Patent US5519830A successfully refreshed from Google Patents.
US5519830A
Expired / Lapsed
US
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Point-to-multipoint performance monitoring and failure isolation system
Assignee: Commscope Connectivity LLC
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Filing: 1993-06-10
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Granted: 1996-05-21
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Expires: 2013-06-10
Abstract
Abstract A system monitors the performance of a communications network and isolates the location of equipment failures therein through analysis of performance error data. The system passively monitors the performance of the network, operating in the background during normal data and/or voice transmission. The head end generates and inserts multiple error codes, one for each remote unit, into the downstream traffic path. Each remote unit extracts and decodes its respective error code to determine whether a downstream error occurred. Each remote unit then calculates a new error code based on the result of the downstream decode and the respective upstream data message. The head end receives the upstream error codes from all the remote units, decodes them, and accumulates the error data from all remote units over a period of time. An error distribution is generated, and an analysis is performed thereon to isolate the location of error causing equipment failures. The information thus obtained can then be used to initiate facility and equipment protection and/or appropriate maintenance procedures. The invention results in an increased quality of transmission with minimal network down time and minimal impact on overall system performance.
Inventors
- 👤 Adam Opoczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:40
CPC Classifications
H; H04; H04L; H04L43/00; H04L1/00; H04L1/22; H04L1/24; H04L2001/0092; H04L2001/0093
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
388 words
A system for performance monitoring a network and isolating the location of equipment failures therein, the network including a head end and a plurality of remote units connected with a distribution means for transmitting data messages between the head end and the plurality of remote ends, said distribution means including a shared feeder connected to the head end, and a plurality of distribution branches, each connected to the shared feeder and to a different one of the plurality of remote units, said system comprising: first generating means in the head end for generating a plurality of first error codes based on a plurality of downstream data messages; first transmitting means in the head end for transmitting the plurality of first error codes and the plurality of downstream data messages to the plurality of remote units a plurality of first decoding means, each in a different one of the plurality of remote units, each for decoding one of the plurality of first error codes and determining therefrom whether a downstream error occurred; a plurality of second generating means, each in a different one of the plurality of remote units, each for generating one of a plurality of second error codes as a function of an upstream data message and whether a downstream error in transmission to the different one of the plurality of remote units occurred; a plurality of transmitters, each in a different one of the plurality of remote units, for transmitting the one of the plurality of second error codes and the upstream data message to the head end; decoding means in the head end for decoding the plurality of second error codes received from the plurality of remote units and producing therefrom a plurality of error data; processing means in the head end for producing an error distribution from the plurality of error data; and means for analyzing the error distribution to isolate the location of equipment failures, said means for analyzing including means for identifying when the error distribution takes the form of an unacceptably high level of errors for two of the plurality of remote units and an acceptable level of errors for the remaining plurality of remote units, wherein the means for analyzing further includes means for isolating the equipment failure to the two remote units having the unacceptably high level of errors.
Claim 2
Independent Claim
388 words
A system for performance monitoring a network and isolating the location of equipment failures therein, the network including a head end and a plurality of remote units connected with a distribution means for transmitting data messages between the head end and the plurality of remote ends, said distribution means including a shared feeder connected to the head end, and a plurality of distribution branches, each connected to the shared feeder and to a different one of the plurality of remote units, said system comprising: first generating means in the head end for generating a plurality of first error codes based on a plurality of downstream data messages; first transmitting means in the head end for transmitting the plurality of first error codes and the plurality of downstream data messages to the plurality of remote units a plurality of first decoding means, each in a different one of the plurality of remote units, each for decoding one of the plurality of first error codes and determining therefrom whether a downstream error occurred; a plurality of second generating means, each in a different one of the plurality of remote units, each for generating one of a plurality of second error codes as a function of an upstream data message and whether a downstream error in transmission to the different one of the plurality of remote units occurred; a plurality of transmitters, each in a different one of the plurality of remote units, for transmitting the one of the plurality of second error codes and the upstream data message to the head end; decoding means in the head end for decoding the plurality of second error codes received from the plurality of remote units and producing therefrom a plurality of error data; processing means in the head end for producing an error distribution from the plurality of error data; and means for analyzing the error distribution to isolate the location of equipment failures, said means for analyzing including means for identifying when the error distribution takes the form of an unacceptably high level of errors for two of the plurality of remote units and an acceptable level of errors for the remaining plurality of remote units, wherein the means for analyzing further includes means for isolating the equipment failure to the two remote units having the unacceptably high level of errors.
Claim 3
Dependent Claim
36 words
The system of claim 1 wherein the means for analyzing further includes means for identifying when the magnitudes of the unacceptably high level of errors for the two of the plurality of remote units are equivalent.
Claim 4
Independent Claim
384 words
A system for performance monitoring a network and isolating the location of equipment failures therein, the network including a head end and a plurality of remote units connected with a distribution means for transmitting data messages between the head end and the plurality of remote ends, said distribution means including a shared feeder connected to the head end, and a plurality of distribution branches, each connected to the shared feeder and to a different one of the plurality of remote units, said system comprising: first generating means in the head end for generating a plurality of first error codes based on a plurality of downstream data messages; first transmitting means in the head end for transmitting the plurality of first error codes and the plurality of downstream data messages to the plurality of remote units a plurality of first decoding means, each in a different one of the plurality of remote units, each for decoding one of the plurality of first error codes and determining therefrom whether a downstream error occurred; a plurality of second generating means, each in a different one of the plurality of remote units, each for generating one of a plurality of second error codes as a function of an upstream data message and whether a downstream error in transmission to the different one of the plurality of remote units occurred; a plurality of transmitters, each in a different one of the plurality of remote units, for transmitting the one of the plurality of second error codes and the upstream data message to the head end; decoding means in the head end for decoding the plurality of second error codes received from the plurality of remote units and producing therefrom a plurality of error data; processing means in the head end for producing an error distribution from the plurality of error data; and means for analyzing the error distribution to isolate the location of equipment failures, wherein the means for analyzing includes means for identifying when the error distribution takes the form of a first unacceptably high level of errors for one of the plurality of remote units and a second unacceptably high level of errors for the remaining plurality of remote units, the second unacceptably high level of errors being less than the first unacceptably high level of errors.
Claim 5
Independent Claim
384 words
A system for performance monitoring a network and isolating the location of equipment failures therein, the network including a head end and a plurality of remote units connected with a distribution means for transmitting data messages between the head end and the plurality of remote ends, said distribution means including a shared feeder connected to the head end, and a plurality of distribution branches, each connected to the shared feeder and to a different one of the plurality of remote units, said system comprising: first generating means in the head end for generating a plurality of first error codes based on a plurality of downstream data messages; first transmitting means in the head end for transmitting the plurality of first error codes and the plurality of downstream data messages to the plurality of remote units a plurality of first decoding means, each in a different one of the plurality of remote units, each for decoding one of the plurality of first error codes and determining therefrom whether a downstream error occurred; a plurality of second generating means, each in a different one of the plurality of remote units, each for generating one of a plurality of second error codes as a function of an upstream data message and whether a downstream error in transmission to the different one of the plurality of remote units occurred; a plurality of transmitters, each in a different one of the plurality of remote units, for transmitting the one of the plurality of second error codes and the upstream data message to the head end; decoding means in the head end for decoding the plurality of second error codes received from the plurality of remote units and producing therefrom a plurality of error data; processing means in the head end for producing an error distribution from the plurality of error data; and means for analyzing the error distribution to isolate the location of equipment failures, wherein the means for analyzing includes means for identifying when the error distribution takes the form of a first unacceptably high level of errors for one of the plurality of remote units and a second unacceptably high level of errors for the remaining plurality of remote units, the second unacceptably high level of errors being less than the first unacceptably high level of errors.
Claim 6
Dependent Claim
30 words
The system of claim 3 wherein the means for analyzing further includes means for isolating the equipment failure to the remote unit having the first unacceptably high level of errors.
Claim 7
Dependent Claim
44 words
The system of claim 4 wherein the means for analyzing further includes means for identifying when the first unacceptably high level of errors is of the same magnitude as a total number of errors occurring in across all the remaining plurality of remote units.
Claim 8
Independent Claim
417 words
A system for isolating the location of equipment failures in a telecommunications system including a head end, a plurality of remote ends and a distribution means for transmitting messages between the head end and the plurality of remote units, the distribution means including a shared feeder section connected to the head end and a plurality of distribution sections each connected to the shared feeder and to a different one of the plurality of remote units, the system comprising: means in the head end for generating a plurality of downstream error codes, each based on a different one of a plurality of downstream messages; means in each of the remote units for receiving a different one of the plurality of downstream messages and the respective one of the plurality of downstream error codes; means in each of the remote units for decoding the received downstream error code and determining therefrom whether a downstream error occurred; error flag means in each of the remote units for indicating whether a downstream error occurred; means in each of the remote units for generating one of a plurality of upstream error codes each based on one of a plurality of upstream messages and on the decoded downstream error code; means in the head end for receiving the plurality of upstream messages and the plurality of upstream error codes; means in the head end for decoding the plurality of upstream error codes, determining therefrom whether at least one of either a downstream or upstream error occurred, and producing therefrom error data representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units; accumulating means for accumulating the error data over a selected period of time and producing therefrom accumulated error data; means for producing an error distribution across the plurality of remote ends from the accumulated error data; means for analyzing the error distribution and identifying therefrom a type of the error distribution indicative of the location of an equipment failure; means for setting a maximum acceptable bit error rate, including means for identifying when the error distribution shows a first level of errors associated with one of the plurality of remote units that is higher than the alarm triggering bit error rate and a uniform level of errors across the remaining plurality of remote units at a second level that is lower than the maximum acceptable bit error rate; and means for setting an alarm triggering bit error rate.
Claim 9
Independent Claim
417 words
A system for isolating the location of equipment failures in a telecommunications system including a head end, a plurality of remote ends and a distribution means for transmitting messages between the head end and the plurality of remote units, the distribution means including a shared feeder section connected to the head end and a plurality of distribution sections each connected to the shared feeder and to a different one of the plurality of remote units, the system comprising: means in the head end for generating a plurality of downstream error codes, each based on a different one of a plurality of downstream messages; means in each of the remote units for receiving a different one of the plurality of downstream messages and the respective one of the plurality of downstream error codes; means in each of the remote units for decoding the received downstream error code and determining therefrom whether a downstream error occurred; error flag means in each of the remote units for indicating whether a downstream error occurred; means in each of the remote units for generating one of a plurality of upstream error codes each based on one of a plurality of upstream messages and on the decoded downstream error code; means in the head end for receiving the plurality of upstream messages and the plurality of upstream error codes; means in the head end for decoding the plurality of upstream error codes, determining therefrom whether at least one of either a downstream or upstream error occurred, and producing therefrom error data representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units; accumulating means for accumulating the error data over a selected period of time and producing therefrom accumulated error data; means for producing an error distribution across the plurality of remote ends from the accumulated error data; means for analyzing the error distribution and identifying therefrom a type of the error distribution indicative of the location of an equipment failure; means for setting a maximum acceptable bit error rate, including means for identifying when the error distribution shows a first level of errors associated with one of the plurality of remote units that is higher than the alarm triggering bit error rate and a uniform level of errors across the remaining plurality of remote units at a second level that is lower than the maximum acceptable bit error rate; and means for setting an alarm triggering bit error rate.
Claim 10
Dependent Claim
42 words
The system according to claim 6 wherein the means for analyzing further includes means for identifying when the equipment failure to the one of the plurality of remote units having the first level of errors or to the distribution section connected thereto.
Claim 11
Independent Claim
408 words
A system for isolating the location of equipment failures in a telecommunications system including a head end, a plurality of remote ends and a distribution means for transmitting messages between the head end and the plurality of remote units, the distribution means including a shared feeder section connected to the head end and a plurality of distribution sections each connected to the shared feeder and to a different one of the plurality of remote units, the system comprising: means in the head end for generating a plurality of downstream error codes, each based on a different one of a plurality of downstream messages; means in each of the remote units for receiving a different one of the plurality of downstream messages and the respective one of the plurality of downstream error codes; means in each of the remote units for decoding the received downstream error code and determining therefrom whether a downstream error occurred; error flag means in each of the remote units for indicating whether a downstream error occurred; means in each of the remote units for generating one of a plurality of upstream error codes each based on one of a plurality of upstream messages and on the decoded downstream error code; means in the head end for receiving the plurality of upstream messages and the plurality of upstream error codes; means in the head end for decoding the plurality of upstream error codes, determining therefrom whether at least one of either a downstream or upstream error occurred, and producing therefrom error data representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units; accumulating means for accumulating the error data over a selected period of time and producing therefrom accumulated error data; means for producing an error distribution across the plurality of remote ends from the accumulated error data; means for analyzing the error distribution and identifying therefrom a type of the error distribution indicative of the location of an equipment failure; including means for identifying when the error distribution shows a first level of errors associated with two of the plurality of remote units that is higher than the alarm triggering bit error rate and a uniform level of errors across the remaining plurality of remote units at a second level that is lower than the maximum acceptable bit error rate; and means for setting a maximum acceptable bit error rate.
Claim 12
Independent Claim
408 words
A system for isolating the location of equipment failures in a telecommunications system including a head end, a plurality of remote ends and a distribution means for transmitting messages between the head end and the plurality of remote units, the distribution means including a shared feeder section connected to the head end and a plurality of distribution sections each connected to the shared feeder and to a different one of the plurality of remote units, the system comprising: means in the head end for generating a plurality of downstream error codes, each based on a different one of a plurality of downstream messages; means in each of the remote units for receiving a different one of the plurality of downstream messages and the respective one of the plurality of downstream error codes; means in each of the remote units for decoding the received downstream error code and determining therefrom whether a downstream error occurred; error flag means in each of the remote units for indicating whether a downstream error occurred; means in each of the remote units for generating one of a plurality of upstream error codes each based on one of a plurality of upstream messages and on the decoded downstream error code; means in the head end for receiving the plurality of upstream messages and the plurality of upstream error codes; means in the head end for decoding the plurality of upstream error codes, determining therefrom whether at least one of either a downstream or upstream error occurred, and producing therefrom error data representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units; accumulating means for accumulating the error data over a selected period of time and producing therefrom accumulated error data; means for producing an error distribution across the plurality of remote ends from the accumulated error data; means for analyzing the error distribution and identifying therefrom a type of the error distribution indicative of the location of an equipment failure; including means for identifying when the error distribution shows a first level of errors associated with two of the plurality of remote units that is higher than the alarm triggering bit error rate and a uniform level of errors across the remaining plurality of remote units at a second level that is lower than the maximum acceptable bit error rate; and means for setting a maximum acceptable bit error rate.
Claim 13
Dependent Claim
42 words
The system according to claim 8 wherein the means for analyzing further includes means for identifying when the equipment failure to the two of the plurality of remote units having the first level of errors or to the distribution sections connected thereto.
Claim 14
Independent Claim
417 words
A system for isolating the location of equipment failures in a telecommunications system including a head end, a plurality of remote ends and a distribution means for transmitting messages between the head end and the plurality of remote units, the distribution means including a shared feeder section connected to the head end and a plurality of distribution sections each connected to the shared feeder and to a different one of the plurality of remote units, the system comprising: means in the head end for generating a plurality of downstream error codes, each based on a different one of a plurality of downstream messages; means in each of the remote units for receiving a different one of the plurality of downstream messages and the respective one of the plurality of downstream error codes; means in each of the remote units for decoding the received downstream error code and determining therefrom whether a downstream error occurred; error flag means in each of the remote units for indicating whether a downstream error occurred; means in each of the remote units for generating one of a plurality of upstream error codes each based on one of a plurality of upstream messages and on the decoded downstream error code; means in the head end for receiving the plurality of upstream messages and the plurality of upstream error codes; means in the head end for decoding the plurality of upstream error codes, determining therefrom whether at least one of either a downstream or upstream error occurred, and producing therefrom error data representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units; accumulating means for accumulating the error data over a selected period of time and producing therefrom accumulated error data; means for producing an error distribution across the plurality of remote ends from the accumulated error data; means for analyzing the error distribution and identifying therefrom a type of the error distribution indicative of the location of an equipment failure, including means for identifying when the error distribution rate shows a first level of errors associated with one of the plurality of remote units that is higher than the maximum acceptable bit error rate and a uniform level of errors across the remaining plurality of remote units at a second level that is higher than the maximum acceptable bit error rate and lower than the first level of errors; and means for setting a maximum acceptable bit error rate.
Claim 15
Independent Claim
417 words
A system for isolating the location of equipment failures in a telecommunications system including a head end, a plurality of remote ends and a distribution means for transmitting messages between the head end and the plurality of remote units, the distribution means including a shared feeder section connected to the head end and a plurality of distribution sections each connected to the shared feeder and to a different one of the plurality of remote units, the system comprising: means in the head end for generating a plurality of downstream error codes, each based on a different one of a plurality of downstream messages; means in each of the remote units for receiving a different one of the plurality of downstream messages and the respective one of the plurality of downstream error codes; means in each of the remote units for decoding the received downstream error code and determining therefrom whether a downstream error occurred; error flag means in each of the remote units for indicating whether a downstream error occurred; means in each of the remote units for generating one of a plurality of upstream error codes each based on one of a plurality of upstream messages and on the decoded downstream error code; means in the head end for receiving the plurality of upstream messages and the plurality of upstream error codes; means in the head end for decoding the plurality of upstream error codes, determining therefrom whether at least one of either a downstream or upstream error occurred, and producing therefrom error data representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units; accumulating means for accumulating the error data over a selected period of time and producing therefrom accumulated error data; means for producing an error distribution across the plurality of remote ends from the accumulated error data; means for analyzing the error distribution and identifying therefrom a type of the error distribution indicative of the location of an equipment failure, including means for identifying when the error distribution rate shows a first level of errors associated with one of the plurality of remote units that is higher than the maximum acceptable bit error rate and a uniform level of errors across the remaining plurality of remote units at a second level that is higher than the maximum acceptable bit error rate and lower than the first level of errors; and means for setting a maximum acceptable bit error rate.
Claim 16
Dependent Claim
41 words
The system according to claim 10 wherein the means for analyzing further includes means for isolating the equipment failure to the one of the plurality of remote units having the first level of errors or to the distribution section connected thereto.
Claim 17
Independent Claim
247 words
A method of analyzing an error distribution to isolate the location of equipment failures in a communications system, the communications system including a distribution network including a shared feeder connected to a head end and a plurality of distribution sections, each connected to the shared feeder and to a different one of a plurality of remote units, the method comprising the step of: (a) setting a maximum acceptable bit error rate; (b) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (c) accumulating a plurality of error codes representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units and generating therefrom a set of error data; (d) generating an error distribution from the set of error data received from the plurality of remote units; (e) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; and (f) isolating an equipment failure based on the outcome of comparing step (e), including isolating a second equipment failure if the result of comparison step (e) shows a level of errors that is higher than the alarm triggering bit error rate for one of the plurality of remote units and an even distribution of errors across the remaining plurality of remote units at a level that is lower than the maximum acceptable bit error rate.
Claim 18
Independent Claim
247 words
A method of analyzing an error distribution to isolate the location of equipment failures in a communications system, the communications system including a distribution network including a shared feeder connected to a head end and a plurality of distribution sections, each connected to the shared feeder and to a different one of a plurality of remote units, the method comprising the step of: (a) setting a maximum acceptable bit error rate; (b) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (c) accumulating a plurality of error codes representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units and generating therefrom a set of error data; (d) generating an error distribution from the set of error data received from the plurality of remote units; (e) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; and (f) isolating an equipment failure based on the outcome of comparing step (e), including isolating a second equipment failure if the result of comparison step (e) shows a level of errors that is higher than the alarm triggering bit error rate for one of the plurality of remote units and an even distribution of errors across the remaining plurality of remote units at a level that is lower than the maximum acceptable bit error rate.
Claim 19
Dependent Claim
28 words
The method according to claim 12 wherein isolating step (f) further includes the step of isolating the equipment failure to the one of the plurality of remote units.
Claim 20
Dependent Claim
27 words
The method according to claim 12 wherein isolating step (f) further includes the step of isolating the equipment failure to two of the plurality of remote units.
Claim 21
Independent Claim
263 words
A method of analyzing an error distribution to isolate the location of equipment failures in a communications system, the communications system including a distribution network including a shared feeder connected to a head end and a plurality of distribution sections, each connected to the shared feeder and to a different one of a plurality of remote units, the method comprising the step of: (a) setting a maximum acceptable bit error rate; (b) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (c) accumulating a plurality of error codes representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units and generating therefrom a set of error data; (d) generating an error distribution from the set of error data received from the plurality of remote units; (e) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; and (f) isolating an equipment failure based on the outcome of comparing step (e) wherein the plurality of remote units includes at least three remote units and including the step of isolating a third equipment failure if the result of comparison step (e) shows a level of errors that is higher than the alarm triggering bit error rate for two of the plurality of remote units and an ever distribution of errors across the remaining plurality of remote units at a level that is lower than the maximum acceptable bit error rate.
Claim 22
Independent Claim
263 words
A method of analyzing an error distribution to isolate the location of equipment failures in a communications system, the communications system including a distribution network including a shared feeder connected to a head end and a plurality of distribution sections, each connected to the shared feeder and to a different one of a plurality of remote units, the method comprising the step of: (a) setting a maximum acceptable bit error rate; (b) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (c) accumulating a plurality of error codes representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units and generating therefrom a set of error data; (d) generating an error distribution from the set of error data received from the plurality of remote units; (e) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; and (f) isolating an equipment failure based on the outcome of comparing step (e) wherein the plurality of remote units includes at least three remote units and including the step of isolating a third equipment failure if the result of comparison step (e) shows a level of errors that is higher than the alarm triggering bit error rate for two of the plurality of remote units and an ever distribution of errors across the remaining plurality of remote units at a level that is lower than the maximum acceptable bit error rate.
Claim 23
Independent Claim
265 words
A method of analyzing an error distribution to isolate the location of equipment failures in a communications system, the communications system including a distribution network including a shared feeder connected to a head end and a plurality of distribution sections, each connected to the shared feeder and to a different one of a plurality of remote units, the method comprising the step of: (a) setting a maximum acceptable bit error rate; (b) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (c) accumulating a plurality of error codes representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units and generating therefrom a set of error data; (d) generating an error distribution from the set of error data received from the plurality of remote units; (e) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; and (f) isolating an equipment failure based on the outcome of comparing step (e), including isolating a fourth equipment failure if the result of comparison step (e) shows a first rate of errors for one of the plurality of remote units that is higher than the maximum acceptable bit error rate and an even distribution of errors across the remaining plurality of remote units at a second rate of errors that is higher than the maximum acceptable bit error rate, wherein the second rate of errors is lower than the first rate of errors.
Claim 24
Independent Claim
265 words
A method of analyzing an error distribution to isolate the location of equipment failures in a communications system, the communications system including a distribution network including a shared feeder connected to a head end and a plurality of distribution sections, each connected to the shared feeder and to a different one of a plurality of remote units, the method comprising the step of: (a) setting a maximum acceptable bit error rate; (b) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (c) accumulating a plurality of error codes representative of at least one of either a downstream or upstream error in transmissions to and from each of the plurality of remote units and generating therefrom a set of error data; (d) generating an error distribution from the set of error data received from the plurality of remote units; (e) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; and (f) isolating an equipment failure based on the outcome of comparing step (e), including isolating a fourth equipment failure if the result of comparison step (e) shows a first rate of errors for one of the plurality of remote units that is higher than the maximum acceptable bit error rate and an even distribution of errors across the remaining plurality of remote units at a second rate of errors that is higher than the maximum acceptable bit error rate, wherein the second rate of errors is lower than the first rate of errors.
Claim 25
Dependent Claim
28 words
The method according to claim 16 wherein isolating step (f) further includes the step of isolating the equipment failure to the one of the plurality of remote units.
Claim 26
Independent Claim
371 words
A method for monitoring the performance of a telecommunications system connected in a point-to-multipoint configuration, and for isolating the location of equipment failures therein, the telecommunications system including a distribution system including a shared feeder section connected to a head end and a plurality of distribution sections each connected to the shared feeder section and to a different one of the plurality of remote units, the method comprising the steps of: (a) generating a plurality of first error codes based on a plurality at the head end of downstream messages; (b) transmitting each of the plurality of error codes to a different one of a plurality of remote units over the distribution network; (c) decoding at each remote unit each of the error codes and downstream messages to determine whether any downstream errors occurred; (d) generating at each remote unit a plurality of second error codes based on the decoded downstream error codes and on a plurality of upstream messages, wherein each of the plurality of second error codes is generated in a different one of the remote units; (e) transmitting the plurality of second error codes and corresponding upstream messages to the head end over the distribution network; (f) accumulating the plurality of error codes received from the plurality of remote units over a selected period of time; (g) generating an error distribution from the accumulated error codes; and (h) analyzing the error distribution and isolating therefrom the location of the equipment failures; (i) setting a maximum acceptable bit error rate; (j) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (k) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; (l) isolating an equipment failure based on the outcome of comparing step (k), including isolating a second equipment failure if the result of the comparison step (k) shows a rate of errors that is higher than the alarm triggering bit error rate for one of the plurality of remote units and an even distribution of errors across the remaining plurality of remote units at a rate that is lower than the maximum acceptable bit error rate.
Claim 27
Independent Claim
371 words
A method for monitoring the performance of a telecommunications system connected in a point-to-multipoint configuration, and for isolating the location of equipment failures therein, the telecommunications system including a distribution system including a shared feeder section connected to a head end and a plurality of distribution sections each connected to the shared feeder section and to a different one of the plurality of remote units, the method comprising the steps of: (a) generating a plurality of first error codes based on a plurality at the head end of downstream messages; (b) transmitting each of the plurality of error codes to a different one of a plurality of remote units over the distribution network; (c) decoding at each remote unit each of the error codes and downstream messages to determine whether any downstream errors occurred; (d) generating at each remote unit a plurality of second error codes based on the decoded downstream error codes and on a plurality of upstream messages, wherein each of the plurality of second error codes is generated in a different one of the remote units; (e) transmitting the plurality of second error codes and corresponding upstream messages to the head end over the distribution network; (f) accumulating the plurality of error codes received from the plurality of remote units over a selected period of time; (g) generating an error distribution from the accumulated error codes; and (h) analyzing the error distribution and isolating therefrom the location of the equipment failures; (i) setting a maximum acceptable bit error rate; (j) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (k) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; (l) isolating an equipment failure based on the outcome of comparing step (k), including isolating a second equipment failure if the result of the comparison step (k) shows a rate of errors that is higher than the alarm triggering bit error rate for one of the plurality of remote units and an even distribution of errors across the remaining plurality of remote units at a rate that is lower than the maximum acceptable bit error rate.
Claim 28
Dependent Claim
28 words
The method according to claim 18 wherein isolating step (l) further includes the step of isolating the equipment failure to the one of the plurality of remote units.
Claim 29
Independent Claim
370 words
A method for monitoring the performance of a telecommunications system connected in a point-to-multipoint configuration, and for isolating the location of equipment failures therein, the telecommunications system including a distribution system including a shared feeder section connected to a head end and a plurality of distribution sections each connected to the shared feeder section and to a different one of the plurality of remote units, the method comprising the steps of: (a) generating a plurality of first error codes based on a plurality at the head end of downstream messages; (b) transmitting each of the plurality of error codes to a different one of a plurality of remote units over the distribution network; (c) decoding at each remote unit each of the error codes and downstream messages to determine whether any downstream errors occurred; (d) generating at each remote unit a plurality of second error codes based on the decoded downstream error codes and on a plurality of upstream messages, wherein each of the plurality of second error codes is generated in a different one of the remote units; (e) transmitting the plurality of second error codes and corresponding upstream messages to the head end over the distribution network; (f) accumulating the plurality of error codes received from the plurality of remote units over a selected period of time; (g) generating an error distribution from the accumulated error codes; and (h) analyzing the error distribution and isolating therefrom the location of the equipment failures; (i) setting a maximum acceptable bit error rate; (j) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (k) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; (l) isolating an equipment failure based on the outcome of comparing step (k), including isolating a third equipment failure if the result of comparison step (k) shows a rate of errors that is higher than the alarm triggering bit error rate for two of the plurality of remote units and an even distribution of errors across the remaining plurality of remote units at a rate that is lower than the maximum acceptable bit error rate.
Claim 30
Independent Claim
370 words
A method for monitoring the performance of a telecommunications system connected in a point-to-multipoint configuration, and for isolating the location of equipment failures therein, the telecommunications system including a distribution system including a shared feeder section connected to a head end and a plurality of distribution sections each connected to the shared feeder section and to a different one of the plurality of remote units, the method comprising the steps of: (a) generating a plurality of first error codes based on a plurality at the head end of downstream messages; (b) transmitting each of the plurality of error codes to a different one of a plurality of remote units over the distribution network; (c) decoding at each remote unit each of the error codes and downstream messages to determine whether any downstream errors occurred; (d) generating at each remote unit a plurality of second error codes based on the decoded downstream error codes and on a plurality of upstream messages, wherein each of the plurality of second error codes is generated in a different one of the remote units; (e) transmitting the plurality of second error codes and corresponding upstream messages to the head end over the distribution network; (f) accumulating the plurality of error codes received from the plurality of remote units over a selected period of time; (g) generating an error distribution from the accumulated error codes; and (h) analyzing the error distribution and isolating therefrom the location of the equipment failures; (i) setting a maximum acceptable bit error rate; (j) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (k) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; (l) isolating an equipment failure based on the outcome of comparing step (k), including isolating a third equipment failure if the result of comparison step (k) shows a rate of errors that is higher than the alarm triggering bit error rate for two of the plurality of remote units and an even distribution of errors across the remaining plurality of remote units at a rate that is lower than the maximum acceptable bit error rate.
Claim 31
Dependent Claim
28 words
The method according to claim 20 wherein isolating step (l) further includes the step of isolating the equipment failure to the two of the plurality of remote units.
Claim 32
Independent Claim
389 words
A method for monitoring the performance of a telecommunications system connected in a point-to-multipoint configuration, and for isolating the location of equipment failures therein, the telecommunications system including a distribution system including a shared feeder section connected to a head end and a plurality of distribution sections each connected to the shared feeder section and to a different one of the plurality of remote units, the method comprising the steps of: (a) generating a plurality of first error codes based on a plurality at the head end of downstream messages; (b) transmitting each of the plurality of error codes to a different one of a plurality of remote units over the distribution network; (c) decoding at each remote unit each of the error codes and downstream messages to determine whether any downstream errors occurred; (d) generating at each remote unit a plurality of second error codes based on the decoded downstream error codes and on a plurality of upstream messages, wherein each of the plurality of second error codes is generated in a different one of the remote units; (e) transmitting the plurality of second error codes and corresponding upstream messages to the head end over the distribution network; (f) accumulating the plurality of error codes received from the plurality of remote units over a selected period of time; (g) generating an error distribution from the accumulated error codes; and (h) analyzing the error distribution and isolating therefrom the location of the equipment failures; (i) setting a maximum acceptable bit error rate; (j) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (k) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; (l) isolating an equipment failure based on the outcome of comparing step (k), including isolating a fourth equipment failure if the result of the comparison step (k) shows a first rate of errors that is higher than the maximum acceptable bit error rate for one of the plurality of remote units and an even distribution of errors across the remaining plurality of remote units at a second rate of errors that is higher than the maximum acceptable bit error rate, wherein the second rate of errors is lower than the first rate of errors.
Claim 33
Independent Claim
389 words
A method for monitoring the performance of a telecommunications system connected in a point-to-multipoint configuration, and for isolating the location of equipment failures therein, the telecommunications system including a distribution system including a shared feeder section connected to a head end and a plurality of distribution sections each connected to the shared feeder section and to a different one of the plurality of remote units, the method comprising the steps of: (a) generating a plurality of first error codes based on a plurality at the head end of downstream messages; (b) transmitting each of the plurality of error codes to a different one of a plurality of remote units over the distribution network; (c) decoding at each remote unit each of the error codes and downstream messages to determine whether any downstream errors occurred; (d) generating at each remote unit a plurality of second error codes based on the decoded downstream error codes and on a plurality of upstream messages, wherein each of the plurality of second error codes is generated in a different one of the remote units; (e) transmitting the plurality of second error codes and corresponding upstream messages to the head end over the distribution network; (f) accumulating the plurality of error codes received from the plurality of remote units over a selected period of time; (g) generating an error distribution from the accumulated error codes; and (h) analyzing the error distribution and isolating therefrom the location of the equipment failures; (i) setting a maximum acceptable bit error rate; (j) setting an alarm triggering bit error rate, wherein the alarm triggering bit error rate is higher than the maximum acceptable bit error rate; (k) comparing the error distribution with the maximum acceptable bit error rate and the alarm triggering bit error rate; (l) isolating an equipment failure based on the outcome of comparing step (k), including isolating a fourth equipment failure if the result of the comparison step (k) shows a first rate of errors that is higher than the maximum acceptable bit error rate for one of the plurality of remote units and an even distribution of errors across the remaining plurality of remote units at a second rate of errors that is higher than the maximum acceptable bit error rate, wherein the second rate of errors is lower than the first rate of errors.
Claim 34
Dependent Claim
28 words
The method according to claim 22 wherein isolating step (l) further includes the step of isolating the equipment failure to the one of the plurality of remote units.
References Cited (Backward Citations)
US3787613A
Cited
US3934224A
Cited
US4253729A
Cited
US4245340A
Cited
US4441180A
Cited
US4282400A
Cited
US4484218A
Cited
US4395780A
Cited
US4397020A
Cited
US4316285A
Cited
US4316284A
Cited
USRE33900E
Cited
US4545048A
Cited
US4491983A
Cited
CA1204230A
Cited
US4500989A
Cited
EP0118763A2
Cited
US4506387A
Cited
US4574305A
Cited
US4642806A
Cited
US4709418A
Cited
US4651330A
Cited
US4686667A
Cited
EP0168051A2
Cited
GB2172165A
Cited
US4734764A
Cited
US4748689A
Cited
US4775210A
Cited
US4705350A
Cited
US4710924A
Cited
US4745592A
Cited
US4769761A
Cited
WO1988005233A1
Cited
WO1988005232A1
Cited
US4975899A
Cited
US4886336A
Cited
EP0287379A1
Cited
US5010586A
Cited
WO1988009093A1
Cited
DE3719283A1
Cited
EP0308150A1
Cited
WO1989005069A1
Cited
US5173899A
Cited
WO1989005077A1
Cited
EP0318331A1
Cited
US5086470A
Cited
EP0318333A1
Cited
EP0318332A1
Cited
US4977593A
Cited
EP0318335A1
Cited
WO1989005070A1
Cited
US5063595A
Cited
US5136411A
Cited
US4835763A
Cited
US5142532A
Cited
EP0337619A1
Cited
WO1989009518A1
Cited
US4975916A
Cited
CA2002295A1
Cited
US4891694A
Cited
US5095482A
Cited
EP0382431A1
Cited
CA2008900A1
Cited
US5002356A
Cited
WO1990014733A1
Cited
WO1990014734A1
Cited
WO1991002276A1
Cited
US5016969A
Cited
WO1991004617A1
Cited
WO1991006157A1
Cited
US5107489A
Cited
WO1991008623A1
Cited
WO1991009478A1
Cited
US5357517A
Cited
WO1991011867A1
Cited
US5157667A
Cited
US5054050A
Cited
US5101290A
Cited
US5299201A
Cited
CA2051252A1
Cited
US5111497A
Cited
WO1992007431A1
Cited
WO1992007432A1
Cited
WO1992010036A1
Cited
US5067173A
Cited
US5097530A
Cited
GB2254984A
Cited
WO1993000760A1
Cited
US5331642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-05-21 | 1999-11-20 | 2000-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-21 | 2003-11-20 | 2004-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-21 | 2007-11-20 | 2008-05-21 | $7700.00 | Window Closed / Lapsed |