H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 1/00 (2006.01) H04L 1/08 (2006.01) H04L 27/20 (2006.01) H04L 27/32 (2006.01) H04L 1/12 (2006.01)
Patent
CA 2452774
The present invention relates to the transference of signaling frames on GERAN (GSM/EDGE Radio Access Network) half rate channels utilizing a modulation scheme carrying n bits in one symbol. In order to be able to utilize the existing channel coding developed for channels with different modulations and to avoid high rate convolutional and block codes, the AMR signalling frame to be transferred is coded using a coding procedure defined for a GSM half rate channel utilizing a GMSK modulation scheme, the coding procedure outputting a coded output stream. In response to said coding, each bit of the coded output stream is repeated n times, whereby a repeated bit stream is obtained, and symbols to be transmitted are formed from the repeated bit stream.
L'invention concerne le transfert de trames de signalisation sur des canaux demi-débit GERAN (Réseau d'accès radio GSM/EDGE) utilisant un schéma de modulation comportant n bits dans un symbole. L'invention a pour but de permettre l'utilisation du codage de canal existant développé pour des canaux à différentes modulations et d'éviter le recours à des codes de convolution et à des codes complets à haut débit. A cet effet, la trame de signalisation ARM à tranférer est codée au moyen d'un processus de codage défini pour un canal GSM demi-débit utilisant un schéma de modulation GMSK, le processus de codage fournissant un flux de sortie codé. En réponse audit codage, chaque bit du flux de sortie codé est répété n fois, ce qui permet d'obtenir un train de bits répétés, les symboles à transmettre étant formés à partir dudit train de bits répétés.
Bellier Thierry
Sebire Benoist
2011 Intellectual Property Asset Trust
Nokia Corporation
Sim & Mcburney
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