to regenerate signals from the one or more ONUs in the upstream direction to the OLT. ### Claim 4 (depends on 1) The reach extender of claim 1, wherein the upstream signal regenerator is an optical-electrical-optical (OEO) amplifier. ### Claim 5 (depends on 1) The reach extender of claim 1, wherein the measurement circuit has a temporal response similar to a one pole low pass filter. ### Claim 6 (depends on 1) The reach extender of claim 1, wherein an optical trunk line (OTL) is located between the reach extender and the OLT, and wherein an optical distribution network (ODN) is located between the reach extender and the one or more ONUs. ### Claim 7 (depends on 1) The reach extender of claim 1, wherein the reach extender is not a part of the one or more ONUs, the OLT, an optical trunk line (OTL), and an optical distribution network (ODN). ### Claim 8 A method comprising: regenerating signals from one or more optical network units (ONUs) in the upstream direction to an optical line terminal (OLT); generating a series of measurements of time averaged received upstream optical signal power from the one or more ONUs, wherein the measurements are generated similar to a low pass filter and reporting the series of measurements to the OLT. ### Claim 9 (depends on 8) The method of claim 8, wherein optical signal power is measured without using burst-level timing information from the one or more ONUs. ### Claim 10 (depends on 8) The method of claim 8, wherein the regenerating is performed by an upstream signal regenerator. ### Claim 11 (depends on 10) The method of claim 10, wherein the upstream signal regenerator is an optical-electrical-optical (OEO) amplifier. ### Claim 12 (depends on 8) The method of claim 8, wherein the measurements are generated similar to a one pole low pass filter. ### Claim 13 (depends on 8) The method of claim 8, wherein the method is performed in a reach extender, and wherein an optical trunk line (OTL) is located between the reach extender and the OLT, and wherein an optical distribution network (ODN) is located between the reach extender and the one or more ONUs. ### Claim 14 (depends on 10) The method of claim 10, wherein the upstream signal regenerator is a part of a reach extender, wherein the generating and performing are performed by the reach extender, and wherein the reach extender is not a part of the one or more ONUs, the OLT, an optical trunk line (OTL), and an optical distribution network (ODN). ### Claim 15 A reach extender comprising: an optical-electrical-optical (OEO) amplifier configured to perform OEO regeneration in an upstream direction; and a measurement circuit configured to generate a series of measurements of time averaged received upstream optical power from one or more optical network units (ONUs), wherein the measurement circuit has a temporal response similar to a low pass filter, wherein the reach extender is configured to report the series of measurements, and wherein the reach extender is located between the one or more ONUs and an optical line terminal (OLT). ### Claim 16 (depends on 15) The reach extender of claim 15, wherein the measurement circuit is configured to measure optical signal power without using burst-level timing information from the one or more ONUs. ### Claim 17 (depends on 15) The reach extender of claim 15, wherein the upstream signal regenerator is configured to regenerate signals from the one or more ONUs in the upstream direction to the OLT. ### Claim 18 (depends on 15) The reach extender of claim 15, wherein the measurement circuit has a temporal response similar to a one pole low pass filter. ### Claim 19 (depends on 15) The reach extender of claim 15, wherein an optical trunk line (OTL) is located between the reach extender and the OLT, and wherein an optical distribution network (ODN) is located between the reach extender and the one or more ONUs. ### Claim 20 (depends on 15) The reach extender of claim 15, wherein the reach extender is not a part of the one or more ONUs, the OLT, an optical trunk line (OTL), and an optical distribution network (ODN).