Method for code re-allocation in telecommunication systems,...

H - Electricity – 04 – J

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H04J 13/16 (2011.01) H04J 13/20 (2011.01)

Patent

CA 2470619

In a code division multiple access transmission system (CDMA), codes are generated according to a tree structure organized on a plurality of layers. Each re-allocation is considered as an access request to the system by a new user and the re-allocation codes are transmitted to each involved user through the respective re-allocation messages. Re-allocation messages to users having the same spreading factor (SF), and hence the same service bit-rate (kR) are substantially sent simultaneously, in order to reduce to a minimum the time required for the re-allocation operation.

Dans un système de transmission d'accès multiples par répartition de code (AMRC), des codes sont générés en fonction d'une structure en arbre organisée sur plusieurs couches. Chaque réaffectation est considérée comme une demande d'accès au système par un nouvel utilisateur et les codes de réaffectation sont transmis à chaque utilisateur impliqué par le biais de messages de réaffectation respectifs. Les messages de réaffectation destinés aux utilisateurs possédant le même facteur de diffusion (SF), et donc le même débit binaire de service (kR) sont sensiblement envoyés simultanément, de manière à réduire au minimum le temps nécessaire à la mise en oeuvre de l'opération de réaffectation.

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