WO2001037534A3 - Automatic data rate selection in dsl modems - Google Patents
Automatic data rate selection in dsl modems Download PDFInfo
- Publication number
- WO2001037534A3 WO2001037534A3 PCT/US2000/041700 US0041700W WO0137534A3 WO 2001037534 A3 WO2001037534 A3 WO 2001037534A3 US 0041700 W US0041700 W US 0041700W WO 0137534 A3 WO0137534 A3 WO 0137534A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dtu
- data rate
- line quality
- transmits
- probe signal
- Prior art date
Links
Classifications
-
- 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
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1438—Negotiation of transmission parameters prior to communication
- H04L5/1446—Negotiation of transmission parameters prior to communication of transmission speed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Communication Control (AREA)
- Telephonic Communication Services (AREA)
Abstract
A DSL communication system includes a DSL transmission unit at a central office (DTU-C) (310) and a DSL transmission unit at a remote location (DTU-R) (350) in communication over a communication link. DTU-C transmits a discovery message (315) to DTU-R (350) and awaits receiving a discovery response message (355) from DTU-R. After receiving the discovery response message (355), DTU-C transmits a probe message (320) to DTU-R followed by a probe signal. DTU-R measures the line quality while receiving the probe signal. After receiving the probe signal, DTU-R transmits a probe signal to DTU-C, by which signal DTU-C measures the line quality. After transmitting the probe signal, DTU-R (350) transmits a probe response message (365), including line quality measurements performed by DTU-R. DTU-C and DTU-R may negociate a first or startup data rate by transmitting data rate messages (330) based on the line quality measurements. DTU-C and DTU-R synchronize or train at the first data rate. After synchronization, DTU-C and/or DTU-R measure the line quality at the first data rate. A second data rate is then selected based on the line quality measurements. DTU-C may then initiate a rate change request, according to which DTU-C and DTU-R may re-synchronize at the second rate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00990460A EP1230758A2 (en) | 1999-11-17 | 2000-10-30 | Automatic data rate selection in dsl modems |
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16602899P | 1999-11-17 | 1999-11-17 | |
US60/166,028 | 1999-11-17 | ||
US19704700P | 2000-04-14 | 2000-04-14 | |
US60/197,047 | 2000-04-14 | ||
US09/629,564 US6535551B1 (en) | 1999-11-17 | 2000-07-31 | DSL post-synchronization auto baud |
US09/629,563 | 2000-07-31 | ||
US09/629,564 | 2000-07-31 | ||
US09/629,565 US6546046B1 (en) | 1999-11-17 | 2000-07-31 | DSL pre-synchronization auto baud |
US09/629,565 | 2000-07-31 | ||
US09/629,563 US6570915B1 (en) | 1999-11-17 | 2000-07-31 | DSL auto baud |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001037534A2 WO2001037534A2 (en) | 2001-05-25 |
WO2001037534A3 true WO2001037534A3 (en) | 2001-12-20 |
Family
ID=27538734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/041700 WO2001037534A2 (en) | 1999-11-17 | 2000-10-30 | Automatic data rate selection in dsl modems |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1230758A2 (en) |
WO (1) | WO2001037534A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100407717C (en) * | 2002-07-26 | 2008-07-30 | 中兴通讯股份有限公司 | Very high bit rate digital user line link rate switching method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5541955A (en) * | 1992-11-06 | 1996-07-30 | Pericle Communications Company | Adaptive data rate modem |
EP0806852A2 (en) * | 1996-05-09 | 1997-11-12 | Texas Instruments Incorporated | A multimode digital modem |
WO1998059476A1 (en) * | 1997-06-20 | 1998-12-30 | Amati Communications Corporation | Protocol for transceiver initialisation in a discrete multitone (dmt) system |
-
2000
- 2000-10-30 WO PCT/US2000/041700 patent/WO2001037534A2/en active Application Filing
- 2000-10-30 EP EP00990460A patent/EP1230758A2/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5541955A (en) * | 1992-11-06 | 1996-07-30 | Pericle Communications Company | Adaptive data rate modem |
EP0806852A2 (en) * | 1996-05-09 | 1997-11-12 | Texas Instruments Incorporated | A multimode digital modem |
WO1998059476A1 (en) * | 1997-06-20 | 1998-12-30 | Amati Communications Corporation | Protocol for transceiver initialisation in a discrete multitone (dmt) system |
Non-Patent Citations (1)
Title |
---|
CHEN WALTER Y: "DSL: SIMULATION TECHNIQUES AND STANDARDS DEVELOPMENT FOR DIGITAL SUBSCRIBER LINE SYSTEMS", 1998, MACMILLAN, INDIANAPOLIS, INDIANA, USA, XP002166042 * |
Also Published As
Publication number | Publication date |
---|---|
WO2001037534A2 (en) | 2001-05-25 |
EP1230758A2 (en) | 2002-08-14 |
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