WO2002019543A3 - Method for improving the quality of voice signals in a mobile radio network - Google Patents

Method for improving the quality of voice signals in a mobile radio network Download PDF

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Publication number
WO2002019543A3
WO2002019543A3 PCT/DE2001/003317 DE0103317W WO0219543A3 WO 2002019543 A3 WO2002019543 A3 WO 2002019543A3 DE 0103317 W DE0103317 W DE 0103317W WO 0219543 A3 WO0219543 A3 WO 0219543A3
Authority
WO
WIPO (PCT)
Prior art keywords
voice signals
improving
quality
phase shift
radio network
Prior art date
Application number
PCT/DE2001/003317
Other languages
German (de)
French (fr)
Other versions
WO2002019543A2 (en
Inventor
Carsten Ball
Thomas Stark
Original Assignee
Siemens Ag
Carsten Ball
Thomas Stark
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 Siemens Ag, Carsten Ball, Thomas Stark filed Critical Siemens Ag
Publication of WO2002019543A2 publication Critical patent/WO2002019543A2/en
Publication of WO2002019543A3 publication Critical patent/WO2002019543A3/en

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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
    • 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

Abstract

The aim of the invention is to improve the data rate of data packets with a fixed predetermined structure (bursts), which are used to transmit voice signals in time slots that are assigned to a transmission channel. To achieve this, the bursts are modulated using a phase shift-key modulation method, such as in particular the 8PSK, (8 phase shift keying) or QPSK, (quadrature phase shift keying) and/or several time slots (multislots) are simultaneously occupied for a voice communication.
PCT/DE2001/003317 2000-08-29 2001-08-29 Method for improving the quality of voice signals in a mobile radio network WO2002019543A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000142352 DE10042352A1 (en) 2000-08-29 2000-08-29 Method for improving the voice quality in a mobile radio network
DE10042352.3 2000-08-29

Publications (2)

Publication Number Publication Date
WO2002019543A2 WO2002019543A2 (en) 2002-03-07
WO2002019543A3 true WO2002019543A3 (en) 2002-05-10

Family

ID=7654140

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/003317 WO2002019543A2 (en) 2000-08-29 2001-08-29 Method for improving the quality of voice signals in a mobile radio network

Country Status (2)

Country Link
DE (1) DE10042352A1 (en)
WO (1) WO2002019543A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10224578B4 (en) 2002-06-03 2022-07-07 Christian F. von Brockdorff Method for circuit-switched radio transmission in a communication system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5701294A (en) * 1995-10-02 1997-12-23 Telefonaktiebolaget Lm Ericsson System and method for flexible coding, modulation, and time slot allocation in a radio telecommunications network
WO1998051111A1 (en) * 1997-05-08 1998-11-12 Koninklijke Philips Electronics N.V. Link quality dependent modulation scheme
WO2000003523A1 (en) * 1998-07-10 2000-01-20 Nokia Networks Oy Data transmission method and radio system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5701294A (en) * 1995-10-02 1997-12-23 Telefonaktiebolaget Lm Ericsson System and method for flexible coding, modulation, and time slot allocation in a radio telecommunications network
WO1998051111A1 (en) * 1997-05-08 1998-11-12 Koninklijke Philips Electronics N.V. Link quality dependent modulation scheme
WO2000003523A1 (en) * 1998-07-10 2000-01-20 Nokia Networks Oy Data transmission method and radio system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SAMPEI S ET AL: "ADAPTIVE MODULATION/TDMA SCHEME FOR PERSONAL MULTI-MEDIA COMMUNICATION SYSTEMS", PROCEEDINGS OF THE GLOBAL TELECOMMUNICATIONS CONFERENCE (GLOBECOM). SAN FRANCISCO, NOV. 28 - DEC. 2, 1994, NEW YORK, IEEE, US, vol. 2, 28 November 1994 (1994-11-28), pages 989 - 993, XP000488685, ISBN: 0-7803-1821-8 *

Also Published As

Publication number Publication date
WO2002019543A2 (en) 2002-03-07
DE10042352A1 (en) 2002-03-28

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