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1. (WO1997016917) METHOD AND APPARATUS FOR TRANSMITTING MESSAGES IN A TELECOMMUNICATION SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016917 International Application No.: PCT/FI1996/000579
Publication Date: 09.05.1997 International Filing Date: 30.10.1996
Chapter 2 Demand Filed: 21.05.1997
IPC:
H04J 3/16 (2006.01) ,H04J 3/17 (2006.01) ,H04L 1/00 (2006.01) ,H04M 1/725 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
J
MULTIPLEX COMMUNICATION
3
Time-division multiplex systems
16
in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
J
MULTIPLEX COMMUNICATION
3
Time-division multiplex systems
17
in which the transmission channel allotted to a first user may be taken away and re-allotted to a second user if the first user becomes inactive, e.g. TASI
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1
Arrangements for detecting or preventing errors in the information received
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
M
TELEPHONIC COMMUNICATION
1
Substation equipment, e.g. for use by subscribers
72
Substation extension arrangements; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selecting
725
Cordless telephones
Applicants:
NOKIA TELECOMMUNICATIONS OY [FI/FI]; Keilalahdentie 4 FIN-02150 Espoo, FI (AllExceptUS)
HAAVISTO, Petri [FI/FI]; FI (UsOnly)
Inventors:
HAAVISTO, Petri; FI
Agent:
OY KOLSTER AB; Iso Roobertinkatu 23 P.O. Box 148 FIN-00121 Helsinki, FI
Priority Data:
95526602.11.1995FI
Title (EN) METHOD AND APPARATUS FOR TRANSMITTING MESSAGES IN A TELECOMMUNICATION SYSTEM
(FR) PROCEDE ET APPAREIL POUR TRANSMETTRE DES MESSAGES DANS UN SYSTEME DE TELECOMMUNICATION
Abstract:
(EN) The invention relates to a method and an apparatus for implementing the method, which allow a transmitter (100) of a digital telecommunication system transmitting speech to transmit predetermined messages to a receiver (102) over a speech channel (108). The invention is based on transmitting messages (114) from the transmitter (100) to the receiver (102) on the speech channel (108) in such a way that they are encoded in some of the speech coding bits,whereby the speech coding bits selected for message transmission have been selected in such a way that they affect the quality of speech as little as possible. Most preferably, the speech coding bits used for transmitting messages are protected by channel coding (702, 704). Speech coding bits are 'stolen' for message transmission only for very short periods at a time and only for exactly the time it takes to transmit the messages (114); at other times, the entire speech channel (108) is used normally for speech transmission.
(FR) L'invention concerne un procédé et un appareil pour mettre en oeuvre ce procédé, permettant à un transmetteur (100) d'un système de télécommunication numérique de transmission vocale de transmettre des messages prédéterminés, vers un récepteur (102), par un canal vocal (108). L'invention est basée sur la transmission de messages (114) d'un transmetteur (100) vers un récepteur (102) sur le canal vocal (108) de manière à ce qu'ils soient codés dans certains des bits de langage. Les bits codant le langage choisis pour la transmission des messages l'ont été de manière à influer aussi peu que possible sur la qualité du language. De préférence, les bits de codage du langage utilisés pour transmettre des messages sont protégés par le codage des canaux (702, 704). Les bits de codage du langage sont 'volés' pour la transmission de messages, uniquement pendant des périodes très courtes à la fois et uniquement pendant la durée exacte de temps nécessaire pour transmettre le message (114); à d'autres moments, le canal vocal entier (108) est utilisé normalement pour la transmission vocale.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0872116US6208715JPH11515152 CN1203001CA2236348AU1996073033