WO2001086856A3 - System and process for return channel spectrum manager - Google Patents

System and process for return channel spectrum manager Download PDF

Info

Publication number
WO2001086856A3
WO2001086856A3 PCT/US2001/015148 US0115148W WO0186856A3 WO 2001086856 A3 WO2001086856 A3 WO 2001086856A3 US 0115148 W US0115148 W US 0115148W WO 0186856 A3 WO0186856 A3 WO 0186856A3
Authority
WO
WIPO (PCT)
Prior art keywords
modems
frequency
spectrum
upstream
return channel
Prior art date
Application number
PCT/US2001/015148
Other languages
French (fr)
Other versions
WO2001086856A2 (en
Inventor
Paul E Nikolich
J David Unger
Original Assignee
Adc Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Adc Inc filed Critical Adc Inc
Priority to CA002408496A priority Critical patent/CA2408496A1/en
Priority to AU2001259722A priority patent/AU2001259722A1/en
Priority to EP01933285A priority patent/EP1290819A2/en
Publication of WO2001086856A2 publication Critical patent/WO2001086856A2/en
Publication of WO2001086856A3 publication Critical patent/WO2001086856A3/en
Priority to HK04101547A priority patent/HK1058869A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
    • H04H60/93—Wired transmission systems
    • H04H60/96—CATV systems
    • H04H60/97—CATV systems using uplink of the CATV systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/12—Arrangements for reducing cross-talk between channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications

Abstract

The scanning receiver spectrum analyzer system is a system for monitoring the spectrum of RF energy on the upstream cable plant for the purpose of operating a group of cable modems in frequency bands that are the most interference-free. The spectrum analyzer surveys the entire upstream spectrum (typically 5 - 42 MHz) to determine the noise level at each frequency, and then weighing this data with current operating conditions (e.g. bit error rates) to determine the best possible alternative channel frequency for modems on an upstream node, and then waiting for a trigger condition to occur which indicates a need for the modems to change frequency.
PCT/US2001/015148 2000-05-10 2001-05-10 System and process for return channel spectrum manager WO2001086856A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002408496A CA2408496A1 (en) 2000-05-10 2001-05-10 System and process for return channel spectrum manager
AU2001259722A AU2001259722A1 (en) 2000-05-10 2001-05-10 System and process for return channel spectrum manager
EP01933285A EP1290819A2 (en) 2000-05-10 2001-05-10 System and process for return channel spectrum manager
HK04101547A HK1058869A1 (en) 2000-05-10 2004-03-02 System and process for return channel spectrum amnager

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56827000A 2000-05-10 2000-05-10
US09/568,270 2000-05-10

Publications (2)

Publication Number Publication Date
WO2001086856A2 WO2001086856A2 (en) 2001-11-15
WO2001086856A3 true WO2001086856A3 (en) 2002-04-11

Family

ID=24270617

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/015148 WO2001086856A2 (en) 2000-05-10 2001-05-10 System and process for return channel spectrum manager

Country Status (6)

Country Link
EP (1) EP1290819A2 (en)
CN (1) CN1204708C (en)
AU (1) AU2001259722A1 (en)
CA (1) CA2408496A1 (en)
HK (1) HK1058869A1 (en)
WO (1) WO2001086856A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103873149A (en) * 2014-02-27 2014-06-18 北京大学 High-precision optical fiber frequency transmission method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI429219B (en) * 2006-05-01 2014-03-01 Koninkl Philips Electronics Nv Method of reserving resources with a maximum delay guarantee for multi-hop transmission in a distributed access wireless communications network
JP2010122617A (en) * 2008-11-21 2010-06-03 Yamaha Corp Noise gate and sound collecting device
US9535150B1 (en) * 2015-06-12 2017-01-03 Rohde & Schwarz Gmbh & Co. Kg Method for calibrating a cable and respective measuring device
WO2017219318A1 (en) * 2016-06-23 2017-12-28 华为技术有限公司 Cm and hfc network fault locating system and fault detection method
US10135490B2 (en) * 2017-04-10 2018-11-20 Cisco Technology, Inc. Interference group discovery for full duplex network architecture in cable network environment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5885213A (en) * 1992-10-23 1999-03-23 Nellcor Puritan Bennett Incorporated Method and apparatus for reducing ambient noise effects in electronic monitoring instruments
EP0949832A1 (en) * 1998-04-10 1999-10-13 Nortel Matra Cellular Method and apparatus for allocation of a transmission frequency within a given spectrum
US5987069A (en) * 1996-12-24 1999-11-16 Gte Government Systems Corporation Method and apparatus for variably allocating upstream and downstream communication spectra

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5885213A (en) * 1992-10-23 1999-03-23 Nellcor Puritan Bennett Incorporated Method and apparatus for reducing ambient noise effects in electronic monitoring instruments
US5987069A (en) * 1996-12-24 1999-11-16 Gte Government Systems Corporation Method and apparatus for variably allocating upstream and downstream communication spectra
EP0949832A1 (en) * 1998-04-10 1999-10-13 Nortel Matra Cellular Method and apparatus for allocation of a transmission frequency within a given spectrum

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103873149A (en) * 2014-02-27 2014-06-18 北京大学 High-precision optical fiber frequency transmission method
CN103873149B (en) * 2014-02-27 2016-10-05 北京大学 A kind of high-precision optical fiber frequency transmission method

Also Published As

Publication number Publication date
HK1058869A1 (en) 2004-06-04
WO2001086856A2 (en) 2001-11-15
CN1204708C (en) 2005-06-01
CA2408496A1 (en) 2001-11-15
CN1442004A (en) 2003-09-10
AU2001259722A1 (en) 2001-11-20
EP1290819A2 (en) 2003-03-12

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