Signal processing sequencing in the reduced transmission...

H - Electricity – 04 – J

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H04J 3/02 (2006.01) H04B 7/26 (2006.01) H04Q 7/20 (2006.01)

Patent

CA 2073881

Sequencing of signal processing applies in reduced rate communications mode in a digital cellular radiocommunications system to route digital voice messages between a terminal and a base station using traffic frames (TF) each consisting of time intervals, the terminal having a time interval for transmitting to the base station and a time interval for receiving from the base station, the message being made up of blocks (B) representing voice sample groups, each block being made up of sub-blocks (SB) each routed during the corresponding traffic frame time intervals, and is characterized by the following: - during each traffic frame (TF) are effected: + a configuration processing (OP1, OP15) + processing of a reception time interval (OP6), + processing of a transmission time interval (OP13), - during a transmission period outside the traffic frames, a transmission block (OP11) is processed, - during a reception period, a particular traffic frame, a reception block (OP7) is also processed.

Le séquencement du traitement du signal s'applique dans le mode communication à débit réduit d'un système de radiocommunications cellulaire numérique pour acheminer une communication de parole numérisée entre un terminal et une station de base au moyen de trames de trafic (TF) composées chacune d'intervalles de temps, le terminal disposant d'un intervalle de temps d'émission à destination de la station de base et d'un intervalle de temps de réception en provenance de la station de base, la communication étant composée de blocs (B) correspondant à des groupes d'échantillons de parole, chaque bloc étant formé de sous-blocs (SB) acheminés chacun durant les intervalles de temps correspondant de trames de trafic, et se caractérise en ce que, - durant chaque trame de trafic (TF) sont effectués : + un traitement de configuration (OPl,OP15) + le traitement d'un intervalle de temps de réception (OP6), + le traitement d'un intervalle de temps d'émission (OP13), - durant une période d'émission située en dehors des trames de trafic, est effectué le traitement d'un bloc d'émission (OPll), - durant une période de réception, une trame de trafic particulière, est effectué de plus le traitement d'un bloc de réception (OP7).

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