Distributive communications network

Details Distributive communications network Distributive communications network

H - Electricity

04

Q

H04Q 11/00 (2006.01) H04B 10/20 (2006.01) H04L 12/46 (2006.01)

Patent

CA 2143948

A distributive communications network comprises groups of nodes (11-22, 31-36, 41-43, 51) at different levels (1, 2, 3, 4). Each set of nodes at one level is connected to an associated node in the level above for transmission and reception of traffic. Traffic is assigned to one of a number of bands of wavelengths according to whether it is local or wider area traffic. At the first level of node (11-22) local area traffic in the corresponding band of wavelengths is looped back and retransmitted to all of the terminals (a-x) that are connected to that node. At each level of node, traffic is either passed on to a higher level, or looped back according to the band of wavelengths to which it is assigned. Thus, the wavelength band determines the node level at which the traffic is looped back, and the breadth of terminals ultimately exposed to this traffic. It is possible to re-use bands of wavelengths for communicating between terminals.

L'invention est un système de communication réparti comportant plusieurs groupes de noeuds (11-22, 31-36, 41-43, 51) à différents niveaux (1, 2, 3, 4). Chaque ensemble de noeuds à un niveau donné est connecté à un noeud associé au niveau supérieur pour la transmission et la réception du trafic. Ce trafic est affecté à l'une de plusieurs bandes de longueurs d'onde selon qu'il appartient au trafic local ou au trafic interurbain. Au premier niveau des noeuds (11-22), le trafic local dans la bande de longueurs d'onde correspondante est retourné à tous les terminaux (a-x) connectés au noeud en cause. € chaque niveau de noeuds, le trafic est soit transféré à un niveau plus élevé, soit retourné aux terminaux selon la bande de longueurs d'onde à laquelle il est affecté. La bande de longueurs d'onde détermine donc le niveau des noeuds auquel le trafic est retourné et le nombre des terminaux ultimement exposés à ce trafic. Par conséquent, il est possible de réutiliser les bandes de fréquence pour les communications entre les terminaux.

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