Method and apparatus for connecting a node to a wireless...

H - Electricity – 04 – L

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H04L 12/28 (2006.01) H04L 12/56 (2006.01) H04L 29/06 (2006.01) H04L 29/08 (2006.01)

Patent

CA 2168351

Standard protocols, such as those commonly used on LAN networks, are used to connect nodes (104, 106, 108 and 110) to an enterprise network (102) via a wide area wireless network (100). Within the appropriate protocol stacks, the standard protocols are optimized by filtering some packets, eliminating and reducing the size of data packets. The optimized data packets can be transmitted over the wireless WAN, increasing WAN efficiency. The optimization is accomplished by inserting an additional optimization layer (610) into the stack between the existing layers. The optimization layer accepts the normal protocol signals generated by the surrounding layers and generates outputs which mimic protocol layers which the surrounding layers expect. Consequently, the optimization layer operates transparently with respect to the existing protocol stack layers.

Les protocoles standard, tels que ceux généralement utilisés sur les réseaux locaux, sont utilisés pour connecter des noeuds (104, 106, 108, et 110) à un réseau d'entreprise (102) via un réseau sans fil de longue distance (100). Dans les piles de protocoles appropriées, on optimise les protocoles standard en filtrant certains paquets, en éliminant et en réduisant la taille des paquets de données. Les paquets de données optimisés peuvent être transmis par le réseau longue distance sans fil, ce qui permet d'augmenter l'efficacité de ce dernier. On réalise l'optimisation en insérant une couche d'optimisation supplémentaire (610) dans la pile de protocoles entre les couches existantes. La couche d'optimisation accepte les signaux de protocole normaux générés par les couches environnantes et génère des signaux de sortie qui simulent les couches de protocoles auxquelles s'attendent les couches environnantes. Par conséquent, le fonctionnement de la couche d'optimisation est transparent par rapport aux couches de la pile de protocoles existante.

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