WO2004068780A1 - Procede et dispositif de transmission de donnees par l'intermediaire de multiplexage frequentiel orthogonal et d'acces multiple par repartition dans le temps - Google Patents
Procede et dispositif de transmission de donnees par l'intermediaire de multiplexage frequentiel orthogonal et d'acces multiple par repartition dans le temps Download PDFInfo
- Publication number
- WO2004068780A1 WO2004068780A1 PCT/CH2003/000064 CH0300064W WO2004068780A1 WO 2004068780 A1 WO2004068780 A1 WO 2004068780A1 CH 0300064 W CH0300064 W CH 0300064W WO 2004068780 A1 WO2004068780 A1 WO 2004068780A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- data
- time slots
- transmission
- subcarriers
- transmission rate
- Prior art date
Links
Classifications
-
- 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
- H04L5/02—Channels characterised by the type of signal
- H04L5/023—Multiplexing of multicarrier modulation signals
-
- 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
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
Definitions
- the master can specify a certain modulation format for a certain number of time slots and a different one for a next number of time slots. It can also control the transmissions from the slaves, e.g. B. by assigning each slave certain time slots for transmission. The master can make this assignment, the choice of the modulation format and the number of time slots for which this should apply, e.g. B. adjust the current quality of the subcarrier.
- the method is preferably implemented as follows:
- step h of the method all assigned data can be transmitted at the second transmission rate (or the corresponding higher current transmission rate).
- all subcarriers used have the same modulation format.
- the modulation format can be selected differently in different time slots. If the noise levels in different transmission channels differ only slightly, the simplification results in at most a small loss of bandwidth or transmission capacity.
- the classifier 16 Based on the data received from all subordinate transceivers, the classifier 16 periodically classifies the transceivers by assigning each one Assigns class. Each class corresponds to a specific, maximum possible transmission rate. The class assignments are held in memory 17 until the next reclassification.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Time-Division Multiplex Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003201593A AU2003201593A1 (en) | 2003-01-28 | 2003-01-28 | Method and arrangement for transmitting data by using ofdm and tdma |
EP03700290A EP1625685A1 (fr) | 2003-01-28 | 2003-01-28 | Procede et dispositif de transmission de donnees par l'intermediaire de multiplexage frequentiel orthogonal et d'acces multiple par repartition dans le temps |
PCT/CH2003/000064 WO2004068780A1 (fr) | 2003-01-28 | 2003-01-28 | Procede et dispositif de transmission de donnees par l'intermediaire de multiplexage frequentiel orthogonal et d'acces multiple par repartition dans le temps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2003/000064 WO2004068780A1 (fr) | 2003-01-28 | 2003-01-28 | Procede et dispositif de transmission de donnees par l'intermediaire de multiplexage frequentiel orthogonal et d'acces multiple par repartition dans le temps |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004068780A1 true WO2004068780A1 (fr) | 2004-08-12 |
Family
ID=32778505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2003/000064 WO2004068780A1 (fr) | 2003-01-28 | 2003-01-28 | Procede et dispositif de transmission de donnees par l'intermediaire de multiplexage frequentiel orthogonal et d'acces multiple par repartition dans le temps |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1625685A1 (fr) |
AU (1) | AU2003201593A1 (fr) |
WO (1) | WO2004068780A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7920884B2 (en) | 2004-06-04 | 2011-04-05 | Qualcomm Incorporated | Frame structures for a wireless communication system with multiple radio technologies |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2608872A1 (fr) * | 1986-12-19 | 1988-06-24 | Trt Telecom Radio Electr | Dispositif de transmission de donnees a faible debit pour un systeme de transmission d'informations utilisant dans un sens de transmission, le principe dit d'a.m.r.t. |
US5910970A (en) * | 1996-05-09 | 1999-06-08 | Texas Instruments Incorporated | MDSL host interface requirement specification |
US20020102937A1 (en) * | 1995-02-06 | 2002-08-01 | Mark J. Dapper | Communication system with multicarrier telephony transport |
EP1265392A1 (fr) * | 2001-06-06 | 2002-12-11 | STMicroelectronics S.A. | Procédé de transmission de données en multiplexage par division de fréquences orthogonales |
-
2003
- 2003-01-28 WO PCT/CH2003/000064 patent/WO2004068780A1/fr not_active Application Discontinuation
- 2003-01-28 EP EP03700290A patent/EP1625685A1/fr not_active Withdrawn
- 2003-01-28 AU AU2003201593A patent/AU2003201593A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2608872A1 (fr) * | 1986-12-19 | 1988-06-24 | Trt Telecom Radio Electr | Dispositif de transmission de donnees a faible debit pour un systeme de transmission d'informations utilisant dans un sens de transmission, le principe dit d'a.m.r.t. |
US20020102937A1 (en) * | 1995-02-06 | 2002-08-01 | Mark J. Dapper | Communication system with multicarrier telephony transport |
US5910970A (en) * | 1996-05-09 | 1999-06-08 | Texas Instruments Incorporated | MDSL host interface requirement specification |
EP1265392A1 (fr) * | 2001-06-06 | 2002-12-11 | STMicroelectronics S.A. | Procédé de transmission de données en multiplexage par division de fréquences orthogonales |
Non-Patent Citations (1)
Title |
---|
GARDNER S ET AL: "HOMEPLUG STANDARD BRINGS NETWORKING TO THE HOME", COMMUNICATION SYSTEMS DESIGN, SAN FRANCISCO, USA, December 2000 (2000-12-01), pages 65 - 66,68,70,72, XP001066570 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7920884B2 (en) | 2004-06-04 | 2011-04-05 | Qualcomm Incorporated | Frame structures for a wireless communication system with multiple radio technologies |
US8089855B2 (en) | 2004-06-04 | 2012-01-03 | Qualcomm Incorporated | Transmission of overhead information for broadcast and multicast services in a wireless communication system |
US8577299B2 (en) | 2004-06-04 | 2013-11-05 | Qualcomm Incorporated | Wireless communication system with configurable cyclic prefix length |
US8582596B2 (en) | 2004-06-04 | 2013-11-12 | Qualcomm Incorporated | Coding and modulation for broadcast and multicast services in a wireless communication system |
US8588203B2 (en) | 2004-06-04 | 2013-11-19 | Qualcomm Incorporated | Wireless communication system with improved broadcast coverage |
US8687617B2 (en) | 2004-06-04 | 2014-04-01 | Qualcomm Incorporated | Wireless communication system with improved broadcast coverage |
Also Published As
Publication number | Publication date |
---|---|
AU2003201593A1 (en) | 2004-08-23 |
EP1625685A1 (fr) | 2006-02-15 |
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